Patents
Sitemap › H04 - Electric communication technique › H04N - Pictorial communication, e.g. television › 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)
11/1998
11/17/1998US5838384 System for assigning multichannel audio signals to independent wireless audio output devices
11/17/1998US5838380 Memory controller for decoding a compressed/encoded video data frame
11/17/1998US5838314 Digital video services system with optional interactive advertisement capabilities
11/11/1998EP0877517A2 Output interface for a digital communication system
11/11/1998EP0877514A2 Matched filter
11/11/1998CN1198869A Compressed video data processing with conversion of image compression format
11/11/1998CN1198634A Outer equipment connection state display device for composite video frequency device and method thereof
11/10/1998US5835730 MPEG packet header compression for television modems
11/10/1998US5835715 Interactive theater and feature presentation system
11/10/1998US5835670 Multilingual recording medium and reproduction apparatus
11/10/1998US5835668 Transmission, recording and reproduction of digital data and time information in transport packets using a compression ratio
11/10/1998US5835498 System and method for sending multiple data signals over a serial link
11/10/1998US5835495 Method for supplying digital audio files to a recipient
11/10/1998US5835493 Multiplexer for communicating plural programs
11/10/1998US5835156 Television graphical user interface employing remote random access pointing device
11/10/1998US5835087 System for generation of object profiles for a system for customized electronic identification of desirable objects
11/04/1998CN1198285A TV schedule system with enhanced features
11/03/1998US5832300 System for maintaining a minimum level of digitized data signal quality while allowing bandwidth dependent quality enhancement with additional enhancement data packets
11/03/1998US5832287 For multiple users at a remote location
11/03/1998US5832223 System, method and device for automatic capture of internet access information in a broadcast signal for use by an internet access device
11/03/1998US5831690 Apparatus for formatting a packetized digital datastream suitable for conveying television information
11/03/1998US5831664 Method and system for synchronizing data between at least one mobile interface device and an interactive terminal
10/1998
10/28/1998EP0874524A1 A system for unattended recording of television programs
10/28/1998EP0874499A2 Analog-to-digital converter for digital receiver
10/28/1998EP0874491A2 Signal processing apparatus and method
10/28/1998EP0874466A2 Reed-Solomon decoding circuit and method
10/28/1998EP0873649A1 Method and apparatus for navigating an on-screen program guide
10/28/1998EP0873638A1 Hybrid fiber coax communications system
10/28/1998EP0763243B1 Memory device
10/28/1998CN1197341A Data indicating controller, data transmitting device and control information editting device
10/27/1998US5829046 On-line tape backup using an integrated cached disk array
10/27/1998US5828904 System for data retrieval by scheduling retrieval if number of units scheduled equals or less than predetermined number and retrieving before or at time elapsed
10/27/1998US5828839 Computer network chat room based on channel broadcast in real time
10/27/1998US5828655 Hybrid access system with quality-based channel switching
10/27/1998US5828420 For displaying a program guide on a display screen
10/27/1998US5828419 Method and apparatus for generating television program guides utilizing icons
10/27/1998US5828416 System and method for interfacing a transport decoder to a elementary stream video decorder
10/27/1998US5828414 Reduction of timing jitter in audio-video transport streams
10/27/1998US5828370 Video delivery system and method for displaying indexing slider bar on the subscriber video screen
10/27/1998US5828326 Method of encoding and decoding for data transmission
10/22/1998WO1998047293A1 Transmission of mpeg-2 encoded video in atm networks
10/22/1998WO1998047288A1 System for forming and processing an mpeg compatible datastream incorporating internet information
10/22/1998WO1998047287A1 System for automatically forming a program guide from information derived from multiple sources
10/22/1998WO1998047286A1 A system for processing and decoding mpeg compatible data and internet information
10/22/1998WO1998047285A1 System for acquiring information requested by a user via a program guide selection
10/22/1998WO1998047284A1 System for forming program guide information for user initiation of control and communication functions
10/22/1998WO1998047283A1 System for collating data from multiple sources to form a composite program guide for display
