Apparatus for and method of measuring clock skew

Details Apparatus for and method of measuring clock skew Apparatus for and method of measuring clock skew

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

11585526

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).

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