发明申请
- 专利标题： OPTICAL INFORMATION MEDIUM MEASUREMENT METHOD, OPTICAL INFORMATION METHOD, OPTICAL INFORMATION MEDIUM, RECORDING APPARATUS, AND REPRODUCING APPARATUS
- 专利标题（中）： 光学信息中度测量方法，光学信息方法，光学信息介质，记录装置和再现装置
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申请号： US13071914申请日： 2011-03-25
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公开(公告)号： US20110170389A1公开(公告)日： 2011-07-14
- 发明人: Kousei Sano , Yoshiaki Komma , Yasumori Hino
- 申请人： Kousei Sano , Yoshiaki Komma , Yasumori Hino
- 优先权： JP2008-311332 20081205
- 主分类号： G11B7/00
- IPC分类号： G11B7/00
摘要：
An optical information medium measurement method of the present invention, for measuring a degree of modulation in an optical information medium of a multilayered structure having a plurality of information layers, includes a first step of measuring the modulation degree of each layer of the optical information medium, by use of a measurement optical system, a second step of obtaining a thickness between layers of the optical information medium, a third step of obtaining a reflectance of each layer of the optical information medium, and a fourth step of converting the modulation degree of each layer, the modulation degree being measured in the first step, into a modulation degree at a reference optical system differing from the measurement optical system, based on a value indicative of the thickness between layers, the thickness being obtained in the second step, and a value indicative of the reflectance of each layer, the reflectance being obtained in the third step.
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