| 摘要 |
PURPOSE:To perform multi-directional/multiplex communication without losing the safety of communication, by adding slave station discrimination information on an information signal for slave station to be transmitted to each slave station equipment. CONSTITUTION:A signal processing circuit 26 for master station adds the slave station discrimination information on the information signal for slave station to be transmitted to each of the slave station equipments 12-1-12-N. A signal processing circuit 46 for slave station detects the slave station information signal, and adds an discrimination information confirmation signal on the information signal to be returned from a slave station to a master station. And the signal processing circuit 26 for master station collates the slave station discrimination signal to be transmitted from the master station with a reception confirmation signal of discrimination information received by the master station, and thereby, the interception of the information signal for slave station to be transmitted to each slave station can be prevented from being generated. In such a way, it is possible to perform microwave multi-directional/ multiplex communication between at least one master station equipment and plural slave station equipments without losing the safety of the communication.
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