Content output device and control method thereof

A content output device comprising:

• an output unit comprising output circuitry;
• a communication interface comprising communication circuitry;
• and
• a processor configured to;
• buffer, in response to receiving a content from an external content output device via a first communication network, the content to a first reception buffer and output the buffered content through the output unit, and
• buffer, in response to receiving the content via a second communication network after completion of setting a connection with the external content output device via the second communication network, the content to a second reception buffer and output the buffered content through the output unit,
• wherein the first communication network is connected through an external network apparatus, and
• wherein the second communication network is connected without going through the external network apparatus.

A content output system including a first content output device and a second content output device, the content output system comprising:

• the first content output device configured to:
• transmit, in response to a content and a output request for the content being received, the content to the second content output device via a first communication network,
• output the content by synchronizing with the second content output device, and
• set a connection with the second content output device via a second communication network;
• and
• the second content output device configured to:
• output, in response to completion of setting a connection with the first content output device via the second communication network, the content received from the first content output device via the second communication network while outputting the content received from the first content output device via the first communication network by synchronizing with the first content output device,
• wherein the first communication network is connected through an external network apparatus, and
• wherein the second communication network is connected without going through the external network apparatus.

A method for controlling a content output device, the method comprising:

• outputting a content and transmitting the content to an external content output device via a first communication network in response to receiving the content and a output request for the content from an external device via the first communication network;
• and
• transmitting the content to the external content output device via a second communication network in response to completion of setting a connection with the external content output device via the second communication network,
• wherein the first communication network is connected through an external network apparatus, and
• wherein the second communication network is connected without going through the external network apparatus.

A method for controlling a content output device, the method comprising:

• buffering a content to a first reception buffer and outputting the content in response to receiving the content from an external content output device via a first communication network;
• and
• buffering the content to a second reception buffer and outputting the content in response to receiving the content via the second communication network after completion of setting a connection with the external content output device via the second communication network,
• wherein the first communication network is connected through an external network apparatus, and
• wherein the second communication network is connected without going through the external network apparatus.