| Patents for H03G 3 - Gain control in amplifiers or frequency changers (20,162) |
|---|
| 08/05/1980 | US4216502 Peak detector circuit |
| 08/05/1980 | US4216434 Variable gain alternating voltage amplifier |
| 08/05/1980 | US4216431 Integrated circuit for frequency conversion |
| 08/05/1980 | US4216430 Noise eliminating circuit with automatic gain control |
| 08/05/1980 | US4216427 Adaptive audio compressor |
| 07/24/1980 | WO1980001529A1 Multiple program audio system |
| 07/22/1980 | CA1082314A1 Receiver automatic gain control system |
| 07/15/1980 | US4213151 AGC keying signal circuit |
| 07/15/1980 | US4213097 Hybrid automatic gain control circuit |
| 07/15/1980 | US4213065 Device for providing a selectively variable proportion of an electrical signal |
| 07/15/1980 | CA1081791A1 Am receiver |
| 07/01/1980 | US4210874 Gain control amplifier circuit |
| 07/01/1980 | US4210873 Gain and impedance switching circuit for an amplifier |
| 07/01/1980 | CA1080815A1 Automatic level control circuit |
| 07/01/1980 | CA1080808A1 Radio receiver blanker gate |
| 06/25/1980 | EP0012709A1 Circuit for an electrocardiographic signal |
| 06/24/1980 | US4209805 Video signal processing circuit including lock-out prevention means for the intermediate frequency amplifier thereof |
| 06/24/1980 | US4209753 Amplifier programmable in gain and output polarity |
| 06/17/1980 | US4208634 Circuit for suppressing noise caused by scratches on a phonograph record |
| 06/17/1980 | US4208632 Radar receiver |
| 06/17/1980 | US4208548 Apparatus and method for peak-limiting audio frequency signals |
| 06/12/1980 | WO1980001224A1 Amplitude control circuits |
| 06/10/1980 | US4207530 Electrically tunable inductor and method |
| 06/10/1980 | US4207527 Pre-processing apparatus for FM stereo overshoot elimination |
| 06/10/1980 | US4207526 Pre-processing apparatus for FM stereo overshoot elimination |
| 06/10/1980 | US4207432 Noise eliminating system |
| 06/10/1980 | CA1079362A1 Adaptive audio compressor |
| 06/03/1980 | US4206415 Audio amplitude detector circuit |
| 05/28/1980 | EP0011233A1 Audible signal generator with automatic volume control dependent on the ambient noise level |
| 05/27/1980 | US4205275 Method and apparatus of controlling bias voltage in regulating amplifiers |
| 05/27/1980 | US4205274 Power amplifier circuit |
| 05/27/1980 | CA1078535A1 Composite colour signal processing circuit |
| 05/20/1980 | US4204172 Automatic gain control device for a single-sideband receiver |
| 05/20/1980 | US4204169 Muting circuit in an electronic tuning type receiver |
| 05/20/1980 | US4204164 Noise detector circuit |
| 05/14/1980 | EP0010682A1 Device for transmitting analogue signals over an optical link |
| 05/13/1980 | US4203134 FM Signal demodulator with defect detection |
| 05/13/1980 | US4203073 Radio receiver blanker gate |
| 05/13/1980 | US4203072 Reduction of impulse noise contribution to receiver squelch threshold |
| 05/06/1980 | US4201895 Passive audio signal mixing apparatus |
| 05/06/1980 | CA1077170A1 Apparatus and method for transmitting binary-coded information |
| 04/30/1980 | EP0010109A1 Method and arrangement for indicating the reception quality of a frequency modulated very high frequency signal |
| 04/29/1980 | CA1076651A1 Blanker inhibit circuit |
| 04/22/1980 | US4199730 Double peaked amplifier |
| 04/22/1980 | US4199725 FM Receiver muting range setting circuit |
| 04/22/1980 | US4199723 Automatic modulation control apparatus |
| 04/16/1980 | EP0010022A1 Device for conditioning speech signals and transmitter comprising such a device |
| 04/16/1980 | EP0009599A1 Circuit for reducing the noise in the read-signal of a magnetic layer memory |
| 04/15/1980 | US4198652 D.C. Gain controlled amplifier |
| 04/15/1980 | US4198603 Radio receiver audio attenuator |
| 04/15/1980 | US4198541 Signal holding circuit |
