Importance

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Abstract

A display control method and apparatus for quantizes input data to binary or multivalued data and delivers the quantized data to a display device such as a matrix panel display. When input data is quantized as by the error-diffusion method and displayed, an area in which there is no change in the display is scanned by multi-interlacing, whereas an area in which there is a change in the display is scanned preferentially and in interlaced fashion. As a result, a flicker-free image having a high picture quality can be displayed at high speed. Further, error produced by the error-diffusion method is reset at a prescribed line and, at the time of the error resetting operation, error-diffusion processing is executed from a line located several lines earlier, thereby preventing the occurrence of sparkling noise and making it possible to display an image of a high picture quality in which the continuity of error-diffusion processing is maintained.

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First Claim