| 摘要 |
1:N duplex communication equipment which has a host device and slave devices interconnected in a ring form is disclosed. In the equipment, the path distributing part 3 of the host device transmits an identical path to the two-way transmission line of the ring, and a path selecting part 4 selects a normal one of paths from the two-way transmission lines. The path distributing part 6 of each slave device distributes a path from one transmission line to the other transmission line and the path selecting part. A path selecting part 5 selects paths sent from the host device through the two-way transmission lines from the path distributing part. A path selecting part 8 selects a path sent from another slave device through the two-way transmission lines and outputs this path to a transmitted data control part 9. The transmitted data control part 9 selects data to be transmitted to the host device from received data in the selected path and transmitted data of its own device. A path transmitting part 10 transmits data from the transmitted data control part through the paths of the two-way transmission lines. Thus, 1:N bi-directional communication is performed by a smaller number of paths.
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