| 摘要 |
PURPOSE:To attain accurate synchronous operation by checking synchronizing signals of other systems on the basis of that of the own system to detect whether a normal synchronizing signal leading or lagging and by correcting the own system. CONSTITUTION:Synchronizing signals TPb and TPc of other systems are inputted to synchronism deciding circuit 2. Synchronism deciding circuit 2 detects the rise and fall of synchronizing signals of other systems by using its-system leading signal FSP and its-system lagging signal LTP leading and lagging by constant phases, thereby deciding whether synchronizing signals of other systems are abnormal. When synchronizing signals of other systems are normally generated, the phase shift between the synchronizing signal of its system and those of other systems is further checked and information on leading and lagging is inputted to the majority-decision logic circuit to correct the synchronizing signal of its system. |
