Patents
Sitemap › H04 - Electric communication technique › H04H - Broadcast communication › H04H 20 - Arrangements for broadcast or for distribution combined with broadcast
Patents for H04H 20 - Arrangements for broadcast or for distribution combined with broadcast (21,050)
04/1984
04/24/1984CA1166317A1 Pilot tone detector utilizing phase deviation signals
04/17/1984US4443815 Wired program distribution system tamper detector
04/03/1984US4441180 Service integrated communication transmission and interchange system
03/1984
03/27/1984US4439696 Dividing circuit
03/13/1984CA1163706A1 Wired program distribution system tamper detector
02/1984
02/15/1984EP0100613A1 Signal distribution networks
02/07/1984US4430747 Receiving apparatus for stereophonic broadcast having amplitude and angle modulated signal components
01/1984
01/31/1984US4429187 Audio distributing system
01/17/1984US4426728 Multiple system AM stereo receiver and pilot signal detector
01/03/1984US4424574 Function presetting circuit for an audio/video recording and reproducing system
12/1983
12/27/1983CA1159551A1 Method and apparatus for selectively receiving and/or recording a broadcast of an audio and/or video program
12/22/1983WO1983004459A1 Signal interference protection circuit for am stereo receiver
12/13/1983US4420658 Multiple tone signal system
12/13/1983CA1158787A1 Service integrated communication transmission and interchange system
11/1983
11/23/1983EP0094417A1 Random frequency offsetting apparatus for multi-transmitter simulcast radio communications systems
11/22/1983US4417349 SCA Data transmission system with a raised cosine filter
10/1983
10/25/1983CA1155936A2 Variable-angle, multiple channel amplitude modulation system
10/19/1983EP0091874A1 Method and device for wireless stereophonic transmission from a sound reproducing apparatus to loudspeakers
10/18/1983US4410762 Dual mode tone detector circuit
10/04/1983US4408097 AM-FM Radio receiver for receiving AM-stereo signals
09/1983
09/27/1983US4406922 Stereo broadcast system
09/20/1983US4406006 Dual-signal A-M receiving apparatus
09/20/1983US4405837 Tone detector circuit
09/20/1983US4405835 Receiver for AM stereo signals having a circuit for reducing distortion due to overmodulation
08/1983
08/30/1983US4402090 Communication system in which data are transferred between terminal stations and satellite stations by infrared signals
08/30/1983US4401853 AM Quadrature stereo systems
08/24/1983EP0086541A1 System for communication by way of repeatedly transmitted messages, and stations for use in such a system
08/16/1983CA1152206A1 Buffer memory dispersion type video/audio transmission system
08/16/1983CA1152159A1 Am stereophonic decoder
07/1983
07/12/1983US4393273 FM-Receiver with transmitter characterization
07/05/1983US4392248 Attention signal receiver for emergency broadcast systems
07/05/1983US4392016 AM Stereo carrier reinsertion
06/1983
06/28/1983CA1149023A1 Broadcast system for distribution automation and remote metering
06/22/1983EP0082077A1 Method of teledistributing recorded information, particularly pieces of music, and system for carrying it out
06/14/1983US4388493 In-band signaling system for FM transmission systems
05/1983
05/31/1983US4386424 Broad band telecommunication system
05/31/1983US4386365 Combined wired broadcasting and viewphone system
05/31/1983CA1147449A1 Combined wired broadcasting and viewphone system
05/26/1983WO1983001878A1 Random frequency offsetting apparatus for multi-transmitter simulcast radio communications systems
05/10/1983US4383136 Muting circuit for AM stereophonic receiver
04/1983
04/20/1983EP0077091A1 Multiplier circuit for stereo decoders
04/12/1983US4379947 System for transmitting data simultaneously with audio
04/05/1983US4379208 AM Stereo receiver logic
04/05/1983CA1144240A1 Tangent function generator for am stereo
03/1983
03/22/1983US4377728 Phase locked loop with improved lock-in
03/22/1983US4377725 Asynchronous multichannel receiver
03/02/1983EP0072984A1 Method of automatically determining a time delay compensation in a common-wave radio network
03/01/1983US4375580 AM Stereo receiver separation control
03/01/1983CA1142244A1 Wired broadcasting system with subscriber controlled switched programme selection
02/1983
02/08/1983US4373115 Predictive distortion reduction in AM stereo transmitters
02/01/1983US4371749 Circuit for processing angle modulated broadcast signals
02/01/1983US4371747 AM Stereophonic decoder
01/1983
01/25/1983US4370520 AM Stereo receiver
01/11/1983US4368356 Pilot tone detector utilizing phase deviation signals
12/1982
12/22/1982EP0067193A1 Teledistribution system.
