Compensation Methods for Display Brightness Change Associated with Reduced Refresh Rate

摘要

A method is provided for compensating for brightness change in a display. The method includes storing a plurality of look-up tables (LUTs), where each table has a plurality of pixel levels at a variable refresh rate (VRR) and a plurality of brightness signals that provide compensation for the brightness change when refresh rate is changed during a panel self-refresh (PSR). The method also includes receiving an input signal from a graphics processing unit (GPU) and determining the VRR of the input signal from the GPU. The method further includes obtaining the LUT at the determined VRR of the input signal and adjusting the input signal to produce an output signal that compensates for the brightness change for each pixel or sub-pixel in a timing controller based upon the LUT at the determined VRR. The method further includes transmitting the output signal to the display. A system is also provided.

主权项

1. A method of compensating for brightness change in a display, the method comprising:
storing a plurality of look-up tables (LUT), each table having a plurality of pixel levels at a reduced refresh rate and a plurality of brightness signals that provide compensation for the brightness change when refresh rate is changed during a panel self-refresh (PSR); receiving an input signal from a graphics processing unit (GPU); determining the reduced refresh rate of the input signal from the GPU; obtaining the LUT at the determined the reduced refresh rate of the input signal; adjusting the input signal to produce an output signal that compensates for the brightness change for each pixel or sub-pixel in a timing controller based upon the LUT at the determined reduced refresh rate; and transmitting the output signal to the display.