| 摘要 |
A contour emphasizing circuit provided with a Y-signal generating circuit (36) which generates luminance signals from digital R, G, and B signals, a contour extracting circuit (38) which extracts contour components from the generated Y-signal, a coefficient multiplying circuit (42) which outputs contour components for R, G, and B by multiplying the extracted contour components by coefficients Kr, Kg, and Kb, addition circuits (34r, 34g, and 34b), and a contour emphasis enable circuit (39) which controls the period for which contour components extracted by the extracting circuit (38) are supplied. Therefore, the contour emphasizing circuit prevents process errors in the peripheral portion of the screen of a display. <IMAGE> |
