Clock recovery circuit

Details Clock recovery circuit Clock recovery circuit

Filed on

2007-07-10

Date issued

2007-07-10

Examiner

Phu, Phuong (Department: 2611)

Patent Class

Pulse or digital communications

SubClass

Synchronizers

SubSubClass

Synchronizing the sampling time of digital data

Other Related Categories

C375S371000, C375S375000, C375S376000, C331S057000, C327S144000

Type

Reexamination Certificate

Status

active

Patent number

10458428

Description

ABSTRACT:
The clock recovery circuit includes a first oscillator and an edge detector. The first oscillator generates a plurality of clocks having different phases and a predetermined frequency. The edge detector detects two clocks, among the plurality of clocks, between edges of which an input data signal has made a transition. The first oscillator includes a plurality of delay cells connected in a ring, and outputs of the plurality of delay cells are output as the plurality of clocks. Each of the plurality of delay cells selectively delays a first-delay added input data signal or the signal output from the preceding delay cell, and outputs the selected delayed signal. The edge detector controls one delay cell among the plurality of delay cells corresponding to the result of the detection, to delay and output the first-delay added input data signal.

REFERENCES:
patent: 6373911 (2002-04-01), Tajima et al.
patent: 6559727 (2003-05-01), Boerstler
patent: 6584163 (2003-06-01), Myers et al.
patent: 6760389 (2004-07-01), Mukherjee et al.
patent: 6914953 (2005-07-01), Boerstler
patent: 6973149 (2005-12-01), Fyvie
patent: 6990597 (2006-01-01), Abe et al.
patent: 2002/0047738 (2002-04-01), Kamihara
patent: 1350234 (2002-05-01), None
“156 Mbps CMOS Clock Recovery Circuit for Burst-mode Transmission”, Makoto Nakamura, et al., 1996 Symposium on VLSI Circuits Digest of Technical Papers, pp. 122-123.

Affiliated with

Also associated with

Rating

Clock recovery circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Clock recovery circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Clock recovery circuit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3778740