Gamma curve adjustment method and gamma curve adjustment apparatus
US9704425B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Sep 26, 2013 |
| Grant date | Jul 11, 2017 |
| Priority date | — |
| Expiry date | Nov 14, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/0673
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A Gamma curve adjustment method and a Gamma curve adjustment apparatus for a display apparatus. The method includes: obtaining correspondence relationship between current grayscale voltages and first transmittances of the display apparatus, the first transmittances being the transmittances of the display apparatus driving by the current grayscale voltages; determining a target grayscale voltage corresponding to each gray scale based on the correspondence relationship between the current grayscale voltages and the first transmittances and an ideal Gamma curve; generating and outputting the target grayscale voltage corresponding to each gray scale to the display apparatus; and obtaining an actual Gamma curve of the display apparatus driven by the target grayscale voltages as a final Gamma curve. The Gamma curve adjustment method improves the speed and efficiency of adjusting the Gamma curve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.