Title:
EMBEDDED OPTICAL SIGNATURES IN DOCUMENTS
Document Type and Number:
WIPO Patent Application WO2006065565
Kind Code:
A3
Abstract:
A method of embedding an optical signature in a document (20) and document produced therefrom. The optical signature is an optica pattern (22) generated from a known value, such as a mathematical, geometric, trigonometric, size, phase, and the like, and the sam value can be generated from examination of a document having the embedded optical pattern (22). The document (20) can be validated, authenticated, or the determination of a valid copy of an original document with the embedded optical signature made through comparison of the known value and the value generated from the optical pattern (22) on the document (20). The optical pattern (22) can also be generated from other identification codes on the document (20).
Inventors:
FINNERTY FRED W (US)
STREETER GARY R (US)
IRWIN KENNETH E (US)
STREETER GARY R (US)
IRWIN KENNETH E (US)
Application Number:
PCT/US2005/043763
Publication Date:
December 21, 2006
Filing Date:
December 05, 2005
Export Citation:
Assignee:
SCIENT GAMES ROYALTY CORP (US)
International Classes:
G06K7/00; B42D15/00; G06F17/00; G06K7/10; G06K19/00; G06K19/06; G06K19/14; G07D7/00; G07D7/20
Foreign References:
| US6601772B1 | 2003-08-05 | |||
| US5769458A | 1998-06-23 | |||
| US5548110A | 1996-08-20 | |||
| US20020084335A1 | 2002-07-04 |
Other References:
See also references of EP 1825422A4
Download PDF: