Method and apparatus for detecting specific signal pattern...

Details Method and apparatus for detecting specific signal pattern... Method and apparatus for detecting specific signal pattern...

2005-06-17

2010-02-23

Young, Wayne R (Department: 2627)

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

C369S053310, C369S059110

Reexamination Certificate

active

07668061

ABSTRACT:
A method utilized for detecting a physical mark in a signal read from an optical disc, including: generating a matching signal capable of being utilized to identify the physical mark according to a reference clock and a wobble clock; generating a comparison signal by comparing the matching signal and a wobble data signal; determining whether a period of which the level of the comparison signal surpass a predetermined level within a predetermined period is greater than a threshold or not; and if the period greater than the threshold, generating an indication signal corresponding to the location of the physical mark. Wherein the wobble data signal and the wobble clock is generated according to the read back signal.

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