Distortionless modulation head

Details Distortionless modulation head Distortionless modulation head

1975-06-06

1977-02-22

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

Head

Core

360119, G11B 512, G11B 525

Patent

active

040094910

ABSTRACT:
A magnetic head with capability of eliminating or attenuating distortion having a magnetizable core and coil means formed thereon. Some cores have cavities internal thereto, one has no cavity and another has a window therein. All cores are tapered and most have an aperture or bore extending into the cores. In the record mode, coil means used for application of a carrier frequency to the head may have capacitive and inductively reactive components at resonance to each other. In the reproduce mode, either of the coils may be used to connect to external electronics. Advantage is gained by use of the carrier frequency coil having the reactive components since these components are at resonance to the carrier frequency signal previously recorded and hence the reproduced signal is at higher magnitude.

REFERENCES:
patent: 1218324 (1917-03-01), Severy
patent: 2933721 (1960-04-01), Hagopian
patent: 3017617 (1962-01-01), Quade
patent: 3230517 (1966-01-01), Supernowicz
patent: 3453399 (1969-07-01), Reijnders
patent: 3634632 (1972-01-01), Watson
patent: 3651278 (1972-03-01), Chupity
patent: 3681526 (1972-08-01), Camras
patent: 3881192 (1975-04-01), Ballinger

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