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Picture signal processor for performing both large area and small area contrast reduction, and picture display apparatus incorporating such a picture signal processor
Picture signal processor for performing both large area and small area contrast reduction, and picture display apparatus incorporating such a picture signal processor
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机译:用于同时进行大面积和小面积对比度降低的图像信号处理器以及包括这种图像信号处理器的图像显示装置
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摘要
A picture signal processor providing a contrast reduced picture signal, which includes a first contrast reduction device (MUL-R1, D5, CA1) receiving a picture signal (R-in) for providing a first contrast reduced picture signal (R), the first contrast reduction device only reduces the contrast of the picture signal (R-in) when the picture signal (R-in) exceeds a given first threshold (95%) for relatively large areas, while the picture signal processor further includes a second contrast reduction device (MUL-R2, D8, CA2), which is coupled to the first contrast reduction device (MUL-R1, D5, CA1) and which provides the contrast reduced picture signal by immediately reducing the contrast of a too bright part of the first contrast reduced picture signal (R) as soon and as long as an instantaneous amplitude of the first contrast-reduced picture signal (R) exceeds a given second threshold (100%).
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