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Selective overdriving method and apparatus thereof

An overdrive and selective technology, applied to instruments, static indicators, etc., can solve problems such as blue-purple edges on the edge of the face and problems with the color mixing ratio of the screen

Inactive Publication Date: 2013-06-12
INNOLUX CORP
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Problems solved by technology

[0004] Furthermore, if overdrive is used in the full gray scale enhancement mode, unexpected colors will often appear on the edges of moving objects in dynamic images. Unexpected mixed color edges may occur in daily images, such as people at night Blue-purple edges are easy to appear on the edge of the face. The reason is color mixing. If the enhanced overdrive method is used for the entire picture, it will often cause problems with the color mixing ratio of the picture, as shown in Figure 2

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  • Selective overdriving method and apparatus thereof
  • Selective overdriving method and apparatus thereof
  • Selective overdriving method and apparatus thereof

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[0045] The invention discloses a selective overdrive method and its device, which store a standard mode overdrive comparison table and an enhanced mode overdrive comparison table in the overdrive comparison unit at the same time, so as to compare the pixels of the current picture and the previous picture. One of the two is selected for the gray scale value of the pixel, so as to selectively perform effective edge enhancement or brightness enhancement of the dynamic image without unintended color shift as in the prior art.

[0046]When performing overdrive, according to the pixel grayscale value corresponding to each pixel in the current picture, the overdrive grayscale value is obtained, image 3 It is a flow chart of the selective overdrive method of the present invention. As shown in the figure, firstly, as shown in step S10, first mark whether the pixel grayscale value of each picture pixel needs image enhancement (overdrive) The gray-like or pure-like color, which is a colo...

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Abstract

The invention relates to a selective overdriving method and a device thereof. The method comprises the following steps: generating a selection signal according to whether the gray-level value of a pixel of the current image and the gray-level value of a corresponding pixel of the previous image meet the grey color or the pure color conditions; and selectively referring a standard mode overdrivingreference list or an enhanced mode overdriving reference list inside an overdriving reference unit by using the gray-level value of the pixels in the current image and the previous image according tothe selection signal, and outputting a set of corresponding overdriving gray-level values.

Description

technical field [0001] The invention relates to an overdrive technology of a liquid crystal display, in particular to a selective overdrive method and a device thereof which can select an output mode according to a dynamic image. Background technique [0002] In the liquid crystal display, the characteristics of the liquid crystal material itself are mainly used to realize the display purpose. However, if the response time of the liquid crystal is too long, the edge of the dynamic image will easily appear blurred. Response time required for pixel grayscale. [0003] The overdrive method is to set the image voltage of a pixel higher than the actual voltage during the process of applying voltage, and then return to the original voltage to use the large voltage of the pixel to generate a larger torque to force the liquid crystal in a shorter time. The internal change of alignment is converted into the set transmittance, thereby accelerating the response time of the entire liq...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/36G09G3/20G02F1/133
Inventor 陈宥烨彭国轩谢明峰黄汉忠庄怡芬李俊明
Owner INNOLUX CORP