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Color correcting method and device of display device

A display device and color correction technology, applied in the field of color correction, can solve problems such as the inability to reach the color temperature range

Active Publication Date: 2011-04-27
REALTEK SEMICON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this kind of color correction procedure is a non-linear RGB gain adjustment for all-white images, which will make only the all-white images reach the target color temperature range in the end, while the rest of the gray scales cannot reach the target color temperature range

Method used

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  • Color correcting method and device of display device
  • Color correcting method and device of display device
  • Color correcting method and device of display device

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Embodiment Construction

[0030] First, please refer to FIG. 2 , which is a schematic diagram of the system architecture of the first embodiment of the color correction performed by the color correction device 2 on the display device 3 disclosed in the present invention. The color correction device 2 is adapted to adjust the conversion relationship of the input and output image signals of the display device 3 so that the color and color temperature of the picture output by the display device 3 meet predetermined requirements.

[0031] As shown in FIG. 2 , the display device 3 has a panel 36 and an image processing unit 30 . The image signal input to the display device 3 from the outside will first be processed by the image processing unit 30 for signal conversion, and then output to the panel 36 for display. The image processing unit 30 further includes a Gamma conversion module 32 and a color gamut corresponding module 34 . The Gamma conversion module 32 and the color gamut correspondence module 34 a...

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Abstract

The invention discloses a color correcting method of a display device, which is applicable to the output color adjustment of the display device. The color correcting method consists of the steps as foThe invention discloses a color correcting method of a display device, which is applicable to the output color adjustment of the display device. The color correcting method consists of the steps as follows: firstly, multiple images are displayed on a panel of the display device, and chromatic values and brightness values of the images are measured, thus obtaining the color displaying characteristillows: firstly, multiple images are displayed on a panel of the display device, and chromatic values and brightness values of the images are measured, thus obtaining the color displaying characteristics of the display device; secondly, according to the color displaying characteristics, a corresponding color matrix is generated, wherein the color matrix is positioned in a linear color space of CIEcs of the display device; secondly, according to the color displaying characteristics, a corresponding color matrix is generated, wherein the color matrix is positioned in a linear color space of CIEXYZ; thirdly, the color matrix and a gain matrix are computed so as to output an output matrix; fourthly, the gain matrix is adjusted so as to lead the output matrix to be essentially the same with aXYZ; thirdly, the color matrix and a gain matrix are computed so as to output an output matrix; fourthly, the gain matrix is adjusted so as to lead the output matrix to be essentially the same with atarget matrix; finally, by referring to element values that are obtained by the adjusted gain matrix, the display device is set, thus correcting the output color of the display device.target matrix; finally, by referring to element values that are obtained by the adjusted gain matrix, the display device is set, thus correcting the output color of the display device.

Description

technical field [0001] The present invention relates to a color correction method, in particular to a color correction method for a display device and a related color correction device. Background technique [0002] With the rapid development of technology, the display devices on the market have been diversified, such as CRT TVs, LCD screens, plasma TVs and rear projection TVs. Due to the different imaging principles of various devices, the displayed colors are different. Therefore, how to improve the color reproduction performance of the display device is a subject often considered by designers. Signal processing for color reproduction of an image signal of a display device includes the following two main items. [0003] Firstly, various display devices have unique color display characteristics, and the color coordinates of the red, green and blue primary color images displayed by them construct a specific color gamut range in the color space. In order to achieve the cor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/20G09G5/02H04N9/64
Inventor 吴彦兴谢俊兴
Owner REALTEK SEMICON CORP
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