Patent ID: 9691337
Date: 2017-06-27
CPC Classifications: G02F,G09G

Claim:
1. A digital gamma correction part comprising: a memory configured to store a basic gamma reference data, a first compensated gamma reference data and a second compensated gamma reference data, wherein respective data of the first compensated gamma reference data are greater than respective data of the basic gamma reference data, and respective data of the second compensated gamma reference data are less than respective data of the basic gamma reference data; and a selector configured to receive a luminance data which is a measured luminance data of a display panel, and to output a gamma reference data by selecting one from the basic gamma reference data, the first compensated gamma reference data and the second compensated gamma reference data based on the luminance data and a predetermined gamma converted reference range, wherein the luminance data comprises a plurality of luminance values corresponding to grayscale levels, respectively, and the selector comprises a convertor configured to convert the luminance values to a plurality of gamma converted values, respectively, and a comparator configured to compare the gamma converted values with the predetermined gamma converted reference range, and wherein, when the gamma converted values are within the predetermined gamma converted reference range, the selector is configured to select the basic gamma reference data, when a minimum of the gamma converted value is less than a minimum value of the predetermined gamma converted reference range, the selector is configured to select the first compensated gamma reference data, and when a maximum gamma converted value is greater than a maximum value of the predetermined gamma converted reference range, the selector is configured to select the second compensated gamma reference data.