| Patents for H04H 20 - Arrangements for broadcast or for distribution combined with broadcast (21,050) |
|---|
| 10/01/1997 | EP0798887A1 Method for the transmission of messages and receiver for the reception of messages |
| 10/01/1997 | EP0797892A1 Method of terrestrially transmitting digital signals |
| 10/01/1997 | EP0797878A1 Ofdm with variable subcarrier allocation |
| 10/01/1997 | EP0797876A2 Circuit array and process for creating a data feedback channel from receiver to transmitter in a common frequency network |
| 09/30/1997 | US5673323 Analog spread spectrum wireless speaker system |
| 09/30/1997 | US5673292 AM-PSK system for broadcasting a composite analog and digital signal using adaptive M-ary PSK modulation |
| 09/25/1997 | WO1997035429A1 Television or radio programme signal comprising supplementary data |
| 09/25/1997 | WO1997035428A1 Television or radio programme signal comprising supplementary data |
| 09/25/1997 | DE19611424A1 Kombination eines optischen Sternnetzes und eines passiven optischen Netzes Combination of an optical star network and a passive optical network |
| 09/24/1997 | EP0797355A2 Digital broadcast receiver |
| 09/24/1997 | EP0797324A2 Enhanced joint stereo coding method using temporal envelope shaping |
| 09/24/1997 | EP0797323A1 Transmitter for digital radio broadcast signals |
| 09/24/1997 | EP0797322A2 Digital audio system with video display of the program guide |
| 09/24/1997 | CN1160329A Device for transmitting paging data and method therefor |
| 09/24/1997 | CN1160317A Communication device and method |
| 09/24/1997 | CN1160313A RDS-TMC broadcast receiver |
| 09/23/1997 | US5671347 Method and apparatus for broadcasting live events to another location and producing a computer simulation of the events at that location |
| 09/23/1997 | US5670902 Satellite broadcast receiving system and change-over divider for use in same |
| 09/22/1997 | CA2200774A1 Transmitter of digital audio broadcasting signals |
| 09/18/1997 | WO1997034421A1 Data transmission using atm over hybrid fiber coax |
| 09/18/1997 | WO1997034420A1 Interactive cable network providing fax and voice mail |
| 09/18/1997 | WO1997034390A1 High speed data communication over unshielded twisted pair |
| 09/18/1997 | WO1997034384A1 Broadcast system using adaptive data structure |
| 09/18/1997 | WO1997034383A1 Subcarrier injection system and method using adaptive level-shifted minimum shift keying |
| 09/18/1997 | WO1997034382A1 Process and system for the ofdm multi-carrier transmission of digital radio signals |
| 09/18/1997 | WO1997034275A2 Storage medium carrying geographical location data |
| 09/18/1997 | DE19610400A1 Audio and data system switching device e.g. for satellite transmission |
| 09/18/1997 | DE19609909A1 Verfahren und System zur OFDM-Mehrträger-Übertragung von digitalen Rundfunksignalen Method and system for OFDM multicarrier transmission of digital broadcast signals |
| 09/17/1997 | EP0795974A2 Method and receiver for the reproduction of received spoken messages and method for transmitting spoken messages |
| 09/17/1997 | CN2262781Y Digital display type wire broadcasting output controlling cabinet |
| 09/16/1997 | US5668948 Media streamer with control node enabling same isochronous streams to appear simultaneously at output ports or different streams to appear simultaneously at output ports |
| 09/16/1997 | US5668923 Voice messaging system and method making efficient use of orthogonal modulation components |
| 09/16/1997 | US5668805 Multiplex broadcasting method and system |
| 09/12/1997 | WO1997033392A1 Audio signal identification using code labels inserted in the audio signal |
| 09/12/1997 | WO1997033391A1 Coding process for inserting an inaudible data signal into an audio signal, decoding process, coder and decoder |
| 09/12/1997 | WO1997025791A3 Process for the joint use of a time-multiplex transmission channel by a plurality of transmitters |
| 09/11/1997 | DE19640825A1 Encoder arrangement for applying inaudible data signal |
| 09/11/1997 | DE19640814A1 Coding method with insertion of inaudible data signal into audio signal |
| 09/10/1997 | EP0794670A2 Context-based recognition system for interactive tv and telephony |
| 09/10/1997 | EP0794625A2 Method and system for transmitting audio-associated text information in a multiplexed transmission stream |
| 09/10/1997 | EP0793878A1 Radio receiving and transmitting device and method of receiving and transmitting radio signals |
| 09/10/1997 | CN1159265A Apparatus and method for generating product coupons in response to televised offers |
| 09/10/1997 | CN1159240A Device for generating coded speech items in vehicle |
| 09/10/1997 | CN1159120A Video data receiving apparatus, video data transmitting apparatus, and broadcasting system |
| 09/09/1997 | US5666660 System for receiving a radio signal including multiple receiving units |
| 09/09/1997 | US5666378 High performance modem using pilot symbols for equalization and frame synchronization |
| 09/09/1997 | US5666365 Simulcast transmission of digital programs to shared antenna receiving systems |
