H04N

PICTORIAL COMMUNICATION, e.g. TELEVISION

This subclass covers :

transmission of pictures or their transient or permanent reproduction either locally or remotely and the corresponding electronic image capture and reproduction process employing image representative electric signals, by methods involving both of or at least one of the following steps:

the electronic acquisition or scanning of a picture or scene, i.e. resolving the whole picture-containing area into individual picture-elements and the derivation of picture-representative electric signals related thereto, simultaneously or in sequence , e.g. by reading an electronic solid-state image sensor [SSIS] pickup device, e.g. CCD or CMOS image sensor, as electronic image sensor converting optical image information into said electrical signals;

the reproduction of the whole picture-containing area or scene by the reproduction of individual picture -elements into which the picture is resolved by means of picture -representative electric signals derived therefrom, simultaneously or in sequence;

in group H04N1/00, systems for the transmission or the reproduction of arbitrarily composed pictures or patterns in which the local light variations composing a picture are not subject to variation with time, e.g. documents, maps, charts, photographs other than cinematograph films;

circuits specially designed for dealing with pictorial communication signals, e.g. television signals, as distinct from merely signals of a particular frequency range.

This subclass does not cover :

circuits or other parts of systems which form the subject of other subclasses, which are covered by the corresponding subclasses, e.g. H03C, H03F, H03J, H04B, H04H;

systems in which legible alphanumeric or like character forms are analysed according to step (a) of Note (1) to derive an electric signal from which the character is recognised by comparison with stored information, which are covered by subclass G06K;

systems for the direct photographic copying of an original picture in which an electric signal representative of the picture is derived according to the said step (a) and employed to modify the operation of the system, e.g. to control exposure, which are covered by class G03;

systems for the reproduction according to step (b) of Note (1) of pictures comprising alphanumeric or like character forms but involving the production of the equivalent of a signal which would be derived according to the above -mentioned step (a), e.g. by cams, punched card or tape, coded control signal, or other means, which are covered by the subclass for the application, e.g. G01D, G06T, H04L;

systems for the reproduction according to the above-mentioned step (b) of pictures comprising alphanumeric or like character forms and involving the generation according to the above -mentioned step (a) of picture-representative electric signals from a pre-arranged assembly of such characters, or records thereof, forming an integral part of the systems, which are covered by the subclass for the application, e.g. B41B, G06K, subject to those applications which are covered by this subclass;

printing, duplication or marking processes , or materials or processes therefor, which are covered by the relevant subclasses, e.g. B41C, B41J, B41M, G03C, G03F, G03G;

apparatus or methods for taking photographs using light sensitive film for image capture, apparatus/methods for printing, for projecting or viewing images using film stock, photographic film or slides by optical means, e.g. mounting of optical elements, flashes, and their related controls, e.g. exposure, focus, (opto-)mechanical motion blur (anti-shake), cooling, beam shaping;

aspects of apparatus or methods for taking photographs using an electronic image sensor [EIS] for image capture, insofar as they correspond to those of said apparatus methods for taking photographs using light sensitive film, i.e. insofar as not peculiar to the presence of the EIS, e.g. mounting of optical elements or flashes not peculiar to the presence of the EIS, and their related controls insofar as they are not peculiar to the presence or use of the EIS, e.g. exposure, focus, (opto-)mechanical motion blur (anti-shake);

aspects of apparatus or methods for projecting or viewing images using an electronic spatial light modulator [ESLM], insofar as they correspond to those of said apparatus/ methods for projecting or viewing images using film stock, photographic film or slides, i.e. insofar as not peculiar to the presence of the ESLM, e.g. mounting of optical elements not peculiar to the presence of the ESLM, and their related controls not peculiar to the presence of the ESLM, e.g. cooling, beam shaping, optical keystone correction;

(opto-)mechanical image enhancement in printers or projectors, e.g. keystone correction;

optical viewfinders;

remote control of cameras and projectors insofar not peculiar to the EIS or ESLM, e.g. not affecting their operation, or being based on a generated image signal;

optical aspects of camera modules using electronic image sensors and related constructional details (optical elements or arrangements associated with solid state imager structures H01L27/14625 );

constructional aspects of projectors, e.g. cooling, beam shaping, light integrating means not peculiar to the ESLM;

In this subclass, the following expression is used with the meaning indicated:

"television systems" means those systems for the electronic generation, transmission and reproduction of arbitrarily composed pictures in which the local light variations composing a picture may change with time, e.g. natural "live" scenes, electronic recordings of such scenes such as cinematograph films.

In this subclass, as in subclass G03B, the following terms are used with the meaning indicated:

"camera": a device capturing image information represented by light patterns reflected or emitted from objects, and exposing a light sensitive film or a main electronic image sensor during a timed exposure, usually through a photographic lens, and producing an image on a light sensitive film or an electrical image information signal respectively;

"projector": a device displaying image information by projection of light patterns, usually through an optical lens, wherein the light patterns are generated by illuminating an image, e.g. film or slide, or by converting an electric image signal into an optical signal using an electronic spatial light modulator;

"electronic image sensor [EIS]": optoelectronic transducer, converting optical image information into an electrical signal susceptible of being processed, stored, transmitted or displayed;

"additional sensor": a sensor, other than the main electronic image sensor, used for controlling a camera;

"electronic spatial light modulator [ESLM]": optoelectronic transducer converting electric signals representing image information into optical image information.

The following IPC groups are not in the CPC scheme. Subject matter for these IPC groups is classified in the following CPC groups:

H04N5/761

covered by

H04N5/782

H04N5/7613

covered by

H04N5/782

H04N5/7617

covered by

H04N5/782

H04N5/922

covered by

H04N5/92

H04N5/924

covered by

H04N5/92

H04N9/815

covered by

H04N9/81

In this subclass non-limiting references (in the sense of paragraph 39 of the Guide to the IPC) may still be displayed in the scheme.

H04N1/00

Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission

Details thereof

H04N1/00002

Diagnosis, testing or measuring; Detecting, analysing or monitoring not otherwise provided for error detection, error correction or monitoring in digital computers or digital computer components G06F11/00

H04N1/00005

relating to image data

H04N1/00007

relating to particular apparatus or devices

H04N1/0001

Transmission systems or arrangements

H04N1/00013

Reading apparatus

H04N1/00015

Reproducing apparatus

H04N1/00018

Scanning arrangements

H04N1/00021

Picture signal circuits

H04N1/00023

Colour systems

H04N1/00026

Methods therefor

H04N1/00029

Diagnosis, i.e. identifying a problem by comparison with a normal state

H04N1/00031

Testing, i.e. determining the result of a trial H04N1/00029 takes precedence; using test signals for transmission mode changing H04N2201/33371

H04N1/00034

Measuring, i.e. determining a quantity by comparison with a standard H04N1/00031 takes precedence

H04N1/00037

Detecting, i.e. determining the occurrence of a predetermined state H04N1/00031 takes precedence

H04N1/00039

Analysis, i.e. separating and studying components of a greater whole

H04N1/00042

Monitoring, i.e. observation H04N1/00029 - H04N1/00039 take precedence

H04N1/00045

using a reference pattern designed for the purpose, e.g. a test chart

H04N1/00047

using an image not specifically designed for the purpose

H04N1/0005

in service, i.e. during normal operation

H04N1/00053

out of service, i.e. outside of normal operation

H04N1/00055

automatically on a periodic basis

H04N1/00058

using a separate apparatus

H04N1/00061

using a remote apparatus H04N1/00066 takes precedence

H04N1/00063

using at least a part of the apparatus itself, e.g. self-testing

H04N1/00066

using a program downloaded or received from another apparatus

H04N1/00068

Calculating or estimating

H04N1/00071

characterised by the action taken

H04N1/00074

Indicating or reporting details of user-machine interface H04N1/0035

H04N1/00076

locally

H04N1/00079

remotely

H04N1/00082

Adjusting or controlling interrupting an operation H04N1/00915; inhibiting an operation H04N1/00925

H04N1/00084

Recovery or repair, e.g. self-repair

H04N1/00087

Setting or calibrating picture signal circuits H04N1/40

H04N1/0009

Storage

H04N1/00092

relating to the original or to the reproducing medium, e.g. imperfections or dirt detecting properties of a sheet H04N1/00681

H04N1/00095

Systems or arrangements for the transmission of the picture signal

H04N1/00098

via a television channel, e.g. for a series of still pictures with or without sound

H04N1/001

specially adapted for transmission via digital wireline networks H04N1/00098 takes precedence

H04N1/00103

specially adapted for radio transmission, e.g. via satellites H04N1/00098 takes precedence

H04N1/00106

using land mobile radio networks, e.g. mobile telephone

H04N1/00108

of digital signals

H04N1/00111

specially adapted for optical transmission

H04N1/00114

with transmission of additional information signals for control or supervision between transmitter and receiver H04N1/32101

H04N1/00116

of multimedia information

H04N1/00119

of sound information only

H04N1/00122

of text or character information only

H04N1/00124

of video information only

H04N1/00127

Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture

H04N1/00129

with a display device, e.g. CRT or LCD monitor with a television apparatus H04N1/00283; arrangements for control of display devices G09G

H04N1/00132

in a digital photofinishing system, i.e. a system where digital photographic images undergo typical photofinishing processing, e.g. printing ordering

H04N1/00135

Scanning of a photographic original

H04N1/00137

Transmission

H04N1/0014

via e-mail

H04N1/00143

Ordering

H04N1/00145

from a remote location

H04N1/00148

Storage information retrieval G06F16/00

H04N1/00151

with selective access

H04N1/00153

for sharing images with a selected individual or correspondent

H04N1/00156

with a group of selected individuals or correspondents

H04N1/00159

for sharing images without access restriction, e.g. publishing images

H04N1/00161

Viewing or previewing

H04N1/00164

at a remote location

H04N1/00167

Processing or editing H04N1/00196 - H04N1/00201 take precedence

H04N1/00169

Digital image input

H04N1/00172

directly from a still digital camera or from a storage medium mounted in a still digital camera H04N1/0018 takes precedence

H04N1/00175

from a still image storage medium H04N1/00172, H04N1/0018 take precedence

H04N1/00177

from a user terminal, e.g. personal computer

H04N1/0018

of images captured using a loaned, rented or limited-use still digital camera, e.g. recyclable or disposable camera

H04N1/00183

Photography assistance, e.g. displaying suggestions to the user

H04N1/00185

Image output for details of particular output arrangements see the relevant sub-class, e.g. B41J, G03B, G09G, G11B

H04N1/00188

Printing, e.g. prints or reprints H04N1/0019, H04N1/00196 take precedence

H04N1/0019

on souvenir-type products or the like, e.g. T-shirts or mugs

H04N1/00193

to a portable storage medium, e.g. a read-writable compact disk

H04N1/00196

Creation of a photo-montage, e.g. photoalbum H04N1/0019 takes precedence

H04N1/00198

Creation of a soft photo presentation, e.g. digital slide-show

H04N1/00201

Creation of a lenticular or stereo hardcopy image

H04N1/00204

with a digital computer or a digital computer system, e.g. an internet server programmed control between transmitter and receiver or between image input and image output device H04N1/32561

H04N1/00206

Transmitting or receiving computer data via an image communication device, e.g. a facsimile transceiver H04N1/00236 takes precedence

H04N1/00209

Transmitting or receiving image data, e.g. facsimile data, via a computer, e.g. using e-mail, a computer network, the internet, I-fax

H04N1/00212

Attaching image data to computer messages, e.g. to e-mails

H04N1/00214

details of transmission

H04N1/00217

only involving computer data transmission protocols, e.g. SMTP, WAP or HTTP communication protocol aspects and techniques in packet data networks H04L69/00; network-specific arrangements or communication protocols supporting networked applications H04L67/00

H04N1/0022

involving facsimile protocols or a combination of facsimile protocols and computer data transmission protocols

H04N1/00222

details of image data generation or reproduction, e.g. scan-to-email or network printing

H04N1/00225

details of image data generation, e.g. scan-to-email or network scanners using an image reading device as a local input to a computer H04N1/00241

H04N1/00228

Image push arrangements, e.g. from an image reading device to a specific network destination push-based network services H04L67/55

H04N1/0023

Image pull arrangements, e.g. to a multifunctional peripheral from a networked computer

H04N1/00233

details of image data reproduction, e.g. network printing or remote image display using an image reproducing device as a local output from a computer H04N1/00238; digital output from computer to printer unit G06F3/12

H04N1/00236

using an image reading or reproducing device, e.g. a facsimile reader or printer, as a local input to or local output from a computer image input to or image output from a computer via a network H04N1/00209

H04N1/00238

using an image reproducing device as a local output from a computer output via network, e.g. network printing H04N1/00233

H04N1/00241

using an image reading device as a local input to a computer input via network, e.g. network scanners H04N1/00225

H04N1/00244

with a server, e.g. an internet server fax-servers or the like for store and forward H04N1/324

H04N1/00246

with an optical device, e.g. an optical viewing aid

H04N1/00249

with a photographic apparatus, e.g. a photographic printer or a projector photographic apparatus per se G03B, G03D

H04N1/00251

with an apparatus for taking photographic images, e.g. a camera

H04N1/00254

with an electrophotographic copying machine, i.e. a photocopier

H04N1/00257

with an electro-developing recording medium, e.g. generating image signals by reading such a medium in a still camera

H04N1/00259

with an apparatus for processing exposed photographic materials

H04N1/00262

Reading a film during its processing, e.g. generating image signals from a film while the photographic image on the film is in the process of being developed

H04N1/00265

with a photographic printing apparatus

H04N1/00267

with a viewing or projecting apparatus, e.g. for reading image information from a film H04N1/00262 takes precedence

H04N1/0027

Reading or writing of non-image information from or to a photographic material, e.g. processing data stored in a magnetic track

H04N1/00273

with apparatus for handling photographic material

H04N1/00275

Recording image information on a photographic material

H04N1/00278

with a printing apparatus, e.g. a laser beam printer

H04N1/00281

with a telecommunication apparatus, e.g. a switched network of teleprinters for the distribution of text-based information, a selective call terminal details of transmission H04N1/00095; establishing a communication with one of a facsimile machine or another apparatus sharing a single line H04N1/32704; interfacing cordless telephone terminals with an accessory to increase the functionality of user interface H04M1/72409

H04N1/00283

with a television apparatus

H04N1/00286

with studio circuitry, devices or equipment, e.g. television cameras television studio circuitry, devices or equipment per se

H04N5/222

H04N1/00289

in a video photo booth or the like

H04N1/00291

with receiver circuitry television receiver circuitry per se

H04N5/44

H04N1/00294

for printing images at a television receiver

H04N1/00297

with a television signal recorder, e.g. for recording facsimile images on a VCR motion video recording combined with still video recording in a still video camera H04N1/212

H04N1/00299

with a television transmission apparatus, e.g. a videophone, a teletext system or a digital television system

H04N1/00302

with a telephonic apparatus, e.g. telephone answering machine or videotex terminal H04N1/00307 takes precedence; telephonic communication H04M

H04N1/00305

with a cordless telephone apparatus

H04N1/00307

with a mobile telephone apparatus constructional features of portable telephone sets H04M1/0202; mobile radio systems H04W84/00

H04N1/0031

with a selective call apparatus, e.g. a paging device selective call receivers H04W88/022; selective call encoders H04W88/185

H04N1/00312

with a digital transmission apparatus, e.g. a switched network of teleprinters for the distribution of text-based information, SMS or ISDN device transmitting or receiving via a computer, e.g. using e-mail, a computer network or the internet H04N1/00214; transmission of digital information H04L

H04N1/00315

with a radio transmission apparatus with a cordless telephone H04N1/00305; systems or arrangements for the transmission of a picture signal specially adapted for transmission via radio H04N1/00103; H04N1/00307 takes precedence; radio transmission systems H04B7/00; wireless communication networks H04W

H04N1/00318

with a multi-media apparatus

H04N1/0032

with a medium handling apparatus, e.g. a sheet sorter handling thin or filamentary material, e.g. sheets B65H

H04N1/00323

with a measuring, monitoring or signaling apparatus, e.g. for transmitting measured information to a central location

H04N1/00326

with a data reading, recognizing or recording apparatus, e.g. with a bar-code apparatus arrangements for the associated working of recording or reproducing apparatus with related apparatus G11B31/00

H04N1/00328

with an apparatus processing optically-read information

H04N1/00331

with an apparatus performing optical character recognition character recognition G06V30/10

H04N1/00334

with an apparatus processing barcodes or the like arrangements for sensing record carriers G06K7/00

H04N1/00336

with an apparatus performing pattern recognition, e.g. of a face or a geographic feature image or video recognition or understanding of scenes G06V20/00

H04N1/00339

with an electronic or magnetic storage medium I/O device RFID or the like H04N1/00342

H04N1/00342

with a radio frequency tag transmitter or receiver storage of additional information in an RFID tag attached to an image bearing paper sheet H04N1/32138

H04N1/00344

with a management, maintenance, service or repair apparatus monitoring H04N1/00002

H04N1/00347

with another still picture apparatus, e.g. hybrid still picture apparatus circuits or arrangements for control or supervision between image input and image output device H04N1/32

H04N1/0035

User-machine interface; Control console input or output arrangements for computers G06F3/00

H04N1/00352

Input means H04N1/00411 takes precedence; input arrangements for computers G06F3/00

H04N1/00355

Mark-sheet input sensing record carriers G06K7/00; character recognition G06V30/10; document-oriented image-based pattern recognition G06V30/40

H04N1/00358

Type of the scanned marks

H04N1/0036

Alphanumeric symbols

H04N1/00363

Bar codes or the like

H04N1/00366

Marks in boxes or the like, e.g. crosses or blacking out H04N1/0036 takes precedence

H04N1/00368

Location of the scanned marks

H04N1/00371

on a separate sheet

H04N1/00374

on the same page as at least a part of the image

H04N1/00376

Means for identifying a mark sheet or area

H04N1/00379

Means for enabling correct scanning of a mark sheet or area, e.g. registration or timing marks

H04N1/00381

Input by recognition or interpretation of visible user gestures manual input means, e.g. digitisers, writing tablets H04N1/00392; gesture input to computers G06F3/017; recognition algorithms G06V40/20

H04N1/00384

Key input means, e.g. buttons or keypads electromechanical details of key input means in general H01H13/00

H04N1/00387

Multiple functions per key

H04N1/00389

Programmable function keys, e.g. for one-touch operation H04N1/00387 takes precedence; for automation of transmitter jobs H04N1/32058

H04N1/00392

Other manual input means, e.g. digitisers or writing tablets

H04N1/00395

Arrangements for reducing operator input input arrangements for job or mode instructions or parameters H04N1/00962; intelligent menu interfaces H04N1/00437

H04N1/00397

Switches, knobs or the like

H04N1/004

Rocker or tumbler switches

H04N1/00403

Voice input means, e.g. voice commands

H04N1/00405

Output means output arrangements for computers G06F3/00

H04N1/00408

Display of information to the user, e.g. menus

H04N1/00411

the display also being used for user input, e.g. touch screen

H04N1/00413

using menus, i.e. presenting the user with a plurality of selectable options H04N1/00464 takes precedence

H04N1/00416

Multi-level menus

H04N1/00419

Arrangements for navigating between pages or parts of the menu

H04N1/00421

using drop-down menus

H04N1/00424

using a list of graphical elements, e.g. icons or icon bar

H04N1/00427

using a menu list H04N1/00421, H04N1/00424, H04N1/00429 take precedence

H04N1/00429

using a navigation tree

H04N1/00432

using tabs

H04N1/00435

arranged in a predetermined sequence, e.g. using next and previous buttons

H04N1/00437

Intelligent menus, e.g. anticipating user selections

H04N1/0044

for image preview or review, e.g. to help the user position a sheet

H04N1/00442

Simultaneous viewing of a plurality of images, e.g. using a mosaic display arrangement of thumbnails

H04N1/00445

arranged in a one dimensional array

H04N1/00448

horizontally

H04N1/0045

vertically

H04N1/00453

arranged in a two dimensional array

H04N1/00456

for layout preview, e.g. page layout

H04N1/00458

Sequential viewing of a plurality of images, e.g. browsing or scrolling

H04N1/00461

marking or otherwise tagging one or more displayed image, e.g. for selective reproduction

H04N1/00464

using browsers, i.e. interfaces based on mark-up languages

H04N1/00466

displaying finishing information, e.g. position of punch holes or staple or orientation references

H04N1/00469

with enlargement of a selected area of the displayed information

H04N1/00472

using a pop-up window

H04N1/00474

outputting a plurality of functional options, e.g. scan, copy or print

H04N1/00477

Indicating status, e.g. of a job for control or supervision between transmitter and receiver or between image input and image output device H04N2201/3219

H04N1/0048

Indicating an illegal or impossible operation or selection to the user

H04N1/00482

outputting a plurality of job set-up options, e.g. number of copies, paper size or resolution

H04N1/00485

providing a hardcopy output to the user, e.g. print out

H04N1/00488

providing an audible output to the user

H04N1/0049

providing a visual indication to the user, e.g. using a lamp H04N1/00408 takes precedence

H04N1/00493

Particular location of the interface or console

H04N1/00496

Constructional details of the interface or console not otherwise provided for, e.g. rotating or tilting means

H04N1/00498

Multi-lingual facilities

H04N1/00501

Tailoring a user interface [UI] to specific requirements

H04N1/00503

Customising to a particular machine or model, machine function or application

H04N1/00506

Customising to the data to be displayed

H04N1/00509

Personalising for a particular user or group of users, e.g. a workgroup or company

H04N1/00511

for a group of users, e.g. a workgroup, company, or a service provider

H04N1/00514

for individual users

H04N1/00517

involving favourite or frequently used settings

H04N1/00519

Constructional details not otherwise provided for, e.g. housings, covers

H04N1/00522

Reducing apparatus footprint, e.g. wall-mounted or vertically arranged apparatus

H04N1/00525

Providing a more compact apparatus, e.g. sheet discharge tray in cover

H04N1/00527

Discharge tray at least partially sandwiched between image generating and reproducing components

H04N1/0053

Discharge tray in cover

H04N1/00533

using slidably mounted components, e.g. reader in drawer

H04N1/00535

using rotatably mounted or foldable components

H04N1/00538

Modular devices, i.e. allowing combinations of separate components, removal or replacement of components

H04N1/00541

with detachable image reading apparatus

H04N1/00543

Allowing easy access, e.g. for maintenance or in case of paper jam H04N1/00538 takes precedence

H04N1/00546

using a side opening

H04N1/00549

Counter-measures for mechanical vibration not otherwise provided for

H04N1/00551

Top covers or the like

H04N1/00554

Latches or hinges therefor

H04N1/00557

Connection or assembly of components or elements H04N1/00538 takes precedence

H04N1/00559

Mounting or support of components or elements H04N1/00538 takes precedence

H04N1/00562

Supporting the apparatus as a whole, e.g. stands

H04N1/00564

Constructional details relating to ergonomic aspects

H04N1/00567

Handling of original or reproduction media, e.g. cutting, separating, stacking

H04N1/0057

Conveying sheets before or after scanning arrangements for conveying sheets as part of the scanning operation H04N1/04 and subgroups

H04N1/00572

with refeeding for double-sided scanning, e.g. using one scanning head for both sides of a sheet

H04N1/00575

Inverting the sheet prior to refeeding

H04N1/00578

using at least part of a loop, e.g. using a return loop

H04N1/0058

using at least one dead-end path, e.g. using a sheet ejection path

H04N1/00583

by rotating the sheet about an axis lying in its plane

H04N1/00586

Inverting the scanning elements with respect to the scanning plane prior to refeeding

H04N1/00588

to the scanning position H04N1/00572, H04N1/00594 take precedence

H04N1/00591

from the scanning position H04N1/00572 takes precedence

H04N1/00594

along at least a part of the same path as transport to the scanning position H04N1/00575 takes precedence

H04N1/00596

using at least a part of the apparatus in common for transporting to or from a plurality of scanning positions, e.g. for reading and printing

H04N1/00599

Using specific components details of components related to handling thin or filamentary material B65H

H04N1/00602

Feed rollers

H04N1/00604

Transport trays

H04N1/00607

Grippers or the like, e.g. suction grippers

H04N1/0061

Feed belts

H04N1/00612

Path switches H04N1/00575, H04N1/00623, H04N1/00633 take precedence

H04N1/00615

Guiding elements, e.g. plates

H04N1/00618

Transporting curved sheets or curving sheets during transportation, e.g. for feeding to a drum-type scanner

