Ternary magnetic recording and reproducing system with simultane

Details Ternary magnetic recording and reproducing system with simultane Ternary magnetic recording and reproducing system with simultane

1982-01-15

1984-11-13

Canney, Vincent P.

Dynamic magnetic information storage or retrieval

General processing of a digital signal

In specific code or form

360 39, G11B 509

Patent

active

044829272

ABSTRACT:
A saturated flux equivalent to three amplitude level recording is attained by recording two levels by conventional saturation of the medium and the third level by writing a high frequency which erases old data and is read back as a zero level due to limited playback or read frequency response.

REFERENCES:
patent: 2894796 (1959-07-01), Reynolds
patent: 3573766 (1971-04-01), Perkins, Jr.
patent: 4067050 (1978-01-01), Munninghoff
patent: 4190868 (1980-02-01), Moulin

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