Patents
Patents for H04N 21 - Selective content distribution, e.g. interactive television, vod [video on demand] (56,445)
09/1996
09/12/1996CA2214650A1 Interactive system for a closed cable network including an internet gateway and linked services
09/11/1996EP0730802A1 System and method for simultaneously authorizing multiple virtual channels
09/11/1996EP0716795A4 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
09/11/1996EP0700568A4 Synchronizing digital audio to digital video
09/10/1996US5555308 Encryption of signals to insure viewership of commercials
09/10/1996US5555118 Method for removing and inserting optical carriers in a WDM optical communication system
09/10/1996US5555015 Communication system for a cable television system
09/06/1996WO1996027155A2 Systems and methods for secure transaction management and electronic rights protection
09/06/1996WO1996020575A3 Buffer management in variable bit-rate compression systems
09/06/1996WO1996020568A3 Buffering for digital video signal encoders using joint bit-rate control
09/06/1996CA2683230A1 Systems and methods for secure transaction management and electronic rights protection
09/04/1996EP0730380A1 Data output device and data output method
09/04/1996CN1130327A Communication control device and method for TV receiver
09/03/1996USH1589 Combined video and text data distribution system
09/03/1996US5553222 Multimedia synchronization system
09/03/1996US5553221 System and method for enabling the creation of personalized movie presentations and personalized movie collections
09/03/1996US5553064 High speed bidirectional digital cable transmission system
09/03/1996US5552837 Remote controller for scanning data and controlling a video system
09/03/1996US5552806 In a communications device
08/1996
08/29/1996WO1996026611A1 Wide angle interactive viewing of broadcast program
08/29/1996WO1996026608A2 System for transmitting a plurality of video programs simultaneously through a transmission channel
08/29/1996WO1996026605A1 Stored program pay-per-play
08/29/1996WO1996026596A1 Method, rate controller, and system for preventing overflow and underflow of a decoder buffer
08/29/1996WO1996026595A1 Method and apparatus for preventing overflow and underflow of an encoder buffer in a video compression system
08/29/1996WO1996026491A1 Multi-media server
08/28/1996EP0728398A1 Interactive information services control system
08/27/1996US5550847 Device and method of signal loss recovery for realtime and/or interactive communications
08/27/1996US5550825 Headend processing for a digital transmission system
08/27/1996US5550593 Multiplex communication system using separated and multiplexed data
08/27/1996US5550590 Bit rate controller for multiplexer of encoded video
08/27/1996US5550589 Method of adaptively multiplexing a plurality of video channel data using channel data assignment information obtained from a look-up table
08/27/1996US5550581 Low bit rate audio-visual communication system having integrated perceptual speech and video coding
08/27/1996US5550580 Low bit rate audio-visual communication system having integrated perceptual speech and video coding
08/27/1996US5550576 Method and apparatus for merging television program schedule information received from multiple television schedule information sources
08/27/1996US5550575 Viewer discretion television program control system
08/21/1996EP0727909A2 Interface for audio/video subscriber equipment and telecommunications line
08/20/1996US5548532 Apparatus and method for formulating an interactive TV signal
08/20/1996US5548346 Apparatus for integrally controlling audio and video signals in real time and multi-site communication control method
08/20/1996US5548345 Video viewing censoring supervision system
08/20/1996US5548338 Compression of an electronic programming guide
08/20/1996US5548322 Low bit rate audio-visual communication system having integrated preceptual speech and video coding
08/14/1996EP0726574A2 Apparatus and method for recording and reproducing data
08/14/1996EP0726016A1 System and method for disk software publishers to control disk distribution
08/13/1996US5546324 Video teleconferencing for networked workstations
08/08/1996WO1996024222A1 Video signal processing
08/08/1996CA2210809A1 Video signal processing
08/07/1996EP0725541A2 Image information encoding/decoding system
08/07/1996EP0725506A2 Apparatus and method for segmentation and time synchronization of the transmission of multimedia data
