Automatic scan tracking using a magnetic head supported by a pie

Details Automatic scan tracking using a magnetic head supported by a pie Automatic scan tracking using a magnetic head supported by a pie

1976-03-22

1979-04-24

Eddleman, Alfred H.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360107, 360109, G11B 2110, G11B 552, G11B 2118

Patent

active

041515706

ABSTRACT:
A magnetic head, rotating at high speed in a reproduce relationship with a magnetic tape, is supported on the free end of a piezoelectric bender element. The bender element is caused to vibrate between two limits at a fixed frequency (dither) to determine the instantaneous position of the magnetic head relative to a track of data recorded along the tape. A feedback servo provides continuous adjustment of the position about which the transducer is vibrated so as to maintain the magnetic head in an optimum reproduce relationship with respect to the track.

REFERENCES:
patent: 3126535 (1964-03-01), Streeter
patent: 3155830 (1964-11-01), Knight
patent: 3263031 (1966-07-01), Welsh
patent: 3501586 (1970-03-01), Russell
patent: 3526726 (1970-09-01), Corbett et al.
patent: 3544718 (1970-12-01), Adler
patent: 3778560 (1973-12-01), Precin et al.

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