Patents
Sitemap › H03 - Basic electronic circuitry › H03G - Control of amplification › H03G 3 - Gain control in amplifiers or frequency changers
Patents for H03G 3 - Gain control in amplifiers or frequency changers (20,162)
10/2005
10/20/2005US20050233714 Variable gain amplifier for use in communications
10/20/2005US20050232445 Use of voice-to-remaining audio (VRA) in consumer applications
10/20/2005US20050232444 Sound level adjusting apparatus
10/20/2005US20050232439 Set volume control device for on-vehicle audio system
10/20/2005US20050232438 Event-driven content playback system for vehicles
10/20/2005US20050231285 Amplitude detecting method, AGC circuit gain controlling method, amplitude detecting apparatus and AGC amplifier circuit
10/19/2005EP1587341A1 Audio output level setting method and device
10/19/2005CN1685608A Device and method for determining the level of an input signal intended to be applied to a receiving system
10/19/2005CN1685397A Voice controlled system and method
10/19/2005CN1684376A Radio receiver, radio receiving method and recording medium
10/19/2005CN1684375A Radio receiver, radio receiving method and recording medium
10/19/2005CN1684374A Radio receiver, radio receiving method and recording medium
10/19/2005CN1684363A Amplitude detecting method, AGC circuit gain controlling method, amplitude detecting apparatus and AGC amplifier circuit
10/19/2005CN1224204C Radio communication device and transmitted power control method
10/18/2005US6957052 Transmission system, receiver, circuit, and method for removing interference components in a signal
10/18/2005US6956432 Transmission output correcting apparatus
10/18/2005US6956430 Distortion detector
10/13/2005WO2005096005A1 Measuring circuit for the output of a power amplifier and a power amplifier comprising the measuring circuit
10/13/2005WO2005094743A1 Method for preventing hearing impairment and ear protection device
10/13/2005US20050227656 Signal amplifier system for a broadcast receiver
10/13/2005US20050227646 Detecting and maintaining linearity in a power amplifier system through comparing peak and RMS power levels
10/13/2005US20050227644 Constant gain nonlinear envelope tracking high efficiency linear amplifier
10/13/2005US20050227643 Apparatus and method for detecting radio frequency transmission power levels
10/13/2005US20050227640 Method and apparatus for dynamically adjusting a transmitter's impedance and implementing a hybrid power amplifier therein which selectively connects linear and switch-mode power amplifiers in series
10/13/2005US20050227627 Programmable radio transceiver
10/13/2005US20050227622 Continuous dual tone controlled squelch system
10/13/2005US20050226442 Method and apparatus for achieving temporal volume control
10/13/2005US20050226436 Noise-protecting arrangement for ear protector
10/13/2005US20050226429 Multi-channel relative amplitude and phase display with logging
10/13/2005US20050226428 Method and system for ensuring audio safety
10/13/2005US20050226347 Method for controlling the power of the output signal from an amplifier system and the associated system
10/13/2005US20050226119 Reproduction apparatus and information recording medium testing apparatus
10/13/2005US20050225394 Automatic current reduction biasing technique for RF amplifier
10/13/2005US20050225393 Variable gain amplifying circuit
10/13/2005US20050225390 Amplifier having switchable negative feedback
10/13/2005US20050225386 Method and circuit arrangement for amplitude regulation of an oscillator signal
10/13/2005DE19536233B4 Verfahren zum Regeln des Pegels des Ausgangssignals eines bereichsselektiven Hochfrequenz-Verstärkers für Mehrkanalsysteme und bereichsselektiver Hcohfrequenz-Verstärker mit Pegelregelschaltung A method for controlling the level of the output signal of a range-selective RF amplifier for multi-channel systems and selective area Hcohfrequenz amplifier with level control circuit
10/13/2005DE102004013217A1 Programmable difference amplifier has first load, first transistor with first controllable extent and first gate connection
10/12/2005EP1585217A1 Process of controlling the power of the output signal of an amplifier system, and associated system
10/12/2005EP1585216A2 Continuous dual tone controlled squelch system
10/12/2005EP1585129A2 Reproduction apparatus and information recording medium testing apparatus
10/12/2005EP1584169A1 Agc circuit arrangement for a tuner
10/12/2005CN1682440A Preserving linearity of a RF power amplifier
10/12/2005CN1682439A 可变增益放大器 A variable gain amplifier
10/12/2005CN1681205A Agc电路 Agc circuit
10/12/2005CN1681204A Sound signal processing apparatus and sound signal processing method
