Head position control system with multiple servo areas staggered

Details Head position control system with multiple servo areas staggered Head position control system with multiple servo areas staggered

1987-05-26

1989-02-21

Faber, Alan

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 7804, 360 9801, G11B 5596

Patent

active

048070637

ABSTRACT:
Two reference information storage regions are arranged on each major surface of each disc with an angular spacing of 360.degree./4N (where N is the number of discs). The reference information storage regions for the respective discs are equiangularly displaced from each other, so that the reference information is read out from the angularly displaced reference information storage regions during each one rotation of the disc so as to detect a displacement of the head from its normal or proper position every time that the reference information is read out, and the displacement of the head is corrected in accordance with the detected displacement.

REFERENCES:
patent: 4737869 (1988-04-01), Sugaya et al.

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