Content transmission device and mobile terminal for performing transmission of content

A mobile terminal comprising:

• a display;
• a wireless communication processor configured to transmit a control signal to a content transmission device;
• and
• a controller configured to:
• in response to an input for an execution of a content playback application, display a content playback setting screen on the display including:
• a plurality of content reception devices,
• a plurality of input terminals of the content transmission device through which the content reception devices are connected to the content transmission device, and
• a plurality of thumbnail images corresponding to content data input via the respective input terminals, wherein the displayed thumbnail images correspond to a selected content reception device and a contemporaneously-selected input terminal that is capable of displaying the corresponding content data;
• in response to a selection of a first content reception device among the plurality of content reception devices and a selection of a first input terminal among the plurality of input terminals, and a selection of a thumbnail corresponding to the first content, transmit the data of the first content received through the first input terminal of the content transmission device to the first content reception device, and
• in response to a selection of the first content reception device and a selection of a second input terminal among the plurality of input terminals, and a selection of a thumbnail corresponding to the second content, transmit the data of the second content data received through the second input terminal of the content transmission device to the first content reception device,
• wherein, when the first content reception device and the content transmission device are not paired when the first content reception device and the first input terminal are selected, display a screen for wireless pairing between the content transmission device and the first content reception device, wherein the screen for wireless pairing includes a pairing item,
• wherein, in response to a selection of the pairing item, a control signal for performing pairing between the content transmission device and the first content reception device is transmitted to the content transmission device, wherein a pairing completion signal is received from the content transmission device after pairing between the content transmission device and the first content reception device are completed,
• wherein, in response to the received pairing completion signal, the controller is configured to switch the pairing item to a start item and to display the start item, and
• wherein, in response to a selection of the start item, a data transmission start signal is transmitted to the content transmission device.