H03G 3 - Gain control in amplifiers or frequency changers

Patents for H03G 3 - Gain control in amplifiers or frequency changers (20,162)
09/1992
09/03/1992	WO1992015155A1 Interference reduction system
09/02/1992	EP0501448A2 Gain control circuitry for QAM demodulator
09/02/1992	EP0500700A1 High fidelity hearing aid amplifier.
09/01/1992	US5144258 Power amplifier system for radio transmitter and method for using the same
09/01/1992	US5144114 Volume control apparatus
08/1992
08/28/1992	WO1992016056A1 Circuit for sensing pulse-like noise in am receiver
08/25/1992	US5142695 Cellular radio-telephone receiver employing improved technique for generating an indication of received signal strength
08/20/1992	WO1992014313A1 Adjusting the level of an audio signal
08/20/1992	WO1992014302A1 Amplification circuit with exponential gain control
08/20/1992	WO1992014301A1 Gain linearity correction circuit for mos circuits
08/18/1992	US5140704 Pulse noise suppressing system for fm receiver
08/18/1992	US5140656 Soliton optical fiber communication system
08/18/1992	US5140283 Time variant analog signal switching apparatus including switching transient avoidance
08/12/1992	EP0498003A1 Integrated circuit for detecting signals freed of background noise
08/12/1992	EP0298959B1 Fm receiver with noise suppression during rayleigh faded received signals
08/11/1992	US5138280 Multichannel amplifier with gain matching
08/11/1992	US5138277 Signal processing system having a very long time constant
08/11/1992	US5138274 Linear amplifier circuit
08/06/1992	DE4202609A1 Controlling reproduction sound level for matching to listening chamber - by regulating loudspeaker signal according to difference between generated and detected auditorium test signal
08/05/1992	EP0472621A4 Method and apparatus for reducing intermodulation distortion
08/04/1992	US5136265 Discrete increment signal processing system using parallel branched n-state networks
08/04/1992	US5136257 RF amplifier bias circuit
07/1992
07/29/1992	EP0496507A2 Gain control in a TDMA radio-telephone system
07/28/1992	US5134722 Automatic gain control system
07/28/1992	US5134631 Digital gain controller
07/23/1992	DE4142472A1 Audio signal balance compensating circuit for stereo transmission - has generator of two comparison signals under response to two compensating signals
07/22/1992	EP0495653A1 Audio equipment
07/22/1992	EP0495360A2 Arrangement for volume control in a hands free telephone device
07/22/1992	EP0495141A1 Amplitude control circuit
07/21/1992	US5132634 Amplifier circuit with envelope smoothing
07/21/1992	US5132632 Frequency multiplier
07/21/1992	US5132609 Circuit for measuring the level of an electrical signal and including offset correction means, and application thereof to amplifiers having automatic gain control
07/21/1992	CA1305527C Speaker driver
07/17/1992	WO1992013408A1 Intermodulation compensation in a receiver
07/17/1992	WO1992013404A1 Amplitude control of a burst signal in a receiver
07/17/1992	CA2059474A1 Audio equipment
07/15/1992	EP0494198A1 Instrumentation amplifier with automatic gain control
07/15/1992	CN1062817A Controlled slew rate amplifier
07/15/1992	CN1062816A Dynamically biased amplifier
07/14/1992	US5131046 High fidelity hearing aid amplifier
07/14/1992	US5130665 Audio volume level control
07/14/1992	US5130567 Bipolar transistor arrangement with distortion compensation
07/08/1992	EP0493956A2 Baseband signal processing circuit for a radio communication apparatus
07/07/1992	US5129098 Radio telephone using received signal strength in controlling transmission power
07/07/1992	US5129006 Electronic audio signal amplifier and loudspeaker system
07/07/1992	US5128723 Scavengeless development system having toner deposited on a doner roller from a toner mover
07/07/1992	US5128629 Method for controlling the output power of digital cellular telephones
06/1992
06/30/1992	US5127059 Audio amplifiers
06/30/1992	US5127058 Gain controller
06/30/1992	US5126703 Signal attenuator
