| Patents for H03L 7 - Automatic control of frequency or phase; Synchronisation (37,643) |
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| 04/30/1991 | US5012494 Method and apparatus for clock recovery and data retiming for random NRZ data |
| 04/30/1991 | US5012437 Digitally controlled oscillator |
| 04/30/1991 | US5012204 Phase control circuit for regulating a CD player drive |
| 04/30/1991 | US5012198 Digital PLL circuit having reduced lead-in time |
| 04/24/1991 | EP0423663A1 Synchronised watch |
| 04/23/1991 | CA1283479C Data input circuit with digital phase locked loop |
| 04/23/1991 | CA1283462C Generating two-phase clocks |
| 04/18/1991 | WO1991005422A1 Phase detector for phase-locked loop clock recovery system |
| 04/17/1991 | EP0422373A2 Generator of topology independent reference signals |
| 04/17/1991 | EP0151633B1 An interruptible voltage-controlled oscillator |
| 04/16/1991 | US5008637 Fully integrated charge pump phase locked loop |
| 04/16/1991 | US5008636 Apparatus for low skew system clock distribution and generation of 2X frequency clocks |
| 04/16/1991 | US5008635 Phase-lock-loop lock indicator circuit |
| 04/16/1991 | US5008629 Frequency synthesizer |
| 04/16/1991 | CA1283176C Phase comparator |
| 04/10/1991 | EP0394358A4 Low voltage and low power frequency synthesizer |
| 04/09/1991 | US5006819 Track and hold phase locked loop circuit |
| 04/03/1991 | EP0420082A2 Digitally synchronized sweep signal source |
| 04/03/1991 | EP0419823A1 Digital time base generator with adjustable delay between two outputs |
| 04/03/1991 | EP0419622A1 Frequency synthesisers with fractional division. |
| 04/03/1991 | EP0419618A1 Bit synchronizer |
| 04/02/1991 | US5005141 Phase-locked loop circuit |
| 04/02/1991 | US5005079 Automatic frequency control circuit |
| 04/02/1991 | US5005016 Hybrid phase-locked loop |
| 04/02/1991 | CA1282468C Low noise magnetically tuned resonant circuit |
| 04/02/1991 | CA1282466C Variable capacitance circuit |
| 04/02/1991 | CA1282465C Phase-locked loop |
| 04/02/1991 | CA1282464C Phase-locked oscillator |
| 03/27/1991 | EP0418862A2 Frequency modulation circuit using VCO |
| 03/27/1991 | CN1012219B Distant tracking method for continuously finding moving object |
| 03/26/1991 | US5003553 Spread spectrum phase locked loop with phase correction |
| 03/26/1991 | US5003272 Circuit arrangement for synchronizing a frequency-controllable oscillator |
| 03/26/1991 | CA1282128C Voltage controlled oscillator with self-adjustment |
| 03/26/1991 | CA1282123C Low phase noise rf synthesizer |
| 03/21/1991 | WO1991003877A1 Adaptive control system for pulsed megawatt klystrons |
| 03/20/1991 | EP0417808A2 Phase comparator having two different comparison characteristics |
| 03/20/1991 | EP0417682A1 Transponder used for positioning of a satellite |
| 03/20/1991 | CN1050086A Frequency synchronization of electronics for vortex shedding flowmeter |
| 03/19/1991 | US5001564 Vertical phase adjust circuit |
| 03/19/1991 | US5001482 BiCMOS digital-to-analog converter for disk drive digital recording channel architecture |
| 03/15/1991 | CA2025240A1 Satellite position-fixing transponder |
| 03/13/1991 | EP0416877A2 Frequency synchronisation |
| 03/13/1991 | EP0416840A2 Phase locked loop circuit with digital control |
| 03/12/1991 | US4999526 To a pulse |
| 03/07/1991 | DE4026253A1 Regulating actual frequency of pulse chain - measuring phase position w.r.t. stipulated frequency and using resultant difference signal to maintain constant value |
| 03/06/1991 | EP0415649A2 Compensated phase locked loop circuit |
| 03/06/1991 | EP0415316A1 Carrier recovery device for a Costas loop |
| 03/05/1991 | US4998262 Generation of topology independent reference signals |
| 03/05/1991 | US4998217 Sweep generator linearization system and method |
| 03/05/1991 | US4998075 Programmable multiple oscillator circuit |
| 03/05/1991 | CA1281087C2 Multiple frequency digital phase locked loop |
