| 摘要 |
PROBLEM TO BE SOLVED: To provide a novel configuration capable of detecting the fact that an image displayed in a display has stuck due to abnormality, in a system where an image according to a digital signal inputted from a camera can be displayed in the display.SOLUTION: An image signal processor includes signal acquisition means (33) for acquiring a digital signal inputted from a camera (10) directly or indirectly, and provided for driving a display (35), change determination means (33) determining presence or absence of a secular change for some signals including at least the least significant bit corresponding to the luminance of a predetermined color in a predetermined pixel, out of the digital signal acquired by the signal acquisition means, and abnormality determination means (33) for determining that the digital signal has an abnormality, when the change determination means determines that there is no secular change of some signals over a predetermined period.SELECTED DRAWING: Figure 1 |
