Phase modulated reduction of clock wander in synchronous...

H - Electricity – 03 – L

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

H03L 7/097 (2006.01) H03L 7/08 (2006.01) H03L 7/085 (2006.01) H03L 7/091 (2006.01)

Patent

CA 2254225

A phase detector for controlling a phase locked loop having a voltage controlled oscillator. A counter is clocked by a clock signal produced by the voltage controlled oscillator. A latch coupled to the counter is clocked by a modulated clock signal to latch values output by the counter. The modulated clock signal is produced by a phase modulator which modulates a synchronization clock reference signal. An accumulator coupled to the latch and clocked by the modulated clock signal receives and averages the latch values to produce a phase error signal representative of phase difference between the voltage controlled oscillator clock signal and the synchronization clock reference signal. The phase error signal is coupled to the voltage controlled oscillator to reduce the phase difference. The phase modulator modulates a rising edge of the synchronization clock reference signal with a modulation signal having modulation frequencies outside the loop bandwidth of the phase locked loop. The modulation signal is a discrete step signal having a fine time resolution which causes the latch to latch different values output by the counter in different time intervals corresponding to the time of occurrence of the modulated clock signal's rising edge with respect to the respective time intervals.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Phase modulated reduction of clock wander in synchronous... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Phase modulated reduction of clock wander in synchronous..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Phase modulated reduction of clock wander in synchronous... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-2071756

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.