System for positioning single gap magnetic head to follow moving

Details System for positioning single gap magnetic head to follow moving System for positioning single gap magnetic head to follow moving

1978-10-27

1980-05-20

Wolff, John H.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360109, G11B 2110

Patent

active

042042348

ABSTRACT:
Track following of a data track by a data head is accomplished by successively sampling data signals along the data track, storing the sensed signals in a data processor, computing the maximum amplitudes or crests of the successive signals, and servoing the data head towards the path defined by the maximum amplitude data signals. The data signal amplitudes and the crest values are continuously updated and employed for the servo function. A conventional read-write head having a single transducing gap of a width substantially the same as that of the data track width is used for sensing the recorded data signals.

REFERENCES:
patent: 3246307 (1966-04-01), Stanley
patent: 3293627 (1966-12-01), Auyang et al.
patent: 3491347 (1970-01-01), Farrand
patent: 4074326 (1978-02-01), Smith
patent: 4104684 (1978-08-01), Wakami et al.
I.B.M./T.D.B. vol. 16, No. 5, Oct. 73 pp. 1379-1380, "Magnetic Head Position Sensing" by Bush et al.

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