| 发明名称 |
METHOD AND SYSTEM FOR OPTICAL DISC COPY-PROTECTION. |
| 摘要 |
<p>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 information lands (10) and an optically-changeable security material (16) is applied over the reflective layer (12).</p> |
| 申请公布号 |
MXPA04003991(A) |
申请公布日期 |
2005.01.25 |
| 申请号 |
MX2004PA03991 |
申请日期 |
2003.02.06 |
| 申请人 |
VERIFICATION TECHNOLOGIES, INC. |
发明人 |
JUNZHONG LI |
| 分类号 |
G11B7/24;G11B7/005;G11B7/007;G11B7/26;G11B19/12;G11B20/00;G11B23/28;(IPC1-7):B29D17/00;G11B7/00 |
主分类号 |
G11B7/24 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
