Magnetic recording or reproduction apparatus with erasing capabi

Details Magnetic recording or reproduction apparatus with erasing capabi Magnetic recording or reproduction apparatus with erasing capabi

1986-08-28

1989-04-11

Psitos, Aristotelis M.

Dynamic magnetic information storage or retrieval

General recording or reproducing

Specifics of biasing or erasing

360 331, 358310, 358335, G11B 503

Patent

active

048211230

ABSTRACT:
A magnetic recording or reproduction apparatus having a magnetic head, a reference clock signal source, a recording or reproducing signal processing system connected through a boosting transformer to the magnetic head, means for supplying an erasing signal to the magnetic head through the transformer, and a motor for rotating a recording or record bearing medium relative to the magnetic head, wherein the erasing signal is obtained by dividing the frequency of the periodic signal produced from the reference clock signal source under the condition that the frequency of the erasing signal falls within the pass band of the boosting transformer and is so low as not to give any influence to the recorded signals. Another feature is that the frequency of the erasing signal is also related to the frequency of rotation of the record bearing medium relative to the magnetic head so that the erasing magnetic field has no stationary nodes on the recording track.

REFERENCES:
patent: 3829896 (1974-08-01), Brock
patent: 4301466 (1981-11-01), Lemoine
patent: 4717975 (1988-01-01), Ogura et al.
English Translations of JP 59-51681 and 62-26911 provided by applicant.

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