Circuits, methods, apparatus, and systems for recovery of...

Induced nuclear reactions: processes – systems – and elements – Reactor structures – Circulating fluid within reactor

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C375S377000, C375S374000, C375S327000, C375S149000, C375S145000, C369S030080, C369S131000

Reexamination Certificate

active

07742556

ABSTRACT:
Circuits, methods, apparatus, and systems for recovering a clock from a spread spectrum signal having a periodic modulation profile. The circuits generally include an error detector circuit configured to compare the spread spectrum signal and a recovered clock signal, and to produce a first error signal corresponding to the periodic modulation profile and a second error signal corresponding to phase differences other than the spread spectrum modulation, a record and playback unit configured to record a value to a frequency memory, said value based on the first error signal and produce a third error signal corresponding to a predicted periodic modulation based at least in part on the recorded value, and a signal generator configured to produce the recovered clock signal in response to the second and third error signals.

REFERENCES:
patent: 4989219 (1991-01-01), Gerdes et al.
patent: 5488627 (1996-01-01), Hardin et al.
patent: 6563857 (2003-05-01), Shi et al.
patent: 6687319 (2004-02-01), Perino et al.
patent: 7394885 (2008-07-01), Giunco et al.
patent: 2001/0017557 (2001-08-01), Friedrich et al.
patent: 2002/0109537 (2002-08-01), Lee
patent: 2003/0043896 (2003-03-01), Proidl
patent: 2003/0197565 (2003-10-01), Tan et al.
patent: 2004/0058662 (2004-03-01), Gieske et al.
patent: 2006/0033582 (2006-02-01), Staszewski et al.
I-Teh Sha, Kuang-Yu Chen, Albert Chen and Jeff Keip; An Adaptive Spread-Spectrum Clock Generator; RF Design; Aug. 1, 2001; 5 Pages.; Prima Business Magazine & Media Inc., 2006.
John Fessler; Spread Spectrum Clock Generator Technology; Lexmark International, Inc.; 2 Pages.; http://www.lexmark.com/sscg.
Hsiang-Hui Chang, I-Hui Hua and Shen-Iuan Liu; A Spread-Spectrum Clock Generator with Triangular Modulation; IEEE Journal of Solid-State Circuits; Apr. 2003; pp. 673-676; vol. 38, No. 4; 2003 IEEE.
Keith B. Hardin, John T. Fessler and Donald R. Bush; Spread Spectrum Clock Generation for the Reduction of Radiated Emissions; 1994 IEEE, pp. 227-231; International Symposium on Electromagnetic Compatibility; Chicago, Aug. 22-26, 1994.

LandOfFree

Say what you really think

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

Rating

Circuits, methods, apparatus, and systems for recovery of... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Circuits, methods, apparatus, and systems for recovery of..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Circuits, methods, apparatus, and systems for recovery of... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-4245416

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