Patent ID: 8373719

Claim:
A luminosity calibrating controller for improving luminous uniformity of a display device, equipped with a panel comprising a plurality of sampling pixels each corresponding to a coordinate of the panel, the luminosity calibrating controller comprising: a receiving end, for receiving an input pixel; a neighboring sampling pixel estimation unit, for determining a plurality of neighboring pixels of the input pixel according to a coordinate of the input pixel and coordinates of the plurality of sampling pixels; a look-up table accessing unit, for receiving a plurality of gamma tables of the plurality of neighboring sampling pixels, each gamma table comprising a plurality of luminous calibrating values of a neighboring sampling pixel; a calibrating value accessing unit, for acquiring a specific luminous calibrating value corresponding to a gray level of the input pixel from each of the plurality of gamma tables, according to the gray level corresponding to the input pixel; and a compensation calculating unit, for calculating a luminous calibrating value of the input pixel according to the coordinate of the input pixel, the coordinates of the plurality of neighboring sampling pixels and a plurality of specific luminous calibrating values; wherein the plurality of gamma tables are derived by: applying a mathematical transfer function to transfer measured data of luminosity and gray level of each of the plurality of sampling pixels, from exponential-like relationship to linear relationship; applying a linear interpolation method to derive relation between unmeasured luminosity and gray level of each of the plurality of sampling pixels, to obtain linear calibrating function of each of the plurality of sampling pixels; and deriving each of the plurality of gamma tables according to the linear calibrating function of each of the plurality of sampling pixels.