Patent attributes
An auto-detection system for communication protocol includes a driving device, a communication mode selection circuit and a human-machine interface circuit. The human-machine interface circuit transmits a detection signal to the driving device through the communication mode selection circuit. The detection signal includes a transmission speed identification and a transmission mode identification. The driving device sets its transmission speed according to the value of the transmission speed identification of the detection signal and sets its transmission mode according to the transmission mode identification of the detection signal. An auto-detection method for communication protocol using the auto-detection system for communication protocol is also provided.