Patent ID: 11942019
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  A  H | IPC A  G

Claim 12:
13. The method of claim 10,
wherein the communication interface further comprises:
an input terminal for receiving an input of a signal output from the external apparatus, and
a detection circuit connected to the input terminal,

wherein the detection circuit comprises:
a resistance, and a transistor of which a first end is connected with the input terminal, of which a second end is connected to the resistance, and of which a third end is connected with a ground,

wherein the transistor is turned on or turned off based on a level of a signal applied to the first end, and
wherein the identifying whether the external apparatus failed to read the EDID information comprises:
monitoring a signal output from the external apparatus based on a level of a signal applied to the second end according to the turning-on or turning-off of the transistor.