06/30/1992	US5126688 Power amplifying apparatus for wireless transmitter
06/30/1992	US5126686 RF amplifier system having multiple selectable power output levels
06/24/1992	CN1062248A Audio levet equalization of broadcast fm and narrow frequency deviation fm radio signals
06/23/1992	US5124967 Automatic gain control method and apparatus in optical disk system
06/23/1992	US5124673 Level independent automatic cable equalizer
06/23/1992	US5124665 Circuit for reducing distortion produced by an r.f. power amplifier
06/21/1992	WO1992011705A1 Power control circuitry for a tdma radio frequency transmitter
06/18/1992	WO1992011702A1 Dynamically biased amplifier
06/17/1992	EP0490076A1 Gain control circuit in a detection circuit of knocking signals
06/17/1992	EP0489936A1 Method to detect amplitude and offset variations in two electrical sinusoidal signals 90 degrees out of phase and also circuitry to implement this method and the use of this method in a control system
06/17/1992	EP0489751A1 Improved low power dsp squelch
06/16/1992	US5122760 Detector for automatic gain control amplifier circuit
06/11/1992	WO1992010045A1 Data muting method and apparatus for communication systems
06/11/1992	WO1992010028A1 High dynamic range closed loop automatic gain control circuit
06/10/1992	EP0489645A2 Voice level controller
06/10/1992	EP0489276A1 Modulation device for a high-frequency power amplifier
06/10/1992	EP0489081A1 Gain/phase compensation for linear amplifier feedback loop
06/09/1992	US5121081 Output waveform control circuit
06/09/1992	US5121076 Plural time constant signal control
06/09/1992	US5121075 Precision programmable attenuator
06/09/1992	US5121073 Fm demodulator arrangement including hold, delay and switching circuits to compensate for signal disturbances
06/03/1992	EP0488545A2 Ultrasonic doppler blood-flow meter
06/03/1992	EP0488385A1 Fet amplifier with gate voltage control
06/03/1992	EP0312569B1 Method and apparatus for improving voice intelligibility in high noise environments
06/02/1992	US5119042 Solid state power amplifier with dynamically adjusted operating point
06/02/1992	CA1302296C Muting circuit in a digital audio system
05/1992
05/27/1992	EP0487484A1 Improvement to the controls of vehicle audio/video apparatuses
05/27/1992	EP0487133A2 High efficiency power audio amplifier comprising two amplifiers with a single feed
05/27/1992	EP0486538A1 Circuit arrangement for automatic gain control.
05/26/1992	US5117203 Phase stable limiting power amplifier
05/26/1992	US5117202 Automatic level control circuit
05/26/1992	US5117201 Automatic gain control apparatus for digital variable-gain amplifier
05/26/1992	CA1301863C Gain controlled amplifier circuit
05/26/1992	CA1301860C Circuits with multiple controlled gain elements
05/26/1992	CA1301859C Automatic gain control circuit
05/21/1992	DE4036730A1 Shaping circuit for digital vol. command in audio systems - uses low-pass filter that avoids clicking noise when sudden change, in volume occurs
05/19/1992	US5115327 Gain control circuit for use in shading compensation circuit
05/19/1992	US5115207 Automatic signal parameter control
05/19/1992	US5115203 Digital power amplifier
05/19/1992	CA1301301C Borehole imaging apparatus
05/14/1992	WO1992008281A1 Electronic volume device
05/13/1992	EP0484476A1 Digital automatic gain control
05/12/1992	US5113525 Linear-modulation type radio transmitter
05/12/1992	US5113192 Method for using seismic data acquisition technology for acquisition of ground penetrating radar data
05/12/1992	US5113156 Low power crystal oscillator with automatic gain control
05/12/1992	US5113151 Equalizing and amplifying circuit in an optical signal receiving apparatus
05/12/1992	US5113149 Variable gain amplifier
05/06/1992	EP0483701A2 Method of noise reduction in hearing aids
05/06/1992	EP0252149B1 Traveling wave tube drive controller
05/05/1992	US5111159 Amplifier circuit with open-loop gain that can be varied with respect to closed-loop gain

1 ... 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 ... 202