| Patents for H04H 20 - Arrangements for broadcast or for distribution combined with broadcast (21,050) |
|---|
| 12/13/1990 | CA2018539A1 Satellite television communication system for audience polling and processing answers |
| 12/11/1990 | US4977597 Stereo receiver circuit |
| 12/02/1990 | CA2475414A1 Decoder, receiver and method for decoding an encoded digital audio signal |
| 12/01/1990 | WO1990015508A1 Improvements relating to entertainment and services systems |
| 12/01/1990 | CA2033054A1 Entertainment and services systems |
| 11/29/1990 | WO1990014721A1 Portable personal reception and display device for information transmitted via radio, combined with a watch |
| 11/28/1990 | EP0399897A1 System for individual participation in a television broadcast |
| 11/28/1990 | EP0399355A2 Broadcast receiver |
| 11/20/1990 | US4972484 Method of transmitting or storing masked sub-band coded audio signals |
| 11/20/1990 | US4972471 Encoding system |
| 11/20/1990 | US4972410 Method and apparatus for controlling signal coherency in simulcast systems |
| 11/20/1990 | US4972275 Wideband radio-frequency broadcast recorder and radio testing system |
| 11/15/1990 | WO1990013882A1 Broadcast receiver, in particular for vehicles |
| 11/15/1990 | DE3915099A1 Mobile traffic warning system - transmits signals with local effectiveness in non-audible and non-visible wavelength range |
| 11/15/1990 | DE3914104A1 Rundfunkempfaenger, insbesondere fahrzeugempfaenger Rundfunkempfaenger, especially fahrzeugempfaenger |
| 11/13/1990 | US4970722 Broadband local area network |
| 11/06/1990 | US4968966 Transmitting message to a paging transceiver |
| 11/01/1990 | WO1990013190A1 Technique for using a subcarrier frequency of a radio station to transmit, receive and display a message together with audio reproduction of the radio program |
| 10/30/1990 | US4967273 Television program transmission verification method and apparatus |
| 10/25/1990 | DE3912945A1 Car radio receiving traffic broadcast - uses recorded text for traffic information supplied when radio is switched off |
| 10/23/1990 | US4965825 Method of generating computer output |
| 10/09/1990 | USRE33381 Multiple system AM stereo receiver and pilot signal detector |
| 10/03/1990 | EP0389689A1 Method for transmitting a transmission signal and a transmitting device and a receiving device for use in the method |
| 10/02/1990 | US4961109 Chargeable program receiving limit setting system in two-way cable television system |
| 09/26/1990 | EP0388893A2 Digital radio transmission system |
| 09/20/1990 | DE3909334A1 Circuit for selected reception or recording of predetermined radio and/or television programmes |
| 09/18/1990 | CA1274282A1 Transmitter having means for controlling out-of-band radiation |
| 09/13/1990 | DE4007411A1 Data reduction system for digital tone signals |
| 09/12/1990 | EP0386917A2 Signal distribution systems |
| 09/12/1990 | EP0386836A1 Method of processing a radio data signal and receiver for performing said method |
| 09/12/1990 | EP0386835A1 Method of processing a radio data signal, and receiver for performing said method |
| 09/12/1990 | EP0386635A2 Device for distributing wide-band signals through a branched coaxial-cable network |
| 09/12/1990 | EP0386418A2 Method for data reduction of digital audio signals and for approximate recovery of same |
| 09/11/1990 | US4956768 Wideband server, in particular for transmitting music or images |
| 09/05/1990 | EP0385147A2 Apparatus for controlling the reception capacity of radio alarm receivers |
| 09/04/1990 | US4955072 Method of generating an amplitude-modulated ISB transmission signal and apparatus for carrying out the method |
| 08/30/1990 | DE3904181A1 Broadcast receiving device for motor vehicles |
| 08/29/1990 | EP0384794A1 Traffic and parking information collecting and broadcasting system for transport vehicles, especially for motorists |
| 08/29/1990 | EP0384368A2 Method for the surveillance of several traffic radio transmitters |
| 08/29/1990 | EP0383775A1 A pay per view entertainment system. |
| 08/29/1990 | EP0207964B1 Broadcast stereo companding system and apparatus |
| 08/22/1990 | EP0382996A1 Method and system for ascertaining the consumption habits of a test population |
| 08/22/1990 | EP0382764A1 Signal processing apparatus and methods. |
| 08/16/1990 | EP0382675A1 FM receiver and communication systems including same |
| 08/16/1990 | EP0381937A2 Warning messages reproduction system |
| 08/14/1990 | US4949394 Addressable PCM music broadcast receiver |
| 08/14/1990 | US4949171 Commutation grid |
| 08/09/1990 | DE4009683A1 Digital storage arrangement for traffic messages - has bandwidth low-pass filter limiting without loss of information |
| 08/08/1990 | EP0380475A1 Fm communications system with improved response to rayleigh-faded received signals |
| 08/07/1990 | US4947386 Fixed gain fixed loss amplification system |
