Terminal and controlling method thereof

A non-transitory computer readable storage medium having a processing program stored thereon, wherein the processing program is configured to cause a processor of a display device to perform:

• establishing communication between an external mobile device and the display device to receive screen information displayed on the external mobile device;
• displaying the screen information displayed in the external mobile device in a first region of a screen of the display device, wherein the screen information includes a first image corresponding to a first file stored in the external mobile device and a virtual manipulation unit corresponding to a physical manipulation unit provided at a main body of the external mobile device;
• displaying a second image corresponding to a second file stored in the display device or another device connected to the display device in a second region of the screen of the display device, wherein the first region and the second region are displayed together on the screen of the display device;
• in response to receiving a first drag input starting on the first image in the first region and ending at a location within the second region, storing the first file in the display device or the another device and displaying a third image corresponding to the first file in the second region, wherein the first image in the first region has a different appearance than the third image in the second region;
• in response to receiving a second drag input starting on the second image in the second region and ending at a location within the first region, transmitting the second file to the external mobile device;
• and
• in response to a user input on the virtual manipulation unit in the first region, transmitting a signal from the display device to the external mobile terminal for controlling the external mobile terminal.

A display device comprising:

• a communication unit configured to establish communication between an external mobile device and the display device;
• and
• a controller configured to:
• receive screen information displayed on the external mobile device,
• display the screen information displayed in the external mobile device in a first region of a screen of the display device, wherein the screen information includes a first image corresponding to a first file stored in the external mobile device and a virtual manipulation unit corresponding to a physical manipulation unit provided at a main body of the external mobile device,
• display a second image corresponding to a second file stored in the display device or another device connected to the display device in a second region of the screen of the display device, wherein the first region is spaced apart from the second region on the screen of the display device,
• in response to receiving a first drag input starting on the first image in the first region and ending at a location within the second region, store the first file in the display device or the another device and display a third image corresponding to the first file in the second region, wherein the first image in the first region has a different appearance than the third image in the second region;
• in response to receiving a second drag input starting on the second image in the second region and ending at a location within the first region, transmit the second file in the external mobile device;
• and
• in response to a user input on the virtual manipulation unit in the first region, transmit a signal from the display device the external mobile terminal for controlling the external mobile terminal.