Compensation Methods for Display Brightness Change Associated with Reduced Refresh Rate

摘要

A method and system are provided for compensating for brightness changes in a display having an array of display pixels. The method includes storing a plurality of look-up tables, where each table has a plurality of brightness signals that provide compensation for a brightness change when the refresh rate is changed during a panel self-refresh. The method also includes using display control circuitry to determine the refresh rate associated with an input signal and to determine a compensation based on the refresh rate. The display control circuitry may, for example, use non-linear interpolation to generate a look-up table for the refresh rate. The display control circuitry may adjust the input signal based on the look-up table to produce an output signal that compensates for a brightness change at the refresh rate. The output signal may be transmitted to the array of display pixels.

主权项

1. A method of compensating for brightness change in a display when the display is operated 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 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 the display control circuitry, determining an index value based on the given refresh rate; and with 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.