Patent ID: 7873056

Claim:
A switch device comprising: a switch portion including a plurality of first input ports and a plurality of first output ports; an input side port mapping portion for inputting the signals input to a plurality of second input ports to the first input port of the switch portion through one third output port, the input side port mapping portion including the plurality of second input ports and the one third output port; an output side port mapping portion for outputting the signals output from the first output port of the switch portion from a plurality of second output ports through one third input port, the output side port mapping portion including the plurality of second output ports and the one third input port; and a central controller for carrying out a control, which allocates the signals input to the plurality of second input ports to the first input port of the switch portion, to the input side port mapping portion, carrying out a control, which allocates the signals output from the first output port of the switch portion to a plurality of second output ports, to the output side port mapping portion, and controlling the connections between the plurality of first input ports and the plurality of first output ports of the switch portion.