ERROR DIFFUSION PROCESSING CIRCUIT AND METHOD, AND PLASMA DISPLAY DEVICE

摘要

PROBLEM TO BE SOLVED: To provide an error diffusion processing circuit for achieving improved display quality.

SOLUTION: The error diffusion processing circuit includes: a separation part (401) which separates digital pixel data of an object pixel into upper bits and lower bits and takes the lower bits as error data; multiplication circuits (407 to 410) which multiply transmission error data of a plurality of adjacent pixels by adjacent pixel weighting coefficients and outputs weighted transmission error data; a first addition circuit (411) which performs addition on the basis of the error data of the object pixel and the weighted transmission error data of adjacent pixels and outputs an addition value and a carry value; a second addition circuit (402) which adds upper bit pixel data of the object pixel and the carry value together and outputs output pixel data; and a correction circuit (800) which corrects transmission error data of an adjacent pixel into error data of the object pixel or data resulting from arithmetic processing of the error data in the case that the transmission error data of the adjacent pixel is 0, and outputss a correction result to multiplication circuits.

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