Data transfer control method for controlling transfer of data through a buffer without causing the buffer to become empty or overflow
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United States of America Patent
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Nov 24, 1998
Issued Date -
N/A
app pub date -
Dec 18, 1996
filing date -
Oct 5, 1993
priority date (Note) -
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Abstract
A data transfer control system in a data transfer apparatus including a plurality of data processing units having different data transfer speeds and a temporary holding circuit provided between the data processing units for temporarily holding data transferred between the data processing units. The data transfer apparatus sends a transfer request for data corresponding to a data storage capacity of the temporary holding circuit of the data transfer apparatus to the data processing unit on the side of sending data and sends a transfer request for data corresponding to the data storage capacity of the temporary holding circuit after an elapse of a delivering time of data to an information processing unit on the data transferred side of the temporary holding circuit from the time the data transfer request is sent until the requested data from the data processing unit on the data sending side reaches the temporary holding circuit of the data transfer apparatus.
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