Electronic device and operating method therof

An electronic device configured to communicate with one or more source devices through a high-definition multimedia interface (HDMI), the electronic device comprising:

• a nonvolatile memory configured to store a consumer electronic control (CEC) command received from an external source;
• a volatile memory configured to temporarily store the CEC command;
• and
• processing circuitry configured to identify a CEC error of the one or more source devices based on the stored CEC command,
• the processing circuitry including,
• a transmission state register configured to store a state of the CEC command, and
• a first-in-first-out (FIFO) count register configured to count a number of responses to the CEC command received from the one or more source devices, and
• the processing circuitry is further configured to,
• identify the CEC error of the one or more source devices by comparing results output on the transmission state register associated with the CEC command and the FIFO count register,
• analyze the identified CEC error corresponding to the one or more source devices, and
• based on a result of the analyzing, provide troubleshooting information to a user of the electronic device regarding the identified CEC error corresponding to the one or more source devices.

An operating method of an electronic device, the electronic device configured to communicate with a first source device and a second source device through a high-definition multimedia interface (HDMI), the method comprising:

• identifying a consumer electronic control (CEC) error of the first source device and the second source device based on the communication between the electronic device, the first source device, and the second source device;
• analyzing the identified CEC errors of the first source device and the second source device using at least one error identification algorithm;
• and
• providing troubleshooting information to a user of the electronic device regarding the identified CEC errors of the first source device and the second source device based on results of the analysis.