Adaptive timing using clock recovery

Details Adaptive timing using clock recovery Adaptive timing using clock recovery

2005-03-10

2010-02-16

Ghayour, Mohammad H (Department: 2611)

Pulse or digital communications

Receivers

Angle modulation

C375S375000

Reexamination Certificate

active

07664204

ABSTRACT:
Circuits and methods are provided for adjusting a frequency of a local clock signal in approximating a frequency of a host clock signal. A phase locked loop generates a local clock signal having a first phase and a first frequency. An offset adjustment circuit receives timing information relating the local clock signal to an incoming data signal and calculates a phase offset and a frequency offset indicative of adjustments to be made to the local clock signal. A first phase interpolator generates a receive clock signal from the local clock signal, the receive clock signal having a second phase and a second frequency responsive to the phase and frequency offsets. A second phase interpolator generates a transmit clock signal from the local clock signal having a third frequency responsive to the frequency offset.

REFERENCES:
patent: 5485490 (1996-01-01), Leung et al.
patent: 6397042 (2002-05-01), Prentice et al.
patent: 7012972 (2006-03-01), Isaksen et al.
patent: 7349506 (2008-03-01), Shizuki
patent: 2003/0123589 (2003-07-01), Glenn et al.
patent: 2004/0213337 (2004-10-01), Li et al.
patent: 2005/0286669 (2005-12-01), Buchwald et al.

Affiliated with

Also associated with

Rating

Adaptive timing using clock recovery does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4195459