Patents
Patents for H03G 3 - Gain control in amplifiers or frequency changers (20,162)
01/1994
01/12/1994EP0578008A1 Vehicular radio receiver with speed compensated tone control
01/12/1994CN1080742A Reference voltage generator with cmos transistor
01/11/1994US5278997 Dynamically biased amplifier
01/11/1994US5278994 Power amplifier saturation detection and correction method and apparatus
01/11/1994US5278700 Differentiating amplifier responsive to track locations and variations of element values from desired values
01/11/1994US5278519 Method and apparatus for controlling RF spectral splatter into adjacent channels when activating an RF transmitter
01/11/1994US5278518 Amplifying circuit with exponential gain control
01/11/1994US5278517 FET amplifier with gate voltage control
01/11/1994CA2030355C Automatic gain control
01/05/1994EP0576770A1 Audio Amplifier turn-off control circuit
01/04/1994US5276921 Transmitter with nonlinearity correction circuit
01/04/1994US5276685 Digital automatic gain control
01/04/1994US5276562 Emphasis apparatus disposed in either a record or playback system having triple weight coefficient generating devices
12/1993
12/29/1993EP0576110A2 Device for linking acoustic signals
12/29/1993CN1023367C Controlled slew rate amplifier
12/28/1993US5274710 Pedal volume control for electric instruments
12/23/1993WO1993026094A1 Receiver automatic gain control
12/23/1993WO1993026090A1 Controlled-gain transistor amplifier without dc shift or signal phase reversal in load current
12/22/1993EP0574891A1 Method and device for amplifying
12/22/1993EP0326566B1 Adaptive correction of dc error transients
12/22/1993CN1079851A Controlled-gain Transistor amplifier without D-C shift or signal phase reversal in load current
12/15/1993EP0574117A1 Discriminating and suppressing incoming signal noise
12/14/1993US5271063 Controls for a vehicle audio/video apparatus
12/08/1993EP0573240A2 Reference voltage generator
12/08/1993EP0573192A1 Method and apparatus for muting switching noise while switching between CODECS
12/08/1993EP0573072A2 Power control device for controlling the output level in digitally modulated radio signals
12/08/1993EP0572755A1 Turn-on control circuit for electric devices
12/07/1993US5268964 Adjusting the level of an audio signal
12/07/1993CA2000434C Integrated compression amplifier having programmable threshold voltage
12/01/1993EP0571790A1 Television receiver with a gain control actuated by a microcomputer
12/01/1993EP0571747A2 Circuit arrangement for an optical receiver
12/01/1993EP0571512A1 Gain linearity correction circuit for mos circuits
11/1993
11/30/1993US5267322 Digital automatic gain control with lookahead, adaptive noise floor sensing, and decay boost initialization
11/30/1993US5267272 Receiver automatic gain control (AGC)
11/30/1993US5267071 Signal level control circuitry for a fiber communications system
11/25/1993DE4236473C1 HF TV amplifier compensation circuit - has number of parallel amplifiers controlled by averaged HF signal to provide independent control signal
11/24/1993EP0571079A1 Discriminating and suppressing incoming signal noise
11/24/1993EP0571078A1 Apparatus and method for attenuating received noise signals
11/24/1993EP0570897A2 Device for delivering an attenuator control signal
11/24/1993EP0570655A1 Audio amplifier on-off control circuit
11/24/1993CN1078837A Automatic adjusting circuit of analog controlling unit
11/24/1993CN1078831A Parallel transient floating point amplifier
11/18/1993EP0569688A1 Method and apparatus for fading compensation for TDMA-receivers
11/18/1993EP0569504A1 Intermodulation compensation in a receiver
11/16/1993US5263190 Vehicular radio receiver having muting circuitry for suppressing noises caused by receiver data pulses
11/16/1993US5263187 Automatic gain control circuit
11/16/1993US5263186 Control loop for reducing the time of repsonse of a tuner-AGC of a superheterodyne receiver and relative leading edge differentiating circuit used in the control loop
