Pulse or digital communications – Synchronizers – Phase displacement – slip or jitter correction
Reexamination Certificate
2008-04-08
2008-04-08
Tran, Khanh C. (Department: 2611)
Pulse or digital communications
Synchronizers
Phase displacement, slip or jitter correction
C370S516000
Reexamination Certificate
active
07356109
ABSTRACT:
Timing jitter sequences Δφj[n] and Δφk[n] of respective clock signals under measurement xj(t) and xk(t) are estimated, and a timing difference sequence between those timing jitter sequences is calculated. In addition, initial phase angles φ0jand φ0kof linear instantaneous phases of the xj(t) and xk(t) are estimated, respectively. A sum of a difference between those initial angles and the timing difference sequence is calculated to obtain a clock skew sequence between the xj(t) and xk(t).
REFERENCES:
patent: 4860322 (1989-08-01), Lloyd
patent: 5003256 (1991-03-01), Merrill
patent: 5754437 (1998-05-01), Blazo
patent: 5852640 (1998-12-01), Kliza et al.
patent: 6327274 (2001-12-01), Ravikanth
patent: 6384649 (2002-05-01), Boerstler et al.
patent: 6400129 (2002-06-01), Yamaguchi et al.
patent: 6519281 (2003-02-01), Taylor
patent: 6621860 (2003-09-01), Yamaguchi et al.
patent: 6661810 (2003-12-01), Skelly et al.
patent: 6795496 (2004-09-01), Soma et al.
patent: 10006551 (2000-11-01), None
patent: 10080443 (2001-03-01), None
patent: WO 9939216 (1999-08-01), None
Yamaguchi T. et al: “Extraction of peak-to-peak and RMS sinusoidal jitter using an analytic signal method” VLSI Test Symposium, 2000. Proceedings. 18th IEEE Montreal,, Canada Apr. 30-May 4, 2000, Los Alamitos, CA, USA,IEEE Comput. Soc, US, Apr. 30, 2000 (Apr. 30, 2004), pp. 395-402.
Ishida Masahiro
Soma Mani
Yamaguchi Takahiro
Advantest Corporation
Gallagher & Lathrop
Lathrop, Esq. David N.
Tran Khanh C.
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