Power calibration of multiple light sources in a display screen
US8947410B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 6, 2011 |
| Grant date | Feb 3, 2015 |
| Priority date | — |
| Expiry date | Sep 24, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2360/147
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A display device with multiple light sources includes a first detector for detecting a brightness of one or more different portions of the image formed on the display device, a second detector that measures output intensities of the light sources, and a controller that records correlation values that correlate input power settings of the light sources with the detected brightness and the measured output intensities. During operation of the display device, the controller applies the correlation values to determine the proper input power settings of the light sources so that brightness uniformity among the multiple light sources can be achieved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.