发明申请
- 专利标题: OPTICAL RECORDING MEDIUM AND OPTICAL RECORDING-READING METHOD
- 专利标题(中): 光学记录介质和光学记录读取方法
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申请号: US13032203申请日: 2011-02-22
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公开(公告)号: US20110205868A1公开(公告)日: 2011-08-25
- 发明人: Motohiro Inoue , Takashi Kikukawa , Atsuko Kosuda , Hideki Hirata
- 申请人: Motohiro Inoue , Takashi Kikukawa , Atsuko Kosuda , Hideki Hirata
- 优先权: JP2010-035809 20100222
- 主分类号: G11B7/24
- IPC分类号: G11B7/24 ; G11B7/09
摘要:
Efficient recording and reading are achieved in an optical recording medium including servo layers and recording and reading layers. The optical recording medium includes: a first servo layer having a projection and a depression for tracking control that are formed in a first spiral direction; a second servo layer having a projection and a depression for tracking control that are formed in a second spiral direction opposite to the first spiral direction; and a plurality of recording and reading layers having a flat structure with no projection and depression for tracking control. Information is recorded on each of the plurality of recording and reading layers while tracking control is performed using the first servo layer or the second servo layer.
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