Abstract
This paper proposes a new processor-based backlight dimming algorithm and hardware
architecture. The processor-based design of the backlight dimming system requires low computation
for real-time processing. The proposed algorithm calculates an average gray level of RGB signals
and combines the histogram gray-level bins to reduce computation. Additionally, it uses scene
change detection and adaptive binary search to decrease iterations of the clipped error control
algorithm. In the simulation results, the proposed algorithm reduced computation time by up to
94.2%, compared to a conventional algorithm. Further, the proposed processor-based backlight
dimming system drove a 32-inch LCD panel successfully.
© 2013 IEEE
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