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Automatic gamma and white balance correction method and device for display device

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

Active Publication Date: 2015-07-29
TRULY HUIZHOU SMART DISPLAY
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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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  • Automatic gamma and white balance correction method and device for display device
  • Automatic gamma and white balance correction method and device for display device
  • Automatic gamma and white balance correction method and device for display device

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Embodiment Construction

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

[0038] figure 1 A flow chart of a gamma and white balance automatic correction method for a display device provided by an embodiment of the present invention is shown, and the details are 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 tested directly, the PC needs to scan the state of the gamma register to form a lookup table 1 ...

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Abstract

The invention relates to a correction method and device, in particular to an automatic gamma and white balance correction method and a device for a display device. The automatic gamma and white balance correction device comprises a display device, a color analysis meter, a PC (Personal Computer) and a test pattern generator which are sequentially connected electrically; the test pattern generator is electrically connected with the display device through a driving IC (Integrated Circuit). According to the automatic gamma and white balance correction device, whether the quadratic sum of difference between luminance values under different gray levels and target luminance values satisfies an error range or not is judged, correction is finished after solidification of gamma register parameters in a gamma register of the driving IC, the gamma register parameters are modified if not, and recalibration is performed until the quadratic sum of the difference between the luminance values and the targeted luminance values satisfies the error range; a calibration result is automatically judged after calibration of gamma and white balance and the calibration result is not influenced by subjective judgment of tested person.

Description

technical field [0001] 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. Background technique [0002] Gamma correction is an important technology for a display device to improve the overall display effect according to the characteristics of the main display device itself. In display systems such as TVs, monitors, scanners, etc., due to graphics cards or monitors, there may be deviations in the brightness of the actual output image. Gamma curve correction is a method to correct this image deviation through a certain method. Devices that are not gamma corrected will affect the color brightness of the final output image. [0003] When calibrating LCD (Liquid Crystal Display) screens, since the characteristics of LCD screens are not much different, you can only calibrate the gamma and white balance of one screen for a batch of screens, and then use these parameters to ...

Claims

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Application Information

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Patent Type & Authority Applications(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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