Sink device, source device, and method for controlling the same

A first electronic device comprising:

• at least one memory;
• at least one transceiver;
• and
• at least one processor operatively connected with the memory and the transceiver, the at least one processor configured to:
• transmit first extended display identification data (EDID) information comprising a first block structure to a second electronic device;
• receive audio/video (AV) data from the second electronic device;
• identify an output state of the AV data;
• based on a determination that the output state of the AV data is identified as abnormal, requesting a first parameter to the second electronic device, wherein the first parameter is related to a number of blocks of second EDID information stored in a memory of the second electronic device among the first EDID information transmitted to the second electronic device;
• generate third EDID information comprising a second block structure based on at least one of:
• (i) the first parameter, (ii) a second parameter related to a number of acknowledgments (ACKs) obtained based on storing the first EDID information in the at least one memory of the first electronic device, and (iii) a third parameter related to a number of blocks of fourth EDID information previously stored in the at least one memory of the first electronic device;
• and
• transmit a hot plug detect (HPD) signal for transmitting third EDID information comprising the second block structure to the second electronic device.