&ggr; Correction system and method utilizing graph approximation
US6340996B1 · kind B1 · utility
8Cited by
10References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 5, 1999 |
| Grant date | Jan 22, 2002 |
| Priority date | — |
| Expiry date | Oct 5, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/0666
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A display device has a &ggr; correction circuit based on line graph approximation. A memory stores &ggr; characteristic data of the display device. The &ggr; characteristic value, white level value, contrast value and black level value are input for adjusting the luminance characteristics of input video signals. A &ggr; conversion section sets a slope and intercept of the &ggr; correction so that the input video signal data can be converted to ideal output luminance value of the display.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.