| Patents for H04N 21 - Selective content distribution, e.g. interactive television, vod [video on demand] (56,445) |
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| 03/12/1997 | EP0762768A2 Recording and reproducing video data to and from record media |
| 03/12/1997 | EP0762763A2 Video messaging arrangement |
| 03/12/1997 | EP0762755A1 Data transmission device |
| 03/12/1997 | EP0762686A2 System and method for scheduled delivery of a software program over a cable network |
| 03/12/1997 | EP0762417A2 Signal recording and reproducing, signal record media and signal transmission and reception |
| 03/12/1997 | EP0761065A1 Video clip program guide |
| 03/12/1997 | EP0761064A1 Method and apparatus for processing a conditional access program guide as for a satellite tv service |
| 03/12/1997 | EP0761063A1 Television signal activated interactive smart card system |
| 03/12/1997 | EP0761047A1 Apparatus and method for generating product coupons in response to televised offers |
| 03/12/1997 | EP0746941A4 Interactive television security through transaction time stamping |
| 03/12/1997 | EP0740884A4 Transaction based interactive television system |
| 03/12/1997 | CN1145154A Buffer management in variable Bit-rate compression systems |
| 03/12/1997 | CN1145153A Buffering for digital video signal encoders using joint Bit-rate control |
| 03/12/1997 | CN1145152A Subtitling transmission system |
| 03/12/1997 | CN1145149A Data level selection for multilevel VSB transmission system |
| 03/11/1997 | US5611038 Audio/video transceiver provided with a device for reconfiguration of incompatibly received or transmitted video and audio information |
| 03/11/1997 | US5610916 Shared receiving systems utilizing telephone cables as video drops |
| 03/06/1997 | WO1997008892A2 Information handling for interactive apparatus |
| 03/06/1997 | WO1997008845A1 Compressive communication and storage system |
| 03/06/1997 | WO1997002701A3 Transmission of menus to a receiver |
| 03/06/1997 | DE19635116A1 Video communication system generating frame sequence |
| 03/06/1997 | CA2229921A1 Compressive communication and storage system |
| 03/04/1997 | US5608888 Method and apparatus for mapping data of a 2-dimensional space from a linearly addressed memory system |
| 03/04/1997 | US5608839 Sound-synchronized video system |
| 03/04/1997 | US5608653 For a distribution data processing system |
| 03/04/1997 | US5608448 Hybrid architecture for video on demand server |
| 02/27/1997 | WO1997007633A1 Data processing system |
| 02/27/1997 | WO1997007606A1 Dynamic allocation of bandwidth for transmission of audio signals and a video signal |
| 02/27/1997 | WO1997002700A3 Transmission of graphic images |
| 02/27/1997 | CA2229477A1 Video storage unit architecture |
| 02/26/1997 | EP0759676A2 Scheduling videos in a video-on-demand system |
| 02/26/1997 | EP0759667A2 Statistical multiplexing |
| 02/26/1997 | EP0759252A1 Method and apparatus for operating a multicast system on an unreliable network |
| 02/25/1997 | US5606611 Receiving station management apparatus |
| 02/25/1997 | US5606369 Buffering for digital video signal encoders using joint bit-rate control |
| 02/25/1997 | US5606362 Variable bit rate audio information transmitting apparatus, and method therefor |
| 02/25/1997 | US5606359 Video on demand system with multiple data sources configured to provide vcr-like services |
| 02/23/1997 | CA2183813A1 Statistical multiplexing |
| 02/19/1997 | EP0758510A1 Method, rate controller, and system for preventing overflow and underflow of a decoder buffer |
| 02/19/1997 | EP0758509A1 Method and apparatus for preventing overflow and underflow of an encoder buffer in a video compression system |
| 02/19/1997 | EP0758506A1 An improved modem to support multiple site call conferenced data communications |
| 02/19/1997 | CN1143299A Presision broadcasting of compound items |
| 02/18/1997 | US5604604 Multiple head signal distribution system |
| 02/18/1997 | US5604542 Using the vertical blanking interval for transporting electronic coupons |
| 02/13/1997 | WO1997005720A2 Cryptographic system with concealed work factor |
| 02/13/1997 | WO1996042151A3 Steganographic method and device |
| 02/12/1997 | EP0757876A1 Method and apparatus for graceful degradation of image playback frames rates |
| 02/12/1997 | EP0757873A1 Video mix program guide |
| 02/12/1997 | CN1142717A Apparatus for remedying errors in head end monitoring block, and control method therefor |
| 02/11/1997 | US5603016 Method for synchronizing playback of an audio track to a video track |
