| 发明名称 |
SECURE CORE MATERIAL FOR DOCUMENTS |
| 摘要 |
Addition of a covert attribute to a particle in a polymer matrix, such as a UV pigment or hidden layer of material, allows a covert, forensic characteristic and a mathematical description to be calculated adn then captured on it in the barcode (14), magnetic stripe or digital watermark on an ID document. |
| 申请公布号 |
WO2007038653(A3) |
申请公布日期 |
2007.06.07 |
| 申请号 |
WO2006US37787 |
申请日期 |
2006.09.26 |
| 申请人 |
DIGIMARC CORPORATION |
发明人 |
YEH, TUNG-FENG;RICHARDSON, JACK, T.;JONES, ROBERT, L. |
| 分类号 |
G06K19/00 |
主分类号 |
G06K19/00 |
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