Magnetic head and apparatus for automatically adjusting the azim

Details Magnetic head and apparatus for automatically adjusting the azim Magnetic head and apparatus for automatically adjusting the azim

Filed on

1983-10-24

Date issued

1987-01-27

Examiner

Wolff, John H.

Patent Class

Dynamic magnetic information storage or retrieval

SubClass

Head

SubSubClass

Core

Other Related Categories

360125, 360 76, 360119, 360123, G11B 5147, G11B 5127, G11B 500, G11B 2020

Type

Patent

Status

active

Patent number

046398120

Description

ABSTRACT:
A magnetic head has a core which has first and second core parts on opposite sides of a vertically extending gap, the core parts each consisting of upper and lower core pieces. The upper core piece of the first core part and the lower core piece of the second core part each have a thickness in a direction extending parallel to the gap which is greater than the thickness of the associated core piece, and each has a portion encircled by a coil. The magnetic head is supported for movement in directions which effect adjustment of the azimuth position thereof, and an arrangement responsive to signals from the two coils automatically effects positional adjustment of the magnetic head so as to effect correct azimuth positioning thereof relative to a recorded audio signal on a single track of a recording tape which is being reproduced by the core of the magnetic head.

REFERENCES:
patent: 3384881 (1968-05-01), Frost et al.
patent: 3624313 (1971-11-01), Dekoster
patent: 3679839 (1972-07-01), Suzuki et al.
patent: 3763329 (1973-10-01), Linke
patent: 3842494 (1974-10-01), Chiba et al.
patent: 3946440 (1976-03-01), Saito
patent: 4055849 (1977-10-01), Hickok
patent: 4072994 (1978-02-01), Takashima
patent: 4086639 (1978-04-01), Toshimitsu
patent: 4097910 (1978-06-01), Lafevers et al.
patent: 4101937 (1978-07-01), Jenkins
patent: 4115827 (1978-09-01), Gooch
patent: 4245268 (1981-01-01), Toshimitsu
patent: 4258398 (1981-03-01), Bixby et al.
patent: 4317144 (1982-02-01), De Niet et al.
patent: 4460934 (1984-07-01), Yamada
Elektroakustik mit HiFi, Funkschan Mag. (Germany), No. 25, Dec. 5, 1980, pp. 91-92, "Automatische Tonkopf-Nachfuhrung", by Dolberg.

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