| 03/05/1991 | CA1281086C2 Multiple frequency digital phase locked loop |
| 03/05/1991 | CA1281085C2 Multiple frequency digital phase locked loop |
| 03/01/1991 | CA2024111A1 Costas loop carrier rrecovery device |
| 02/27/1991 | EP0414488A2 Spread spectrum phase locked loop with phase correction |
| 02/27/1991 | EP0414445A2 Direct digital frequency synthesizer |
| 02/27/1991 | EP0414392A2 Phase detector |
| 02/27/1991 | EP0414305A2 Phase comparator circuit |
| 02/27/1991 | EP0414260A2 Frequency synthesizer for implementing generator of highly pure signals and circuit devices, such as VCO, PLL and SG, used therein |
| 02/27/1991 | EP0414194A2 Laser pumped atomic frequency standard with high frequency stability |
| 02/26/1991 | US4996699 Digitally settable frequency divider, especially for a frequency synthesizer |
| 02/26/1991 | US4996697 Deglitching means for digital communication systems |
| 02/26/1991 | US4996596 Phase synchronizing circuit in video signal receiver and method of establishing phase synchronization |
| 02/26/1991 | CA2023323A1 Direct digital frequency synthesizer |
| 02/20/1991 | EP0413475A2 Analogue/digital phase locked loop |
| 02/20/1991 | EP0413473A2 Voltage controlled oscillator |
| 02/20/1991 | EP0413472A2 Switched capacitor pilot phase or magnitude detector |
| 02/20/1991 | EP0413468A2 Vertical phase adjust circuit |
| 02/20/1991 | EP0238599B1 Demodulation of television signals |
| 02/19/1991 | US4994802 Subscriber unit for wireless digital telephone system |
| 02/19/1991 | US4994766 Frequency modulator |
| 02/19/1991 | US4994762 Multiloop synthesizer with optimal spurious performance |
| 02/19/1991 | CA1280473C Digital phase-locked loop circuits |
| 02/13/1991 | EP0412491A2 Frequency Synthesizer |
| 02/13/1991 | EP0412435A2 Voltage-controlled variable oscillator, in particular for phase-lock loops |
| 02/13/1991 | EP0412427A2 Sample-and-hold digital phase-locked loop for ASK signals |
| 02/13/1991 | EP0412207A1 Automatic frequency control circuit |
| 02/12/1991 | CA1280177C Phase comparator insensitive to clock asymmetry |
| 02/12/1991 | CA1280159C Phase-locked loop coefficient generator for a filter arrangement having a non-rational ratio between input and output sampling frequencies |
| 02/06/1991 | EP0411905A2 Phase locked loop oscillating circuit |
| 02/06/1991 | EP0236419B1 Phase changer |
| 02/05/1991 | CA1279909C Apparatus and method for synchronizing a communication system |
| 02/05/1991 | CA1279908C Method and apparatus for locking the signal from a control oscillator to that of a reference oscillator |
| 02/03/1991 | WO1991002418A1 Synthesized selective call receiver having variable characteristics |
| 01/30/1991 | EP0410297A1 Circuit to be used in data transmission systems, which regenerates the clock signal starting from a given message |
| 01/30/1991 | EP0410029A1 Phase synchronization circuit arrangement using feedback |
| 01/30/1991 | CN1011460B Method and circuit for reseting time clock from communication signal |
| 01/30/1991 | CN1011458B Controlled oscillator |
| 01/29/1991 | US4988960 FM demodulation device and FM modulation device employing a CMOS signal delay device |
| 01/29/1991 | US4988955 Phase-locked loop apparatus |
| 01/29/1991 | CA1279706C Phase-locked loop with redundant reference input |
| 01/25/1991 | WO1991002405A1 Phase detector |
| 01/23/1991 | EP0409277A2 Frequency modulator |
| 01/23/1991 | EP0409220A2 Phase locked loop for the extraction of a clock signal for data transmission systems |
| 01/23/1991 | EP0409127A2 Phase-locked loop type frequency synthesizer having improved loop response |
| 01/23/1991 | EP0408983A1 Frequency synthesizer |
| 01/23/1991 | EP0408780A1 Digital phase detector |
| 01/22/1991 | US4987387 Phase locked loop circuit with digital control |
| 01/22/1991 | US4987386 Coherent phase and frequency recovery method and circuit |
| 01/22/1991 | US4987373 Monolithic phase-locked loop |