Image display device and method of displaying image
US7505026B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 22, 2005 |
| Grant date | Mar 17, 2009 |
| Priority date | — |
| Expiry date | Jun 20, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2360/16
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
It is an object of the invention to provide an image display device for improving the image quality of moving images and still images displayed on a liquid crystal display device while controlling increase in power consumption. A liquid crystal panel for performing input image display and black image display at an arbitrary black display time ratio in one frame period, a movement detection unit for detecting a movement of the input image and outputting movement information, a display ratio control unit for fixing the black display time ratio based on the movement information, and a display brightness control unit for controlling brightness of the liquid crystal panel for one frame period to be substantially constant irrespective of the black display period are provided. The movement detection unit detects whether the input image is a moving image or a still image, and the display ratio control unit sets at least one transient black display time ratio between the black display time ratios for the moving image and the still image which is determined according to the result of the movement detection unit, so that the black display time ratio changes midway to the transient black displ…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.