08/07/1996EP0724794A1 Error detection and correction apparatus for an asynchronous transfer mode (atm) network device
08/07/1996CN1128595A Method and apparatus for uniquely encrypting a plurality of services at a transmission site
08/06/1996US5544161 ATM packet demultiplexer for use in full service network having distributed architecture
08/06/1996US5543851 Method and apparatus for translating closed caption data
07/1996
07/31/1996EP0723732A1 Signal processing system
07/30/1996US5541919 Multimedia multiplexing device and method using dynamic packet segmentation
07/30/1996US5541852 Device, method and system for variable bit-rate packet video communications
07/30/1996US5541757 Optical fiber cable service system provided with video on demand service
07/30/1996US5541662 Method for providing a video display image
07/25/1996WO1996007267A3 System for processing a video signal via series-connected high speed signal processing smart cards
07/24/1996EP0723376A2 Data multiplexing and/or demultiplexing and data recording media
07/24/1996EP0723372A2 Data receiving-processing apparatus and method, and broadcasting method
07/23/1996US5539822 System and method for subscriber interactivity in a television system
07/23/1996US5539470 Image processing apparatus
07/23/1996US5539451 Method and apparatus for channel spinning off a channel
07/18/1996WO1996021990A2 Information system having a speech interface
07/16/1996US5537473 Video recorder system
07/16/1996US5537446 Smoothing delay-sensitive traffic offered to asynchronous transfer mode networks
07/16/1996US5537408 apparatus and method for segmentation and time synchronization of the transmission of multimedia data
07/16/1996US5537292 Plug in expansion card for a subscriber terminal
07/16/1996US5537152 Television receiver for displaying registered broadcast channels in display segements and a channel selector having similar segments
07/16/1996US5537150 Image processing apparatus and image communicating apparatus
07/16/1996US5537148 Video and audio data demultiplexer having controlled synchronizing signal
07/16/1996US5537143 Interactive communication system
07/16/1996US5537141 Distance learning system providing individual television participation, audio responses and memory for every student
07/11/1996WO1996021320A1 Modem with automatic callback provisions
07/11/1996WO1996021319A1 Video viewing supervision system
07/10/1996CN1126535A System for multiplexed transmission of compressed video and auxiliary data
07/10/1996CN1126405A Variable bit rate audio information transmitting apparatus, and method therefor
07/10/1996CN1126339A Video data bus communication system and method
07/09/1996US5534937 Minimum-delay jitter smoothing device and method for packet video communications
07/09/1996US5534912 Extended range video on demand distribution system
07/09/1996US5534911 Virtual personal channel in a television system
07/04/1996WO1996020575A2 Buffer management in variable bit-rate compression systems
07/04/1996WO1996020568A2 Buffering for digital video signal encoders using joint bit-rate control
07/04/1996WO1996020567A1 Memory controller for decoding and displaying compressed video data
07/04/1996WO1996020557A1 Picture information encoding/decoding system
07/03/1996EP0720369A2 Real-time edit control for video program material
07/03/1996EP0720368A1 Method and apparatus for channel spinning off a channel
07/03/1996EP0720347A2 Image information encoding/decoding system
07/02/1996US5533021 Apparatus and method for segmentation and time synchronization of the transmission of multimedia data
07/02/1996US5532748 Hybrid analog/digital television transmission system
06/1996
06/27/1996WO1996019882A1 Multimedia multiplexing device and method using dynamic packet segmentation
06/26/1996EP0718840A2 Data recording medium and apparatus
06/26/1996EP0717908A1 A system for local processing/accessing and representation of large volumes of data
06/26/1996EP0717892A1 Real-time audio packet layer encoder
06/20/1996WO1996019081A1 Digital video programme multiplexing device
06/20/1996WO1996019077A1 Subtitling transmission system
06/20/1996WO1996019076A1 Synchronization method and appartus for playback system
06/20/1996WO1996018956A1 Apparatus and method for video decoding
06/20/1996CA2208432A1 Digital video programme multiplexing device
06/20/1996CA2205960A1 Apparatus and method for video decoding