Seek system for a magnetic disk apparatus

Details Seek system for a magnetic disk apparatus Seek system for a magnetic disk apparatus

1992-03-25

1994-04-26

Heckler, Thomas M.

Boots, shoes, and leggings

364DIG1, 3642362, 3642217, 3642601, 3642629, 360 75, G06F 1310, G06F 1130

Patent

active

053074890

ABSTRACT:
In a magnetic disk processing apparatus, read command processing instructs reading data out to compare a physical address (PA) of data which has been read out with a PA being retained. If the addresses coincide with each other, then processing returns to a command executing operation and, if not, after a flag condition is ascertained by a flag determining operation, a seek command is issued for a PA being stored independently of the software. A flag indicates that a seek command, resulting from a mismatch of a comparison, has been completed and the processing returns to read command processing. In this manner, any seek error caused by a mismatch of seek address management which occurs between a seek command from software and a patrol seek is compensated for.

REFERENCES:
patent: 4697213 (1987-09-01), Kitamura
patent: 5150266 (1992-09-01), Albert
patent: 5185681 (1993-02-01), Volz et al.
patent: 5191568 (1993-03-01), Muto et al.

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