Patents
Patents for H03G 3 - Gain control in amplifiers or frequency changers (20,162)
09/2005
09/28/2005EP1580882A1 Audio enhancement system and method
09/28/2005EP1580881A2 High-frequency power amplifier and communication apparatus
09/28/2005EP1579370A1 Method of automatically setting the gain of an interrogator receiver within a non-contacting identification system
09/28/2005CN1675833A Ring triggered mute
09/28/2005CN1675832A Variable gain amplifier with improved control characteristics linearity
09/28/2005CN1675827A A power amplifier system
09/28/2005CN1675690A Optical disk system with non-linearly controlled amplifier
09/28/2005CN1674434A A mobile communication terminal apparatus, a variable gain amplifier circuit and a gain control circuit
09/27/2005US6950641 Apparatus, and an associated method, for increasing receiver sensitivity of a direct conversion receiver
09/27/2005US6950636 Power amplifier control driver having over-current protection and linear control
09/22/2005WO2005088842A1 Transmission device and radio communication device
09/22/2005WO2005086801A2 Companion microphone system and method
09/22/2005US20050210529 Coaxial communication active tap device and distribution system
09/22/2005US20050209918 Listening supplement that provides an additional or alternative means of media content delivery of periodical publications for subscribers of the aforementioned periodical publications and a process for establishing the same
09/22/2005US20050209718 Digital audio volume control
09/22/2005US20050208923 High frequency peak detector and applications thereof
09/22/2005US20050208919 Serial bus interface for direct conversion receiver
09/22/2005US20050208916 Direct conversion receiver architecture
09/22/2005US20050208910 Variable-gain low noise amplifier for digital terrestrial applications
09/22/2005US20050208909 High-frequency power amplifier and communication apparatus
09/22/2005US20050208907 Detecting and maintaining linearity in a power amplifier system through envelope power comparisons
09/22/2005US20050207594 Sound signal processing apparatus and sound signal processing method
09/22/2005US20050207583 Audio enhancement system and method
09/22/2005US20050207332 Picture/sound output device with automatic output adjustment function
09/22/2005US20050206456 High frequency power amplifier module and wireless communication apparatus
09/22/2005US20050206455 Method to control the supply power being provided to a power amplifier
09/22/2005US20050206447 Method to prevent saturation in power amplifier control loop
09/22/2005DE19915163B4 Verfahren und Vorrichtung zur digitalen Rahmensynchronisation eines Übertragungssignals Method and apparatus for frame synchronization of a digital transmission signal
09/22/2005DE102004009503A1 High frequency power amplifier control method, for mobile radio terminal, deriving automatic power control voltage from desired power level and value representing difference between antenna directional coupler voltages
09/21/2005EP1578036A1 Wireless communication device
09/21/2005EP1576751A2 Signal distribution system cascadable agc device and method
09/21/2005EP1576728A2 System for regulating the level of an amplified signal in an amplification chain.
09/21/2005EP1576725A2 Thermal feedback for switch mode amplification
09/21/2005CN1672377A Multi-stage automatic gain control for spread-spectrum receivers
09/21/2005CN1672325A Acoustical virtual reality engine and advanced techniques for enhancing delivered sound
09/21/2005CN1671043A High-frequency power amplifier and communication apparatus
09/21/2005CN1220371C Shock sound prevention circuit
09/21/2005CN1220327C Feedforward amplifier and power amplifying method using feedforward amplifier
09/21/2005CN1220064C Distortion detector
09/20/2005US6946981 Transmitter and method thereon
09/20/2005US6946910 Configurable feedback path in an amplitude control system
09/15/2005WO2005086362A1 Receiving circuit, and receiving apparatus and transmitting/receiving apparatus using the receiving circuit
09/15/2005WO2005086360A1 Load insensitive power amplifier
09/15/2005US20050202792 Method for controlling LNA gain state
09/15/2005US20050201570 Engine sound processing system
09/15/2005US20050201565 Apparatus for providing sound effects according to an image and method thereof
09/15/2005US20050200407 High frequency power amplifier and wireless communication module
09/15/2005US20050200406 Gain control methods and systems in an amplifier assembly
