Variable thresholding circuit for converting an analog signal to

Details Variable thresholding circuit for converting an analog signal to Variable thresholding circuit for converting an analog signal to

1976-01-16

1978-08-22

Sloyan, Thomas J.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307358, 3401463AG, H03K 518

Patent

active

041092112

ABSTRACT:
A variable thresholding circuit for converting an analog signal to a binary signal comprises a comparator to which signals to be converted are applied and a threshold circuit coupled with the comparator in order to provide the threshold level of the comparator, so that the signals applied to the comparator are converted into binary signals in accordance with the threshold level. The threshold level corresponding to the output of the threshold circuit is compensated in accordance with the variations of the levels of the signals applied to the comparator. The threshold level of the comparator is changed to a compensated level when the result calculated from the threshold level and the signals applied to the comparator is smaller than a predetermined value, whereas the threshold level of the comparator is not changed to the compensated one when the result calculated from the threshold level and the signals applied to the comparator is larger than that and the compensation is repeated until the calculated result becomes smaller than the predetermined value.

REFERENCES:
patent: 3869698 (1975-03-01), Trost et al.
patent: 3909594 (1975-09-01), Allais et al.
Penny, Dynamic Threshold Setting Circuit, IBM Technical Disclosure Bulletin, vol. 18, No. 6, 11/1975, pp. 1962-1965.
Wilson, Thresholding of Video Signals, IBM Technical Disclosure Bulletin, vol. 16, No. 12, 5/1974, pp. 4021, 4022.

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