| Patents for H03G 3 - Gain control in amplifiers or frequency changers (20,162) |
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| 01/18/2011 | US7873424 System and method for optimizing digital audio playback |
| 01/18/2011 | US7873334 Power control circuitry for a mobile terminal application |
| 01/18/2011 | US7872527 Power supply control system and method with variable post-regulation |
| 01/13/2011 | WO2011005843A2 Receiver with automatic gain control |
| 01/13/2011 | WO2011005777A1 Radio frequency front end circuit with antenna diversity for multipath mitigation |
| 01/13/2011 | WO2011003691A1 The double integral method of powering up or down a speaker |
| 01/13/2011 | US20110010167 Method for generating background noise and noise processing apparatus |
| 01/13/2011 | US20110009058 Method and apparatus for managing sound volume of wireless connection device in mobile communication terminal |
| 01/13/2011 | US20110007910 Volume control device and method for using the same |
| 01/13/2011 | US20110006846 High-frequency amplifier |
| 01/12/2011 | EP2273674A2 Direct conversion receiver architecture |
| 01/12/2011 | EP2273673A1 Audio signal processing device and audio signal processing method |
| 01/12/2011 | CN201708910U Intelligent induction sound box |
| 01/12/2011 | CN201708909U Super-directivity microphone pickup processing device |
| 01/12/2011 | CN201708769U Power amplifier output volume controller |
| 01/12/2011 | CN201705342U Ground signal receiving instrument for electromagnetic wave measurement while drilling |
| 01/12/2011 | CN1939089B Sound volume control circuit, semiconductor integrated circuit, and sound source device |
| 01/12/2011 | CN101944002A Gain adjustable multifunctional data acquisition card |
| 01/12/2011 | CN101133552B Method and apparatus for multichannel signal limiting |
| 01/11/2011 | US7869776 Method and apparatus for regulating the transmitted power in multi-rate wireless communication systems |
| 01/11/2011 | CA2524162C Periodic signal enhancement system |
| 01/06/2011 | WO2011001010A1 Apparatus, method and computer program for controlling an acoustic signal |
| 01/06/2011 | WO2011000882A1 Generator of a modulated radiofrequency signal, method for calibrating the generator, and magnetic resonance imaging system |
| 01/06/2011 | WO2010099237A3 Speaker distortion reduction system and method |
| 01/06/2011 | US20110004467 Vocal and instrumental audio effects |
| 01/06/2011 | US20110002481 Audio signal amplitude adjusting device and method |
| 01/06/2011 | US20110002480 System, method, and device for intelligence gathering and position tracking |
| 01/06/2011 | US20110001564 Variable gain amplifier |
| 01/06/2011 | US20110001563 PIN-DIODE Linearized Automatic Gain Control Circuits |
| 01/06/2011 | CA2766196A1 Apparatus, method and computer program for controlling an acoustic signal |
| 01/05/2011 | EP2270980A1 Receiver with analog and digital gain control, and respective method |
| 01/05/2011 | EP2270976A1 Optimising operating temperature in a power amplifier |
| 01/05/2011 | EP2269304A1 Device power detector |
| 01/05/2011 | EP2269303A1 Hybrid switched mode/linear mode power amplifier control |
| 01/05/2011 | EP2064809B1 System and method for power amplifier output power control |
| 01/05/2011 | CN201699660U Automatic compensation circuit for gain of radio-frequency power-amplification module |
| 01/05/2011 | CN101938328A Signal processing apparatus, information processing apparatus, coding method, and data transmission method |
| 01/05/2011 | CN101938258A Method and device for controlling radio frequency power amplifier to transmit signal |
| 01/05/2011 | CN101938257A Audio processing chip and audio signal processing method thereof |
| 01/05/2011 | CN101170310B A digital/analog mixed automatic gain control device |
| 01/04/2011 | US7865167 Digital video broadcast-terrestrial (DVB-T) receiver interoperable with a GSM transmitter in a non-interfering manner |
| 01/04/2011 | US7865087 Bandpass filter circuit, band-elimination filter circuit, infrared signal processing circuit |
| 01/04/2011 | US7864652 Gain control circuit and optical recording and reproducing device using thereof |
| 01/04/2011 | US7863984 High efficiency microwave amplifier |
| 01/04/2011 | US7863983 Smart linearized power amplifier and related systems and methods |
| 12/30/2010 | US20100329482 Audio digital to analog converter and audio processing apparatus including the same |
