Optical data synchronization scheme

Optical communications – Transmitter and receiver system – Including synchronization

Reexamination Certificate

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C398S154000, C398S161000

Reexamination Certificate

active

07835649

ABSTRACT:
Asynchronous optical data is aligned with synchronous convergence points in an optical packet switching system. The convergence points can be any place where data enters an optical packet switching element, buffer stage, switch fabric, etc. The arrival time for data approaching the convergence point is compared with a reference signal associated with the upcoming convergence point. The comparison is used to identify the amount of time-shift required to align the approaching data with the reference signal. Control information is derived according to the comparison and used to control an optical data aligner that synchronizes the data with the convergence point.

REFERENCES:
patent: 4677618 (1987-06-01), Haas et al.
patent: 5032010 (1991-07-01), Su
patent: 5319484 (1994-06-01), Jacob et al.
patent: 5469284 (1995-11-01), Haas
patent: 5497261 (1996-03-01), Masetti
patent: 5506712 (1996-04-01), Sasayama et al.
patent: 5526156 (1996-06-01), Bostica et al.
patent: 5535032 (1996-07-01), Bottle
patent: 5617233 (1997-04-01), Boncek
patent: 6137610 (2000-10-01), Patrick
patent: 6144786 (2000-11-01), Chethik
patent: 6239892 (2001-05-01), Davidson
patent: 6262823 (2001-07-01), Nowatzyk
patent: 6288808 (2001-09-01), Lee et al.
patent: 6437889 (2002-08-01), Davidson
patent: 6535661 (2003-03-01), Takahashi et al.
patent: 6619867 (2003-09-01), Asahi
patent: 6690891 (2004-02-01), Le Sauze et al.
patent: 6775343 (2004-08-01), Gambini et al.
patent: 6778536 (2004-08-01), Ofek et al.
patent: 6957018 (2005-10-01), Araki et al.
patent: 7177544 (2007-02-01), Wada et al.
patent: 7305186 (2007-12-01), Islam
patent: 7313329 (2007-12-01), Yoo et al.
patent: 7428383 (2008-09-01), Maciocco et al.
patent: 2002/0080450 (2002-06-01), Hait
patent: 2003/0095312 (2003-05-01), Zami et al.
patent: 2005/0041970 (2005-02-01), Harai
patent: 2006/0008273 (2006-01-01), Xue et al.
Xu et al., Techniques for optical packet switching and optical burst switching, IEEE Communications Magazine, Jan. 2001, pp. 136-142, v. 39, issue 1, New York, U.S.A. (http://www.comsoc.org/ci/private/2001/jan/pdf/xu.pdf).
Hunter, David K., “Optical Packet Switching—Tutorial for WAON '98”, Dept. of Electronic and Electrical Engineering, University of Strathclyde, May 1998.
Ganesan, Kalpana, “Optical Packet Switching: Advances and Contention Resolution”, CSCE 990 Networks Systems Seminar, Feb. 26, 2002, Microsoft® PowerPoint® presentation, 22 pages.
“Contention Resolution using Delay-lines”, Introduction, http://www.stanford.edu/cord.html, last updated Apr. 16, 2003, 2 pgs.
NTT Photonics Laboratories, “Optical packet synchronization in optical layer”, Jul. 15, 2003, 1 pg.
Ku, Pei-Cheng, et al., “Variable optical buffer using slow light in semiconductor nanostructures”,Proceedings of the IEEE, vol. 91, No. 11, Nov. 2003, 31 pages.
Takahashi, Ryo “Recent Progress in Optical Packet Processing Technologies for Optical Packet-switched Networks”,NTT Technical Review, vol. 2, No. 7, Jul. 2004, pp. 12-22.
International Search Report for PCT/US06/060229; Date of mailing Oct. 15, 2007; ISA/US.
International Preliminary Report on Patentablity and Written Opinion of the ISA for PCT/US06/060229; Date of mailing Oct. 15, 2007; ISA/US.
Stolowitz Ford Cowger LLP, Listing of Related Cases, Aug. 12, 2009.

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