Read and write circuitry

Details Read and write circuitry Read and write circuitry

1976-06-03

1977-10-11

Canney, Vincent P.

Dynamic magnetic information storage or retrieval

General recording or reproducing

Signal switching

360 67, G11B 1512, G11B 502

Patent

active

040539369

ABSTRACT:
The present invention relates to circuitry providing both read and write capability for a two track card reader magnetic head which senses flux changes in either track. The write circuitry provides an interface between logic TTL format input and the current drive used to write with the magnetic head. The circuitry also provides control and level shifting network enabling the same magnetic head to be used for both reading and writing.

REFERENCES:
patent: 3930266 (1975-12-01), Okamoto

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