Mobile device for multi-channel sound collection and output using common connector, and driving method thereof

A driving method of a mobile device having a sound compressor, a sound decompressor, and a connector for receiving a sound collector plug or a sound output plug, the method comprising:

• identifying by an identification unit whether the plug electrically coupled to the connector is the sound collector plug or the sound output plug for multi-channel stereophonic sound if three or more audio input lines of the sound collector plug or three or more audio output lines of the sound output plug are associated with compression or decompression of sound;
• and
• selectively switching by a switching unit to couple the plug coupled to the connector to one of the sound compressor and the sound decompressor according to an identification outcome.

A mobile device having a sound compressor and a sound decompressor, comprising:

• a connector for receiving an external sound collector plug or a sound output plug;
• and
• a controller for determining whether the plug electrically coupled to the connector is the sound collector plug or the sound output plug by comparing an impedance or a voltage level detected thereon to a predetermined value, and selectively coupling the plug electrically coupled to the connector to one of the sound compressor and the sound decompressor according to a determination outcome, and identifying that the plug is adapted for multi-channel stereophonic sound if three or more audio input lines of the sound collector plug or three or more audio output lines of the sound output plug are associated with compression or decompression of sound.