Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Tse-Hsiang Hsu0
Chia-Hua Chou0
Date of Patent
April 27, 2010
0Patent Application Number
116463070
Date Filed
December 28, 2006
0Patent Primary Examiner
Patent abstract
An apparatus for detecting a pre-pit signal at different laser power intensities of an optical disk drive. The apparatus includes an amplifier for receiving a push-pull signal acquired from an optical disk to generate an adjusted signal, a multiplexer for receiving the push-pull signal and the adjusted signal and selecting the push-pull signal or the adjusted signal as a slicing signal for output according to a power state signal, and a slicer for receiving the slicing signal and slicing the slicing signal according to a slicing level to generate the pre-pit signal. Thus, the apparatus only needs one set of slicer to correctly slice the pre-pit signal.
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