Patents
Patents for H03G 3 - Gain control in amplifiers or frequency changers (20,162)
04/2005
04/19/2005US6882185 Exponential current generator and method
04/14/2005WO2005034342A1 Method for regulating the power of a power amplifier in a mobile communication terminal
04/14/2005WO2005033880A2 Method and apparatus for performing multimedia operations
04/14/2005WO2005033871A2 Method for creating a collection of multimedia interactive graphic elements using arrow logic
04/14/2005WO2005033870A2 Method for creating and using text objects as control devices
04/14/2005WO2004077847A3 Method and apparatus for selective disregard of co-channel transmissions on a medium
04/14/2005US20050079842 Timing based LNA gain adjustment in an RF receiver to compensate for intermodulation interference
04/14/2005US20050079835 Transmitting method and transmitter apparatus
04/14/2005US20050078966 Identification level control method and optical receiver
04/14/2005US20050078841 Method and apparatus for resetting a buffer amplifier
04/14/2005US20050078838 Hearing ajustment appliance for electronic audio equipment
04/14/2005US20050078835 Vibroacoustic emulator
04/14/2005US20050078775 Mitigating the impact of phase steps
04/14/2005US20050078123 Method for creating and using text objects as control devices
04/14/2005US20050077963 Modulation dependent biasing for efficient and high-linearity power amplifiers
04/14/2005US20050077959 Gain control circuit
04/14/2005US20050077958 Amplifier with capacitor selection
04/14/2005DE10341340A1 Verfahren zur Leistungsregelung für ein mobiles Kommunikationsendgerät A method for power control for a mobile communication terminal
04/14/2005DE10059470B4 Verfahren zur Einstellung eines Schallpegels in einem Mobiltelefon Method for adjusting sound levels in a mobile phone
04/13/2005EP1523094A1 Automatically adjusting low noise amplifier
04/13/2005EP1522151A2 System and method for a direct conversion multi-carrier processor
04/13/2005EP1522142A2 Amplifying circuit with adjustable amplification and transmitter system comprising such an amplifying circuit
04/13/2005EP1041727B1 Spread-spectrum apparatus and method
04/13/2005CN1606829A Automatic gain control for a tuner
04/13/2005CN1197239C Amplifier circuit and method of control thereof
04/13/2005CN1197238C Automatic gain controller and method and communication equipment with said control function
04/12/2005US6879210 Variable gain amplifier
04/12/2005US6879204 Exponential conversion circuit
04/12/2005CA2373516C Method and apparatus for obtaining optimal performance in a receiver
04/07/2005WO2005011111A3 Audio conditioning apparatus, method and computer program product
04/07/2005WO2005006574A3 Method, apparatus and system for use in determining pilot-to-data power ratio in wireless communication
04/07/2005US20050075088 Wireless communication semiconductor integrated circuit device and wireless communication system
04/07/2005US20050075085 Transmit power control in a wireless communication device
04/07/2005US20050073450 Temperature compensation device for automatic gain control loop
04/07/2005US20050073359 Apparatus for automatically controlling a gain of a power amplifier and associated methods
04/07/2005US20050073357 Automatically adjusting low noise amplifier
04/07/2005US20050072625 Acoustic diffusers for acoustic field uniformity
04/06/2005EP1210765A4 Filter banked gain control of audio in a noisy environment
04/06/2005EP0960474B1 A communication system, device and method
04/06/2005CN1604604A A method and apparatus for automatic regulation of mobile phone volume
04/06/2005CN1604209A Current to voltage conversion circuit for photo detector integrated circuit employing gain switching circuit
04/06/2005CN1196303C Gain controller for orthogonal transceiver
04/06/2005CN1196269C Communication equipment, radio communication system and automatic gain control method of radio communication equipment
04/06/2005CN1196256C Muting circuit having controllable impedance means for soft muting
04/05/2005US6876748 Digital signal processing for symmetrical stereophonic imaging in automobiles
04/05/2005US6876257 Gain control circuit, and a radio communication apparatus using the same
04/05/2005US6876253 Amplifier for alternating signals superimposed on a continuous signal and method for amplifying such signals
04/05/2005US6876243 High linearity large bandwidth, switch insensitive, programmable gain attenuator
03/2005
03/31/2005WO2005029694A1 An adaptive wideband digital amplifier for linearly modulated signal amplification and transmission
03/31/2005WO2004082321A3 Multi-channel digital feedback reducer system