| 12/30/2010 | US20100329471 Ambient noise compensation system |
| 12/30/2010 | US20100327977 Gain control linearity in an rf driver amplifier transmitter |
| 12/29/2010 | EP2267906A2 Transmission output circuit and mobile communication terminal |
| 12/29/2010 | EP2267892A1 Receiver with analog and digital gain control, and respective method |
| 12/29/2010 | EP2267891A2 Direct conversion receiver architecture |
| 12/29/2010 | EP2267890A2 Direct conversion receiver architecture |
| 12/29/2010 | EP2267889A2 Direct conversion receiver architecture |
| 12/29/2010 | EP2267888A2 Direct conversion receiver architecture |
| 12/29/2010 | EP2267887A2 Direct conversion receiver architecture |
| 12/29/2010 | EP2011234B1 Audio gain control using specific-loudness-based auditory event detection |
| 12/29/2010 | CN101933229A Improvements in or relating to radio receivers |
| 12/28/2010 | US7860590 Artificial ambiance processing system |
| 12/28/2010 | US7860256 Artificial-reverberation generating device |
| 12/28/2010 | US7859336 Power supply providing ultrafast modulation of output voltage |
| 12/28/2010 | US7859334 Hybrid power control for a power amplifier |
| 12/23/2010 | WO2010148369A1 Detection circuit for overdrive conditions in a wireless device |
| 12/23/2010 | WO2010148087A2 Methods and apparatus for initial acquisition in a communication system |
| 12/23/2010 | US20100322436 Array microphone system including omni-directional microphones to receive sound in cone-shaped beam |
| 12/23/2010 | US20100322431 Method for reproducing natural or modified spatial impression in multichannel listening |
| 12/23/2010 | US20100321321 Portable electronic device and method of controlling same |
| 12/23/2010 | US20100321114 Amplifier circuit and receiver using the same |
| 12/23/2010 | US20100321113 Low noise amplifier |
| 12/23/2010 | US20100321108 Method and apparatus for controlling high power amplifier in communication system |
| 12/23/2010 | US20100320819 Chair and System for Transmitting Sound and Vibration |
| 12/22/2010 | EP2264911A2 Spread-spectrum system and method |
| 12/22/2010 | CN201682458U Automatic gain control magnifier and low noise hearing aid system |
| 12/22/2010 | CN1839662B Acoustic aid |
| 12/22/2010 | CN1643788B Gain control for communications device |
| 12/22/2010 | CN101924527A Broadband programmable gain amplifier with precise gain step size |
| 12/22/2010 | CN101924526A Audio signal controller |
| 12/22/2010 | CN101924523A Power amplifier integrated circuit with temperature and output power compensation mechanism |
| 12/21/2010 | US7856353 Method for processing speech signal data with reverberation filtering |
| 12/21/2010 | US7856218 Direct conversion receiver |
| 12/21/2010 | US7856108 Method for preventing an output device from being damaged |
| 12/21/2010 | US7855601 Semiconductor device |
| 12/21/2010 | US7855599 Power amplifier |
| 12/16/2010 | WO2010109013A4 Apparatus and method of reducing noise for frequency modulated signals |
| 12/16/2010 | US20100315166 Variable Gain Circuit |
| 12/16/2010 | US20100315164 Constant-Bandwidth Variable Gain Amplifier |
| 12/15/2010 | EP2262280A2 Method and system for acoustic shock protection |
| 12/15/2010 | EP2262112A2 Switch apparatus. switchable power amplification apparatus, and mobile communication terminal apparatus |
| 12/15/2010 | EP2262108A1 Adjusting the perceived loudness and/or the perceived spectral balance of an audio signal |
| 12/15/2010 | EP2262105A2 Voltage standing wave ratio detector for power amplifier |
| 12/15/2010 | CN201674646U Automobile whistling device |
| 12/15/2010 | CN201674590U Television with automatic sound-volume adjusting function |
| 12/15/2010 | CN201674469U Audio-frequency power amplifier circuit with automatic gain control circuit |
| 12/15/2010 | CN101917656A Automatic volume adjustment device and method |
| 12/15/2010 | CN101917172A System for automatically detecting signal sources |
| 12/15/2010 | CN101917171A Broadband programmable gain amplifier based on operational amplifier |
| 12/15/2010 | CN101917170A Direct conversion receiver architecture |
| 12/15/2010 | CN101102098B Automatic gain control circuit |
| 12/14/2010 | US7853023 Method and apparatus to reproduce expanded sound using mono speaker |
| 12/14/2010 | US7852968 Method and apparatus for optimizing transmitter power efficiency |
| 12/14/2010 | US7852151 Variable gain amplifier |