| 发明名称 |
COPY-PROTECTED OPTICAL MEDIA AND METHOD OF MANUFACTURE THEREOF |
| 摘要 |
<p>A method for fabricating read-only copy protected optical medium comprising: a substrate (54) having information pits (18) and lands (16) thereon and a lig ht sensitive material (56) placed at a position capable of altering the data reading during copying of the optical medium but permitting read of the underlying data in the reading of the optical medium.</p> |
| 申请公布号 |
CA2415094(A1) |
申请公布日期 |
2002.01.10 |
| 申请号 |
CA20012415094 |
申请日期 |
2001.06.29 |
| 申请人 |
VERIFICATION TECHNOLOGIES, INC. |
发明人 |
SELINFREUND, RICHARD H.;VIG, RAKESH;DREW, JEFFREY M.;GOYETTE, DONALD R. |
| 分类号 |
G11B7/007;G11B7/24;G11B7/243;G11B7/246;G11B7/257;G11B7/26;G11B19/04;G11B19/12;G11B20/00;G11B23/28;(IPC1-7):G11B3/70;G11B3/24;B32B3/02 |
主分类号 |
G11B7/007 |
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