| 摘要 |
A display apparatus comprising a receiving unit, a signal-processing unit, and a display device. Histogram distribution data is generated for a luminance level of a video signal output from the signal-processing unit. The apparatus further has a first multiplier, a second multiplier, and a differentiator. The first multiplier multiplies the histogram distribution data by multiplying values, where the higher the luminance level of each part of the histogram data is. The multiplier multiplies the histogram distribution data by multiplying values, where the lower the luminance level of each part of the histogram data is. The differentiator finds a difference between outputs of the first and second multipliers, generating control data that lowers a luminance-adjusting voltage of the display device in accordance with the magnitude ratio of the output from the first multiplier to the output of the second multiplier.
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