Rotary magnetic head device in magnetic recording and reproducin

Details Rotary magnetic head device in magnetic recording and reproducin Rotary magnetic head device in magnetic recording and reproducin

1990-10-04

1993-06-29

Psitos, Aristotelis

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 7716, 360109, G11B 2102, G11B 2124

Patent

active

052239926

ABSTRACT:
A rotary magnetic head device in a magnetic recording and reproducing apparatus such as a VTR apparatus and a DAT apparatus which adopts a helical scanning system. In order to prevent the demagnetization of a magnetic tape and reduce a jitter component of a reproducing signal, a head unit moves the magnetic head in the diametrical direction of a rotary drum. The head unit has a bobbin inserted into the center holes of a plurality of spring leaves, and the bobbin is moved in the diametrical direction of the rotary drum by the electromagnetic force produced on the coil wound around the bobbin. A head arm attached to the spring leaf is thereby moved in the same direction, thereby varying the amount of projection of the magnetic head. The amount of projection of the magnetic head is controlled in correspondence with the level of the envelope of a reproducing signal so as to be set at the minimum value in the range in which the output level of the envelope signal is saturated.

REFERENCES:
patent: 3499998 (1970-03-01), Tanigawa et al.
patent: 4104684 (1978-08-01), Wakami et al.
patent: 4127881 (1978-11-01), Wakami et al.
patent: 4151569 (1979-04-01), Hathaway
patent: 4212043 (1980-07-01), Baker
patent: 4568986 (1986-02-01), Furuhata et al.
patent: 4581658 (1986-04-01), Azuma et al.
patent: 4882635 (1989-11-01), Sanai
patent: 4985794 (1991-01-01), Rato et al.
patent: 5101309 (1992-03-01), Mitsuhashi
patent: 5103361 (1992-04-01), Nagatsuka et al.

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