| Patents for H03G 3 - Gain control in amplifiers or frequency changers (20,162) |
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| 06/24/2009 | CN100505529C Automatic gain controller and a transmitting apparatus and method for use with a mobile communication terminal |
| 06/24/2009 | CN100505528C Method and circuit for preserving linearity of a RF power amplifier |
| 06/23/2009 | US7552050 Speech recognition system and method utilizing adaptive cancellation for talk-back voice |
| 06/23/2009 | US7551908 High-frequency signal level detection apparatus and high-frequency signal receiver apparatus using the same |
| 06/23/2009 | US7551745 Volume and compression control in movie theaters |
| 06/23/2009 | US7551744 Display showing waveform of an audio signal and corresponding dynamic volume adjustments |
| 06/23/2009 | US7551742 Acoustic signal-processing apparatus and method |
| 06/23/2009 | US7551032 Method and apparatus for controlling the output power of a power amplifier |
| 06/23/2009 | US7551031 Amplifier |
| 06/23/2009 | US7551027 RF power amplifier mirror circuit for sensing current |
| 06/18/2009 | WO2009075780A1 Satellite receiver software algorithm for setting an input attenuator |
| 06/18/2009 | US20090156143 Power control loop, transmitter with the power control loop and method for controlling output power of a transmitter device |
| 06/18/2009 | US20090154716 System and method for sound system simulation |
| 06/18/2009 | US20090153245 Variable-gain wide-dynamic-range amplifier |
| 06/17/2009 | EP2071720A1 Method and circuit for controlling baseband gain |
| 06/17/2009 | EP2070278A2 Output power correction module for amplifiers in transmitters |
| 06/17/2009 | EP1066688B1 A decoder having a gain controller in a mobile communication system |
| 06/17/2009 | CN101461136A Method and system for automatic gain control during signal acquisition |
| 06/17/2009 | CN101461135A Method and system for automatic gain control with intelligent selection of signal samples |
| 06/17/2009 | CN101461134A Wide dynamic range amplifier gain control |
| 06/17/2009 | CN101461133A Automatic gain control |
| 06/17/2009 | CN101459416A Apparatus and method for terminal audio gain control |
| 06/17/2009 | CN101459415A Volume automatic control method and circuit in digital audio field |
| 06/17/2009 | CN101459414A Video and audio playing device and volume control method |
| 06/17/2009 | CN100502236C Sound volume controlling system and method |
| 06/16/2009 | US7549157 Automatic gain-setting in relaying device |
| 06/16/2009 | US7549123 Mixing input channel signals to generate output channel signals |
| 06/16/2009 | US7548732 Power amplifier arrangement having two or more antenna coupling respective amplifiers to a supply potential |
| 06/16/2009 | US7548116 High-frequency circuit of reduced circuit scale |
| 06/11/2009 | WO2009070937A1 Gain control circuit |
| 06/11/2009 | US20090149215 Information processing apparatus |
| 06/11/2009 | US20090147971 Phone and volume control unit |
| 06/11/2009 | US20090147970 Mobile terminal and sound input/output control method for mobile terminal |
| 06/11/2009 | US20090146799 Adaptive audio content generation system |
| 06/10/2009 | EP2067255A1 Method of control slope regulation and control slope regulation apparatus |
| 06/10/2009 | EP2067254A2 Loudness controller with remote and local control |
| 06/10/2009 | CN101454973A Automatic gain controller |
| 06/10/2009 | CN101453198A Popping inhibition method for exchange audio power amplifier |
| 06/10/2009 | CN101453197A Gain regulating circuit |
| 06/10/2009 | CN100499687C Portable terminal having multi-purpose earphone socket |
| 06/10/2009 | CN100499618C Tuned circuit with variable amplitude function and integrated circuit for radio communication device |
| 06/10/2009 | CN100499360C Integrated transfer resistance amplifier with auto-gain control |
| 06/09/2009 | US7546098 Control system with selective open-loop operation |
| 06/09/2009 | US7545778 Apparatus for antenna diversity using joint maximal ratio combining |
| 06/09/2009 | US7545220 Method for shaping signal pulses |
| 06/09/2009 | US7545217 System and method for improving power efficiency in GSM power amplifiers |
| 06/09/2009 | CA2495010C Method and apparatus for optimizing transmitter power efficiency |
| 06/04/2009 | WO2009070797A1 System and method for digital signal processing |
| 06/04/2009 | WO2009042651A3 Method and system for adjusting audio of a wireless communication device |
| 06/04/2009 | US20090141905 Navigable audio-based virtual environment |
| 06/04/2009 | US20090141170 Video/audio output device and external speaker control apparatus |
| 06/04/2009 | US20090140813 Received signal gain control method and radio frequency signal receiving apparatus |
