Mobile electronic device with luminance control according to surrounding brightness and contact

摘要

A luminance control device and method are disclosed. A surrounding brightness of a touch panel is measured to obtain a measured surrounding brightness. A luminance of the touch panel is controlled during a first time period starting from when the measured surrounding brightness changes from a first condition to a second condition, during which the measured surrounding brightness decreases by an amount equal to or greater than a threshold value. The luminance of the touch panel is maintained at a first luminance corresponding to the first condition when the measured surrounding brightness changes from the second condition to the first condition. The luminance of the touch panel is controlled to change to a second luminance corresponding to the second condition, when the measured surrounding brightness has not changed from the second condition to the first condition.

主权项

1. A mobile electronic device comprising:
a touch panel; an optical sensor that measures a surrounding brightness of the touch panel to provide a measured surrounding brightness; and one or more processors that
detect a change between a first condition of the measured surrounding brightness and a second condition of the measured surrounding brightness, and,when a change from the first condition to the second condition is detected, based on whether or not a contact to the touch panel is detected, maintain luminance of the touch panel at a first luminance corresponding to the first condition or change the luminance of the touch panel to a second luminance corresponding to the second.