| Patents for H03G 3 - Gain control in amplifiers or frequency changers (20,162) |
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| 09/02/2009 | CN101521934A Method for automatically calculating RAMP parameters of GSM power amplifier and device thereof |
| 09/02/2009 | CN101521491A Radio-frequency power regulation method and radio-frequency power amplifier |
| 09/02/2009 | CN101521490A Power amplifying circuit for providing bias voltage signal to input end and method thereof |
| 09/02/2009 | CN101521488A Voice drive circuit for reducing sonic boom when switching on and shutting down |
| 09/02/2009 | CN100536319C Drive circuit able to gradually increase and reduce voltage |
| 09/02/2009 | CN100536122C Hybrid integrated circuit device, and method for fabricating the same, and electronic device |
| 09/01/2009 | US7583809 Sound signal processing device and sound signal processing method |
| 09/01/2009 | US7583807 Set volume control device for on-vehicle audio system |
| 09/01/2009 | US7583805 Late reverberation-based synthesis of auditory scenes |
| 09/01/2009 | US7583746 Wireless transmitting and receiving device and method |
| 09/01/2009 | US7583166 Inductor Q factor enhancement apparatus has bias circuit that is coupled to negative resistance generator for providing bias signal |
| 09/01/2009 | US7583149 Power supply apparatus, amplifier apparatus, radio apparatus and reproducing apparatus |
| 08/27/2009 | WO2009103348A1 Pin-diode linearized automatic gain control circuits |
| 08/27/2009 | WO2007039640A8 Receiving circuit for an information engineering receiving device |
| 08/27/2009 | US20090214056 Sound quality adjustment device |
| 08/27/2009 | US20090212867 Integrated circuit device and electronic instrument |
| 08/27/2009 | US20090212859 Amplifier circuit and methods of operation thereof |
| 08/27/2009 | DE102009004833A1 Halbleiterleistungselement mit Vorspannungsschalter Semiconductor power device with bias switch |
| 08/26/2009 | EP2093892A1 A wireless system comprising an AMPS receciver and a CDMA receiver |
| 08/26/2009 | EP1029396B1 Receiver for a reconfigurable radio system and method therefor |
| 08/26/2009 | CN201298823Y CMOS current self-control crystal oscillator |
| 08/26/2009 | CN100533965C Integrated RF signal level detector usable for automatic power level control |
| 08/26/2009 | CN100533964C Output volume improving device and method for loudhailer of mobile communication terminal |
| 08/26/2009 | CN100533957C Preserving linearity of an isolator-free power amplifier by dynamically adjusting gain and phase |
| 08/26/2009 | CN100533955C Front stage amplifier with different modes |
| 08/25/2009 | US7580690 High-frequency receiver having a gain switch controller |
| 08/25/2009 | US7580684 Programmable radio transceiver |
| 08/25/2009 | US7580532 Multi-channel pulse width modulation apparatus |
| 08/25/2009 | US7580531 Dynamic range reducing volume control |
| 08/25/2009 | US7580530 Audio characteristic correction system |
| 08/25/2009 | US7580482 Joint, adaptive control of equalization, synchronization, and gain in a digital communications receiver |
| 08/25/2009 | US7579912 Method and system for multiple tuner application using a low noise broadband distribution amplifier |
| 08/20/2009 | US20090208035 Volume control apparatus and volume control program |
| 08/20/2009 | US20090208034 Audio signal processing circuit |
| 08/20/2009 | US20090208033 Digital automatic gain control |
| 08/20/2009 | US20090206932 Low noise amplifier gain controlled scheme |
| 08/20/2009 | DE202009007576U1 CATV-Verstärker CATV amplifier |
| 08/20/2009 | DE202009006103U1 Rückwirkungsfreier, elektromechanischer Lautstärkesteller für Lautsprecher in pilottonüberwachten elektroakustischen Gefahrenmeldesystemen Reactionless, electromechanical volume control for speakers in pilottonüberwachten electroacoustic hazard detection systems |
| 08/19/2009 | EP2091145A1 Pop noise suppression apparatus and audio output system utilizing the same |
| 08/19/2009 | EP1410618B1 Integrated upstream amplifier for cable modems and cable set-top boxes |
| 08/19/2009 | CN101512898A Volume control circuits for use in electronic devices and related methods and electronic devices |
| 08/19/2009 | CN101511541A Abrasive compacts |
| 08/19/2009 | CN101510786A Receiver with low power consumption |
| 08/19/2009 | CN100530953C Automatic control method for RF amplifier gain based on varying electrical bridge principle |
| 08/19/2009 | CN100530952C An amplifier gain control circuit of wireless transceiver |
| 08/19/2009 | CN100530940C Gain fluctuation regulation circuit and method |
| 08/18/2009 | US7577263 System for audio signal processing |
