Image compensation method for side-emitting backlight and LCD apparatus with the same
US9218771B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 16, 2012 |
| Grant date | Dec 22, 2015 |
| Priority date | — |
| Expiry date | Dec 11, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/0646
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present application provides a an image compensation method for side-emitting backlight comprising steps of: S1, dividing the display screen into several regions; S2, arranging virtual light sources at one side of each region where actual light sources are located for imitating the actual light sources; S3, inputting a pixel value and a coordinate of the point to be compensated; S4, computing a ratio value between an all-full-lighting backlight brightness of the point to be compensated when fully lighted and an all-reduced backlight brightness of the point to be compensated when reduced in brightness; S5, obtaining a compensation factor of the point to be compensated, according to the ratio value; S6, compensating the pixel value of the point to be compensated by using the compensation factor; S7, determining whether all the points to be compensated in the image to be compensated have been compensated or not.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.