发明名称 |
Optical recording medium, optical recording medium manufacturing method, and optical recording medium reproducing method |
摘要 |
An optical recording medium: which includes a main-information area in which a metal reflection film is formed on a substrate where a row of pits is formed as main data, and a sub-information area in which medium identification information is recorded which is used to identify the optical recording medium individually by removing the metal reflection film partially and forming a plurality of reflection-film removed areas; and whose information is reproduced by irradiating the metal reflection film with a beam of light, in which in the sub-information area, a row of pits or a groove is formed on the substrate, and the track pitch of the row of pits or the groove is 0.24 mum or wider and 0.45 mum or narrower.
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申请公布号 |
US2005201260(A1) |
申请公布日期 |
2005.09.15 |
申请号 |
US20040509745 |
申请日期 |
2004.09.30 |
申请人 |
KAWAGUCHI YUKO;ABE SHINYA;TOMIYAMA MORIO;OHNO EIJI |
发明人 |
KAWAGUCHI YUKO;ABE SHINYA;TOMIYAMA MORIO;OHNO EIJI |
分类号 |
G11B7/24;G11B7/005;G11B7/007;G11B7/258;G11B7/26;(IPC1-7):G11B7/24 |
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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