Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Yao-Hsin Wang0
Chih-Chung Wen0
Date of Patent
July 14, 2009
Patent Application Number
11384282
Date Filed
March 21, 2006
Patent Primary Examiner
Patent abstract
A servo control device couples with an optical pickup head, which outputs a TEZC (tracking error zero crossing) signal. The servo control device includes a detection module, a signal generation module, and a selection module. In this case, the detection module detects emboss areas in an optical disk to output an emboss indication signal. The signal generation module generates a pseudo signal in accordance with the moving speed of the optical pickup head and the TEZC signal. The selection module generates a modified TEZC signal in accordance with the emboss indication signal, the pseudo signal and the TEZC signal. An optical disk drive including the servo control device and a servo control method thereof are also provided.
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