Timing controller and operating method thereof

A timing controller, comprising:

• a receiver configured to receive image data of an input image, wherein the input image comprises a plurality of pixels;
• an image compensator configured to generate compensated image data according to the image data;
• and
• a transmitter configured to output the compensated image data such that a display device comprising the timing controller displays an image according to the compensated image data;
• wherein the image compensator is further configured to:
• divide the input image into a plurality of image blocks along a horizontal direction;
• select the pixels located at one of columns of each of the image blocks as a plurality of target pixels;
• obtain each of gray levels of the pixels;
• generate an average representative gray level of each of the image blocks according to a histogram of the gray levels of each of the image blocks;
• input the average representative gray level of each of the image blocks into a first lookup table to obtain a first gain of corresponding image block;
• input a vertical pixel position of each of the target pixels of each of the image blocks and the average representative gray level of the corresponding image blocks into a second lookup table to obtain a second gain of the corresponding target pixel of the corresponding image block;
• obtain each of compensated gray levels of the target pixels of each of the image blocks by multiplying the gray level of the corresponding target pixel, the first gain of the corresponding image block, and the second gain of the corresponding target pixel;
• and
• replace the gray levels of the target pixels with the compensated gray levels of the corresponding target pixels, respectively, so as to acquire the compensated image data.