Driving apparatus of display device for gray range extension, display device including the same, and method of driving display device for gray range extension
US8035661B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Dec 10, 2007 |
| Grant date | Oct 11, 2011 |
| Priority date | — |
| Expiry date | Aug 9, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2360/16
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The driving apparatus of a display device calculates a slope using a minimum gray, a maximum gray, a gray average of frame data in a current frame, and a gray average of frame data in a previous frame, and corrects and outputs the input frame data according to the slope, using frame data of one frame. As a result, a gray range of the input image signal can be extended, thereby improving visibility. Further, in a case of a motion picture, even when a difference of a gray range of images of adjacent frames is large, an original image is not distorted due to extension of a gray range. Also, even when noise is included in the input image signal, a gray range can be extended after removing the noise.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.