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)
11/1989
11/07/1989US4879674 Input circuit for a digital phase locked loop
11/07/1989US4879530 Monolithically integratable phase shifter VCO
11/07/1989US4879529 Phase control loop with interrupted control
11/07/1989US4879528 Ultrasonic oscillation circuit
11/07/1989US4879527 Phase lock loop and improved phase detector therefor
11/07/1989EP0273031A4 Characterized fast tuning control for a television system.
10/1989
10/31/1989US4878231 N-PI phase/frequency detector
10/25/1989EP0252943A4 Variable capacitance circuit.
10/24/1989US4876702 Programmable time advance
10/24/1989US4876699 High speed sampled data digital phase detector apparatus
10/24/1989US4876519 High frequency ECL voltage controlled ring oscillator
10/24/1989US4876518 Frequency tracking system
10/17/1989US4875108 Phase lock loop
10/12/1989DE3810809A1 Method for phase-locked frequency conversion
10/11/1989EP0336496A1 Circuit arrangement for synchronizing an oscillator
10/11/1989EP0336206A2 A circuit arrangement for compensating for the thermal drift of a phase detector
10/10/1989US4873491 Phase shift circuit utilizing a variable time delay line
10/04/1989EP0335727A2 Signal processing apparatus
10/04/1989EP0335547A2 A metastable prevention circuit
10/04/1989EP0335509A2 Broad band VCO control system for clock recovery
10/04/1989EP0335492A2 Dividing mechanisms for frequency synthesisers
10/04/1989EP0335370A2 Automatic frequency control circuit
10/04/1989EP0334980A1 Filter circuit
10/03/1989US4872155 Clock generator circuit and a synchronizing signal detection method in a sampled format system and a phase comparator circuit suited for generation of the clock
10/03/1989US4871981 Fast hopping microwave frequency synthesizer
10/03/1989US4871979 Variable frequency system having linear combination of charge pump and voltage controlled oscillator
10/03/1989CA1262174A1 Clock regenerator
09/1989
09/27/1989EP0334784A2 Analog macro embedded in a digital gate array
09/27/1989EP0334108A2 Receiver for spread-spectrum signals, especially a GPS-type receiver
09/26/1989US4870684 PLL circuit for generating output signal synchronized with input signal by switching frequency dividing ratio
09/26/1989US4870382 High frequency lock detecting circuit
09/26/1989US4870303 Phase detector
09/26/1989CA1260607A1 Clock signal generation system
09/26/1989CA1260563A1 Frequency synthesizer of a phase-locked type with a sampling circuit
09/21/1989WO1989008947A1 Frequency control system
09/19/1989US4868527 Frequency set-on oscillator
09/19/1989US4868524 RF circuit utilizing a voltage controlled saw oscillator
09/19/1989US4868523 Intermittent phase locked loop frequency synthesizer for frequency hopping radio system
09/19/1989US4868522 Clock signal distribution device
09/19/1989US4868514 Apparatus and method for digital compensation of oscillator drift
09/19/1989US4868513 Phase-locked loop with redundant reference input
09/19/1989US4868445 Self tuned ultrasonic generator system having wide frequency range and high efficiency
09/13/1989EP0332467A2 Circuit for detecting a lock of a phase locked loop
09/13/1989EP0332087A1 Frequency modulator
09/13/1989CN1035595A N-pi phase/frequency detector
09/12/1989US4866402 System to verify phase lock of a phase lock loop
09/12/1989US4866394 Phase synchronizing circuit for a time axis shift correcting circuit
09/06/1989EP0331577A1 Atomic clock
09/06/1989EP0331016A2 Phase detector circuit for periodic signal using three sampling data
09/06/1989EP0330984A2 Split-loop filter
09/06/1989EP0330954A1 Passive frequency standard
09/05/1989US4864640 Directly mixing synchronous receiver
09/05/1989US4864634 Radio communication apparatus free from interference between local signal and transmission signal
09/05/1989US4864401 Synchronization signal generator without oscillator
09/05/1989US4864254 High frequency phase detector using FET bridge
09/05/1989US4864253 Phase locked loop wherein phase comparing and filtering are performed by microprocessor
09/05/1989US4864252 Sample-and-hold phase detector for use in a phase locked loop
09/05/1989CA1259128A1 Deflection synchronizing apparatus
08/1989
08/30/1989EP0330280A1 Voltage controlled oscillator
08/29/1989US4862515 Frequency dividing arrangements
08/29/1989US4862485 Quotient phase-shift processor for digital phase-locked-loops
08/29/1989US4862299 Clock signal regenerator
08/29/1989US4862296 PCM signal reproducing apparatus with adjustable phase lock loop circuitry
08/29/1989US4862110 Oscillator, in particular a surface acoustic wave oscillator, frequency controlled by controlling its temperature
08/29/1989US4862108 Frequency locking circuit with sideband imbalance correction
08/29/1989US4862107 Frequency synthesizer for broadcast telephone system having multiple assignable frequency channels
08/29/1989US4862106 Signal generating apparatus using PLL circuit
08/29/1989US4862105 Frequency synthesizer comprising a tuning indicator
08/29/1989US4862104 Phase synchronization system
08/29/1989US4862015 Constant propagation delay current reference
08/24/1989DE3803965A1 Method and circuit arrangement for synchronising a clock generator
08/23/1989EP0329418A2 Circuit synchronization system
08/22/1989US4860120 Low-frequency converter for carrier chrominance signal
08/22/1989US4859970 Voltage controlled oscillator
08/16/1989EP0328378A2 Dual-tracking phase-locked loop
08/15/1989US4857867 Method and apparatus for locking the frequency and phase of a local oscillator
08/15/1989US4857866 Phase-locked loop having elongated time for charge and discharge
08/09/1989EP0326940A2 A phase locked loop having a fast lock current reduction and clamping circuit
08/09/1989EP0326899A2 Circuit arrangement for the generation of a clock signal
08/08/1989US4856032 High speed programmable frequency divider and PLL
08/08/1989US4855828 Television synchronizing arrangement
08/08/1989US4855689 Phase lock loop with switchable filter for acquisition and tracking modes
08/08/1989US4855688 Multiple reference frequency generator
08/08/1989US4855683 Digital phase locked loop with bounded jitter
08/03/1989DE3801418A1 Frequency synthesis circuit
08/02/1989EP0326466A1 Frequency-locking device for an oscillator
08/02/1989EP0326202A1 Voltage-controlled oscillator
08/01/1989US4853642 Phase controlled demodulator for digital communications system
07/1989
07/27/1989WO1989006881A1 Frequency synthesisers
07/26/1989EP0325394A2 Transmitter having PLL circuit
07/26/1989EP0325025A1 Frequency modulation in phase-locked loop
07/25/1989US4851910 Synchronizing pulse signal generation device
07/25/1989US4851787 Low noise frequency synthesizer
07/25/1989US4851710 Metastable prevent circuit
07/18/1989US4849993 Clock holdover circuit
07/18/1989US4849716 Direct optical injection locking circuitry utilizing optical oscillator tuning
07/18/1989US4849715 Incrementally tuned phase locked loop frequency synthesizer
07/18/1989US4849714 Signal generating apparatus
07/18/1989US4849704 Duty cycle independent phase detector
07/18/1989US4849663 Switchable smoothing network
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