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Gamma curve compensation method, gamma curve compensation circuit and display system

A display system, gamma curve technology, applied in cathode ray tube indicators, static indicators, instruments, etc., can solve the problem of uneven brightness and darkness of the picture, and achieve the effect of improving display performance

Active Publication Date: 2012-07-04
AU OPTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Although, in the process of dynamically inserting gray scale, different gamma (Gamma) output will be obtained by inserting different gray scale values, resulting in uneven brightness and dark parts of the picture, and even the same color will appear in different areas. get different color output

Method used

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  • Gamma curve compensation method, gamma curve compensation circuit and display system
  • Gamma curve compensation method, gamma curve compensation circuit and display system
  • Gamma curve compensation method, gamma curve compensation circuit and display system

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Embodiment Construction

[0037] Please refer to figure 1 , which is a circuit block diagram of the display system 10 according to an embodiment of the present invention. In this embodiment, the display system 10 includes a power supply 11 , an image receiving terminal 13 , a gamma curve compensation circuit 15 and a display screen 17 . The power supply 11 provides power for the display system 10 to operate, the image receiving terminal 13 is used for receiving input image signals, and the display screen 17 is used for displaying images.

[0038] The gamma curve compensation circuit 15 includes an interpolation grayscale determination circuit 150 , an image generation circuit 152 , a multiplexer 154 and a search and compensation circuit 156 . Wherein, the insertion grayscale determination circuit 150 determines the grayscale brightness of the grayscale image to be inserted according to the input image signal, and outputs the grayscale image after determining the grayscale brightness. The image genera...

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PUM

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Abstract

The invention provides a gamma curve compensation method, a gamma curve compensation circuit and a display system which are suitable for the display system to insert a plurality of grey scale images during the display process to adjust the display effect of the display system, the gray scale brightness of each grey scale image is one of a plurality of grey scale values. The gamma curve compensation methods contains: provide a plurality of corresponding lookup tables aiming at different grey scale values; when a specific grey scale value of the plurality of grey scale values is selected to form one of the grey scale images, select a specific lookup table corresponding to the specific grey scale value from the lookup tables, and take the specific lookup table as the basis of the gamma curvecompensation so as to cause the gamma curve of the display system to remain unchanged during the display process. The invention also provides the gamma curve compensation circuit and the display system to execute the method.

Description

technical field [0001] The invention relates to an image display technology, and in particular to a pulse-driven display system and its gamma curve compensation method and circuit. Background technique [0002] At present, one of the main ways to solve the motion blur (Motion Blur) phenomenon of the dynamic image of the liquid crystal display system is the impulse-type driving (Impulse-type Driving), that is, the fixed black insertion (BlackInsertion) technology. However, in the impulsive driving method, the fixed black insertion (Black Insertion) technology will cause the screen brightness to attenuate (Luminance Decay) and cause obvious flicker (Flicker) problems. In addition, the response time of liquid crystal is not linear when pulling up from zero grayscale. When the initial grayscale is a lower grayscale, the pull-up time is much longer than that of other higher grayscales, which is not conducive to improving Smear (ghost) phenomenon. [0003] In order to improve th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/36G09G3/34G09G5/06G09G5/10
Inventor 廖上嘉何宇玺谢曜任
Owner AU OPTRONICS CORP