Abstract: The present invention relates to a mobile terminal, an audio output device and an audio output system comprising the same. The mobile terminal according to an embodiment of the present invention comprises: a memory for storing audio data; a communication unit for receiving a repetitive radio signal from the audio output device; and a control unit controlling the audio data such that the audio data is transmitted to the audio output device in a wireless manner when the strength or the level of the repetitive radio signal is a first predetermined value or more, while reproducing the audio data, wherein the communication unit comprises a first communication module for receiving the repetitive radio signal and a second communication module for outputting the audio data to the audio output device. Therefore, the audio output device can output a sound of the audio data reproduced by the mobile terminal.

Abstract: The present invention relates to a mobile terminal, an audio output device and an audio output system comprising the same. The mobile terminal according to an embodiment of the present invention comprises: a memory for storing audio data; a communication unit for receiving a repetitive radio signal from the audio output device; and a control unit controlling the audio data such that the audio data is transmitted to the audio output device in a wireless manner when the strength or the level of the repetitive radio signal is a first predetermined value or more, while reproducing the audio data, wherein the communication unit comprises a first communication module for receiving the repetitive radio signal and a second communication module for outputting the audio data to the audio output device. Therefore, the audio output device can output a sound of the audio data reproduced by the mobile terminal.

Abstract: A mobile terminal and group chat controlling method thereof are disclosed, by which a chat content transceived in an performed group chat after a join-impossible state can be received in the course of performing the group chat if impossible to join the group chat. The present invention includes performing a group chat with a plurality of counterparts, displaying a chat window of the performed group chat, if the mobile terminal is impossible to join the group chat (i.e., if the mobile terminal enters a join-impossible state) in the course of performing the group chat, receiving chat contents transceived among a plurality of the counterparts in the performed group chat after the join-impossible state, and displaying the received chat contents.

Abstract: A mobile terminal and recording controlling method thereof are disclosed. The present invention includes performing a call with a counterpart terminal, buffering a call content of the performed call by a predetermined time unit, receiving an input of a recording command signal for the performed call, and if receiving the input of the recording command signal, recording the call content from an input point of the recording command signal by including the call content from a random point in a time interval corresponding to the call content buffered up to the input point of the recording command signal.

Abstract: A mobile terminal and group chat controlling method thereof are disclosed, by which a chat content transceived in an performed group chat after a join-impossible state can be received in the course of performing the group chat if impossible to join the group chat. The present invention includes performing a group chat with a plurality of counterparts, displaying a chat window of the performed group chat, if the mobile terminal is impossible to join the group chat (i.e., if the mobile terminal enters a join-impossible state) in the course of performing the group chat, receiving chat contents transceived among a plurality of the counterparts in the performed group chat after the join-impossible state, and displaying the received chat contents.

Abstract: A mobile terminal and recording controlling method thereof are disclosed. The present invention includes performing a call with a counterpart terminal, buffering a call content of the performed call by a predetermined time unit, receiving an input of a recording command signal for the performed call, and if receiving the input of the recording command signal, recording the call content from an input point of the recording command signal by including the call content from a random point in a time interval corresponding to the call content buffered up to the input point of the recording command signal.