CPC G09G 3/3426 (2013.01) [G09G 2320/0238 (2013.01); G09G 2320/066 (2013.01); G09G 2320/0686 (2013.01); G09G 2360/16 (2013.01); G09G 2380/10 (2013.01)] | 15 Claims |
1. A dimming value filtering device for spatially filtering dimming values for adjusting the brightness of blocks of a backlight, the device comprising:
a mask generating circuit configured to generate a first mask and a second mask from among a plurality of masks different from each other;
a mask application circuit configured to apply the first mask to first blocks corresponding to a center of the backlight and apply the second mask to second blocks corresponding to a corner or an edge of the backlight;
a filtering result calculating circuit configured to calculate a filtered dimming value for each of the first blocks according to the first mask based on a first coefficient and the second blocks according to the second mask based on a second coefficient greater than the first coefficient; and
a transmitting and receiving circuit configured to transmit the filtered dimming value.
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