Patents
Sitemap › H03 - Basic electronic circuitry › H03L - Automatic control, starting, synchronisation, or stabilisation of generators of electronic oscillations or pulses › H03L 7 - Automatic control of frequency or phase; Synchronisation
Patents for H03L 7 - Automatic control of frequency or phase; Synchronisation (37,643)
03/1981
03/24/1981US4258333 Frequency synthesizer having a loop filter with a high cut-off frequency
03/17/1981US4256983 Voltage-to-frequency converter having a constant frequency mode of operation
03/11/1981EP0024878A1 Phase-locked loop circuit
03/10/1981US4255759 Color television receiver AFPC circuit
03/10/1981CA1097411A1 Frequency synthesizer
03/10/1981CA1097407A1 Dual modulus programmable counter
03/03/1981US4254482 Echo location system which provides for measuring liquid level and flow rate and flow volume of flowing liquids
02/1981
02/24/1981US4253180 Voltage controlled oscillator for a transmission line communications system receiver
02/24/1981CA1096519A1 Phase locked loop tuning system with a preset channel memory
02/24/1981CA1096488A1 Tint control circuit
02/24/1981CA1096447A1 Radio receiver
02/17/1981US4251779 Frequency synthesizer apparatus and method in ultrasonic imaging
02/17/1981CA1095999A1 Phase locked loop circuit
02/10/1981US4250525 Television horizontal AFPC with phase detector driven at twice the horizontal frequency
02/10/1981US4250454 Electronic trigger for a radio frequency source
02/03/1981US4249199 Phase compensated controlled oscillator
02/03/1981US4249138 Citizens band transceiver frequency synthesizer with single offset and reference oscillator
02/03/1981CA1095194A1 Phase locked loop television tuning system
02/03/1981CA1095130A1 Solid state power combiner for transmitter
01/1981
01/27/1981US4247867 Apparatus for processing the output voltage of a detection circuit
01/27/1981US4247834 Control circuit for establishing voltage-controlled or injection-locked operation of a synthesizer reference oscillator
01/20/1981US4246547 Phase locked loop frequency generator having stored selectable dividing factors
01/20/1981US4246546 Apparatus and method for locking a PLL onto a selected offset frequency sideband
01/20/1981US4246545 Data signal responsive phase locked loop using averaging and initializing techniques
01/20/1981CA1094177A1 Phase locked loop circuit
01/13/1981US4245350 Automatic gain control system for direct-access television receiver
01/07/1981EP0020868A1 Voltage controlled oscillator
01/06/1981US4244043 Frequency division system
01/06/1981US4243953 Voltage controlled oscillator presenting high impedance to parallel resonant tank circuit
01/06/1981US4243949 Frequency stabilization technique for microstrip oscillators
01/06/1981US4243941 Digital signal receiver having a dual bandwidth tracking loop
12/1980
12/30/1980US4242639 Digital phase lock circuit
12/30/1980US4242602 Phase comparator circuit with gated isolation circuit
12/30/1980CA1092679A1 Variable increment phase locked loop circuit
12/23/1980US4241452 Automatic frequency control system
12/23/1980US4241435 Electronic timepiece oscillator circuit
12/23/1980US4241308 Digital numerically controlled oscillator
12/16/1980US4240076 Starting circuit for automatic frequency control arrangement
12/16/1980US4240034 Digital frequency synthesizer
12/09/1980US4238740 Phase-locked loop for PCM transmission systems
12/09/1980US4238739 Preset network for a phase lock loop
12/09/1980CA1091310A1 Pll synthesizer
12/09/1980CA1091299A1 Phase locked loop exciter generator for high frequency transmitter
11/1980
11/26/1980EP0019412A1 A method of synthesizing an output frequency and circuit arrangement therefor
11/26/1980EP0019220A1 Lock detector for phase locked loops
11/18/1980US4234929 Control device for a phase lock loop vernier frequency synthesizer
11/13/1980WO1980002487A1 Voltage-to-frequency-converter
11/04/1980US4232393 Muting arrangement of a radio receiver with a phase-locked loop frequency synthesizer
10/1980
10/28/1980US4231071 Reader for data recorded on magnetic disks at plural densities
10/28/1980CA1088636A1 Fast master-oscillator lock-up
