Reflective decoders for use in decoding optically encoded images
US7487915B2 · kind B2 · utility
5Cited by
2References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 25, 2006 |
| Grant date | Feb 10, 2009 |
| Priority date | — |
| Expiry date | Oct 19, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07D7/207
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A reflective decoding device is provided for use in decoding an encoded image comprising a latent image encoded using at least one encoding parameter. The device comprises a substrate with a reflective surface portion having a surface topography comprising a predetermined pattern of topographical features. The predetermined pattern is configured with at least one geometric characteristic corresponding to the at least one encoding parameter so that placement of a light-transmissive sheet having the encoded image formed thereon over the predetermined pattern of topographical features allows the latent image to be viewed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.