| Patents for H04N 21 - Selective content distribution, e.g. interactive television, vod [video on demand] (56,445) |
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| 07/29/1997 | US5652627 In a video system |
| 07/29/1997 | US5652615 Precision broadcast of composite programs including secondary program content such as advertisements |
| 07/29/1997 | US5652613 Intelligent electronic program guide memory management system and method |
| 07/23/1997 | CN1155221A Data decoding instrument and method thereof |
| 07/23/1997 | CN1155207A Method for sending news data with original manuscript and device thereof |
| 07/22/1997 | US5651010 Simultaneous overlapping broadcasting of digital programs |
| 07/22/1997 | US5650825 Method and apparatus for sending private data instead of stuffing bits in an MPEG bit stream |
| 07/17/1997 | WO1997025816A1 Copy protect recording and playback system |
| 07/16/1997 | EP0784401A2 Digital broadcast receiving terminal apparatus |
| 07/16/1997 | EP0783818A1 Content programmer control of video and data display using associated data |
| 07/16/1997 | EP0726016A4 System and method for disk software publishers to control disk distribution |
| 07/16/1997 | EP0516828B1 Method for providing video programming nearly on demand |
| 07/15/1997 | US5649029 MPEG audio/video decoder |
| 07/15/1997 | US5648824 Video control user interface for controlling display of a video |
| 07/15/1997 | US5648781 Method and apparatus for remotely controlling electrical appliances using a trackball and display |
| 07/13/1997 | CA2194947A1 Digital broadcast receiving terminal apparatus |
| 07/10/1997 | WO1997024877A1 Near-video-on-demand digital video distribution system utilizing asymmetric digital subscriber lines (adsl) |
| 07/10/1997 | WO1997024872A1 Method and device for performing source transitions in a video system which performs entropy encoding |
| 07/10/1997 | WO1997024674A1 Apparatus and method for preprocessing computer programs prior to transmission across a network |
| 07/09/1997 | EP0782807A1 Smart-card based access control system with improved security |
| 07/08/1997 | US5646997 Method and apparatus for embedding authentication information within digital data |
| 07/08/1997 | US5646942 Simulcast transmission of digital programs to shared antenna receiving systems |
| 07/08/1997 | US5646686 Methods and apparatus for reducing drift in video decoders |
| 07/08/1997 | US5646677 Method and apparatus for interactively viewing wide-angle images from terrestrial, space, and underwater viewpoints |
| 07/08/1997 | US5646676 Scalable interactive multimedia server system for providing on demand data |
| 07/08/1997 | CA2095316C Reduction of interchannel harmonic distortions in an analog and digital signal multiplex |
| 07/02/1997 | EP0781490A1 Method and apparatus for frame accurate access of digital audio-visual information |
| 07/02/1997 | EP0781489A1 Telecasting service for providing video programs on demand with an interactive interface for facilitating viewer selection of video programs |
| 07/02/1997 | CN1153587A Method and apparatus for processing conditional access program guide as for satellite TV service |
| 07/01/1997 | US5644714 Video collection and distribution system with interested item notification and download on demand |
| 07/01/1997 | US5644660 Method and apparatus for efficiently transmitting forced updates in a moving picture codec |
| 07/01/1997 | US5644364 Media pipeline with multichannel video processing and playback |
| 07/01/1997 | US5644354 Interactive video system |
| 06/26/1997 | WO1997017798A3 Multimedia communications with system-dependent adaptive delays |
| 06/25/1997 | EP0781054A2 Method of encoding and decoding for data transmission |
| 06/24/1997 | US5642437 Data processing system |
| 06/24/1997 | US5642338 Information recording medium and apparatus and method for recording and reproducing information |
| 06/24/1997 | US5642171 Method and apparatus for synchronizing audio and video data streams in a multimedia system |
| 06/24/1997 | US5642153 Consumer interface for a digital television system |
| 06/24/1997 | US5642152 Method and system for scheduling the transfer of data sequences utilizing an anti-clustering scheduling algorithm |
| 06/19/1997 | WO1997022201A2 Method and system for transmitting real-time video |
| 06/19/1997 | WO1996027155A3 Systems and methods for secure transaction management and electronic rights protection |
| 06/19/1997 | DE19546327A1 Digital data transparent recording and reproduction method |
| 06/18/1997 | EP0779746A2 Out-of-synchronization recovery method and apparatus of data transmission system |
| 06/18/1997 | EP0779739A2 Architecture and method for providing interactive broadband products and services using existing telephone plant |
