| 摘要 |
PURPOSE:To increase the speed and the reliability of communication by checking the propriety of data in real time and to minimize the retransmitted data. CONSTITUTION:The feedback transmission data receiving circuits 94a and 94b and feedback transmission data error detecting circuits 93a and 93b are provided to the data transmission parts of communication stations 1 and 2 which performs data communication in addition to data transmitting circuit 92a and 92b. While the reception data feedback circuits 96a and 96b are provided to the data reception parts of the stations 1 and 2 in addition to data receiving circuits 95a and 95b. Furthermore a transmission line 97 and a transmission data feedback line 98 are provided at a transmission line part which connects the stations 1 and 2 along with a reception line 99 and a reception data feedback line 100 provided at a reception line part. Then the reception data of circuits 94a and 94b are compared with their transmission data for each transmission unit data by circuits 93a and 93b via the line 98. Thus an error of the transmission data is detected, and the retransmission is carried out for the fault data. |
