Device for authenticating a security document
US6394358B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 14, 2000 |
| Grant date | May 28, 2002 |
| Priority date | — |
| Expiry date | Mar 14, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07D7/206
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A security document and a device for authenticating the security document are provided. The device for authenticating the security document comprises an optical imaging device and a specially programmed controller. The security document comprises a unique combination of covert triggers, overt triggers, and overt secure document indicators arranged to enhance the security of the document at issue and enable high speed machine authentication of the document at issue. In accordance with one embodiment of the present invention, a device for authenticating a security document is provided. The security document includes a security image printed on a face thereof. The security image is defined by a collection of security image elements and defines at least one document authentication scheme. The document authentication scheme is arranged to provide a primary indication of document authenticity. The authentication device comprises an optical imaging device and a specially programmed controller. The optical imaging device is arranged to generate a security image signal representative of at least a portion of the security image. The controller is programmed to (i) define an authentication co…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.