| 08/03/1990 | CA2008789A1 System for collecting and disseminating information on traffic and on parking of transport vehicles (in particular for car drivers) |
| 08/02/1990 | DE4002811A1 Distribution box with attenuators for community antenna TV - provides two switchable electrical paths having different attenuation between input coaxial cable and subscriber cable connections |
| 08/01/1990 | EP0379532A1 A method of evaluating digitally encoded traffic information received in a data telegram and radio receivers |
| 07/31/1990 | US4945412 Method of and system for identification and verification of broadcasting television and radio program segments |
| 07/31/1990 | CA1272311A1 Digital audio transmission system |
| 07/24/1990 | US4944011 Circuit for controlling operator indicators in an AM stereo receiver |
| 07/10/1990 | US4941040 Cable television system selectively distributing pre-recorded video and audio messages |
| 07/03/1990 | CA1271249A1 Image reception system |
| 06/27/1990 | EP0374996A1 FM-receiver |
| 06/26/1990 | US4937821 Pipeline information delivery system |
| 06/13/1990 | EP0372499A2 Apparatus and method for providing digital audio in the FM broadcast band |
| 06/05/1990 | US4931871 Method of and system for identification and verification of broadcasted program segments |
| 05/30/1990 | EP0370915A1 Device and system for isofrequencial broadcasting with reduced interfrequencies |
| 05/23/1990 | EP0369917A2 Method for broadcasting digital data, especially towards mobile stations, with a high bit rate, with time-frequency interleaving and analogous synchronisation |
| 05/23/1990 | EP0369102A2 Modulation method and arrangement for carrying out the method |
| 05/23/1990 | CN1042460A Satellite radio receiver |
| 05/22/1990 | US4928177 Two-way data broadcast networks |
| 05/17/1990 | WO1990005410A1 Satellite radio receiver |
| 05/16/1990 | EP0368390A1 Amplification system for teledistribution |
| 05/16/1990 | EP0368313A2 Video tape recorder capable of receiving teletext broadcasting |
| 05/16/1990 | EP0367897A2 Method for the simultaneous transmission of digital data signals in band-limited transmission channels |
| 05/16/1990 | EP0367896A2 Method for the simultaneous transmission of digital data signals in band-limited transmission channels |
| 05/15/1990 | US4926255 System for evaluation of response to broadcast transmissions |
| 05/10/1990 | DE3915101C1 Superimposing radio signals in selected region by announcements - determining transmission levels of priority signals needed to cover actual reception levels |
| 05/09/1990 | EP0367214A1 Satellite broadcast receiver |
| 05/09/1990 | EP0367077A2 Frequency, phase and modulation control system which is especially useful in simulcast transmission systems |
| 05/03/1990 | WO1990004889A1 Improved simulcast broadcasting system and method |
| 05/02/1990 | EP0366381A2 Signal identification system |
| 05/01/1990 | US4922536 Digital audio transmission for use in studio, stage or field applications |
| 05/01/1990 | CA1268546A1 Stereophonic voice signal transmission system |
| 05/01/1990 | CA1268361A1 Fiber-optic distribution system for broadband signals |
| 04/26/1990 | DE3838328C1 Traffic radio memory for a car radio |
| 04/19/1990 | WO1990004314A1 High data rate simulcast communication system |
| 04/19/1990 | DE3934314A1 Radio data signal receiver for automobile - performs channel pre selection and automatic switching to different frequency to provide same programme upon loss of signal |
| 04/17/1990 | US4918516 Closed circuit television system having seamless interactive television programming and expandable user participation |
| 04/17/1990 | US4918437 High data rate simulcast communication system |
| 04/11/1990 | EP0362315A1 Device for monitoring acoustic signal processing systems. |
| 04/11/1990 | EP0194289B1 Information display scheme for subscribers of a subscription television system |
| 04/11/1990 | CN1041251A Method of generating amplitude-modulated isb transmission signal and apparatus for carrying out method |
| 04/10/1990 | US4916741 FM/FMX stereophonic receiver |
| 04/04/1990 | EP0360990A1 Method for generating an amplitude-modulated ISB signal, and device for carrying out the method |
| 03/14/1990 | CN1007196B Tone detector with pseudo locked loop |
| 03/06/1990 | US4907159 Device for receiving and processing road information |
| 03/06/1990 | CA1266525A1 Information display scheme for subscribers of a subscription television system |
| 02/28/1990 | EP0355697A2 Multimedia bidirectional broadcast system |
| 02/27/1990 | US4905080 Apparatus for collecting television channel data and market research data |
| 02/20/1990 | US4903329 In a receiver |
| 02/08/1990 | WO1990001243A1 A pay per view entertainment system |
| 01/25/1990 | DE3824309A1 Method for evaluating traffic information, which is received in digitally coded form in a data message, as well as a broadcast radio receiver |
| 01/24/1990 | EP0351916A2 Stereo receiving circuit |