| 摘要 |
<p>PURPOSE:To enable detection of trouble in a transmission system across two operating system by outputting every input signal to these two operating systems and outputting the result of operation executed through one operating system to the other system. CONSTITUTION:A transmission interface 11 outputs every input speed signal fed from a receiver 1 through a transmission path (b) to first and second operating systems 12, 13. The first and second operating systems 12, 13 compare the received speed signal with a predetermined value. Every time when a signal is fed from the transmission interface 11, result of operation under execution is outputted through transmission paths (c), (d) to the other operating system. Then the result of operation executed through the other system is compared with the result of corresponding operation in its system, and a trouble detection signal is outputted when the comparison results do not match.</p> |
