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)
02/1982
02/02/1982US4314208 Frequency adjusting methods and systems
02/02/1982US4314206 Noise chopper for preventing false locks in a coherent carrier recovery system
02/02/1982CA1117648A1 Time-base error correction
01/1982
01/27/1982EP0044493A1 Frequency/phase locked loop and its use as part of a television or colour-television circuit
01/27/1982EP0044374A1 Frequency-synchronisation method of a free-running voltage-controlled oscillator of a phase-locked loop circuit in a radio receiver
01/26/1982US4313219 Receiver for high frequency electromagnetic oscillations having a frequency readjustment
01/20/1982EP0044156A1 Phase-locked loop frequency synthesizer
01/20/1982EP0044155A1 Frequency modulated phase-locked loop signal source
01/20/1982EP0044153A1 Controlled frequency signal source apparatus including a feedback path for the reduction of phase noise
01/13/1982EP0043407A2 Arrangement for the digital measuring of phase difference
01/12/1982US4310805 Phase-locked loop stabilized by a crystal oscillator
01/12/1982US4310804 Input activated frequency synthesizer
01/12/1982US4309909 Crystal stabilized voltage to frequency converter with digital calibration for flowmeters
01/12/1982CA1116298A1 System for controlling the operating parameters of an adjustable output-power magnetron
01/12/1982CA1116252A1 Phase locked loop frequency generator having stored selectable dividing factors
01/06/1982EP0042924A2 Data transfer apparatus
01/05/1982US4309675 Control circuit for providing a synchronized drive signal to an oscillating system
01/05/1982US4309673 Delay lock loop modulator and demodulator
01/05/1982US4309662 Circuit for rapidly resynchronizing a clock
01/05/1982US4309649 Phase synchronizer
12/1981
12/30/1981EP0042416A1 Apparatus for synchronizing a digital receiver
12/29/1981US4308620 System for maintaining phase coincidence between a carrier wave and sidebands produced by a transmitter
12/29/1981US4308619 Apparatus and methods for synchronizing a digital receiver
12/22/1981US4307401 Two-channel receiver-indicator for phase radio systems
12/22/1981CA1114907A1 Digital clock recovery circuit
12/16/1981EP0041882A1 Frequency presetting device for an indirect frequency synthesizer, and synthesizer comprising such a device
12/16/1981EP0041561A1 Crystal-oscillator-stabilized phase-locked-loop-circuit
12/15/1981CA1114462A1 Signal detector including sample and hold circuit with reduced offset error
12/08/1981US4305151 Digital discriminator for determining frequency error of an oscillator
12/08/1981US4305045 Phase locked loop clock synchronizing circuit with programmable controller
12/01/1981US4303893 Frequency synthesizer incorporating digital frequency translator
11/1981
11/24/1981US4302732 Harmonic phase locked loop with undesired DC component suppression
11/24/1981US4302728 Ultrasonic wave oscillator circuit with output meter
11/17/1981US4301423 Circuit for controlling the frequency of a pulse generator associated with a microprocessor
11/17/1981US4301422 Frequency synthesizer
11/17/1981CA1112767A1 Digital frequency synthesizer
11/12/1981WO1981003250A1 Arrangement for angle modulating a phase-locked loop frequency synthesizer
11/10/1981CA1112304A1 Circuits for producing an output waveform synchronized with the timing of a given waveform
11/03/1981CA1111952A1 Radar altimeter simulator
10/1981
10/28/1981EP0038520A1 Frequency stabilisation method for a high-frequency freely oscillating oscillator
10/27/1981US4297650 Phase locked loop carrier recovery circuit with false lock prevention
10/27/1981US4297649 Malfunction detector for a group of cyclically interconnected phase-locked oscillators
10/27/1981US4297648 Microwave frequency division by phase locked loops
10/20/1981CA1111114A1 Microwave frequency division by phase locked loops
10/13/1981US4295098 Digitally adjustable phase shifting circuit
10/13/1981CA1110715A1 Digital phase comparison apparatus
