Autonomous pulse train timing controls for time-mark alignment

Details Autonomous pulse train timing controls for time-mark alignment Autonomous pulse train timing controls for time-mark alignment

1993-01-14

1995-03-14

Chin, Stephen

Pulse or digital communications

Synchronizers

Phase displacement, slip or jitter correction

455 512, 4551803, 327159, H04B 700

Patent

active

053982630

ABSTRACT:
A phase lock loop (700) maintains a freewheeling capability while making phase corrections to a sample clock signal based on a precision timing signal. The phase corrections are dispersed over time such that data reception in uninterrupted so that data integrity is maintained during the phase corrections. The phase lock loop (700) includes a first divider circuit (721) having a divisor n, coupled for dividing the incoming clock signal by n to produce a bit clock signal. A second divider circuit (725) is coupled to the bit clock signal for dividing the bit clock signal to produce the sample clock signal. A phase comparator (717) is coupled to a 1PPS signal that provides a time-mark to said phase lock loop (700) for calibration, wherein the phase comparator (717) measures a number of input clock signal cycles from a predetermined edge of the 1PPS signal to a predetermined edge of the sample clock signal and provides a correction signal indicative of a number of input clock signal cycles and a phase direction error between the sample clock signal and the 1PPS signal for modifying a value of the divisor n for correcting the measured phase error simultaneously with data reception.

REFERENCES:
patent: 3983498 (1976-09-01), Malek
patent: 4188582 (1980-02-01), Cannalte et al.
patent: 4696051 (1987-09-01), Breeden et al.
patent: 5052031 (1991-09-01), Molloy
patent: 5121417 (1992-06-01), Swierczek
patent: 5289508 (1994-02-01), Wada et al.

Affiliated with

Also associated with

Rating

Autonomous pulse train timing controls for time-mark alignment does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Autonomous pulse train timing controls for time-mark alignment, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Autonomous pulse train timing controls for time-mark alignment will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-717724