发明名称 |
OPTICAL DISC AND OPTICAL DISC DEVICE |
摘要 |
The invention aims to provide a recordable dual-layer optical disc which allows precise recording learning on both layers. A first information recording layer located further from the light incidence side includes a read-only control data area (304a), a first test area (306a), and a second test area (315a). A second information layer located closer to the light incidence side includes a third test area (304b) located at a position opposite to the control data area (304a), and a fourth test area (315b) located at a position opposite to the second test area (315a).
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申请公布号 |
EP1804240(A1) |
申请公布日期 |
2007.07.04 |
申请号 |
EP20050785219 |
申请日期 |
2005.09.26 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
ISHIDA, TAKASHI |
分类号 |
G11B7/125;G11B7/0045;G11B7/007 |
主分类号 |
G11B7/125 |
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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