| 摘要 |
PURPOSE:To maintain the high rate of operation by comparing the output of each module of majority decision constitution to that of a majority-deciding circuit for detecting the fault of the module and then by determining the chance of resynchronization according to a frequency in fault. CONSTITUTION:When frequency f1i in output dissidence exceeds constant n0 before timer 370 clocks a fixed time, status register 350 informs control circuit 360 of that via line 354 and control circuit 360 indicates the start of resynchronization. On the start of resynchronization, counters 341-343 count frequency f2i in output dissidence in terms of modules 311-313 and then send their count contents via gates 344-346 to comparator 380 for comparisons to constant n2. One of the count contents, when exceeding constant n2, is displayed on a corresponding display units among units 381-383 while the module is considered to have run into permanent trouble, and control circuit 360 is informed of that via line 398 to obtain a signal for the reconstitution of the system. |
