Method for acquiring backlight diffusion transmission parameter, display control method and display control device
US10809570B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jan 10, 2019 |
| Grant date | Oct 20, 2020 |
| Priority date | — |
| Expiry date | Jan 10, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2360/145
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method for acquiring backlight diffusion transmission parameter, a display control method and a display control device are provided. The method includes: selecting a plurality of backlight sources respectively arranged at different backlight regions of a display device and measuring a light diffusion data for each of the plurality of backlight sources, where the light diffusion data includes luminance values of a plurality of pixel points of a screen of the display device and a distance between a position of each pixel point and a position of a certain backlight source of the plurality of backlight sources in the case that only the certain backlight source is turned on; preprocessing the light diffusion data to determine effective pixel points of the plurality of pixel points; fitting the light diffusion data of the effective pixel points, to obtain a point spread function y=ƒ(x) indicating a relationship between y representing a diffusion luminance value and x representing a diffusion distance, where y representing a diffusion luminance value is a luminance value of each pixel point, and x representing a diffusion distance is a distance between a position of the each pixel point…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.