发明名称 |
MULTI-LAYER OPTICAL DISK AND METHOD OF PRODUCING MULTI-LAYER OPTICAL DISK |
摘要 |
A multilayer optical disk including a plurality of information storage layers to/from which information is recorded and/or reproduced by an optical head. The plurality of information storage layers are stacked through intermediate layers and each information storage layer includes a wobbling track groove. The shape factors (amplitude of wobbling, depth of the track groove and/or slope angle of the side wall of the track groove, etc.) of the track groove of at least one information storage layer of the plurality of information storage layers are different from the shape factors of track grooves of other information storage layers. This allows a satisfactory signal to be reproduced from each information storage layer. <IMAGE>
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申请公布号 |
EP1333430(A1) |
申请公布日期 |
2003.08.06 |
申请号 |
EP20010970259 |
申请日期 |
2001.09.27 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
ABE, SHINYA |
分类号 |
G11B7/007;G11B7/24;G11B7/26;(IPC1-7):G11B7/007 |
主分类号 |
G11B7/007 |
代理机构 |
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地址 |
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