| 摘要 |
PURPOSE:To shorten the data transfer time on a communication line by curtailing the communication data by using a compression processing program. CONSTITUTION:A system A is constituted by adding a compression processing program 2A and an expansion processing program 3A to a communication program 1A and a communication control mechanism 4A, and a system B is also constituted by adding a compression processing program 2B and an expansion processing program 3B to a communication control mechanism 4B and a compression processing program 2B. In such a state, in the case the same character-string of the maximum 4096 bytes in which one character or two characters in communication data are continued is compressed to 4 bytes, and the character-string is a numerical type, a different character-string of the maximum 9 bytes is compressed to 4 bytes or below, and its communication data is expanded and restored at the time of reception. In such a way, the time required for the transmission/reception processing of the communication data is shortened.
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