Techniques for printing with integrated paper sheet identification
US7731435B2 · kind B2 · utility
48Cited by
6References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 28, 2006 |
| Grant date | Jun 8, 2010 |
| Priority date | — |
| Expiry date | Aug 27, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V20/80
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A printing method and apparatus includes fingerprinting a sheet of printable media such as paper to obtain a fingerprint. The fingerprint is encrypted using an encryption key known only to the user wanting to print the document. The encrypted fingerprint is then encoded and transferred to the document as machine readable information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.