Method for controlling brightness of image subarea

A brightness control and image technology, applied in cathode ray tube indicators, optics, instruments, etc., can solve the problems that cannot meet the needs of users, the backlight module cannot display darker pattern details, and the display quality of liquid crystal display is reduced, etc., to achieve Effects of improving quality, improving contrast, and simplifying calculations

Inactive Publication Date: 2007-05-30
AU OPTRONICS CORP
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Problems solved by technology

[0006] Although the above method can make the backlight module stable and free from other noise interference, the backlight module cannot display details of darker p

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  • Method for controlling brightness of image subarea
  • Method for controlling brightness of image subarea
  • Method for controlling brightness of image subarea

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[0029] In order to enable your reviewer to have a further understanding and understanding of the structural features of the present invention and the achieved effects, the preferred embodiments and detailed descriptions are provided as follows:

[0030] Refer to Figure 1, which is a schematic diagram of the basic process of the present invention. As shown in the figure, the present invention is a method for controlling the brightness of image partitions. First, step S10 is performed to input a display image to a liquid crystal display, and then step S11 is performed to divide the display image into multiple blocks, and then step S12 is performed. Each block of the plurality of blocks has a plurality of pixels, each pixel of the plurality of pixels has a maximum color value, and the maximum color value of each pixel is subjected to a weighting operation, which means that the maximum color value of each pixel The color value is multiplied by a weighting factor, and the weighting fac...

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Abstract

The invention discloses a controlling method for the image partition brightness. Firstly inputs a display image; then the display image is divided into several blocks and the average brightness of every block is calculated, control the related block brightness according to the average brightness of every block, build an enquiry form to store several chromatic value and several weighted chromatic value, the form is built in the display, the brightness of every block could be controlled according to the form; the invention also can be used to control the brightness of light-emitting diode in a backlight module.

Description

technical field [0001] The invention relates to a brightness control method, in particular to an image partition brightness control method for controlling the brightness of an image displayed on a liquid crystal display. Background technique [0002] Currently, the contrast ratio of a liquid crystal display is an important factor for display image quality. However, a black background image is input to the liquid crystal display, and the liquid crystal display is not dark enough to display the black background image due to light leakage. Generally speaking, the contrast ratio of this LCD TV is about 10 3 , but compared with traditional CRT or PDP TV contrast is still insufficient. [0003] In order to improve the problem of insufficient contrast, a high dynamic contrast liquid crystal display system (HighDynamic Contrast LCD System) is proposed. 4 . Based on cost and mass production considerations, the image displayed by the liquid crystal display is divided into n x m bl...

Claims

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Application Information

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IPC IPC(8): G09G3/34G09G3/36G09G3/20G09G5/10G09G5/02G09G5/06G02F1/133G02F1/13357H04N9/64G02F1/1335
Inventor 汪德美蔡博仁
Owner AU OPTRONICS CORP
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