| 02/11/1997 | US5602920 Combined DCAM and transport demultiplexer |
| 02/06/1997 | WO1997004596A2 Method and apparatus for frame accurate access of digital audio-visual information |
| 02/06/1997 | WO1997004594A1 Data transmission system |
| 02/06/1997 | WO1997004585A2 Method of transmitting and receiving compressed television signals |
| 02/06/1997 | WO1997004584A2 Method of receiving compressed video signals |
| 02/06/1997 | WO1997004545A1 Method of determining a receiver time at the moment of reception of a transmission time mark in received data elements |
| 02/05/1997 | EP0757495A1 Generator of clock signals for the synchronization of a system for processing digital data packets |
| 02/05/1997 | EP0757492A2 Apparatus and method for encoding and decoding digital video data |
| 02/05/1997 | EP0757488A2 A multimedia information processing apparatus |
| 02/05/1997 | EP0756801A1 Conditional access information arrangement |
| 02/05/1997 | EP0756800A1 System for transmitting a plurality of video programs simultaneously through a transmission channel |
| 02/05/1997 | EP0756797A1 Method and apparatus for providing interactive electronic programming guide |
| 02/05/1997 | EP0756793A1 Complexity determining apparatus |
| 02/05/1997 | EP0756790A1 Asynchronous control signal generating apparatus |
| 02/05/1997 | EP0756789A1 Complexity determining apparatus |
| 02/05/1997 | EP0756788A1 Parameter sampling apparatus |
| 02/04/1997 | US5600844 Single chip integrated circuit system architecture for document installation set computing |
| 02/04/1997 | US5600775 Method and apparatus for annotating full motion video and other indexed data structures |
| 02/04/1997 | US5600677 Trellis coded modulation system for digital television signal |
| 02/04/1997 | US5600378 Logical and composite channel mapping in an MPEG network |
| 02/04/1997 | US5600366 Methods and apparatus for digital advertisement insertion in video programming |
| 02/04/1997 | US5600365 Multiple audio and video signal providing apparatus |
| 01/30/1997 | WO1997003518A1 Apparatus for decoding video signals encoded in different formats |
| 01/30/1997 | WO1997003509A1 Apparatus for demodulating and decoding video signals |
| 01/29/1997 | EP0756424A2 Image transmission system and method |
| 01/29/1997 | EP0755608A1 A distance learning system providing individual television participation, audio responses, and memory for every student |
| 01/29/1997 | EP0755604A1 Arrangement and method for transmitting and receiving video signals |
| 01/29/1997 | CN1141708A Consumer interface for digital TV system |
| 01/29/1997 | CN1141707A Digital TV system channel guid having ltd. lifetime |
| 01/28/1997 | US5598444 Sync detecting apparatus and method thereof |
| 01/28/1997 | US5598222 Method and apparatus for decoding multiple video bitstreams using a common memory |
| 01/23/1997 | WO1997002701A2 Transmission of menus to a receiver |
| 01/23/1997 | WO1997002700A2 Transmission of graphic images |
| 01/23/1997 | CA2198894A1 Transmission of menus to a receiver |
| 01/22/1997 | EP0754388A1 Interactive scroll program guide |
| 01/22/1997 | EP0754378A1 High speed bidirectional digital cable transmission system |
| 01/22/1997 | CN1141108A Trellis coded modulation system for HDTV |
| 01/22/1997 | CN1141107A Data frame format for variable size data constellations |
| 01/22/1997 | CN1141106A Multimedia multiplexing device and method using dynamic packet segmentation |
| 01/22/1997 | CN1140956A Decoder for compressed and multiplexed video and audio data |
| 01/21/1997 | US5596581 Recording and reproducing an MPEG information signal using tagged timing information |
| 01/21/1997 | US5596565 Method and apparatus for recording MPEG-compressed video data and compressed audio data on a disk |
| 01/21/1997 | US5596564 Information recording medium and apparatus and method for recording and reproducing information |
| 01/21/1997 | US5596420 Auto latency correction method and apparatus for MPEG playback system |
| 01/21/1997 | US5596373 Method and apparatus for providing program oriented information in a multiple station broadcast system |
| 01/21/1997 | US5596362 Low bit rate audio-visual communication having improved face and lip region detection |
| 01/16/1997 | WO1997001930A1 Bandwidth efficient communication of user data in digital television data stream |
| 01/15/1997 | EP0753967A2 Method and apparatus for decoding a video data stream |
| 01/15/1997 | EP0753965A2 Service for transmitting a videofilm |
| 01/15/1997 | EP0753964A1 Procedure and device for recording and reproducing, comprising a high capacity recording carrier |