Servo control apparatus

Details Servo control apparatus Servo control apparatus

1982-06-04

1984-12-11

Stellar, George G.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 78, G11B 555, G11B 558, G11B 2110

Patent

active

044881878

ABSTRACT:
Servo control apparatus including a recording head to read first and second servo data bytes stored across a track on opposite sides of a track centerline, a servo demodulator to count the first and second bytes and produce a resultant count representing any offset of the head relative to the centerline, a head positioner to move the head, and a microcomputer which controls the head positioner to position the head in response to the resultant count. The invention is implemented digitally, is simple and inherently compensates for expansion or contraction of the track to accurately center the head.

REFERENCES:
patent: 4157577 (1979-06-01), Porter, Jr. et al.

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