Adaptive smoothing of backlight to reduce flicker
US8659535B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 16, 2008 |
| Grant date | Feb 25, 2014 |
| Priority date | — |
| Expiry date | Aug 29, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/103
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for adaptively controlling the backlight to reduce flicker in a display is provided. The apparatus includes a display, a backlight providing illumination for said display, a backlight control module for providing backlight control signals to said backlight, and an adaptive transition rate module. The module calculates an adaptive parameter based on a magnitude of change between backlight requirements for two frames, determining a smoothing function based on the adaptive parameter, and using said smoothing function to modify said backlight control signals. Techniques for adaptively controlling the illumination of the backlight according to the difference in the illumination levels of two different sets of image data are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.