System and method for identifying a spatial code
US7441704B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 3, 2006 |
| Grant date | Oct 28, 2008 |
| Priority date | — |
| Expiry date | Mar 3, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K19/08
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system and method are provided for identifying a one- or multi-dimensional spatial code comprising a plurality of security tags with one or more characteristic emission profiles. The spatial codes are identified on the basis of the combined spatial and spectral information. The system for identifying such spatial codes is comprised of a beam source, a detector, and a processor. The method includes illuminating the code, recording the light emission at a plurality of wavelengths, decoding the spatial information, resolving the spectral profiles, and identifying the code based on the spatial and spectral information. The system and method are applicable to validating a spatial code.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.