| Patents for H03G 3 - Gain control in amplifiers or frequency changers (20,162) |
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| 04/16/2009 | US20090096527 Automatic gain control circuit and low noise amplifying circuit |
| 04/16/2009 | DE102007026930B4 Endstufensystem Amplifier system |
| 04/15/2009 | EP2048909A1 Combined open and closed loop power control with differential measurement |
| 04/15/2009 | EP2047594A1 Passive amplification of signals |
| 04/15/2009 | EP2047591A1 Multi-function passive frequency mixer |
| 04/15/2009 | EP1568192B1 Compensating for analog radio component impairments to relax specifications |
| 04/15/2009 | EP1553695B1 Start signal output circuit |
| 04/15/2009 | CN101411060A Loudness modification of multichannel audio signals |
| 04/15/2009 | CN100479504C Tuner circuit and digital broadcast receiver with low distortion performance and low power consumption |
| 04/14/2009 | US7519442 Process for adjusting the sound volume of a digital sound recording |
| 04/14/2009 | US7519344 Bandpass amplifier, method, and system |
| 04/14/2009 | US7519186 Noise reduction systems and methods for voice applications |
| 04/14/2009 | US7518454 Operational amplifier selecting one of inputs, and an amplifying apparatus using the OP amplifier the verification method |
| 04/14/2009 | US7518228 Hybrid integrated circuit device, and method for fabricating the same, and electronic device |
| 04/14/2009 | US7518056 Optimisation of MIDI file reproduction |
| 04/09/2009 | WO2009045517A1 Programmable-gain amplifier systems to facilitate low-noise, low-distortion volume control |
| 04/09/2009 | WO2007106165A3 Enhancing perceptions of the sensory content of audio and audio-visual media |
| 04/09/2009 | US20090093225 Method, rf module and test method for enabling power amplifier to support multiple powers |
| 04/09/2009 | US20090092265 Audio dosage control |
| 04/09/2009 | US20090092260 Automatic external defibrillator with enhanced clarity of audible prompts |
| 04/09/2009 | US20090091543 Handheld Electronic Devices Supporting Operation as a Musical Instrument with Touch Sensor Input and Methods and Computer Program Products for Operation of Same |
| 04/09/2009 | US20090091392 Bias circuit for the wireless transceiver |
| 04/09/2009 | US20090091391 Configurable feedback for an amplifier |
| 04/09/2009 | US20090091390 Programmable-gain amplifier systems to facilitate low-noise, low-distortion volume control |
| 04/09/2009 | US20090091387 Switched-capacitor variable gain amplifier having high voltage gain linearity |
| 04/09/2009 | US20090091381 Gain control device |
| 04/09/2009 | DE19702007B4 Hochfrequenz-Leistungsgenerator High-frequency power generator |
| 04/09/2009 | DE102007046340A1 Verfahren und Vorrichtung zum Regeln eines Leistungsverstärkers Method and apparatus for controlling a power amplifier |
| 04/09/2009 | DE102007045309A1 Schaltungsanordnung und Verfahren zur Leistungsregelung und Verstärkeranordnung Circuit arrangement and method for power control and amplifier arrangement |
| 04/08/2009 | EP2045917A2 Adaptive RF amplifier prelimiter |
| 04/08/2009 | EP2045916A2 Automatic gain control stress measurement for digital carriers |
| 04/08/2009 | EP2045914A1 Polar-modulation transmission device |
| 04/08/2009 | EP2044689A1 A method of limiting the maximum permitted sound volume in an earphone, and an earphone for carrying out the method |
| 04/08/2009 | EP2044668A2 Polar transmitter having a dynamically controlled voltage regulator and method for operating same |
| 04/08/2009 | CN101406046A Automatic gain control circuit |
| 04/08/2009 | CN101405936A Audio system with parent maximum sound volume control function |
| 04/08/2009 | CN100477511C System and method for adjusting output power of power amplifier |
| 04/08/2009 | CN100477510C Apparatus and method for automatically regulating microphone input level of portable terminal |
| 04/07/2009 | US7516065 Apparatus and method for correcting a speech signal for ambient noise in a vehicle |
| 04/07/2009 | US7515891 Programmable gain amplifier (PGA) with AGC in receiver section |
| 04/07/2009 | US7515890 Radio receiver and radio receiving method |
| 04/07/2009 | US7515886 Digital broadcast receiving tuner and receiving device incorporating it |
| 04/07/2009 | US7515885 Communications signal amplifiers having independent power control and amplitude modulation |
| 04/07/2009 | US7515648 Transmitter and wireless communication apparatus using same |
| 04/07/2009 | US7515001 AC amplifier and piezoelectric vibrator oscillator |
| 04/07/2009 | US7515000 Active bias circuit for low-noise amplifiers |
| 04/07/2009 | US7514665 Differential amplifier circuit with rectifier for optical pick-up device |
| 04/02/2009 | WO2009042473A2 Systems and methods for monitoring temporal volume control |
| 04/02/2009 | WO2009041717A1 Electronic device |
| 04/02/2009 | WO2009039875A1 Distance measuring instrument and method |
