| 摘要 |
PURPOSE:To realize a communication control method which is highly flexible and also can transmit the important contents of transmission in an assured way, by setting the priority and then putting forcedly the terminal unit having a low priority under the reception state in case the terminal unit of a high priority is under the transmission state. CONSTITUTION:Priority circuit 4 sets the priority to terminal units 1a-1n each. Thus, for example, unit 1a has the highest priority, and then the lower levels of priority are given to units 1b, 1c... in that order. In case unit 1c is put under the transmission state by the command, all of other units receive the transmission sent from unit 1c. In such case, if the transmission command is given to unit 1d having a lower priority than unit 1c, unit 1d is kept forcedly under the reception state to receive the transmission of unit 1c. On the contrary, in case unit 1a having a higher priority than unit 1c has transmission, unit 1c is set forcedly under the reception state to receive the transmission of unit 1a. |
