Magnetic recording detection

Details Magnetic recording detection Magnetic recording detection

1978-09-18

1980-03-18

Canney, Vincent P.

Dynamic magnetic information storage or retrieval

General processing of a digital signal

In specific code or form

G11B 509

Patent

active

041942230

ABSTRACT:
In a magnetic recording system utilizing a non-return-to-zero format the reproduced recording is fed to positive and negative threshold detectors having no need for electrical hysteresis as well as, via differentiator means, to a zero-crossing detector. The signal from the positive threshold detector and one polarity of the signal from the zero-crossing detector are used to trigger a latch means to a first state to emit a signal having a first level, and the signal from the negative threshold detector and the other polarity of the signal from the zero-crossing detector are used to trigger the latch means to a second state whereby the signal emitted by the latch means is switched to a second level.

REFERENCES:
patent: 3413625 (1968-11-01), Mitterer et al.
patent: 3478255 (1969-11-01), Parker et al.
patent: 3715738 (1973-02-01), Kleist et al.
patent: 3719934 (1973-03-01), Behr et al.
patent: 3735372 (1973-05-01), Coccagna
patent: 3852809 (1974-12-01), Coker, Jr.
patent: 3947876 (1976-03-01), Gray
patent: 4087840 (1978-05-01), Zdrojkowski et al.

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