| 摘要 |
PURPOSE:To improve the efficiency of transmission without transmitting again a transmitted part, by interrupting a non-priority data under transmission to transmit a priority data and then transmitting continuousely the interrupted non- priority data from the interrupted point. CONSTITUTION:Non-priority data are stored to a transmitting buffer 120 and then transmitted by a transmission control circuit 140. When a transmission request control circuit 110 receives a priority data transmission request 111, the untransmitted non-priority data left at the buffer 120 is temporarily transferred to an interrupting buffer 130. Then priority data are stored to the buffer 120 and transmitted. When the transmission is over, the interruption data of the buffer 130 is transferred to the buffer 120 by a transmission end signal 114. Thus the non-priority data is transmitted again. Therefore the only data obtained after an interruption is transmitted for the interruption data. This improves the transmitting efficiency of data. |