| 04/15/1980 | CA1075773A1 Am-fm receiver having improved mode conversion |
| 04/02/1980 | EP0009220A1 System for transmitting signals over an optical link |
| 03/25/1980 | US4195267 Low-level preamplifier circuit |
| 03/25/1980 | US4195203 Noise cancelling system for FM receiver |
| 03/19/1980 | EP0008913A1 Variable level converter |
| 03/18/1980 | US4194165 Miniature guitar amplifier |
| 03/18/1980 | US4194164 Variable frequency sources |
| 03/18/1980 | US4194163 Floating point amplifier means and method |
| 03/18/1980 | US4194087 Control circuit and FM stereo receiver using same |
| 03/18/1980 | CA1073973A1 Current control circuit |
| 03/18/1980 | CA1073820A1 System for reducing noise transients in recorded sound signals |
| 03/18/1980 | CA1073749A1 Method of and furnace for burning waste material |
| 03/04/1980 | US4191995 Digital automatic gain control circuit |
| 03/04/1980 | US4191851 FM Noise suppressor |
| 03/04/1980 | US4191850 Interferences reduction for use in an FM radio receiver |
| 03/04/1980 | CA1073056A1 Optical pulse transmission system |
| 02/26/1980 | US4190891 System having a fixed excitation and providing a variable ratio output |
| 02/19/1980 | US4189679 Noise detecting circuit having noise-immune AGC |
| 02/12/1980 | US4188587 Linear gain control apparatus utilizing feed forward level control |
| 02/12/1980 | CA1071717A1 Arrangement for producing pulse-shaped signals |
| 02/06/1980 | EP0007781A1 Method and apparatus for controlling the current supplied to a load |
| 02/05/1980 | US4187544 Automated mixing system with display/data entry subsystem |
| 01/29/1980 | US4186354 Summing amplifier for developing a squelch and meter voltage in a radio receiver |
| 01/22/1980 | US4185251 Compensated automatic gain control |
| 01/22/1980 | US4185248 Input level supervisory system for level regulator |
| 01/22/1980 | US4185243 Method and apparatus for providing a standby signal |
| 01/22/1980 | CA1070391A1 Automatic noise limiter |
| 01/15/1980 | US4184178 Drop-out compensator for sound reproducing apparatus during tape reversal |
| 01/15/1980 | US4184125 Analog tuning voltage circuit with analog signal multiplexing |
| 01/01/1980 | US4181970 Digital attenuator for compressed PCM signals |
| 01/01/1980 | US4181895 Amplifier with muting circuit |
| 01/01/1980 | US4181889 Citizens band transmitter with overall envelope feedback from antenna coupling filter |
| 01/01/1980 | US4181818 Personal amplifier system |
| 12/18/1979 | US4179668 HF-amplifier circuit |
| 12/18/1979 | US4179667 Circuit arrangement for adjusting the volume of an automobile radio receiver in dependence on road noise |
| 12/18/1979 | US4179666 Method and circuit for controlling the output signal of a variable control circuit |
| 12/18/1979 | CA1068344A1 Technique for extending the range of a signal measuring circuit |
| 12/11/1979 | US4178552 Noise eliminating circuit |
| 12/04/1979 | CA1067588A1 Circuit arrangement for the demodulation of an amplitude-modulated signal |
| 11/15/1979 | WO1979000937A1 Intermediate frequency sensing circuit |
| 11/13/1979 | CA1066401A1 Gain control arrangement useful in a television signal processing system |
| 11/13/1979 | CA1066363A1 Radio receiver having co-channel interference operated squelch |
| 11/06/1979 | US4173773 Tape end alarm for tape recorder |
| 10/30/1979 | US4172996 Squelch circuit |
| 10/23/1979 | US4172239 Signal attenuator |
| 10/17/1979 | EP0004815A2 System for transmitting optically linked electrical signals and device for the automatic gain control of a receiver path connected to this optical linkage |
| 10/16/1979 | US4171516 Tone phase shift detector |
| 10/09/1979 | CA1064117A1 High speed fm and am demodulator |
| 10/09/1979 | CA1064111A1 Digital click removal and squelch control circuit for an fm receiver |