| 摘要 |
PURPOSE:To solve a problem involving occurrence of a false profile by preventing error detection amount from becoming zero as possible. CONSTITUTION:In a device which adds a reproduced error which occurred in the past before original picture element to an original picture element image signal which is quantized and input so as to obtain a diffusion output signal and outputs the signal with less bits than an original picture element image input signal for carrying out pseudo-half tone display, a memory 38 which presets a correction luminance line P which does not cross a stair-like light emission luminance level Q as possible and changes smoothly and continuously and which stores it as data of a correction error level is provided so as to output the data which corresponds to a diffusion output signal level from the memory 38. Consequently, there is scarcely any point where the correction luminance line crosses the light emission luminance level, and error detection amount does not become zero. As a result, a false profile does not occur. |
