timely change of screen brightness

摘要

The present invention relates to a method for automatically changing the brightness of a display device which includes, while the display device is at a first light output level, detecting an energy saving event indicating that it is It is desirable to reduce the total energy consumed by the display device. The method also includes continuing to operate the display device at the first power output level while attempting to identify an event triggering a change in the light output level. The event triggering a change in the light output level is an event that, when it occurs, causes a change in the light output level of the less noticeable display device to a user. The method also includes detecting a trigger event of change in the light output level. In response to detection of the trigger event of change in the light output level, the method includes changing the display output power output level to a second light output level.