| 摘要 |
A display device including a clock generation circuit for generating sampling clocks, whose frequency is variable, on the basis of a horizontal synchronizing signal of an input image signal; an analog-to-digital converter for sampling the input image signal on the basis of the sampling clocks generated from the clock generation circuit; calculation device for calculating the number of sampling clocks outputted from a horizontal image start position to a horizontal image end position in image data outputted from the analog-to-digital converter, comparison device for comparing the number of sampling clocks calculated by the calculation means with a previously set value, and a controller for controlling the frequency of the sampling clocks outputted from the clock generation circuit on the basis of the results of the comparison in the comparison means.
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