An Error Diffusion Method based on Temporal and Spatial Dispersion of Minor Pixels on Plasma Display Panel

摘要

The present invention when applying an error diffusion method for the resolution of the low gradation reproduction problems caused by inverse gamma correction in a plasma display (PDP) to reduce the noise eyesore by suppressing the redundant light emission by the color channels in the same pixel position as, a PDP R, G, R to the B input value, G, B and performing the inverse gamma correction for each of 256 gray levels for each channel; Separating the execution result of the inverse gamma correction to the integer part and a decimal part; Converting the updated fractional part by adding the weighted error values ​​transmitted from the fractional part of the divided and already processed pixels; Frame and R, G, B channels of the vertical steps of: determining a dither matrix used by the horizontal signal and determines the threshold value in the dither matrix; Performing the binarization by comparing the updated fractional part with the threshold value; Displaying on the PDP after the binarization result value obtained by adding the integer part; And for calculating an error of said updated predetermined break value and the binarization result and the processing of the weighted error weighted by the determined error diffusion weighted forward, depending on the threshold value and the sign of the calculated error in the already processed pixels and a step of passing the surrounding pixels.; According to the present invention, in the PDP applied when few pixels of the error diffusion method that can soften the image in a dark area by reducing the conspicuous difference in luminance between the peripheral pixel and the small number of pixels has the effect of noise is also reduced in accordance with the juleodeum.