| Patents for H04H 40 - Arrangements specially adapted for receiving broadcast information (5,791) |
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| 12/21/1994 | CN1096619A Intensity-stereo encoding and decoding in a transmission system |
| 12/21/1994 | CN1096618A Digital transmission system for transmitting an additional signal such as a surround signal |
| 12/08/1994 | DE4419428A1 Circuit arrangement for a demodulator of a radio data signal in a broadcast receiver |
| 12/07/1994 | EP0627834A1 Demodulator for RDS signals |
| 12/07/1994 | EP0627833A1 Demodulator for RDS signals |
| 12/07/1994 | EP0627832A1 Demodulator for RDS signals |
| 12/07/1994 | EP0627138A1 Demodulator for radio data signals. |
| 11/09/1994 | EP0623896A2 Chip card and chip card reading device and broadcast receiver |
| 10/11/1994 | US5355393 Digital oscillator for carrier frequency synchronization |
| 09/29/1994 | WO1994022229A1 Circuit for deriving audio signal masking signals |
| 09/29/1994 | WO1994022228A1 Circuit for deriving a quality signal dependent on the quality of a received multiplex signal |
| 09/27/1994 | US5351130 Satellite receiver with improved memory back-up and loading capabilities |
| 09/20/1994 | US5349699 Radio receiver with masking of switchover noise |
| 09/14/1994 | CN1092225A 无线电接收机 Radio receiver |
| 09/07/1994 | EP0613601A1 Headend processing for a digital transmission system |
| 09/06/1994 | US5345591 Receiving satellite switching apparatus |
| 08/17/1994 | EP0610438A1 Radio frequency broadcasting systems and methods using two low-cost geosynchronous satellites |
| 08/17/1994 | EP0610367A1 Information broadcasting system and method |
| 08/16/1994 | US5339110 Sound multiplex broadcast receiver and method of controlling display thereof |
| 08/02/1994 | US5335277 Signal processing appparatus and methods |
| 07/14/1994 | DE4344789A1 Signal detection circuit for broadcast road traffic information |
| 07/07/1994 | DE4243967A1 Change=over switching appts. for satellite broadcast reception systems |
| 06/29/1994 | EP0603656A2 Method and apparatus for eliminating the frequency-offset of received signals in a digital transmission system |
| 06/22/1994 | EP0602438A1 RDS broadcast receiver |
| 06/21/1994 | US5323396 Digital transmission system, transmitter and receiver for use in the transmission system |
| 06/15/1994 | EP0601743A1 Tuning of a radio receiver |
| 06/09/1994 | WO1994013071A1 Method and receiver for terrestrial digital radio transmission |
| 06/07/1994 | US5319673 Radio frequency broadcasting systems and methods using two low-cost geosynchronous satellites |
| 06/01/1994 | EP0599825A2 Digital transmission system for transmitting an additional signal such as a surround signal |
| 06/01/1994 | EP0599824A2 Intensity-stereo encoding and decoding in a transmission system |
| 06/01/1994 | EP0599330A1 RDS receiver |
| 06/01/1994 | DE4239759A1 Switching to receivable alternative frequency of RDS receiver - switching reception frequency from instantaneous one to that of another station, when changeover condition exists |
| 05/26/1994 | DE4239509A1 Verfahren und Empfänger für die terrestrische digitale Rundfunkübertragung Method and receiver for terrestrial digital broadcasting |
| 05/24/1994 | US5315583 Method and apparatus for digital audio broadcasting and reception |
| 05/18/1994 | EP0597255A1 Receiver for digital audio broadcast with digital signal processing |
| 05/11/1994 | EP0595797A1 Method and system for receiving and distributing satellite transmitted television signals |
| 05/03/1994 | CA2017483C Fm stereophonic receiver |
| 04/28/1994 | DE4235876A1 Conductor bus for satellite or cable TV systems - has several parallel stripline conductors in spacer blocks with multi-pin connectors across them and isolator switches |
| 04/27/1994 | EP0593850A2 Method and apparatus for subband filtering of a stereo audio signal |
| 04/21/1994 | DE4234603A1 RDS demodulator and error-corrector - delays received signals, demodulates and corrects errors according to threshold cross-over of demodulated signals |
| 04/13/1994 | EP0591842A1 Method and apparatus for concealing bit errors and interpolations in digital sound signals |
| 04/13/1994 | EP0591655A1 RDS broadcast receiver |
| 04/05/1994 | US5301352 Satellite broadcast receiving system and change-over divider for use in same |
| 03/31/1994 | WO1994007314A1 Method for synchronising transmitter frequencies in common wave digital audio broadcast |
| 03/24/1994 | DE4235916C1 Satellite channel processing system - has all interfaces between channel processing modules to input distributor and output collector fields and power supply provided on sub-module. |
| 03/23/1994 | EP0588121A1 RDS-broadcast receiver with a means for clickless change-over to alternative frequencies |
| 03/22/1994 | US5297209 System for calibrating sound field |
| 03/10/1994 | DE4327117A1 Satellite antenna signal distributor - uses series circuit of stripline directional couplers supplying respective subscribers |
| 01/27/1994 | DE4240851C1 Frequency modulated signal demodulator - uses phase locked loop used for demodulation of additionally receivable difference-coded quadrature-phase shift keyed signals |
| 01/11/1994 | US5278863 Radio frequency broadcasting systems and methods using two low-cost geosynchronous satellites |
| 01/11/1994 | US5278844 Method and apparatus for digital audio broadcasting and reception |
| 01/11/1994 | US5278826 Method and apparatus for digital audio broadcasting and reception |
| 01/04/1994 | US5276904 Antenna system |
| 11/30/1993 | CA1324815C Display for radio receiver having station format selection capability |
| 11/16/1993 | US5263182 Low-noise block converter for a satellite broadcasting system |
