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A method and device for automatically correcting gamma and white balance of a display device

A display device and automatic calibration technology, applied to static indicators, cathode ray tube indicators, instruments, etc., can solve the problems of inaccurate calibration, heavy workload, cumbersome operation, etc., and achieve the effect of improving the accuracy of calibration

Active Publication Date: 2017-11-14
TRULY HUIZHOU SMART DISPLAY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The manual adjustment and correction method has a large workload, and the operation is too cumbersome; and the human eye evaluates the brightness and color of each grayscale of the display device, which will be restricted by factors such as the level, experience and environment of the operator, making the calibration work inaccurate

Method used

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  • A method and device for automatically correcting gamma and white balance of a display device
  • A method and device for automatically correcting gamma and white balance of a display device
  • A method and device for automatically correcting gamma and white balance of a display device

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Embodiment Construction

[0037] The technical solution of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0038] figure 1 It shows a flowchart of a method for automatically correcting gamma and white balance of a display device according to an embodiment of the present invention, which is detailed as follows:

[0039] In step S101, the PC scans the gamma register, obtains and calculates the look-up table 1 of the gamma register parameters and gray-scale voltage values;

[0040] In the embodiment of the present invention, since the gray-scale voltage value corresponding to the gray-scale cannot be directly tested, a PC is required to scan the state of the gamma register to form a look-up table 1 of gamma re...

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PUM

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Abstract

The invention relates to a correction method and device, in particular to a gamma and white balance automatic correction method and device of a display device. It includes a display device, a color analyzer, a PC, and a test pattern generator that are electrically connected in sequence, and the test pattern generator is also electrically connected to the display device through a drive IC. By judging whether the sum of the squares of the difference between the brightness value and the target brightness value under different gray scales satisfies the error range, if so, then end the calibration after curing the gamma register parameters in the gamma register in the driver IC, if not, modify the gamma register parameters , and recalibrate until the sum of the squares of the difference between the brightness value and the target brightness value satisfies the error range. After the gamma and white balance calibration is completed, the calibration results can be automatically judged, and will not be affected by the subjective judgment of the tester.

Description

Technical field [0001] The invention relates to a correction method and device, in particular to a method and device for automatically correcting gamma and white balance of a display device. Background technique [0002] Gamma correction is an important technology for display devices to improve the overall display effect based on the characteristics of the main display device itself. In display systems such as TVs, monitors, scanners, etc., due to the graphics card or monitor, the actual output image will have deviation in brightness. Gamma curve correction is a method to correct this image deviation through a certain method. Devices without gamma correction will affect the color brightness of the final output image. [0003] When correcting LCD (Liquid Crystal Display) screens, since the characteristics of LCD screens are not much different, you can calibrate the gamma and white balance of only one screen for a batch of screens, and then use these parameters to calibrate the rema...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/20G09G3/36G09G5/02G09G5/10
Inventor 吴国良常宏韬沈利军王月文胡君文苏君海李建华
Owner TRULY HUIZHOU SMART DISPLAY
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