Read circuit in magnetic disk drive

Details Read circuit in magnetic disk drive Read circuit in magnetic disk drive

1991-08-28

1994-06-07

Sikes, William L.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 7814, 360 46, 360 67, G11B 5596, G11B 558

Patent

active

053195086

ABSTRACT:
According to this invention, in a magnetic disk device for recording/reproducing data using a magnetic head, a position of which is controlled by a sector servo method, a tracking speed of an AGC amplifier is set to be a first speed (about 10 .mu.s) in an AGC address area and an AGC burst area, and the tracking speed of the AGC amplifier is set to be a tracking speed (about 20 ms) lower than the first tracking speed in an intersector gap, a gap, a block address area, and a data area.

REFERENCES:
patent: 3660821 (1972-05-01), Weber et al.
patent: 3790896 (1974-02-01), Shimizu et al.
patent: 4326226 (1982-04-01), Touchton et al.
patent: 4823212 (1989-04-01), Knowles et al.
patent: 5184257 (1993-02-01), Koga et al.
patent: 5187619 (1993-02-01), Sidman

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