Dual resolution two-dimensional barcode
US8500026B2 · kind B2 · utility
3Cited by
1References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 6, 2011 |
| Grant date | Aug 6, 2013 |
| Priority date | — |
| Expiry date | Dec 19, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K19/06037
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A grayscale two-dimensional barcode may be converted to a two-dimensional color barcode. The color barcode includes a set of sub-regions, and the cells in each sub-region exhibits a color pattern that corresponds to pattern of binary, grayscale cells. The two-dimensional color barcode may be decoded by comparing the pattern for each sub-region to a known grayscale pattern. The two-dimensional color barcode may be used for error correction by first decoding the barcode in grayscale form based on the luminance without reference to color, then decoding the barcode based on its color and comparing the results.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.