| 09/03/1997 | EP0793361A1 Circuit for decoding auxiliary data in a broadcast signal |
| 09/03/1997 | CN2261693Y Code remote controlling transmitting/receiving apparatus for frequency modulation radio |
| 09/03/1997 | CN1158521A RDS-TMC broadcast receiver |
| 09/02/1997 | US5664002 Method and apparatus for providing power to a coaxial cable network |
| 09/02/1997 | US5663757 Local subscriber*s data processing station for a wireless television program |
| 08/28/1997 | WO1997031479A1 Two-way interactive television system |
| 08/28/1997 | WO1997031440A1 Simultaneous transmission of ancillary and audio signals by means of perceptual coding |
| 08/28/1997 | WO1997026724A3 Mobile and wireless information dissemination system; architecture and protocols |
| 08/28/1997 | CA2242725A1 Simultaneous transmission of ancillary and audio signals by means of perceptual coding |
| 08/27/1997 | EP0792068A2 Downstream control of electronic billboard |
| 08/27/1997 | EP0570481B1 Am-fm combined stereo receiver |
| 08/27/1997 | CN1158034A RDS-TMC broadcast receiver |
| 08/26/1997 | US5661810 Circuit arrangement for deriving signals for masking audio signals |
| 08/21/1997 | WO1997030553A1 Device and method relating to cable tv networks |
| 08/21/1997 | DE19605631A1 Local radio network with external and internal range |
| 08/21/1997 | CA2246792A1 Device and method relating to cable tv networks |
| 08/20/1997 | EP0790722A1 Automatic mode detection in digital audio receivers |
| 08/20/1997 | EP0790719A2 Method and receiver for the reception and reproduction of digitally coded traffic messages |
| 08/19/1997 | US5659877 System for distributing broadcasting material and identifying segment data |
| 08/19/1997 | US5659353 Television distribution system and method |
| 08/19/1997 | US5659351 Switch and insertion networks in optical cable TV system |
| 08/19/1997 | US5659350 Operations center for a television program packaging and delivery system |
| 08/14/1997 | WO1997029591A1 Media online services access system and method |
| 08/14/1997 | WO1997029555A1 N-channel transmission, compatible with 2-channel transmission and 1-channel transmission |
| 08/14/1997 | WO1997029554A1 7-channel transmission, compatible with 5-channel transmission and 2-channel transmission |
| 08/14/1997 | WO1997029550A1 Digital wireless speaker system |
| 08/14/1997 | WO1997029458A1 System for providing an interactive presentation |
| 08/14/1997 | CA2244191A1 Digital wireless speaker system |
| 08/13/1997 | EP0789464A2 Mobile two-way communication system |
| 08/13/1997 | EP0788713A1 System and method for verification of electronic television program guide data |
| 08/07/1997 | WO1997028620A1 Coding of file segments on a digital radio channel |
| 08/06/1997 | EP0788251A2 Digital audio broadcasting receiver |
| 08/06/1997 | EP0787412A1 Transmitting digital data using multiple subcarriers |
| 08/06/1997 | EP0787388A1 Common-wave telecommunication network synchronisation method and system |
| 08/06/1997 | CN1035590C Coding method for broadcasting transmissions |
| 07/31/1997 | WO1997027706A1 Channel quality management in a cable telephony system |
| 07/31/1997 | WO1997027683A1 A method and a system for communication of control information from a control information generator to one or more computer installations |
| 07/31/1997 | WO1997027550A2 Communication system with multicarrier telephony transport |
| 07/31/1997 | CA2243714A1 A method and a system for communication of control information from a control information generator to one or more computer installations |
| 07/30/1997 | EP0786889A1 Method for the reception of multicarrier signals and related apparatus |
| 07/30/1997 | EP0786774A2 Audio reproducing apparatus and method, audio recording apparatus and method, audio recording and reproducing system, audio data transmission method, information receiving apparatus, and recording medium |
| 07/30/1997 | EP0786172A1 Digital transmission system, transmitter, receiver, equivalent analog signal, and transmission method |
| 07/30/1997 | EP0786126A1 System for distributing and selecting audio and video information and method implemented by said system |
| 07/30/1997 | EP0786125A1 Home digital audiovisual information recording and playback apparatus |
| 07/30/1997 | EP0786124A1 Intelligent digital audiovisual playback system |
| 07/30/1997 | EP0786122A1 Intelligent digital audiovisual playback system |
| 07/30/1997 | EP0786121A1 Intelligent digital audiovisual playback system |
| 07/30/1997 | CN1155789A Information transmitting and receiving apparatus |
| 07/29/1997 | US5652795 Method and apparatus for an adapter card providing conditional access in a communication system |
| 07/29/1997 | US5652759 Method and apparatus for delivering information in a real time mode over a nondedicated circuit |
| 07/29/1997 | US5652615 Precision broadcast of composite programs including secondary program content such as advertisements |
| 07/24/1997 | WO1997026724A2 Mobile and wireless information dissemination system; architecture and protocols |
| 07/24/1997 | WO1997026630A1 Digital voice paging system |