| Patents for H04N 21 - Selective content distribution, e.g. interactive television, vod [video on demand] (56,445) |
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| 05/23/1995 | US5418559 Multi-channel television converter for conventional and interactive signals |
| 05/18/1995 | WO1995013681A1 Interactive information services control system |
| 05/16/1995 | US5416528 Television receiver |
| 05/16/1995 | US5416520 Multiple encoder output buffer apparatus for differential coding of video information |
| 05/11/1995 | WO1995012878A1 Portable liquid crystal display device and method for changing receivable channel of it |
| 05/09/1995 | US5414773 CATV systems |
| 05/09/1995 | US5414455 Segmented video on demand system |
| 05/04/1995 | WO1995012283A1 System and method for disk software publishers to control disk distribution |
| 05/04/1995 | WO1995012277A1 Management of channel buffer in video decoders |
| 05/04/1995 | WO1995012198A1 Recording medium which can cope with various languages and reproduction apparatus |
| 05/03/1995 | EP0651571A2 A graphics data unit for a television receiver |
| 05/03/1995 | EP0651525A2 Drop and add multiplexor for transforming and processing of a frequency multiplexed signal |
| 05/03/1995 | CA2134812A1 Graphics sub-displays for digital television receivers |
| 05/02/1995 | US5412416 Video media distribution network apparatus and method |
| 04/27/1995 | WO1995011554A1 Error detection and correction apparatus for an asynchronous transfer mode (atm) network device |
| 04/25/1995 | US5410698 Method and system for dynamic loading of software libraries |
| 04/25/1995 | US5410368 Carrier acquisition by applying substitute pilot to a synchronous demodulator during a start up interval |
| 04/25/1995 | US5410367 Television program scheduler for providing an indication to a user that a television program is about to start |
| 04/25/1995 | US5410344 Apparatus and method of selecting video programs based on viewers' preferences |
| 04/25/1995 | US5410343 Video-on-demand services using public switched telephone network |
| 04/25/1995 | US5410326 Programmable remote control device for interacting with a plurality of remotely controlled devices |
| 04/19/1995 | EP0649261A2 Image data processing and encrypting apparatus |
| 04/19/1995 | EP0649259A2 Data reproducing devices |
| 04/19/1995 | CN1101777A Managing letterbox signals with logos and closed captions |
| 04/18/1995 | US5408274 Method and apparatus for compositing compressed video data |
| 04/18/1995 | US5408259 Data modulation arrangement for selectively distributing data |
| 04/18/1995 | US5408207 Electronic device for high frequencies comprising a printed circuit and process for manufacturing such a circuit |
| 04/12/1995 | EP0648054A2 Apparatus and method for selectively viewing video information |
| 04/11/1995 | US5406625 Receiving apparatus and recording method |
| 04/05/1995 | EP0647066A2 Packet conversion apparatus and system |
| 04/04/1995 | US5404171 Method and apparatus for synchronizing digital packets of information to an arbitrary rate |
| 03/30/1995 | WO1995004431A3 System and method for storing and forwarding audio and/or visual information on demand |
| 03/29/1995 | EP0645927A1 Method and apparatus for the display and processing of teletext data |
| 03/28/1995 | US5402183 Apparatus for controlling the power to units making up and audio/video system |
| 03/22/1995 | CN1100580A Managing letterbox signals with logos |
| 03/21/1995 | US5400402 System for limiting use of down-loaded video-on-demand data |
| 03/21/1995 | US5400401 In a communications system |
| 03/21/1995 | US5400163 Multiplex digital communication system for transmitting channel identification information |
| 03/16/1995 | WO1995007592A1 A system for local processing/accessing and representation of large volumes of data |
| 03/16/1995 | WO1995007579A1 Real-time audio packet layer encoder |
| 03/14/1995 | US5398237 Acquisition and tracking of independent quadrature modulated bitstreams |
| 03/14/1995 | US5398072 Management of channel buffer in video decoders |
| 03/09/1995 | WO1995002301A3 System for multiplexed transmission of compressed video and auxiliary data |
| 03/07/1995 | US5396546 In a data communication system |
| 03/07/1995 | US5396497 Synchronization of audio/video information |
| 03/01/1995 | EP0634034A4 Method of operating a disk storage system. |
| 02/28/1995 | US5394275 Apparatus for selectively recording and reproducing two video signals having different amounts of data in each frame |
| 02/28/1995 | US5394249 Multisystem adaptable type signal processing and recording/reproducing apparatus |
| 02/22/1995 | EP0639918A1 CATV systems |
| 02/21/1995 | US5392352 Scramble detecting circuit in a satellite broadcasting receiver and scramble detecting method |
| 02/20/1995 | CA2130392A1 Catv systems |
