Digital magnetic recording and reproducing circuit for suppressi

Details Digital magnetic recording and reproducing circuit for suppressi Digital magnetic recording and reproducing circuit for suppressi

1991-06-13

1993-04-20

Gensler, Paul

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Head amplifier circuit

360 63, 360 67, G11B 509

Patent

active

052047881

ABSTRACT:
A magnetic recording and reproducing circuit comprises a recording and reproducing head including a recording coil; an erasing head disposed upstream of the recording and reproducing head and including an erasing coil; a flip-flop which receives pulse-shaped record data and outputs an output signal which reverses the state in accordance with the pulses of the recording data; a delay circuit which receives the output of the flip-flop and delays such output by a predetermined period of time; a record driver which receives the output of the delay circuit for causing a recording current to flow through the recording coil of the recording and reproducing head; and an erasing circuit for causing an erasing current to flow through the erasing coil of the erasing head at the time of recording.

REFERENCES:
patent: 4523238 (1985-06-01), Keel et al.
patent: 4651235 (1987-03-01), Morita et al.
patent: 4803571 (1989-02-01), Fujioka et al.

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