Patent ID: 9699543
Date: 2017-07-04
CPC Classifications: H01M,H02J,H04R

Claim:
1. A mobile terminal, comprising: a terminal body; a display unit; an audio output module located in the terminal body; a power supply unit located in the terminal body; an earphone port formed on one side of the terminal body; and a controller configured to: detect insertion of a plug of an earphone having a cable-type battery into the earphone port, detect the power supply unit being charged by the cable-type battery of the earphone, receive an input for performing an audio output function while the charging the power supply unit is maintained, display a menu on the display unit for selecting at least one of the audio output module or the earphone inserted in the earphone port as an audio output path to output audio sound according to the audio output function, and output the audio sound through the earphone while the power supply unit is charged by the cable-type battery of the earphone, in response to selecting the earphone as the audio output path, wherein the controller comprises a main processor configured to operate while the mobile terminal is turned on and a sub-processor configured to operate from stand-by power while the mobile terminal is turned off, and wherein, when insertion of the plug of the earphone into the earphone port is detected while the mobile terminal is turned off, the sub-processor activates only the audio output function for playing multi-media data.