发明名称 |
Optical information recording medium, recording and readout methods using the same, optical information recording device, and optical information readout device |
摘要 |
An optical information recording medium includes a substrate formed in a concave-convex state by providing pits or grooves corresponding to recorded information, used for optically reproducing the information by irradiation of a light beam, and may also include a recording layer. The optical information recording medium includes a temperature responsive layer 21 whose reflectance and/or transmittance for the light beam changes with an increase in temperature caused by the irradiation of a light beam and a light absorption layer 22. With such an arrangement, the present invention provides an optical information recording medium enabling secure and highly accurate readout of information recorded with high density, a recording method and a readout method using the same, a readout device, and a recording device. |
申请公布号 |
EP1484757(A3) |
申请公布日期 |
2006.05.24 |
申请号 |
EP20040007443 |
申请日期 |
2004.03.26 |
申请人 |
SHARP KABUSHIKI KAISHA |
发明人 |
TAKAMORI, NOBUYUKI;TAJIMA, HIDEHARU;MORI, GO;YAMAMOTO, MASAKI |
分类号 |
G11B7/24;G11B7/0045;G11B7/005;G11B7/243;G11B7/257;G11B11/105 |
主分类号 |
G11B7/24 |
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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