| 摘要 |
PROBLEM TO BE SOLVED: To provide a data re-transmission system where reduction in a data transfer efficiency due to frequent occurrence of data re-transmission is prevented in the case of re-transmitting data. SOLUTION: After transmission of a maximum outstanding information frame number '5' to a terminal 10 from a data transmission control means 6 of a host computer system 1, when data are re-transmitted to the terminal 10, a data re-transmission monitor means 3 informs a statistic information storage means 4 of re-transmission information of data transmitted from the host computer system 1 to the terminal 10, a transmission data quantity discrimination means 5 allows a maximum transmission available data number revision means 7 to change the information into a maximum outstanding information frame number '1' based on a data quantity of the statistic information storage means 4 and allows the maximum transmission available data number revision means 7 to gradually increase the maximum outstanding information frame number '1' to be restored to the number '5', after the completion of the data re-transmission.
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