| 摘要 |
PURPOSE: To provide a driving method and device which obviate the degradation in resolution in spite of decreasing the number of bits of the signals to be handled and prevent the appearance of unique patterns. CONSTITUTION: This display driving device includes a medium contrast display section 4 which detects the luminance level of quantized and inputted original pixel video signals and selects the luminance patterns of plural pixels in preset one dot and a driving section 43 which is low in the number of display gradations for displaying the medium contrast with the respective pixels based on the patterns selected by this medium contrast display section 42. If one dot of the input signals is assumed to be composed of, for example, four pixels and if the video input level exists at the point (a) where the video input level is 1/4 the level from the point A, this level is discriminated by a luminance level discriminating circuit 44 and the patterns corresponding to the point (a) are selected from a pattern generating circuit 46. The medium contrast display output of this time is a combination of three pixels for A and one pixel for B. Similarly, the medium contrast display output is a combination of two pixels for A and two pixels for B in the case of 1/2 and a combination of one pixel for A and three pixels for B in the case of 3/4. |
