Electrical computers and digital processing systems: memory – Storage accessing and control – Hierarchical memories
Patent
1998-10-20
2000-08-08
Nguyen, Hiep T.
Electrical computers and digital processing systems: memory
Storage accessing and control
Hierarchical memories
711 4, 711111, 710 30, 710 32, 710 34, 710 48, 710 52, 710 57, 710 59, 710 60, G06F 1208
Patent
active
06101575&
ABSTRACT:
A tape storage device is used in conjunction with a host computer to archive data. The storage device has interface logic that buffers blocks of data from the host computer in a memory buffer. The interface logic processes data as the data is received to create a processed data block that is smaller in size than the original, unprocessed data block. While receiving elements of the data block, the interface logic repeatedly determines the amount of free memory in the memory buffer, and temporarily suspends the block transfer whenever the amount of free memory falls below a predetermined threshold. The block transfer is resumed when the amount of free memory becomes equal to or greater than the threshold. This utilizes nearly all available memory, while preventing buffer overflow, without any need to perform complex calculations to predict the size of the data block after processing.
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Simms Mark J.
Takasugi R. Alexis
Hewlett--Packard Company
Nguyen Hiep T.
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