| 摘要 |
PURPOSE:To attain the multiplex transmission of data between a computer and a terminal with satisfactory cost performance, by transmitting data to the terminal after transmitting them once through a divided and multiplexed bus in a system where the data of a computer are transmitted to the terminal through plural transmission lines. CONSTITUTION:For a transmission line multiplexing device 24, computer interfaces 242-244 and transmitter interfaces 245-247 are connected to a bus 100. The bus 100 is time-divided and multiplexed by the channel numbers produced from a control part 241. A transmission line multiplexing device 34 has the same constitution as the device 24. The data of computers 21-23 are delivered to transmission lines 28-30 via the bus 100 within the device 24. At the same time, the reception data are delivered to terminal devices 35-37 via a bus 200 within the device 34. Thus if a transmission line has a fault, the generation of a time- division channel is stopped within the bus 100 corresponding to the faulty transmission line. Then the data are transmitted by other channels. Thus it is not needed to prepare a spare transmission line for each transmission line. |
