| 摘要 |
PURPOSE:To enable the transmission between the processor different from the transmission control step and the terminal device and to reduce the load of processor, by providing the conversion means of different transmission control step from the data processing circuit to different transmission control step, with the communication controller. CONSTITUTION:When a common control circuit 21a received data transmission from a processor 11, a control circuit on step 21b judges the transmission control step, selects data processing circuits 21d-f for data reception having the transmission control step and selects the data processing circuit 21d-f for data transmission in matching with the transmission control means of the transmission side terminals 31-33. Then, according to the reception/transmission of data, the step control circuit receives the reception data at the data processing circuit at reception side, and converts and moves the transmitted data to the data processing circuit at the transmission side. Further, the data transmission from the terminal side to the processor transmitted to a given terminal via the control circuit 21c on line can be converted and moved in the opposite step as the above. |
