Patents
Patents for H03J 7 - Automatic frequency control; Automatic scanning over a band of frequencies (3,745)
02/2000
02/08/2000US6023613 Synthesizer receiver for automatically tuning master stations and associated satellite stations in specified geographical areas
02/01/2000US6020911 Filtering device for treating a plurality of channels in a television signal cable distribution system
01/2000
01/25/2000US6018648 Process and device for displaying a transmitter name and a type of program transmitted in a digital data telegram on a radio receiver display
01/25/2000US6018514 Apparatus and method for protecting a communication device operating in an undesirable environment
01/20/2000WO2000003482A1 Frequency adjustment
01/20/2000DE19927266A1 Receiver for digital audio broadcast signals, controls tuning unit to receive signal as long as frequency is tuned in and error rate is below threshold
01/20/2000DE19830608A1 Car radio receiver with background tuner for determining station with best reception quality
01/19/2000EP0972353A1 Tuning method and transceiver unit
01/18/2000US6016119 Method and apparatus for determining the location of an object which may have an obstructed view of the sky
01/18/2000CA2054237C Digital radio frequency compensation
01/11/2000CA2234855C Highly stable frequency synthesizer loop with feedforward
01/06/2000WO2000001103A1 Apparatus and method for protecting a communication device operating in an undesirable environment
01/06/2000WO1999049581A3 Am quality detector
01/05/2000EP0969636A1 Tracking carrier timing utilising frequency offset error signal
01/04/2000US6011818 Automatic frequency control method
12/1999
12/29/1999WO1999049662A3 Automatic installation
12/23/1999WO1999049575A3 Sign-cross product automatic frequency control loop
12/22/1999CN1239622A AFC circuit, carrier reproducing circuit, and receiver
12/22/1999CN1239367A Radio signal receiving apparatus and method of radio signal reception
12/21/1999US6006078 Receiver with improved lock-up time and high tuning stability
12/15/1999EP0964514A1 Radio receiver using location-determining information
12/14/1999US6002363 Combined GPS positioning system and communications system utilizing shared circuitry
12/11/1999CA2270321A1 Radio receiver with location control programming
12/08/1999EP0962046A2 System and method for harmonic interference avoidance in carrier recovery for digital demodulation
12/08/1999CN1238086A Method of measuring frequency difference, and receiver
12/08/1999CN1238074A Temperature compensation circuit for crystal oscillator
12/07/1999US5999793 Satellite receiver tuner chip with frequency synthesizer having an externally configurable charge pump
12/01/1999EP0961430A2 Receiver for receiving Digital Audio Broadcast (DAB) programmes, comprising automatic selection of broadcast programmes from a plurality of multiplexed programmes
12/01/1999EP0960472A2 Method and system for controlling frequency
11/1999
11/30/1999US5995563 System and method for fast channel switching in a satellite receiver
11/24/1999EP0959568A1 Receiver with frequency offset correcting function
11/24/1999EP0958657A1 A communication system, a communication device and a frequency synthesizer
11/24/1999CN1236506A Digital communication device
11/23/1999US5991612 Amplitude correction circuit
11/23/1999US5991603 Narrow-band communication apparatus
11/17/1999EP0956644A1 Automatic frequency control circuit
11/17/1999CN1235417A Channel selection apparatus
11/10/1999EP0955771A1 Television receiver
11/10/1999EP0954911A2 Assessment of digital signals
11/10/1999CN1234924A Receiver with phase-locked loop
11/09/1999US5982457 Radio receiver detecting digital and analog television radio-frequency signals with single first detector
11/04/1999WO1999056395A1 Method for regulating an oscillator and regulating system
11/04/1999WO1999056145A1 Satellite positioning reference system and method
11/04/1999WO1999056143A1 Distributed satellite position system processing and application network
11/02/1999US5977839 Compensated frequency source with latched temperature compensation, and method for it's control
10/1999
10/28/1999WO1999054998A1 Lnb drift search system for dbs products
10/26/1999US5973570 Band centering frequency multiplier
10/26/1999CA2019339C Channel selecting apparatus
