Patents
Sitemap › H03 - Basic electronic circuitry › H03J - Tuning resonant circuits; Selecting resonant circuits › H03J 7 - Automatic frequency control; Automatic scanning over a band of frequencies
Patents for H03J 7 - Automatic frequency control; Automatic scanning over a band of frequencies (3,745)
07/2003
07/30/2003EP1072091B1 Tuning system for search algorithm for a satellite receiver with lnb drift
07/24/2003US20030139879 GPS receiver and method for processing GPS signals
07/24/2003US20030138034 Direct conversion RF transceiver with automatic frequency control
07/24/2003US20030138032 Direct conversion RF transceiver for wireless communications
07/23/2003EP1330044A2 A direct conversion RF transceiver with automatic frequency control
07/23/2003EP1330043A2 A direct conversion RF transceiver with automatic transmit power control
07/23/2003EP1329027A2 Filter for electromagnetically transmitted signals
07/23/2003CN1115804C Radio communication appts.
07/22/2003US6597728 Device and method for correcting local oscillation frequency of radio reception device according to pilot synchronous detection
07/22/2003US6597408 Fine tuning method for digital television
07/17/2003WO2003058815A1 Circuit and method for processing afc signals
07/17/2003WO2003058749A1 Resonator tuning assembly and method
07/16/2003CN1114895C Local frequeny correction
07/15/2003US6593803 Active filter circuit
07/09/2003EP0904635B1 An apparatus, method and article of manufacture for carrier frequency compensation in an fm radio
07/08/2003US6590618 Method and apparatus for changing the channel or varying the volume level in a television receiver having a double screen mode function
07/08/2003CA2251921C Receiver with frequency offset correcting function
07/03/2003US20030122635 Resonator tuning assembly and method
07/02/2003CN1113463C Tuning control manner
07/02/2003CN1113250C GPS receiver and method for processing GPS signals
07/01/2003US6587523 Radio signal receiving apparatus and a method of radio signal reception
06/2003
06/19/2003US20030112377 TV tuner unit that is reduced in size
06/18/2003EP1319290A1 Method for frequency acquisition, especially for initial frequency acquisition, of a mobile communications device
06/18/2003EP1319268A1 Method for calibrating the frequency of an hf-oscillator in a mobile part of a mobile communications device
06/18/2003CN1112032C High speed channel detection, storage and switch device and its method
06/18/2003CN1111952C Method and system for tuning resonance modules
06/17/2003US6580900 Tuning arrangement
06/10/2003US6577853 Method and system for controlling frequency
05/2003
05/30/2003WO2003044951A1 Method and device for installing broadcasting channels
05/29/2003US20030100283 Frequency acquisition and locking detection circuit for phase lock loop
05/28/2003CN1421074A Channel encoding and decoding method and apparatus
05/27/2003US6571088 Automatic frequency control circuit
05/27/2003US6570937 Frequency scanning FSK receiver
05/27/2003US6570412 Filter characteristic regulating apparatus and regulating method therefor
05/22/2003WO2003043194A2 Frequency acquisition and locking detection circuit for phase lock loop
05/22/2003WO2003043180A1 Multiple analog and digital downconversion
05/22/2003CA2466351A1 Multiple analog and digital downconversion
05/21/2003CN1109439C Circuit for the acquisition of a carrier signal by applying a substitute pilot to a synchronous demodulator
05/20/2003US6567488 Relating to demodulator alignment correction in tuners
05/20/2003US6567479 System and method for extracting and compensating for reference frequency error in a communications system
05/15/2003US20030092417 Method and apparatus for matching receiver carrier frequency
05/14/2003CN1108709C Radio pager
05/08/2003US20030087617 Radio frequency control for communication systems
05/06/2003US6560298 Method and apparatus for concurrent synchronization and improved automatic frequency control in a communication device
05/06/2003US6559731 VCXO temperature compensation circuit
05/01/2003WO2003036322A2 Method for open loop tracking gps signals
04/2003
04/30/2003CN1415156A Offset correction in spread spectrum communication system
04/30/2003CN1107378C Method and system for determining integrity of received signal
04/24/2003US20030078021 Method and apparatus for compensating for frequency offsets caused by a free-running oscillator
