| 摘要 |
PROBLEM TO BE SOLVED: To provide an image display device capable of exactly processing an image corresponding to the kinds of display images. SOLUTION: When a display image is a photographic image or a moving image, an ON-signal is inputted from an ON-OFF circuit 11 to a sharpness circuit 1 and a gamma-correction circuit 2 by a control signal from a control circuit 10, the sharpness circuit performs sharpness processing on an input image signal Fc for emphasizing the outline, and the signal of an intermediate level is raised up in the level by gamma-correction in a gamma correction circuit 2 and the outline is emphasized on a CRT 5, and a clear and high quality photographic image or moving image emitted with brightness proportional to the signal level can be displayed, and when the display image is a code display image such as characters, controls the sharpness circuit 1 into an inactive state and the gamma-correction circuit into active state by a control signal from a control circuit 10, and it becomes possible to display a clear code image with a light-emission characteristic proportional to the signal level of the input image signal Fc.
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