10/22/1998WO1998047279A2 Multiple database, user-choice-compiled program and event guide
10/22/1998WO1998047063A1 A hierarchical menu graphical user interface
10/22/1998WO1998031116A3 Method and apparatus for providing a menu structure for an interactive information distribution system
10/22/1998WO1998025405A3 Variable rate video playback with synchronized audio
10/21/1998EP0872970A2 Data transmission and reception
10/21/1998EP0872096A1 Apparatus for demodulating and decoding video signals
10/21/1998EP0872073A2 Steganographic method and device
10/20/1998US5826166 Digital entertainment terminal providing dynamic execution in video dial tone networks
10/20/1998US5826165 Advertisement reconciliation system
10/20/1998US5826044 Display control system having a PCMCIA interface
10/20/1998US5825824 DC-balanced and transition-controlled encoding method and apparatus
10/15/1998WO1998046024A1 System and method for generation and interfacing of bitstreams representing mpeg-coded audiovisual objects
10/15/1998WO1998046006A2 System and method for interfacing mpeg-coded audiovisual objects permitting adaptive control
10/15/1998WO1998046005A2 System and method for processing object-based audiovisual information
10/15/1998WO1998045978A2 Method and apparatus for providing remote site administrators with user hits on mirrored web sites
10/15/1998WO1998028907A3 Method and system for providing interactive look-and-feel in a digital broadcast via an x-y protocol
10/15/1998WO1998021877A3 Means for creating a television viewer profile
10/14/1998EP0871334A2 Multimedia information processing apparatus
10/14/1998EP0871177A2 A non-timeline, non-linear digital multimedia composition method and system
10/14/1998EP0870368A1 Compressive communication and storage system
10/14/1998EP0870248A1 Apparatus and method for video decoding
10/14/1998EP0870235A1 Apparatus and method for preprocessing computer programs prior to transmission across a network
10/14/1998EP0756801B1 Conditional access information arrangement
10/14/1998CN1196150A 数据处理系统 The data processing system
10/14/1998CN1196149A Reconfigurable on-demand telephone and data line system
10/14/1998CN1195952A 图象传输装置和图象传输方法 An image transmission apparatus and an image transmission method
10/13/1998US5822537 Multimedia networked system detecting congestion by monitoring buffers' threshold and compensating by reducing video transmittal rate then reducing audio playback rate
10/13/1998US5822528 Audio-video data transmission apparatus, audio-video data transmission system and audio-video data server
10/13/1998US5822524 System for just-in-time retrieval of multimedia files over computer networks by transmitting data packets at transmission rate determined by frame size
10/13/1998US5822317 Packet multiplexing transmission apparatus
10/13/1998US5822020 Method and device for generating a modulated television signal
10/13/1998US5822018 Method and apparatus for normalizing signal levels in a signal processing system
10/13/1998US5821986 Method and apparatus for visual communications in a scalable network environment
10/13/1998US5821914 Apparatus for displaying time on a screen
10/13/1998CA2106834C Initializing terminals in a signal distribution system
10/11/1998CA2220598A1 Apparatus and method for real-time display of data
10/08/1998WO1998044737A1 Method for seamless splicing in a video encoder
10/08/1998WO1998044733A1 Method and system for providing a presentation on a network
10/08/1998WO1998044731A1 Display with one or more display windows and placement dependent cursor and function control
10/08/1998WO1998044726A1 System for setting user-adjustable image processing parameters in a video system
10/08/1998WO1998044683A1 Digital communication system, transmitter, and data selector
10/08/1998WO1998024186A3 Semiconductor imaging sensor with on-chip encryption
10/07/1998EP0869675A2 An exciter circuit for digital television transmitters
10/07/1998EP0869674A1 Transmitting system and method
10/07/1998EP0869673A2 Television signal broadcasting system with common clock reference
10/07/1998EP0869672A1 Predistortion circuit for an RF amplifier
10/07/1998EP0869671A1 Frequency controlling circuit for digital television transmission
10/07/1998EP0869670A1 Combining adjacent TV channels for transmission by a common antenna
10/07/1998EP0869666A2 A digital system having a sync confidence counter
10/07/1998EP0869650A2 A trellis encoder for encoding a digital data stream
10/07/1998EP0868797A1 Fast sync-byte search scheme for packet framing
10/07/1998CN1195439A Cryptographic system with concealed work factor
10/07/1998CN1195437A Dynamic allocation of bandwidth for transmission of audio signals and video signal
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