03/31/2005US20050071764 Method for creating a collection of multimedia interactive graphic elements using arrow logic
03/31/2005US20050071747 Method and apparatus for performing multimedia operations
03/31/2005US20050069154 Electronic apparatus that allows speaker volume control based on surrounding sound volume and method of speaker volume control
03/31/2005US20050069142 Integrated circuit and electronic apparatus provided with the same with software IP implementation
03/31/2005US20050068087 Exponential conversion circuit
03/31/2005US20050068060 Transmission signal correction circuit
03/31/2005DE19603722B4 HF-Eingangsstufe RF input stage
03/31/2005DE10337444A1 Device for simultaneous transmission of two mobile RF signals e.g. for mobile RF equipment of third generation, has device for matching power output stage at input and/or output over wide frequency range
03/30/2005EP1519481A1 Agc circuit
03/30/2005EP1519264A2 Electronic apparatus that allows speaker volume control based on surrounding sound volume and method of speaker volume control
03/30/2005EP1518335A1 Method for tuning an envelope tracking amplification system
03/30/2005CN1601929A Receiving circuit for free-space optical communication
03/30/2005CN1601895A Control method for the AGC unit of a radio receiver
03/30/2005CN1601513A Integrated circuit and electronic apparatus provided with the same
03/30/2005CN1601457A Electronic apparatus that allows speaker volume control based on surrounding sound volume and method of speaker volume control
03/29/2005US6873833 Method and apparatus for estimating and controlling initial time slot gain in a wireless communication system
03/29/2005US6873832 Timing based LNA gain adjustment in an RF receiver to compensate for intermodulation interference
03/24/2005WO2005027343A1 Staggered agc with digitally controlled vga
03/24/2005WO2005027342A1 Power amplifier with improved linearity and efficiency
03/24/2005WO2005025767A1 Acoustic diffusers for acoustic field uniformity
03/24/2005WO2004095765A3 Method and apparatus for estimating and controlling initial time slot gain in a wireless communication system
03/24/2005US20050064841 Receiving circuit
03/24/2005US20050064834 Control method for the AGC unit of a radio receiver
03/24/2005US20050064828 Method of ramping up output level of power amplifier of radio communication system, communication semiconductor integrated circuit, and radio communication system
03/24/2005US20050063556 Audio device
03/24/2005US20050063554 System and method for audio system configuration
03/24/2005US20050063552 Ambient noise sound level compensation
03/24/2005US20050063533 Microprocessor-controlled full-duplex speakerphone using automatic gain control
03/24/2005US20050063270 Amplifier circuit for optical desk drive
03/24/2005US20050062529 Adaptive wideband digital amplifier for linearly modulated signal amplification and transmission
03/24/2005US20050062527 Digital amplifier
03/24/2005US20050061954 Receiving circuit for free-space optical communication
03/24/2005DE10317805B4 Schaltungsanordnung zur Offsetkompensation in breitbandigen Hochfrequenzdetektoren und -verstärkern Circuit arrangement for offset compensation in broadband high-frequency detectors and amplifiers
03/23/2005EP1517452A2 High-quality power ramping in a communications transmitter
03/23/2005EP1517440A2 Variable gain control circuit and receiver apparatus using the circuit
03/23/2005EP1517438A1 Digital amplifier
03/23/2005CN2688006Y Mixing console
03/23/2005CN1599241A 接收电路 Receiving circuit
03/22/2005US6871053 Wireless communication apparatus
03/22/2005US6871050 Circuit configuration for controlling the transmitting power of a battery-operated transceiver
03/22/2005US6871049 Improving the efficiency of power amplifiers in devices using transmit beamforming
03/22/2005US6870425 System and method of amplifier gain control by variable bias and degeneration
03/22/2005CA2071557C Use of iteration to improve the correction of agc dependent channel-to-channel gain imbalance
03/17/2005WO2005025056A1 Automatic gain control amplification device, reception device, and radio communication device
03/17/2005WO2005025053A2 Dual mode multi-slot egprs transmitter
03/17/2005WO2004112425B1 Audio amplifier with local interface system
03/17/2005US20050059424 System and method for power control calibration and a wireless communication device
03/17/2005US20050059374 AM receiver circuit performing sound quality compensation of AM detection output signal
03/17/2005US20050059369 Method and apparatus for maintaining audio level preferences in a communication device
03/17/2005US20050058228 Staggered AGC with digitally controlled VGA