DLL circuit and method of controlling the same

Details DLL circuit and method of controlling the same DLL circuit and method of controlling the same

2007-07-16

2009-10-06

Donovan, Lincoln (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Synchronizing

C327S156000, C327S175000

Reexamination Certificate

active

07598783

ABSTRACT:
A DLL circuit includes a duty ratio detection unit that detects a duty ratio of a rising clock and a duty ratio of a falling clock, thereby outputting a duty ratio detection signal. A correction control unit generates a correction control signal in response to the duty ratio detection signal. A duty ratio correction unit corrects a duty ratio of an internal. clock in response to the correction control signal, thereby outputting a reference clock.

REFERENCES:
patent: 5614855 (1997-03-01), Lee et al.
patent: 6853225 (2005-02-01), Lee
patent: 6859081 (2005-02-01), Hong et al.
patent: 6963235 (2005-11-01), Lee
patent: 2004/0066873 (2004-04-01), Cho et al.
patent: 2004/0155686 (2004-08-01), Kim et al.
patent: 2006/0001462 (2006-01-01), Kim et al.
patent: 2006/0197565 (2006-09-01), Kang
patent: 2004-129255 (2004-04-01), None
patent: 1020000055361 (2000-09-01), None
patent: 1020010110968 (2001-12-01), None
patent: 1020050055925 (2005-06-01), None
“A Register-Controlled Digital DLL with Digital Duty Cycle Detector for Multi Gbps GDDR3 SDRAM”, Memory R&D Division, Hynix Semiconductor Inc. Ichon, Kyoungki, Korea, hyunwoo.lee@hynix.com.

Affiliated with

Also associated with

Rating

DLL circuit and method of controlling the same does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4139937