Circuit arrangement for the recording of data on a magnetic reco

Details Circuit arrangement for the recording of data on a magnetic reco Circuit arrangement for the recording of data on a magnetic reco

1983-09-07

1985-10-15

Canney, Vincent P.

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Head amplifier circuit

G11B 509

Patent

active

045478180

ABSTRACT:
High-frequency magnetic bias signals are superimposed on the data signals and are synchronized with the data signals. For the data signals and for the magnetic bias signals in each instance a separate write amplifier with two logic elements is provided which are alternately switched in dependence upon the binary values of the data signals and the magnetic bias signals, respectively. Mutually corresponding logic elements in the write amplifiers are interconnected at the output side via resistances. The magnetic head is connected between the connection points of the resistances. The resistances determine the respective current through the magnetic head. As logic elements preferably integrated NAND circuits without output-side collector resistances are provided.

REFERENCES:
patent: 3952329 (1976-04-01), Dent, III et al.
patent: 4202017 (1980-05-01), Getton et al.
patent: 4470081 (1984-09-01), Chi

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