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)
10/1990
10/03/1990EP0389894A1 Automatic frequency control circuit
10/02/1990US4961058 For a signal generating source having an output
10/02/1990CA1274883A1 Clock recovering device
09/1990
09/27/1990DE3909200A1 Method and device for conditioning the clock signal for a clock-controlled circuit arrangement
09/26/1990EP0388890A2 Reactance control circuit with a DC amplifier for minimizing a variation of a reference reactance value
09/25/1990US4959656 Efficient detection and signal parameter estimation with application to high dynamic GPS receiver
09/25/1990US4959618 Differential charge pump for a phase locked loop
09/25/1990US4959617 Dual state phase detector having frequency steering capability
09/25/1990CA1274587A1 Digital phase-frequency discriminator comprising simplified reset means and associated method
09/23/1990CA2012654A1 Method and apparatus for converting a gap-infested read-in clock into a gap-free-read-out clock
09/20/1990WO1990010978A1 Frequency synthesizer with control of start-up battery saving operations
09/20/1990WO1990010976A1 Bit synchronizer
09/19/1990EP0388313A2 Coherent direct digital synthesizer
09/19/1990EP0387294A1 Crystal controlled magnetron
09/19/1990CN1045496A Heterodyne stage having precise closed-loop control of amplitude of injection signal thereof
09/18/1990US4958360 Circuit for recovering the carrier in digital transmission systems
09/18/1990US4958243 Phase discrimination and data separation method and apparatus
09/18/1990US4958228 Automatic frequency change device
09/18/1990US4958120 Dual feedback tuning method and apparatus
09/14/1990CA2046294A1 Frequency synthesizer with control of start-up battery saving operations
09/12/1990EP0386139A1 Digital phase locked loop with bounded jitter
09/12/1990CN1009610B Home unit for wireless digital telephone system
09/11/1990US4956699 Signal synchronizing system
09/06/1990DE4006464A1 Frequenzgenerator Frequency generator
09/05/1990EP0385567A2 Clock signal generator for a data processing system
09/05/1990EP0385134A2 Method for the resynchronisation of a clock signal
09/05/1990CN1009521B Clock-signal regenerator comprising crystal oscillator incorporated in phase-locked loop
09/04/1990US4954824 Sample rate conversion system having interpolation function with phase locked clock
09/04/1990US4954788 Phase locked loop with bandwidth ramp
08/1990
08/29/1990EP0383761A1 Method and apparatus for processing synthetic aperture aerial signals
08/29/1990CN1009409B Circuitary arrangement for generating beat signal synchronizing with reference frequency
08/28/1990US4953116 Digital word output high-pass filter apparatus
08/28/1990US4952889 Loop filter modulated synthesizer
08/28/1990US4952888 Phase locked loop for direct modulation
08/28/1990US4952887 Phase-lock loop circuit having outputs in quadrature
08/28/1990US4952883 Phase detector circuit for periodic signal using three sampling data
08/28/1990CA1273413A1 Phase-regulating circuits
08/22/1990EP0383194A1 Dual port voltage controlled emitter coupled multivibrator
08/22/1990EP0111535B1 Method of recovering timing signals
08/21/1990US4951005 Phase locked loop with reduced frequency/phase lock time
08/21/1990US4951004 Coherent direct digital synthesizer
08/14/1990US4949052 Clock signal generator having back-up oscillator substitution
08/14/1990US4949051 Phase lock clock recovery with aided frequency aquisition
08/09/1990WO1990009061A1 Heterodyne stage having precise closed-loop control of the amplitude of the injection signal thereof
08/08/1990EP0380979A2 Phased locked loop to provide precise frequency and phase tracking of two signals
08/08/1990EP0380946A2 Method for the control of the regulation ability of a phase-locked loop circuit
08/08/1990CN2060240U Super picoampire direct-current signal generator
08/07/1990US4947407 Sample-and-hold digital phase-locked loop for ask signals
08/07/1990US4947137 Passive frequency standard
