Method for processing space expansion FRC

Abstract

This invention discloses a method for processing special expanded FRC including: a step of realizing non-linear time mixed color by limitlessly repeating different time mixed color sub-sequences, a step of space-expanding pixels in a same color component stage having the following technical results: 1, fine color display performance, the maximum difference of the open pixels of two adjacent frames is smaller than the typical FRC and the group FRC and the mean brightness of the picture keeps the same, 2, the expanded area of FRC does not influence the entire LCD controller.

Description

technical field The invention relates to a space-expanding FRC processing method, which expands the nonlinear time-mixing color to the displayed screen space, and the method is mainly applicable to mobile phones and liquid crystal display controllers on sales terminals. Background technique The FRC (Frame Rate Control) frame rate control method is mainly used in STN (Super Twisted Nematic) super twisted nematic liquid crystal display control. Because STN has advantages in cost and power consumption, it is widely used in mobile phones, sales terminals, etc., but each pixel displayed by STN has only two states of "on" or "off". In order to display different color levels, it is necessary to pass Time to mix colors to achieve. The typical FRC method uses nonlinear temporal color mixing to improve the nonlinearity of the color level display of the liquid crystal display. However, during temporal color mixing, since the average brightness of the color block will change with the ...

AI Technical Summary

Problems solved by technology

The typical FRC method uses nonlinear temporal color mixing to improve the nonlinearity of the color level display of the liquid crystal display. However, during temporal color mixing, since the average brightness of the color block will change with the FRC frequency of the pixel, it will cause a slight visual jitter

A better grouping FRC method, grouping pixels of the same level of color by position, such as: grouping by modulo 4 distance, different groups are processed in different time series similar to the typical FRC method, due to the average within the color block The fluctuation of brightness is inconsistent, and the number of maximum bright and dark pixel differences in every two frames of image refresh is reduced, reducing visual jitter; at the same time, it still maintains the non-linear support for the color level of liquid crystal display; however, according to the position The grouped FRC method may be particularly sensitive to some specific pictures, and may still cause slight visual jitters

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