Computer switch and a computer switching method

The present invention discloses a computer and a computer switch switching method, to obtain an input signal from the user interface device, and uses this operation terminal processor input signals into packets. The packet to the remote processor and the remote processor using the update command is generated in accordance with the packet. This update command is transmitted to the operating side processor, and generates a display screen on the screen according to the update command. This is superimposed on the display screen to a video signal from the plurality of computers, and the superimposed video signal output to the user interface device.