发明名称 |
Optical pattern recognition system and method for verifying the authenticity of a person, product or thing |
摘要 |
A method of verifying the authenticity of an object is disclosed preferrably employing a joint transform coherent optical processor. An unreadable and hence non-counterfeitable phase mask is coupled to the object and the optical processor compares the phase mask with a reference phase mask having the same phase code thereon. The processor produces a correlation spot having an intensity which exceeds a given level if the phase mask is genuine. A highly secure ID or credit card also carries a fingerprint bonded to the phase mask, and the fingerprint on the card is compared to a reference fingerprint of the card holder for added security.
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申请公布号 |
US5485312(A) |
申请公布日期 |
1996.01.16 |
申请号 |
US19930127651 |
申请日期 |
1993.09.14 |
申请人 |
THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE AIR FORCE |
发明人 |
HORNER, JOSEPH L.;JAVIDI, BAHRAM;WALKUP, JOHN F. |
分类号 |
G06K9/00;G06K9/74;G07C9/00;(IPC1-7):G02B27/46;G06K9/76 |
主分类号 |
G06K9/00 |
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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