System for efficiently transferring data between a high speed channel and a low speed I/O device
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United States of America Patent
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-
Aug 22, 1989
Grant Date -
N/A
app pub date -
May 22, 1986
filing date -
May 22, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A buffer memory is used to store data from the input/output device arrayed corresponding to the data rate of said input/output data device. A threshold is selected for beginnig an unload cycle of the buffer memory which will permit said buffer memory contents to be completely transferred at the higher channel data rate to the channel during the remaining time additional data is being accumulated in the memory. The threshold selection is adaptive such that subsequent data block lengths are utilized to calculate a new threshold maintaining data transfer rates from the input/output device into the channel at an optimum value.
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