Patent ID: 6845413

Claim:
A switchover device for effecting a switchover control among a plurality of information sources as well as among a plurality of information processing devices, such that information transmitted from the plurality of information sources are supplied to the plurality of information processing devices in a predetermined manner, the switchover device comprising: a plurality of input terminals connected with the plurality of information sources; a first output terminal and a second output terminal connected with the plurality of information processing devices; switchover connection devices for controlling the switchover connection between the plurality of input terminals on one hand and the first, second output terminals on the other; and a switchover control device for controlling the switchover of the switchover connection devices; wherein during a process in which an information transmitted from one information source is supplied to the plurality of information processing devices, once there is an interrupt request for supplying an information transmitted from another information source to the information processing devices, the switchover control device operates to control switchover connection device to stop supplying information between the first output terminal and one input terminal connected with said one information source, and to enable supplying information between the first output terminal and another input terminal connected with said another information source, further to keep supplying information between the second output terminal and an input terminal connected with said one information source.