发明申请
- 专利标题: Optical recording medium, information recording or reproducing method, and information recording or reproducing apparatus
- 专利标题(中): 光记录介质,信息记录或再现方法以及信息记录或再现装置
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申请号: US11907186申请日: 2007-10-10
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公开(公告)号: US20080109837A1公开(公告)日: 2008-05-08
- 发明人: Joji Anzai , Hideki Aikoh , Kousei Sano , Eishin Mori
- 申请人: Joji Anzai , Hideki Aikoh , Kousei Sano , Eishin Mori
- 优先权: JP2006-276498 20061010
- 主分类号: G11B7/24
- IPC分类号: G11B7/24
摘要:
An optical recording medium improves the quality of servo signals and readout signals by preventing light convergence on the back of the surface of the optical recording medium and reducing interference of light reflected from recording surfaces of the optical recording medium. An optical recording medium 40 includes at least three information recording surfaces, and satisfies d1
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