| 发明名称 |
METHOD AND SYSTEM FOR OPTICAL DISC COPY-PROTECTION |
| 摘要 |
A method and system for providing copy-protected optical medium using a substrate having information stored therein in information pits (5) and information lands (10, 11), wherein the information lands (10,11) comprise lands in two different planes. A reflective layer (12) covers the informatio n lands (10) and an optically-changeable security material (16) is applied ove r the reflective layer (12).
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| 申请公布号 |
CA2464808(A1) |
申请公布日期 |
2003.08.14 |
| 申请号 |
CA20032464808 |
申请日期 |
2003.02.06 |
| 申请人 |
VERIFICATION TECHNOLOGIES, INC. |
发明人 |
VIG, RAKESH;SELINFREUND, RICHARD H.;MILLER, PETER;LI, JUNZHONG |
| 分类号 |
G11B7/24;G11B7/005;G11B7/007;G11B7/26;G11B19/12;G11B20/00;G11B23/28;(IPC1-7):G11B7/00;B29D17/00 |
主分类号 |
G11B7/24 |
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