10/20/1999EP0950194A2 An improved gps receiver utilizing a communication link
10/19/1999US5970400 Adjusting the timing and synchronization of a radio's oscillator with a signal from an SATPS satellite
10/13/1999EP0949758A1 Communications system, mobile device and method
10/13/1999EP0949757A2 Method and device for frequency drift compensation at reception of satellite broadcasting signals by a satellite receiver
10/13/1999CN1231564A Tuning assembly for television
10/06/1999EP0948134A2 Radio receiver
10/06/1999CN1230836A Automatic frequency control in FSK receiver
10/05/1999US5963851 Automatic frequency control system using multiple threshold levels and method of using same
09/1999
09/30/1999WO1999049662A2 Automatic installation
09/30/1999WO1999049581A2 Am quality detector
09/30/1999WO1999049575A2 Sign-cross product automatic frequency control loop
09/29/1999EP0946010A2 Receiver for receiving digital broadcast programmes
09/29/1999CN1230089A Mobile telephone apparatus
09/23/1999DE19815953C1 Method of compensating frequency deviations on reception of satellite radio signals using a satellite receiver system
09/22/1999EP0944213A2 Digital broadcast receiver
09/15/1999EP0941487A1 Method and apparatus for determining time for gps receivers
09/14/1999CA2158667C Method and apparatus for communication and signal synthesis
09/10/1999WO1999033217A3 Method for frequency error estimation
09/08/1999EP0940981A2 Channel selection apparatus
09/08/1999EP0940957A1 AFC circuit, carrier reproducing circuit, and receiver
09/08/1999EP0940929A2 Radio and communication method using a transmitted intermediate frequency
09/07/1999US5949830 Small wireless radio
09/01/1999EP0939528A2 Carrier synchronisation for DAB reception
09/01/1999CN1044958C Microprocessor controlled digital AFT unit
08/1999
08/31/1999US5945944 To determine position of a mobile global positioning system receiver
08/31/1999US5945888 Dielectric resonator tunable via a change in gas pressure
08/26/1999WO1999043085A1 Method and apparatus for detecting a frequency synchronization signal
08/26/1999DE19807276A1 Control process for receivers and/or direction finders
08/25/1999EP0938199A2 Means for determining available reception frequencies in a receiver for the reception of digital broadcasts
08/25/1999CN1226780A Controller of funger apparatus and method for controlling power supply to tuner of tuner apparatus
08/19/1999WO1999041842A1 Tuning method and transceiver unit
08/19/1999DE19805391A1 Radio receiver with transmitter search
08/18/1999CN1044758C Data receving method of multi-broadcasting receiver
08/17/1999US5940748 Method and system for determining the integrity of a received signal
08/17/1999US5940747 Apparatus and method of acquiring a carrier signal in a wireless receiver
08/17/1999US5940746 Channel scanning apparatus and method
08/17/1999US5940744 Local frequency correction
08/17/1999CA2125260C Automatic frequency control apparatus and method therefor
08/10/1999US5937339 Frequency-selection device provided with a lock-on detector
08/10/1999CA2127366C Frequency control system
08/04/1999CN1225206A Method and system for tuning resonance modules
08/03/1999US5933200 Method for reducing carrier recovery time in high definition television receiver
08/03/1999US5933059 Method and apparatus for controlling frequency synchronization in a radio telephone
08/03/1999CA2098660C Automatic frequency control circuit
08/03/1999CA2089154C Automatic frequency control by an adaptive filter
07/1999
07/28/1999CN1044424C Sync validity detection utilizing microcomputer
07/21/1999EP0930705A1 Apparatus and method for remote control transmission using a receiver with a tunable filter
07/20/1999US5926752 Apparatus and method for remote convenience message transmission and control with a tunable filter receiver
07/14/1999EP0928514A1 Receiver capable of demodulating multiple digital modulation formats
07/01/1999WO1999033217A2 Method for frequency error estimation
07/01/1999DE19755250A1 Circuit for setting the resonant frequency of the antenna resonant circuit of a base station for contactless data and power transfer
06/1999
06/30/1999CN1221524A Automatic frequency control with adjacent channel interference protection
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