H04N1/0062

Removing sheets from a stack or inputting media

H04N1/00623

Selectively inputting media from one of a plurality of input sources, e.g. input trays

H04N1/00625

Removing sheets selectively from the top or bottom of a single stack or tray

H04N1/00628

Separating, e.g. preventing feeding of two sheets at a time

H04N1/00631

Ejecting or stacking H04N1/00641 takes precedence

H04N1/00633

selectively to one of a plurality of output trays H04N1/00641 takes precedence

H04N1/00636

Ejecting sheets selectively to the top or bottom of a single stack or tray

H04N1/00639

Binding, stapling, folding or perforating, e.g. punching

H04N1/00641

Sorting, reordering or inverting postal sorting or sorting individual articles B07C

H04N1/00644

Counting or calculating, e.g. a number of remaining sheets

H04N1/00647

Decurling

H04N1/00649

Control or synchronising different handling operations H04N1/00657 takes precedence

H04N1/00652

Control of feeding speed, e.g. fast feeding to scanning position H04N1/00673 takes precedence

H04N1/00655

Apparatus in common for different handling operations H04N1/00575, H04N1/00594, H04N1/00596, H04N1/00618 take precedence

H04N1/00657

Compensating for different handling speeds of different apparatus or arrangements for handling a plurality of sheets simultaneously, e.g. mechanical buffering

H04N1/0066

Aligning or positioning related to handling

H04N1/00663

Indicating relating to handling of media

H04N1/00665

Details specific to handling of web-shaped media, e.g. paper or film rolls

H04N1/00668

Removing the medium from a cassette, spindle or the like

H04N1/00671

Winding or feeding the medium into a cassette or onto a spindle or the like

H04N1/00673

Controlling the amount of slack or tension control

H04N1/00676

Cutting

H04N1/00679

after scanning

H04N1/00681

Detecting the presence, position or size of a sheet or correcting its position before scanning H04N1/047 takes precedence; mode signalling H04N1/333; skew detection or correction in image signals H04N1/3878

H04N1/00684

Object of the detection

H04N1/00687

Presence or absence

H04N1/00689

Presence

H04N1/00692

Absence

H04N1/00694

in an input tray

H04N1/00697

in an output tray

H04N1/007

of holder, e.g. film mount

H04N1/00702

Position

H04N1/00705

at a plurality of spaced apart locations, e.g. as a sheet is fed through the apparatus

H04N1/00708

Size or dimensions

H04N1/0071

Width

H04N1/00713

Length

H04N1/00716

Thickness

H04N1/00718

Skew

H04N1/00721

Orientation

H04N1/00724

Type of sheet, e.g. colour of paper or transparency

H04N1/00726

Other properties of the sheet, e.g. curvature or reflectivity

H04N1/00729

Detection means

H04N1/00732

Mechanical detectors

H04N1/00734

Optical detectors

H04N1/00737

using the scanning elements as detectors

H04N1/0074

using inactive scanning elements, e.g. elements outside the scanning area

H04N1/00742

Detection methods

H04N1/00745

Detecting the leading or trailing ends of a moving sheet

H04N1/00748

Detecting edges, e.g. of a stationary sheet

H04N1/0075

Detecting a change in reflectivity

H04N1/00753

of a sheet relative to a particular backgroud

H04N1/00755

Detecting an interruption of light

H04N1/00758

using a prescan

H04N1/00761

using reference marks, e.g. on sheet, sheet holder or guide

H04N1/00763

Action taken as a result of detection

H04N1/00766

Storing data

H04N1/00769

Comparing, e.g. with threshold

H04N1/00771

Indicating or reporting, e.g. issuing an alarm

H04N1/00774

Adjusting or controlling

H04N1/00777

Inhibiting, e.g. an operation

H04N1/00779

Adjusting settings, e.g. mode, feeding rate or type of paper

H04N1/00782

Initiating operations

H04N1/00785

Correcting the position of a sheet before scanning

H04N1/00787

using mechanical means

H04N1/0079

using guide or holder

H04N1/00793

using paper feeding mechanism, e.g. operate drive rollers at different speeds

H04N1/00795

Reading arrangements details of scanning heads H04N1/024; scanning arrangements therefor H04N1/04

H04N1/00798

Circuits or arrangements for the control thereof, e.g. using a programmed control device or according to a measured quantity

H04N1/00801

according to characteristics of the original

H04N1/00803

Presence or absence of information

H04N1/00806

According to type of the original, e.g. colour paper or transparency, or reading a plurality of different types of original

H04N1/00809

Orientation

H04N1/00811

according to user specified instructions, e.g. user selection of reading mode

H04N1/00814

according to a detected condition or state of the reading apparatus, e.g. temperature

H04N1/00816

Determining the reading area, e.g. eliminating reading of margins

H04N1/00819

Self-calibrating reading means

H04N1/00822

Selecting or setting a particular reading mode, e.g. from amongst a plurality of modes, simplex or duplex, or high or low resolution

H04N1/00824

for displaying or indicating, e.g. a condition or state details of displaying or indicating means H04N1/00405

H04N1/00827

Arrangements for reading an image from an unusual original, e.g. 3-dimensional objects

H04N1/0083

Arrangements for transferring signals between different components of the apparatus, e.g. arrangements of signal lines or cables for control or supervision between image input and output device H04N1/32

H04N1/00832

Recording use, e.g. counting number of pages copied

H04N1/00835

Detecting external or ambient light

H04N1/00838

Preventing unauthorised reproduction

H04N1/0084

Determining the necessity for prevention

H04N1/00843

based on recognising a copy prohibited original, e.g. a banknote pattern authentication and markers therefor, forgery detection G06V20/95; character recognition G06V30/10; document-oriented image-based pattern recognition G06V30/40; testing paper currency or similar valuable papers for genuineness G07D7/00

H04N1/00846

based on detection of a dedicated indication, e.g. marks or the like

H04N1/00848

by detecting a particular original

H04N1/00851

externally to or remotely from the reproduction apparatus, e.g. using a connected apparatus

H04N1/00854

Recognising an unauthorised user or user-associated action

H04N1/00856

Preventive measures

H04N1/00859

Issuing an alarm or the like

H04N1/00862

Retaining the original

H04N1/00864

Modifying the reproduction, e.g. outputting a modified copy of a scanned original details of composing or otherwise geometrically modifying originals H04N1/387

H04N1/00867

with additional data, e.g. by adding a warning message details of embedding additional information in an image H04N1/32144

H04N1/0087

with hidden additional data, e.g. data invisible to the human eye

H04N1/00872

by image quality reduction, e.g. distortion or blacking out

H04N1/00875

Inhibiting reproduction, e.g. by disabling reading or reproduction apparatus

H04N1/00877

Recording information, e.g. details of the job

H04N1/0088

Detecting or preventing tampering attacks on the reproduction system

H04N1/00883

Auto-copy-preventive originals, i.e. originals that are designed not to allow faithful reproduction

H04N1/00885

Power supply means, e.g. arrangements for the control of power supply to the apparatus or components thereof

H04N1/00888

Control thereof

H04N1/00891

Switching on or off, e.g. for saving power when not in use H04N1/00896 takes precedence

H04N1/00893

using a back-up supply, e.g. in case of main-supply failure

H04N1/00896

using a low-power mode, e.g. standby

H04N1/00899

Detection of supply level or supply failure

H04N1/00901

Using different supplies or connection to an external supply H04N1/00893, H04N1/00896 take precedence

H04N1/00904

Arrangements for supplying power to different circuits or for supplying power at different levels H04N1/00896 takes precedence

H04N1/00907

Details of supply connection, e.g. arrangement of power cables H04N1/00901 and H04N1/00904 take precedence

H04N1/00909

Cleaning arrangements or preventing or counter-acting contamination from dust or the like cleaning in general, prevention of fouling in general B08B

H04N1/00912

Arrangements for controlling a still picture apparatus or components thereof not otherwise provided for

H04N1/00915

Assigning priority to, or interrupting, a particular operation

H04N1/00917

Resuming after an intentional interruption, e.g. resetting parameters

H04N1/0092

Assigning priority according to size job or task, e.g. small jobs first

H04N1/00923

Variably assigning priority H04N1/0092 takes precedence

H04N1/00925

Inhibiting an operation

H04N1/00928

Initialisation or control of normal start-up or shut-down, i.e. non failure or error related

H04N1/00931

Synchronising different operations or sub-apparatus, e.g. controlling on-times taking into account different warm-up times

H04N1/00933

Timing control or synchronising H04N1/00928, H04N1/00931, H04N1/00954 and H04N1/0096 take precedence

H04N1/00936

Skipping a function or process step

H04N1/00938

Software related arrangements, e.g. loading applications program loading in general G06F9/445

H04N1/00941

Interaction of different applications H04N1/00949 takes precedence; multiprogramming arrangements of computers G06F9/46

H04N1/00944

using hot folders, i.e. folders or directories which trigger an action when written to or accessed

H04N1/00946

Details of actions associated with a hot folder

H04N1/00949

Combining applications, e.g. to create workflows allocation of computer machine resources considering the execution order of a plurality of tasks G06F9/5038

H04N1/00952

Using a plurality of control devices, e.g. for different functions

H04N1/00954

Scheduling operations or managing resources H04N1/0096 takes precedence; program initiating or switching G06F9/48; allocation of computer resources G06F9/50

H04N1/00957

Compiling jobs, e.g. for batch processing H04N1/3208 takes precedence; program code compilation G06F8/41

H04N1/0096

Simultaneous or quasi-simultaneous functioning of a plurality of operations H04N1/32545 takes precedence; multiprogramming arrangements of computers G06F9/46

H04N1/00962

Input arrangements for operating instructions or parameters, e.g. updating internal software program loading in general G06F9/445; network-specific protocols involving the movement of software or configuration parameters H04L67/34

H04N1/00965

using a plug-in memory module, e.g. memory card, memory stick

H04N1/00968

by scanning marks on a sheet mark-sheet input means H04N1/00355; sensing record carriers G06K7/00

H04N1/0097

Storage of instructions or parameters, e.g. customised instructions or different parameters for different user IDs

H04N1/00973

from a remote device, e.g. receiving via the internet instructions input to a computer terminal

H04N1/00976

Arrangements for regulating environment, e.g. removing static electricity

H04N1/00978

Temperature control

H04N1/00981

by forced convection, e.g. using fans

H04N1/00984

using fins or the like

H04N1/00986

Heating

H04N1/00989

by natural convection, e.g. using fins without a fan

H04N1/00992

Humidity control, e.g. removing condensation

H04N1/00994

Compensating for electric noise, e.g. electromagnetic interference

H04N1/00997

Light control, e.g. shielding from ambient light or preventing light leakage

H04N1/024

Details of scanning heads

; Means for illuminating the original

H04N1/02409

Focusing, i.e. adjusting the focus of the scanning head

H04N1/02418

for picture information pick up and reproduction

H04N1/02427

in different planes

H04N1/02436

using a single head selectively and alternately arranged to scan in the different planes

H04N1/02445

in the same plane

H04N1/02454

using interchangeable heads

H04N1/02463

using heads mounted on the same support or substrate

H04N1/02472

using a single head, i.e. for pick up and reproduction H04N1/02436 takes precedence

H04N1/02481

Arrangements for positioning elements within a head H04N1/02409 takes precedence

H04N1/0249

Arrangements for mounting or supporting elements within a scanning head H04N1/02481 takes precedence

H04N1/028

for picture information pick-up

H04N1/02805

with photodetectors arranged in a two-dimensional array

H04N1/0281

with means for collecting light from a line or an area of the original and for guiding it to only one or a relatively low number of picture element detectors

H04N1/02815

Means for illuminating the original, not specific to a particular type of pick-up head

H04N1/0282

Using a single or a few point light sources, e.g. a laser diode

H04N1/02825

in combination with at least one reflector which is fixed in relation to the light source H04N1/02835 and H04N1/0284 take precedence

H04N1/0283

in combination with a light deflecting element, e.g. a rotating mirror

H04N1/02835

in combination with a light guide, e.g. optical fibre, glass plate light-guides per se

G02B6/00

H04N1/0284

in combination with a light integrating, concentrating or diffusing cavity

H04N1/02845

using an elongated light source, e.g. tubular lamp, LED array

H04N1/0285

in combination with at least one reflector which is in fixed relation to the light source

H04N1/02855

in combination with a light guide, e.g. optical fibre, glass plate light-guides per se

G02B6/00

H04N1/0286

in combination with a light integrating, concentrating or defusing cavity

H04N1/02865

using an array of light sources or a combination of such arrays, e.g. an LED bar

H04N1/0287

using a tubular lamp or a combination of such lamps

H04N1/02875

comprising a reflective coating

H04N1/0288

using a two-dimensional light source, e.g. two-dimensional LED array

H04N1/02885

Means for compensating spatially uneven illumination, e.g. an aperture arrangement

H04N1/0289

Light diffusing elements, e.g. plates or filters optical diffusing elements per se

G02B5/02

H04N1/02895

Additional elements in the illumination means or cooperating with the illumination means, e.g. filters H04N1/02885 takes precedence; optical elements other than lenses per se

G02B5/00

H04N1/029

Heads optically focused on only one picture element at a time

H04N1/0281 takes precedence

H04N1/03

with photodetectors arranged in a substantially linear array

H04N1/0301

using a bent optical path between the scanned line and the photodetector array, e.g. a folded optical path

H04N1/0303

with the scanned line and the photodetector array lying in non-parallel planes

H04N1/0305

with multiple folds of the optical path

H04N1/0306

using a plurality of optical elements arrayed in the main scan direction, e.g. an array of lenses

H04N1/0308

characterised by the design of the photodetectors, e.g. shape

H04N1/031

the photodetectors having a one-to-one and optically positive correspondence with the scanned picture elements, e.g. linear contact sensors

H04N1/0311

using an array of elements to project the scanned image elements onto the photodetectors H04N1/0318 takes precedence

H04N1/0312

using an array of optical fibres or rod-lenses

H04N1/0313

Direct contact pick-up heads, i.e. heads having no array of elements to project the scanned image elements onto the photodectors

H04N1/0314

using photodetectors and illumination means mounted in the same plane on a common support or substrate

H04N1/0315

using photodetectors and illumination means mounted on separate supports or substrates or mounted in different planes

H04N1/0316

illuminating the scanned image elements through the plane of the photodetector, e.g. back-light illumination

H04N1/0317

detecting the scanned image elements through the plane of the illumination means

H04N1/0318

Integral pick-up heads, i.e. self-contained heads whose basic elements are a light-source, a lens array and a photodetector array which are supported by a single-piece frame

H04N1/032

for picture information reproduction

H04N1/0323

Heads moving to and away from the reproducing medium, e.g. for pressure sensitive reproducing

H04N1/0326

Magnetic heads

H04N1/034

using ink, e.g. ink-jet heads

H04N1/0323 takes precedence

H04N1/036

for optical reproduction

H04N1/04

Scanning arrangements

, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa

H04N1/387 takes precedence

H04N1/0402

Scanning different formats; Scanning with different densities of dots per unit length, e.g. different numbers of dots per inch (dpi); Conversion of scanning standards H04N1/00283 takes precedence; picture signal circuits for modification of image resolution H04N1/3935, H04N1/40068

H04N1/0405

Different formats, e.g. A3 and A4

H04N1/0408

Different densities of dots per unit length

H04N1/0411

in the main scanning direction

H04N1/0414

in the sub scanning direction

H04N1/0417

Conversion of standards

H04N1/042

Details of the method used

H04N1/0423

Switching between or selecting from a plurality of optical paths

H04N1/0426

using different sized scanning elements, e.g. reproducing different sized dots

H04N1/0429

Varying the size of apertures

H04N1/0432

Varying the magnification of a single lens group

H04N1/0435

Optical element switching, e.g. switching lenses into a single optical path

H04N1/0437

Tilting an array with respect to the main or sub scanning direction

H04N1/044

Tilting an optical element, e.g. a refractive plate H04N1/0423 takes precedence

H04N1/0443

Varying the scanning velocity or position

H04N1/0446

Varying the modulation time or intensity

H04N1/0449

using different sets of scanning elements, e.g. for different formats

H04N1/0452

mounted on the same support or substrate

H04N1/0455

using a single set of scanning elements, e.g. the whole of and a part of an array respectively for different formats

H04N1/0458

using different portions of the scanning elements for different formats or densities of dots

H04N1/0461

part of the apparatus being used in common for reading and reproducing simultaneous scanning of the original picture and the reproduced picture with a common scanning device H04N1/207

H04N1/0464

capable of performing non-simultaneous scanning at more than one scanning station

H04N1/0467

the different stations being used for transmissive and reflective originals

H04N1/047

Detection, control or error compensation of scanning velocity or position

H04N1/0402 and

H04N1/17 take precedence

H04N1/0473

in subscanning direction, e.g. picture start or line-to-line synchronisation

H04N1/0476

Indicating the scanning velocity

H04N1/053

in main scanning direction, e.g. synchronisation of line start or picture elements in a line

H04N1/06

using cylindrical picture-bearing surfaces

, i.e. scanning a main-scanning line substantially perpendicular to the axis and lying in a curved cylindrical surface

H04N1/0607

Scanning a concave surface, e.g. with internal drum type scanners H04N1/0657 takes precedence

H04N1/0614

with main-scanning by rotation of the picture-bearing surface

H04N1/0621

using a picture-bearing surface stationary in the main-scanning direction

H04N1/0628

using several scanning heads circumferentially spaced from one another and circumferentially aligned, e.g. mounted on a rotating disk

H04N1/0635

using oscillating or rotating mirrors

H04N1/0642

Scanners capable of scanning the total circumference of a closed cylinder

H04N1/065

using rotating prisms

H04N1/0657

Scanning a transparent surface, e.g. reading a transparency original

H04N1/0664

with sub-scanning by translational movement of the picture-bearing surface

H04N1/0671

with sub-scanning by translational movement of the main-scanning components

H04N1/0678

using a lead-screw or worm

H04N1/0685

using a belt or cable

H04N1/0692

Details of the cylindrical surface for mounting or holding the sheet H04N1/08

H04N1/08

Mechanisms for mounting or holding the sheet around the drum

H04N1/0804

Holding methods

H04N1/0808

Holding corners of the sheet

H04N1/0813

Holding sides of the sheet which are substantially parallel to the drum axis

H04N1/0817

Holding sides of the sheet which are substantially perpendicular to the drum axis

H04N1/0821

Holding substantially the whole of the sheet, e.g. with a retaining sheet

H04N1/0826

Holding or supporting the sheet in the vicinity of the scanning element

H04N1/083

Holding means

H04N1/0834

Flexible holding means, e.g. envelopes or sheaths

H04N1/0839

Mechanical clamps, i.e. means for holding the sheet against the drum by mechanical force

H04N1/0843

Pins or the like

H04N1/0847

Magnetic means

H04N1/0852

Adhesive means

H04N1/0856

Suction or vacuum means

H04N1/086

using grooves

H04N1/0865

Single holding means holding both ends of a sheet

H04N1/0869

capable of holding different sized sheets

H04N1/0873

for holding the sheet on the internal surface of the drum

H04N1/0878

for holding a sheet adjacent an aperture on an opaque drum

H04N1/0882

Registering or guiding means other than the holding means

H04N1/0886

Mounting the sheet from a roll

H04N1/0891

Detecting failure of the holding, e.g. by detecting a loose sheet

H04N1/0895

Means other than holding means for removing the sheet form the drum

H04N1/10

using flat picture-bearing surfaces

H04N1/113, H04N1/195 take precedence

H04N1/1004

using two-dimensional electrical scanning, e.g. cathode-ray tubes using two-dimensional arrays H04N1/195

H04N1/1008

with sub-scanning by translatory movement of the picture-bearing surface

H04N1/1013

with sub-scanning by translatory movement of at least a part of the main-scanning components H04N1/107 takes precedence

H04N1/1017

the main-scanning components remaining positionally invariant with respect to one another in the sub-scanning direction

H04N1/1021

using a lead screw or worm

H04N1/1026

using a belt or cable

H04N1/103

by engaging a rail

H04N1/1035

by other means, e.g. linear motor or hydraulic system

H04N1/1039

Movement of the main scanning components

H04N1/1043

of a sensor array

H04N1/1048

of a lens or lens arrangement

H04N1/1052

of a mirror

H04N1/1056

of two or more separate mirror arrangements

H04N1/1061

Details relating to flat picture-bearing surfaces, e.g. transparent platen

H04N1/1065

Support or mounting of the flat picture-bearing surface

H04N1/107

with manual scanning

H04N1/1071

using a folded light path

H04N1/1072

Means for guiding the scanning, e.g. rules H04N1/1077 takes precedence

H04N1/1074

Apparatus incorporating a hardcopy reproducing device, e.g. a printer, not working directly by manual scanning

H04N1/1075

Arrangements for facilitating holding of the scanner, e.g. shapes, grips

H04N1/1077

Arrangements for facilitating movement over the scanned medium, e.g. disposition of rollers

H04N1/1078

by moving the scanned medium

H04N1/113

using oscillating or rotating mirrors

H04N1/1135

for the main-scan only

H04N1/12

using the sheet-feed movement

or the medium-advance or the drum-rotation movement

as the slow scanning component,

e.g. arrangements for the main-scanning

sheet-feed movement by translatory movement of a flat picture-bearing surface H04N1/1008; main-scanning using oscillating or rotating mirrors H04N1/113;

using multi-element arrays H04N1/19

H04N1/1205

using a device, e.g. an optical fibre bundle, converting rectilinear scanning into circular line scanning or vice versa

H04N1/121

Feeding arrangements transporting sheets to or from the scanning position H04N1/0057; control or error compensation of sub-scanning velocity H04N1/0473

H04N1/1215

Feeding using one or more cylindrical platens or rollers in the immediate vicinity of the main scanning line

H04N1/122

using a feed belt feed belts for transporting to or from the scanning position H04N1/0061

H04N1/1225

Means for maintaining contact between the sheet and the image sensor, e.g. pressing means

H04N1/123

Using a dedicated sheet guide element

H04N1/1235

Feeding a sheet past a transparent plate; Details thereof

H04N1/124

Plate shape

H04N1/1245

Arrangements for mounting or holding the plate

H04N1/125

the sheet feeding apparatus serving an auxiliary function, e.g. as a white reference

H04N1/1255

Electronic copy boards

H04N1/126

Arrangements for the main scanning

H04N1/1265

using a holographic scanning element

H04N1/127

using a cathode ray tube or the like

H04N1/1275

using a solid-state deflector, e.g. an acousto-optic deflector or a semiconductor waveguide device

H04N1/128

using a scanning head arranged for linear reciprocating motion

H04N1/1285

using apertures arranged in a spiral

H04N1/129

using an element rotating or oscillating about an axis not covered by any other group or code

H04N1/1295

using an optical guide, e.g. a fibre-optic bundle between the scanned line and the scanning elements

H04N1/14

using a rotating endless belt carrying the scanning heads

or at least a part of the main scanning components

H04N1/16

using a rotating helical element

H04N1/17

the scanning speed being dependent on content of picture

H04N1/19

using multi-element arrays

H04N1/1903

Arrangements for enabling electronic abutment of lines or areas independently scanned by different elements of an array or by different arrays

H04N1/1906

Arrangements for performing substitution scanning for a defective element

H04N1/191

the array comprising a one-dimensional array

, or a combination of one-dimensional arrays, or a substantially one-dimensional array, e.g. an array of staggered elements

H04N1/1911

Simultaneously or substantially simultaneously scanning picture elements on more than one main scanning line, e.g. scanning in swaths

H04N1/1912

Scanning main scanning lines which are spaced apart from one another in the sub-scanning direction

H04N1/1913

Scanning adjacent picture elements in different scans of the array, e.g. in complementary checkerboard patterns

H04N1/1915

with subscan displacement of the array between successive scans

H04N1/1916

using an array of elements displaced from one another in the main scan direction, e.g. a diagonally arranged array

H04N1/1917

Staggered element array, e.g. arrays with elements arranged in a zigzag

H04N1/1918

Combination of arrays

H04N1/192

Simultaneously

or substantially simultaneously

scanning picture elements on one main scanning line

H04N1/193

using electrically scanned linear arrays

, e.g. linear CCD arrays

H04N1/1931

with scanning elements electrically interconnected in groups

H04N1/1932

using an array of elements displaced from one another in the sub scan direction, e.g. a diagonally arranged array

