Clock recovery apparatus

Details Clock recovery apparatus Clock recovery apparatus

1989-09-11

1990-12-04

Olms, Douglas W.

Pulse or digital communications

Spread spectrum

Direct sequence

3701053, 331 1R, H03D 324

Patent

active

049759299

ABSTRACT:
A digital phase acquisition circuit includes logic for detecting an edge of incoming data and a plurality of candidate clock phases, the circuitry further including logic for determining when the data undergoes a phase transition and at least one candidate phase which undergoes a digitally equivalent transition close in time to the data transition so as to enable the candidate phase to be used for a clock for recovering information representative of the data. The circuit allows clock to be recovered within 1 bit time of a predetermined data transition occurring, thus allowing preambles of 1 bit to be utilized in data packets.

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