Marking and authenticating articles
US7220535B2 · kind B2 · utility
10Cited by
47References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 6, 2002 |
| Grant date | May 22, 2007 |
| Priority date | — |
| Expiry date | Jan 14, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/327
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Disclosed herein are methods and apparatus for providing markings upon objects, including the read side of an optical information media, where the markings do not substantially interfere with object, including the use of the optical information media. This invention discloses use of a coating, marking schemes, printing of markings with UV light, as well as methods and apparatus for reading and deciphering said marking. Included is an authentication scheme, where the marking may be used as a lock to limit access to information contained in an optical information media.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.