| Patents for H04H 40 - Arrangements specially adapted for receiving broadcast information (5,791) |
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| 09/21/1983 | EP0089088A1 FM receiver for receiving FM signals with transmission identification |
| 09/20/1983 | CA1154096A1 Multiplex signal receiver |
| 09/13/1983 | US4404432 Stereo identifying signal detection device |
| 09/13/1983 | US4404431 AM Stereo receiver |
| 09/13/1983 | US4404430 FM Stereo demodulation circuit with voltage dividing and multiplexing techniques |
| 09/13/1983 | US4404428 Detector for sub signal of modulated AM stereophonic signal |
| 09/06/1983 | US4403113 Circuit for cancelling sinusoidal pilot signal contained in composite signal |
| 08/16/1983 | US4399325 Demodulating circuit for controlling stereo separation |
| 08/16/1983 | US4399324 Multiplex demodulation circuit |
| 07/12/1983 | US4393274 AM Stereo receiver |
| 07/12/1983 | US4393273 FM-Receiver with transmitter characterization |
| 06/29/1983 | EP0082205A1 Television voice multiplex signal reproducing circuit |
| 06/28/1983 | US4390746 Stereo signal demodulator having an improved separation characteristic |
| 05/31/1983 | US4386235 FM Stereo demodulator circuit |
| 05/31/1983 | CA1147394A1 Apparatus for receiving an am stereophonic signal |
| 01/11/1983 | US4368355 AM Stereophonic signal receiver with electric field strength detection |
| 01/11/1983 | US4368354 Discriminator apparatus for detecting the presence of a signal by using a differential beat signal having an inaudible frequency |
| 12/23/1982 | WO1982004517A1 Television voice multiplex signal reproducing circuit |
| 12/07/1982 | US4362906 FM Receiver |
| 11/30/1982 | US4361728 Multiplex signal receiver |
| 11/09/1982 | US4358638 Apparatus for receiving an AM stereophonic signal |
| 10/26/1982 | US4356568 Receptive condition automatic selection device for FM receiver |
| 10/26/1982 | US4356350 FM Receiver |
| 08/31/1982 | US4347404 Control device for an automotive vehicle FM radio |
| 08/25/1982 | EP0058417A2 Method for transmitting time-division multiplexed data |
| 07/28/1982 | EP0056464A2 Pulsive noise removing apparatus |
| 07/13/1982 | US4339631 Phase control device |
| 07/13/1982 | CA1127717A1 Reduction of adjacent channel interference |
| 06/08/1982 | US4334125 Stereo demodulator circuit |
| 04/20/1982 | CA1122278A1 Apparatus and method for the identification of specially encoded fm stereophonic broadcasts |
| 03/17/1982 | EP0047522A2 Stereo identifying signal detection device |
| 12/15/1981 | US4306112 Stereophonic receiver noise eliminating device |
| 12/08/1981 | US4305061 Electrical filter and signal discriminating apparatus employing the same |
| 11/24/1981 | US4302837 FM Multiplex system for selectively delaying one of two audio signals |
| 11/10/1981 | US4300020 Method and apparatus for eliminating pilot signal components from stereo demodulated signals |
| 10/13/1981 | CA1110720A1 Fm multiplex system for selectively delaying one of two audio signals |
| 09/08/1981 | US4288752 Stereo demodulator with high frequency de-emphasis compensation |
| 08/05/1981 | EP0033218A1 A message broadcasting and/or receiving system |
| 07/28/1981 | US4281217 Apparatus and method for the identification of specially encoded FM stereophonic broadcasts |
| 07/21/1981 | US4280101 Stereophonic signal demodulation circuit |
| 07/14/1981 | US4278944 Chopper type switching circuit |
| 06/30/1981 | CA1104212A1 Fm stereophonic receiver having muting and mode changing |
