Magnetic bubble read/write head for a magnetic recorder/playback

Details Magnetic bubble read/write head for a magnetic recorder/playback Magnetic bubble read/write head for a magnetic recorder/playback

1974-04-29

1976-01-27

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

General recording or reproducing

360 77, 360110, G11B 502, G11B 2102, G11B 512

Patent

active

039355942

ABSTRACT:
A device for recording and playing back information in a spiral-like track or a track consisting of concentric circles present on a disk-shaped recording medium, in which the storage and playback element consists of a sheet of magnetizable material which contains a single-wall magnetic domain. The polarity of a radially directed magnetic field can be inverted according to a frequency modulated with a signal to be recorded so as to record information together with the stray field of the domain. A detector is present to detect position variations of the domain upon playing back and means are present to correct the position of the domain in the sheet by way of fine control upon playing back.

REFERENCES:
patent: 3793639 (1974-02-01), Enz et al.
patent: 3793640 (1974-02-01), Potgiesser

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