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)
11/1991
11/06/1991EP0455038A2 Advance/retard control circuit with PDM accumulator and second order loopfilter
11/06/1991EP0454955A1 Sampling clock generating circuit
11/06/1991EP0454917A1 Frequency synthesiser
11/06/1991CN1056033A Synchronized horizontal scanningat horizontal frequency multiples
11/05/1991US5063579 Scaler for synchronous digital clock
11/05/1991US5063577 High-speed bit synchronizer
11/05/1991US5063357 Stable, reliable oscillator system using automatic oscillator substitution
10/1991
10/31/1991WO1991017605A1 Fractional n/m synthesis
10/31/1991WO1991017604A1 Multiaccumulator sigma-delta fractional-n synthesis
10/31/1991WO1991016766A1 Clock recovery circuit without jitter peaking
10/31/1991WO1991016696A1 High speed reflected impedance telemetry system for implantable device
10/31/1991DE4013694A1 Phasenregelschaltung Phase control circuit
10/29/1991WO1991017603A1 Phase control circuit
10/29/1991US5062122 Delay-locked loop circuit in spread spectrum receiver
10/29/1991US5061907 High frequency CMOS VCO with gain constant and duty cycle compensation
10/29/1991US5061904 Phase locked loop having sampling gate phase detector
10/29/1991CA1291542C Phase locked oscillator
10/29/1991CA1291541C Active delay line circuit
10/29/1991CA1291539C Quotient phase-shift processor for digital phase-locked-loops
10/27/1991WO1991016759A1 Fractional-division synthesizer for a voice/data communications system
10/23/1991EP0453280A1 PLL frequency synthesizer
10/23/1991EP0453253A2 Timing signal generator for signal processing system
10/23/1991EP0452452A1 Loop filter for a frequency synthesizer.
10/22/1991US5059979 Digital control circuit for tuning systems with a pulse density modulation digital to analog converter
10/22/1991US5059926 Frequency synchronization apparatus
10/22/1991US5059925 Method and apparatus for transparently switching clock sources
10/22/1991US5059924 Clock adapter using a phase locked loop configured as a frequency multiplier with a non-integer feedback divider
10/22/1991US5059838 Signal delay circuit using charge pump circuit
10/22/1991US5059833 Phase detector suitable for use in phase lock loop
10/22/1991CA1291226C Microwave diode oscillator
10/22/1991CA1291223C Voltage controlled oscillator
10/16/1991EP0452031A2 Signal generation using digital-to-analogue conversion
10/15/1991US5057794 Phase-locked loop with pattern controlled bandwidth circuit
10/15/1991US5057793 Frequency synthesizer PLL having digital and analog phase detectors
10/15/1991US5057771 Phase-locked timebase for electro-optic sampling
10/15/1991US5057705 Clock formation circuit with phase locked loop control
10/15/1991CA1290824C Clock circuit synchronization in digital transmission system
10/10/1991DE4109046A1 Digital PLL circuit with phase detector - has pulse distributor coupled to pulse generator from which two pulse groups can be tapped
10/08/1991US5056115 Device for the division, at an optimum sampling rate, of a passband signal into its components on two carriers in quadrature
10/08/1991US5056054 Digital phase locked loop utilizing a multi-bit phase error input for control of a stepped clock generator
10/08/1991US5055803 Parameter tolerant PLL synthesizer
10/08/1991US5055802 Multiaccumulator sigma-delta fractional-n synthesis
10/08/1991US5055801 Digital phase locked loop for correcting a phase of an output signal with respect to an input signal
10/08/1991US5055800 Fractional n/m synthesis
10/08/1991CA1290407C Frequency synthesizer
10/02/1991EP0449659A1 Linearized three state phase detector
10/02/1991EP0449319A2 Circuit for reducing microphony
10/02/1991EP0449198A2 Synchronized horizontal scanning at horizontal frequency multiples
10/02/1991CN1055094A Method and apparatus for calibrated electronic timing circuit
