Disk apparatus for monitoring error by setting timeout time upon

Details Disk apparatus for monitoring error by setting timeout time upon Disk apparatus for monitoring error by setting timeout time upon

1995-12-05

1997-12-09

Psitos, Aristotelis M.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 7807, G11B 555

Patent

active

056966466

ABSTRACT:
Seek operation of a seek control section is monitored by an error monitoring section, and when a seek operation does not end normally, the control is forcedly switched over to fine control by the on-track control section without reporting the error to the higher-level controller. The error monitoring section variably sets a seek timeout time Ts depending on the seek distance between the current position of the head and the target position at the start of seek, for example. When the seek timeout time Ts elapses before the target position is reached, it is judged as an error.

REFERENCES:
patent: 4803572 (1989-02-01), Haruna et al.
patent: 5010425 (1991-04-01), Asai
patent: 5231550 (1993-07-01), Hashimoto
"Method of Calculating Seek Times for Disk Drives," IBM TDB vol. 29, No. 6, Nov. 1986, pp. 2551-2554.

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