12/08/1982EP0066338A1 FM-broadcasting system with transmitter identification by means of a binary phase-modulated, differentially coded code signal
12/07/1982US4363129 Method and means of minimizing simulcast distortion in a receiver when using a same-frequency repeater
12/07/1982US4362999 AM Stereo phase modulation decoder
09/1982
09/30/1982WO1982003304A1 Pilot tone detector utilizing phase deviation signals
09/29/1982EP0061122A2 Wired program distribution system tamper detector
09/28/1982US4352200 Wireless aircraft passenger audio entertainment system
09/16/1982WO1982003143A1 Phase locked loop with improved lock-in
09/14/1982US4349696 AM Stereophonic demodulator circuit for amplitude/angle modulation system
08/1982
08/31/1982CA1130867A1 Am stereo transmitter
08/25/1982EP0058446A1 Wideband signal distribution
08/24/1982CA1130389A1 Noise protection circuit for am stereo cosine correction factor
08/24/1982CA1130388A1 Am stereo receiver with improved correction signals
08/24/1982CA1130387A1 Am stereo receiver with correction limiting
08/17/1982US4345273 Broad band switching system
08/17/1982CA1129966A1 Am stereophonic receiver
08/17/1982CA1129965A1 Receiver for compatible am stereo signals
08/10/1982US4344038 Low frequency tone detector
07/1982
07/20/1982US4340782 Circuit for demodulating amplitude and angle modulated broadcast signals
07/20/1982US4340779 Interpreter intercommunication and public address system
07/13/1982CA1127717A1 Reduction of adjacent channel interference
07/08/1982WO1982002304A1 Tone detector circuit
07/08/1982WO1982002303A1 Switching system
07/06/1982US4338491 Compatible AM stereophonic system
06/1982
06/30/1982EP0054582A1 Communication system in which data are transferred between terminal stations and satellite stations by infrared signals
06/15/1982CA1125861A1 Independent sideband am multiphonic system
06/10/1982WO1982001970A1 In-band signaling system for fm transmission systems
06/01/1982US4332978 Low frequency AM stereophonic broadcast and receiving apparatus
05/1982
05/25/1982US4331950 Broad band switching network
04/1982
04/20/1982CA1122278A1 Apparatus and method for the identification of specially encoded fm stereophonic broadcasts
04/20/1982CA1122277A1 Variable-angle, multiple channel amplitude modulation system
04/13/1982US4324952 Direct function receivers and transmitters for multichannel communications system
04/06/1982US4323731 Variable-angle, multiple channel amplitude modulation system
03/1982
03/30/1982US4322842 Broadcast system for distribution automation and remote metering
02/1982
02/23/1982US4317220 Simulcast transmission system
02/16/1982US4316058 Sound field transmission system surrounding a listener
02/09/1982CA1118049A1 Am stereo receiver having signal-controlled corrector
01/1982
01/12/1982US4310920 Single sideband AM-FM stereo modulation system
01/12/1982CA1116242A1 Low frequency am stereophonic broadcast and receiving apparatus
01/12/1982CA1116241A1 Radio broadcasting system with code signaling
01/05/1982CA1115776A1 Multitransmitter digital signaling system
12/1981
12/29/1981US4308554 Television viewer reaction determining system
12/23/1981EP0042144A1 Method and arrangement for the simultaneous transmission of information by several common-wave transmitters
12/22/1981US4307466 Audio system for drive-in theaters
12/08/1981US4305101 Method and apparatus for selectively recording a broadcast
12/02/1981EP0040731A1 Method and arrangement for the simultaneous transmission of information by several common-wave transmitters
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