Patent ID: 9099049
Filing Date: 2015-08-04
Classification: G09G

Abstract:
1. A method of dimming a backlight assembly of a display panel comprising a plurality of light sources divided into at least one dimming area, the method comprising: providing image signals to the display panel; extracting a plurality of gray-scale values from image signals corresponding to the dimming area to calculate a location parameter value of the gray-scale values; calculating a kurtosis and a skewness using the location parameter value to output the kurtosis and the skewness as a first calculated value; calculating at least one of a variance, a standard deviation, a central moment, and an image moment using the location parameter value to output at least one of the variance, the standard deviation, the central moment, and the image moment as a second calculated value; calculating a maximum value of the gray-scale values; determining a representative gray-scale value corresponding to the dimming area using the first and the second calculated values; determining a dimming function for the light sources included in the dimming area based on the representative gray-scale value; and driving the light sources included in the dimming area based on the dimming function, wherein the representative gray-scale value GRE is represented by the following formula: wherein m denotes the location parameter value, P denotes the maximum value, γ and β are predetermined constants, C is a predetermined constant satisfying 0.5≦C≦1.5, K is Max(| and zero (0) if T denotes a predetermined threshold value, μ