发明名称 |
Optical Information Recording Medium, Its Information Recording/Reproducing Method, and Information Recording/Reproducing Device |
摘要 |
An optical information recording medium includes a substrate, n information recording layers provided on the substrate, and spacer layers, each of which is provided so as to be interposed between the information recording layers, wherein each of (n-1) or more of the information recording layers has a layer number information part that is formed in correspondence with one or more recording marks X and contains layer number information, where n represents an integer of not less than 2, and the layer number information is information used for determining which a given information recording layer is among the n information recording layers. Each recording mark X has a length in a circumferential direction longer than a length of a recording mark Y used for recording another information in the information recording layers.
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申请公布号 |
US2008043602(A1) |
申请公布日期 |
2008.02.21 |
申请号 |
US20050577746 |
申请日期 |
2005.11.08 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
NISHIKIORI KEIJI;TOMIYAMA MORIO;OHNO EIJI |
分类号 |
G11B7/24;G11B7/00;G11B7/24038 |
主分类号 |
G11B7/24 |
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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