Head positioning system for magnetic recording/playback apparatu

Details Head positioning system for magnetic recording/playback apparatu Head positioning system for magnetic recording/playback apparatu

1984-10-05

1986-11-11

Stellar, George G.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

G11B 555

Patent

active

046226036

ABSTRACT:
A magnetic storage disk tracking system employing a stepping motor is operable to compensate the tracking error within a certain expected range caused by the hysteretic movement of the motor. The system incorporates means for recognizing the track to which the magnetic head is positioned and memory means in which is stored data for compensating the positioning error depending on each track. The stepping motor is controlled through the excitation voltage of each winding under modulation in terms of the magnitude or duty cycle in compliance with the stored data.

REFERENCES:
patent: 4499510 (1985-02-01), Harding et al.

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