Head assembly having a table for storing a head offset and bias

Details Head assembly having a table for storing a head offset and bias Head assembly having a table for storing a head offset and bias

1995-12-15

2000-06-20

Faber, Alan

Dynamic magnetic information storage or retrieval

General recording or reproducing

Specifics of biasing or erasing

360 46, G11B 503

Patent

active

060784547

ABSTRACT:
When a combination head is on-tracked to an arbitrary cylinder position, a head position controller corrects a head position so as to eliminate an offset amount derived from an offset table. A bias current setting circuit obtains a current set value corresponding to an offset correction amount from a bias current table and supplies the bias current according to the current set value to an MR head. As kinds of offsets, there are a yaw angle offset, a thermal offset, and a core deviation offset.

REFERENCES:
patent: 4802033 (1989-01-01), Chi
patent: 5179667 (1993-01-01), Iyer
patent: 5339206 (1994-08-01), Takahashi
patent: 5412518 (1995-05-01), Christner et al.
patent: 5416646 (1995-05-01), Shirai
patent: 5615063 (1997-03-01), Kuroki et al.
patent: 5831782 (1998-11-01), Kohno et al.

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