System for clock and data recovery

Details System for clock and data recovery System for clock and data recovery

2007-07-31

2007-07-31

Vo, Don N. (Department: 2611)

Pulse or digital communications

Receivers

Angle modulation

C375S376000

Reexamination Certificate

active

10161217

ABSTRACT:
A clock and data recovery (CDR) system that generates one or more clock signals from a received data stream and determines an optimal clock signal to associate with the incoming data stream. The system includes a candidate clock generation circuit that operates to receive the incoming data stream and generate candidate clock signals. A transition density detector circuit determines a transition density parameter associated with each of the candidate clock signals. A controller operates to determine the optimal clock signal based on the transition density parameters.

REFERENCES:
patent: 4536876 (1985-08-01), Bahr et al.
patent: 2005/0147197 (2005-07-01), Perrott

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