10/12/2005CN1681199A Method and device for amplifying a reception signal
10/12/2005CN1681198A Dynamic bias for RF power amplifiers
10/12/2005CN1223160C Receiver circuit having automatic gain controlled RF receiver
10/12/2005CN1223114C Radio communication apparatus and method for transmitting power control thereof
10/12/2005CN1223093C Signal multiplexer and multiplexing method
10/12/2005CN1223081C Apparatus and method for transmitter
10/11/2005USRE38822 Circuit, audio system and method for processing signals, and a harmonics generator
10/11/2005US6954624 Transmitter and wireless communication device having a low power bypass branch
10/11/2005US6954620 RF power control system including watchdog circuit
10/11/2005US6954537 Power-off noise suppression circuit and associated methods for an audio amplifier device
10/11/2005US6954104 Method and system for monitoring a deliverable radio frequency power of an amplifier operable on a monolithic microwave integrated circuit
10/11/2005US6954099 Level shifter without dutycycle distortion
10/06/2005WO2005094124A1 Fader device
10/06/2005WO2005094119A1 Sound quality regulator
10/06/2005WO2005091980A2 Coaxial communication active tap device and distribution system
10/06/2005US20050221868 Method and apparatus for volume reduction in a vehicle
10/06/2005US20050221789 Bandpass filter with integrated variable gain function using improved resistor array
10/06/2005US20050221788 Bandpass filter with integrated variable gain function
10/06/2005US20050221783 Programmable if frequency filter for enabling a compromise between DC offset rejection and image rejection
10/06/2005US20050221779 AGC circuit
10/06/2005US20050221778 Automatic gain control device, automatic gain control method, control program for automatic gain control device, radio communication terminal having automatic control device, radio communication system, and radio communication method
10/06/2005US20050220313 Howling frequency component emphasis method and apparatus
10/06/2005US20050220217 Transmitter and wireless communication apparatus using same
10/06/2005US20050218989 High-frequency power amplifier circuit and electronic part for communication
10/06/2005US20050218974 Bandpass amplifier, method, and system
10/05/2005EP1583247A1 Programmable IF frequency filter for enabling a compromise between DC offset rejection and image rejection
10/05/2005EP1583232A2 Automatic gain control device and method
10/05/2005EP1581994A2 Power amplifier circuit and method using bandlimited signal component estimates
10/05/2005CN1678129A Howling frequency component emphasis method and apparatus
10/05/2005CN1677850A Automatic gain control device, automatic gain control method, radio communication terminal, system and method
10/05/2005CN1677849A Sound-volume regulating device and method
10/05/2005CN1677843A Programmable if frequency filter for enabling a compromise between DC offset rejection and phase frequency interference rejection
10/04/2005US6952135 Method and apparatus for controlling an amplifier
10/04/2005US6952134 Protection circuit for extending headroom with off-chip inductors
10/04/2005US6952132 Method and apparatus for automatic gain control
09/2005
09/29/2005WO2005091671A1 Volume control method, volume controller, volume control program, electronic apparatus
09/29/2005WO2005091624A1 Automatic gain control circuit
09/29/2005WO2005091512A1 Signal processing circuit
09/29/2005WO2005091510A1 Method for noise reduction in an audio radio receiver and receiver using said method
09/29/2005WO2005091498A1 Signal switch circuit
09/29/2005US20050216937 Systems and methods for television antenna operation
09/29/2005US20050215212 Receiver
09/29/2005US20050215211 Method and system for improving dynamic range for communication systems using upstream analog information
09/29/2005US20050215202 System and method for antenna diversity using equal power joint maximal ratio combining
09/29/2005US20050213782 Voice amplifier for mask
09/29/2005US20050213776 Automobile audio system and signal processing method therefor
09/29/2005US20050213772 Method and apparatus for reverberation processing
09/29/2005US20050213770 Apparatus for generating stereo sound and method for the same
09/29/2005US20050213749 Automatic adjustment system, automatic adjustment device, and automatic adjustment method
09/29/2005US20050212604 Programmable radio transceiver
09/29/2005US20050212601 Power amplifiers
09/29/2005US20050212600 Circuit and method for controlling gain in an amplifier
09/29/2005US20050212592 Switching amplifier
09/28/2005EP1580883A1 Set volume control device for on-vehicle audio system
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