| Patents for H03G 3 - Gain control in amplifiers or frequency changers (20,162) |
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| 08/07/2012 | US8238579 Information processing apparatus |
| 08/07/2012 | US8238566 Apparatus for providing sound effects according to an image and method thereof |
| 08/07/2012 | US8237504 Microwave variable power solid state power amplifier (SSPA) with constant efficiency and linearity |
| 08/07/2012 | US8237499 Feedforward controlled envelope modulator and feedforward control circuit thereof |
| 08/02/2012 | WO2012033942A3 Dynamic compensation of audio signals for improved perceived spectral imbalances |
| 08/02/2012 | US20120195444 Electronic device and method of dynamically correcting audio output of audio devices |
| 08/02/2012 | US20120195443 Method and apparatus for outputting audio signal |
| 08/01/2012 | EP2481222A2 Volume adjustment based on listener position |
| 08/01/2012 | CN202364228U AGC (Automatic Gain Control) optical receiving module circuit |
| 08/01/2012 | CN202364181U Automobile horn volume control device |
| 08/01/2012 | CN102624407A Radio-frequency emission front-end circuit with automatic gain control |
| 08/01/2012 | CN102624346A Automatic gain amplification circuit with inverse exponential characteristic type digital control circuit |
| 08/01/2012 | CN102624345A Memristor-based automatic gain control circuit |
| 08/01/2012 | CN102624344A Power amplifier |
| 08/01/2012 | CN102624339A Series envelope tracking power supply and control system thereof |
| 07/31/2012 | US8233857 Detector with bandwidth compensation |
| 07/31/2012 | US8233640 Sound output device |
| 07/26/2012 | WO2012099340A2 Variable gain amplifier |
| 07/26/2012 | WO2012098754A1 Output-mode switching amplifier |
| 07/26/2012 | US20120189139 Semiconductor Integrated Circuit Having a Switched Charge Pump Unit and Operating Method Thereof |
| 07/26/2012 | US20120189135 Electronic device, relay server, data transmitting/receiving system, and data transmitting/receiving method |
| 07/26/2012 | US20120189131 Low-pitched sound enhancement processing apparatus, speaker system and sound effects apparatus and processes |
| 07/26/2012 | US20120188018 Constant-gain power amplifier |
| 07/25/2012 | EP2479888A1 Power supply circuit of power amplifier, and terminal |
| 07/25/2012 | CN202353521U Radio-frequency modulation output circuit and gain compensation amplifier thereof |
| 07/25/2012 | CN102612805A Active bias control circuit for an amplifier and method of power up sequencing the same |
| 07/25/2012 | CN102611963A Intelligent sound volume adjusting system of vehicular sounder |
| 07/25/2012 | CN102611398A Semiconductor integrated circuit having a switched charge pump unit and operating method thereof |
| 07/25/2012 | CN102607615A Gain self-compensating method for linear array CCD (Charge-coupled Device) pixel level signal and compensating circuit |
| 07/24/2012 | US8229137 Volume control circuits for use in electronic devices and related methods and electronic devices |
| 07/24/2012 | US8229132 Microphone apparatus |
| 07/24/2012 | US8229125 Adjusting dynamic range of an audio system |
| 07/19/2012 | WO2012097151A1 Sound level doseage system for vehicles |
| 07/19/2012 | WO2012096617A1 Musical dynamics alteration of sounds |
| 07/19/2012 | US20120184233 Combined rf detector and rf attenuator with concurrent outputs |
| 07/19/2012 | US20120183151 System and method for sound system simulation |
| 07/19/2012 | US20120183150 Sound tuning method |
| 07/19/2012 | US20120182478 Audio/video device having a volume control function for an external audio reproduction unit by using volume control buttons of a remote controller and volume control method therefor |
| 07/19/2012 | US20120182081 Dynamic Range Compression Circuit and Class D Amplifier |
| 07/19/2012 | US20120182067 Switched-capacitor programmable-gain amplifier |
| 07/18/2012 | EP2477337A1 Attenuation control device, signal attenuation device, automatic gain control device, attenuation control method, and automatic gain control method |
| 07/18/2012 | EP2477330A2 Adjacent channel interference mitigation during the acquisition phase in OFDM communications |
| 07/18/2012 | CN1862952B High frequency power amplifier, transmitter and mobile communication terminal using the power amplifier |
| 07/18/2012 | CN102598503A The double integral method of powering up or down a speaker |
| 07/18/2012 | CN102594446A Method and apparatus for adjusting the gain of an amplifier of an optical receiver module based on link bit error rate (ber) measurements |
| 07/18/2012 | CN102594276A Gain calibration system for instrument amplifier and gain calibration method |
| 07/18/2012 | CN102594275A Automatic gain control device and automatic gain control method |
