发明名称 |
Holographic storage data on credit type card |
摘要 |
The card has confidential information stored in the form of micro sized holographic dots that are read using monochromatic coherent light. The hologram is of a laser transmission type or Fourier hologram type. The dots are used to create a decorative two dimensional symbol on the surface of the card and the symbol provides a high density memory capacity.
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申请公布号 |
DE19612819(A1) |
申请公布日期 |
1997.10.02 |
申请号 |
DE1996112819 |
申请日期 |
1996.03.30 |
申请人 |
BRINCKMANN, WILLI, 25337 ELMSHORN, DE |
发明人 |
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分类号 |
B42D25/328;G03H1/02;G06K19/06;G06K19/16;G07D7/12;G07F7/08;(IPC1-7):B44F1/12;G07D7/00 |
主分类号 |
B42D25/328 |
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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