Calibration of displays having spatially-variable backlight
US8471807B2 · kind B2 · utility
8Cited by
112References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 1, 2008 |
| Grant date | Jun 25, 2013 |
| Priority date | — |
| Expiry date | May 27, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2360/145
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A display has a screen which incorporates a light modulator. The screen may be a front projection screen or a rear-projection screen. The screen is illuminated with light from an illuminator comprising an array of individually-controllable light sources. The light sources and elements of the light modulator may be controlled to adjust the intensity and frequency of light emanating from corresponding areas on the screen. The display may be calibrated to compensate for differences in intensities of the light sources.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.