Magnetic recording systems

Details Magnetic recording systems Magnetic recording systems

1980-08-25

1983-06-21

Canney, Vincent P.

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Pulse crowding correction

360 29, 360 46, G11B 509, G11B 502

Patent

active

043896820

ABSTRACT:
A digital magnetic recording system in which information is recorded as transitions between regions magnetized in opposite senses. In the read channel the output of the read head is applied to modulate a carrier, passed through a surface acoustic wave transversal filter and then demodulated, and the resulting transformed waveform is sampled. The surface acoustic wave transversal filter is designed to control the manner in which the transformed versions of elementary read pulses interfere at the sampling instants in such a way as to facilitate recovery of the recorded bits.

REFERENCES:
patent: 3775759 (1973-11-01), Armitage, Jr. et al.
patent: 3899666 (1975-08-01), Bolger
patent: 4081756 (1978-03-01), Price et al.

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