| Patents for H04H 20 - Arrangements for broadcast or for distribution combined with broadcast (21,050) |
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| 07/24/1997 | WO1997015999A3 Broadcast system transmitting supplementary data with the broadcast program |
| 07/24/1997 | DE19626391C1 Programme identification coding method for radio data systems |
| 07/23/1997 | EP0785653A2 Telecommunication method permitting efficient data communication |
| 07/22/1997 | US5651010 Simultaneous overlapping broadcasting of digital programs |
| 07/17/1997 | WO1997025791A2 Process for the joint use of a time-multiplex transmission channel by a plurality of transmitters |
| 07/17/1997 | WO1997025784A1 Ofdm system and ofdm apparatus |
| 07/16/1997 | EP0784405A2 Transmission and/or reception of signals |
| 07/16/1997 | EP0783794A1 Amplitude demodulator |
| 07/15/1997 | US5649297 Transmitting digital data using multiple subcarriers |
| 07/15/1997 | US5649285 Transmission of tuning data of broadcasting transmitters to a receiver to facilitate automated set-up of the receiver based on receivable transmitters in a reception area |
| 07/15/1997 | US5649284 Multiplex broadcasting system |
| 07/10/1997 | WO1997012455A3 Simulcast system having digitized 'clear voice' |
| 07/10/1997 | DE19600177A1 Verfahren zur Übertragung von Daten Method for transmitting data |
| 07/09/1997 | EP0782743A1 Process and device for finding an available parking place or covered car park |
| 07/09/1997 | CN1154187A A method and an equipment for transmitting a file-based multimedia and hypermedia service to a mobile receiver |
| 07/09/1997 | CN1154053A Automatic adjustment delay circuit for simulcast of paging system and method thereof |
| 07/08/1997 | US5646942 Simulcast transmission of digital programs to shared antenna receiving systems |
| 07/03/1997 | WO1997024012A1 Surround sound processor with improved control voltage generator |
| 07/03/1997 | WO1997023998A1 Information transmission/reception system |
| 07/03/1997 | WO1997023995A1 Receiver for television multiplex broadcasting |
| 07/03/1997 | WO1997023967A1 Programme file in a digital broadcasting system |
| 07/03/1997 | WO1997023960A1 Remote control device and remote control method |
| 07/01/1997 | US5644640 Surround sound processor with improved control voltage generator |
| 06/26/1997 | DE19547387A1 RDS radio signal system |
| 06/25/1997 | EP0781030A2 Method for the operation of a telephone network and digital telephone |
| 06/24/1997 | US5642397 Paging system which combines a paging signal with a standard broadcast baseband signal |
| 06/18/1997 | EP0779738A2 Communication apparatus and communication method |
| 06/18/1997 | EP0611516B1 Process for reducing data in the transmission and/or storage of digital signals from several dependent channels |
| 06/17/1997 | US5640673 Broadcasting satellite communication system with improved answer signal transmission |
| 06/17/1997 | US5640670 Narrow-band quadrature demodulator for recovering analog video and digital audio in a direct broadcast system |
| 06/12/1997 | WO1997021279A1 Multi-media copy management system |
| 06/12/1997 | WO1997015997A3 A system for transferring data in re-assignable groups, a transmitter and a receiver for use in such a system, and a method for transferring, transmitting and receiving such data, and a signal comprising such data |
| 06/11/1997 | EP0691049B1 Method for deriving a quality signal dependent on the quality of a received multiplex signal |
| 06/11/1997 | CN1151797A Method and appts. for encoding and decoding a digital radio signal |
| 06/10/1997 | US5638451 Transmission and storage of multi-channel audio-signals when using bit rate-reducing coding methods |
| 06/10/1997 | US5638422 Distributed antenna personal communication networks system |
| 06/10/1997 | US5638113 Transaction based interactive television system |
| 06/05/1997 | WO1997020430A1 Method and apparatus for multiple access over randomized slots with collision detection in a cable telephony system |
| 06/05/1997 | WO1997020404A1 Rf simulcasting system with automatic wide-range dynamic synchronization |
| 06/05/1997 | DE19648750A1 Waveform identity discriminating circuit for identifying same programmes in FM RDS radio receiver |
| 06/04/1997 | EP0777358A2 Method and apparatus for contention resolution in a broadband network |
| 06/04/1997 | EP0777349A2 Head end station for the reception of digital broadcast signals |
| 06/04/1997 | EP0777348A2 Method for controlling the memory of a broadcast receiver receiving supplementary data together with a broadcast programme |
| 06/03/1997 | US5636324 Apparatus and method for stereo audio encoding of digital audio signal data |
| 06/03/1997 | US5635924 Travel route information monitor |
| 05/29/1997 | WO1997019542A1 Method of synchronizing a digital signal receiver |
| 05/29/1997 | WO1997019532A1 Method for avoiding interference in a cable telephony system |
| 05/29/1997 | WO1997019520A1 Digital transmission system for transmitting a digital audio signal being in the form of samples of a specific wordlength and occurring at a specific sampling rate |
| 05/28/1997 | EP0775403A2 System and method for transmitting and receiving data in packets using different packet type identifiers |
| 05/28/1997 | EP0775395A1 Method of transmitting additional digital information over a transmission channel such as a radio-broadcast channel |
| 05/28/1997 | CN1150878A System and method for subscriber interactivity in television system |
