Patent ID: 9704439
Date: 2017-07-11
CPC Classifications: G09G

Claim:
1. An automatic luminance correction system, the automatic luminance correction system comprising: a computing unit for computing correction parameters according to a luminance-gray scale linear equation; a collecting unit for collecting the current luminance value; and a correcting unit for calculating the target luminance value according to the correction parameter and the current luminance value; wherein the correcting unit calculates the target luminance value based on the following equation: X=ix+j, wherein i is a first correction parameter, j is a second correction parameter, x is the current luminance value, X is the target luminance value; and the computing unit computes correction parameters according to the following luminance-gray scale linear equation: i=(d−c)/(f−e); j=(af+bc−ad−be)/(f−e), wherein a is a first luminance value, b is a second luminance value, c is a first standard gray scale value of the standard liquid crystal panel when the luminance value of the lamp is normal, d is a second standard gray scale value of the standard liquid crystal panel when the luminance value of the lamp is normal, e is a first attenuation gray scale value of the standard liquid crystal panel when the luminance value of the lamp attenuates, f is a second attenuation gray scale value of the standard liquid crystal panel when the luminance value of the lamp attenuates, the first standard gray scale value c and the first attenuation gray scale value e are corresponding to the first luminance value a, the second standard gray scale value d and the second attenuation gray scale value f are corresponding to the second luminance value b.