H04N1/1933

Staggered element arrays, e.g. arrays with elements arranged in a zigzag

H04N1/1934

Combination of arrays

H04N1/1935

Optical means for mapping the whole or part of a scanned line onto the array

H04N1/1936

using a light guide, e.g. an optical fibre bundle or array

H04N1/1937

using a reflecting element, e.g. a mirror or a prism

H04N1/1938

Details of the electrical scanning

H04N1/195

the array comprising a two-dimensional array

or a combination of two-dimensional arrays

H04N1/19505

Scanning picture elements spaced apart from one another in at least one direction

H04N1/1951

in one direction

H04N1/19515

in two directions

H04N1/19521

Arrangements for moving the elements of the array relative to the scanned image or vice versa

H04N1/19526

Optical means

H04N1/19531

Reflecting elements

H04N1/19536

Refracting elements

H04N1/19542

Fibre bundles

H04N1/19547

Apertures

H04N1/19552

Rotation of optical elements

H04N1/19557

about an axis parallel to the optical axis

H04N1/19563

about an axis perpendicular to the optical axis

H04N1/19568

Displacing the array

H04N1/19573

Displacing the scanned image

H04N1/19578

Hybrid systems, i.e. systems combining more than one arrangement for moving the elements of the array relative to the scanned image or vice versa

H04N1/19584

Combination of arrays

H04N1/19589

Optical means, e.g. an optical fibre bundle, for mapping the whole or a part of a scanned image onto the array

H04N1/19594

using a television camera or a still video camera

H04N1/203

Simultaneous scanning of two or more separate pictures

, e.g. two sides of the same sheet refeeding a sheet for double-sided scanning H04N1/00572

H04N1/2032

of two pictures corresponding to two sides of a single medium refeeding a sheet for double-sided scanning H04N1/00572

H04N1/2034

at identical corresponding positions, i.e. without time delay between the two image signals

H04N1/2036

of a plurality of pictures corresponding to a single side of a plurality of media

H04N1/2038

lying in the same plane

H04N1/207

Simultaneous scanning of the original picture and the reproduced picture with a common scanning device

H04N1/21

Intermediate information storage H04N1/387, H04N1/41 take precedence

; for control between transmitter and receiver or between image input and image output device H04N1/32358; indexing, editing G11B27/00

H04N1/2104

for one or a few pictures

H04N1/2108

for one picture only

H04N1/2112

using still video cameras

H04N1/2116

Picture signal recording combined with imagewise recording, e.g. photographic recording photographic cameras G03B19/00

H04N1/212

Motion video recording combined with still video recording television signal recording H04N5/76

H04N1/2125

Display of information relating to the still picture recording

H04N1/2129

Recording in, or reproducing from, a specific memory area or areas, or recording or reproducing at a specific moment

H04N1/2133

Recording or reproducing at a specific moment, e.g. time interval or time-lapse

H04N1/2137

with temporary storage before final recording, e.g. in a frame buffer

H04N1/2141

in a multi-frame buffer

H04N1/2145

of a sequence of images for selection of a single frame before final recording, e.g. from a continuous sequence captured before and after shutter-release

H04N1/215

Recording a sequence of still pictures, e.g. burst mode

H04N1/2154

the still video camera incorporating a hardcopy reproducing device, e.g. a printer

H04N1/2158

using a detachable storage unit

H04N1/2162

using a non electronic storage unit, e.g. by recording marks on a sheet

H04N1/2166

for mass storage, e.g. in document filing systems information retrieval G06F16/00

H04N1/217

Interfaces allowing access to a single user

H04N1/2175

with local image input

H04N1/2179

Interfaces allowing access to a plurality of users, e.g. connection to electronic image libraries

H04N1/2183

the stored images being distributed among a plurality of different locations, e.g. among a plurality of users

H04N1/2187

with image input from a plurality of different locations or from a non-central location, e.g. from one or more users

H04N1/2191

for simultaneous, independent access by a plurality of different users

H04N1/2195

with temporary storage before final recording or on play-back, e.g. in a frame buffer

H04N1/23

Reproducing arrangements

H04N1/2307

Circuits or arrangements for the control thereof, e.g. using a programmed control device, according to a measured quantity H04N1/27, H04N1/29 take precedence

H04N1/2315

according to characteristics of the reproducing apparatus, e.g. capability

H04N1/2323

according to characteristics of the reproducing medium, e.g. type, size or availability

H04N1/233

according to characteristics of the data to be reproduced, e.g. number of lines

H04N1/2338

according to user specified instructions, e.g. user selection of reproduction mode

H04N1/2346

according to a detected condition or state of the reproducing device, e.g. temperature or ink quantity

H04N1/2353

Selecting a particular reproducing medium from amongst a plurality of media or from a particular tray, e.g. paper or transparency

H04N1/2361

Selecting a particular reproducing device from amongst a plurality of devices, e.g. high or low resolution devices

H04N1/2369

Selecting a particular reproducing mode from amongst a plurality of modes, e.g. paper saving or normal, or simplex or duplex

H04N1/2376

Inhibiting or interrupting a particular operation or device preventing unauthorised reproduction H04N1/00838

H04N1/2384

for fitting data onto a particular reproducing medium without modifying the image data

H04N1/2392

for displaying or indicating, e.g. a condition or state details of displaying or indicating means H04N1/00405

H04N1/27

involving production of a magnetic intermediate picture

H04N1/29

involving production of an electrostatic intermediate picture

H04N1/295

Circuits or arrangements for the control thereof, e.g. using a programmed control device, according to a measured quantity

H04N1/31

Mechanical arrangements for picture transmission, e.g. adaptation of clutches, gearing, gear transmissions

H04N1/32

Circuits or arrangements for control or supervision between transmitter and receiver

or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device H04N1/38, H04N1/387 take precedence

H04N1/32005

Automation of particular receiver jobs, e.g. rejecting unwanted calls requesting a communication from a transmitter H04N1/32771; with picture signal storage for forwarding messages H04N1/32358

H04N1/3201

Rejecting unwanted calls

H04N1/32016

according to the caller's identification, e.g. fax number H04N1/3201 takes precedence

H04N1/32021

according to the type of received information

H04N1/32026

Changing the receiver mode of operation, e.g. paper reception to memory reception or vice versa H04N1/32673 takes precedence

H04N1/32032

Polling of transmitters

H04N1/32037

Automation of particular transmitter jobs, e.g. multi-address calling, auto-dialing

H04N1/32042

with reading of job-marks on a page

H04N1/32048

Auto-dialling or Auto-calling H04N1/32053 - H04N1/32074 take precedence

H04N1/32053

Delayed transmission, e.g. to make use of reduced connection rates H04N1/32074 takes precedence

H04N1/32058

Abbreviated dialing, e.g. one-touch dialing

H04N1/32064

Multi-address calling

H04N1/32069

simultaneously to a plurality of destinations, e.g. multi-casting

H04N1/32074

Redialing, e.g. after failure to make a connection

H04N1/3208

Transmitting a plurality of separate messages to a common destination in a single transmission

H04N1/32085

Automation of other tasks, e.g. repetitive execution or sequencing

H04N1/3209

according to the called number

H04N1/32096

Checking the destination, e.g. correspondence of manual input with stored destination

H04N1/32101

Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title

H04N1/32106

separate from the image data, e.g. in a different computer file

H04N1/32112

in a separate computer file, document page or paper sheet, e.g. a fax cover sheet H04N1/32122 takes precedence

H04N1/32117

in a separate transmission or protocol signal prior to or subsequent to the image data transmission, e.g. in digital identification signal [DIS], in non standard setup [NSS] or in non standard field [NSF] for mode signalling H04N1/333

H04N1/32122

in a separate device, e.g. in a memory or on a display separate from image data

H04N1/32128

attached to the image data, e.g. file header, transmitted message header, information on the same page or in the same computer file as the image for information embedded in the image H04N1/32144

H04N1/32133

on the same paper sheet, e.g. a facsimile page header

H04N1/32138

in an electronic device attached to the sheet, e.g. in an RFID tag

H04N1/32144

embedded in the image data, i.e. enclosed or integrated in the image, e.g. watermark, super-imposed logo or stamp

H04N1/32149

Methods relating to embedding, encoding, decoding, detection or retrieval operations

H04N1/32154

Transform domain methods H04N1/32309 takes precedence

H04N1/3216

using Fourier transforms

H04N1/32165

using cosine transforms

H04N1/3217

using wavelet transforms

H04N1/32176

using Walsh, Hadamard or Walsh-Hadamard transforms

H04N1/32181

using Karhunen-Loeve transforms

H04N1/32187

with selective or adaptive application of the additional information, e.g. in selected frequency coefficients

H04N1/32192

according to calculated or estimated visibility of the additional information in the image

H04N1/32197

according to the spatial domain characteristics of the transform domain components

H04N1/32203

Spatial or amplitude domain methods H04N1/32309 takes precedence

H04N1/32208

involving changing the magnitude of selected pixels, e.g. overlay of information or super-imposition H04N1/32219, H04N1/32224 take precedence

H04N1/32213

Modulating the least significant bits of pixels

H04N1/32219

involving changing the position of selected pixels, e.g. word shifting, or involving modulating the size of image components, e.g. of characters H04N1/32224 takes precedence

H04N1/32224

Replacing pixels of an image with other pixels from the same image, e.g. texture block coding

H04N1/32229

with selective or adaptive application of the additional information, e.g. in selected regions of the image H04N1/32213 takes precedence

H04N1/32235

in highly textured regions

H04N1/3224

in edge regions

H04N1/32245

Random or pseudorandom selection of pixels

H04N1/32251

in multilevel data, e.g. greyscale or continuous tone data

H04N1/32256

in halftone data

H04N1/32261

in binary data H04N1/32256 takes precedence

H04N1/32267

combined with processing of the image

H04N1/32272

Encryption or ciphering

H04N1/32277

Compression

H04N1/32283

Hashing

H04N1/32288

Multiple embedding, e.g. cocktail embedding, or redundant embedding, e.g. repeating the additional information at a plurality of locations in the image

H04N1/32293

Repeating the additional information in a regular pattern

H04N1/32299

using more than one embedding method

H04N1/32304

Embedding different sets of additional information

H04N1/32309

in colour image data

H04N1/32315

Selecting a particular method from amongst a plurality of methods

H04N1/3232

Robust embedding or watermarking

H04N1/32325

the embedded data being visible

H04N1/32331

Fragile embedding or watermarking

H04N1/32336

Informed embedding, i.e. the original image being known for the encoding or decoding method

H04N1/32341

Blind embedding, i.e. the original image not being known beforehand

H04N1/32347

Reversible embedding, i.e. lossless, invertible, erasable, removable or distorsion-free embedding

H04N1/32352

Controlling detectability or arrangements to facilitate detection or retrieval of the embedded information, e.g. using markers for decoding, detection or retrieval operations H04N1/32149 and subgroups take precedence

H04N1/32358

using picture signal storage, e.g. at transmitter H04N1/17 takes precedence

H04N1/32363

at the transmitter or at the receiver

H04N1/32368

Functions of a still picture terminal memory associated with transmission

H04N1/32374

Storage subsequent to an attempted transmission

H04N1/32379

Functions of a still picture terminal memory associated with reception

H04N1/32384

Storage subsequent to an attempted output at the receiver, e.g. in case of printer malfunction

H04N1/3239

Forwarding image data, e.g. to an absent recipient

H04N1/32395

Informing an absent addressee of receipt

H04N1/324

intermediate the transmitter and receiver terminals, e.g. at an exchange

H04N1/32406

in connection with routing or relaying, e.g. using a fax-server or a store-and-forward facility stored and forward data switching systems H04L12/54

H04N1/32411

Handling instructions for routing or relaying

H04N1/32416

Storage of instructions or retrieval of prestored instructions

H04N1/32422

Reprocessing messages, e.g. in case the intended destination is busy

H04N1/32427

Optimising routing, e.g. for minimum cost

H04N1/32432

in a particular memory file for retrieval by the user, e.g. in a facsimile mailbox

H04N1/32438

Informing the addressee of reception

H04N1/32443

with asynchronous operation of the image input and output devices connected to the memory

H04N1/32448

Controlling data flow to or from the memory in relation to the available memory capacity

H04N1/32454

Controlling data flow to or from the memory in relation to the amount of data, e.g. file size

H04N1/32459

for changing the arrangement of the stored data

H04N1/32464

Changing the arrangement of pages or documents, e.g. for producing pages to be bound

H04N1/3247

Changing the arrangement of data in a page, e.g. reversing the order to produce a mirror image

H04N1/32475

Changing the format of the data, e.g. parallel to serial or vice versa

H04N1/3248

Storage of at least a part of one of two image bearing sides of a single sheet, e.g. for two sided copying

H04N1/32486

Storage for making a plurality of copies or reproductions

H04N1/32491

alternate storage in and retrieval from two parallel memories, e.g. using ping-pong buffers

H04N1/32496

Changing the task performed, e.g. reading and transmitting, receiving and reproducing, copying facsimile mode changing H04N1/333

H04N1/32502

in systems having a plurality of input or output devices

H04N1/32507

a plurality of input devices

H04N1/32512

of different type, e.g. internal and external devices

H04N1/32518

details of interfacing

H04N1/32523

a plurality of output devices

H04N1/32529

of different type, e.g. internal and external devices

H04N1/32534

details of interfacing

H04N1/32539

Detecting or indicating the status of the output devices

H04N1/32545

Distributing a job or task among a plurality of input devices or a plurality of output devices

H04N1/3255

Hybrid jobs, i.e. performing different parts of the same job on different devices, e.g. colour and B/W pages on different devices

H04N1/32555

Large jobs, i.e. performing identical parts of the same job on different devices

H04N1/32561

using a programmed control device, e.g. a microprocessor

H04N1/32566

at the transmitter or at the receiver

H04N1/32571

Details of system components

H04N1/32577

Input interface

H04N1/32582

Output interface

H04N1/32587

Controller

H04N1/32593

Using a plurality of controllers, e.g. for controlling different interfaces

H04N1/32598

Bus based systems

H04N1/32603

Multi-bus systems

H04N1/32609

Fault detection or counter-measures, e.g. original mis-positioned, shortage of paper

H04N1/32614

related to a single-mode communication, e.g. at the transmitter or at the receiver

H04N1/32619

with retransmission retransmission after changing the mode H04N1/3333

H04N1/32625

Fault detection

H04N1/3263

of reading apparatus or transmitter, e.g. original jam

H04N1/32635

of reproducing apparatus or receiver, e.g. out of paper

H04N1/32641

of transmission or transmitted data, e.g. interruption or wrong number of pages

H04N1/32646

Counter-measures inhibiting an operation H04N1/00925, interrupting an operation H04N1/00915

H04N1/32651

Indicating or reporting details of user-machine interface H04N1/0035

H04N1/32657

locally

H04N1/32662

remotely, e.g. to the transmitter from the receiver

H04N1/32667

Restarting a communication or performing a recovery operation

H04N1/32673

Adjusting or controlling an operating mode, e.g. from paper reception to memory reception H04N1/32678 takes precedence; inhibiting an operation H04N1/00925

H04N1/32678

Performing substitution, e.g. substitute reception or substituting a corrupted line of data H04N1/32384 takes precedence

H04N1/32683

Preventive counter-measures, e.g. using redundant hardware, or anticipating a fault arrangements for keeping a communication line open H04N1/32795

H04N1/32689

Involving the use of error correction codes

H04N1/32694

Storing a fault condition in memory

H04N1/327

Initiating, continuing or ending a single-mode communication

Handshaking therefor

H04N1/32614 takes precedence

H04N1/32702

using digital control signals H04N1/32704, H04N1/32614, H04N1/32771 take precedence

H04N1/32704

Establishing a communication with one of a facsimile and another telecommunication apparatus sharing a single line

H04N1/32706

Type of the other apparatus

H04N1/32708

Telephone

H04N1/3271

Telephone answering machine

H04N1/32713

Data transmission device, e.g. switched network of teleprinters for the distribution of text-based information transceiver

H04N1/32715

Detecting

H04N1/32717

a calling tone, e.g. CI

H04N1/32719

a facsimile calling signal, e.g. CNG

H04N1/32721

facsimile protocol signals, e.g. DCS or TSI

H04N1/32723

speech signals

H04N1/32726

signals other than facsimile protocol signals, e.g. DTMF signals

H04N1/32728

an off-hook condition

H04N1/3273

a loop current

H04N1/32732

within a predetermined time

H04N1/32734

Maintaining the detecting operation after an apparatus has been connected to the line

H04N1/32736

a state or mode of the facsimile apparatus H04N1/32728 takes precedence

H04N1/32739

Generating signals

H04N1/32741

Generating ringing or calling signals or tones

H04N1/32743

Generating ring-back signals or tones

H04N1/32745

Generating messages, indications or warnings locally

H04N1/32747

Controlling the connection of the apparatus

H04N1/3275

Giving priority to one of the apparatus

H04N1/32752

Manual connection of one of the apparatus other than by putting a telephone off-hook

H04N1/32754

Automatically connecting another apparatus when a first one has finished

H04N1/32756

Inhibiting connection of another apparatus when a first one is connected

H04N1/32758

Sending a voice message other than from a telephone answering machine

H04N1/3276

Ring suppression

H04N1/32763

Supplying power to the apparatus

H04N1/32765

Initiating a communication

H04N1/32767

in response to a user operation, e.g. actuating a switch H04N1/32769 and H04N1/32771 take precedence

H04N1/32769

in response to detection of an original

H04N1/32771

in response to a request, e.g. for a particular document

H04N1/32773

to capture an image, e.g. at a location or event remote from the requester

H04N1/32776

using an interactive, user-operated device, e.g. a computer terminal, mobile telephone H04N1/32782, H04N1/32784 take precedence

H04N1/32778

using a mark-sheet or machine-readable code request

H04N1/3278

using a protocol or handshaking signal, e.g. non-standard set-up [NSS]

H04N1/32782

using a tone- or pulse-coded request

H04N1/32784

using a voice request

H04N1/32786

Ending a communication H04N1/32614 takes precedence

H04N1/32789

Details of handshaking H04N1/32793, H04N1/32795 and H04N1/32797 take precedence

H04N1/32791

Arrangements for reducing the handshaking procedure or protocol time

H04N1/32793

Controlling a receiver or transmitter non-communication function in response to a communication control signal

H04N1/32795

Arrangements for keeping the communication line open

H04N1/32797

Systems adapted to communicate over more than one channel, e.g. via ISDN changing transmission mode according to type of channel H04N2201/33364; multichannel or multilink communication protocols H04L69/14

H04N1/333

Mode signalling or mode changing

Handshaking therefor

H04N1/33307

prior to start of transmission, input or output of the picture signal only

H04N1/33315

reading or reproducing mode only, e.g. sheet size, resolution

H04N1/33323

transmission mode only, e.g. speed

H04N1/3333

during transmission, input or output of the picture signal; within a single document or page

H04N1/33338

adapting to particular facsimile group, e.g. G3

H04N1/33346

adapting to a particular standardised protocol

H04N1/33353

according to the available bandwidth used for a single communication, e.g. the number of ISDN channels used

H04N1/33361

according to characteristics or the state of the communication line H04N1/33353 and H04N2201/33371 take precedence

H04N1/33369

Storage of mode or retrieval of prestored mode

H04N1/33376

according to characteristics or state of one of the communicating parties, e.g. available memory capacity

H04N1/33384

according to transient characteristics or state

H04N1/33392

Details of handshaking

H04N1/34

for coin-freed systems

; Pay systems

H04N1/342

Accounting or charging based on content, e.g. charging for access to a particular document

H04N1/344

Accounting or charging based on type of function or service used, e.g. copying, faxing

H04N1/346

Accounting or charging based on a number representative of the service used, e.g. number of operations or copies produced

H04N1/348

Accounting or charging based on time or day

H04N1/36

for synchronising or phasing transmitter and receiver

H04N1/38

Circuits or arrangements for blanking or otherwise eliminating unwanted parts of pictures H04N1/387 takes precedence

H04N1/387

Composing, repositioning or otherwise

geometrically

modifying originals

H04N1/3871

the composed originals being of different kinds, e.g. low- and high-resolution originals

H04N1/3872

Repositioning or masking

H04N1/3873

defined only by a limited number of coordinate points or parameters, e.g. corners, centre; for trimming

H04N1/3875

combined with enlarging or reducing enlarging or reducing per se

H04N1/393

H04N1/3876

Recombination of partial images to recreate the original image

H04N1/3877

Image rotation

H04N1/3878

Skew detection or correction

H04N1/393

Enlarging or reducing

H04N1/3935

with modification of image resolution, i.e. determining the values of picture elements at new relative positions

H04N1/40

Picture signal circuits H04N1/387 takes precedence

H04N1/40006

Compensating for the effects of ageing, i.e. changes over time

H04N1/40012

Conversion of colour to monochrome

H04N1/40025

Circuits exciting or modulating particular heads for reproducing continuous tone value scales H04N1/401, H04N1/407 take precedence

H04N1/40031

for a plurality of reproducing elements simultaneously

H04N1/40037

the reproducing element being a laser

H04N1/40043

using more than one type of modulation, e.g. pulse width modulation and amplitude modulation

H04N1/4005

with regulating circuits, e.g. dependent upon ambient temperature or feedback control

H04N1/40056

Circuits for driving or energising particular reading heads or original illumination means H04N1/401, H04N1/407 take precedence

H04N1/40062

Discrimination between different image types, e.g. two-tone, continuous tone

H04N1/40068

Modification of image resolution, i.e. determining the values of picture elements at new relative positions H04N1/3935 takes precedence

H04N1/40075

Descreening, i.e. converting a halftone signal into a corresponding continuous-tone signal; Rescreening, i.e. combined descreening and halftoning

H04N1/40081

Soft dot halftoning, i.e. producing halftone dots with gradual edges

H04N1/40087

Multi-toning, i.e. converting a continuous-tone signal for reproduction with more than two discrete brightnesses or optical densities, e.g. dots of grey and black inks on white paper

H04N1/40093

Modification of content of picture, e.g. retouching geometric modifications H04N1/387

H04N1/401

Compensating positionally unequal response of the pick-up or reproducing head H04N1/403 takes precedence

H04N1/4015

of the reproducing head

H04N1/403

Discrimination between the two tones in the picture signal of a two-tone original

H04N1/405

Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels

H04N1/4051

producing a dispersed dots halftone pattern, the dots having substantially the same size different sizes H04N1/4057

H04N1/4052

by error diffusion, i.e. transferring the binarising error to neighbouring dot decisions

H04N1/4053

with threshold modulated relative to input image data or vice versa

H04N1/4055

producing a clustered dots or a size modulated halftone pattern

H04N1/4056

the pattern varying in one dimension only, e.g. dash length, pulse width modulation [PWM]

H04N1/4057

the pattern being a mixture of differently sized sub-patterns, e.g. spots having only a few different diameters multi-toning H04N1/40087

H04N1/4058

with details for producing a halftone screen at an oblique angle H04N1/4056 takes precedence

H04N1/407

Control or modification of tonal gradation or of extreme levels, e.g. background level

H04N1/4072

dependent on the contents of the original

H04N1/4074

using histograms

H04N1/4076

dependent on references outside the picture

H04N1/4078

using gradational references, e.g. grey-scale test pattern analysis

H04N1/409

Edge or detail enhancement

Noise or error suppression

H04N1/4092

Edge or detail enhancement

H04N1/4095

Correction of errors due to scanning a two-sided document, i.e. show-through correction

H04N1/4097

Removing errors due external factors, e.g. dust, scratches

H04N1/41

Bandwidth or redundancy reduction by scanning H04N1/17

; methods or arrangements for coding, decoding, compressing or decompressing digital video signals H04N19/00

H04N1/4105

for halftone screened pictures

H04N1/411

for the transmission

or storage

or reproduction of two-tone pictures, e.g. black and white pictures

H04N1/4115

involving the recognition of specific patterns, e.g. by symbol matching

H04N1/413

Systems or arrangements allowing the picture to be reproduced without loss or modification of picture-information

H04N1/4135

in which a baseband signal showing more than two values or a continuously varying baseband signal is transmitted or recorded