10/21/1980US4229825 Synchronizing circuit for a digital arrangement
10/21/1980US4229759 Signal detector including sample and hold circuit with reduced offset error
10/21/1980US4229741 Two-way communications system and method of synchronizing
10/21/1980US4228713 Programmable current source for filter or oscillator
10/15/1980EP0017130A1 Receiver for high-frequency, electromagnetic waves with frequency adjustment
10/14/1980US4228540 Radio receiver
10/07/1980US4227186 Self-stabilizing analog to digital converter useful in phase locked loop tuning systems
10/07/1980US4227158 Multifrequency control from a single crystal
10/07/1980US4227154 Frequency generator with a controlled limit on frequency deviation from a synchronizing frequency
09/1980
09/30/1980US4225830 Plural phase locked loop frequency synthesizer
09/30/1980US4225829 Local oscillator circuit having two phase locked loops having respective frequency dividers with a common division ratio
09/30/1980US4225828 PLL Synthesizer
09/30/1980CA1086854A1 Apparatus for processing the output voltage of a detection circuit
09/30/1980CA1086838A1 Frequency stabilized microwave signal source
09/23/1980US4224575 Phase/frequency controlled phase shift keyed signal carrier reconstruction circuit
09/16/1980US4223406 Multi band radio receiver system with phase locked loop
09/16/1980US4223404 Apparatus for recycling complete cycles of a stored periodic signal
09/16/1980US4223354 Phase corrected raster scanned light modulator and a variable frequency oscillator for effecting phase correction
09/09/1980US4222121 Frequency synthesizer type receiver having a channel selection device
09/09/1980US4222013 Phase locked loop for deriving clock signal from aperiodic data signal
09/09/1980US4222009 Phase lock loop preconditioning circuit
09/03/1980EP0015014A1 Device for the rapid synchronisation of a clock
09/02/1980US4220974 AFT circuit
09/02/1980CA1085003A1 Carrier synchronization system for coherent phase demodulators
08/1980
08/26/1980US4219783 Phase locked loop with rapid phase pull in
08/19/1980US4218657 Hangup corrector useful in locked loop tuning system
08/19/1980CA1084126A1 High-speed tone decoder utilizing a phase-locked loop
08/12/1980US4217552 Receiver
08/07/1980WO1980001630A1 Phase-locked loop for pcm transmission systems
08/06/1980EP0013884A1 Phase-locked oscillator circuit and system for generating a clock signal using this circuit
08/05/1980US4216544 Digital clock recovery circuit
08/05/1980CA1083235A1 Digital phase lock loop circuit
07/1980
07/29/1980US4215430 Fast synchronization circuit for phase locked looped decoder
07/29/1980US4215427 Carrier tracking apparatus and method for a logging-while-drilling system
07/29/1980US4215425 Apparatus and method for filtering signals in a logging-while-drilling system
07/22/1980US4214279 Clocking system for servo signal having two or more harmonically related frequencies
07/22/1980CA1082364A1 Arrangement for automatically controlling the frequency of a hyperfrequency generator feeding a resonant element subjected to fluctuations in temperature
07/22/1980CA1082318A1 Wide acquisition range msk demodulator input circuit
07/15/1980US4213096 Phaselock receiver with phaselock detector
07/15/1980CA1081873A1 Dual mode frequency synthesizer for a television tuning apparatus
07/15/1980CA1081788A1 Signal transition detector
07/09/1980EP0012899A1 Digital phase control circuit with auxiliary circuit
07/08/1980US4211975 Local signal generation arrangement
07/08/1980CA1081359A1 Phase synchronizing arrangement for video synchronous detection
07/01/1980US4210828 Device for improving output waveform of manually controllable pulse generator for use in preset electronic tuning control device
07/01/1980US4210776 Linear digital phase lock loop
07/01/1980CA1080816A1 Automatic phase and frequency control system
06/1980
06/25/1980EP0012656A1 Automatic tuning apparatus for a resonator and its application within a synthesizer
06/24/1980CA1080310A1 Data communications system with improved digital phase-locked loop retiming circuit
06/17/1980US4208741 AFC System for a synthesizer tuning system
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