| 摘要 |
PURPOSE:To enable stable transmission through a space directly without requiring any transmission medium such as an optical fiber or the like by transmitting input data information as data information in a transmission format when an address is coincident, and preventing the data information from being transmitted at least when the address is not coincident. CONSTITUTION:A receiving signal (a) is converted to parallel address information (c) by an address part serial/parallel converter 2 and compared with an address set by a set switch 4 by an address information comparator 5 and when the address is not coincident, a transmission changeover switch 8 is changed over to a terminal 2. When the address is coincident, the transmission changeover switch 8 is changed over to a terminal 3, and the data information is replaced with information serially converting the parallel input data by a data part parallel/serial converter 6. Only when the address of a slave station 11 is not overlapped, a master station 10 receives only the signal from an accessed slave station 11a, and the signal can be received without being interfered by the other slave station 11. Thus, stable communication is enabled. |
