发明名称 光ディスク検査装置及び光ディスク検査方法
摘要 An optical disk testing device and an optical disk testing method used for indentifying copy protection and physical defect of an optical disk. The method comprises the steps of: judging whether a defect exists or not according to a replay error of the optical disk (10) during data replaying; detecting whether a replay error also occurs in an L1 at the same radius position through a system controller (32) when the replay error occurs in an L0 of a double-layer optical disk; making a determination of copy protection when the replay error does not occur in the L1; and making a determination of physical defect when the replay error also occurs in the L1.
申请公布号 JP5640251(B2) 申请公布日期 2014.12.17
申请号 JP20110006767 申请日期 2011.01.17
申请人 发明人
分类号 G11B20/18;G11B7/004;G11B20/10 主分类号 G11B20/18
代理机构 代理人
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