H04N 21 - Selective content distribution, e.g. interactive television, vod [video on demand]

Patents for H04N 21 - Selective content distribution, e.g. interactive television, vod [video on demand] (56,445)
11/1994
11/17/1994	EP0624980A1 Transmitter station for transmitting a plurality of television programs, and receiver for receiving the programs
11/15/1994	US5365552 Communication system
11/15/1994	US5365282 Television system module with remote control code determination
11/15/1994	US5365265 Multipoint teleconference system employing communication channels set in ring configuration
11/10/1994	WO1994026066A1 Video interface unit
11/10/1994	WO1994022246A3 Transcription system for manipulating real-time testimony
11/09/1994	EP0624040A2 System for composing multimedia signals for interactive television services
11/09/1994	EP0624031A2 Managing letterbox signals with logos
11/04/1994	CA2120784A1 System for composing multimedia signals for interactive television services
11/02/1994	EP0622958A2 Real-time data transmitter and receiver
11/02/1994	EP0622917A1 Method for transmitting digital compressed audio and/or video signals over a satellite or cable channel
11/02/1994	CN1094554A Improved audio/video telephone communications
11/01/1994	US5361098 Methods and apparatus for generating a picture-in-picture digital television frame by inserting a mean-only frame into a full-size frame
11/01/1994	US5361096 Method and apparatus for multiplex transmission of video signals in a plurality of channels with refresh control utilizing intraframe coding
10/1994
10/27/1994	WO1994024826A1 Addressed messaging in a cable television system
10/27/1994	WO1994024815A1 Media pipeline with multichannel video processing and playback
10/27/1994	WO1994024670A1 Synchronizing digital audio to digital video
10/27/1994	CA2160561A1 Synchronizing digital audio to digital video
10/19/1994	EP0620695A2 Information transmission system with variable transmission rate
10/19/1994	EP0620689A1 Method and apparatus for automatic insertion of a television signal from a remote source
10/18/1994	US5357276 Method of providing video on demand with VCR like functions
10/17/1994	CA2121151A1 Method and apparatus for automatic insertion of a television signal from a remote source
10/13/1994	WO1994023387A1 Synchronized clocks and media players
10/13/1994	WO1994018776A3 Multimedia distribution system
10/11/1994	US5355162 Multi-standard cable television system
10/11/1994	US5355161 Identification system for broadcast program segments
10/05/1994	CN1093211A An operations center for a television program packaging and delivery system
09/1994
09/29/1994	WO1994022246A2 Transcription system for manipulating real-time testimony
09/28/1994	EP0617563A1 Data server, control server and gateway architecture system and method for broadcasting digital video on demand
09/27/1994	US5351135 Video display control system
09/27/1994	US5351130 Satellite receiver with improved memory back-up and loading capabilities
09/27/1994	US5351129 Video multiplexor-encoder and decoder-converter
09/27/1994	US5351075 Home video club television broadcasting system
09/21/1994	CN1092585A Auxiliary device control for a subscriber terminal
09/15/1994	WO1994021079A1 Method and apparatus for compositing compressed video data
09/07/1994	EP0614297A2 Star configuration network system
09/07/1994	EP0614186A2 Transmitting apparatus
09/07/1994	EP0613605A1 Process for synchronizing the scanning circuit of an image display device
09/07/1994	EP0613601A1 Headend processing for a digital transmission system
09/07/1994	EP0613600A1 Transaction based interactive television system
09/06/1994	US5345270 Managing letterbox signals with logos and closed captions
09/01/1994	WO1994019881A1 System and method for remotely selecting subscribers and controlling messages to subscribers in a cable television system
09/01/1994	DE4337135C1 Drop-and-add multiplexer for converting and conditioning a frequency-division multiplex signal
09/01/1994	CA2155537A1 System and method for remotely selecting subscribers and controlling messages to subscribers in a cable television sysem
08/1994
08/31/1994	EP0613301A2 Video data compressor minimizing propagation of error
08/30/1994	US5343239 Transaction based interactive television system
08/24/1994	EP0612190A2 Apparatus for recording and reproducing digital video signal
08/18/1994	WO1994018776A2 Multimedia distribution system
08/18/1994	WO1994018771A1 Flow control by evaluating network load
08/17/1994	CN1090959A Power control apparatus and unlocking apparatus
