摘要 |
PURPOSE: A method for saving a battery of a portable information terminal is provided to check an audio path when a call connection event is generated, and to turn off an LCD if the audio path is set to a current microphone and an earpiece, thereby saving the battery. CONSTITUTION: A portable information terminal decides whether the terminal is in a call connection state by a call connection signal(S11,S12). If not, the terminal decides whether a key is inputted, and if so, the terminal turns on an LCD, and if not, the terminal turns off the LCD(S13-S15). If the terminal is in the call connection state, the terminal turns off the LCD while making a call through an earphone and a microphone mounted on the terminal, and if the key is inputted while making the call, the terminal turns on the LCD(S16-S20).
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