发明授权
US07586829B2 Multilayer optical recording medium having plurality of reflecting units formed on parts recording layers
失效
多层光学记录介质，其具有形成在部件记录层上的多个反射单元
- 专利标题： Multilayer optical recording medium having plurality of reflecting units formed on parts recording layers
- 专利标题（中）： 多层光学记录介质，其具有形成在部件记录层上的多个反射单元
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申请号： US10967331申请日： 2004-10-19
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公开(公告)号： US07586829B2公开(公告)日： 2009-09-08
- 发明人: Masakazu Ogasawara
- 申请人： Masakazu Ogasawara
- 申请人地址： JP Tokyo
- 专利权人： Pioneer Corporation
- 当前专利权人： Pioneer Corporation
- 当前专利权人地址： JP Tokyo
- 代理机构： Foley & Lardner LLP
- 优先权： JP2003-360037 20031020
- 主分类号： G11B7/24
- IPC分类号： G11B7/24
摘要：
A multilayer optical recording medium includes a plurality of recording layers that are laminated and have recording layer forming units into which information is recorded. Reflective film forming units are formed on parts of the respective recording layers and have a reflectance ratio sufficient to make a servo loop of a focus servo into a servo close condition. Reflective film forming units of the respective recording layers are arranged at respectively different positions.
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