US 7,321,678 B2 | ||
Banknote identifying machine and banknote identifying method | ||
Eiji Itako, Sakado (Japan) | ||
Assigned to Kabushiki Kaisha Nippon Conlux, Tokyo (Japan) | ||
Appl. No. 10/470,745 PCT Filed Nov. 11, 2002, PCT No. PCT/JP02/11724 § 371(c)(1), (2), (4) Date Aug. 11, 2003, PCT Pub. No. WO03/050772, PCT Pub. Date Jun. 19, 2003. |
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Claims priority of application No. 2001-380106 (JP), filed on Dec. 13, 2001. | ||
Prior Publication US 2004/0151359 A1, Aug. 05, 2004 | ||
Int. Cl. G06K 9/00 (2006.01) |
U.S. Cl. 382—137 [382/138; 382/139; 382/140] | 9 Claims |
1. A banknote identifying machine, comprising:
detecting means which scans a banknote being transported and irradiates light to the banknote to detect an amount of light
transmitted through the banknote; and
judging means which determines whether the banknote is authentic based on a relative value between an amount of transmitted
light through a watermark portion of the banknote detected by the detecting means and an amount of transmitted light through
ordinary design portions other than the watermark portion.
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