Document verification system
US6948657B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 9, 2003 |
| Grant date | Sep 27, 2005 |
| Priority date | — |
| Expiry date | Jan 13, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07F7/122
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
The present invention provides a document verification system capable of verifying whether a document is an original at low cost and with ease. A terminal device acquires, as a registered feature vector feature information indicating a feature of a nonreproducible disorder portion in a printing region on a document serving as the original, and stores the registered feature vector on a hard disk via the Internet. A server acquires, as a calculated feature vector the same information as the registered feature vector in a document to be verified as to whether the document is the original, reads out the registered feature vector from the hard disk, compares the acquired calculated feature vector with the read out registered feature vector, and verifies whether the document to be verified is the original on the basis of a result of the comparison.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.