发明名称 |
Recording medium, its manufacturing method, mother disc for recording medium, and its manufacturing method |
摘要 |
A recording medium is provided and includes; a substrate having a first area formed with a first groove and a second area formed with a second groove, at least one information layer provided on the substrate, and a protecting layer provided on the information layer. Predetermined binary information has previously been recorded on the first groove and the first groove is shallower or narrower than the second groove.
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申请公布号 |
US7952985(B2) |
申请公布日期 |
2011.05.31 |
申请号 |
US20080141549 |
申请日期 |
2008.06.18 |
申请人 |
SONY CORPORATION |
发明人 |
SUWABE MASATSUGU;TAKASE FUMINORI |
分类号 |
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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