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Color correcting method and device of display device

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

Active Publication Date: 2009-09-02
REALTEK SEMICON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
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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, see figure 2 This figure is a schematic diagram of the system architecture of the first embodiment in which the color correction device 2 performs color correction on the display device 3 according to the present invention. The color correction device 2 is adapted to adjust the conversion relationship between the input and output image signals of the display device 3, so that the image color and color temperature output by the display device 3 meet predetermined requirements.

[0031] Such as figure 2 As shown, 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 undergo signal conversion processing by the image processing unit 30, 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 corresponding module 34 respective...

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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 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 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 CIE XYZ; 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 a 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 invention relates to a color correction method, in particular to a color correction method of a display device and its related color correction device. Background technique [0002] With the rapid development of technology, the display devices on the market have been diversified. Common ones include picture tube TVs, LCD screens, plasma TVs and rear projection TVs. Since the imaging principles of various devices are not the same, the colors displayed are different. Therefore, how to improve the color reproduction performance of the display device is a topic that designers often think about. The signal processing for the color reproduction of the image signal of the display device includes the following two main items. [0003] First of all, various display devices have unique color display characteristics, and the color coordinates of the three primary colors of red, green, and blue that they display form a specific color gamut range in the color space....

Claims

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Application Information

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IPC IPC(8): G09G5/02G09G3/20H04N9/64
Inventor 吴彦兴谢俊兴
Owner REALTEK SEMICON CORP
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