Pulse or digital communications – Synchronizers – Phase displacement – slip or jitter correction
Reexamination Certificate
2006-01-24
2006-01-24
Chin, Stephen (Department: 2634)
Pulse or digital communications
Synchronizers
Phase displacement, slip or jitter correction
C375S371000, C375S373000
Reexamination Certificate
active
06990163
ABSTRACT:
The present invention is a method of acquiring phase lock to a data signal in a digital channel having a digital feedback loop. The method generally comprises: (A) applying the data signal to an analog phase lock loop configured to have (i) at least two poles and (ii) presend intermediate output signal frequency locked to the data signal; (B) applying the data signal and the intermediate output signal to the digital channel; and (C) adjusting a delay constant for the digital feedback loop to (i) compensate for variations in phase between the data signal and the intermediate output signal and (ii) acquire phase lock by using a single pole in the digital channel.
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Chin Stephen
File Erin M.
LSI Logic Corporation
Maiorana PC Christopher P.
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