Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
September 21, 2010
Patent Application Number
11972534
Date Filed
January 10, 2008
Patent Primary Examiner
Patent abstract
Provided is a focus servo process automatic selecting method. In a related art optical pickup apparatus, only one of AD and DAD is selected and used when a focus servo is performed for disk detection and a focus-on operation. According to the method, servo crosstalk values of the two focus servo processes are compared and a suitable focus servo process is automatically selected, so that an optimum focus servo is realized.
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