| 摘要 |
An apparatus for contrast control and an associated method are provided. The apparatus can adjust the backlight brightness for a white or black frame to enhance the contrast of a display device, and keep the backlight brightness at a suitable level for other frames to avoid lowering the contrast of a single frame. The apparatus includes a frame detection unit and a backlight control unit. The frame detection unit detects whether an input frame is a white or black frame, and outputs a corresponding detection signal; the backlight control unit generates a backlight control signal according to the detection signal, thereby controlling the brightness of a backlight source of the display device.
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