发明名称 |
An optical disk with an optical barcode |
摘要 |
<p>Disclosed is an optical disk barcode forming method wherein, as information to be barcoded, position information for piracy prevention, which is a form of ID, is coded as a barcode and is recorded by laser trimming on a reflective film in a PCA area of an optical disk. When playing back the thus manufactured optical disk on a reproduction apparatus, the barcode data can be played back using the same optical pickup.</p> |
申请公布号 |
EP1251502(A1) |
申请公布日期 |
2002.10.23 |
申请号 |
EP20020015195 |
申请日期 |
1996.05.15 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
GOTOH, YOSHIHO;KOISHI, KENJI;OSHIMA, MITSUAKI;MORIYA, MITSURO;TANAKA, SHINICHI |
分类号 |
G11B7/24;G06F1/00;G06K1/12;G06K19/04;G06K19/06;G06K19/08;G06K19/14;G11B5/86;G11B7/00;G11B7/0037;G11B7/004;G11B7/005;G11B7/0055;G11B7/007;G11B7/09;G11B7/26;G11B13/04;G11B19/04;G11B19/06;G11B19/12;G11B20/00;G11B20/10;G11B20/12;G11B20/14;G11B20/18;G11B23/00;G11B23/28;G11B23/30;G11B23/38;G11B27/24;H04L9/10;(IPC1-7):G11B20/12 |
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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