Control method for extender

摘要

A control method for extender is proposed. A transmitting unit stops outputting image signal, voice signal or serial data to a receiving unit. A request signal is sent from the transmitting unit to the receiving unit by using the circuit through which the transmitting unit stops outputting image signal, voice signal or serial data to the receiving unit. Extended display identification data of a display device or peripheral data of a control device is sent from the receiving unit to the transmitting unit.