Quadruplex recordings with ferrite heads resembling quadruplex r

Details Quadruplex recordings with ferrite heads resembling quadruplex r Quadruplex recordings with ferrite heads resembling quadruplex r

1981-03-06

1983-08-09

Canney, Vincent R.

Dynamic magnetic information storage or retrieval

General recording or reproducing

Specifics of equalizing

360 25, G11B 1545, G11B 1502

Patent

active

043982263

ABSTRACT:
Prior art quadruplex head assemblies (equipped with metal heads) are detachable for purposes of refurbishment with ferrite heads. The concept of the invention is to mount corrective compensation circuits to each such refurbished quadruplex head assembly so that recordings by means of ferrite heads resemble recordings by metal heads. As a result, recordings produced by ferrite and metal heads are interchangeably playable on the same recorder without adjustment thereto. The compensation circuits are such that they self-disable during signal playback.

REFERENCES:
patent: 3265818 (1966-08-01), Goossen et al.
patent: 3381083 (1968-04-01), Jensen et al.
patent: 4017899 (1977-04-01), Bagby
patent: 4038692 (1977-07-01), Umeda et al.

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