Truth value generating basic circuit suitable for analog inputs

Details Truth value generating basic circuit suitable for analog inputs Truth value generating basic circuit suitable for analog inputs

1989-12-04

1992-06-30

Westin, Edward P.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307201, 307464, 364807, 3642746, H03K 1900, H03K 1908

Patent

active

051266008

ABSTRACT:
A truth value generating basic circuit according to the invention is characterized by having one or a plurality of basic function generator circuits (23, 24) which receive an analog applied input and include an operational amplifier (A.sub.1), and an operation circuit (21, 22). The operation circuit (21, 22) performs a prescribed operation upon receiving, as inputs thereto, an output signal representing a basic function of each basic function generator circuit, and signals corresponding to grades 0 and 1. Alternative embodiments of the truth value generating circuit include and A/D converter (39) for converting an analog input into digital access data which are applied to digital memory (31-34). A truth value generating circuit (TG, TG1-TG3) according to the invention is constituted by providing a plurality of the truth value generating basic circuits, with a different membership function being set in each truth value generating basic circuit.

REFERENCES:
patent: 3142037 (1964-07-01), Gazale
patent: 3646329 (1972-02-01), Yoshino et al.
patent: 4140920 (1979-02-01), Dao et al.
patent: 4837725 (1989-06-01), Yamakawa
patent: 4875184 (1989-10-01), Yamakawa
IEEE JSSC, "Threshold I.sup.2 L and Its Applications to Binary Symmetric Functions and Multivalued Logic", by Dao, vol SC-12 No. 5 Oct. 1977.
IEEE Transactions Computers, "Networks Composed of Ternary Majority Elements", Ovievich et al., Oct. 1965.
IEEE Transactions On Computers, "Multi-Valued Logic Charge Coupled Devices", Tervoert et al., vol. C-30, No. 9, Sep. 1981.

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