发明名称 |
METHOD OF IDENTIFYING OPTICAL DISC |
摘要 |
A method of identifying an optical disc is disclosed. The method includes enabling an optical pick-up unit to emit a first laser beam having a first wavelength to the optical disc; controlling the optical pick-up unit to move a focus point of the first laser beam in a direction of thickness of the optical disc; obtaining a first focus error (FE) signal corresponding to the first laser beam; counting a first s-curve number corresponding to s-curve occurring in the first FE signal; and identifying the optical disc according to the first s-curve number.
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申请公布号 |
US2008205229(A1) |
申请公布日期 |
2008.08.28 |
申请号 |
US20070678625 |
申请日期 |
2007.02.26 |
申请人 |
LI YUNG-CHIH;HUANG CHENG-CHI |
发明人 |
LI YUNG-CHIH;HUANG CHENG-CHI |
分类号 |
G11B7/007 |
主分类号 |
G11B7/007 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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