Rotary head type magnetic tape recording reproducing apparatus

Details Rotary head type magnetic tape recording reproducing apparatus Rotary head type magnetic tape recording reproducing apparatus

1980-01-29

1982-04-27

Wolff, John H.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 70, 360107, 360109, G11B 2110, G11B 554

Patent

active

043273840

ABSTRACT:
A rotary head type magnetic tape recording/reproducing apparatus, by which a tracking condition of the reproducing heads and a recorded track can be automatically adjusted. This apparatus includes an oscillator for imparting small vibrations to the reproducing heads, a synchronous detector, an integration adder circuit including an adder and a delay circuit rotary heads mounted on a positionable element, and from the small vibrations. A tracking error signal which is derived by wobbling circuit is applied to the integration adder circuit, and the positionable element is controlled by the output signal of the integration adder means so as to construct a servo loop. Accordingly, proper tracking can be attained even for large tracking error.

REFERENCES:
patent: 4106065 (1978-08-01), Ravizza
patent: 4143405 (1979-03-01), Kubota
patent: 4148083 (1979-04-01), Watanabe
patent: 4163994 (1979-08-01), Sakamoto et al.
patent: 4172265 (1979-10-01), Sakamoto et al.
patent: 4229773 (1980-10-01), Sakamoto

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