Recording medium erasing device

Details Recording medium erasing device Recording medium erasing device

1991-04-04

1993-08-10

Gensler, Paul

Dynamic magnetic information storage or retrieval

General recording or reproducing

Specifics of biasing or erasing

360 7303, G11B 1546

Patent

active

052354733

ABSTRACT:
A device for erasing a signal recorded on a floppy disk during a rotation of the disk. An erasing signal used for erasing the recorded signal is generated by a frequency-modulator or a DPSK-modulator, and can be an audio FM carrier, a luminance signal "Y+S", an R-Y differential color signal, a B-Y differential color signal and a DPSK signal. These signals can be combined for use as an erasing signal.

REFERENCES:
patent: 3723668 (1973-03-01), Ritchey, Jr.
Great Britain Search Report.

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