Patent ID: 6667731
Filing Date: 2003-12-23
Classification: H04M,H04W,Y02D

Abstract:
A control method for driving backlight parts in a mobile phone, the method comprising:providing a mobile phone having a display backlight part for providing backlight to a display, a keypad backlight part for providing backlight to a keypad, and a cover monitor for monitoring the state of a cover; determining whether the cover is opened or closed; determining whether key input data has been received from the keypad; and selectively controlling the state of the display backlight part and the state of the keypad backlight part that are selectively and independently driven, according to whether the state of the cover is determined to be opened or closed and the presence or absence of key input data, by: turning ON both the display backlight part and the keypad backlight part when the cover is open; and turning ON only the display backlight part when key input data is received from the keypad while the cover is closed.