Clock data recovery apparatus

Details Clock data recovery apparatus Clock data recovery apparatus

2007-06-29

2010-11-02

Payne, David C (Department: 2611)

Pulse or digital communications

Synchronizers

Phase displacement, slip or jitter correction

C375S354000, C375S371000, C375S373000

Reexamination Certificate

active

07826583

ABSTRACT:
A clock data recovery apparatus includes a phase looked loop unit, a voltage control delay line, a phase detection unit, a charge pump unit, and a loop filter unit. The phase looked loop unit outputs a plurality of clock signals which are different from each other in phase and of which frequency is lower than that of data. The voltage control delay line outputs recovered clock signals by delaying the clock signals according to input voltage levels. The phase detection unit outputs recovered data in synchronization with the clock signals, respectively and outputs increment and decrement signals which have wider pulse width than the data by comparing the recovered clock signals with the data. The charge pump unit outputs a corresponding current in response to the increment and decrement signals. The loop filter unit determines an amount of delay in the voltage control delay line by outputting the voltage.

REFERENCES:
patent: 5059833 (1991-10-01), Fujii
patent: 6173432 (2001-01-01), Harrison
patent: 6208183 (2001-03-01), Li et al.
patent: 6252444 (2001-06-01), Lee
patent: 6597218 (2003-07-01), Gauthier et al.
patent: 6775345 (2004-08-01), Song
patent: 6788045 (2004-09-01), Gauthier et al.
patent: 6812758 (2004-11-01), Gauthier et al.
patent: 6825731 (2004-11-01), Hasegawa
patent: 6931086 (2005-08-01), Harrison
patent: 6952462 (2005-10-01), Harrison
patent: 7057432 (2006-06-01), Yoo et al.
patent: 7061290 (2006-06-01), Hasegawa
patent: 7127017 (2006-10-01), Evans et al.
patent: 7129800 (2006-10-01), Gauthier et al.
patent: 7134036 (2006-11-01), Guan
patent: 7236028 (2007-06-01), Choi
patent: 7251305 (2007-07-01), Gauthier et al.
patent: 7567629 (2009-07-01), Fredriksson
patent: 7592877 (2009-09-01), Shiramizu et al.
patent: 7602876 (2009-10-01), Harrison
patent: 2002/0140504 (2002-10-01), Hasegawa
patent: 2003/0227989 (2003-12-01), Rhee et al.
patent: 2004/0155696 (2004-08-01), Gauthier et al.
patent: 2005/0168255 (2005-08-01), Gauthier et al.
patent: 2006/0076991 (2006-04-01), Yoo et al.
patent: 2006/0268958 (2006-11-01), Sindalovsky et al.
patent: 2007/0009066 (2007-01-01), Fredriksson
patent: 2008/0101524 (2008-05-01), Jeong et al.
patent: 2001-320353 (2001-11-01), None
patent: 1999-0065351 (1999-08-01), None
patent: 10-2003-0086107 (2003-11-01), None
patent: 10-2005-0014926 (2005-02-01), None
US 7,137,024, 11/2006, James (withdrawn)
Korean Notice of Allowance issued in Korean Patent Application No. KR 10-2006-0106144, dated May 23, 2008.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4233316