Width modulated magnetic recording

Details Width modulated magnetic recording Width modulated magnetic recording

1975-12-17

1976-12-28

Canney, Vincent P.

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Pulse crowding correction

360 44, G11B 509

Patent

active

040005127

ABSTRACT:
In a system for recording bits in elements along a moving magnetic medium wherein a first valued bit is represented by a pulse of a first width, length or duration, and a second valued bit is represented by a pulse of a second width, length or duration, there is included the improvement of changing either the first width or said second width when the bit to be recorded and the bit previously recorded have the same value.

REFERENCES:
patent: 3067422 (1962-12-01), Hunt
patent: 3281806 (1966-10-01), Lawrance et al.
patent: 3488662 (1970-01-01), Vallee
patent: 3879342 (1975-04-01), Patel
patent: 3930265 (1975-12-01), Kimura

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