| Patents for H04N 21 - Selective content distribution, e.g. interactive television, vod [video on demand] (56,445) |
|---|
| 05/14/1997 | EP0772927A1 Method for dynamically allocating communication channel bandwidth between competing applications |
| 05/14/1997 | EP0772857A1 Education and entertainment device with dynamic configuration and operation |
| 05/14/1997 | EP0772856A1 Dual channel advertising referencing vehicle location |
| 05/14/1997 | CN1149953A Arrangement for decoding digital video signals |
| 05/14/1997 | CN1149950A Arrangement and method for transmitting and receiving video signals |
| 05/13/1997 | US5630119 System and method for displaying program listings in an interactive electronic program guide |
| 05/13/1997 | US5630007 Client-server system with parity storage |
| 05/13/1997 | US5630005 Method for seeking to a requested location within variable data rate recorded information |
| 05/13/1997 | US5629958 Data frame structure and synchronization system for digital television signal |
| 05/13/1997 | US5629733 Electronic television program guide schedule system and method with display and search of program listings by title |
| 05/13/1997 | US5629732 Viewer controllable on-demand multimedia service |
| 05/09/1997 | WO1997016925A1 Output switching for load levelling across multiple service areas |
| 05/09/1997 | WO1997016895A1 Constant bit rate transport in a contention based medium access control |
| 05/09/1997 | CA2231391A1 Output switching for load levelling across multiple service areas |
| 05/07/1997 | EP0771468A1 Multiple user data storage, retrieval and distribution system |
| 05/07/1997 | EP0532503B1 Cable television radio frequency subscriber data transmission apparatus and calibration method |
| 05/07/1997 | DE19540741A1 Error-free transmission method for time-critical digital signal with variable bit rate |
| 05/06/1997 | US5627692 Recording and reproducing apparatus for reproducing time-base compressed signals dependent on the time-base compression implemented |
| 05/06/1997 | US5627656 Motion picture reproducing apparatus in synchronism with sound signal |
| 05/06/1997 | US5627590 Image encoding and transmitting system |
| 05/06/1997 | US5627549 Dual channel advertising referencing vehicle location |
| 05/02/1997 | EP0758510A4 Method, rate controller, and system for preventing overflow and underflow of a decoder buffer |
| 05/02/1997 | EP0758509A4 Method and apparatus for preventing overflow and underflow of an encoder buffer in a video compression system |
| 05/01/1997 | WO1997016023A1 Staggered stream support for video on demand |
| 04/29/1997 | US5625864 Interactive digital video services system with store and forward capabilities |
| 04/29/1997 | US5625693 Apparatus and method for authenticating transmitting applications in an interactive TV system |
| 04/29/1997 | US5625422 Method for channel selection and tuning based upon set channel positions |
| 04/29/1997 | US5625418 Method and arrangement for inserting frame markers in data for transmission and for retrieving the data with the aid of such frame markers |
| 04/23/1997 | EP0769876A2 Cable television data path error analyser |
| 04/22/1997 | US5623613 System for displaying programming information |
| 04/22/1997 | US5623490 Method and apparatus for multiple media digital communication system |
| 04/22/1997 | US5623483 Synchronization system for networked multimedia streams |
| 04/22/1997 | US5623423 Apparatus and method for video decoding |
| 04/22/1997 | US5623308 Multiple resolution, multi-stream video system using a single standard coder |
| 04/17/1997 | WO1997014149A1 Multiplex signal decoding |
| 04/17/1997 | WO1997004596A3 Method and apparatus for frame accurate access of digital audio-visual information |
| 04/16/1997 | EP0768010A1 Transport processor interface and video recorder/playback apparatus for a digital television system |
| 04/16/1997 | EP0768009A1 Transport processor interface for a digital television system |
| 04/16/1997 | CN1147658A Coding and decoding system of image information |
| 04/16/1997 | CN1147654A Apparatus and method for executing game program having advertisements therein |
| 04/15/1997 | US5621799 Scrambled transmission system |
| 04/15/1997 | US5621793 TV set top box using GPS |
| 04/15/1997 | US5621772 Hysteretic synchronization system for MPEG audio frame decoder |
| 04/15/1997 | US5621579 Method for selectively playing back programs recorded on a video tape |
| 04/15/1997 | US5621538 Method for synchronizing computerized audio output with visual output |
| 04/15/1997 | US5621469 Scan converting apparatus for transferring subtitles on a screen |
| 04/15/1997 | US5621456 Methods and apparatus for audio-visual interface for the display of multiple program categories |
| 04/15/1997 | CA2061564C Method and apparatus for transmitting time-varying picture signals |
| 04/10/1997 | WO1997013371A1 Compressed video data processing with conversion of image compression format |
