Display system including sub display apparatuses and method of driving the same

A display system comprising:

• a display region including a plurality of sub display apparatuses, a sub display apparatus of the plurality of sub display apparatuses comprising:
• a sub display panel including a plurality of pixels;
• and
• a panel driver;
• and
• a host processor which divides source image data into a plurality of sub input image data corresponding to the plurality of sub display apparatuses, and provides the sub input image data to the plurality of sub display apparatuses, the host processor including:
• a data generator including a counter,
• wherein the panel driver receives corresponding sub input image data among the plurality of sub input image data and drives the sub display panel based on the corresponding sub input image data,
• the data generator senses information of the plurality of sub display apparatuses included in the display region and determines a number of the plurality of sub display apparatuses, and
• the data generator includes a sensing signal generator which outputs a first sensing signal in a first direction of the display region and outputs a second sensing signal in a second direction perpendicular to the first direction, and
• the counter receives the first sensing signal and the second sensing signal, calculates a voltage drop of the first sensing signal and a voltage drop of the second sensing signal and determines the number of the plurality of sub display apparatuses included in the display region based on the voltage drop of the first sensing signal and the voltage drop of the second sensing signal.