Method and apparatus for scanning electronic barcodes
US6749120B2 · kind B2 · utility
136Cited by
18References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 11, 2000 |
| Grant date | Jun 15, 2004 |
| Priority date | — |
| Expiry date | Feb 17, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K7/1095
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A scanner is provided that can read two-dimensional barcodes from reflective or emissive electronic displays. Illumination, exposure, and contrast can be automatically adjusted according to the type of display and variations in brightness or reflectivity. The scanner includes an imaging camera with high spectral response for reading from color displays. The scanner can also adapt to read barcodes from displays with non-square pixels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.