| 摘要 |
PURPOSE:To transmit securely information which occurs newly even during display restoring by providing holding circuits of A-type and B-type on the slave station side, and the turning-on condition-variable memory and the condition individual memory on the master station side. CONSTITUTION:A-type holding circuits 11 and 21, and B-type holding circuits 12 and 22 are provided respectively in parallel on a slave station S1 side in correspondence to respective input circuits 1 and 2. Then, these outputs are added by adders 13 and 23, and the composite output is transmitted to a master station S2 side. On the other hand, the transmitted display information is received by condition individual memory devices 7 and 8, and turning-on condition-variable memory devices 74 and 84 respectively on the master station S2 side. These outputs are added by memory output adders 75 and 85, and they are set to be display output. Thus, information which occurs newly even during display restoring can be transmitted to the master station securely. |