H04N1/415

in which the picture-elements are subdivided or grouped into fixed one-dimensional or two-dimensional blocks

H04N1/417

using predictive or differential encoding

H04N1/4172

Progressive encoding, i.e. by decomposition into high and low resolution components

H04N1/4175

involving the encoding of tone transitions with respect to tone transitions in a reference line

H04N1/4177

encoding document change data, e.g. form drop out data

H04N1/419

in which encoding of the length of a succession of picture-elements of the same value along a scanning line is the only encoding step

H04N1/4135 - H04N1/417 take precedence

H04N1/42

Systems for two-way working

, e.g. conference systems H04N1/32 takes precedence

H04N1/44

Secrecy systems

H04N1/4406

Restricting access, e.g. according to user identity mechanisms actuated y cards, PIN or the like in apparatus for dispensing G07F7/08

H04N1/4413

involving the use of passwords, ID codes or the like, e.g. PIN

H04N1/442

using a biometric data reading device

H04N1/4426

involving separate means, e.g. a server, a magnetic card

H04N1/4433

to an apparatus, part of an apparatus or an apparatus function

H04N1/444

to a particular document or image or part thereof

H04N1/4446

Hiding of documents or document information

H04N1/4453

Covering, i.e. concealing from above, or folding

H04N1/446

Enclosing, i.e. retaining in an enclosure, or locking up

H04N1/4466

Enveloping, wrapping, or sealing, i.e. keeping the document closed

H04N1/4473

Destruction, e.g. shredding of documents

H04N1/448

Rendering the image unintelligible, e.g. scrambling

H04N1/4486

using digital data encryption

H04N1/4493

Subsequently rendering the image intelligible using a co-operating image, mask or the like

H04N1/46

Colour picture communication systems

H04N1/465

Conversion of monochrome to colour

H04N1/48

Picture signal generators for halftone screening H04N1/52

H04N1/482

using the same detector device sequentially for different colour components

H04N1/484

with sequential colour illumination of the original

H04N1/486

with separate detectors, each detector being used for one specific colour component

H04N1/488

using beam-splitters

H04N1/50

Picture reproducers for halftone screening H04N1/52

H04N1/502

Reproducing the colour component signals dot-sequentially or simultaneously in a single or in adjacent picture-element positions

H04N1/504

Reproducing the colour component signals line-sequentially

H04N1/506

Reproducing the colour component signals picture-sequentially, e.g. with reproducing heads spaced apart from one another in the subscanning direction

H04N1/508

using the same reproducing head for two or more colour components

H04N1/52

Circuits or arrangements for halftone screening

H04N1/54

Conversion of colour picture signals to a plurality of signals some of which represent particular mixed colours, e.g. for textile printing

H04N1/56

Processing of colour picture signals H04N1/52 takes precedence

H04N1/58

Edge or detail enhancement

Noise or error suppression, e.g. colour misregistration correction H04N1/62 takes precedence

H04N1/60

Colour correction or control

H04N1/54 takes precedence

H04N1/6002

Corrections within particular colour systems

H04N1/6005

with luminance or chrominance signals, e.g. LC1C2, HSL or YUV

H04N1/6008

with primary colour signals, e.g. RGB or CMY(K)

H04N1/6011

with simulation on a subsidiary picture reproducer H04N1/622 takes precedence; matching two or more picture reproducers H04N1/6052

H04N1/6013

by simulating several colour corrected versions of the same image simultaneously on the same picture reproducer

H04N1/6016

Conversion to subtractive colour signals

H04N1/6019

using look-up tables H04N1/6025 takes precedence

H04N1/6022

Generating a fourth subtractive colour signal, e.g. under colour removal, black masking

H04N1/6025

using look-up tables

H04N1/6027

Correction or control of colour gradation or colour contrast H04N1/6058 takes precedence

H04N1/603

controlled by characteristics of the picture signal generator or the picture reproducer

H04N1/6033

using test pattern analysis H04N1/6055 takes precedence

H04N1/6036

involving periodic tests or tests during use of the machine

H04N1/6038

for controlling interaction among colorants

H04N1/6041

for controlling uniformity of color across image area

H04N1/6044

involving a sensor integrated in the machine or otherwise specifically adapted to read the test pattern

H04N1/6047

wherein the test pattern is part of an arbitrary user image

H04N1/605

for controlling ink amount, strike-through, bleeding soakage or the like

H04N1/6052

Matching two or more picture signal generators or two or more picture reproducers

H04N1/6055

using test pattern analysis

H04N1/6058

Reduction of colour to a range of reproducible colours, e.g. to ink- reproducible colour gamut

H04N1/6061

involving the consideration or construction of a gamut surface

H04N1/6063

dependent on the contents of the image to be reproduced

H04N1/6066

dependent on the gamut of the image to be reproduced

H04N1/6069

spatially varying within the image

H04N1/6072

adapting to different types of images, e.g. characters, graphs, black and white image portions

H04N1/6075

Corrections to the hue

H04N1/6077

Colour balance, e.g. colour cast correction

H04N1/608

within the L, C1, C2 colour signals

H04N1/6083

controlled by factors external to the apparatus

H04N1/6086

by scene illuminant, i.e. conditions at the time of picture capture, e.g. flash, optical filter used, evening, cloud, daylight, artificial lighting, white point measurement, colour temperature

H04N1/6088

by viewing conditions, i.e. conditions at picture output

H04N1/6091

by environmental factors, e.g. temperature or humidity H04N1/6086, H04N1/6088 take precedence

H04N1/6094

depending on characteristics of the input medium, e.g. film type, newspaper

H04N1/6097

depending on the characteristics of the output medium, e.g. glossy paper, matt paper, transparency or fabrics

H04N1/62

Retouching, i.e. modification of isolated colours only or in isolated picture areas only

H04N1/622

with simulation on a subsidiary picture reproducer

H04N1/624

Red-eye correction control of camera based on recognised facial parts H04N23/611

H04N1/626

Detection of non-electronic marks, e.g. fluorescent markers

H04N1/628

Memory colours, e.g. skin or sky

H04N1/64

Systems for the transmission or the storage of the colour picture signal

Details therefor, e.g. coding or decoding means therefor

H04N19/00 takes precedence

H04N1/642

Adapting to different types of images, e.g. characters, graphs, black and white image portions

H04N1/644

using a reduced set of representative colours, e.g. each representing a particular range in a colour space

H04N1/646

Transmitting or storing colour television type signals, e.g. PAL, Lab; Their conversion into additive or subtractive colour signals or vice versa therefor H04N1/642, H04N1/644 take precedence

H04N1/648

Transmitting or storing the primary (additive or subtractive) colour signals; Compression thereof H04N1/642 - H04N1/646 take precedence

H04N3/00

Scanning details of television systems

Combination thereof with generation of supply voltages

H04N3/02

by optical-mechanical means only H04N3/36 takes precedence

H04N3/04

having a moving aperture

also apertures covered by lenses

H04N3/06

having a moving lens or other refractor

H04N3/08

having a moving reflector

H04N3/09

for electromagnetic radiation in the invisible region, e.g. infra-red

H04N3/10

by means not exclusively optical-mechanical H04N3/36 takes precedence

H04N3/12

by switched stationary formation of lamps, photocells or light relays

H04N3/122

using cathode rays, e.g. multivision

H04N3/125

using gas discharges, e.g. plasma

H04N3/127

using liquid crystals

H04N3/14

by means of electrically scanned solid-state devices for picture generation H04N25/00

H04N3/15

for picture signal generation

This group is no longer used for classification of new documents as from December 1st, 2009. The backlog is continuously reclassified into group H04N25/00 and subgroups

H04N3/1506

with addressing of the image-sensor elements H04N3/1575 takes precedence

H04N3/1512

for MOS image-sensors, e.g. MOS-CCD H04N3/1581 takes precedence

H04N3/1518

using charge injection within the image-sensor

H04N3/1525

with charge transfer within the image-sensor, e.g. time delay and integration H04N3/1575 takes precedence

H04N3/1531

using frame-interline transfer

H04N3/1537

using interline transfer

H04N3/1543

using frame transfer

H04N3/155

Control of the image-sensor operation, e.g. image processing within the image-sensor

H04N3/1556

for variable integration time

H04N3/1562

for selective scanning, e.g. windowing, zooming

H04N3/1568

for disturbance correction or prevention within the image-sensor, e.g. biasing, blooming, smearing correction circuits H04N25/62

H04N3/1575

Picture signal readout register, e.g. shift registers, interline shift registers

H04N3/1581

using linear image-sensor time delay and integration H04N3/1525

H04N3/1587

the image being sequentially picked-up by one device at different imaging positions, e.g. by shifting the image-sensor

H04N3/1593

the image being simultaneously picked-up by more than one device, e.g. the scene being partitioned into subimages

H04N3/16

by deflecting electron beam in cathode-ray tube

, e.g. scanning corrections

H04N3/18

Generation of supply voltages, in combination with electron beam deflecting

H04N3/185

Maintaining dc voltage constant

H04N3/1853

using regulation in parallel

H04N3/1856

using regulation in series

H04N3/19

Arrangements or assemblies in supply circuits for the purpose of withstanding high voltages

H04N3/20

Prevention of damage to cathode-ray tubes in the event of failure of scanning

H04N3/22

Circuits for controlling dimensions, shape or centering of picture on screen

H04N3/223

Controlling dimensions by maintaining the cathode-ray tube high voltage constant H04N3/185

H04N3/227

Centering

H04N3/23

Distortion correction, e.g. for pincushion distortion correction, S-correction

H04N3/233

using active elements

H04N3/2335

with calculating means

H04N3/237

using passive elements, e.g. diodes

H04N3/24

Blanking circuits

H04N3/26

Modifications of scanning arrangements to improve focusing

H04N3/27

Circuits special to multi-standard receivers

H04N3/28

producing multiple scanning, i.e. using more than one spot at the same time

H04N3/30

otherwise than with constant velocity or otherwise than in pattern formed by unidirectional, straight, substantially horizontal or vertical lines

H04N3/32

Velocity varied in dependence upon picture information

H04N3/34

Elemental scanning area oscillated rapidly in direction transverse to main scanning direction

H04N3/36

Scanning of motion picture films, e.g. for telecine

H04N3/38

with continuously moving film

H04N3/40

with intermittently moving film

H04N3/405

with film moving only during the field blanking interval

H04N5/00

Details of television systems scanning details or combination thereof with generation of supply voltages H04N3/00

H04N5/04

Synchronising for television systems using pulse code modulation H04N7/56

H04N5/05

Synchronising circuits with arrangements for extending range of synchronisation, e.g. by using switching between several time constants

H04N5/06

Generation of synchronising signals

H04N5/067

Arrangements or circuits at the transmitter end

H04N5/0675

for mixing the synchronising signals with the picture signal or mutually electrical gates H03K17/00

H04N5/073

for mutually locking plural sources of synchronising signals, e.g. studios or relay stations

H04N5/0733

for distributing synchronisation pulses to different TV cameras

H04N5/0736

using digital storage buffer techniques

H04N5/08

Separation of synchronising signals from picture signals

H04N5/10

Separation of line synchronising signal from frame synchronising signal

or vice versa

H04N5/12

Devices in which the synchronising signals are only operative if a phase difference occurs between synchronising and synchronised scanning devices, e.g. flywheel synchronising

H04N5/123

whereby the synchronisation signal directly commands a frequency generator

H04N5/126

whereby the synchronisation signal indirectly commands a frequency generator

H04N5/14

Picture signal circuitry for video frequency region cameras or camera modules comprising electronic image sensors, or control thereof H04N23/00

H04N5/141

Beam current control means

H04N5/142

Edging; Contouring

H04N5/144

Movement detection for video coding H04N19/503; analysis of motion in general G06T7/20

H04N5/145

Movement estimation for video coding H04N19/51

H04N5/147

Scene change detection

H04N5/148

Video amplifiers amplifiers in general H03F

H04N5/16

Circuitry for reinsertion of dc and slowly varying components of signal

Circuitry for preservation of black or white level

H04N5/165

to maintain the black level constant

H04N5/18

by means of "clamp" circuit operated by switching circuit

H04N5/185

for the black level

H04N5/20

Circuitry for controlling amplitude response

H04N5/202

Gamma control circuits for controlling camera response irrespective of the scene brightness H04N23/82

Group H04N5/202 is impacted by reclassification into group H04N23/82.
Groups H04N5/202 and H04N23/82 should be considered in order to perform a complete search.

H04N5/205

for correcting amplitude versus frequency characteristic

H04N5/208

for compensating for attenuation of high frequency components, e.g. crispening, aperture distortion correction

H04N5/21

Circuitry for suppressing or minimising disturbance, e.g. moiré or halo

H04N5/211

Ghost signal cancellation H04N23/81 takes precedence

H04N5/213

Circuitry for suppressing or minimising impulsive noise for suppressing or minimising disturbance in image signal generation H04N23/81

H04N5/222

Studio circuitry

Studio devices

Studio equipment cameras or camera modules comprising electronic image sensors, or control thereof H04N23/00

H04N5/2222

Prompting

H04N5/2224

related to virtual studio applications

H04N5/2226

Determination of depth image, e.g. for foreground/background separation determining depth by image analysis in general G06T7/50; segmentation by image analysis in general G06T7/10

H04N5/2228

Video assist systems used in motion picture production, e.g. video cameras connected to viewfinders of motion picture cameras or related video signal processing

H04N5/253

Picture signal generating by scanning motion picture films or slide opaques, e.g. for telecine scanning details therefor H04N3/36

; standard conversion therefor H04N7/0112

H04N5/257

Picture signal generators using flying-spot scanners H04N5/253 takes precedence

H04N5/262

Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects

; Cameras specially adapted for the electronic generation of special effects

H04N5/2621

Cameras specially adapted for the electronic generation of special effects during image pickup, e.g. digital cameras, camcorders, video cameras having integrated special effects capability

H04N5/2622

Signal amplitude transition in the zone between image portions, e.g. soft edges

H04N5/2624

for obtaining an image which is composed of whole input images, e.g. splitscreen

H04N5/2625

for obtaining an image which is composed of images from a temporal image sequence, e.g. for a stroboscopic effect sequence generated by event triggered capturing H04N7/188

H04N5/2627

for providing spin image effect, 3D stop motion effect or temporal freeze effect 2D image animation in general G06T13/80

H04N5/2628

Alteration of picture size, shape, position or orientation, e.g. zooming, rotation, rolling, perspective, translation

H04N5/265

Mixing

H04N5/268

Signal distribution or switching

H04N5/272

Means for inserting a foreground image in a background image, i.e. inlay, outlay

H04N5/2723

Insertion of virtual advertisement; Replacing advertisements physical present in the scene by virtual advertisement data processing systems or methods specially adapted for marketing G06Q30/02

H04N2005/2726

for simulating a person's appearance, e.g. hair style, glasses, clothes

H04N5/275

Generation of keying signals

H04N5/278

Subtitling

H04N5/28

Mobile studios

H04N5/30

Transforming light or analogous information into electric information scanning details H04N3/00; cameras or camera modules comprising electronic image sensors, or control thereof H04N23/00; circuitry of solid-state image sensors [SSIS] or control thereof H04N25/00

Group H04N5/30 is impacted by reclassification into group H04N25/00.
Groups H04N5/30 and H04N25/00 should be considered in order to perform a complete search.

H04N5/32

Transforming X-rays cameras or camera modules for generating image signals from X-rays H04N23/30; circuitry of SSIS for transforming X-rays into image signals H04N25/30

Group H04N5/32 is impacted by reclassification into groups H04N23/30 and H04N25/30.
Groups H04N5/32, H04N23/30 and H04N25/30 should be considered in order to perform a complete search.

H04N5/3205

using subtraction imaging techniques

H04N5/321

with video transmission of fluoroscopic images

Not complete, for documents published prior to June 1996 see also H04N5/32

H04N5/325

Image enhancement, e.g. by subtraction techniques using polyenergetic X-rays

Not complete, for documents published prior to June 1996 see also H04N5/32

H04N5/33

Transforming infrared radiation cameras or camera modules for generating image signals from infrared radiation H04N23/20; circuitry of SSIS for transforming infrared radiation into image signals H04N25/20

Group H04N5/33 is impacted by reclassification into groups H04N23/20, H04N23/21, H04N23/23, H04N25/20 and H04N25/21.
All groups listed in this Warning should be considered in order to perform a complete search.

H04N5/38

Transmitter circuitry

for the transmission of television signals according to analogue transmission standards

H04N5/14 takes precedence

H04N5/40

Modulation circuits

H04N5/42

for transmitting at will black-and-white or colour signals

H04N5/44

Receiver circuitry

for the reception of television signals according to analogue transmission standards

H04N5/14 takes precedence

H04N5/4446

IF amplifier circuits specially adapted for B&W TV RF amplifiers in general H03F3/189

H04N5/4448

for frame-grabbing

H04N5/445

for displaying additional information H04N5/50 takes precedence

H04N5/44504

Circuit details of the additional information generator, e.g. details of the character or graphics signal generator, overlay mixing circuits

H04N5/45

Picture in picture

, e.g. displaying simultaneously another television channel in a region of the screen

H04N5/455

Demodulation-circuits

H04N5/46

for receiving on more than one standard at will deflecting circuits of multi-standard receivers H04N3/27

H04N5/50

Tuning indicators

Automatic tuning control

H04N5/505

Invisible or silent tuning

H04N5/52

Automatic gain control

H04N5/53

Keyed automatic gain control

H04N5/54

for positively-modulated picture signals H04N5/53 takes precedence

H04N5/56

for negatively-modulated picture signals H04N5/53 takes precedence

H04N5/57

Control of contrast or brightness

H04N5/58

in dependence upon ambient light

H04N5/59

in dependence upon beam current of cathode ray tube

H04N5/60

for the sound signals

H04N5/602

for digital sound signals

H04N5/605

according to the NICAM system

H04N5/607

for more than one sound signal, e.g. stereo, multilanguages H04N5/602 takes precedence

H04N5/62

Intercarrier circuits, i.e. heterodyning sound and vision carriers

H04N5/607 takes precedence

H04N5/63

Generation or supply of power specially adapted for television receivers

H04N5/64

Constructional details of receivers, e.g. cabinets or dust covers furniture aspects

of television cabinets

A47B81/06

H04N5/642

Disposition of sound reproducers

H04N5/645

Mounting of picture tube on chassis or in housing

H04N5/65

Holding-devices for protective discs or for picture masks

H04N5/655

Construction or mounting of chassis, e.g. for varying the elevation of the tube

H04N5/66

Transforming electric information into light information scanning details H04N3/00

H04N5/68

Circuit details for cathode-ray display tubes

deviation circuits H04N3/16

H04N5/70

Circuit details for electroluminescent devices

H04N5/72

Modifying the appearance of television pictures by optical filters or diffusing screens

H04N5/74

Projection arrangements for image reproduction, e.g. using eidophor

H04N5/74 and subgroups are no longer used for the classification of new documents as from 2008-10-01. The backlog is being continuously reclassified to subgroups of H04N9/31

H04N5/7408

Direct viewing projectors, e.g. an image displayed on a video CRT or LCD display being projected on a screen

H04N5/7416

involving the use of a spatial light modulator, e.g. a light valve, controlled by a video signal

H04N5/7425

the modulator being a dielectric deformable layer controlled by an electron beam, e.g. eidophor projector

H04N2005/7433

Control circuits therefor

H04N5/7441

the modulator being an array of liquid crystal cells

H04N2005/745

Control circuits therefor

H04N5/7458

the modulator being an array of deformable mirrors, e.g. digital micromirror device [DMD]

H04N2005/7466

Control circuits therefor

H04N5/7475

Constructional details of television projection apparatus

H04N2005/7483

for colour television

H04N5/7491

of head mounted projectors

H04N5/76

Television signal recording

H04N5/7605

on discs or drums H04N5/781, H04N5/805, H04N5/83, H04N5/85 take precedence

H04N5/765

Interface circuits between an apparatus for recording and another apparatus

H04N5/77

between a recording apparatus and a television camera

H04N5/772

the recording apparatus and the television camera being placed in the same enclosure

H04N5/775

between a recording apparatus and a television receiver

H04N5/7755

the recorder being connected to, or coupled with, the antenna of the television receiver

H04N5/78

using magnetic recording H04N5/91 takes precedence

; mechanical details in so far as non typical for television circuitry G11B5/00

H04N5/7805

Recording or playback not using inductive heads, e.g. magneto-optical, thermomagnetic, magnetostrictive, galvanomagnetic electrostatic recording H04N5/80, photographic recording H04N5/84

H04N5/781

on disks or drums

H04N5/782

on tape

H04N5/78206

Recording using a special track configuration, e.g. crossing, overlapping

H04N5/78213

involving recording in different depths of the magnetic tape

H04N5/7822

with stationary magnetic heads

H04N5/7824

with rotating magnetic heads

H04N5/7826

involving helical scanning of the magnetic tape

H04N5/78263

for recording on tracks inclined relative to the direction of movement of the tape

H04N5/78266

using more than one track for the recording of one television field or frame, i.e. segmented recording

H04N5/7828

involving transversal scanning of the magnetic tape

H04N5/783

Adaptations for reproducing at a rate different from the recording rate

H04N5/784

on a sheet

H04N5/80

using electrostatic recording H04N5/91 takes precedence

H04N5/805

on discs or drums

H04N5/82

using deformable thermoplastic recording medium

H04N5/83

on disks or drums

H04N5/84

using optical recording H04N5/80, H04N5/89, H04N5/91 take precedence

H04N5/843

on film

H04N5/846

the film moving intermittently

H04N5/85

on discs or drums

H04N5/87

Producing a motion picture film from a television signal

standard conversion therefor H04N7/0112

H04N5/89

using holographic recording H04N5/91 takes precedence

H04N5/90

on discs or drums

H04N5/903

using variable electrical capacitive recording H04N5/91 takes precedence

H04N5/907

using static stores, e.g. storage tubes or semiconductor memories H04N5/91 takes precedence

H04N5/91

Television signal processing therefor

H04N5/911

for the suppression of noise

H04N5/932 takes precedence

H04N5/913

for scrambling

; for copy protection

H04N2005/91307

by adding a copy protection signal to the video signal

H04N2005/91314

the copy protection signal being a pulse signal inserted in blanking intervals of the video signal, e.g. pseudo-AGC pulses, pseudo-sync pulses

H04N2005/91321

the copy protection signal being a copy protection control signal, e.g. a record inhibit signal

H04N2005/91328

the copy protection signal being a copy management signal, e.g. a copy generation management signal [CGMS]

H04N2005/91335

the copy protection signal being a watermark

H04N2005/91342

the copy protection signal being an authentication signal

H04N2005/9135

by superimposing the spectrally spread copy protection signal onto the video signal

H04N2005/91357

by modifying the video signal

H04N2005/91364

the video signal being scrambled

H04N2005/91371

the video color burst signal being modified

H04N2005/91378

the video line number being modulated

H04N2005/91385

the video frame number being modulated

H04N2005/91392

using means for preventing making copies of projected video images

H04N5/915

for field- or frame-skip recording or reproducing

H04N5/9155

with sound multiplexing

H04N5/917

for bandwidth reduction

H04N5/919

by dividing samples or signal segments, e.g. television lines, among a plurality of recording channels

H04N5/92

Transformation of the television signal for recording, e.g. modulation, frequency changing

Inverse transformation for playback

H04N5/9201

involving the multiplexing of an additional signal and the video signal

H04N5/9202

the additional signal being a sound signal H04N5/9155, H04N5/92 take precedence

H04N5/9203

using time division multiplex

H04N5/9204

using frequency division multiplex

H04N5/9205

the additional signal being at least another television signal

H04N5/9206

the additional signal being a character code signal

H04N5/9207

for teletext

H04N5/9208

involving the use of subcodes

H04N5/921

by recording or reproducing the baseband signal

H04N5/923

using preemphasis of the signal before modulation and deemphasis of the signal after demodulation

volume compression or expansion in amplifiers in general H03G7/00

H04N5/926

by pulse code modulation H04N5/919 takes precedence

H04N5/9261

involving data reduction

H04N5/9262

using predictive coding

H04N5/9264

using transform coding

H04N5/9265

with processing of the sound signal

H04N5/9267

using time division multiplex of the PCM audio and PCM video signals

H04N5/9268

with insertion of the PCM audio signals in the vertical blanking interval of the PCM video signal