| 05/28/1997 | CN1150873A A method and system for digital audio information broadcasting comprising data compression, encryption and speech synthesizing |
| 05/27/1997 | US5634198 Nationwide communication system |
| 05/27/1997 | US5633981 Method and apparatus for adjusting dynamic range and gain in an encoder/decoder for multidimensional sound fields |
| 05/27/1997 | US5633876 Store and forward repeater |
| 05/27/1997 | US5633872 Interactive radio |
| 05/22/1997 | WO1997018674A1 Multichannel radio frequency transmission system to deliver wide band digital data into indepedent sectorized service areas |
| 05/22/1997 | WO1997018651A1 An adaptor card providing conditional access |
| 05/22/1997 | DE19542991A1 Verfahren zur Synchronisierung eines Empfängers für digitale Signale A method of synchronizing a receiver for digital signals |
| 05/22/1997 | CA2236088A1 Multichannel radio frequency transmission system to deliver wideband digital data into independent sectorized service areas |
| 05/21/1997 | EP0774756A2 Method of recording material data of broadcasting programs and displaying the content of the data, and system for executing the method, and recording medium recording a procedure of implementing the method |
| 05/21/1997 | EP0774152A2 Device for generating coded speech items in a vehicle |
| 05/21/1997 | EP0774147A1 Alerting device and system for abnormal situations |
| 05/15/1997 | WO1997017776A1 Transport of audio in a digital broadcasting system |
| 05/15/1997 | WO1997017775A1 Multimedia reception in a digital broadcasting system |
| 05/15/1997 | WO1997017774A1 Selective advertisement presentation |
| 05/15/1997 | WO1997015121A3 Method of terrestrially transmitting digital signals |
| 05/15/1997 | WO1997011539A3 Method for the common transmission of digital and analogue modulated radio broadcasting and/ or television broadcasting signals |
| 05/14/1997 | EP0772926A1 Process for the wireless transmission of digitally coded navigational messages and device for receiving such messages |
| 05/14/1997 | EP0772856A1 Dual channel advertising referencing vehicle location |
| 05/14/1997 | EP0719482B1 A communication network comprising a plurality of receivers with user profile dependent selection of programmes |
| 05/14/1997 | CN1149795A Multi media digital transmission broadcasting system |
| 05/13/1997 | US5630203 Technique for surveying a radio or a television audience |
| 05/13/1997 | US5630103 Radio transmission system for distribution of newspaper copy in computer format to personal computers for viewing |
| 05/13/1997 | US5629739 Apparatus and method for injecting an ancillary signal into a low energy density portion of a color television frequency spectrum |
| 05/13/1997 | CA2114554C Method and apparatus for maintaining synchronization in a simulcast system |
| 05/07/1997 | EP0772360A2 Video data receiving apparatus, video data transmitting apparatus, and broadcasting system |
| 05/07/1997 | EP0771497A1 Multiple carrier transmission in common wave broadcasting networks |
| 05/07/1997 | EP0719483B1 Process for determining the type of coding to be selected for coding at least two signals |
| 05/07/1997 | EP0623256A4 Variable speed asynchronous modem. |
| 05/07/1997 | EP0532503B1 Cable television radio frequency subscriber data transmission apparatus and calibration method |
| 05/07/1997 | CN1149366A Apparatus and methods for including codes in audio signals and decoding |
| 05/06/1997 | US5628056 Apparatus for converting TV audio signals for reception on a nearby AM and/or FM receiver |
| 05/06/1997 | US5627549 Dual channel advertising referencing vehicle location |
| 05/02/1997 | EP0771081A2 Waveform identity discriminating circuit |
| 05/02/1997 | EP0771005A2 Editing apparatus |
| 05/02/1997 | EP0770291A1 A method and an equipment for transmitting a file-based multimedia and hypermedia service to a mobile receiver |
| 05/02/1997 | EP0770290A1 Process, sender and receiver for transmitting and selecting local radio programs in a common-wave broadcasting network |
| 05/01/1997 | WO1997016020A1 System for dynamic real-time television channel expansion |
| 05/01/1997 | WO1997015999A2 Broadcast system transmitting supplementary data with the broadcast program |
| 05/01/1997 | WO1997015998A1 A radio broadcasting system, a transmitter and a receiver for use in such a system, a radio broadcasting method and a radio broadcasting signal |
| 05/01/1997 | WO1997015997A2 A system for transferring data in re-assignable groups, a transmitter and a receiver for use in such a system, and a method for transferring, transmitting and receiving such data, and a signal comprising such data |
| 04/29/1997 | US5625416 Video communication controller utilizing multiple data channels to deliver separate program segments |
| 04/24/1997 | WO1997015132A1 Scrambled information transmitting and receiving |
| 04/24/1997 | WO1997015128A1 A system of fm data broadcasting and a method of processing data signals thereof |
| 04/24/1997 | WO1997015121A2 Method of terrestrially transmitting digital signals |
| 04/23/1997 | EP0769876A2 Cable television data path error analyser |
| 04/23/1997 | CN1148297A Frequency modulation L-R data broadcast system, and method for treating data signals therefor |
| 04/22/1997 | US5623422 Method for prioritizing channels in a communication system |
| 04/17/1997 | DE19538302A1 Verfahren zur terrestrichen Übertragung digitaler Signale Method for transmitting digital signals terre painted |