Patents
Patents for H03J 7 - Automatic frequency control; Automatic scanning over a band of frequencies (3,745)
12/2002
12/18/2002CN1386352A Radio communication receiver
12/18/2002CN1096794C Method for reducing carrier recovery time in high difinition television receiver
12/12/2002WO2002100123A1 Radio communication apparatus and its reception timing estimating method
12/12/2002WO2002084870A3 Methods and apparatus for tuning rf-filters in radio receivers
12/11/2002EP1264428A2 Method for recording information that is transmitted via a radio frequency
12/11/2002CN1385048A Method and system for frequency spectrum resource allocation
12/11/2002CN1385019A Timing synchronizaation and phase/frequency correction of QPSK signals
12/11/2002CN1385000A Transceiver with local oscillator frequency settings using demodulated bit rate
12/04/2002EP1262790A2 Method and apparatus for determining time for GPS receivers
12/03/2002US6490010 AFC circuit, carrier recovery circuit and receiver device capable of regenerating a carrier reliably even at the time of low C/N ratio
11/2002
11/28/2002US20020177458 Mobile station capable of performing automatic frequency control based on correspondence of frequency error and TCXO control voltage to base station
11/28/2002US20020177423 Tuner and method of aligning a tuner
11/27/2002EP1260830A2 A GPS receiver and method for processing GPS signals
11/27/2002EP1260049A2 A modulation scheme for fdd/tdd transceivers
11/27/2002CN1382320A Method for regulating frequency offset in base-station receiver of data communications system
11/27/2002CN1095279C Automatic broadcasting channel selection method and television receiver using the method
11/21/2002WO2002093748A1 Reference oscillator with automatic compensation for aging and temperature
11/21/2002US20020173284 Reference oscillator
11/21/2002US20020171581 Method and apparatus for providing location-based information via a computer network
11/20/2002CN1381132A Channel selection apparatus
11/14/2002WO2002035711A8 Filter for electromagnetically transmitted signals
11/14/2002US20020168953 Frequency scanning receiver
11/13/2002EP0872051B1 Method and apparatus for controlling frequency of a multi-channel transmitter
11/13/2002CN1094278C 具有初始频率截获装置的移动通信终端 Having an initial frequency interception device of a mobile communication terminal
11/12/2002US6480709 Method for reducing scan time in a radio receiver
11/12/2002US6480707 Channel selection apparatus
11/07/2002WO2002089326A1 Receiver front-end filter tuning
11/06/2002CN1094002C Automatic frequency correcting device and method for radio calling system
10/2002
10/31/2002US20020160736 Frequency scanning receiver
10/30/2002EP1253715A1 Tuner and method of aligning a tuner
10/24/2002WO2002084870A2 Methods and apparatus for tuning rf-filters in radio receivers
10/24/2002US20020154249 Intermediate frequency circuit of television tuner, which is not influenced by saw filter characteristics
10/22/2002US6469750 Automatic fine-tuning control voltage generating circuit having level shift circuit
10/17/2002US20020151287 Receiver front-end filter tuning
10/17/2002DE10116886A1 Frequency processing circuit optimisation method for HF heterodyne receiver with separate tuning of heterodyne stages on opposite sides of band-pass filter
10/16/2002CN1375149A 通信系统 Communications systems
10/16/2002CN1375127A PLL with memory for electronic alignments
10/16/2002CN1092883C Demodulator control system and receiver capable of quickly acquiring desired carrier wave
10/15/2002US6466803 Multi-mode communications system with efficient oscillator synchronization
10/15/2002US6466630 Symbol synchronization in a continuous phase modulation communications receiver
10/10/2002WO2001086316A3 Method and apparatus for compensating local oscillator frequency error
10/10/2002US20020146086 Method and phase-locked loop for synchronization with a subcarrier contained in an intelligence signal
10/08/2002US6463266 Radio frequency control for communications systems
10/03/2002WO2001024415A9 Method and apparatus for offset cancellation in a wireless receiver
10/03/2002WO2000011925A3 Circuit for frequency synthesis and modulation and radio-telephone station
10/02/2002EP1245103A1 Offset correction in a spread spectrum communication system
10/02/2002CN1091999C Tuning circuit for receiver, especially for television receiver
09/2002
09/25/2002EP1032988A4 Apparatus for low power radio communications
09/25/2002CN1371180A Moving station capable of controlling frequency automatically
09/25/2002CN1091553C Small radio receiver
09/24/2002US6456823 System and method for recovering a pilot tone in a local multipoint distribution system signal
