Electronic apparatus and control method thereof

An electronic apparatus comprising:

• a signal output circuit configured to connect with an external apparatus connected to a display apparatus,
• a processor configured to control the electronic apparatus to:
• obtain information about a first image format supported in the display apparatus from the external apparatus,
• output a content signal having the first image format to the external apparatus through the signal output circuit to the display apparatus based on identifying that the external apparatus supports an interface protocol capable of transmitting the content signal having the first image format, and
• output a content signal having a second image format different from the first image format to the external apparatus through the signal output circuit based on identifying that the external apparatus does not support the interface protocol,
• wherein the processor is configured to identify that the external apparatus supports the interface protocol, based on separately identifying that the external apparatus supports a mode of decompressing compressed image data.