| 06/18/1997 | EP0779725A2 Method and apparatus for delivering simultaneous constant bit rate compressed video streams at arbitrary bit rates with constrained drift and jitter |
| 06/18/1997 | EP0779008A2 Transmission of graphic images |
| 06/18/1997 | CN1152243A Apparatus and method for encoding and decoding digital video data |
| 06/17/1997 | US5640452 Location-sensitive decryption of an encrypted message |
| 06/17/1997 | US5640392 Signal receiving apparatus |
| 06/17/1997 | US5640388 Method and apparatus for removing jitter and correcting timestamps in a packet stream |
| 06/12/1997 | WO1997021308A1 Method and apparatus for information processing for data transfer network |
| 06/11/1997 | EP0778710A2 A method and system in data transmission |
| 06/11/1997 | EP0667016A4 Player bus apparatus and method. |
| 06/11/1997 | CN1151814A Transport processor interface for a digital television system |
| 06/11/1997 | CN1151813A Data frame structure and synchronization system for digital television signal |
| 06/11/1997 | CN1151577A Data recording method and apparatus, data record medium and data reproducing method and apparatus |
| 06/11/1997 | CN1151559A Information supplying device |
| 06/10/1997 | US5638140 FPLL having AFC filter with limited phase shift |
| 06/10/1997 | US5638113 Transaction based interactive television system |
| 06/10/1997 | US5638112 Hybrid analog/digital STB |
| 06/05/1997 | WO1997020432A1 Home communications terminal having an applications module |
| 06/04/1997 | EP0777385A2 A method and apparatus for screening audio-visual materials presented to a subscriber |
| 06/04/1997 | EP0777383A1 Data communication device |
| 06/04/1997 | CN1151233A Conditional access information arrangement |
| 06/03/1997 | US5636346 Method and system for selectively targeting advertisements and programming |
| 06/03/1997 | US5636251 Receiver for a trellis coded digital television signal |
| 06/03/1997 | US5636209 Modem to support multiple site call conferenced data communications |
| 06/03/1997 | US5636141 Method and appartus for accumulating and supplying signals |
| 06/03/1997 | US5635989 Method and apparatus for sorting and searching a television program guide |
| 06/03/1997 | US5635985 Low cost joint HD/SD television decoder methods and apparatus |
| 06/03/1997 | US5635979 Dynamically programmable digital entertainment terminal using downloaded software to control broadband data operations |
| 06/03/1997 | US5635864 Comparator circuit |
| 06/03/1997 | US5634849 Content-on-demand interactive video method and apparatus |
| 06/03/1997 | US5634798 Compact disk player-incorporated television receiver having a monitor power control function |
| 05/29/1997 | WO1997019565A2 Set-top electronics and network interface unit |
| 05/29/1997 | WO1997019562A1 Method and apparatus for increasing channel utilization for digital video transmission |
| 05/29/1997 | WO1997019561A1 Method and apparatus for multiplexing video programs |
| 05/29/1997 | WO1997019560A1 Method and apparatus for multiplexing and distributing data with preformatted real-time video |
| 05/29/1997 | WO1997019559A1 Method and apparatus for modifying encoded digital video for improved channel utilization |
| 05/29/1997 | WO1997019557A1 Frequency drift correction in subscriber terminals |
| 05/29/1997 | WO1997019555A1 Interactive special events video signal navigation system |
| 05/29/1997 | WO1997019538A1 Home multimedia network architecture |
| 05/28/1997 | EP0776134A2 Error recovery of audio data carried in a packetized data stream |
| 05/28/1997 | EP0775413A2 Arrangement for decoding digital video signals |
| 05/28/1997 | CN1150878A System and method for subscriber interactivity in television system |
| 05/28/1997 | CN1150846A Smart card message transfer without microprocessor intervention |
| 05/27/1997 | US5633871 Signal processing system |
| 05/27/1997 | US5633683 Arrangement and method for transmitting and receiving mosaic video signals including sub-pictures for easy selection of a program to be viewed |
| 05/22/1997 | WO1997018676A1 Method and device for global bitrate control of a plurality of encoders |
| 05/22/1997 | WO1997018673A1 Method and apparatus for displaying textual or graphic data on the screen of television receivers |
| 05/22/1997 | WO1997018672A1 Near video on-demand system and televising method of the same |
| 05/22/1997 | WO1997018651A1 An adaptor card providing conditional access |
| 05/21/1997 | EP0774709A2 Method of reproducing multimedia data and multimedia data server system |
| 05/20/1997 | US5631848 Data processing system |
| 05/20/1997 | US5631742 Apparatus for decoding edited coded data |
| 05/20/1997 | US5631693 Method and apparatus for providing on demand services in a subscriber system |
| 05/20/1997 | US5631645 Symbol to byte converter |
| 05/15/1997 | WO1997017798A2 Multimedia communications with system-dependent adaptive delays |
| 05/14/1997 | EP0773687A2 Usage management sytem |