Time based data retention in a variable data rate disk drive

Details Time based data retention in a variable data rate disk drive Time based data retention in a variable data rate disk drive

1995-06-30

1998-01-20

Lall, Parshotam S.

395250, G06F 1300

Patent

active

057109435

ABSTRACT:
The present invention provides a method and apparatus for assuring that the desired data is transferred between a variable rate disk drive and a host system during read and write operations. The invention involves retaining a variable amount of data in a buffer memory after the data has been transferred between the buffer memory and a magnetic disk with the variable amount of data retained based upon a predetermined fixed period of time associated with error conditions and a disk transfer rate. If an error condition is detected during a transfer of data between the buffer memory and the disk, all of the retained data may be retransferred after the error condition has been corrected.

REFERENCES:
patent: 5235692 (1993-08-01), Ayres et al.
patent: 5241666 (1993-08-01), Idleman et al.
patent: 5249271 (1993-09-01), Hopkinson et al.
patent: 5303349 (1994-04-01), Warriner et al.
patent: 5398253 (1995-03-01), Gordon

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