| 10/11/1993 | WO1993021717A1 Radio frequency broadcasting systems and methods using two low-cost geosynchronous satellites |
| 09/28/1993 | US5249043 Device for dispatching video and/or audio signals between several receivers |
| 09/15/1993 | EP0559831A1 Method and apparatus for transmitting, receiving and communicating data signals with corresponding program data signals |
| 09/02/1993 | WO1993017509A1 Demodulator for radio data signals |
| 09/02/1993 | DE4205016A1 Demodulator for radio data signals - provides data pulse signal with one of two levels depending on difference between phases of received and delayed signals. |
| 09/02/1993 | DE4205015A1 Demodulator for radio data signals - provides data pulse of one of two levels depending on sign of difference between phases of received signal and delayed signal |
| 08/26/1993 | DE4205014A1 Demodulator for radio data signals in car radio - compares phase of two rectangular signals to provide flank of demodulated radio data signal |
| 08/25/1993 | CN1075581A Headend proctessing for a digital transmission system |
| 08/24/1993 | US5239540 Method and apparatus for transmitting, receiving and communicating digital data signals with corresponding program data signals which describe the digital data signals |
| 08/19/1993 | DE4204179A1 Reproducing audio signals with delay for satellite teleconferencing - providing feedback of speech with correction for delay or at lower level than original speech component of audio transmission |
| 08/03/1993 | US5233654 Signal processing apparatus and methods |
| 06/30/1993 | EP0548844A2 Satellite broadcasting reception system |
| 06/17/1993 | DE4242548A1 Automatic audio signal tuner for multiplex transmission systems - detects digital audio signal in dependence on PCM clock signal derived from multiplex type discrimination circuit |
| 06/15/1993 | US5220430 Sound control signal detecting circuit for satellite broadcasting signals |
| 06/09/1993 | EP0545245A2 Digital oscillator |
| 05/27/1993 | WO1993010606A1 Headend processing for a digital transmission system |
| 05/27/1993 | CA2123778A1 Headend processing for a digital transmission system |
| 05/25/1993 | US5214787 Multiple audio channel broadcast system |
| 05/13/1993 | WO1993009631A1 Information broadcasting system and method |
| 05/11/1993 | US5210796 Stereo/monaural detection apparatus |
| 05/06/1993 | DE4136068A1 Radio broadcast transmission system for VHF-FM and-or AM signals - uses transmitted control signal for reception of both digital audio broadcasting signal or digital satellite radio signal |
| 05/06/1993 | DE4135747A1 Multichannel sound signal transmission procedure with interference correction - using introduced time difference between transmitted signal preceded by defined phase difference used to provide matrix signals |
| 05/05/1993 | EP0539799A2 Main station for satellite receiving installation |
| 04/29/1993 | WO1993008657A1 Method of transmitting digitized stereophonic sound signals over radio channels subject to interference |
| 04/29/1993 | DE4135121A1 Connection socket system for satellite dish receivers - has diode arrangement built into socket for controlling DC supply direction |
| 04/29/1993 | DE4135005A1 Verfahren zum uebertragen digitalisierter, stereofoner tonsignale ueber stoerbehaftete rundfunkkanaele A method for digitized by wear, stereophonic audio signals to interference rundfunkkanaele |
| 04/29/1993 | CA2122010A1 Method of transmitting digitized stereophonic sound signals over radio channels subject to interference |
| 04/28/1993 | EP0296175B1 Method and installation for digital communication, particularly between and toward moving vehicles |
| 04/06/1993 | US5201001 Pilot signal cancelling system |
| 03/16/1993 | US5195109 Digital radio receiver with program-controlled mixing oscillator frequency |
| 03/11/1993 | DE4128947A1 Satellite communication system signal distribution circuit - has two branches for converted and unconverted polarisation signals and includes three filters |
| 03/10/1993 | EP0531028A2 Multi-transmitter wide-area cellular broadcast communication system |
| 03/07/1993 | CA2076942A1 Multi-transmitter wide-area cellular broadcast communication system |
| 03/02/1993 | US5191576 Method for broadcasting of digital data, notably for radio broadcasting at high throughput rate towards mobile receivers, with time frequency interlacing and analog synchronization |
| 02/03/1993 | EP0526136A2 System for calibrating sound field |
| 01/28/1993 | DE4124720A1 Satellite receiver high frequency signal switch=over device - intercepts polarised HF signals for single or multiple antenna installations by using distribution matrix |
| 01/28/1993 | DE4124719A1 Multi-source satellite receiver system - receives polarised electromagnetic waves emitted from two different geostationary satellites |
| 01/19/1993 | US5181208 Computation-conserving traffic data transmission method and apparatus |
| 01/07/1993 | EP0521732A2 Antenna system for receiving broadcast or communication signals from satellite |
| 12/09/1992 | EP0517556A1 Method for demodulating RDS signals in a digital way, and demodulator to perform this method |
| 12/09/1992 | EP0517237A2 Apparatus for receiving FM stereo radio signals, with associated data subcarrier,broadcast in the VHF and UHF bands in association with a conventional video signal |
| 11/24/1992 | US5166798 Color TV with satellite broadcast receiver internally installed |
| 11/11/1992 | EP0512245A1 Device for free choise of programm locations in a receiver for digital satellite radio signals |
| 10/15/1992 | WO1992017948A1 Process for transmitting digitized audio signals |
| 10/08/1992 | DE4111131A1 Verfahren zum uebertragen digitalisierter tonsignale A method for digitized audio signals carry over |