09/15/2005DE10236479B4 Mobiltelefon mit Leistungssteuerung Mobile phone with power control
09/15/2005DE102004019353B3 Control system using proximity sensor and evaluation unit for hearing aid enables control functions when user's hand is moved near ear with installed hearing aid
09/15/2005DE102004006957A1 Verfahren und Vorrichtung zum Verstärken eines Empfangssignals Method and apparatus for amplifying a reception signal
09/14/2005EP1575164A2 Sound signal processing apparatus and sound signal processing method
09/14/2005EP1575163A2 Automobile audio system and signal processing method therefor
09/14/2005EP1575162A1 Audio amplifier
09/14/2005EP1575034A1 Input sound processor
09/14/2005EP1575028A2 System for simulating the sound of an engine
09/14/2005EP1574084A2 Nxm crosspoint switch with band translation
09/14/2005EP1573948A2 Digital audio production device
09/14/2005EP1573931A2 Integrated crosspoint switch with band translation
09/14/2005EP1573906A1 Preserving linearity of an isolator-free power amplifier by dynamically adjusting gain and phase
09/14/2005EP1093686B1 Improved exponential current generator and method
09/14/2005CN2726214Y Sound player with volume control module
09/14/2005CN1669251A Method and system for all digital gain control
09/14/2005CN1669214A Start signal output circuit
09/14/2005CN1668124A Method of proceeding gain adjustment for downloadable music file
09/14/2005CN1667702A Input sound processor
09/14/2005CN1219359C Automatic gain control circuit and method of direct sequence spread spectrum receiver
09/14/2005CN1219358C Digital broadcasting receiver
09/14/2005CN1219353C Device and method for controlling volume by PWM pulses
09/13/2005US6943626 Wideband precision fixed-gain amplifier architecture, apparatus, and method
09/09/2005WO2005084016A1 System and method for tv automatice gain control (agc)
09/09/2005WO2005083891A1 Transmitter apparatus and wireless communication apparatus
09/08/2005US20050197092 Analog peak detection circuitry for radio receivers
09/08/2005US20050197077 Method for monitoring an RF power amplifier, and an RF device, a monitoring device, and an MR system corresponding thereto
09/08/2005US20050197076 Radio communication device and control method of amplification circuit thereof
09/08/2005US20050197066 Non-linear distortion compensation circuit for multi-carrier transmission
09/08/2005US20050195996 Companion microphone system and method
09/08/2005US20050195995 Audio mixing using magnitude equalization
09/08/2005US20050195994 Apparatus and method for improving voice clarity
09/08/2005US20050195992 Input sound processor
09/08/2005US20050195984 Sound reproducing method and apparatus
09/08/2005US20050195983 Method of analog math processing for controlled distortion of an electric audio signal and device
09/08/2005US20050195053 Variable capacitor circuit and integrated circuit containing the same
09/08/2005US20050195039 Radio frequency variable gain amplifier with linearity insensitive to gain
09/08/2005US20050195029 Device for detecting the power of a signal and integrated circuit with amplifier and related power detection device
09/08/2005US20050195028 Power amplifier module for wireless communication devices
09/08/2005US20050195027 Programmable gain instrumentation amplifier including a composite amplifier for level shifting and improved signal-to-noise ratio
09/08/2005US20050195026 Sectional power/voltage/current limiter for a multi-phase amplifier
09/08/2005DE102004007635A1 Amplifier for broadband amplifying circuits, e.g. in video transmissions, has programmable amplification and a transistor device with counter-coupling resistors
09/07/2005EP1571884A2 Sound reproducing method and apparatus
09/07/2005EP1570571A2 Gain compensation over temperature and frequency variations in wireless transceivers
09/07/2005EP1570102A2 Method for coating piston rings for internal combustion engines
09/07/2005EP1504527B1 Digital automatic gain control for transceiver devices
09/07/2005EP1299922A4 Successive log video pad power detector and method
09/07/2005EP1040572B1 Low voltage, beta immune variable gain amplifier with high supply voltage rejection
09/07/2005CN1666413A AGC circuit
09/07/2005CN1666410A Semiconductor integrated circuit and semiconductor integrated circuit manufacturing method
09/07/2005CN1665150A Method and apparatus for frequency correction
09/07/2005CN1665128A Multi-level auto-gain control integrated circuit system having gain indication function
09/07/2005CN1665127A Variable capacitor circuit and integrated circuit containing the same