| 02/16/1995 | WO1995005050A1 Apparatus and method for an on demand data delivery system for the preview, selection, retrieval and reproduction at a remote location of previously recorded or programmed materials |
| 02/16/1995 | WO1995005043A1 Method and apparatus for uniquely encrypting a plurality of services at a transmission site |
| 02/15/1995 | EP0639030A2 Two-way CATV system and remote control system |
| 02/14/1995 | US5389964 Broadcast channel substitution method and apparatus |
| 02/09/1995 | WO1995004431A2 System and method for storing and forwarding audio and/or visual information on demand |
| 02/08/1995 | CN1098582A Transmitting apparatus |
| 02/07/1995 | US5386717 Gas leakage testing method |
| 02/02/1995 | WO1995003670A1 Apparatus and method for producing periodic synchronization references forming a synchronization signal |
| 01/26/1995 | WO1995002945A1 Multi-standard cable television system |
| 01/26/1995 | WO1995002943A1 Television video synchronization signal monitoring system and method for cable television system |
| 01/26/1995 | WO1995002942A1 Method of and apparatus for channel mapping with relative service identification |
| 01/19/1995 | WO1995002301A2 System for multiplexed transmission of compressed video and auxiliary data |
| 01/18/1995 | EP0634872A2 Processing digital video data |
| 01/18/1995 | EP0634867A2 Compressed and coded data recording method |
| 01/18/1995 | EP0634848A1 Data transmission system for broadcast distribution in a CATV system |
| 01/18/1995 | EP0634034A1 Method of operating a disk storage system |
| 01/17/1995 | US5382983 Apparatus and method for total parental control of television use |
| 01/17/1995 | US5382970 Television viewer monitoring system including portable data meter for each viewer |
| 01/10/1995 | US5381481 Method and apparatus for uniquely encrypting a plurality of services at a transmission site |
| 01/05/1995 | WO1995001059A1 Method and apparatus for controlling an audio-visual system for selectively viewing and interacting with programs and services from a number of program/service sources |
| 01/05/1995 | WO1995001058A1 An audio-visual system for selectively viewing and interacting with programs and services from a number of program/service sources |
| 01/05/1995 | WO1995001056A1 Methods and apparatus for managing selection of audio-visual program and service offerings |
| 01/03/1995 | US5379356 Decompression processor for video applications |
| 12/27/1994 | US5377194 Multiplexed coded modulation with unequal error protection |
| 12/22/1994 | WO1994029979A1 Method and apparatus for multiple media digital communication system |
| 12/22/1994 | CA2173355A1 Method and apparatus for multiple media digital communication system |
| 12/21/1994 | EP0484423B1 Digital signal processing system |
| 12/20/1994 | US5375160 Interface apparatus for effecting captioning and communications between a telephone line and a television |
| 12/20/1994 | US5375068 Video teleconferencing for networked workstations |
| 12/20/1994 | US5374951 Method and system for monitoring television viewing |
| 12/14/1994 | EP0629087A2 Recording/reproducing apparatus and reproducing apparatus |
| 12/14/1994 | EP0628919A2 System and method for automatically correlating user preferences with electronic shopping information |
| 12/13/1994 | US5373288 Initializing terminals in a signal distribution system |
| 12/08/1994 | WO1994028679A1 An integrated video and audio signal distribution system for use on commercial aircraft and other vehicles |
| 12/07/1994 | EP0627153A1 Lower resolution hdtv receivers |
| 12/07/1994 | CN1096151A Reprogrammable terminal for suggesting programs offered on a television program delivery system |
| 12/06/1994 | US5371795 Automatic censorship of video programs |
| 12/06/1994 | US5371553 Monitor apparatus for selecting audio-visual units and operating modes from a control window |
| 12/06/1994 | US5371551 Time delayed digital video system using concurrent recording and playback |
| 12/06/1994 | US5371532 Communications architecture and method for distributing information services |
| 11/30/1994 | EP0626635A2 Improved graphical user interface with method and apparatus for interfacing to remote devices |
| 11/29/1994 | US5369704 Down-line transcription system for manipulating real-time testimony |
| 11/24/1994 | WO1994027234A1 Multimedia synchronization system |
| 11/24/1994 | WO1994027233A1 Audio synchronization system |
| 11/24/1994 | WO1994027209A1 Multimedia control system |
| 11/24/1994 | CA2139386A1 Multimedia synchronization system |
| 11/23/1994 | EP0625852A2 Managing letterbox signals with logos and closed captions |
| 11/22/1994 | US5367571 Subscriber terminal with plug in expansion card |
| 11/22/1994 | US5367329 Accounting system in network for offering video programs |