09/24/2002US6456672 Automatic frequency control communication system
09/19/2002DE10111402A1 Verfahren und Phasenregelkreis zur Synchronisation auf einen in einem Nutzsignal enthaltenen Hilfsträger The method and phase-locked loop for synchronization with a subcarrier contained in a useful signal
09/18/2002EP1241818A1 Receiver apparatus and method for controlling reference frequency in the receiver apparatus
09/18/2002EP0847622B1 Process for storing of data of a received carrier frequency of a broadcast transmitter
09/17/2002US6452919 Assessment of digital signals, especially radio data signals
09/17/2002CA2231891C Radio apparatus
09/12/2002US20020127984 Frequency tuning of radio transceivers
09/11/2002EP1239625A2 Receiver and method for an initial synchronizing of the receiver to the carrierfrequency of a desired channel
09/11/2002EP1239590A1 Method and phase locked loop for synchronization to a subcarrier that is comprised in a wanted signal
09/11/2002CN1090849C Frequency error correction in satellite-mobile communications system
09/11/2002CN1090841C Integrated circuit for freqency modulation
09/06/2002WO2002069493A2 Automatic frequency control systems and methods for joint demodulation
09/05/2002US20020123311 Radio communication receiver
09/04/2002CN1367631A Portable radio terminal and automatic frequency control method
09/03/2002US6445909 Radio receiver
09/03/2002US6445425 Automatic fine tuning of receiver for digital television signals
08/2002
08/29/2002WO2002067456A1 Afc controller
08/29/2002WO2002035711A3 Filter for electromagnetically transmitted signals
08/29/2002DE10108110A1 Empfänger und Verfahren zum anfänglichen Synchronisieren eines Empfängers auf die Trägerfrequenz eines gewünschten Kanals Receiver and method of initially synchronizing a receiver to the carrier frequency of a desired channel
08/28/2002EP1161799B1 Transmitter-receiver
08/15/2002US20020109793 Receiving device used in high-definition television
08/14/2002EP1133826B1 Frequency-stabilised transmitting/receiving arrangement
08/13/2002US6433734 Method and apparatus for determining time for GPS receivers
08/08/2002WO2001031774A9 Apparatus and method for changing crystal oscillator frequency
08/08/2002WO2001029980A9 Multi-mode communications system with efficient oscillator synchronization
08/08/2002WO2001026260A9 Method and apparatus for comparator tree structure for fast acquisition of offsets induced in a wireless receiver
08/08/2002WO2001024537A9 Method and apparatus for peak tracking a baseband signal
08/08/2002WO2001024376A9 Method and apparatus for identifying a pre-determined pattern from a received signal via correlation
08/08/2002US20020105387 Fractional and rapid response frequency synthesizer, and corresponding frequency synthesizing method
08/01/2002US20020102957 Radio signal receiving control device and the control method for the same
07/2002
07/31/2002EP1227586A2 Portable radio terminal and AFC control method
07/31/2002EP1226656A1 Multi-mode communications system with efficient oscillator synchronization
07/31/2002CN1361943A Tuning system for achieving rapid signal acquisition for a digital satellite receiver
07/25/2002WO2002058256A1 Method and apparatus for reducing scan time in a radio receiver
07/25/2002US20020098819 Method and apparatus for reducing scan time in a radio receiver
07/25/2002US20020098817 Portable radio terminal and AFC control method
07/25/2002US20020097344 Digital broadcasting receiver and channel information registration processing method in digital broadcasting receiver
07/24/2002EP1225739A1 Radio communication receiver
07/24/2002EP0894363B1 Automatic frequency control with adjacent channel interference protection
07/24/2002CN1088294C FM multiple broadcast receivers
07/18/2002WO2001009691A9 Narrow band scanning rf receiver
07/17/2002EP1223675A1 Method and device for compensating measurement errors caused by a drift in a reference clock
07/17/2002EP1223434A2 Combined GPS positioning system and communications system utilizing shared circuitry
07/17/2002EP1092292A4 Apparatus and method for protecting a communication device operating in an undesirable environment
07/16/2002US6421099 Automatic frequency tracking apparatus and method for a television signal receiving system
07/16/2002US6421002 GPS receiver utilizing a communication link
07/16/2002US6420916 Phase locked loop filter utilizing a tuned filter
07/11/2002US20020090040 Integrated circuit for detecting a received signal and circuit configuration
07/10/2002EP1221234A2 Method and apparatus for eliminating the effects of frequency offsets in a digital communication system
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