| 摘要 |
PURPOSE:To improve the efficiency of data transfer by extracting data from a buffer in accordance with a fixed order, connecting them and forming a transfer unit. CONSTITUTION:While checking whether plural buffers 16 to which level numbers corresponding to the processing order of data are applied are unused or not by a connecting means 14 in the order of the level numbers, data are stored in the unused buffers. Whether the data length of data to be stored in the buffer 16 exceeds a transfer available length or not is checked by a dividing means 18, and when the length exceeds, the data are divided at that point of time and data overflowing from the capacity of the buffer 16 are stored in the unused buffer 16 of the succeeding level number. After storing data in the buffers 16, the data are extracted from respective buffers 16 and connected in accordance with an independently fixed order to form a transfer unit and transfer data to an opposite information processor 12 through a communication line 19.
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