发明名称 |
Optical disc |
摘要 |
An optical disk includes a land and a groove. On this optical disk, data is recorded on both the land and the groove. A distance between the center of the land and the center of the groove adjacent to the land is 0.28 mum or more. The optical disk has a data efficiency of 80% or more. Thus, an optical disk having a storage capacity of 25 GB or more can be provided. |
申请公布号 |
SK5522003(A3) |
申请公布日期 |
2003.11.04 |
申请号 |
SK20030055220 |
申请日期 |
2001.10.04 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
ISHIDA TAKASHI;ISHIBASHI HIROMICHI;SHOJI MAMORU;NAKAMURA ATSUSHI;MINAMINO JUNICHI;FURUMIYA SHIGERU |
分类号 |
G11B7/007;G11B7/013;G11B7/24;G11B7/24079;G11B7/24082;G11B7/24085;(IPC1-7):G11B7/007;G11B20/12 |
主分类号 |
G11B7/007 |
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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