Authentication of objects using steganography
US7508955B2 · kind B2 · utility
92Cited by
132References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 26, 2007 |
| Grant date | Mar 24, 2009 |
| Priority date | — |
| Expiry date | Oct 26, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2201/0052
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Steganographic methods for encoding auxiliary data into a host signal are used to authenticate physical and electronic objects. One claim recites an object comprising: a first graphic provided on an object surface, and a storage device carried by the object. The storage device includes a second graphic stored therein. The first and second graphics are related graphics, and the second graphic includes first steganographic encoding including a plural-bit payload. Of course, other combinations are provided as well.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.