发明名称 |
Optical recording and reproducing method and apparatus having multiple recording layers |
摘要 |
An optical recording medium having two or more information recording layers in which information is recorded at a high recording density. The optical recording medium is comprised of information recording layers between a first surface at which light is incident and a second surface opposite the first surface. The first information recording layer nearest to the second surface is a phase-modulation information recording layer, and the second information recording layer is a reflectance-modulation information recording layer.
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申请公布号 |
US7092343(B2) |
申请公布日期 |
2006.08.15 |
申请号 |
US20030472269 |
申请日期 |
2003.09.18 |
申请人 |
SONY CORPORATION |
发明人 |
SABI YUICHI;IWAMURA TAKASHI;OYAMADA MITSUAKI;TAMADA SAKUYA |
分类号 |
G11B3/74;G11B7/00;G11B7/005;G11B7/24;G11B7/24038 |
主分类号 |
G11B3/74 |
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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