Display device, modular display device, and control method therefor

A control method of a display device, of a modular display device comprising a plurality of display devices including the display device and a plurality of other display devices arranged at different sides of the display device, the method comprising:

• identifying, based on a first signal transmitted by a main control box being received through a first communication interface among a plurality of communication interfaces respectively provided at four directions based on a front surface of the display device, the first communication interface as having received the first signal along a main connection path;
• based on receiving the first signal through the first communication interface, controlling a plurality of remaining communication interfaces among the plurality of communication interfaces, other the first communication interface, to output the first signal to the plurality of other display devices, respectively;
• based on controlling the plurality of remaining communication interfaces to output the first signal to the plurality of other display devices, identify, among the plurality of remaining communication interfaces, a second communication interface as having transmitted the first signal along the main connection path based on a feedback signal indicating a receipt of the first signal being received through the second communication interface;
• and
• identifying, based on a second signal transmitted by a sub control box being received through the second communication interface among the plurality of communication interfaces, the second communication interface as having received the second signal along a sub connection path,
• wherein the main connection path is for sequentially transmitting the first signal transmitted by the main control box to the display devices, and
• wherein the sub connection path is for sequentially transmitting the second signal transmitted by the sub control box to the display devices in a reverse order than the main connection path.

A non-transitory computer-readable recording medium including a program which, when executed by a display device of a modular display device comprising the display device and a plurality of other display devices arranged at different sides of the display device, to perform a control method, the control method comprising:

• identifying, based on a first signal transmitted by a main control box being received through a first communication interface among a plurality of communication interfaces respectively provided at four directions based on a front surface of the display device, the first communication interface as having received the first signal along a main connection path;
• based on receiving the first signal through the first communication interface, controlling a plurality of remaining communication interfaces among the plurality of communication interfaces, other the first communication interface, to output the first signal to the plurality of other display devices, respectively;
• based on controlling the plurality of remaining communication interfaces to output the first signal to the plurality of other display devices, identify, among the plurality of remaining communication interfaces, a second communication interface as having transmitted the first signal along the main connection path based on a feedback signal indicating a receipt of the first signal being received through the second communication interface;
• and
• identifying, based on a second signal transmitted by a sub control box being received through the second communication interface among the plurality of communication interfaces, the second communication interface as having received the second signal along a sub connection path,
• wherein the main connection path is for sequentially transmitting the first signal transmitted by the main control box to the display devices, and
• wherein the sub connection path is for sequentially transmitting the second signal transmitted by the sub control box to the display devices in a reverse order than the main connection path.