| 04/10/1997 | WO1997013348A2 Block coding for digital video transmission |
| 04/10/1997 | WO1997013207A1 Interactive theater and feature presentation system |
| 04/10/1997 | CA2790911A1 Displaying information responsive to selecting an advertisement in an electronic program guide |
| 04/10/1997 | CA2763736A1 Systems and methods for displaying program data relating to a show |
| 04/10/1997 | CA2763734A1 Accessing products and/or services using a viewer interactive device |
| 04/10/1997 | CA2763665A1 Systems and methods for searching for program listings using a media guidance application |
| 04/09/1997 | EP0767555A2 Method and apparatus for reducing data delay within a multi-channel shared-circuit data processing environment |
| 04/08/1997 | US5619534 Method and apparatus for reducing precoding loss when using a post-comb filtering approach to reduce co-channel interference in high definition television transmission |
| 04/08/1997 | US5619501 Conditional access filter as for a packet video signal inverse transport system |
| 04/08/1997 | US5619341 Method and apparatus for preventing overflow and underflow of an encoder buffer in a video compression system |
| 04/08/1997 | US5619337 MPEG transport encoding/decoding system for recording transport streams |
| 04/08/1997 | US5619251 Two-way CATV system and remote control system |
| 04/08/1997 | US5619249 Telecasting service for providing video programs on demand with an interactive interface for facilitating viewer selection of video programs |
| 04/08/1997 | US5619247 For use with an associated display device |
| 04/03/1997 | WO1997012486A1 Multimedia architecture for interactive advertising |
| 04/03/1997 | WO1997012342A1 System for using media content in interactive digital media program |
| 04/03/1997 | CA2233444A1 System for using media content in interactive digital media program |
| 04/02/1997 | EP0765501A1 Smart card message transfer without microprocessor intervention |
| 04/02/1997 | CN1146686A service for transmitting video film |
| 04/01/1997 | US5617571 Method for controlling power to individual audio-video units making up an audio-video system |
| 04/01/1997 | US5617565 Broadcast interactive multimedia system |
| 04/01/1997 | US5617502 System and method synchronizing audio and video digital data signals during playback |
| 04/01/1997 | US5617142 Method and apparatus for changing the compression level of a compressed digital signal |
| 03/27/1997 | WO1997008892A3 Information handling for interactive apparatus |
| 03/26/1997 | EP0764380A2 A two-way multiple access communication system, and a central station and a user station for use in such a system |
| 03/26/1997 | CN1146266A Picture information encoding/decoding system |
| 03/26/1997 | CN1146265A Method and apparatus for preventing overflow and underflow of encoder buffer in video compression system |
| 03/26/1997 | CN1146264A Method, rate controller and system for preventing overflow and underflow of decoder buffer |
| 03/26/1997 | CN1146122A Apparatus and method for authenticating transmitted applications in interative information system |
| 03/26/1997 | CN1146121A 图象传输系统 Image transmission system |
| 03/25/1997 | US5615131 System for providing closed captioning to an electronic discussion group |
| 03/25/1997 | US5614957 Digital picture-in-picture decoder |
| 03/25/1997 | US5614955 Compressed digital multi-channel video communications system having one or more auxiliary channels to accomodate high bit rates |
| 03/25/1997 | US5614952 Digital video decoder for decoding digital high definition and/or digital standard definition television signals |
| 03/25/1997 | US5614940 Method and apparatus for providing broadcast information with indexing |
| 03/20/1997 | WO1997010682A1 Upgradable on-screen display system |
| 03/20/1997 | WO1997010681A1 On-screen display timing |
| 03/20/1997 | WO1997010680A1 On-screen display insertion |
| 03/20/1997 | WO1997010679A1 Interface for digital recorder and display |
| 03/20/1997 | WO1997010678A1 Simplified input selector for video signals |
| 03/20/1997 | WO1997010674A1 Telecommunications multimedia conferencing system and method |
| 03/19/1997 | EP0763944A2 Video coder, decoder and transmission system |
| 03/19/1997 | EP0763243A1 Memory device |
| 03/19/1997 | EP0741944A4 Cable television billing method |
| 03/19/1997 | EP0555215B1 Multichannel data compressor |
| 03/18/1997 | US5613004 Steganographic method and device |
| 03/18/1997 | US5613003 Packet video signal inverse transport processor memory address circuitry |
| 03/18/1997 | US5612981 Apparatus and methods for improving timing recovery of a system clock |
| 03/18/1997 | US5612956 Reformatting of variable rate data for fixed rate communication |
| 03/18/1997 | US5612749 Apparatus and method for receiving messages from a central transmitter with a television receiver |
| 03/18/1997 | US5612730 Interactive system for a closed cable network |