SINK DEVICE, DIGITAL SYSTEM AND METHOD OF CONTROLLING CEC COMMUNICATION

• Main Authors: CHO, BONGCHAN, JANG, DOOYOUNG, NG, TECKSHENG, KANG, SEONGIN, CHOI, HYEONGSU
• Format: Patent
• Language: English
• Published: 29.02.2024
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; PICTORIAL COMMUNICATION, e.g. TELEVISION

A method of controlling consumer electronics control (CEC) communication between a sink device and a plurality of source devices connected through high-definition multimedia interface (HDMI) cables may include; generating cable connection information by monitoring whether the HDMI cables are respectively connected to a HDMI port among a plurality of HDMI ports of the sink device, generating CEC error information by monitoring whether a voltage of an internal CEC node is fixed, wherein CEC lines included in connected HDMI cables are commonly connected to the internal CEC node and the connected HDMI cables indicate present connection to the plurality of HDMI ports, and executing a user guide to diagnose a stuck state of the CEC lines of the connected HDMI cables in response to the cable connection information and the CEC error information.