Pseudorandom number generation apparatus, pseudorandom...

Image analysis – Applications – Personnel identification

Reexamination Certificate

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C382S116000, C382S117000, C382S118000, C382S124000, C382S125000, C382S126000, C382S127000, C382S128000, C382S130000, C382S131000, C382S132000

Reexamination Certificate

active

07835546

ABSTRACT:
The present invention allows a device to easily generate pseudorandom numbers using information about a living body. An imaging element outputs an image signal equivalent to imaging light reflecting a target of identification inside a certain part of a living body. The device extracts data from the image signal output from the imaging element. This data reflects a change arising from the living body and a change of the imaging element. The device then generates a pseudorandom number using the data as a seed. Specifically, to produce the seed, the device sequentially selects two image signals output from the imaging element as a pair, sequentially detects difference between the pair of image signals, recognizes one of the detected differences as criterion, and then calculates a degree of difference between the criterion and the rest of differences.

REFERENCES:
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patent: 5933502 (1999-08-01), Aucsmith et al.
patent: 6301375 (2001-10-01), Choi
patent: 7616785 (2009-11-01), Kondo et al.
patent: 2003/0086592 (2003-05-01), Takiguchi et al.
patent: 10505474 (1998-05-01), None
patent: 2000-165378 (2000-06-01), None
patent: 2001-051831 (2001-02-01), None
patent: WO96/08093 (1996-03-01), None
patent: WO 2005002441 (2005-01-01), None
Japanese Office Action issued on Feb. 18, 2010 for corresponding Japanese Patent Application No. JP2005-129751.

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