Display system for sensing defect on large-size display

A server comprising:

• a display;
• a communication circuit configured to receive first content from an external server and to receive second content from a photographing device;
• a processor configured to generate a plurality of error patterns of the first content;
• and
• a memory configured to store the plurality of error patterns,
• wherein the processor is further configured to:
• determine whether a defect is present on a display device, by comparing the received second content, which is obtained by the photographing device photographing the display device, with the stored plurality of error patterns;
• and
• control the display to display a result of the determination,
• wherein the first content includes first content having an error pattern and first content having no error pattern;
• and
• wherein the processor is further configured to process, through a specified synthesis manner, the first content having the error pattern and the first content having no error pattern to generate the plurality of error patterns.

A method for detecting a defect on a display device, the method comprising:

• receiving first content from a server and receiving second content from a photographing device, wherein the first content includes first content having an error pattern and first content having no error pattern;
• processing, through a specified synthesis manner, the first content having the error pattern and the first content having no error pattern to generate a plurality of error patterns of the first content;
• determining whether the defect is present on the display device by comparing the received second content, which is obtained by the photographing device photographing the display device, with the generated plurality of error patterns;
• and
• displaying a result of the determination.