| 07/18/2012 | CN102594264A Radio frequency power amplifier and input matching circuit thereof |
| 07/18/2012 | CN101507102B Multi-function passive frequency mixer |
| 07/17/2012 | US8224469 Systems and methods for controlling audio volume in the processor of a high definition audio codec |
| 07/17/2012 | US8223994 Method of limiting the maximum permitted sound volume in an earphone, and an earphone for carrying out the method |
| 07/17/2012 | US8223993 Signal conditioner for subwoofers |
| 07/17/2012 | US8223981 Wide dynamic range microphone |
| 07/17/2012 | US8222734 Hybrid integrated circuit device and electronic device |
| 07/12/2012 | US20120179456 Loudness maximization with constrained loudspeaker excursion |
| 07/12/2012 | US20120178384 Apparatus and methods for biasing a power amplifier |
| 07/12/2012 | US20120177228 Process for adjusting the sound volume of a digital sound recording |
| 07/12/2012 | US20120177227 Sound volume control circuit |
| 07/12/2012 | US20120177226 Battery power monitoring and audio signal attenuation |
| 07/12/2012 | US20120177225 Smart Un-muting Based on System Event with Smooth Volume Control |
| 07/12/2012 | US20120177222 Dynamic audio parameter adjustment using touch sensing |
| 07/12/2012 | US20120176196 Power management system for multi-carriers transmitter |
| 07/12/2012 | DE10038616B4 Verfahren und Anordnung zur Störunterdrückung in einer Empfängerschaltung Method and apparatus for interference in a receiver circuit |
| 07/11/2012 | EP2475093A2 System and method for antenna diversity using equal power joint maximal ratio combining |
| 07/11/2012 | EP1665699B1 Dual mode multi-slot EGPRS transmitter |
| 07/11/2012 | CN202334450U 一种音量自动控制调节装置 Automatically adjusting a loudness control device |
| 07/11/2012 | CN202334449U 具有功率检测功能的射频或微波放大电路 With power detection function radio frequency or microwave amplifier |
| 07/11/2012 | CN202334448U Audio operation amplifying circuit structure and audio output circuit structure |
| 07/11/2012 | CN202331218U 高精度向日自动跟踪控制装置 The Japanese high-precision automatic tracking control device |
| 07/11/2012 | CN202320082U 一种可调节喇叭音量的汽车 An adjustable speaker volume car |
| 07/11/2012 | CN102577433A Volume adjustment based on listener position |
| 07/11/2012 | CN102577112A Electronic device and integrated circuit comprising a gain control module and method therefor |
| 07/11/2012 | CN102577101A Detector device, and amplification device, transmission device, and communication device using the detector device |
| 07/11/2012 | CN102572160A Ring volume controller and mobile phone with same |
| 07/11/2012 | CN102571014A Voltage type automatic gain control circuit |
| 07/11/2012 | CN102571013A Automatic gain control device and method for communication receiver |
| 07/11/2012 | CN102571012A Terminal equipment and volume regulation method |
| 07/11/2012 | CN102571011A Method and device for adjusting sound volume |
| 07/11/2012 | CN102571010A Volume control system and method |
| 07/11/2012 | CN102571009A Feedforward automatic gain control circuit working in extremely low voltage current mode |
| 07/11/2012 | CN102571000A Amplifier and amplifier control method |
| 07/11/2012 | CN101442325B Amplifier with band-pass filtering function |
| 07/10/2012 | US8219049 Generating a process and temperature tracking bias voltage |
| 07/10/2012 | US8218791 Volume control feature for use with a multimedia device |
| 07/10/2012 | US8218790 Techniques for customizing control of volume level in device playback |
| 07/10/2012 | US8218780 Methods and systems for blind dereverberation |
| 07/10/2012 | US8217717 Linear detector with added diode feedback loop |
| 07/10/2012 | US8217716 Bias circuit, high-power amplifier, and portable information terminal |
| 07/10/2012 | US8217251 Interactive display |
| 07/10/2012 | CA2621522C Transmitter architectures for communications systems |
| 07/10/2012 | CA2621145C Transmitter architectures for communications systems |
| 07/05/2012 | WO2012088798A1 Power amplifier circuit and mobile terminal |
| 07/05/2012 | US20120170772 Method and apparatus for dynamically adjusting volume |
| 07/05/2012 | US20120170771 Method Of Leveling A Plurality Of Audio Signals |
| 07/05/2012 | US20120170770 Charge pump circuit |
| 07/05/2012 | US20120169424 Apparatus and Method for Providing Amplifier Linearity Information |
| 07/04/2012 | EP2102992B1 Closed-loop digital power control for a wireless transmitter |
| 07/04/2012 | CN202309626U 一种通过射频路径供电的天线放大器 One kind of path through the RF antenna amplifier power |
| 07/04/2012 | CN1973434B Method for correcting metadata affecting the playback loudness and dynamic range of audio information |
| 07/04/2012 | CN102549930A Attenuation control device, signal attenuation device, automatic gain control device, attenuation control method, and automatic gain control method |