Reference track detection for a disc storage unit

Details Reference track detection for a disc storage unit Reference track detection for a disc storage unit

1988-12-21

1991-05-07

Canney, Vincent P.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 7813, G11B 555, G11B 2108

Patent

active

050141392

ABSTRACT:
Servo information is written in advance by distinctly defining the boundary between a servo information area into which the servo information is written and a blank area into which the servo information is not written in a manner that the boundary has a predetermined relationship with a reference track as a reference for a head position to be detected. The reference track is detected by displacing the head to read out the servo information so that the boundary is detected while the head is being displaced. The reference track is detected by computing a radial position of the detected boundary.

REFERENCES:
patent: 4683504 (1987-07-01), Cantello et al.
patent: 4685007 (1987-08-01), Nazarian et al.
patent: 4745497 (1988-05-01), Ozawa
patent: 4875114 (1989-10-01), Moteki
patent: 4876618 (1989-10-01), Ide et al.
patent: 4884152 (1989-11-01), Ide

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