发明名称 |
OPTICAL INFORMATION RECORDING MEDIUM |
摘要 |
Disclosed is an optical information recording medium that can solve a problem that a BCA mark becomes unrecognizable in an optical recording medium including a recording layer using an organic coloring matter. A playback signal in a burst cut area comprises a bright-area amplitude level formed upon the playback of a part where no barcode-shaped mark has been formed, a dark-area amplitude level formed upon the playback of a part where a barcode-shaped mark has been formed, and a maximum amplitude level having a protruded waveform formed upon the reproduction of the edge of a barcode-shaped mark. When a portion intermediate between the maximum amplitude level and the dark-part amplitude level is defined as an intermediate level, the intermediate level is lower than the bright-area amplitude level.
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申请公布号 |
EP2346043(A1) |
申请公布日期 |
2011.07.20 |
申请号 |
EP20090808241 |
申请日期 |
2009.08.10 |
申请人 |
TAIYO YUDEN CO., LTD. |
发明人 |
MATSUDA, ISAO;SHIMIZU, HIRONOBU |
分类号 |
G11B7/24;G11B7/007;G11B7/26 |
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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