发明名称 |
REWRITABLE DATA STORAGE MEDIUM |
摘要 |
<p>The rewritable data storage medium ( 1 ) has a rewritable recording layer ( 9 ) provided with a tracking structure ( 8 ). Said layer ( 9 ) has a data recording area ( 5 ). An erasable identification mark is present in an identification mark area ( 4, 4' ) other than the data recording area ( 5 ). The data recording area ( 5 ) has a first tracking structure ( 8' ), whereas the identification mark area ( 4, 4' ) is substantially free from a tracking structure or has a second tracking structure ( 8'' ) substantially different from the first tracking structure ( 8' ). Thus erasure of the identification mark is practically impossible, because the location of the erasing spot of a recorder cannot be controlled precisely in radial direction.</p> |
申请公布号 |
EP1190419(A2) |
申请公布日期 |
2002.03.27 |
申请号 |
EP20010915224 |
申请日期 |
2001.02.09 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS N.V. |
发明人 |
SPRUIT, JOHANNES, H., M.;TALSTRA, JOHAN, C.;BRONDIJK, ROBERT, A.;DRENTEN, RONALD, R. |
分类号 |
G06F3/06;G06F3/08;G11B7/007;G11B7/24;G11B11/00;G11B19/02;G11B20/00;G11B20/12;(IPC1-7):G11B11/00 |
主分类号 |
G06F3/06 |
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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