10/01/1991US5053728 Phase locked loop frequency modulator using data modulated digital synthesizer as reference
10/01/1991US5053726 Circuit for preventing VCXO mode jumping
10/01/1991US5053724 High precision PLL with circuit for preventing erroneous capture
10/01/1991US5053723 Phase-locked loop with pulse-duration modulation fine frequency control
10/01/1991US5053722 Fault-tolerant, wideband radar microwave signal generator
10/01/1991US5053649 Method and apparatus for high speed phase detection
09/1991
09/30/1991WO1991015056A1 Direct digital synthesizer driven phase lock loop frequency synthesizer with hard limiter
09/30/1991CA2039363A1 Method and a circuit for reducing microphony
09/25/1991EP0448048A2 A signal detecting circuit for detecting a signal specified in a designated frequency
09/25/1991EP0447731A1 A synchronization circuit for a synchronous switching system
09/24/1991US5052032 Clock formation circuit
09/24/1991US5052031 Phase locked loop including non-integer multiple frequency reference signal
09/24/1991US5052030 Method for synchronizing a clock, generated with the assistance of a counter, to a reference clock
09/24/1991US5052022 Repeater and PLL circuit
09/24/1991US5051702 Automatic phase controlling circuit
09/24/1991CA1289633C Pll frequency synthesizer
09/24/1991CA1289632C Clock-signal regenerator comprising a crystal oscillator incorporated in a phase-locked loop
09/18/1991EP0446571A2 Single loop PLL circuit
09/17/1991US5050195 Narrow range digital clock circuit
09/17/1991US5049838 Minimum intrusion search oscillator for use in feedback loops
09/17/1991CA1289251C Digital first order hold circuit
09/11/1991EP0445806A2 Frame synchronization dependent type bit synchronization extraction circuit
09/11/1991EP0445574A2 Digital clock buffer circuit providing controllable delay
09/11/1991EP0445522A2 Satellite transmission capturing method for GPS receiver
09/10/1991US5047735 RZ clock recovery circuit with positive-feedback
09/10/1991US5047733 PLL synthesizer providing rapid frequency changeover
09/10/1991CA1288839C Digital phase locked loop clock recovery scheme
09/06/1991CA2037593A1 Digital clock buffer circuit providing controllable delay
09/04/1991EP0444650A2 Phase-locked loop type frequency synthesizer having improved loop response
09/04/1991EP0444363A2 Current-pulse integrating
09/04/1991EP0444237A1 Turning method for a radio transmitter and/or receiver apparatus
09/04/1991CN2084200U Multipurpose wide frequency band phase shift trace power supply
09/03/1991US5046124 Frequency modulated radio frequency broadcast network employing a synchronous frequency modulated booster system
09/03/1991US5045818 PLL frequency modulator having bias voltage applied to filter capacitor
09/03/1991US5045813 Slip phase control PLL
09/03/1991US5045812 PLL circuit for producing a clock signal
09/03/1991US5045811 Tuned ring oscillator
09/03/1991CA1288486C Implementation and control of filters
08/1991
08/28/1991EP0443221A1 Method and apparatus for a calibrated electronic timing circuit
08/28/1991CN2083808U Outer clock and program control signal sources
08/28/1991CN1013724B Clock signal generation system
08/27/1991US5043678 Phase lock loop
08/27/1991US5043677 Time reference signal generation system
08/21/1991EP0442461A2 Voltage-controlled oscillator circuit
08/21/1991EP0442341A2 GPS receiver
08/21/1991CN1013628B Frequency synthesizer with interface controller and buffering memory
08/21/1991CN1013627B N-pi phase/frequency detector
08/20/1991US5041798 Time reference with proportional steering
08/17/1991WO1991012678A1 Process and device for beat recovery
08/14/1991EP0441684A1 Phase lock circuit and resulting frequency multiplier
08/14/1991EP0441155A1 Method and apparatus for converting sampling frequencies
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