H04N5/928

the sound signal being pulse code modulated and recorded in time division multiplex with the modulated video signal

H04N5/93

Regeneration of the television signal or of selected parts thereof

H04N5/9305

involving the mixing of the reproduced video signal with a non-recorded signal, e.g. a text signal

H04N5/931

for restoring the level of the reproduced signal

H04N5/9315

the level control being frequency dependent H04N5/923 takes precedence

H04N5/932

Regeneration of analogue synchronisation signals

H04N5/935

Regeneration of digital synchronisation signals

H04N5/937

by assembling picture element blocks in an intermediate store

H04N5/94

Signal drop-out compensation

H04N5/945

for signals recorded by pulse code modulation

H04N5/95

Time-base error compensation

H04N5/932 takes precedence

H04N5/953

by using an analogue memory, e.g. a CCD shift register, the delay of which is controlled by a voltage controlled oscillator

H04N5/956

by using a digital memory with independent write-in and read-out clock generators

H04N7/00

Television systems details H04N3/00, H04N5/00; methods or arrangements, for coding, decoding, compressing or decompressing digital video signals H04N19/00; selective content distribution H04N21/00

H04N7/002

Special television systems not provided for by H04N7/007 - H04N7/18 still pictures via a television channel H04N1/00098

H04N7/005

using at least one opto-electrical conversion device

H04N7/007

Systems with supplementary picture signal insertion during a portion of the active part of a television signal, e.g. during top and bottom lines in a HDTV letter-box system

H04N7/01

Conversion of standards

, e.g. involving analogue television standards or digital television standards processed at pixel level

H04N7/0102

involving the resampling of the incoming video signal

H04N7/0105

using a storage device with different write and read speed

H04N7/0107

using beam gun storage

H04N7/011

using magnetic recording

H04N7/0112

one of the standards corresponding to a cinematograph film standard

H04N7/0115

with details on the detection of a particular field or frame pattern in the incoming video signal, e.g. 3:2 pull-down pattern

H04N7/0117

involving conversion of the spatial resolution of the incoming video signal for graphics images G09G2340/0407

H04N7/012

Conversion between an interlaced and a progressive signal for graphics images G09G2310/0229

H04N7/0122

the input and the output signals having different aspect ratios

H04N7/0125

one of the standards being a high definition standard

H04N7/0127

by changing the field or frame frequency of the incoming video signal, e.g. frame rate converter

H04N7/013

the incoming video signal comprising different parts having originally different frame rate, e.g. video and graphics

H04N7/0132

the field or frame frequency of the incoming video signal being multiplied by a positive integer, e.g. for flicker reduction

H04N7/0135

involving interpolation processes interpolation-based image scaling G06T3/4007; interpolation for video coding H04N19/587, H04N19/59

H04N7/0137

dependent on presence/absence of motion, e.g. of motion zones H04N7/014 takes precedence; movement detection in television signals H04N5/144

H04N7/014

involving the use of motion vectors motion estimation and compensation in video coding H04N19/51

H04N7/0142

the interpolation being edge adaptive edge detection in television signals H04N5/142; edge-driven scaling G06T3/403

H04N7/0145

the interpolation being class adaptive, i.e. it uses the information of class which is determined for a pixel based upon certain characteristics of the neighbouring pixels

H04N7/0147

the interpolation using an indication of film mode or an indication of a specific pattern, e.g. 3:2 pull-down pattern

H04N7/015

High-definition television systems

H04N7/0152

using spatial or temporal subsampling

H04N7/0155

using pixel blocks

H04N7/0157

with motion estimation, e.g. involving the use of motion vectors

H04N7/025

Systems for the transmission of digital non-picture data, e.g. of text during the active part of a television frame

transmission of digital non-picture data during the vertical blanking interval only H04N7/088

H04N7/0255

Display systems therefor

H04N7/03

Subscription systems therefor

H04N7/035

Circuits for the digital non-picture data signal, e.g. for slicing of the data signal, for regeneration of the data-clock signal, for error detection or correction of the data signal

H04N7/0352

for regeneration of the clock signal

H04N7/0355

for discrimination of the binary level of the digital data, e.g. amplitude slicers

H04N7/0357

for error detection or correction

H04N7/04

Systems for the transmission of one television signal, i.e. both picture and sound, by a single carrier

H04N7/084, H04N7/087 take precedence

H04N7/045

the carrier being frequency modulated

H04N7/06

Systems for the simultaneous transmission of one television signal, i.e. both picture and sound, by more than one carrier

H04N7/084, H04N7/087 take precedence

H04N7/063

Simultaneous transmission of separate parts of one picture

H04N7/066

the carriers being allocated to more than one television channel

H04N7/08

Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band

, e.g. by time division H04N7/007 takes precedence

H04N7/0803

using frequency interleaving, e.g. with precision offset

H04N7/0806

the signals being two or more video signals H04N7/0803, H04N7/081 take precedence

H04N7/081

the additional information signals being transmitted by means of a subcarrier

H04N7/083

with signal insertion during the vertical and the horizontal blanking interval

, e.g. MAC data signals

H04N7/084

with signal insertion during the horizontal blanking interval

only

H04N7/085

the inserted signal being digital

H04N7/0855

the signal being time-compressed before its insertion and subsequently decompressed at reception

H04N7/087

with signal insertion during the vertical blanking interval

only

H04N7/088

the inserted signal being digital

H04N7/0881

the signal being time-compressed before its insertion and subsequently decompressed at reception

H04N7/0882

for the transmission of character code signals, e.g. for teletext circuits for the digital non-picture data signal H04N7/035

H04N7/0884

for the transmission of additional display-information, e.g. menu for programme or channel selection

H04N7/0885

for the transmission of subtitles

H04N7/0887

for the transmission of programme or channel identifying signals

H04N7/0888

Subscription systems therefor

H04N7/10

Adaptations for transmission by electrical cable H04N7/12 takes precedence

H04N7/102

Circuits therefor, e.g. noise reducers, equalisers, amplifiers H04N7/108 takes precedence

H04N7/104

Switchers or splitters

H04N7/106

for domestic distribution

H04N7/108

the cable being constituted by a pair of wires

H04N7/12

Systems in which the television signal is transmitted via one channel or a plurality of parallel channels, the bandwidth of each channel being less than the bandwidth of the television signal H04N7/24 takes precedence

H04N7/122

involving expansion and subsequent compression of a signal segment, e.g. a frame, a line

H04N7/125

the signal segment being a picture element

H04N7/127

Systems in which different parts of the picture signal frequency band are individually processed, e.g. suppressed, transposed

H04N7/14

Systems for two-way working

H04N7/12,

H04N7/173 take precedence

H04N7/141

between two video terminals, e.g. videophone telephonic communication systems combined with television receiver for reception of entertainment or information matter H04M11/085

H04N7/142

Constructional details of the terminal equipment, e.g. arrangements of the camera and the display

H04N7/144

camera and display on the same optical axis, e.g. optically multiplexing the camera and display for eye to eye contact

H04N2007/145

Handheld terminals

H04N7/147

Communication arrangements, e.g. identifying the communication as a video-communication, intermediate storage of the signals selecting H04Q

H04N7/148

Interfacing a video terminal to a particular transmission medium, e.g. ISDN

H04N7/15

Conference systems

H04N7/152

Multipoint control units therefor

H04N7/155

involving storage of or access to video conference sessions tracking arrangements for later retrieval of a computer conference content or participants activities H04L12/1831

H04N7/157

defining a virtual conference space and using avatars or agents computer conference optimisation or adaptation H04L12/1827

H04N7/16

Analogue secrecy systems

Analogue subscription systems

H04N7/161

Constructional details of the subscriber equipment H04N7/164 takes precedence

H04N7/162

Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing

H04N7/163

by receiver means only

H04N7/164

Coin-freed apparatus

H04N7/165

Centralised control of user terminal subsequent to an upstream request signal H04N7/17345; Registering at central by two-way working H04N7/17309

H04N7/166

Passage/non-passage of the television signal, e.g. jamming, band suppression scrambling and descrambling H04N7/167

H04N7/167

Systems rendering the television signal unintelligible and subsequently intelligible

H04N7/1675

Providing digital key or authorisation information for generation or regeneration of the scrambling sequence pseudo-random number generators in general G06F7/58

H04N7/169

Systems operating in the time domain of the television signal

H04N7/1693

by displacing synchronisation signals relative to active picture signals or vice versa

H04N7/1696

by changing or reversing the order of active picture signal portions

H04N7/171

Systems operating in the amplitude domain of the television signal

H04N7/1713

by modifying synchronisation signals

H04N7/1716

by inverting the polarity of active picture signal portions

H04N7/173

with two-way working, e.g. subscriber sending a programme selection signal

H04N7/17309

Transmission or handling of upstream communications

H04N7/17318

Direct or substantially direct transmission and handling of requests

H04N7/17327

with deferred transmission or handling of upstream communications

H04N7/17336

Handling of requests in head-ends

H04N7/17345

Control of the passage of the selected programme

H04N7/17354

in an intermediate station common to a plurality of user terminals

H04N7/17363

at or near the user terminal

H04N2007/17372

the upstream transmission being initiated or timed by a signal from upstream of the user terminal

H04N2007/17381

the upstream transmission being initiated by the user terminal

H04N2007/1739

the upstream communication being transmitted via a separate link, e.g. telephone line

H04N7/18

Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast

H04N7/181

for receiving images from a plurality of remote sources

H04N7/183

for receiving images from a single remote source

H04N7/185

from a mobile camera, e.g. for remote control

H04N7/186

Video door telephones

H04N7/188

Capturing isolated or intermittent images triggered by the occurrence of a predetermined event, e.g. an object reaching a predetermined position signal generation from motion picture films H04N5/253

H04N7/20

Adaptations for transmission via a GHz frequency band, e.g. via satellite

H04N7/22

Adaptations for optical transmission

H04N7/24

Systems for the transmission of television signals using pulse code modulation H04N21/00 takes precedence

H04N2007/243

Bitstream control arrangements

H04N2007/246

Bitstream transport arrangements

H04N7/52

Systems for transmission of a pulse code modulated video signal with one or more other pulse code modulated signals, e.g. an audio signal or a synchronizing signal assembling of a multiplex stream by combining a video stream with other content or additional data, remultiplexing of multiplex streams, insertion of stuffing bits into the multiplex stream, assembling of a packetised elementary stream at server side H04N21/236; disassembling of a multiplex stream, remultiplexing of multiplex streams, extraction or processing of Service Information, disassembling of packetised elementary stream at client side H04N21/434

H04N7/54

the signals being synchronous

H04N21/23602, H04N21/23614, H04N21/2365, H04N21/2368, H04N21/4341, H04N21/4342, H04N21/4347, H04N21/4348 take precedence

H04N7/56

Synchronising systems therefor

H04N9/00

Details of colour television systems

H04N9/01

Circuitry for demodulating colour component signals modulated spatially by colour striped filters by phase separation

H04N9/03

Circuitry for demodulating colour component signals modulated spatially by colour striped filters by frequency separation

H04N9/11

Scanning of colour motion picture films, e.g. for telecine

H04N9/12

Picture reproducers H04N9/11 takes precedence

H04N9/14

using optical-mechanical scanning means only

H04N9/16

using cathode ray tubes H04N9/11 takes precedence

H04N9/18

using separate electron beams for the primary colour signals H04N9/27 takes precedence

This subgroup is no longer used for the classification of new documents as from 1.02.2012 and the backlog of this subgroup is being continuously reclassified to H04L9/065 and subgroups

H04N9/20

with more than one beam in a tube

H04N9/22

using the same beam for more than one primary colour information H04N9/27 takes precedence

H04N9/24

using means, integral with, or external to, the tube, for producing signal indicating instantaneous beam position

H04N9/26

using electron-optical colour selection means, e.g. line grid, deflection means in or near the gun or near the phosphor screen

H04N9/27

with variable depth of penetration of electron beam into the luminescent layer, e.g. penetrons

H04N9/28

Arrangements for convergence or focusing

H04N9/285

using quadrupole lenses

H04N9/29

using demagnetisation or compensation of external magnetic fields

H04N9/30

using solid-state colour display devices

H04N9/31

Projection devices for colour picture display

, e.g. using electronic spatial light modulators [ESLM]

H04N9/3102

using two-dimensional electronic spatial light modulators micromechanical modulators as such G02B26/0833; liquid crystal modulators as such G02F1/13

H04N9/3105

for displaying all colours simultaneously, e.g. by using two or more electronic spatial light modulators simultaneous projection in colour photography G03B33/10; beam splitting or combining systems per se

G02B27/10

H04N9/3108

by using a single electronic spatial light modulator

H04N9/3111

for displaying the colours sequentially, e.g. by using sequentially activated light sources sequential projection in colour photography G03B33/08

H04N9/3114

by using a sequential colour filter producing one colour at a time

H04N9/3117

by using a sequential colour filter producing two or more colours simultaneously, e.g. by creating scrolling colour bands

H04N9/312

Driving therefor driving of electronic spatial light modulators in displays other than projection devices G09G3/34, G09G3/36; control of liquid crystal elements G02F1/133; control of micromechanical modulators G02B26/08

H04N9/3123

using pulse width modulation

H04N9/3126

for spatial light modulators in series

H04N9/3129

scanning a light beam on the display screen scanning a light beam on a screen in displays other than projection devices G09G3/02; scanning systems in general G02B26/10; projectors using laser light sources in general H04N9/3161

H04N9/3132

using one-dimensional electronic spatial light modulators

H04N9/3135

Driving therefor

H04N9/3138

using arrays of modulated light sources electroluminescent display devices G09G3/30

H04N9/3141

Constructional details thereof details not peculiar to the presence of an electronic spatial light modulator G03B21/14

H04N9/3144

Cooling systems cooling of liquid crystal cells in general G02F1/133382; cooling of projectors not peculiar to the presence of an electronic spatial light modulator G03B21/16

H04N9/3147

Multi-projection systems displays in general H04N9/12; video walls G06F3/1446, G09G2300/026

H04N9/315

Modulator illumination systems general applications of lighting devices F21V; general optical systems G02B; lamp houses for projectors not peculiar to the presence of an electronic spatial light modulator G03B21/20

H04N9/3152

for shaping the light beam beam shaping per se

G02B27/09

H04N9/3155

for controlling the light source light source control per se H05B35/00 – H05B47/00; control of an illumination source for displays in general G09G3/3406

H04N9/3158

for controlling the spectrum

H04N9/3161

using laser light sources using laser beams scanning the display screen H04N9/3129

H04N9/3164

using multiple light sources

H04N9/3167

for polarizing the light beam polarizing optical systems per se

G02B27/28

H04N9/317

Convergence or focusing systems electronic adjustment of convergence H04N9/3185; convergence or focusing arrangements for cathode ray tubes H04N9/28; means for automatic focusing of projectors not peculiar to the presence of an electronic spatial light modulator G03B21/53

H04N9/3173

wherein the projection device is specially adapted for enhanced portability

H04N9/3176

wherein the projection device is incorporated in a camera details of cameras adapted for combination with a projector not peculiar to the presence of an electronic spatial light modulator G03B17/54

H04N9/3179

Video signal processing therefor

H04N9/3182

Colour adjustment, e.g. white balance, shading or gamut white balance per se H04N9/73; control of amplitude of colour signals H04N9/68; colour control circuits for displays in general G09G5/02, G09G3/2003, G09G3/3607

H04N9/3185

Geometric adjustment, e.g. keystone or convergence optical or mechanical adjustment of convergence H04N9/317; using scanning means H04N3/22; optical or mechanical adjustments of projectors not peculiar to the presence of an electronic spatial light modulator G03B21/14

H04N9/3188

Scale or resolution adjustment scaling in general G06T3/40; resolution modifying circuits for displays in general G09G5/391

H04N9/3191

Testing thereof testing of displays in general G09G3/006

H04N9/3194

including sensor feedback

H04N9/3197

using light modulating optical valves

H04N9/43

Conversion of monochrome picture signals to colour picture signals for colour picture display

H04N9/44

Colour synchronisation

H04N9/45

Generation or recovery of colour sub-carriers

H04N9/455

Generation of colour burst signals

Insertion of colour burst signals in colour picture signals or separation of colour burst signals from colour picture signals H04N9/45 takes precedence

H04N9/465

Synchronisation of the PAL-switch

H04N9/47

for sequential signals

H04N9/475

for mutually locking different synchronisation sources

H04N9/64

Circuits for processing colour signals H04N9/77 takes precedence; camera processing pipelines for processing colour signals H04N23/84

Group H04N9/64 is impacted by reclassification into group H04N23/84.
Groups H04N9/64 and H04N23/84 should be considered in order to perform a complete search.

H04N9/641

Multi-purpose receivers, e.g. for auxiliary information H04N9/642 takes precedence

H04N9/642

Multi-standard receivers

H04N9/643

Hue control means, e.g. flesh tone control

H04N9/645

Beam current control means

H04N9/646

for image enhancement, e.g. vertical detail restoration, cross-colour elimination, contour correction, chrominance trapping filters

H04N9/647

I.F amplifiers, amplifiers in general H03F

H04N9/648

Video amplifiers

H04N9/65

for synchronous modulators

H04N9/66

for synchronous demodulators

H04N9/67

for matrixing camera processing pipelines for matrixing of colour signals H04N23/85

Group H04N9/67 is impacted by reclassification into group H04N23/85.
Groups H04N9/67 and H04N23/85 should be considered in order to perform a complete search.

H04N9/68

for controlling the amplitude of colour signals, e.g. automatic chroma control circuits H04N9/71, H04N9/73 take precedence; camera processing pipelines for controlling the colour saturation of colour signals H04N23/86

Group H04N9/68 is impacted by reclassification into group H04N23/86.
Groups H04N9/68 and H04N23/86 should be considered in order to perform a complete search.

H04N9/69

for modifying the colour signals by gamma correction controlling camera response for colour signals H04N23/83

Group H04N9/69 is impacted by reclassification into group H04N23/83.
Groups H04N9/69 and H04N23/83 should be considered in order to perform a complete search.

H04N9/70

for colour killing

H04N9/71

combined with colour gain control

H04N9/72

for reinsertion of DC and slowly varying components of colour signals camera processing pipelines for reinsertion of DC or slowly varying components of colour signals H04N23/87

Group H04N9/72 is impacted by reclassification into group H04N23/87.
Groups H04N9/72 and H04N23/87 should be considered in order to perform a complete search.

H04N9/73

Colour balance circuits, e.g. white balance circuits or colour temperature control camera processing pipelines for colour balance H04N23/88

Group H04N9/73 is impacted by reclassification into group H04N23/88.
Groups H04N9/73 and H04N23/88 should be considered in order to perform a complete search.

H04N9/74

for obtaining special effects H04N9/65 - H04N9/73 take precedence

H04N9/75

Chroma key

H04N9/76

for mixing of colour signals H04N9/75 takes precedence

H04N9/77

Circuits for processing the brightness signal and the chrominance signal relative to each other, e.g. adjusting the phase of the brightness signal relative to the colour signal, correcting differential gain or differential phase circuits for matrixing H04N9/67

H04N9/78

for separating the brightness signal or the chrominance signal from the colour television signal, e.g. using comb filter

H04N9/79

Processing of colour television signals in connection with recording

H04N9/7904

using intermediate digital signal processing

H04N9/7908

Suppression of interfering signals at the reproducing side, e.g. noise

H04N9/7912

the interfering signals being intermodulation signals

H04N9/7917

the interfering signals being cross-talk signals

H04N9/7921

for more than one processing mode

H04N9/7925

for more than one standard

H04N9/793

for controlling the level of the chrominance signal, e.g. by means of automatic chroma control circuits

H04N9/7933

the level control being frequency-dependent

H04N9/7936

by using a preemphasis network at the recording side and a deemphasis network at the reproducing side

H04N9/797

for recording the signal in a plurality of channels, the bandwidth of each channel being less than the bandwidth of the signal H04N9/804, H04N9/81, H04N9/82 take precedence

H04N9/7973

by dividing the luminance or colour component signal samples or frequency bands among a plurality of recording channels H04N9/804, H04N9/825 take precedence

H04N9/7976

by spectrum folding of the high frequency components of the luminance signal

H04N9/80

Transformation of the television signal for recording, e.g. modulation, frequency changing

Inverse transformation for playback

H04N9/802

involving processing of the sound signal H04N9/806, H04N9/835 take precedence

H04N9/804

involving pulse code modulation of the colour picture signal components

H04N9/8042

involving data reduction

H04N9/8045

using predictive coding

H04N9/8047

using transform coding

H04N9/806

with processing of the sound signal

H04N9/8063

using time division multiplex of the PCM audio and PCM video signals

H04N9/8066

with insertion of the PCM audio signals in the vertical blanking interval of the PCM video signal

H04N9/808

involving pulse code modulation of the composite colour video-signal

H04N9/8081

involving data reduction

H04N9/8082

using predictive coding

H04N2009/8084

using transform coding

H04N9/8085

with processing of the sound signal

H04N9/8087

using time division multiplex of the PCM audio and PCM video signals

H04N9/8088

with insertion of the PCM audio signals in the vertical blanking interval of the PCM video signal

H04N9/81

the individual colour picture signal components being recorded sequentially only

H04N9/82

the individual colour picture signal components being recorded simultaneously only

H04N9/8205

involving the multiplexing of an additional signal and the colour video signal

H04N9/8211

the additional signal being a sound signal H04N9/835 takes precedence

H04N9/8216

using time division multiplex

H04N9/8222

using frequency division multiplex

H04N9/8227

the additional signal being at least another television signal

H04N9/8233

the additional signal being a character code signal

H04N9/8238

for teletext

H04N9/8244

involving the use of subcodes

H04N9/825

the luminance and chrominance signals being recorded in separate channels

H04N9/8255

with sound processing

H04N9/83

the recorded chrominance signal occupying a frequency band under the frequency band of the recorded brightness signal

H04N9/831

using intermediate digital signal processing

H04N9/832

using an increased bandwidth for the luminance or the chrominance signal

H04N9/833

with selection of the conventional or the increased bandwidth signal, e.g. VHS or SVHS signal selection

H04N9/835

involving processing of the sound signal

H04N9/8355

the sound carriers being frequency multiplexed between the luminance carrier and the chrominance carrier

H04N9/84

the recorded signal showing a feature, which is different in adjacent track parts, e.g. different phase or frequency

H04N9/85

the recorded brightness signal occupying a frequency band totally overlapping the frequency band of the recorded chrominance signal, e.g. frequency interleaving

H04N9/86

the individual colour picture signal components being recorded sequentially and simultaneously, e.g. corresponding to SECAM-system

H04N9/87

Regeneration of colour television signals H04N9/80 takes precedence

H04N9/8707

using a demodulator and a remodulator, e.g. for standard conversion

H04N9/8715

involving the mixing of the reproduced video signal with a non-recorded signal, e.g. a text signal

H04N9/8722

Regeneration of a colour reference signal, e.g. the colour synchronisaton burst signal, the chrominance signal carrier

H04N9/873

for restoring the colour component sequence of the reproduced

chrominance

signal

H04N9/877

by assembling picture element blocks in an intermediate memory

H04N9/88

Signal drop-out compensation

H04N9/882

the signal being a composite colour television signal

H04N9/885

using a digital intermediate memory

H04N9/888

for signals recorded by pulse code modulation

H04N9/89

Time-base error compensation

H04N9/893

using an analogue memory, e.g. a CCD shift register, the delay of which is controlled by a voltage controlled oscillator

H04N9/896

using a digital memory with independent write-in and read-out clock generators

H04N9/898

using frequency multiplication of the reproduced colour signal carrier with another auxiliary reproduced signal, e.g. a pilot signal carrier

H04N9/83 takes precedence

H04N11/00

Colour television systems details H04N9/00

H04N11/02

with bandwidth reduction

H04N11/04

, H04N11/24

take precedence

H04N11/04

using pulse code modulation

H04N11/24 takes precedence

H04N11/042

Codec means

H04N11/044

involving transform coding

H04N11/046

DPCM

H04N11/048

Sub-Nyquist sampling

H04N11/06

Transmission systems characterised by the manner in which the individual colour picture signal components are combined

H04N11/08

using sequential signals only dot sequential systems H04N11/12

H04N11/10

in which colour signals are inserted in the blanking interval of brightness signal

