发明名称 |
Laser reactive dyes for DVD copy protection system |
摘要 |
A method and system for providing copy-protected optical medium using transient optical state change security materials capable of changing optical state when exposed to a wavelength of about 630 nm to about 660 nm and software code to detect such change in optical state.
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申请公布号 |
US2005186382(A1) |
申请公布日期 |
2005.08.25 |
申请号 |
US20050113516 |
申请日期 |
2005.04.25 |
申请人 |
VERIFICATION TECHNOLOGIES, INC. |
发明人 |
VIG RAKESH;GERGER SCOTT;SELINFREUND RICHARD H.;MILLER PETER;LI JUNZHONG;COOK EWELL;SAGLIMBENI ANTHONY A. |
分类号 |
B29D17/00;B32B3/02;G02B;G11B7/24;(IPC1-7):B32B3/02 |
主分类号 |
B29D17/00 |
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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