Clock recovery arrangement

Details Clock recovery arrangement Clock recovery arrangement

1983-08-29

1985-10-08

Olms, Douglas W.

Pulse or digital communications

Spread spectrum

Direct sequence

328133, H03D 324

Patent

active

045464863

ABSTRACT:
A clock recovery arrangement particularly suitable for recovering a clock signal from Manchester-encoded data. The system includes a locally generated clock at twice the data rate. This locally generated clock is phase locked to the incoming data transitions. Then, the locked locally generated clock is divided by two to produce a clock signal corresponding to the data rate. A clock flipper circuit operating according to a predetermined algorithm determines whether to change the polarity of the clock signal to provide a correct polarity recovered clock.

REFERENCES:
patent: 3671776 (1972-06-01), Houston
patent: 3988696 (1976-10-01), Sharpe
patent: 4112383 (1978-09-01), Burgert
patent: 4166979 (1979-09-01), Waggener
patent: 4346353 (1982-08-01), Scholz
patent: 4456890 (1984-06-01), Carickhoff

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