| 摘要 |
PURPOSE:To attain efficiently data transmission by adding the constitution that a transmission line connecting transmission devices having especially frequent information transfer is divided from a transmission line connected to other transmitters only at the transfer of information so as to double the transmission efficiency of the transmission line or over. CONSTITUTION:When an information transmitter 6 requests the transmission of lots of data in a file of an information transmitter 13 to an information transmitter 14, since the great deal of information between the information transmitter 13 and the information transmitter 14 is conducted the division of the transmission line 2 is informed to all information transmitters connected to the transmission line 2, the division is stored succeedingly in a memory 29, and when the division instruction of the transmission line comes to a control circuit 30 instructing the division of the transmission line to a control circuit 30, an output is fed to a control line 4 and a device driver output of a repeater 3 is brought into a high impedance state. Since the transmission line 2 is divided, the information transmitter 13 connected to the transmission line 2b can transfer many pieces of information with an adjacent information transmitter 15, and information transmitters 6-12 connected to the other transmission line 2b can transmit information between the devices without being affected by the information transfer of the information transmitters 13 and 14. |
