发明名称 |
Optical disk apparatus |
摘要 |
An optical disk apparatus of the present invention measures a surface deflection component (shape of surface deflection) from a low-pass component of a compensating filter in a surface deflection measuring part provided in a DSP. Furthermore, the optical disk apparatus calculates timing at which a positional change in a surface deflection component in time required for focus jumping is a predetermined value or less in a timing calculating part, and starts focus jumping at the timing. Because of this, stable focus jumping is made possible.
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申请公布号 |
US6567357(B2) |
申请公布日期 |
2003.05.20 |
申请号 |
US20010839522 |
申请日期 |
2001.04.20 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
KISHIMOTO TAKASHI;KUZE YUUICHI;FUJIUNE KENJI;YAMAMOTO TAKEHARU;WATANABE KATSUYA |
分类号 |
G11B7/00;G11B7/085;G11B7/09;(IPC1-7):G11B7/00 |
主分类号 |
G11B7/00 |
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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