LCD display gamma correction system and method

A liquid crystal display and gamma correction technology, which is applied to static indicators, instruments, etc., can solve problems such as manual gamma correction, and achieve the effect of reducing correction time and production costs

Inactive Publication Date: 2008-07-02
INNOCOM TECH SHENZHEN +1
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AI Technical Summary

Problems solved by technology

[0013] In order to solve the problem that the prior art liquid crystal display gamma correction system needs manual gamma correction, it is necessary to provide a liquid crystal display gamma correction system that can automatically perform gamma correction
[0014] In addition, in order to solve the problem that the prior art liquid crystal display gamma correction method requires manual gamma correction, it is also necessary to provide a liquid crystal display gamma correction method that can automatically perform gamma correction

Method used

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  • LCD display gamma correction system and method
  • LCD display gamma correction system and method
  • LCD display gamma correction system and method

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Embodiment Construction

[0021] see figure 2 , is a structural diagram of a preferred embodiment of the liquid crystal display gamma correction system of the present invention. The liquid crystal display gamma correction system 20 includes a photoreceptor (Sensor) 21, a signal amplifier 22, an analog / digital converter 23, a micro control unit (Micro Control Unit, MCU) 24, a main controller 25 and a Liquid crystal display 26 to be tested. The main controller 25 sends a control command to the micro control unit 24, and the control command indicates whether to perform gamma correction on the liquid crystal display 26 to be tested. The micro-control unit 24 generates a level signal representing information of each grayscale picture, and transmits the level signal to the liquid crystal display under test 26, so that the liquid crystal display 26 under test displays a grayscale picture. The photoreceptor 21 senses the display brightness of the grayscale image displayed on the liquid crystal display 26 to...

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Abstract

The invention relates to a gamma correction system and a method for LCDs. The gamma correction system consists of an LCD to be detected, a photoreceptor, and a microcontrol unit. The LCD to be detected displays each gray-stage picture according to parameter data and gray-stage voltage which are corresponding to a standard gamma curve which is stored therein. The photoreceptor senses and detects the actual display luminance of gray-staged pictures displayed by the LCD to be detected and transfers the actual display luminance into a voltage signal. The microcontrol unit compares the voltage signal which stands for actual display data with the parameter data corresponding to the standard gamma curve and adjusts the gray-stage voltage of the LCD to be detected according to the result of the comparison. The gamma correction system and the method for LCDs can realize automation of gamma correction.

Description

technical field [0001] The invention relates to a liquid crystal display gamma correction system and correction method. Background technique [0002] With the wide application of liquid crystal displays, people have higher and higher requirements for their display quality. Gamma correction is widely used in order to improve the picture display quality of liquid crystal displays. [0003] At present, liquid crystal displays use the power function y=Ax γ (A is the maximum brightness value displayed by the liquid crystal display, γ represents the set gamma value, x represents the gray scale, and y represents the image brightness under the gray scale) to generate a standard gamma curve. Each gray scale corresponds to a point on the standard gamma curve, so that the corresponding relationship between image brightness and gray scale contained in all the gray scale corresponding points is stored in a gamma register. When gamma correction is performed on the liquid crystal displa...

Claims

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Application Information

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IPC IPC(8): G02F1/133G09G3/36
Inventor 刘昌俊郑刚强
Owner INNOCOM TECH SHENZHEN
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