| 摘要 |
PROBLEM TO BE SOLVED: To prevent the time slot of time division multiplex communication from being wastefully consumed. SOLUTION: A station in the middle of time division multiple session, after transmitting data substance or when there is no data substance, intermediately sends a transmission finishing token 22 to a time division multiple controller. In response to this token the time division multiple controller sends a transmission permitting token 21 to the station of the next order. Thus the time division multiplex time slot varies corresponding to the quantity of transmission data to prevent the wasteful consumption of the time slot. |
