Pulse or digital communications – Synchronizers – Synchronizing the sampling time of digital data
Reexamination Certificate
2011-08-02
2011-08-02
Corrielus, Jean B (Department: 2611)
Pulse or digital communications
Synchronizers
Synchronizing the sampling time of digital data
C375S340000, C375S259000
Reexamination Certificate
active
07991099
ABSTRACT:
Embodiments for clock and/or data recovery may comprise two or more samplers to sample a relatively small number of distinct data sample phase locations of a data pulse relative to an estimate of the location of a center of the data pulse. Signal level values for the sample phase locations may be compared, and sample locations for one or more other data pulses may be adjusted based at least in part on the comparisons.
REFERENCES:
patent: 5483558 (1996-01-01), Leon et al.
patent: 7386042 (2008-06-01), Brewer
patent: 7596175 (2009-09-01), Chen
patent: 7606297 (2009-10-01), Waschura et al.
patent: 7627029 (2009-12-01), Ho et al.
patent: 2010/0020861 (2010-01-01), Leibowitz et al.
patent: 2010/0074314 (2010-03-01), Stojanovic et al.
Friedman et al., “SiGe BiCMOS integrated circuits for high-speed serial communication links” IBM J. Res. & Dev. vol. 47, No. 2/3, Mar./May 2003, pp. 259-282.
Fiedler et al., “A 1.0625 Gbps transceiver with 2x-oversampling and transmit signal pre-emphasis” (abstract only) IEEE Xplore, Solid-State Circuits Conference, Digest of Technical Papers, 44thISSCC, 1997, 3 pgs.
Song et al., “A 4-Gb/s Clock and Data Recovery Circuit Using Four-Phase 1/8-Rate Clock” ESSCIRC, 2002, pp. 239-242.
Razavi et al., “A 10 Gb/s CMOS clock and data recovery circuit with frequency detection” (abstract only) IEEE Xplore, Solid-State Circuits Conference, Digest of Technical Papers, ISSCC, 2001, 2 pgs.
Savoj et al., “Design of Half-Rate Clock and Data Recovery Circuits for Optical Communication Systems” DAC 2001, Jun. 18-22, 2001, 6 pgs.
Anand et al., “A CMOS Clock Recovery Circuit for 2.5-Gb/s NRZ Data” IEEE Journal of Solid-State Circuits, vol. 36, No. 3, Mar. 2001, pp. 432-439.
Chen Feng
Ren Mingming
Xia Xianheng
Zuo Weihua
Berkeley Law & Technology Group LLP
Corrielus Jean B
Lontium Semiconductor Corp.
LandOfFree
Clock and/or data 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 Clock and/or data recovery, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Clock and/or data recovery will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2767338