04/23/2003EP1304799A1 Method and apparatus for compensating for frequency offsets caused by a free-running oscillator
04/17/2003WO2003032516A1 Satellite positioning system receiver with reference oscillator circuit and methods therefor
04/15/2003US6549589 Digital audio broadcasting receiver
04/10/2003US20030068977 Satellite positioning system receiver with reference oscillator circuit and methods therefor
04/09/2003EP1300962A1 Automatic frequency control device and automatic frequency control method
04/09/2003CN1105420C Digital processing phase lock loop for synchronous digital micro-wave apparatus
04/09/2003CN1105417C Tuning system for achieving quick acquisition times for digital satellite receiver
04/02/2003EP0962046B1 System and method for harmonic interference avoidance in carrier recovery for digital demodulation
04/01/2003US6542821 GPS receiver and method for processing GPS signals
03/2003
03/26/2003CN1406421A A modulation scheme for FDD/TDD transceivers
03/25/2003CA2248072C An apparatus, method and article of manufacture for carrier frequency compensation in an fm radio
03/19/2003CN1404335A Frequency correction method of mobile telephone terminal
03/13/2003US20030050024 Broadcast receiver and channel scanning method
03/12/2003EP1290463A2 Method and apparatus for compensating local oscillator frequency error
03/06/2003US20030045259 Frequency correcting method for cellular phone terminal
03/05/2003EP1289145A2 Frequency correcting method for cellular phone terminal
03/04/2003US6529718 Receiver with a search circuit
02/2003
02/27/2003WO2003017494A1 Method and device for frequency synchronisation
02/26/2003CN1399817A Multi-mode communications system with efficient oscillator synchronization
02/20/2003US20030034831 Active filter circuit
02/18/2003US6522871 Method and apparatus for compensating local oscillator frequency error through environmental control
02/13/2003WO2002069493A3 Automatic frequency control systems and methods for joint demodulation
02/12/2003EP1282941A2 Method and apparatus for compensating local oscillator frequency error through environmental control
02/11/2003US6519300 System and method for automatic frequency correction in a pilot symbol assisted demodulator
02/06/2003US20030026362 Automatic frequency control system adapted to compensate for an insufficient capture range
01/2003
01/29/2003WO2002099988A1 Automatic frequency control device and automatic frequency control method
01/29/2003EP1280275A1 Automatic tuning apparatus
01/29/2003EP1279227A1 Scanning rf receiver
01/29/2003EP1279222A1 Voltage controlled crystal oscillator temperature compensating circuit
01/29/2003CN1394405A Receiver apparatus and method for controlling reference frequency in receiver apparatus
01/29/2003CN1100386C Apparatus and method for carrier frequency compensation in FM radio
01/29/2003CA2417853A1 Automatic frequency control device and automatic frequency control method
01/22/2003CN1392746A 自动频率控制电路 Automatic frequency control circuit
01/16/2003US20030013424 Variable delay channel scan
01/16/2003US20030013423 Receiver apparatus and method for controlling reference frequency in the receiver apparatus
01/15/2003CN1099167C Tuning system for digital satellite receiver with fine tuning provisions
01/09/2003US20030007572 Channel selection apparatus
01/09/2003US20030006880 Device and method for contactless transmission of power or data
01/07/2003US6504498 Method and apparatus for offset cancellation in a wireless receiver
01/03/2003WO2003001692A2 Low leakage local oscillator system
01/02/2003EP1271792A1 Low leakage local oscillator system
01/02/2003EP1271780A2 Method and device for the identification of transmitters that broadcast the same program contents
01/02/2003EP1271763A2 High frequency apparatus
01/02/2003EP1269216A2 Enhanced gps receiver utilizing wireless infrastructure
01/01/2003CN1097877C Tuner for digital satellite receiver
12/2002
12/31/2002US6501806 Estimation of introduced frequency offset by a signal correction and transmission medium
12/26/2002US20020196881 Receiver and method for initial synchronization of a receiver with the carrier frequency of a desired channel
12/25/2002CN1097347C Radio equipment
12/24/2002CA2308621C Afc device and method of controlling reception frequency in a dual-mode terminal
12/19/2002US20020190803 AFC circuit
12/18/2002EP0855041B1 A gps receiver and method for processing gps signals
1 ... 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 ... 38