Adaptive feedback control method for color sequential display

Abstract

The invention discloses an adaptive feedback control method for a color sequential display, comprising the following steps: a resetting step, i.e. transforming the gray scale value of the three-primary color field of an input image into the gray scale value of a new three-primary color field and a D-field; a sampling step, i.e. sampling pixels among sampling areas according to the resolution ratio of the input image; a feedback control step, i.e. totaling up pixel-to-pixel for color separation based on the color separation value in a Lu'v' color space and the color value of the input image so as to obtain a total color difference value, and carrying out feedback control for digit precision on the total color difference value to obtain the minimum total color difference value; and a synchronizing step, i.e. according to the minimum total color difference value, performing synchronized liquid crystal / backlight on the liquid crystal signal and the backlight gray scale of the input image to reduce color separation phenomena so as to minimize color separation, or reduce the load of calculated amount by controlling color separation.

Description

technical field [0001] The present invention relates to image display, in particular to an adaptive feedback control method for improving the color separation phenomenon of a color sequential display by timely adjusting the backlight color field to obtain the minimum color difference of the image according to the screen content. Background technique [0002] Traditional liquid crystal displays use color filters to achieve full-color effects, but the light efficiency produced by them is not as expected. Recently developed fast-response liquid crystals, such as Optically Compensated Bend (OCB) mode, and backlight sources, such as high-efficiency light-emitting diodes (Light-Emitting Diode, LED), have achieved color sequential method (Field Sequential Color, FSC) mechanism of liquid crystal display (Liquid Crystal Display, LCD). By sequentially displaying the main red, blue, and green fields at a speed faster than the human eye's response time resolution (Time Resolution), ful...

AI Technical Summary

Problems solved by technology

[0010] (1) Color separation tends to occur in the high frequency part of the high brightness (Y value) signal level;

[0011] (2) Color separation tends to occur when the frequency of the X value is greater than the frequency of the Z value;

[0012] (3) Color separation tends to occur in the part with high Z value, that is, when both X value and Y value are low

However, in order to obtain the color of the fourth sub-field, it is necessary to analyze the statistical value of the image first, which not only consumes the calculation time, but also increases the calculation capacity

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