08/01/1990EP0379955A1 ECL circuitry and its use in connection with a voltage controlled oscillator
07/1990
07/31/1990CA1272317A1 Subscriber unit for wireless digital telephone system
07/26/1990DE3912814C1 Radio call system - compares ref. signal with unmodulated output to obtain oscillator control voltage
07/25/1990EP0379293A2 Control of power inverter
07/25/1990EP0379169A2 Signal delay circuit using charge pump circuit
07/25/1990EP0379113A1 Carrier recovery device insensitive to false lockings
07/25/1990EP0378982A1 Method and apparatus for automatic phase adjustment in a phase locked loop
07/24/1990US4943983 Subscriber unit for wireless digital telephone system
07/24/1990US4943981 Dividing mechanisms for frequency synthesizers
07/24/1990US4943955 Atomic clock
07/24/1990US4943857 Synchronizing circuit for an external signal and an internal sampling clock signal
07/24/1990US4943788 Broad band VCO control system for clock recovery
07/24/1990US4943787 Digital time base generator with adjustable delay between two outputs
07/24/1990US4943786 Digital control of phase locked loops
07/18/1990EP0378231A2 Frequency synthesizer
07/18/1990EP0378190A2 Digital phase locked loop
07/18/1990EP0377978A2 A PLL control apparatus
07/17/1990US4942371 Phase-locked loop having improved input jitter characteristics
07/17/1990US4942370 PLL circuit with band width varying in accordance with the frequency of an input signal
07/10/1990US4941156 Linear jitter attenuator
07/10/1990US4940952 Phase and frequency comparator circuit for phase locked loop
07/10/1990US4940951 Phase lock recovery apparatus for phase locked loop circuit
07/10/1990US4940950 Frequency synthesis method and apparatus using approximation to provide closely spaced discrete frequencies over a wide range with rapid acquisition
07/10/1990CA1271535A1 Pulse frequency stabilizer device
07/05/1990DE3843633A1 Method for controlling two independent oscillators
07/04/1990EP0376847A2 PLL synthesizer
07/04/1990EP0376718A1 A semiconductor device
07/04/1990EP0375893A2 Circuit arrangement for enhancing the frequency precision of a reference oscillator used in radio engineering
07/04/1990EP0375717A1 A controlled oscillator
07/04/1990CN1008677B Direct hybrid synchrodyne receiver
07/03/1990US4939751 Phase signal filtering apparatus utilizing estimated phase signal
07/03/1990CA1271232A1 Intelligent phase-locked loop
06/1990
06/28/1990WO1990007233A1 Digital automatic frequency control on pure sine waves
06/28/1990DE3942431A1 Frequency and phase detector for NRZ system - has true and inverse clock compared to NRZ data and output differences to setting phase-frequency
06/28/1990DE3843262A1 Method and circuit arrangement for controlling the phase angle of a clock signal
06/27/1990EP0375665A2 A pulse delay circuit
06/27/1990EP0374235A1 Phase-control circuit.
06/26/1990US4937846 Frequency counter-locked-loop apparatus for controlling digitally programmable oscillators
06/26/1990US4937538 Circuit arrangement for synchronizing an oscillator
06/26/1990US4937537 Circuit arrangement for compensating for the thermal drift of a phase detector
06/26/1990US4937536 Fast settling phase lock loop
06/20/1990EP0373750A2 Phase-offset signal generator
06/20/1990EP0373686A1 Regenerating device having a phase-locked loop with loop gain compensation and offset compensation
06/20/1990EP0373517A2 Digital automatic frequency control on pure sine waves
06/20/1990CN1043224A Microcomputer control frequency quickly varying magnetron and technique
06/20/1990CN1008500B Circuit for restricting transient tremble in exchange duration
06/20/1990CN1008499B Method of and apparatus for reducing cycle slippage errors in radio-frequency signal reception
06/19/1990US4935941 Multiple frequency data recovery system
06/19/1990US4935707 Current reduction of a synthesizer
06/19/1990US4935706 Tuning apparatus for high speed phase locked loops
06/19/1990CA1270552A1 Clock control circuit for phase control
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