Image display device and image display method
US7053881B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 21, 2002 |
| Grant date | May 30, 2006 |
| Priority date | — |
| Expiry date | Jan 5, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2360/16
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image display device according to the present invention is capable of presenting to a viewer a high-quality lustrous video on a display screen with best screen brightness by increasing visual contrast and avoiding loss of true black elements without widening a dynamic range of a picture signal. The image display device is provided with a liquid crystal display portion (11), a display control portion (14), a backlight (12), a backlight control portion (13) and an average brightness detecting portion (15) and detects brightness of the light source in accordance with the average brightness of a picture signal to be displayed. It is further provided with a peak detecting portion (16) and corrects the control of the backlight control portion (13) in accordance with a detected peak value of a picture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.