H04N11/12

using simultaneous signals only

H04N11/14

in which one signal, modulated in phase and amplitude, conveys colour information and a second signal conveys brightness information, e.g. NTSC-system

H04N11/143

Encoding means therefor H04N11/16 takes precedence

H04N11/146

Decoding means therefor H04N11/16 takes precedence

H04N11/16

the chrominance signal alternating in phase, e.g. PAL-system

H04N11/162

Encoding means therefor H04N11/167 takes precedence

H04N11/165

Decoding means therefor H04N11/167 takes precedence

H04N11/167

a resolution-increasing signal being multiplexed to the PAL-system signal, e.g. PAL-PLUS-system

H04N11/18

using simultaneous and sequential signals, e.g. SECAM-system

H04N11/183

Encoding means therefor

H04N11/186

Decoding means therefor

H04N11/20

Conversion of the manner in which the individual colour picture signal components are combined, e.g. conversion of colour television standards

H04N11/22

in which simultaneous signals are converted into sequential signals or vice versa

H04N11/24

High-definition television systems

H04N11/26

involving two-channel transmission

H04N11/28

involving bandwidth reduction, e.g. subsampling

H04N11/30

with transmission of the extra information by means of quadrature modulation

H04N13/00

Stereoscopic video systems

Multi-view video systems

Details thereof

This group covers systems providing a three-dimensional [3D] effect, or different views to one or more viewers by means of electronic signals representing images, which could be taken from different viewpoints, or by means of signals including depth information , e.g. taken from different viewpoint locations representing the interocular distance

H04N2013/0074

Stereoscopic image analysis

H04N2013/0077

Colour aspects

H04N2013/0081

Depth or disparity estimation from stereoscopic image signals

H04N2013/0085

Motion estimation from stereoscopic image signals

H04N2013/0088

Synthesising a monoscopic image signal from stereoscopic images, e.g. synthesising a panoramic or high resolution monoscopic image

H04N2013/0092

Image segmentation from stereoscopic image signals

H04N2013/0096

Synchronisation or controlling aspects

H04N13/10

Processing, recording or transmission of stereoscopic or multi-view image signals

H04N13/106

Processing image signals for multi-view video sequence encoding H04N19/597

H04N13/111

Transformation of image signals corresponding to virtual viewpoints, e.g. spatial image interpolation

H04N13/117

the virtual viewpoint locations being selected by the viewers or determined by viewer tracking

H04N13/122

Improving the 3D impression of stereoscopic images by modifying image signal contents, e.g. by filtering or adding monoscopic depth cues H04N13/128 takes precedence

H04N13/125

for crosstalk reduction

H04N13/128

Adjusting depth or disparity

H04N13/133

Equalising the characteristics of different image components, e.g. their average brightness or colour balance

H04N13/139

Format conversion, e.g. of frame-rate or size

H04N13/144

for flicker reduction

H04N13/15

for colour aspects of image signals

H04N13/156

Mixing image signals

H04N13/158

Switching image signals

H04N13/161

Encoding, multiplexing or demultiplexing different image signal components for multi-view video sequence encoding H04N19/597

H04N13/167

Synchronising or controlling image signals

H04N13/172

image signals comprising non-image signal components, e.g. headers or format information

H04N13/178

Metadata, e.g. disparity information

H04N13/183

On-screen display [OSD] information, e.g. subtitles or menus

H04N13/189

Recording image signals

Reproducing recorded image signals

H04N13/194

Transmission of image signals

H04N13/20

Image signal generators

H04N13/204

using stereoscopic image cameras stereoscopic photography G03B35/00

H04N13/207

using a single 2D image sensor

H04N13/211

using temporal multiplexing

H04N13/214

using spectral multiplexing

H04N13/218

using spatial multiplexing

H04N13/221

using the relative movement between cameras and objects

H04N13/225

using parallax barriers

H04N13/229

using lenticular lenses, e.g. arrangements of cylindrical lenses

H04N13/232

using fly-eye lenses, e.g. arrangements of circular lenses

H04N13/236

using varifocal lenses or mirrors

H04N13/239

using two 2D image sensors having a relative position equal to or related to the interocular distance H04N13/243 takes precedence

H04N13/243

using three or more 2D image sensors

H04N13/246

Calibration of cameras

H04N13/25

using two or more image sensors with different characteristics other than in their location or field of view, e.g. having different resolutions or colour pickup characteristics

using image signals from one sensor to control the characteristics of another sensor

H04N13/254

in combination with electromagnetic radiation sources for illuminating objects

H04N13/257

Colour aspects

H04N13/261

with monoscopic-to-stereoscopic image conversion

H04N13/264

using the relative movement of objects in two video frames or fields

H04N13/266

by scanning a film

H04N13/268

based on depth image-based rendering [DIBR]

H04N13/271

wherein the generated image signals comprise depth maps or disparity maps

H04N13/275

from 3D object models, e.g. computer-generated stereoscopic image signals

H04N13/279

the virtual viewpoint locations being selected by the viewers or determined by tracking

H04N13/282

for generating image signals corresponding to three or more geometrical viewpoints, e.g. multi-view systems

H04N13/286

having separate monoscopic and stereoscopic modes

H04N13/289

Switching between monoscopic and stereoscopic modes

H04N13/293

Generating mixed stereoscopic images

Generating mixed monoscopic and stereoscopic images, e.g. a stereoscopic image overlay window on a monoscopic image background

H04N13/296

Synchronisation thereof

Control thereof

H04N13/30

Image reproducers optical systems for producing stereoscopic or other three-dimensional effects G02B30/00

H04N13/302

for viewing without the aid of special glasses, i.e. using autostereoscopic displays

H04N13/305

using lenticular lenses, e.g. arrangements of cylindrical lenses

H04N13/307

using fly-eye lenses, e.g. arrangements of circular lenses

H04N13/31

using parallax barriers

H04N13/312

the parallax barriers being placed behind the display panel, e.g. between backlight and spatial light modulator [SLM]

H04N13/315

the parallax barriers being time-variant

H04N13/317

using slanted parallax optics

H04N13/32

using arrays of controllable light sources

using moving apertures or moving light sources

H04N13/322

using varifocal lenses or mirrors

H04N13/324

Colour aspects

H04N13/327

Calibration thereof

H04N13/332

Displays for viewing with the aid of special glasses or head-mounted displays [HMD]

H04N13/334

using spectral multiplexing

H04N13/337

using polarisation multiplexing

H04N13/339

using spatial multiplexing H04N13/337 takes precedence

H04N13/341

using temporal multiplexing

H04N13/344

with head-mounted left-right displays

H04N13/346

using prisms or semi-transparent mirrors

H04N13/349

Multi-view displays for displaying three or more geometrical viewpoints without viewer tracking for viewing without the aid of special glasses using fly-eye lenses H04N13/307

H04N13/351

for displaying simultaneously

H04N13/354

for displaying sequentially

H04N13/356

having separate monoscopic and stereoscopic modes

H04N13/359

Switching between monoscopic and stereoscopic modes

H04N13/361

Reproducing mixed stereoscopic images

Reproducing mixed monoscopic and stereoscopic images, e.g. a stereoscopic image overlay window on a monoscopic image background

H04N13/363

using image projection screens volumetric display H04N13/388

H04N13/365

using digital micromirror devices [DMD]

H04N13/366

using viewer tracking

H04N13/368

for two or more viewers

H04N13/371

for tracking viewers with different interocular distances

for tracking rotational head movements around the vertical axis

H04N13/373

for tracking forward-backward translational head movements, i.e. longitudinal movements

H04N13/376

for tracking left-right translational head movements, i.e. lateral movements

H04N13/378

for tracking rotational head movements around an axis perpendicular to the screen

H04N13/38

for tracking vertical translational head movements

H04N13/383

for tracking with gaze detection, i.e. detecting the lines of sight of the viewer's eyes

H04N13/385

alternating rapidly the location of the left-right image components on the display screens for viewing without the aid of special glasses using time variant parallax barriers H04N13/315; displays for viewing with the aid of special glasses or head-mounted displays using temporal multiplexing H04N13/341

H04N13/388

Volumetric displays, i.e. systems where the image is built up from picture elements distributed through a volume

H04N13/39

the picture elements emitting light at places where a pair of light beams intersect in a transparent material

H04N13/393

the volume being generated by a moving, e.g. vibrating or rotating, surface

H04N13/395

with depth sampling, i.e. the volume being constructed from a stack or sequence of 2D image planes

H04N13/398

Synchronisation thereof

Control thereof

H04N2013/40

Privacy aspects, i.e. devices showing different images to different viewers, the images not being viewpoints of the same scene

H04N2013/403

the images being monoscopic

H04N2013/405

the images being stereoscopic or three dimensional

H04N17/00

Diagnosis, testing or measuring for television systems or their details

H04N17/002

for television cameras

H04N17/004

for digital television systems

H04N2017/006

for television sound

H04N2017/008

for television teletext

H04N17/02

for colour television signals

H04N17/04

for receivers

H04N17/045

Self-contained testing apparatus

H04N17/06

for recorders

H04N19/00

Methods or arrangements for coding, decoding, compressing or decompressing digital video signals

H04N19/10

using adaptive coding

When classifying in this group, each aspect relating to adaptive coding should, insomuch as possible, be classified in each one of subgroups H04N19/102, H04N19/134, H04N19/169 and H04N19/189.

H04N19/102

characterised by the element, parameter or selection affected or controlled by the adaptive coding

H04N19/103

Selection of coding mode or of prediction mode

H04N19/105

Selection of the reference unit for prediction within a chosen coding or prediction mode, e.g. adaptive choice of position and number of pixels used for prediction

H04N19/107

between spatial and temporal predictive coding, e.g. picture refresh

H04N19/109

among a plurality of temporal predictive coding modes

H04N19/11

among a plurality of spatial predictive coding modes

H04N19/112

according to a given display mode, e.g. for interlaced or progressive display mode

H04N19/114

Adapting the group of pictures [GOP] structure, e.g. number of B-frames between two anchor frames H04N19/107 takes precedence

H04N19/115

Selection of the code volume for a coding unit prior to coding

H04N19/117

Filters, e.g. for pre-processing or post-processing sub-band filter banks H04N19/635

H04N19/119

Adaptive subdivision aspects, e.g. subdivision of a picture into rectangular or non-rectangular coding blocks

H04N19/12

Selection from among a plurality of transforms or standards, e.g. selection between discrete cosine transform [DCT] and sub-band transform or selection between H.263 and H.264

When classifying in this group, each compression algorithm is further classified in the relevant subgroups of groups H04N19/60 or H04N19/90.

H04N19/122

Selection of transform size, e.g. 8x8 or 2x4x8 DCT

Selection of sub-band transforms of varying structure or type

H04N19/124

Quantisation

H04N19/126

Details of normalisation or weighting functions, e.g. normalisation matrices or variable uniform quantisers

H04N19/127

Prioritisation of hardware or computational resources

H04N19/129

Scanning of coding units, e.g. zig-zag scan of transform coefficients or flexible macroblock ordering [FMO]

H04N19/13

Adaptive entropy coding, e.g. adaptive variable length coding [AVLC] or context adaptive binary arithmetic coding [CABAC]

H04N19/132

Sampling, masking or truncation of coding units, e.g. adaptive resampling, frame skipping, frame interpolation or high-frequency transform coefficient masking

H04N19/134

characterised by the element, parameter or criterion affecting or controlling the adaptive coding

H04N19/136

Incoming video signal characteristics or properties

H04N19/137

Motion inside a coding unit, e.g. average field, frame or block difference

H04N19/139

Analysis of motion vectors, e.g. their magnitude, direction, variance or reliability

H04N19/14

Coding unit complexity, e.g. amount of activity or edge presence estimation H04N19/146 takes precedence

H04N19/142

Detection of scene cut or scene change

H04N19/146

Data rate or code amount at the encoder output

H04N19/147

according to rate distortion criteria rate-distortion as a criterion for motion estimation H04N19/567

H04N19/149

by estimating the code amount by means of a model, e.g. mathematical model or statistical model

H04N19/15

by monitoring actual compressed data size at the memory before deciding storage at the transmission buffer

H04N19/152

by measuring the fullness of the transmission buffer

H04N19/154

Measured or subjectively estimated visual quality after decoding, e.g. measurement of distortion use of rate-distortion criteria H04N19/147

H04N19/156

Availability of hardware or computational resources, e.g. encoding based on power-saving criteria

H04N19/157

Assigned coding mode, i.e. the coding mode being predefined or preselected to be further used for selection of another element or parameter

H04N19/159

Prediction type, e.g. intra-frame, inter-frame or bidirectional frame prediction

H04N19/16

for a given display mode, e.g. for interlaced or progressive display mode

H04N19/162

User input

H04N19/164

Feedback from the receiver or from the transmission channel

H04N19/166

concerning the amount of transmission errors, e.g. bit error rate [BER]

H04N19/167

Position within a video image, e.g. region of interest [ROI]

H04N19/169

characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding

H04N19/17

the unit being an image region, e.g. an object

H04N19/172

the region being a picture, frame or field

H04N19/174

the region being a slice, e.g. a line of blocks or a group of blocks

H04N19/176

the region being a block, e.g. a macroblock

H04N19/177

the unit being a group of pictures [GOP]

H04N19/179

the unit being a scene or a shot

H04N19/18

the unit being a set of transform coefficients

H04N19/182

the unit being a pixel

H04N19/184

the unit being bits, e.g. of the compressed video stream

H04N19/186

the unit being a colour or a chrominance component

H04N19/187

the unit being a scalable video layer

H04N19/188

the unit being a video data packet, e.g. a network abstraction layer [NAL] unit

H04N19/1883

the unit relating to sub-band structure, e.g. hierarchical level, directional tree, e.g. low-high [LH], high-low [HL], high-high [HH]

H04N19/1887

the unit being a variable length codeword

H04N19/189

characterised by the adaptation method, adaptation tool or adaptation type used for the adaptive coding

H04N19/19

using optimisation based on Lagrange multipliers

H04N19/192

the adaptation method, adaptation tool or adaptation type being iterative or recursive

H04N19/194

involving only two passes

H04N19/196

being specially adapted for the computation of encoding parameters, e.g. by averaging previously computed encoding parameters processing of motion vectors H04N19/513

H04N19/197

including determination of the initial value of an encoding parameter H04N19/56 takes precedence

H04N19/198

including smoothing of a sequence of encoding parameters, e.g. by averaging, by choice of the maximum, minimum or median value

H04N19/20

using video object coding

H04N19/21

with binary alpha-plane coding for video objects, e.g. context-based arithmetic encoding [CAE]

H04N19/23

with coding of regions that are present throughout a whole video segment, e.g. sprites, background or mosaic

H04N19/25

with scene description coding, e.g. binary format for scenes [BIFS] compression

H04N19/27

involving both synthetic and natural picture components, e.g. synthetic natural hybrid coding [SNHC]

H04N19/29

involving scalability at the object level, e.g. video object layer [VOL]

H04N19/30

using hierarchical techniques, e.g. scalability H04N19/63 takes precedence

H04N19/31

in the temporal domain

H04N19/33

in the spatial domain

H04N19/34

Scalability techniques involving progressive bit-plane based encoding of the enhancement layer, e.g. fine granular scalability [FGS]

H04N19/36

Scalability techniques involving formatting the layers as a function of picture distortion after decoding, e.g. signal-to-noise [SNR] scalability

H04N19/37

with arrangements for assigning different transmission priorities to video input data or to video coded data

H04N19/39

involving multiple description coding [MDC], i.e. with separate layers being structured as independently decodable descriptions of input picture data

H04N19/395

involving distributed video coding [DVC], e.g. Wyner-Ziv video coding or Slepian-Wolf video coding

H04N19/40

using video transcoding, i.e. partial or full decoding of a coded input stream followed by re-encoding of the decoded output stream

H04N19/42

characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation H04N19/635 takes precedence

H04N19/423

characterised by memory arrangements H04N19/433 takes precedence

H04N19/426

using memory downsizing methods

H04N19/427

Display on the fly, e.g. simultaneous writing to and reading from decoding memory

H04N19/428

Recompression, e.g. by spatial or temporal decimation

H04N19/43

Hardware specially adapted for motion estimation or compensation

H04N19/433

characterised by techniques for memory access

H04N19/436

using parallelised computational arrangements

H04N19/439

using cascaded computational arrangements for performing a single operation, e.g. filtering

H04N19/44

Decoders specially adapted therefor, e.g. video decoders which are asymmetric with respect to the encoder

H04N19/45

performing compensation of the inverse transform mismatch, e.g. Inverse Discrete Cosine Transform [IDCT] mismatch

H04N19/46

Embedding additional information in the video signal during the compression process H04N19/517, H04N19/68, H04N19/70 take precedence

H04N19/463

by compressing encoding parameters before transmission

H04N19/467

characterised by the embedded information being invisible, e.g. watermarking

H04N19/48

using compressed domain processing techniques other than decoding, e.g. modification of transform coefficients, variable length coding [VLC] data or run-length data motion estimation in a transform domain H04N19/547; processing of decoded motion vectors H04N19/513

H04N19/50

using predictive coding H04N19/61 takes precedence

H04N19/503

involving temporal prediction adaptive coding with adaptive selection between spatial and temporal predictive coding H04N19/107; adaptive coding with adaptive selection among a plurality of temporal predictive coding modes H04N19/109

H04N19/507

using conditional replenishment

H04N19/51

Motion estimation or motion compensation

H04N19/513

Processing of motion vectors

H04N19/517

by encoding

H04N19/52

by predictive encoding

H04N19/521

for estimating the reliability of the determined motion vectors or motion vector field, e.g. for smoothing the motion vector field or for correcting motion vectors

H04N19/523

with sub-pixel accuracy

H04N19/527

Global motion vector estimation

H04N19/53

Multi-resolution motion estimation

Hierarchical motion estimation

H04N19/533

Motion estimation using multistep search, e.g. 2D-log search or one-at-a-time search [OTS]

H04N19/537

Motion estimation other than block-based

H04N19/54

using feature points or meshes

H04N19/543

using regions

H04N19/547

Motion estimation performed in a transform domain

H04N19/55

Motion estimation with spatial constraints, e.g. at image or region borders

H04N19/553

Motion estimation dealing with occlusions

H04N19/557

Motion estimation characterised by stopping computation or iteration based on certain criteria, e.g. error magnitude being too large or early exit

H04N19/56

Motion estimation with initialisation of the vector search, e.g. estimating a good candidate to initiate a search

H04N19/563

Motion estimation with padding, i.e. with filling of non-object values in an arbitrarily shaped picture block or region for estimation purposes

H04N19/567

Motion estimation based on rate distortion criteria

H04N19/57

Motion estimation characterised by a search window with variable size or shape

H04N19/573

Motion compensation with multiple frame prediction using two or more reference frames in a given prediction direction

H04N19/577

Motion compensation with bidirectional frame interpolation, i.e. using B-pictures

H04N19/58

Motion compensation with long-term prediction, i.e. the reference frame for a current frame not being the temporally closest one H04N19/23 takes precedence

H04N19/583

Motion compensation with overlapping blocks

H04N19/587

involving temporal sub-sampling or interpolation, e.g. decimation or subsequent interpolation of pictures in a video sequence

H04N19/59

involving spatial sub-sampling or interpolation, e.g. alteration of picture size or resolution

H04N19/593

involving spatial prediction techniques

H04N19/597

specially adapted for multi-view video sequence encoding

H04N19/60

using transform coding

H04N19/61

in combination with predictive coding

H04N19/615

using motion compensated temporal filtering [MCTF]

H04N19/619

the transform being operated outside the prediction loop

H04N19/62

by frequency transforming in three dimensions H04N19/63 takes precedence

H04N19/625

using discrete cosine transform [DCT]

H04N19/63

using sub-band based transform, e.g. wavelets

H04N19/635

characterised by filter definition or implementation details

H04N19/64

characterised by ordering of coefficients or of bits for transmission

H04N19/645

by grouping of coefficients into blocks after the transform

H04N19/647

using significance based coding, e.g. Embedded Zerotrees of Wavelets [EZW] or Set Partitioning in Hierarchical Trees [SPIHT]

H04N19/649

the transform being applied to non rectangular image segments

H04N19/65

using error resilience

H04N19/66

involving data partitioning, i.e. separation of data into packets or partitions according to importance

H04N19/67

involving unequal error protection [UEP], i.e. providing protection according to the importance of the data

H04N19/68

involving the insertion of resynchronisation markers into the bitstream

H04N19/69

involving reversible variable length codes [RVLC]

H04N19/70

characterised by syntax aspects related to video coding, e.g. related to compression standards

H04N19/80

Details of filtering operations specially adapted for video compression, e.g. for pixel interpolation H04N19/635, H04N19/86 take precedence

H04N19/82

involving filtering within a prediction loop

H04N19/85

using pre-processing or post-processing specially adapted for video compression

H04N19/86

involving reduction of coding artifacts, e.g. of blockiness

H04N19/865

with detection of the former encoding block subdivision in decompressed video

H04N19/87

involving scene cut or scene change detection in combination with video compression

H04N19/88

involving rearrangement of data among different coding units, e.g. shuffling, interleaving, scrambling or permutation of pixel data or permutation of transform coefficient data among different blocks

H04N19/89

involving methods or arrangements for detection of transmission errors at the decoder

H04N19/895

in combination with error concealment

H04N19/90

using coding techniques not provided for in groups H04N19/10-H04N19/85, e.g. fractals

H04N19/91

Entropy coding, e.g. variable length coding [VLC] or arithmetic coding

H04N19/93

Run-length coding

H04N19/94

Vector quantisation

H04N19/96

Tree coding, e.g. quad-tree coding

H04N19/97

Matching pursuit coding

H04N19/98

Adaptive-dynamic-range coding [ADRC]

H04N19/99

involving fractal coding

H04N21/00

Selective content distribution, e.g. interactive television or video on demand [VOD] real-time bi-directional transmission of motion video data H04N7/14

; broadcast or conference over packet switching networks H04L12/18

This group covers :

interactive video distribution processes, systems, or elements thereof, which are characterised by point-to-multipoint system configurations, and which are mainly used for motion video data unidirectional distribution or delivery resulting from interactions between systems operators, e.g. access or service providers, or users e.g. subscribers, and system elements.

such systems include dedicated communication systems, such as television distribution systems, which primarily distribute or deliver motion video data in the manner indicated, which may, in addition, provide a framework for further, diverse data communications or services in either unidirectional or bi-directional form. However, video will occupy most of the downlink bandwidth in the distribution process.

typically, system operators interface with transmitter-side elements or users' interface with receiver-side elements in order to facilitate, through interaction with such elements, the dynamic control of data processing or data flow at various points in the system. This interaction is typically occasional or intermittent in nature.

processes, systems or elements thereof specially adapted to the generation, distribution and processing of data, which is either associated with video content, e.g. metadata, ratings, or related to the user or his environment and which has been actively or passively gathered. This data is either used to facilitate interaction or to alter or target the content.

In this main group, the first place priority rule is applied, i.e. at each hierarchical level, in the absence of an indication to the contrary, classification is made in the first appropriate place.

