Two-stage synchronizer

Details Two-stage synchronizer Two-stage synchronizer

1987-11-30

1989-04-11

Griffin, Robert L.

Pulse or digital communications

Spread spectrum

Direct sequence

307527, H04L 702

Patent

active

048212954

ABSTRACT:
A method, and apparatus to implement that method, for synchronizing an incoming signal to the transitions of a digital clock signal in the form of a periodic pulse train. The apparatus includes a first circuit pair of flip-flops arranged to sample and store the state of the input signal on either the positive and negative transitions of the periodic pulse train, an OR gate producing a signal indicative of the stored content of the first circuit, and a third circuit that samples and stores the first signal at each transition of the periodic pulse train to produce therefrom a representation of the input signal synchronized to one of the transitions of the pulse train.

REFERENCES:
patent: 4663769 (1987-05-01), Krinock
patent: 4688232 (1987-08-01), Fox

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