| 06/04/2009 | US20090140805 Voltage Regulator For Biasing Current-To-Voltage Amplifiers |
| 06/04/2009 | DE102007057282A1 Integrated switching arrangement for variable gain amplifier in e.g. medical technical device, has control device producing control signal by reading out storage device, and interface programming and/or reprogramming storage device |
| 06/03/2009 | EP2066025A2 Audio signal processing apparatus, audio signal processing method, and communication terminal |
| 06/03/2009 | EP2064809A2 System and method for power amplifier output power control |
| 06/03/2009 | CN101447771A Method and system for automatically controlling gains |
| 06/03/2009 | CN101447770A Temperature compensation circuit and method of radio-frequency power amplifiers |
| 06/03/2009 | CN100495933C Apparatus, and an associated method for increasing receiver sensitivity of a direct conversion receiver |
| 06/03/2009 | CN100495908C Distance sensing system and method of mobile communication device |
| 06/02/2009 | US7542748 Signal processing circuit comprising an attenuating unit, a detecting unit, and an attenuation rate setting unit |
| 06/02/2009 | US7542577 Input sound processor |
| 06/02/2009 | US7542529 Wireless receiving device suppressing occurrence of reception error |
| 06/02/2009 | US7541864 Power amplifier and pulse-width modulated amplifier |
| 05/28/2009 | WO2009066690A1 Optical burst signal receiver |
| 05/28/2009 | US20090137220 Variable gain amplifier and receiver including the same |
| 05/28/2009 | US20090136061 Audio level compressor |
| 05/28/2009 | US20090136060 Audio output control device and audio output control method |
| 05/28/2009 | US20090136051 System and method for modulating audio effects of speakers in a sound system |
| 05/28/2009 | US20090136049 Device and method for acoustic communication and/or perception in a motor vehicle |
| 05/28/2009 | US20090135971 Narrowband gain control of receiver with digital post filtering |
| 05/28/2009 | DE202009001466U1 Intuitiv gesteuerte Gehörschutzschaltung für Kopfhörer Intuitively controlled hearing protection switch for headphones |
| 05/27/2009 | EP2062351A1 System and method for controlling gain of related signals |
| 05/27/2009 | EP1327308A4 System for closed loop power control using a linear or a non-linear power amplifier |
| 05/27/2009 | CN201247811Y Printing antenna system of vehicle rear window glass |
| 05/27/2009 | CN201247810Y Printing antenna system of vehicle rear window glass |
| 05/27/2009 | CN101442325A Amplifier with band-pass filtering function |
| 05/27/2009 | CN100492895C Feedback control system and method |
| 05/26/2009 | US7539613 Device for recovering missing frequency components |
| 05/26/2009 | US7539468 Communication terminal device and amplification circuit |
| 05/26/2009 | US7539320 Hearing aid with automatic excessive output sound control |
| 05/26/2009 | US7539317 Drive apparatus for volume control devices |
| 05/26/2009 | US7538632 Method and apparatus for controlling adaptive circuits |
| 05/26/2009 | US7538612 Control circuit for diode based RF circuits |
| 05/26/2009 | US7538610 Method and system for enhancement of power amplifier efficiency through controlled variation of gain in a power Amplifier Driver |
| 05/21/2009 | US20090132242 Portable audio recording and playback system |
| 05/21/2009 | US20090129363 Automatic Volume Restoration in a Distributed Communication System |
| 05/21/2009 | US20090128235 Power save mode for audio interface drive amplifier |
| 05/20/2009 | CN201243374Y Control device for regulating earphone sound volume |
| 05/20/2009 | CN101437573A Automatic external defibrillator with enhanced clarity of audible prompts |
| 05/20/2009 | CN101435782A Method for increasing image data dynamic range and image acquiring system |
| 05/20/2009 | CN100490314C Audio signal processing for speech communication |
| 05/20/2009 | CN100490313C Automatic gain control circuit and its automatic attenuating circuit and variable attenuater |
| 05/19/2009 | US7536159 Automatic gain control using signal and interference power to obtain extended blocking performance |
| 05/19/2009 | US7536114 Method and system for converting an optical received pulse train into an electrical output pulse train |
| 05/19/2009 | US7535297 Architecture and method for improving efficiency of a class-A power amplifier by dynamically scaling biasing current thereof as well as synchronously compensating gain thereof in order to maintain overall constant gain of the class-A power amplifier at all biasing configurations thereof |
| 05/19/2009 | US7535291 AM demodulator |
| 05/14/2009 | WO2009061319A1 Signal processing for light beam sensing |
| 05/14/2009 | WO2009060652A1 Power amplifier and radio wave transmitter having the same |
| 05/14/2009 | WO2009060557A1 Signal amplifying device and acoustic system |