In this main group, the following terms and expressions are used with the meaning indicated:

additional data - designates still pictures, textual, graphical or executable data such as software. It is used to convey supplemental information and can be generated prior to or during the distribution process itself, e.g. metadata, keys.

content designates video or audio streams, which may be combined with additional data. Video data will always be present and occupy most of the downlink bandwidth in the distribution process

server - designates an apparatus designed for adapting the content received from the content provider to the distribution network. It also manages the distribution to client devices or intermediate components over a network. Further servers may also be present for gathering or generating additional data, e.g. rights management server

additional data server - designates a server, which sole purpose is the distribution or management of additional data. It is not in charge of the distribution of video or audio data

client - designates an apparatus such as a TV receiver, a set-top-box, a PC-TV, a mobile appliance (e.g. mobile phone or receiver in a vehicle), for receiving video, audio and possibly additional data from one or several servers or intermediate components via a network for further processing, storing or displaying. It can also transmit this data on a home-based local network to further devices, e.g. a home server transmitting video to PCs and set-top-boxes within a home.

local network - pertains to a restricted area, e.g. a home or a vehicle, and designates the link between a client and its peripheral devices

network - is to be distinguished from "local network": "network" designates the link between the server and the clients, or between the server and the intermediate components, or between the intermediate components and the clients, or between remotely located clients

distribution - encompasses broadcasting, multicasting and unicasting techniques for transmitting content from one or more sources to one or more receiving stations. The distribution follows a request by a receiving station to the source, e.g. VOD or from a customization of the content by the source, e.g. targeting advertisements to a demographic group in a unidirectional or bidirectional system. Additionally, distribution encompasses techniques where the client acts as a source and another client acts as a receiving station, e.g. a peer-to-peer system for sharing video among client devices

end-user - designates a physical person, e.g. a TV viewer, who consumes the content using the client device. He is the final recipient of the content distributed by the server

interaction - covers actions occurring between or among two or more objects that have an effect upon one another, wherein objects comprise users, system operators, system elements, or content. The user may interact with content locally at the client device, e.g. for requesting additional data stored within the client device. The user may interact with content remotely through a server e.g. for VOD playback control or for uploading video to a server. The client device may interact with the content e.g. selecting content based upon the user profile. The client device may interact with a server using a return channel, e.g. for authenticating client or uploading client hardware capabilities. The server may interact with a client device, e.g. to force a client to tune to an advertisement channel

upstream - designates the direction of data flow towards the source, e.g. a server receiving a request via a mobile phone network.

downstream - designates the direction of data flow towards a client, e.g. a client receiving data originating from a server elementary stream An elementary stream (ES) as defined by the MPEG system layer designates the output of an audio or video encoder.

H04N21/20

Servers specifically adapted for the distribution of content, e.g. VOD servers

Operations thereof

H04N21/21

Server components or server architectures

H04N21/214

Specialised server platform, e.g. server located in an airplane, hotel, hospital

arrangements specially adapted for local area broadcast systems H04H20/61

H04N21/2143

located in a single building, e.g. hotel, hospital or museum arrangements specially adapted for plural spots in a confined site in broadcast systems H04H20/63; adaptations for transmission by electric cable for domestic distribution in television systems H04N7/106

H04N21/2146

located in mass transportation means, e.g. aircraft, train or bus flight-deck installations for entertainment or communications B64D11/0015; arrangements specially adapted for transportation systems in broadcast systems H04H20/62; moving wireless networks H04W84/005

H04N21/218

Source of audio or video content

, e.g. local disk arrays details of retrieval in video databases G06F16/739

H04N21/21805

enabling multiple viewpoints, e.g. using a plurality of cameras

H04N21/2181

comprising remotely distributed storage units, e.g. when movies are replicated over a plurality of video servers distributed storage of data in networks, e.g. transport arrangements for network file system [NFS], storage area networks [SAN] or network attached storage [NAS], H04L67/1097

H04N21/21815

comprising local storage units

H04N21/2182

involving memory arrays, e.g. RAID disk arrays RAID arrays per se G06F3/0689; use of parity to protect data in RAID systems G06F11/1008

H04N21/21825

involving removable storage units, e.g. tertiary storage such as magnetic tapes or optical disks

H04N21/2183

Cache memory

caches in web servers or browsers G06F16/9574; intermediate storage and caching in data networks H04L67/568

H04N21/2187

Live feed

H04N21/222

Secondary servers, e.g. proxy server, cable television Head-end

provisioning of proxy services in data packet switching networks H04L67/56

H04N21/2221

being a cable television head-end CATV in broadcast systems H04H20/78

H04N21/2223

being a public access point, e.g. for downloading to or uploading from clients arrangements specially adapted to plural spots in a confined site in broadcast systems H04H20/63

H04N21/2225

Local VOD servers

H04N21/226

Characteristics of the server or

Internal components of the server

H04N21/2265

Server identification by a unique number or address, e.g. serial number network arrangements, protocols or services for addressing or naming H04L61/00

H04N21/23

Processing of content or additional data

Elementary server operations

Server middleware

H04N21/231

Content storage operation, e.g. caching movies for short term storage, replicating data over plural servers, prioritizing data for deletion

H04N21/23103

using load balancing strategies, e.g. by placing or distributing content on different disks, different memories or different servers storage management G06F3/0604; allocation of resources considering the load in multiprogramming arrangements G06F9/505; techniques for rebalancing the load in a distributed system G06F9/5083; access to distributed or replicated servers, e.g. load balancing, in data networks H04L67/1001

H04N21/23106

involving caching operations prefetching while addressing of a memory level in which the access to the desired data or data block requires associative addressing means within memory systems or architectures G06F12/0862; caching at an intermediate stage in a data network H04L67/568

H04N21/23109

by placing content in organized collections, e.g. EPG data repository details of retrieval of video data and associated meta data in video databases G06F16/739

H04N21/23113

involving housekeeping operations for stored content, e.g. prioritizing content for deletion because of storage space restrictions storage management, e.g. defragmentation G06F3/0604; snloading stored programs G06F9/445; housekeeping operations in file systems, e.g. deletion policies G06F16/10; buffering arrangements in a network node or in an end terminal in packet networks H04L49/90

H04N21/23116

involving data replication, e.g. over plural servers synchronization of replicated data G06F11/1658; error detection or correction by means of data replication G06F11/2053; replication in distributed file systems G06F16/10; replication in distributed file systems G06F16/27; replication or mirroring of data in data networks H04L67/1095

H04N21/2312

Data placement on disk arrays

data placement in general G06F3/0604

H04N21/2315

using interleaving

H04N21/2318

using striping

H04N21/232

Content retrieval operation

locally

within server, e.g. reading video streams from disk arrays

storage management G06F3/0604; details of querying and searching of video data from a database G06F16/739

H04N21/2323

using file mapping

H04N21/2326

Scheduling disk or memory reading operations

H04N21/233

Processing of audio elementary streams

monitoring, identification or recognition of audio in broadcast systems H04H60/58

H04N21/2335

involving reformatting operations of audio signals, e.g. by converting from one coding standard to another details of audio signal transcoding G10L19/173

H04N21/234

Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs

H04N21/23406

involving management of server-side video buffer

H04N21/23412

for generating or manipulating the scene composition of objects, e.g. MPEG-4 objects

H04N21/23418

involving operations for analysing video streams, e.g. detecting features or characteristics television picture signal circuitry for scene change detection H04N5/147; filtering for image enhancement G06T5/00; methods or arrangements for recognising scenes G06V20/00; arrangements characterised by components specially adapted for monitoring, identification or recognition of video in broadcast systems H04H60/59

H04N21/23424

involving splicing one content stream with another content stream, e.g. for inserting or substituting an advertisement

H04N21/2343

involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements

video transcoding H04N19/40; media packet handling at the source H04L65/762

H04N21/234309

by transcoding between formats or standards, e.g. from MPEG-2 to MPEG-4 or from Quicktime to Realvideo conversion of standards in analog television systems H04N7/01

H04N21/234318

by decomposing into objects, e.g. MPEG-4 objects

H04N21/234327

by decomposing into layers, e.g. base layer and one or more enhancement layers

H04N21/234336

by media transcoding, e.g. video is transformed into a slideshow of still pictures or audio is converted into text

H04N21/234345

the reformatting operation being performed only on part of the stream, e.g. a region of the image or a time segment

H04N21/234354

by altering signal-to-noise ratio parameters, e.g. requantization

H04N21/234363

by altering the spatial resolution, e.g. for clients with a lower screen resolution

H04N21/234372

for performing aspect ratio conversion

H04N21/234381

by altering the temporal resolution, e.g. decreasing the frame rate by frame skipping

H04N21/23439

for generating different versions

H04N21/2347

involving video stream encryption

H04N21/23473

by pre-encrypting

H04N21/23476

by partially encrypting, e.g. encrypting the ending portion of a movie

H04N21/235

Processing of additional data, e.g. scrambling of additional data or processing content descriptors

H04N21/2351

involving encryption of additional data arrangements using cryptography for the use of broadcast information or broadcast-related information H04H60/23

H04N21/2353

specifically adapted to content descriptors, e.g. coding, compressing or processing of metadata

H04N21/2355

involving reformatting operations of additional data, e.g. HTML pages optimising the visualization of content for information retrieval from the Internet G06F16/9577; tracking of instant messages H04L51/234; media packet handling at the source H04L65/762

H04N21/2356

by altering the spatial resolution

H04N21/2358

for generating different versions, e.g. for different recipient devices

H04N21/236

Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream

Remultiplexing of multiplex streams

Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate

Assembling of a packetised elementary stream

multiplexing of data packets for data networks, e.g. RTP/UDP H04L65/00

H04N21/23602

Multiplexing isochronously with the video sync, e.g. according to bit-parallel or bit-serial interface formats, as SDI

H04N21/23605

Creation or processing of packetized elementary streams [PES]

H04N21/23608

Remultiplexing multiplex streams, e.g. involving modifying time stamps or remapping the packet identifiers

H04N21/23611

Insertion of stuffing data into a multiplex stream, e.g. to obtain a constant bitrate synchronisation arrangements in time-division multiplex systems using bit stuffing for systems with different or fluctuating information rates H04J3/073

H04N21/23614

Multiplexing of additional data and video streams arrangements for simultaneous broadcast of plural pieces of information H04H20/28

H04N21/23617

by inserting additional data into a data carousel, e.g. inserting software modules into a DVB carousel arrangements for broadcast or for distribution of identical information repeatedly in broadcast distribution systems H04H20/16

H04N21/2362

Generation or processing of Service Information [SI]

H04N21/2365

Multiplexing of several video streams

H04N21/23655

Statistical multiplexing, e.g. by controlling the encoder to alter its bitrate to optimize the bandwidth utilization

H04N21/2368

Multiplexing of audio and video streams

H04N21/237

Communication with additional data server

H04N21/238

Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth

Processing of multiplex streams

hybrid fiber coaxial [HFC] networks for downstream channel allocation for video distribution H04L12/2801; flow control in packet networks H04L47/10; real-time communication protocols in data switching networks H04L65/00; scheduling or organising the servicing of application requests H04L67/60

H04N21/23805

Controlling the feeding rate to the network, e.g. by controlling the video pump

H04N21/2381

Adapting the multiplex stream to a specific network, e.g. an Internet Protocol [IP] network

transmission of MPEG streams over ATM H04L12/5601

H04N21/2383

Channel coding

or modulation

of digital bit-stream, e.g. QPSK modulation arrangements for detecting or preventing errors in the information received by adapting the channel coding H04L1/0009; analogue front ends or means for connecting modulators, demodulators or transceivers to a transmission line H04L27/0002

H04N21/2385

Channel allocation H04N21/266 takes precedence

Bandwidth allocation H04N21/24 takes precedence

; allocation of channels according to the instantaneous demands of the users in time-division multiplex systems H04J3/1682; admission control, resource allocation in open networks H04L12/5692; arrangements for maintenance or administration in data switching networks involving bandwidth and capacity management H04L41/0896; negotiating bandwidth in wireless networks H04W28/16

H04N21/2387

Stream processing in response to a playback request from an end-user, e.g. for trick-play

H04N21/2389

Multiplex stream processing, e.g. multiplex stream encrypting

H04N21/23892

involving embedding information at multiplex stream level, e.g. embedding a watermark at packet level

H04N21/23895

involving multiplex stream encryption

H04N21/23897

by partially encrypting, e.g. encrypting only the ending portion of a movie

H04N21/239

Interfacing the upstream path of the transmission network, e.g. prioritizing client

content

requests hybrid fiber coaxial [HFC] networks for upstream channel allocation for video distribution H04L12/2801; flow control in data networks H04L47/10; real-time communication protocols in data switching networks H04L65/00; scheduling or organising the servicing of application requests H04L67/60

H04N21/2393

involving handling client requests scheduling or organising the servicing of application requests H04L67/60

H04N21/2396

characterized by admission policies admission control, resource allocation in open networks H04L12/5692; arrangements for network security using user profiles for access control H04L63/102; access security in wireless networks H04W12/08

H04N21/24

Monitoring of processes or resources, e.g. monitoring of server load, available bandwidth, upstream requests

monitoring of server performance or load G06F11/34; arrangements for observation, testing or troubleshooting for broadcast or for distribution combined with broadcast H04H20/12

H04N21/2401

Monitoring of the client buffer

H04N21/2402

Monitoring of the downstream path of the transmission network, e.g. bandwidth available traffic monitoring in data switching networks H04L43/00; monitoring data switching networks utilization H04L43/0876

H04N21/2404

Monitoring of server processing errors or hardware failure error or fault detection G06F11/07; monitoring in general G06F11/30

H04N21/2405

Monitoring of the internal components or processes of the server, e.g. server load allocation of resources in multiprogramming arrangements G06F9/50; performance measurement of computer activity G06F11/34

H04N21/2407

Monitoring of transmitted content, e.g. distribution time, number of downloads arrangements for monitoring programmes for broadcast or for distribution combined with broadcast H04H20/14

H04N21/2408

Monitoring of the upstream path of the transmission network, e.g. client requests monitoring data switching networks utilization H04L43/0876; scheduling or organising the servicing of application requests H04L67/60

H04N21/241

Operating system [OS] processes, e.g. server setup

H04N21/242

Synchronization processes, e.g. processing of PCR [Program Clock References]

arrangements for synchronising broadcast or distribution via plural systems in broadcast distribution systems H04H20/18

H04N21/25

Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies

maintenance or administration in data networks H04L41/00

H04N21/251

Learning process for intelligent management, e.g. learning user preferences for recommending movies details of learning user preferences for the retrieval of video data in a video database G06F16/739; computer systems using learning methods G06N3/08

H04N21/252

Processing of multiple end-users' preferences to derive collaborative data

H04N21/254

Management at additional data server, e.g. shopping server, rights management server

arrangements for maintenance or administration in data networks H04L41/00; network services using third party service providers H04L67/53

H04N21/2541

Rights Management protecting software against unauthorised usage in a vending or licensing environment G06F21/10; security in data switching network management H04L41/28; security management or policies for network security H04L63/20; access security in wireless networks H04W12/08

H04N21/2542

for selling goods, e.g. TV shopping payment schemes, payment architectures or payment protocols for electronic shopping systems G06Q20/12

H04N21/2543

Billing

, e.g. for subscription services payment schemes, architectures or protocols G06Q20/00; e-commerce G06Q30/00; arrangements for billing for the use of broadcast information or broadcast-related information H04H60/21

H04N21/25435

involving characteristics of content or additional data, e.g. video resolution or the amount of advertising

H04N21/2547

Third Party Billing, e.g. billing of advertiser

H04N21/258

Client or end-user data management, e.g. managing client capabilities, user preferences or demographics, processing of multiple end-users preferences to derive collaborative data

arrangements for services using the result on the distributing side of broadcast systems H04H60/66; profiles in network data switching protocols H04L67/30

H04N21/25808

Management of client data terminal profiles in network data switching protocols H04L67/303

H04N21/25816

involving client authentication restricting access to computer systems by authenticating users using a predetermined code G06F21/33; cryptographic authentication protocols H04L9/32; networks authentication protocols H04L63/08; authentication in wireless network security H04W12/06

H04N21/25825

involving client display capabilities, e.g. screen resolution of a mobile phone optimising the visualisation of content during browsing in the Internet G06F16/9577; processing of terminal status or physical abilities in wireless networks H04W8/22; authentication in wireless network security H04W12/06

H04N21/25833

involving client hardware characteristics, e.g. manufacturer, processing or storage capabilities allocation of resources considering hardware capabilities in multiprogramming arrangements G06F9/5044; allocation of resources considering software capabilities in multiprogramming arrangements G06F9/5055

H04N21/25841

involving the geographical location of the client retrieval from the Internet by querying based on geographical locations G06F16/9537; arrangements for identifying locations of receiving stations in broadcast systems H04H60/51; location of the user terminal in data switching networks H04L67/52; services making use of the location of users or terminals in wireless networks H04W4/02; locating users or terminals in wireless networks H04W64/00

H04N21/2585

Generation of a revocation list, e.g. of client devices involved in piracy acts

H04N21/25858

involving client software characteristics, e.g. OS identifier

H04N21/25866

Management of end-user data customer care in data networks H04L41/5077

H04N21/25875

involving end-user authentication restricting access to computer systems by authenticating users using a predetermined code G06F21/33; arrangements for secret or secure communication including means for verifying the identity or authority of a user of the system H04L9/32; networks authentication protocols H04L63/08; authentication in wireless network security H04W12/06

H04N21/25883

being end-user demographical data, e.g. age, family status or address arrangements for identifying locations of users in broadcast systems H04H60/52

H04N21/25891

being end-user preferences retrieval of video data in a video database based on user preferences G06F16/739; arrangements for recognizing users' preferences H04H60/46; user profiles in network data switching protocols H04L67/306; processing of user preferences or user profiles in wireless networks H04W8/18

H04N21/262

Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists

scheduling strategies for dispatcher in multiprogramming arrangements G06F9/4881; arrangements for scheduling broadcast services or broadcast-related services H04H60/06; flow control in packet networks H04L47/10; establishing a time schedule or organising the servicing of application requests H04L67/62

H04N21/26208

the scheduling operation being performed under constraints

H04N21/26216

involving the channel capacity, e.g. network bandwidth admission control, resource allocation in open networks H04L12/5692; flow control in packet networks H04L47/10; establishing a schedule or organising the servicing of application requests taking into account QoS H04L67/61

H04N21/26225

involving billing parameters, e.g. priority for subscribers of premium services

H04N21/26233

involving content or additional data duration or size, e.g. length of a movie, size of an executable file

H04N21/26241

involving the time of distribution, e.g. the best time of the day for inserting an advertisement or airing a children program

H04N21/2625

for delaying content or additional data distribution, e.g. because of an extended sport event

H04N21/26258

for generating a list of items to be played back in a given order, e.g. playlist, or scheduling item distribution according to such list retrieval of multimedia data based on playlists G06F16/40

H04N21/26266

for determining content or additional data repetition rate, e.g. of a file in a DVB carousel according to its importance arrangements for broadcast or for distribution of identical information repeatedly in broadcast distribution systems H04H20/16

H04N21/26275

for distributing content or additional data in a staggered manner, e.g. repeating movies on different channels in a time-staggered manner in a near video on demand system

H04N21/26283

for associating distribution time parameters to content, e.g. to generate electronic program guide data

H04N21/26291

for providing content or additional data updates, e.g. updating software modules, stored at the client deployment, distribution, installation, update of software G06F8/65; error detection or correction during software upgrading G06F11/1433; arrangements for updating broadcast information or broadcast-related information H04H60/25

H04N21/266

Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel

H04N21/26603

for automatically generating descriptors from content, e.g. when it is not made available by its provider, using content analysis techniques

H04N21/26606

for generating or managing entitlement messages, e.g. Entitlement Control Message [ECM] or Entitlement Management Message [EMM] arrangements for conditional access to broadcast information or to broadcast-related services H04H60/14

H04N21/26609

using retrofitting techniques, e.g. by re-encrypting the control words used for pre-encryption

H04N21/26613

for generating or managing keys in general key distribution for secret or secure communication involving central third party, e.g. key distribution center [KDC] or trusted third party [TTP] H04L9/083; network support of key management H04L63/06; key management for network security in communication control or processing H04W12/04

H04N21/26616

for merging a unicast channel into a multicast channel, e.g. in a VOD application, when a client served by unicast channel catches up a multicast channel to save bandwidth data multicast over packet-switching network H04L12/18

H04N21/2662

Controlling the complexity of the video stream, e.g. by scaling the resolution or bitrate of the video stream based on the client capabilities

H04N21/2665

Gathering content from different sources, e.g. Internet and satellite

H04N21/2668

Creating a channel for a dedicated end-user group, e.g. insertion of targeted commercials based on end-user profiles

information retrieval from the Internet by querying with filtering and personalisation G06F16/9535; arrangements for replacing or switching information during the broadcast H04H20/10; push services over packet-switching network H04L12/1859; adaptation of message content in packet-switching networks H04L51/063

H04N21/27

Server based end-user applications

H04N21/274

Storing end-user

multimedia

data in response to end-user request

, e.g. network recorder

H04N21/2743

Video hosting of uploaded data from client

H04N21/2747

Remote storage of video programs received via the downstream path, e.g. from the server

H04N21/278

Content descriptor database or directory service for end-user access

details of content or meta data based information retrieval of video data in video databases G06F16/739

H04N21/40

Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]

Operations thereof

H04N21/41

Structure of client

Structure of client peripherals

H04N21/4104

Peripherals receiving signals from specially adapted client devices

H04N21/4108

characterised by an identification number or address, e.g. local network address protecting specific internal or external computer components using identification number G06F21/73; network arrangements, protocols or services for addressing or naming H04L61/00

H04N21/411

having similar hardware or software capabilities as the client device itself, e.g. a first STB connected to a second STB

H04N21/4112

having fewer capabilities than the client, e.g. thin client having less processing power or no tuning capabilities

H04N21/4113

H04N21/4117

for generating hard copies of the content, e.g. printer, electronic paper interfaces to printers G06F3/12; printing data G06K15/02

H04N21/4122

additional display device, e.g. video projector digital output for controlling a plurality of local displays G06F3/1423

H04N21/4126

The peripheral being portable, e.g. PDAs or mobile phones

H04N21/41265

having a remote control device for bidirectional communication between the remote control device and client device unidirectional remote control device H04N21/42204

H04N21/4131

home appliance, e.g. lighting, air conditioning system, metering devices home automation data switching networks exchanging configuration information on appliance services H04L12/2807

H04N21/4135

external recorder interface circuits between an apparatus for recording television signals and a television receiver H04N5/775

H04N21/414

Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance

H04N21/41407

embedded in a portable device, e.g. video client on a mobile phone, PDA, laptop constructional details of equipment or arrangements specially adapted for portable computer application G06F1/1626; arrangements specially adapted for mobile receivers in broadcast systems H04H20/57

H04N21/41415

involving a public display, viewable by several users in a public space outside their home, e.g. movie theatre, information kiosk

H04N21/41422

located in transportation means, e.g. personal vehicle arrangements specially adapted for transportation systems in broadcast systems H04H20/62

H04N21/4143

embedded in a

Personal Computer [PC]

H04N21/4147

PVR [Personal Video Recorder] H04N5/76 takes precedence

; arrangements for broadcast with accumulation-type receivers H04H20/40

H04N21/418

External card to be used in combination with the client device, e.g. for conditional access

H04N21/4181

for conditional access

H04N21/4182

for identification purposes, e.g. storing user identification data, preferences, personal settings or data restricting access to computer systems by authenticating users using a predetermined code in combination with an additional device, e.g. dongle or smart card G06F21/123

H04N21/4183

providing its own processing capabilities, e.g. external module for video decoding

H04N21/4184

providing storage capabilities, e.g. memory stick

H04N21/4185

for payment

H04N21/422

Input-only peripherals

, i.e. input devices connected to specially adapted client devices

, e.g. global positioning system [GPS]

input devices also receiving signals from specially adapted client devices H04N21/4104

H04N21/42201

biosensors, e.g. heat sensor for presence detection, EEG sensors or any limb activity sensors worn by the user input arrangements for interaction with the human body based on nervous system activity detection G06F3/015

H04N21/42202

environmental sensors, e.g. for detecting temperature, luminosity, pressure, earthquakes

H04N21/42203

sound input device, e.g. microphone

H04N21/42204

User interfaces specially adapted for controlling a client device through a remote control device; Remote control devices therefor constructive details of casings for the remote control device H01H9/0235; user interfaces for controlling a tuning device of a television receiver through a remote control H03J9/00; remote control of peripheral devices connected to a television receiver through the remote control device of the television receiver H04B1/205

H04N21/42206

characterized by hardware details

H04N21/42208

Display device provided on the remote control

H04N21/42209

for displaying non-command information, e.g. electronic program guide [EPG], e-mail, messages or a second television channel

H04N21/4221

Dedicated function buttons, e.g. for the control of an EPG, subtitles, aspect ratio, picture-in-picture or teletext

H04N21/42212

Specific keyboard arrangements

H04N21/42213

for facilitating data entry

H04N21/42214

using alphanumerical characters

H04N21/42215

by measuring the time interval during which a key is pressed, e.g. for inputting sequences of digits when selecting a television channel

H04N21/42216

for quick navigation, e.g. through an EPG

H04N21/42218

for mapping a matrix of displayed objects on the screen to the numerical key-matrix of the remote control

H04N21/4222

Remote control device emulator integrated into a non-television apparatus, e.g. a PDA, media center or smart toy remote control device for a television receiver integrated into a mobile phone H04M1/72415

