发明名称 |
Transient optical state change materials useful in copy-protected compact discs |
摘要 |
A copy-protected optical medium comprising transient optical state change security materials that demonstrating an optical state change when exposed to the wavelengths of from about 770 nm to about 830 nm.
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申请公布号 |
US7344823(B2) |
申请公布日期 |
2008.03.18 |
申请号 |
US20030672052 |
申请日期 |
2003.09.26 |
申请人 |
VERIFICATION TECHNOLOGIES, INC. |
发明人 |
SELINFREUND RICHARD H.;GERGER SCOTT;VIG RAKESH;LI JUNZHONG |
分类号 |
G11B7/24;C07D279/18;G02B;H04L9/32 |
主分类号 |
G11B7/24 |
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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