08/16/1994	US5339315 Cable broadcasting system and the transmission center for on demand program services
08/09/1994	US5337175 Optical communications system for the subscriber area with optical amplifiers
08/04/1994	WO1994017627A1 Television system module with remote control code determination
08/04/1994	WO1994012937A3 Method of operating a disk storage system
08/03/1994	EP0609019A1 Improved audio/video telephone communications
08/03/1994	CN1090454A Set top terminal for cable television delivery systems
08/03/1994	CN1090453A Advanced set top terminal for cable television delivery systems
08/03/1994	CN1090452A Network controller for cable television delivery systems
08/03/1994	CN1090451A Digital cable headend for cable television delivery system
08/02/1994	US5335017 Method for encoding transmitting and receiving high definition television signals using single variable independent equations representing each pixel over time
07/1994
07/21/1994	WO1994016527A1 Broadcast channel substitution method and apparatus
07/21/1994	CA2152585A1 Broadcast channel substitution method and apparatus
07/20/1994	EP0607018A2 Apparatus for displaying time on a screen
07/20/1994	EP0606743A2 A data storage apparatus
07/13/1994	EP0605454A1 Pstn architecture for video-on-demand services
07/06/1994	EP0605115A2 Program server for interactive television system
07/05/1994	US5327160 Touch sensitive user interface for television control
07/05/1994	CA1330599C Video signal decoding system having a frame synchronizer function
06/1994
06/29/1994	EP0603875A2 Digital video signal reproducing apparatus with high-speed play mode
06/28/1994	US5325423 Interactive multimedia communication system
06/23/1994	WO1994014284A1 Reprogrammable terminal for suggesting programs offered on a television program delivery system
06/23/1994	WO1994014283A1 Television program delivery system
06/23/1994	WO1994014282A1 Set top terminal for cable television delivery systems
06/23/1994	WO1994014281A1 An operation center for a television program packaging and delivery system
06/23/1994	WO1994014280A1 Network controller for cable television delivery systems
06/23/1994	WO1994014279A1 Digital cable headend for cable television delivery system
06/22/1994	EP0602621A2 Image encoding and decoding apparatus and method
06/15/1994	EP0601767A2 Image communication apparatus having the function of ECM (error correction mode) communication
06/15/1994	EP0601766A1 Audiovisual communication system using variable length packets
06/15/1994	EP0601647A1 System for combining multiple-format multiple-source video signals
06/09/1994	WO1994013107A1 Advanced set top terminal for cable television delivery systems
06/09/1994	WO1994013101A1 Picture-in-picture tv with insertion of a mean only frame into a full size frame
06/09/1994	WO1994013096A1 Auxiliary device control for a subscriber terminal
06/09/1994	WO1994012937A2 Method of operating a disk storage system
06/09/1994	CA2345161A1 Advanced set top terminal for cable television delivery systems
06/09/1994	CA2150796A1 Auxiliary device control for a subscriber terminal
06/08/1994	EP0600467A2 A digital signal recording and reproducing apparatus
06/07/1994	US5319707 System and method for multiplexing a plurality of digital program services for transmission to remote locations
06/07/1994	US5319454 CATV system enabling access to premium (pay per view) program events by bar code data entry
05/1994
05/31/1994	US5317403 Favorite channel selection using extended keypress
05/31/1994	US5317391 Method and apparatus for providing message information to subscribers in a cable television system
05/26/1994	WO1994011981A1 Interactive multimedia communication system
05/26/1994	CA2148090A1 Interactive multimedia communication system
05/25/1994	EP0598184A2 Multisystem signal processing and recording/reproducing apparatus
05/11/1994	WO1994010802A1 System and method for multiplexing a plurality of digital program services for transmission to remote locations
05/11/1994	WO1994010775A1 A multiplex control packet for digital services
05/11/1994	WO1994010758A1 Process for transmitting and/or storing digital signals from several channels
05/11/1994	WO1994010636A1 Player bus apparatus and method
05/11/1994	EP0596732A1 Method per performing special effects in the receiver of a coded moving picture transmission system
05/11/1994	CA2149426A1 System and method for multiplexing a plurality of digital program services for transmission to remote locations

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