10/06/1981CA1110332A1 Phase-controlled oscillator circuit
09/1981
09/29/1981US4292594 Method and apparatus for carrier regeneration and synchronous amplitude demodulation
09/29/1981CA1109958A1 Color television receiver
09/15/1981US4290030 Atomic frequency standard using free induction technique
09/15/1981US4290029 Digital phase control circuit including an auxiliary circuit
09/15/1981US4290028 High speed phase locked loop frequency synthesizer
09/08/1981US4288874 Timing data reproduction system
09/03/1981WO1981002497A1 Synchronized frequency synthesizer with high speed lock
09/01/1981US4287480 Phase locked loop out-of-lock detector
08/1981
08/25/1981CA1107858A1 System for recording and reading back data on a recording media
08/20/1981WO1981002372A1 Improved divider with dual modulus prescaler
08/20/1981WO1981002371A1 An improved frequency synthesizer using multiple dual modulus prescalers
08/11/1981US4283739 Color television receivers
08/11/1981CA1106925A2 Frequency synthesizer for transmitter/receiver
08/04/1981US4282585 Site occupancy detector
08/04/1981US4282497 Frequency modulator having linearized operation
08/04/1981US4282493 Redundant clock signal generating circuitry
08/04/1981CA1106457A1 Phase-locked loop
07/1981
07/28/1981CA1106087A1 Frequency synthesizer for transmitter/receiver
07/21/1981US4280104 Phase locked loop system with improved acquisition
07/14/1981US4278947 Precision frequency source using integrated circuit elements
07/14/1981US4278903 Phase comparison circuit
07/09/1981WO1981001928A1 Apparatus for synchronizing a digital receiver
07/07/1981US4277758 Ultrasonic wave generating apparatus with voltage-controlled filter
07/07/1981CA1104663A1 Digital frequency-lock circuit
06/1981
06/25/1981WO1981001782A1 Crystal-oscillator-stabilized phase-locked-loop-circuit
06/23/1981US4275363 Method of and apparatus for driving an ultrasonic transducer including a phase locked loop and a sweep circuit
06/23/1981CA1103799A1 Write clock signal generator for use with rotating magnetic memory systems
06/16/1981US4274067 Universal clock recovery network for QPSK modems
06/16/1981US4273958 Quadrature receiver
06/09/1981US4272730 Microwave frequency synthesizer utilizing a combination of a phase locked loop and frequency translation techniques
06/09/1981US4272729 Automatic pretuning of a voltage controlled oscillator in a frequency synthesizer using successive approximation
06/02/1981US4271531 Frequency synthesizer
06/02/1981US4271530 Receiver having a frequency synthesizing circuit
05/1981
05/26/1981US4270183 Data dejittering apparatus
05/26/1981US4270093 Apparatus for forcing a phase-lock oscillator to a predetermined frequency when unlocked
05/20/1981EP0028734A1 Device for adjusting an equalizer in a data signal-transmission equipment
05/19/1981US4268857 Beam index color television receiver apparatus
05/19/1981CA1101512A1 Device for providing phase synchronism of a transit station in a digital telecommunication network
05/19/1981CA1101501A1 Signal level detecting circuit
05/12/1981US4267602 Acquisition delay circuit for a PLL reference oscillator
05/12/1981CA1101079A1 Phase locked loop
04/1981
04/28/1981US4264875 System for optical injection phase locking and switching of microwave oscillators
04/28/1981US4264863 Pulse swallow type programmable frequency dividing circuit
04/22/1981EP0027289A1 Digital signal transmission system
04/21/1981US4263614 Phase tracking loop circuit
04/21/1981US4263558 Phase-selective amplifier
04/21/1981CA1099787A1 Frequency measuring system
04/14/1981US4262264 Apparatus and method for achieving acquisition and maintaining lock in a phase locked loop
04/08/1981EP0026639A2 Clock recovery network
03/1981
03/31/1981US4259744 Signal generator
03/31/1981US4259740 Sequential detection system
03/31/1981US4259644 Local oscillator for multi-band reception having single crystal reference oscillator
03/31/1981CA1098324A1 No translation available
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