Machine-readable code format
US7328851B1 · kind B1 · utility
8Cited by
14References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 31, 2006 |
| Grant date | Feb 12, 2008 |
| Priority date | — |
| Expiry date | Oct 31, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K19/06046
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Disclosed is a machine readable code of a set of distinguishable symbols including at least a first symbol for encoding zeroes and a second symbol for encoding ones, wherein the first symbol exhibits a first color during machine reading and the second symbol exhibits a second color during machine reading, wherein the first color and the second color are detectably different under machine reading conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.