Constantly monitors TS signals on a redundant circuit, and switches the output swiftly to the normal line when an error occurs without disrupting output to achieve automatic seamless switching.

This TS automatic seamless switcher constantly monitors two TS signals output from the same encoder on a redundant circuit for errors, and switches the output automatically and seamlessly to the normal line when an error occurs in the selected line. This protects the signal from errors occurring in the transmission path, and further increases the reliability of duplex transmission.