Patent ID: 6157849
Filing Date: 2000-12-05
Classification: H04M,H04W,Y02D

Abstract:
A method for controlling a back light in a portable radio communication terminal having a keypad with a plurality of keys, and a timer for performing a clock function, comprising the steps of:determining whether current time of the timer is within a predetermined time period;automatically determining whether the portable radio terminal is operating in a hands-free mode:setting a back light-off mode when the current time is within said predetermined time period;managing input key data which is generated by depressing any one of the plurality of keys on the keypad, without turning on the back light during the back light-off mode and/or during the hands-free mode;setting a back light-on mode when the current time is not within said predetermined time period;turning on the back light upon receiving the input key data during the back light-on mode; andturning on the back light when the portable radio terminal is operating in the hands-free mode during the back light-on mode.