| 06/16/1981 | US4274057 MPX Stereophonic demodulation |
| 06/16/1981 | US4273958 Quadrature receiver |
| 06/09/1981 | US4272788 Receiver for television sound multiplex broadcasting and FM stereo multiplex broadcasting |
| 05/05/1981 | US4266296 Multipath distortion compensation circuit and method |
| 02/17/1981 | US4251690 Frequency-modulation stereophonic receiver |
| 01/20/1981 | US4246441 FM Receiver equipped with noise pulse supression device |
| 01/06/1981 | US4244056 Noise reduction circuit |
| 11/25/1980 | US4236041 Stereophonic signal indicating apparatus |
| 11/04/1980 | US4232191 FM Receiving device |
| 10/07/1980 | US4227221 PCM Recording apparatus |
| 09/30/1980 | US4225751 Variable-angle, multiple channel amplitude modulation system |
| 09/09/1980 | CA1085469A1 Stereo demodulation system |
| 07/29/1980 | US4215316 AM stereo signal demodulation circuit |
| 07/15/1980 | CA1081804A1 Circuit for demodulating a stereo signal |
| 07/09/1980 | EP0013149A1 FM stereo signal demodulator |
| 07/08/1980 | US4211979 Circuit arrangement for eliminating waveform distortion of an angle-modulated signal transmitted over multipaths |
| 06/10/1980 | US4207432 Noise eliminating system |
| 05/20/1980 | CA1078022A1 Fm receiver |
| 04/22/1980 | CA1076220A1 Balanced synchronous detector circuit |
| 04/01/1980 | US4196310 Secure SCA broadcasting system including subscriber actuated portable receiving terminals |
| 03/04/1980 | US4191851 FM Noise suppressor |
| 09/11/1979 | US4167650 Stereo signal demodulating circuits |
| 09/04/1979 | US4166925 FM stereo demodulator |
| 08/14/1979 | US4164624 Demodulation circuits of FM stereophonic receivers |
| 06/05/1979 | US4157455 FM stereophonic receiver having muting and mode changing |
| 03/27/1979 | US4146747 Fm stereo demodulating device |
| 02/20/1979 | US4140878 Stereo demodulator system |
| 02/13/1979 | US4139738 Multiplex decoder having a distortion-free differential amplifier |
| 02/13/1979 | US4139728 Signal processing circuit |
| 01/23/1979 | CA1047181A1 Indicating circuit for an fm stereophonic signal receiver |
| 12/19/1978 | US4130805 Noise clearing system |
| 12/19/1978 | US4130801 Audio message broadcast system |
| 10/31/1978 | US4123714 FM Receiver with liquid crystal signal indicator |
| 09/26/1978 | CA1039365A1 Signal transfer circuit |
| 05/30/1978 | US4092602 Automatic frequency control for FM-receiver |
| 05/16/1978 | US4090148 Circuit pattern for a protection circuit of a stereo amplifier |
| 02/28/1978 | US4076963 Pilot signal cancelling circuit for FM multiplex demodulator |
| 02/14/1978 | US4074075 Circuit for demodulating a stereo signal |
| 01/24/1978 | US4070628 Radio receiver with selective plural band reception |
| 01/17/1978 | US4069398 Method and apparatus for pilot signal cancellation in an FM multiplex demodulator |
| 01/03/1978 | US4066845 Pulsive noise removing apparatus for an FM receiver |
| 12/13/1977 | US4063184 Signal transfer circuit |
| 10/18/1977 | US4054839 Balanced synchronous detector circuit |
| 09/06/1977 | US4047116 FM multiplex stereo demodulating circuit |
| 07/19/1977 | US4037165 Synchronous signal generating system with phase-locked loop circuit |
| 07/19/1977 | US4037056 FM multiplex demodulator circuit |
| 05/11/1976 | US3956594 Indicating circuit for an FM stereophonic signal receiver |
| 04/13/1976 | US3950620 Electric circuit containing an integral phase-locked loop |
| 03/30/1976 | US3947645 Demultiplexer for FM stereophonic receivers |