Precision alignment system for information storage devices

Details Precision alignment system for information storage devices Precision alignment system for information storage devices

1982-08-03

1985-02-12

Stellar, George G.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 78, G11B 558, G11B 2110

Patent

active

044995105

ABSTRACT:
A method is disclosed for accurately registering read-write heads on a magnetic storage medium. It includes the steps of ascertaining fractional departures of track locations from the nominal locations; providing a control for a motor connected to move a read-write head capable of detecting and storing fractional values of the nominal channel spacing; and coupling the control digitally to a stepping motor or servomotor so as to drive the read-write head accurately to the actual position of any selected track. Also, apparatus for practicing the method, various apparatus being disclosed.

REFERENCES:
patent: 3977024 (1976-08-01), Haneji et al.
patent: 4136365 (1979-01-01), Chick et al.
patent: 4157577 (1979-06-01), Porter, Jr. et al.
patent: 4378519 (1983-03-01), Duvall
patent: 4395742 (1983-07-01), Ostroff
patent: 4445153 (1984-04-01), Fujimoto et al.
IBM Technical Disclosure Bulletin, vol. 20, No. 5, Oct. 1977, pp. 1893-1896, Multitracks Per Inch Actuator/Accessing Arrangement, T. M. Paska.

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