发明名称 |
Optical information medium measurement method, optical information method, optical information medium, recording apparatus, and reproducing apparatus |
摘要 |
Described is an optical information medium measurement method of measuring a degree of modulation in an optical information medium of a multilayered structure having a plurality of information layers. The method includes measuring the modulation degree of each layer of the optical information medium, by use of a measurement optical system, obtaining a thickness between layers of the optical information medium, obtaining a reflectance of each layer of the optical information medium, and converting the measured modulation degree of each layer into a modulation degree at a reference optical system differing from the measurement optical system, based on a value indicative of the obtained thickness between layers and a value indicative of the obtained reflectance of each layer. |
申请公布号 |
US8295150(B2) |
申请公布日期 |
2012.10.23 |
申请号 |
US201113071914 |
申请日期 |
2011.03.25 |
申请人 |
SANO KOUSEI;KOMMA YOSHIAKI;HINO YASUMORI;PANASONIC CORPORATION |
发明人 |
SANO KOUSEI;KOMMA YOSHIAKI;HINO YASUMORI |
分类号 |
G11B3/70;B32B3/02;G01B9/02;G01B11/28;G11B7/00 |
主分类号 |
G11B3/70 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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