Extended range phase detector
September 26, 2008. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3662159 3723889 Digital phase-lock loop systems for phase processing of signals Versatile phase-locked loop for read data recovery Variable rate clock signal recovery circuit Pulse count generator for wide range digital phase detector Timing recovery circuit for digital data 4030045 Frequency synthesizer with phase locked loop and counter Digitized frequency synthesizer InventorAssigneeApplicationNo. 249283 filed on 09/26/1988US Classes:327/12, With logic or bistable circuit326/99, HAVING LOGIC LEVELS CONVEYED BY SIGNAL FREQUENCY OR PHASE327/231Phase shift by less than period of inputExaminersPrimary: James, Andrew J.Assistant: Roseen, Richard Attorney, Agent or FirmInternational ClassesH03K 005/26H03K 005/00 AbstractA linear three-state phase detector capable of accurately responding to simultaneous input signals has its linear range extended by uniquely sensing cycle slip and stepping a binary up-down counter. The cycle slip detector is capable of handling simultaneous inputs by determining that a resulting change of the three-state phase detector output occurs after a predetermined time after an input signal.Other References
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