发明申请
- 专利标题： Information recording media, a method for recording/reproducing information, an apparatus for recording/reproducing information
- 专利标题（中）： 信息记录介质，记录/再现信息的方法，用于记录/再现信息的装置
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申请号： US11439337申请日： 2006-05-24
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公开(公告)号： US20060209648A1公开(公告)日： 2006-09-21
- 发明人: Akemi Hirotsune , Harukazu Miyamoto , Takeshi Maeda
- 申请人： Akemi Hirotsune , Harukazu Miyamoto , Takeshi Maeda
- 优先权： JP2000-309746 20001010
- 主分类号： G11B7/00
- IPC分类号： G11B7/00
摘要：
A method for determining layers in a recording medium having a plurality of layers for the recording and reproduction of information using light irradiation. Each of the plurality of layers includes an emboss portion and a wobble region having wobbles of a predetermined frequency. Layer determination is carried out based on the ratio of the amplitude of a wobble signal obtained from the wobble region to the amplitude of a reproduction signal from the emboss portion.
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