Patent ID: 7729552
Filing Date: 2010-06-01
Classification: G09G

Abstract:
1. An apparatus for improving qualities of motion and still images to be output in a mobile communication terminal, the apparatus comprising: a display for displaying an applied image in a color representation scheme based on a predefined number of bits; an error diffuser for computing quantization errors by sequentially selecting pixels constructing an original image when the original image is input, computing pixel-by-pixel error values by adding stored error values related to a current pixel to error-reflected values determined by predefined error-reflected ratios based on positions of at least one neighboring pixel around a selected pixel and the computed quantization errors, and generating an error-diffused image by reflecting the pixel-by-pixel error values in quantization values in a current color representation scheme for the pixels of the original image; a controller for inputting a selected original image to the error diffuser when a user selects the original image to be output and controlling the display to output the error-diffused image in place of the original image when the error-diffused image is generated; and an error calculator for determining the error-reflected values of the at least one neighboring pixel around a current quantized pixel using an error-reflected-value table storing quantization-error-reflected values pre-computed according to quantization error values and the error-reflected ratios related to positions of neighboring pixels.