Data extracting circuit

Details Data extracting circuit Data extracting circuit

1983-09-15

1986-03-18

Zazworsky, John

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307268, 307359, H03K 508, H03K 5153

Patent

active

045771553

ABSTRACT:
A data extracting circuit for converting an analog signal derived from a D.C. component-free modulated digital signal stored on a recording medium, into a D.C. component-free digital signal with a comparator for comparing the analog signal with a reference signal to provide a compared signal. A phase inverter receives the compared signal and provides a first signal component which is in-phase with the compared signal, and a second signal component which is phase-inverted with respect to the compared signal. A clipping circuit limits the amplitude level of the first and second signal components to a predetermined level and provides first and second limited signal components. An integrating circuit separately integrates the first and second limited signal components and provides first and second integrated signals. An error amplifying circuit determines the difference between the first and second integrated signals and provides a signal corresponding to this difference to the comparator as the reference signal. The D.C. component-free digital output signal is derived from the first signal component.

REFERENCES:
patent: 3398373 (1968-08-01), Caswell
IBM Technical Disclosure Bulletin, vol. 20, No. 8 1/1978.

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