Patent ID: 9620064
Date: 2017-04-11
CPC Classifications: G09G

Claim:
1. A method of compensating for brightness change in a display when the display is operated to display a frame of display data at a given refresh rate, wherein the display is controlled using display control circuitry, wherein the display control circuitry is configured to perform compensation using first and second look-up tables, wherein the display control circuitry is configured to impose a limit on an allowable amount of compensation applied to the frame of display data, wherein the first look-up table includes a first plurality of brightness signals that provide compensation for brightness changes at a first refresh rate, and wherein the second look-up table includes a second plurality of brightness signals that provide compensation for brightness changes at a second refresh rate, the method comprising: with a graphics processing unit, generating an input signal having the given refresh rate; with a timing controller in the display control circuitry, determining an index value based on the given refresh rate; with the timing controller in the display control circuitry, generating a third look-up table based on the index value and the first and second look-up tables using interpolation while operating the display to display the frame of display data at the given refresh rate; with the timing controller in the display control circuitry, applying the third look-up table to the input signal to generate an output signal by adjusting the input signal associated with the frame of display data based on the third look-up table while maintaining the amount of compensation applied to the frame of display data below the limit by applying a portion of a target compensation to the frame of display data; and with the timing controller in the display control circuitry, transmitting the output signal to a pixel in the display, wherein the output signal adjusts a brightness of the pixel to compensate for the brightness change at the given refresh rate.