H04N21/42221

Transmission circuitry, e.g. infrared [IR] or radio frequency [RF]

H04N21/42222

Additional components integrated in the remote control device, e.g. timer, speaker, sensors for detecting position, direction or movement of the remote control, microphone or battery charging device

H04N21/42224

Touch pad or touch panel provided on the remote control

H04N21/42225

characterized by types of remote control, e.g. universal remote control

H04N21/42226

Reprogrammable remote control devices

H04N21/42227

the keys being reprogrammable, e.g. soft keys

H04N21/42228

the reprogrammable keys being displayed on a display screen in order to reduce the number of keys on the remote control device itself

H04N21/4223

Cameras H04N23/00 takes precedence

H04N21/4227

Providing

Remote input by a user located remotely from the client device, e.g. at work

H04N21/426

Internal components of the client

; Characteristics thereof

H04N5/44 takes precedence

H04N21/42607

for processing the incoming bitstream

H04N21/42615

involving specific demultiplexing arrangements

H04N21/42623

involving specific decryption arrangements

H04N21/4263

involving specific tuning arrangements, e.g. two tuners

H04N21/42638

involving a hybrid front-end, e.g. analog and digital tuners

H04N21/42646

for reading from or writing on a non-volatile solid state storage medium, e.g. DVD, CD-ROM

H04N21/42653

for processing graphics

H04N21/42661

for reading from or writing on a magnetic storage medium, e.g. hard disk drive

H04N21/42669

the medium being removable

H04N21/42676

for modulating an analogue carrier signal to encode digital information or demodulating it to decode digital information, e.g. ADSL or cable modem

H04N21/42684

Client identification by a unique number or address, e.g. serial number, MAC address, socket ID network arrangements, protocols or services for addressing or naming H04L61/00

H04N21/42692

for reading from or writing on a volatile storage medium, e.g. Random Access Memory [RAM]

H04N21/43

Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream

Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock

Client middleware

real-time communication protocols in data switching networks H04L65/00

H04N21/4302

Content synchronisation processes, e.g. decoder synchronisation

H04N21/4305

Synchronising client clock from received content stream, e.g. locking decoder clock with encoder clock, extraction of the PCR packets arrangements for synchronising receiver with transmitter by comparing receiver clock with transmitter clock H04L7/0012; arrangements for synchronising receiver with transmitter wherein the receiver takes measures against momentary loss of synchronisation H04L7/0083

H04N21/4307

Synchronising the rendering of multiple content streams or additional data on devices, e.g. synchronisation of audio on a mobile phone with the video output on the TV screen

H04N21/43072

of multiple content streams on the same device

H04N21/43074

of additional data with content streams on the same device, e.g. of EPG data or interactive icon with a TV program

H04N21/43076

of the same content streams on multiple devices, e.g. when family members are watching the same movie on different devices

H04N21/43078

for seamlessly watching content streams when changing device, e.g. when watching the same program sequentially on a TV and then on a tablet

H04N21/43079

of additional data with content streams on multiple devices

H04N21/431

Generation of visual interfaces

for content selection or interaction

Content or additional data rendering

H04N21/4312

involving specific graphical features, e.g. screen layout, special fonts or colors, blinking icons, highlights or animations

H04N21/4314

for fitting data in a restricted space on the screen, e.g. EPG data in a rectangular grid

H04N21/4316

for displaying supplemental content in a region of the screen, e.g. an advertisement in a separate window

H04N21/4318

by altering the content in the rendering process, e.g. blanking, blurring or masking an image region image enhancement or restoration in general G06T5/00

H04N21/432

Content retrieval operation from a local storage medium, e.g. hard-disk

details of retrieval of video data and associated meta data in video databases G06F16/739

H04N21/4325

by playing back content from the storage medium reproduction of recorded television signals H04N5/76; reproduction of recorded television signals H04N9/79

H04N21/433

Content storage operation, e.g. storage operation in response to a pause request, caching operations

H04N21/4331

Caching operations, e.g. of an advertisement for later insertion during playback

H04N21/4332

by placing content in organized collections, e.g. local EPG data repository interfaces, Database management systems or updating for information retrieval G06F16/23; details of retrieval of video data and associated meta data in video database G06F16/739

H04N21/4333

Processing operations in response to a pause request

H04N21/4334

Recording operations recording of a television signal H04N5/76; arrangements for recording or accumulating broadcast information or broadcast-related information H04H60/27

H04N21/4335

Housekeeping operations, e.g. prioritizing content for deletion because of storage space restrictions

storage management, e.g. defragmentation G06F3/0604; unloading stored programs G06F9/445; storage management in file systems G06F16/10; buffering arrangements in a network node or in an end terminal in packet networks H04L49/90

H04N21/434

Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream

Remultiplexing of multiplex streams

Extraction or processing of SI

Disassembling of packetised elementary stream

demultiplexing of data packets for data networks, e.g. RTP/UDP H04L65/00

H04N21/4341

Demultiplexing of audio and video streams

H04N21/4342

Demultiplexing isochronously with video sync, e.g. according to bit-parallel or bit-serial interface formats, as SDI

H04N21/4343

Extraction or processing of packetized elementary streams [PES]

H04N21/4344

Remultiplexing of multiplex streams, e.g. by modifying time stamps or remapping the packet identifiers

H04N21/4345

Extraction or processing of SI, e.g. extracting service information from an MPEG stream

H04N21/4346

involving stuffing data, e.g. packets or bytes synchronisation arrangements in time-division multiplex systems with different or fluctuating information rates H04J3/073

H04N21/4347

Demultiplexing of several video streams

H04N21/4348

Demultiplexing of additional data and video streams

H04N21/4349

by extracting from data carousels, e.g. extraction of software modules from a DVB carousel

H04N21/435

Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream

H04N21/4351

involving reassembling additional data, e.g. rebuilding an executable program from recovered modules

H04N21/4353

involving decryption of additional data arrangements using cryptography for the use of broadcast information or broadcast-related information H04H60/23

H04N21/4355

involving reformatting operations of additional data, e.g. HTML pages on a television screen optimising the visualization of content for information retrieval from the Internet G06F16/9577; adaptation of message content in packet-switching networks H04L51/066; media handling at the source in data packet switching networks H04L65/764

H04N21/4356

by altering the spatial resolution, e.g. to reformat additional data on a handheld device, attached to the STB

H04N21/4358

for generating different versions, e.g. for different peripheral devices

H04N21/436

Interfacing a local distribution network, e.g. communicating with another STB

or one or more peripheral devices

inside the home

H04N21/43607

Interfacing a plurality of external cards, e.g. through a DVB Common Interface [DVB-CI]

H04N21/43615

Interfacing a Home Network, e.g. for connecting the client to a plurality of peripherals home Audio Video Interoperability [HAVI] data switching networks H04L12/2805

H04N21/43622

Interfacing an external recording device

H04N21/4363

Adapting the video

or multiplex

stream to a specific local network, e.g. a IEEE 1394 or Bluetooth® network

H04N21/43632

involving a wired protocol, e.g. IEEE 1394 high-speed IEEE 1394 serial bus H04L12/40052

H04N21/43635

HDMI

H04N21/43637

involving a wireless protocol, e.g. Bluetooth, RF or wireless LAN [IEEE 802.11] arrangements for wireless networking or broadcasting of information in indoor or near-field type systems H04B10/114

H04N21/4367

Establishing a secure communication between the client and a peripheral device or smart card

H04N21/437

Interfacing the upstream path of the transmission network, e.g. for transmitting client requests to a VOD server

flow control in data networks H04L47/10; streaming protocols, e.g. RTP or RTCP, H04L65/65; scheduling or organising the servicing of application requests in data packet switching networks H04L67/60

H04N21/438

Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving MPEG packets from an IP network

transmission of MPEG streams over ATM H04L12/5601; flow control in data networks H04L47/10; real-time communication protocols in data switching networks H04L65/00

H04N21/4381

Recovering the multiplex stream from a specific network, e.g. recovering MPEG packets from ATM cells transmission of MPEG streams over ATM H04L12/5601

H04N21/4382

Demodulation or channel decoding, e.g. QPSK demodulation analog front ends or means for connecting modulators, demodulators or transceivers to a transmission line H04L27/0002

H04N21/4383

Accessing a communication channel

H04N21/4384

involving operations to reduce the access time, e.g. fast-tuning for reducing channel switching latency

H04N21/4385

Multiplex stream processing, e.g. multiplex stream decrypting

H04N21/43853

involving multiplex stream decryption arrangements using cryptography for the use of broadcast information or broadcast-related information H04H60/23

H04N21/43856

by partial decryption, e.g. decrypting a multiplex stream that has been partially encrypted

H04N21/439

Processing of audio elementary streams

H04N21/4392

involving audio buffer management

H04N21/4394

involving operations for analysing the audio stream, e.g. detecting features or characteristics in audio streams arrangements characterised by components specially adapted for monitoring, identification or recognition of audio in broadcast systems H04H60/58

H04N21/4396

by muting the audio signal

H04N21/4398

involving reformatting operations of audio signals details of audio signal transcoding G10L19/173

H04N21/44

Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs

H04N21/44004

involving video buffer management, e.g. video decoder buffer or video display buffer

H04N21/44008

involving operations for analysing video streams, e.g. detecting features or characteristics in the video stream arrangements characterised by components specially adapted for monitoring, identification or recognition of video in broadcast systems H04H60/59

H04N21/44012

involving rendering scenes according to scene graphs, e.g. MPEG-4 scene graphs

H04N21/44016

involving splicing one content stream with another content stream, e.g. for substituting a video clip

H04N21/4402

involving reformatting operations of video signals for household redistribution, storage or real-time display

details of conversion of video standards at pixel level H04N7/01; video transcoding H04N19/40; adapting incoming signals to the display format of the display terminal G09G5/005; media handling at the source in data packet switching networks H04L65/764

H04N21/440209

for formatting on an optical medium, e.g. DVD

H04N21/440218

by transcoding between formats or standards, e.g. from MPEG-2 to MPEG-4 conversion of standards in analogue television systems H04N7/01

H04N21/440227

by decomposing into layers, e.g. base layer and one or more enhancement layers

H04N21/440236

by media transcoding, e.g. video is transformed into a slideshow of still pictures, audio is converted into text

H04N21/440245

the reformatting operation being performed only on part of the stream, e.g. a region of the image or a time segment

H04N21/440254

by altering signal-to-noise parameters, e.g. requantization

H04N21/440263

by altering the spatial resolution, e.g. for displaying on a connected PDA

H04N21/440272

for performing aspect ratio conversion

H04N21/440281

by altering the temporal resolution, e.g. by frame skipping television signal recording using magnetic recording on tape for reproducing at a rate different from the recording rate H04N5/783

H04N21/44029

for generating different versions

H04N21/4405

involving video stream decryption

H04N21/44055

by partially decrypting, e.g. decrypting a video stream that has been partially encrypted

H04N21/4408

involving video stream encryption, e.g. re-encrypting a decrypted video stream for redistribution in a home network

H04N21/441

Acquiring end-user identification

, e.g. using personal code sent by the remote control or by inserting a card

H04N21/4415

using biometric characteristics of the user, e.g. by voice recognition or fingerprint scanning

cryptography using biological data H04L9/3231; authentication in networks using biometric H04L63/0861

H04N21/442

Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk

arrangements for monitoring broadcast services or broadcast-related services H04H60/29; arrangements for identifying or recognising characteristics with a direct linkage to broadcast information H04H60/35; monitoring of user activities for profile generation for accessing a video database G06F16/739; monitoring in wireless networks H04W24/00

H04N21/44204

Monitoring of content usage, e.g. the number of times a movie has been viewed, copied or the amount which has been watched monitoring of user activities for profile generation for accessing a video database G06F16/739; protecting generic digital content where the protection is independent of the precise nature of the content G06F21/10; arrangements for monitoring the use made of the broadcast services in broadcast systems H04H60/31

H04N21/44209

Monitoring of downstream path of the transmission network originating from a server, e.g. bandwidth variations of a wireless network arrangements for maintenance or administration in data switching networks involving bandwidth and capacity management H04L41/0896

H04N21/44213

Monitoring of end-user related data arrangements for monitoring the users' behaviour or opinions in broadcast systems H04H60/33

H04N21/44218

Detecting physical presence or behaviour of the user, e.g. using sensors to detect if the user is leaving the room or changes his face expression during a TV program methods or arrangements for recognising human body or animal bodies or body parts G06V40/10; methods or arrangements for acquiring or recognising human faces, facial parts, facial sketches, facial expressions G06V40/16; methods or arrangements for recognising movements or behaviour G06V40/20; arrangements for identifying users in broadcast systems H04H60/45

H04N21/44222

Analytics of user selections, e.g. selection of programs or purchase activity monitoring of user selections in data processing systems G06F11/34; arrangements for monitoring the user's behaviour or opinions in broadcast systems H04H60/33

H04N21/44224

Monitoring of user activity on external systems, e.g. Internet browsing

H04N21/44226

on social networks

H04N21/44227

Monitoring of local network, e.g. connection or bandwidth variations; Detecting new devices in the local network configuring of peripheral devices in general G06F9/4411; monitoring connectivity in data switched networks H04L43/0811

H04N21/44231

Monitoring of peripheral device or external card, e.g. to detect processing problems in a handheld device or the failure of an external recording device configuring of peripheral devices in general G06F9/4411; reporting information sensed by appliance or service execution status of appliance services in a home automation network H04L12/2823; monitoring the status of connected device in data switched networks H04L43/0817

H04N21/44236

Monitoring of piracy processes or activities protecting computer platforms against harmful, malicious or unexpected behaviour or activities using intrusion detection and counter measures G06F21/566; computer virus detection and handling G06F21/56

H04N21/4424

Monitoring of the internal components or processes of the client device, e.g. CPU or memory load, processing speed, timer, counter or percentage of the hard disk space used error monitoring in general G06F11/30; arrangements for monitoring conditions of receiving stations in broadcast systems H04H60/32; diagnosis, testing or measuring for television receivers H04N17/04

H04N21/44245

Monitoring the upstream path of the transmission network, e.g. its availability, bandwidth

H04N21/4425

Monitoring of client processing errors or hardware failure

H04N21/443

OS processes, e.g. booting an STB, implementing a Java virtual machine in an STB or power management in an STB

H04N21/4431

characterized by the use of Application Program Interface [API] libraries

H04N21/4432

Powering on the client, e.g. bootstrap loading using setup parameters being stored locally or received from the server resetting in general G06F1/14; program loading or initiating in general G06F9/445; bootstrapping in general G06F9/4401; secure boots of computer platforms G06F21/57

H04N21/4433

Implementing client middleware, e.g. Multimedia Home Platform [MHP]

H04N21/4435

Memory management allocation of memory to service a request G06F9/5016; addressing or allocating within memory systems or architectures G06F12/02

H04N21/4436

Power management, e.g. shutting down unused components of the receiver power management in computer systems G06F1/3203; hibernate or awake process in computer systems G06F9/4418

H04N21/4437

Implementing a Virtual Machine [VM] virtual machines in general G06F9/45533

H04N21/4438

Window management, e.g. event handling following interaction with the user interface

H04N21/45

Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts

H04N21/4508

Management of client data or end-user data

H04N21/4516

involving client characteristics, e.g. Set-Top-Box type, software version or amount of memory available

H04N21/4518

involving characteristics of one or more peripherals, e.g. peripheral type, software version, amount of memory available or display capabilities

H04N21/4524

involving the geographical location of the client retrieval from the Internet by querying based on geographical locations G06F16/9537; systems specially adapted for using geographical information in broadcast systems H04H60/70; protocols in which the network application is adapted for the location of the user terminal in communication control or processing H04L67/52; services making use of the location of users or terminals in wireless networks H04W4/02; locating users or terminals in wireless networks H04W64/00

H04N21/4532

involving end-user characteristics, e.g. viewer profile, preferences monitoring of user activities for profile generation for accessing a video database G06F16/739; user profiles in network data switching protocols H04L67/306; processing of user preferences or user profiles in wireless networks H04W8/18

H04N21/454

Content

or additional data

filtering, e.g. blocking advertisements

H04N21/4542

Blocking scenes or portions of the received content, e.g. censoring scenes

H04N21/4545

Input to filtering algorithms, e.g. filtering a region of the image

H04N21/45452

applied to an object-based stream, e.g. MPEG-4 streams

H04N21/45455

applied to a region of the image

H04N21/45457

applied to a time segment

H04N21/458

Scheduling content for creating a personalised stream, e.g. by combining a locally stored advertisement with an incoming stream

Updating operations, e.g. for OS modules

; time-related management operations arrangements for replacing or switching information during the broadcast or during the distribution H04H20/10

H04N21/4583

Automatically resolving scheduling conflicts, e.g. when a recording by reservation has been programmed for two programs in the same time slot

H04N21/4586

Content update operation triggered locally, e.g. by comparing the version of software modules in a DVB carousel to the version stored locally deployment, distribution, installation, update of software G06F8/65; error detection or correction of the data by redundancy during software upgrading G06F11/1433; arrangements for updating broadcast information or broadcast-related information H04H60/25

H04N21/462

Content or additional data management, e.g. creating a master electronic program guide from data received from the Internet and a Head-end, controlling the complexity of a video stream by scaling the resolution or bit-rate based on the client capabilities

H04N21/4621

Controlling the complexity of the content stream or additional data, e.g. lowering the resolution or bit-rate of the video stream for a mobile client with a small screen arrangements for using the results of monitoring on user's side in broadcast systems H04H60/65; flow control in packet networks H04L47/10

H04N21/4622

Retrieving content or additional data from different sources, e.g. from a broadcast channel and the Internet web site content organization and management for information retrieval from the Internet G06F16/958; transmission by internet of broadcast information H04H60/82; stock exchange data over packet-switching network H04L12/1804; push services including data channel over packet-switching network H04L12/1859

H04N21/4623

Processing of entitlement messages, e.g. ECM [Entitlement Control Message] or EMM [Entitlement Management Message]

arrangements for conditional access to broadcast information or to broadcast-related services H04H60/14

H04N21/4627

Rights management

associated to the content security in data switching network management H04L41/28; security management or policies for network security H04L63/20; access security in wireless networks H04W12/08

H04N21/466

Learning process for intelligent management, e.g. learning user preferences for recommending movies

services using the results of monitoring in broadcast systems H04H60/61

H04N21/4661

Deriving a combined profile for a plurality of end-users of the same client, e.g. for family members within a home user profiles in network data switching protocols H04L67/306

H04N21/4662

characterized by learning algorithms

H04N21/4663

involving probabilistic networks, e.g. Bayesian networks

H04N21/4665

involving classification methods, e.g. Decision trees

H04N21/4666

using neural networks, e.g. processing the feedback provided by the user

H04N21/4667

Processing of monitored end-user data, e.g. trend analysis based on the log file of viewer selections

H04N21/4668

for recommending content, e.g. movies

H04N21/47

End-user applications

H04N21/472

End-user interface for requesting content, additional data or services

End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content

end-user interfaces for retrieving video data from a database G06F16/739; network services for supporting unicast streaming H04L65/612

H04N21/47202

for requesting content on demand, e.g. video on demand

H04N21/47205

for manipulating displayed content, e.g. interacting with MPEG-4 objects, editing locally

H04N21/47208

for requesting near-video-on-demand content

H04N21/47211

for requesting pay-per-view content payment schemes payment architectures or payment protocols G06Q20/00, G07F

H04N21/47214

for content reservation or setting reminders; for requesting event notification, e.g. of sport results or stock market stock exchange data over packet-switching network H04L12/1804; push services over packet-switching network H04L12/1859; notification of incoming messages in packet switching networks H04L51/224

H04N21/47217

for controlling playback functions for recorded or on-demand content, e.g. using progress bars, mode or play-point indicators or bookmarks specific graphical features in visual interfaces H04N21/4312

H04N21/4722

for requesting additional data associated with the content

H04N21/4725

using interactive regions of the image, e.g. hot spots

details of information retrieval from the Internet by using URLs G06F16/955; processing chained hypermedia data for information retrieval G06F16/94

H04N21/4728

for selecting a Region Of Interest [ROI], e.g. for requesting a higher resolution version of a selected region

H04N21/475

End-user interface for inputting end-user data, e.g. personal identification number [PIN], preference data

H04N21/4751

for defining user accounts, e.g. accounts for children

H04N21/4753

for user identification, e.g. by entering a PIN or password cryptographic authentication protocols H04L9/32; networks authentication protocols H04L63/08

H04N21/4755

for defining user preferences, e.g. favourite actors or genre retrieval personalisation and generation of user profiles for the retrieval of video data G06F16/739; user profiles in network data switching protocols H04L67/306

H04N21/4756

for rating content, e.g. scoring a recommended movie

H04N21/4758

for providing answers, e.g. voting

H04N21/478

Supplemental services, e.g. displaying phone caller identification, shopping application

H04N21/47805

Electronic banking banking in general G06Q30/02

H04N21/4781

Games

H04N21/47815

Electronic shopping payment schemes, payment architectures or payment protocols for electronic shopping systems G06Q20/12

H04N21/4782

Web browsing

, e.g. WebTV

H04N21/4784

receiving rewards

H04N21/4786

e-mailing

message switching systems, e.g. electronic mail systems H04L51/00

H04N21/4788

communicating with other users, e.g. chatting

arrangements for providing for computer conferences, e.g. chat rooms, to substation in data switching networks H04L12/1813; distributed application using peer-to-peer [P2P] networks H04L67/104

H04N21/482

End-user interface for program selection

broadcast systems using EPGs H04H60/72

H04N21/4821

using a grid, e.g. sorted out by channel and broadcast time

H04N21/4823

using a channel name

H04N21/4825

using a list of items to be played back in a given order, e.g. playlists

H04N21/4826

using recommendation lists, e.g. of programs or channels sorted out according to their score

H04N21/4828

for searching program descriptors retrieval of video data G06F16/739

H04N21/485

End-user interface for client configuration

H04N21/4852

for modifying audio parameters, e.g. switching between mono and stereo

H04N21/4854

for modifying image parameters, e.g. image brightness, contrast

H04N21/4856

for language selection, e.g. for the menu or subtitles

H04N21/4858

for modifying screen layout parameters, e.g. fonts, size of the windows

H04N21/488

Data services, e.g. news ticker

systems specially adapted for using meteorological information in broadcast systems H04H60/71

H04N21/4882

for displaying messages, e.g. warnings, reminders arrangements for providing short real-time information to substation in data switching networks H04L12/1895

H04N21/4884

for displaying subtitles

H04N21/4886

for displaying a ticker, e.g. scrolling banner for news, stock exchange, weather data

H04N21/4888

for displaying teletext characters

H04N21/60

Network structure or processes for video distribution between server and client or between remote clients

Control signalling between clients, server and network components

Transmission of management data between server and client

, e.g. sending from server to client commands for recording incoming content stream

Communication details between server and client

H04N21/61

Network physical structure

Signal processing H04B takes precedence

H04N21/6106

specially adapted to the downstream path of the transmission network

H04N21/6112

involving terrestrial transmission, e.g. DVB-T

H04N21/6118

involving cable transmission, e.g. using a cable modem

H04N21/6125

involving transmission via Internet transmission by internet of broadcast information H04H60/82

H04N21/6131

involving transmission via a mobile phone network wireless downlink channel access H04W74/006

H04N21/6137

involving transmission via a telephone network, e.g. POTS

H04N21/6143

involving transmission via a satellite

H04N21/615

Signal processing at physical level signal processing in analog two-way television systems H04N7/173

H04N21/6156

specially adapted to the upstream path of the transmission network

H04N21/6162

involving terrestrial transmission, e.g. DVB-T

H04N21/6168

involving cable transmission, e.g. using a cable modem

H04N21/6175

involving transmission via Internet broadcast-related systems characterised by the transmission system being the Internet H04H60/82

H04N21/6181

involving transmission via a mobile phone network arrangements for providing broadcast or conference services to substation in data switching networks in combination with wireless systems H04L12/189; wireless uplink channel access H04W74/004

H04N21/6187

involving transmission via a telephone network, e.g. POTS

H04N21/6193

involving transmission via a satellite arrangements for data linking, networking or transporting, or for controlling an end to end session in a satellite broadcast system H04B7/18526

H04N21/63

Control signaling