11/16/1993US5263184 Noise reducing circuit for a receiver using a fuzzy controller
11/16/1993US5263092 Digital volume control circuit
11/16/1993US5261407 Ultrasonic doppler blood-flow meter
11/16/1993CA2017904C High frequency amplifier circuit capable of optimizing a total power consumption
11/11/1993WO1993019466A3 Computer disk drive integrated data path circuit optimized for handling both data and servo signals
11/10/1993EP0568880A1 Preamplifier for optical communication having a gain control circuit
11/09/1993US5261119 Signal level measuring system for a radio receiver
11/09/1993US5260792 AGC circuit with 60 hertz hum compensation
11/03/1993EP0567546A1 Amplitude control of a burst signal in a receiver
11/03/1993EP0348396B1 Radio receiver speech amplifier circuit
11/02/1993US5259001 ADPCM decoder with an integral digital receive gain and method therefor
11/02/1993CA2020870C Radio telecommunication apparatus
10/1993
10/30/1993CA2067538A1 Automatic volume control system
10/27/1993EP0567343A2 Automatic adjustment circuit for analog control unit
10/26/1993US5257415 Automatic transmission level control device
10/26/1993US5256987 Power amplifier device having a plurality of power amplifier units connected in parallel
10/26/1993US5256983 Wide band amplifier
10/26/1993CA1323659C Agc delay on an integrated circuit
10/20/1993EP0566406A1 Power detection technique for automatic amplifier power control
10/19/1993US5255323 Digital signal processing device and audio apparatus using the same
10/19/1993US5255094 Muting circuit for eliminating transient signals generated due to power supply turn-on and turn-off
10/14/1993WO1993020622A1 Squelch detector
10/13/1993EP0565256A1 Multipath noise minimiser for radio receiver
10/13/1993EP0565255A1 Multipath detector using phase comparison of stereo pilot signal
10/12/1993US5252929 RF power amplifier
10/06/1993EP0563421A1 Circuit arrangement with a switch amplifier
10/06/1993EP0563125A1 Dynamically biased amplifier
10/06/1993CN1022364C Dynamic offset amplifier
10/05/1993US5251331 High efficiency dual mode power amplifier apparatus
10/05/1993US5251216 Receiver gain control for radio telephone system
10/01/1993CA2092882A1 Circuit arrangement having a switching amplifier
09/1993
09/30/1993WO1993019539A1 Optical receiver
09/30/1993WO1993019525A1 Visual dynamics management for audio instrument
09/30/1993WO1993019466A2 Computer disk drive integrated data path circuit optimized for handling both data and servo signals
09/30/1993CA2128894A1 Optical receiver
09/29/1993EP0562963A1 AGC device in a receiver for data signals
09/29/1993EP0562962A1 Device for processing signals transmitted as data packets
09/29/1993EP0562961A1 Method of automatic gain control of a superheterodyne receiver and receiver using such a method
09/29/1993EP0562414A1 Sound intermediate frequency amplifier for a broadcast receiver
09/28/1993US5249233 Multipath noise minimizer for radio receiver
09/28/1993US5248871 Automatic gain control circuit
09/28/1993CA2092789A1 Processing device for packet transmitted signals
09/28/1993CA2092788A1 Improved automatic gain control method for a radio signal superheterodyne receiver and receiver using said method
09/22/1993EP0561754A1 An arrangement for eliminating offset errors in a power control circuit of a pulsed transmitter final amplifier
09/22/1993CN1076567A High efficiency dual mode power amplifier apparatus
09/21/1993US5247542 QPSK power amplifier distortion correction system
09/16/1993DE4207747A1 Harmonic distortion for electric guitars - using phase splitting and separate distortion of each half-wave before summation and output
09/15/1993EP0560548A1 Power control circuit
09/15/1993EP0560056A1 Gain control circuit and gradation correcting apparatus
09/15/1993EP0559840A1 High dynamic range closed loop automatic gain control circuit
09/14/1993WO1993018583A1 High efficiency dual mode power amplifier apparatus
09/14/1993US5245666 Personal subliminal messaging system
09/14/1993US5245436 Method and apparatus for detecting fades in digital video sequences