发明名称 |
Disc discrimination apparatus and method |
摘要 |
Detection is made as to at least one of a ratio between a tracking error and a focus error, and a duty cycle of an off-track signal with respect to an optical disc. A decision is made as to whether or not the optical disc is playable on the basis of the detected at least one of the ratio and the duty cycle. The ratio is a ratio of the focus error to the tracking error or a ratio of the tracking error to the focus error.
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申请公布号 |
US8483024(B2) |
申请公布日期 |
2013.07.09 |
申请号 |
US20110929867 |
申请日期 |
2011.02.22 |
申请人 |
KOMATSU TAKAHIRO;FUJII SEIICHIRO;UBUKATA MASAO;J & K CAR ELECTRONICS CORPORATION |
发明人 |
KOMATSU TAKAHIRO;FUJII SEIICHIRO;UBUKATA MASAO |
分类号 |
G11B20/18;G11B7/00 |
主分类号 |
G11B20/18 |
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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