BACKLIGHT CONTROL FOR A HANDHELD COMPUTING DEVICE

摘要

A system and for adjusting a backlight of a display of a computing device are provided. The method comprises: setting the intensity of the backlight to a first intensity level; and setting the intensity to a second level different from the first level after expiry of a predetermined elapsed time of non-activity from a user data input means of the device either by gradually decreasing the intensity from the first intensity level to the second level or by rapidly decreasing the intensity from the first intensity level to the second level so that the change in intensity appears substantially instantaneous. In the method, one of the setting the intensity to the first level and the setting the intensity to the second level comprises transitioning the intensity to the level, the transitioning being interruptible by a user of the computing device, upon interruption of the transitioning the intensity being set to a magnitude subsisting at the instant of the interruption.