Graphical code readers that provide sequenced illumination for glare reduction
US8336778B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 19, 2008 |
| Grant date | Dec 25, 2012 |
| Priority date | — |
| Expiry date | Nov 22, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K7/10732
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A graphical code reader that provides sequenced illumination for glare reduction may include a plurality of light sources that illuminate a target area. The graphical code reader may also include at least one image sensor that captures an image of the target area using a rolling shutter technique. The graphical code reader may also include an illumination controller that sequences illumination of the light sources so that the light sources that are providing the normal component of the illumination to an active portion of the target area are turned off, and so that the light sources that are not providing the normal component of the illumination to the active portion of the target area are turned on.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.