Recording bias oscillating circuit

Details Recording bias oscillating circuit Recording bias oscillating circuit

1983-02-10

1986-05-20

Canney, Vincent P.

Dynamic magnetic information storage or retrieval

General recording or reproducing

Specifics of biasing or erasing

360 68, G11B 547, G11B 502

Patent

active

045905258

ABSTRACT:
A recording bias oscillating circuit for use in apparatus of the type having at least two independent tape recorder sections. The circuit is provided with at least two recording heads respectively corresponding to the tape recorder sections for recording signals on tapes. The recording heads are supplied with bias signals from independent bias oscillators. The bias oscillators are connected to each other through a coupling device for synchronizing the frequencies of the bias oscillators thereby preventing beat noises caused by a frequency difference between recording bias oscillating signals.

REFERENCES:
patent: 2920146 (1960-01-01), Grift et al.
patent: 4297649 (1981-10-01), Shuelz et al.
Markus, "Electronic Circuits Manual", p. 391, 1971, New York.
Chr. Scolz, Magnetbandspeichertechnik, 2nd Edition, VEB Verlag Technik Berlin, 1969, pp. 174, 175.
Japanese Publication Entitled "NHK Television Technique Text", pp. 105-108, Section 3.4.1 Sync. Circuit, published by Nippon Hoso Kyokai, copyrighted 1971.

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