Image processing circuit, image processing method, electro-optical device, and electronic apparatus
US7142182B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 18, 2002 |
| Grant date | Nov 28, 2006 |
| Priority date | — |
| Expiry date | Aug 26, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/04
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention provides an image processing circuit having a D/A converter that converts input image data Da to an analog signal to generate an image signal VID. The output range of the D/A converter is controlled by an output-range control signal CTLout having a different signal level according to the type of a liquid-crystal display panel used. Therefore, a range where the signal level of the image signal VID is changed can be adjusted according to the type of the liquid-crystal display panel. Consequently, even when an image-signal processing circuit is used with one of a plurality of types of liquid-crystal display panels having different V-T characteristics, since the data values of input image data Da can be assigned to a desired applied-voltage range, high-definition images can be displayed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.