Method of controlling exposure on barcode imaging scanner with rolling shutter sensor
US9734375B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 26, 2013 |
| Grant date | Aug 15, 2017 |
| Priority date | — |
| Expiry date | Nov 10, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K7/10732
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method includes the following (1) detecting light returned from a target with an imaging sensor during a first frame exposure time period to capture a first image when a first illumination light is projected towards the target; (2) processing the first image to determine the light intensity of a second illumination light; (3) detecting light returned from the target with the imaging sensor during a second frame exposure time period to capture a second image when the second illumination light is projected towards the target; and (4) decoding a barcode in the second image. The light intensity of the first illumination light changes with time at least during part of the first frame exposure time period.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.