| 04/02/2009 | WO2005084371A3 Programmable gain amplifier with hybrid digital/analog architecture |
| 04/02/2009 | US20090088224 Adaptive volume control |
| 04/02/2009 | US20090088102 Gain control methods for wireless devices and transmitters |
| 04/02/2009 | US20090086997 System and method for increasing ring tone volume |
| 04/02/2009 | US20090086859 Receiving unit receiving digital television broadcasting |
| 04/02/2009 | US20090085665 Variable gain amplifying device |
| 04/01/2009 | EP2041907A2 Multi-carrier receiver for wireless communication |
| 04/01/2009 | EP2041866A1 Class d audio amplifier |
| 04/01/2009 | EP2041864A1 Multi-function passive frequency mixer |
| 04/01/2009 | CN201216014Y Microphone with volume control function |
| 04/01/2009 | CN201215998Y Audio processor having automatic gain control function |
| 04/01/2009 | CN101401301A A scheme to alleviate signal degradation caused by digital gain control loops |
| 04/01/2009 | CN101399874A Mobile phone bell volume reinforcing apparatus and method |
| 04/01/2009 | CN101399524A Circuit arrangement and method for power regulation and amplifier arrangement |
| 04/01/2009 | CN101399523A Gain control method and system for playing audio signal |
| 04/01/2009 | CN100474763C Power amplifier clipping circuit for minimized output of distortion |
| 03/31/2009 | US7512387 Method and control system for controlling the output power of an RF amplifier system |
| 03/31/2009 | US7512245 Method for detection of own voice activity in a communication device |
| 03/31/2009 | US7511573 Input/output signals preserver circuit of amplification circuits |
| 03/26/2009 | WO2009037364A1 Wireless communications system, device and method for compensation of power losses |
| 03/26/2009 | US20090081968 Power Amplifier Controller With Polar Transmitter |
| 03/26/2009 | US20090080673 Systems and methods for automatically controlling the volume of a motor vehicle entertainment system |
| 03/26/2009 | US20090080667 Apparatus and method for managing call quality |
| 03/26/2009 | US20090080577 Communication semiconductor integrated circuit, radio communication system, and adjustment method of gain and offset |
| 03/26/2009 | US20090079524 Multi-band tunable resonant circuit |
| 03/26/2009 | US20090079504 Circuit Arrangement And Method For Power Regulation And Amplifier Arrangement |
| 03/26/2009 | US20090079503 Overload recovery circuit for folded cascode amplifiers |
| 03/26/2009 | US20090079501 Programmable gain circuit and amplification circuit |
| 03/26/2009 | US20090079500 Analog variable gain amplifier with improved dynamic range characteristics |
| 03/26/2009 | US20090079498 Offset cancellation in a capacitively coupled amplifier |
| 03/26/2009 | DE102007044654A1 Electronic sound level reducing arrangement for controlling interpersonal contact with electrically amplified entertainment article, has signal generator controlling damping member to trigger damping of signals amplified for audio playback |
| 03/25/2009 | EP2038999A2 Method and apparatus for providing adaptive supply voltage control of a power amplifier |
| 03/25/2009 | CN101394519A Gain control method for receiver and apparatus thereof |
| 03/25/2009 | CN101394496A Front-end for digital video receiver and method for automatic gain control thefeof |
| 03/25/2009 | CN101394157A Variable gain amplifier having wide gain variation and wide bandwidth |
| 03/25/2009 | CN101394156A Audio processing system and processing method thereof |
| 03/25/2009 | CN101394155A Inner automatic gain control loop for VGA |
| 03/25/2009 | CN101394154A Automatic gain dual channel audio pre-amplifier |
| 03/25/2009 | CN101394151A Automatic gain compensation and linear control method and device for power amplifier |
| 03/25/2009 | CN100472945C User unit of bias power amplifier and method |
| 03/25/2009 | CN100472944C Multistage amplifier and method for improving power efficiency of the multistage amplifier |
| 03/25/2009 | CN100472636C Audio-frequency silenced soft removing apparatus and method |
| 03/24/2009 | US7509059 Optical receiver and data communication apparatus comprising same |
| 03/24/2009 | US7508427 Apparatus and method for amplifying analog signal and analog preprocessing circuits and image pick-up circuits |
| 03/24/2009 | US7508266 Method for enhancing linearity of a transistor amplifier using switched capacitive loads |
| 03/24/2009 | US7508262 Envelope elimination and restoration amplifier harmonic energy recovery system and method |
| 03/19/2009 | WO2009036399A1 Local oscillator buffer and mixer having adjustable size |
| 03/19/2009 | US20090074208 Method for outputting background sound and mobile communication terminal using the same |
| 03/19/2009 | US20090074194 Ambient condition detector with selectable pitch alarm |
| 03/19/2009 | US20090074107 Method and apparatus for optimizing transmitter power efficiency |