Synchronizer circuit

Details Synchronizer circuit Synchronizer circuit

1975-07-14

1976-12-14

Pitts, Harold

Communications: electrical

Digital comparator systems

307232, H04Q 500, H03K 1728

Patent

active

039978729

ABSTRACT:
When two asynchronous signals may occur at approximately the same time, only one of the signals being able to control consequent events, a circuit accounts for the conflict situation by selectively adding a delay until the conflict situation has settled. While the circuit does not determine which asynchronous event may control, the selective delay extends the time for the decision to be made. This circuit provides high reliability while minimizing delays and eliminates the need for indiscriminately adding a delay to each asynchronous event so as to resolve conflict situations. The circuit has particular applicability to volatile memory systems wherein conflict between processor requests and refresh requests to memory occur and allows processor requests to proceed with minimum delay in nearly all situations.

REFERENCES:
patent: 3444470 (1969-05-01), Bolt
patent: 3515998 (1970-06-01), Adams
patent: 3634769 (1972-01-01), Sleater
patent: 3668436 (1972-06-01), Bacon
patent: 3824409 (1974-07-01), Patil

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