| 摘要 |
<P>PROBLEM TO BE SOLVED: To realize a duplex processor system which prevents the simultaneous occurrence of the mulfunction of hardware in duplicated processors on both sides. <P>SOLUTION: In the duplex processor system, a first processor device is connected to a second processor device and one of the processor devices actually operates and the other processor device is on standby. The first and second processor devices are provided with; an A-system MPU and a B-system MPU which execute the same control computation, respectively; a selection device which is connected to the A-system and B-system MPUs, outputs the data of either the A-system MPU or the B-system MPU when the data are outputted to the outside, and inputs data to the A-system and B-system MPUs both when the data are inputted from the outside; an MPU-side data conversion means which is provided in at least either the A-system MPU or the B-system MPU; and selection device-side data conversion means which are provided in connecting lines between the selection device and the MPUs provided with the MPU-side data conversion means. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
