Patent attributes
According to one embodiment, an embodiment of a pixel conversion device of the invention improves outlines of edge peripheries of characters, etc., of a color digital image signal. The device includes a histogram extraction module, a picture characteristic extraction module which detects a luminance boundary in a luminance signal block on the basis of histogram information, sets a color-difference boundary of the same pattern as that of the luminance boundary to a virtual color-difference signal block, and generates a control signal for unifying the same area by pixel data of the same value, and a data rate conversion module which converts a color-difference signal block before conversion into the same data rate as that of the luminance signal block to correlate the converted color-difference signal block to the virtual color-difference signal block, corrects resolution and obtains a color-difference signal for a format of 4:4:4.
