发明名称 |
INFORMATION RECORDING MEDIUM,REPRODUCING DEVICE AND REPRODUCING METHOD |
摘要 |
An information recording medium according to the present invention includes at least three information recording layers. If the readout power of a laser beam in reading information from an information recording layer L(n) is identified by Pw(n), and if the readout power of the laser beam in reading information from an information recording layer L(n+a) is identified by Pw(n+a), then a base thickness between the information recording layers is determined so that the intensity of the light when the information recording layer L(n+a) is irradiated with a laser beam having the readout power Pw(n) becomes equal to or lower than that of the light when the information recording layer L(n+a) is irradiated with a laser beam having the readout power Pw(n+a). |
申请公布号 |
ZA201104623(B) |
申请公布日期 |
2012.11.28 |
申请号 |
ZA20110004623 |
申请日期 |
2011.06.22 |
申请人 |
PANASONIC CORPORATION |
发明人 |
NAKAO MASAHITO;KOMMA YOSHIAKI;SANO KOUSEI;HINO YASUMORI;YAMASAKI FUMITOMO |
分类号 |
G11B7/125;G11B7/24;G11B7/24038 |
主分类号 |
G11B7/125 |
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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