Patent ID: 8358262

Claim:
A method comprising: determining that a display-related event has occurred during a vertical frame period by determining whether an average image intensity has changed, whether a backlight setting has changed, and whether a gamma look-up table has changed; setting a histogram dirty flag in response to detecting a change in average image intensity, setting a backlight dirty flag in response to a request to adjust a backlight setting, and setting a gamma dirty flag in response to a request to change a gamma look-up table; in response to determining that the display-related event has occurred during a vertical frame period indicating that an associated change to at least one of a backlight intensity and an image luminance are to be undertaken, enabling an interrupt; and during subsequent interrupt processing, applying corresponding changes to the backlight intensity and the image luminance in a coordinated manner by initiating changes to the backlight intensity and, after a delay based on an amount of time it takes for the backlight intensity to reach a target level, applying changes to the image luminance.