| 08/18/2009 | US7577259 Method and apparatus for extending band of audio signal using higher harmonic wave generator |
| 08/13/2009 | WO2009100381A1 Multi-mode power amplifiers |
| 08/13/2009 | US20090203336 Detector With Complementary Response Slope |
| 08/13/2009 | US20090203311 Radio wave reception device, radio wave clock, and repeater |
| 08/13/2009 | US20090201091 System and method for controlling attenuator |
| 08/13/2009 | US20090201090 Signaling system with low-power aut0matic gain control |
| 08/13/2009 | DE102009007687A1 Analogschaltersteuerung Analog switch control |
| 08/12/2009 | EP1665699A4 Dual mode multi-slot egprs transmitter |
| 08/12/2009 | EP1649603A4 Optical receiver having an open loop automatic gain control circuit |
| 08/12/2009 | CN201290093Y Automatic gain compensation and linearity control device of power amplifier |
| 08/12/2009 | CN101507111A Multi-function passive frequency mixer |
| 08/12/2009 | CN101507103A Multi-function passive frequency mixer |
| 08/12/2009 | CN101507102A Multi-function passive frequency mixer |
| 08/11/2009 | US7574010 System and method for adjusting an audio signal |
| 08/11/2009 | US7574005 Howling frequency component emphasis method and apparatus |
| 08/11/2009 | US7573335 Automatic gain control (AGC) with lock detection |
| 08/06/2009 | WO2009079468A3 Amplifier with dynamic bias |
| 08/06/2009 | US20090196437 Muting control device, muting control method, and muting control program |
| 08/06/2009 | US20090196436 Portable device, method of operating the portable device, and computer program |
| 08/06/2009 | US20090195351 Information processing device and information processing method |
| 08/06/2009 | US20090195308 Automatic gain control circuit |
| 08/05/2009 | EP2086125A2 Data transmission in a TDMA system |
| 08/05/2009 | EP2086110A2 Method for automatically controlling at least one acoustic parameter |
| 08/05/2009 | EP2084813A1 Digital signal processing |
| 08/05/2009 | CN101501987A Improvements in or relating to automatic gain control of radio devices |
| 08/05/2009 | CN101499807A Self-calibration system and method for mobile phone power |
| 08/05/2009 | CN101499783A Gain automatic regulating circuit and electronic product using the same |
| 08/05/2009 | CN101499782A Output power controlling circuit design method for radio frequency power amplifier |
| 08/05/2009 | CN100525121C Volume adjusting method of frequency-modulated radio with cell phone |
| 08/05/2009 | CN100525089C Automatic gain controller for transceiver devices and method |
| 08/05/2009 | CN100525088C Device and method for determining the level of an input signal intended to be applied to a receiving system |
| 08/04/2009 | US7570946 Method for determining the signal strength at the input of a tuner |
| 08/04/2009 | US7570709 Automatic transmit power control loop with modulation averaging |
| 07/30/2009 | WO2009093172A1 Improvements in or relating to radio receivers |
| 07/30/2009 | WO2009093154A1 Automatic gain control in a radio receiver circuit, and related interface |
| 07/30/2009 | US20090191826 High-Efficiency Envelope Tracking Systems and Methods for Radio Frequency Power Amplifiers |
| 07/30/2009 | US20090191820 Signal value holding apparatus, signal value holding method, signal value control system, signal value control method, playback apparatus, and playback method |
| 07/30/2009 | US20090190779 Method and apparatus to automatically control audio volume |
| 07/30/2009 | US20090190778 Method and system for assigning independent audio volume settings to components, channels, and media content |
| 07/30/2009 | US20090190767 System and method for a device sound interface manager |
| 07/30/2009 | US20090190699 Gain control method and apparatus |
| 07/30/2009 | US20090189690 Feed-forward automatic-gain control amplifier (ffagca) for biomedical applications and an associated method |
| 07/30/2009 | US20090189689 Power supply processing for power amplifiers |
| 07/29/2009 | EP2082480A2 Audio dynamics processing using a reset |
| 07/29/2009 | EP2082243A1 Radio frequency handling device |
| 07/29/2009 | CN100521818C Multichannel pulsewidth modulator |
| 07/29/2009 | CN100521521C Automatic gain control method for radio communication mobile station |
| 07/29/2009 | CN100521520C Voltage-adjusting amplifier for signal processing system |
| 07/29/2009 | CN100521509C Gain changeable amplifier |
| 07/28/2009 | US7567898 Regulation of volume of voice in conjunction with background sound |
| 07/28/2009 | US7567679 System and method for controlling sound volume |
| 07/28/2009 | US7567675 System and method for automatic multiple listener room acoustic correction with low filter orders |
| 07/28/2009 | US7567126 Variable gain amplifier and control method thereof |