| Patents for H03D 1 - Demodulation of amplitude-modulated oscillations (4,890) |
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| 05/22/1979 | US4156255 Television receiver with synchronous detection and automatic fine tuning |
| 05/22/1979 | US4156195 Receiver having a phase-locked loop |
| 05/08/1979 | US4153876 Charge transfer device radio system |
| 04/03/1979 | US4147984 Dual digital processor transceiver |
| 03/27/1979 | US4146843 Phase synchronizing arrangement for video synchronous detection |
| 03/27/1979 | US4146747 Fm stereo demodulating device |
| 03/20/1979 | US4145663 Digital synchronous detectors using time division for extracting carrier wave and demodulated signals |
| 03/20/1979 | US4145656 Transceiver capable of sensing a clear channel |
| 03/20/1979 | US4145655 Digitally transmitting transceiver |
| 03/20/1979 | CA1050897A1 Noise tolerant receiver |
| 03/06/1979 | US4143330 Detector circuit |
| 03/06/1979 | CA1050125A1 Synchronous demodulator circuit |
| 02/27/1979 | US4142241 Harmonic insensitive phase sensitive demodulator |
| 02/20/1979 | US4140975 Highly selective programmable filter module |
| 02/20/1979 | US4140878 Stereo demodulator system |
| 02/13/1979 | US4139738 Multiplex decoder having a distortion-free differential amplifier |
| 01/30/1979 | US4137499 Signal strength measuring transceiver |
| 01/23/1979 | US4136288 Frequency translation circuits |
| 01/16/1979 | US4135158 Universal automotive electronic radio |
| 01/02/1979 | US4132951 Digital processor controlled radio system |
| 01/02/1979 | US4132950 Clarifying radio receiver |
| 12/19/1978 | US4130839 Circuitry for a facsimile receiver for regeneration of carrier for an amplitude modulated suppressed carrier signal |
| 12/05/1978 | CA1043873A1 Detecting circuit |
| 11/21/1978 | US4126831 Electronic phase detector circuit |
| 11/21/1978 | CA1042990A1 Radio receiver with a phase locked loop for a demodulator |
| 10/31/1978 | US4123712 Symmetrical polyphase network |
| 10/24/1978 | CA1041183A1 Balanced dual output mixer circuit |
| 09/26/1978 | CA1039365A1 Signal transfer circuit |
| 08/29/1978 | US4110635 Amplifying circuit |
| 08/08/1978 | US4105981 Synchronous demodulation device |
| 08/01/1978 | US4104594 Modified A. M. detector |
| 06/06/1978 | US4093824 Receiver having a phase-locked loop |
| 05/23/1978 | US4091453 Low offset AC correlator |
| 05/23/1978 | US4091410 Frequency and phase lock loop synchronous detecting system having a pair of phase lock conditions |
| 05/16/1978 | US4090145 Digital quadrature demodulator |
| 02/28/1978 | US4076963 Pilot signal cancelling circuit for FM multiplex demodulator |
| 02/21/1978 | US4075571 Externally biased video detector circuit for limiting clutter and noise in a detected radar signal |
| 02/14/1978 | US4074075 Circuit for demodulating a stereo signal |
| 01/17/1978 | US4069398 Method and apparatus for pilot signal cancellation in an FM multiplex demodulator |
| 12/13/1977 | US4063184 Signal transfer circuit |
| 12/13/1977 | US4063042 Circuit arrangement for decoding a frequency modulated stereo radio signal |
| 10/18/1977 | US4054839 Balanced synchronous detector circuit |
| 09/20/1977 | US4049918 MPX stereo signal demodulator |
| 09/06/1977 | US4047116 FM multiplex stereo demodulating circuit |
| 08/30/1977 | US4045796 Correlation system for pseudo-random noise signals |
| 07/26/1977 | US4038684 Signal detection circuit |
| 07/19/1977 | US4037171 High speed tone decoder utilizing a phase-locked loop |
| 07/19/1977 | US4037165 Synchronous signal generating system with phase-locked loop circuit |
| 07/19/1977 | US4037056 FM multiplex demodulator circuit |
| 07/12/1977 | US4035585 Demodulator circuit in multiplex stereo and monophonic receiver |
| 06/28/1977 | US4032967 Complementary field effect transistor signal multiplier |
| 06/28/1977 | US4032717 Circuit arrangement for a continuous adjustment of the base width in a stereo decoder |
| 06/21/1977 | US4031479 Peak detecting demodulator |
| 06/14/1977 | US4030016 Precision active rectifier circuit |
| 06/07/1977 | US4028638 Stabilized crystal controlled oscillator |
| 05/24/1977 | US4025870 Low distortion amplifier having high slew rate and high output impedance |
| 05/17/1977 | US4024414 Electrical circuit means for detecting the frequency of input signals |
| 04/12/1977 | US4017812 Method of processing a signal, and corresponding devices |
| 03/01/1977 | US4010424 Phase-sensitive detector circuit with compensation for offset error |
| 01/11/1977 | US4002991 Pilot signal extracting circuitry |
| 12/28/1976 | US4000472 Amplitude modulation envelope detector with temperature compensation |
| 12/21/1976 | US3999138 Detector for AM-FM signals |
| 11/16/1976 | US3992674 Balanced dual output mixer circuit |
| 11/09/1976 | US3991327 Film circuit |
| 10/26/1976 | US3988598 Multipurpose semiconductor circuits utilizing a novel semiconductor device |
| 09/14/1976 | US3980971 Modulator for hybrid modulation by more and less significant digital signals in succession in each clock interval and counterpart demodulator |
| 09/14/1976 | US3980900 Multipurpose switching circuits utilizing a novel semiconductor device |
| 08/10/1976 | US3974453 Stereophonic signal demodulator for a pair of composite signals with different AC signal levels and the same DC signal level |
| 08/03/1976 | US3973180 Voltage boosting detector circuit |
| 07/27/1976 | US3971998 Recursive detector-oscillator circuit |
| 07/20/1976 | US3970870 Signal rectifying circuit |
| 06/22/1976 | US3965435 Circuit for demodulating an amplitude modulated signal |
| 06/08/1976 | US3962551 Methods and systems for providing stereo decoding signals |
| 06/08/1976 | US3962533 Television receiver |
| 06/01/1976 | US3961135 Synchronized demodulation system |
| 05/04/1976 | US3955142 Single-sideband radiotelephone system |
| 05/04/1976 | US3955105 Synchronous detector |
| 04/27/1976 | US3953805 DC component suppression in zero CF IF systems |
| 04/13/1976 | US3950620 Electric circuit containing an integral phase-locked loop |
| 04/06/1976 | US3949294 Level indicating system |
| 03/30/1976 | US3947645 Demultiplexer for FM stereophonic receivers |
| 03/16/1976 | US3944938 Phase correlator |
| 03/16/1976 | US3944932 Receiver filtering out both systematic pulse noise and random noise |
| 02/24/1976 | US3940716 Double-balanced modulating and demodulating apparatus |
| 02/24/1976 | US3940681 Wide amplitude range detecting circuit |
| 02/17/1976 | US3939425 Noise-squelching circuit using a phase-locked loop |
| 02/17/1976 | US3939424 Radio receiver with a phase locked loop for a demodulator |
| 02/17/1976 | US3939341 Phase-locked optical homodyne receiver |
| 02/03/1976 | US3936720 Half-wave rectifier circuit |
| 02/03/1976 | US3936599 Automatic gain control system |