DLL circuit and camcorder using DLL circuit

Details DLL circuit and camcorder using DLL circuit DLL circuit and camcorder using DLL circuit

2006-03-28

2006-03-28

Wells, Kenneth B. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Synchronizing

C327S158000

Reexamination Certificate

active

07019573

ABSTRACT:
A DLL circuit which can prevent transition to a pseudo lock state is provided. The DLL circuit includes a delay stage to which a reference clock is input and in which variable delay elements D able to change an amount of delay are connected in a plurality of stages, a phase comparator (PH Comp) which compares the phase of the reference clock to the phase of one delay signal extracted from the delay stage, a delay control circuit which performs delay control of the delay element in the delay stage on the basis of the comparison result by the phase-comparison means, and a DFF which detects a phase relationship of at least two delay signals extracted from the delay stage to discriminate a state which is not a normal lock state and controls the delay control circuit to perform state transition to the normal lock state.

REFERENCES:
patent: 6119242 (2000-09-01), Harrison
patent: 6239634 (2001-05-01), McDonagh
patent: 6259290 (2001-07-01), Takada et al.
patent: 6437616 (2002-08-01), Antone et al.
patent: 6680634 (2004-01-01), Ruha et al.
patent: 6844761 (2005-01-01), Byun et al.
patent: 6911850 (2005-06-01), Okamura

Affiliated with

Also associated with

Rating

DLL circuit and camcorder using DLL 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 DLL circuit and camcorder using DLL circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and DLL circuit and camcorder using DLL circuit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3576374