US5126600A
Expired / Lapsed
US
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Truth value generating basic circuit suitable for analog inputs
Assignee: APT Instruments Corp
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Filing: 1989-12-04
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Granted: 1992-06-30
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Expires: 2009-12-04
Abstract
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 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.
Inventors
- 👤 Hongmin Zhang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:12
CPC Classifications
G; G06; G06N; G06N5/00; G06N5/04; G06N5/048; G06N7/00; G06N7/02; G06N7/04; G06N7/043; Y; Y10; Y10S; Y10S706/00; Y10S706/90
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
85 words
A truth value generating basic circuit which receives an applied input, comprising: one or a plurality of basic function generator circuits each of which includes an operational amplifier and generates an output signal representing a basic function according to the applied input; means for generating signals corresponding to grades 0 and 1; and an operation circuit for performing a prescribed operation upon receiving said output signal representing a basic function of each basic function generator circuit and said signals corresponding to grades 0 and 1.
Claim 2
Dependent Claim
85 words
A truth value generating basic circuit which receives an applied input, comprising: one or a plurality of basic function generator circuits each of which includes an operational amplifier and generates an output signal representing a basic function according to the applied input; means for generating signals corresponding to grades 0 and 1; and an operation circuit for performing a prescribed operation upon receiving said output signal representing a basic function of each basic function generator circuit and said signals corresponding to grades 0 and 1.
Claim 3
Dependent Claim
40 words
The circuit according to claim 1, wherein each basic function generator circuit includes a feedback resistor for said operational amplifier and a reference voltage applied to said operational amplifier, and both said feedback resistor and said reference voltage are variable.
Claim 4
Dependent Claim
63 words
The circuit according to claim 1, wherein each basic function generator circuit receives an input digital control signal and further comprises: a plurality of parallel connected resistors of different values provided as feedback resistors of said operational amplifier; and a multiplexer for selectively connecting to said operational amplifier any one of said plurality of resistors in dependence upon said input digital control signal.
Claim 5
Dependent Claim
45 words
The circuit according to claim 1, wherein each basic function generator circuit receives an input digital signal and further comprises a D/A converter circuit for generating a reference voltage, which is to be applied to said operational amplifier, in dependency upon said input digital signal.
Claim 6
Dependent Claim
32 words
The circuit according to claim 1, wherein said operation circuit comprises a combination of a MIN circuit and a MAX circuit wherein said MIN circuit provides an input to said MAX circuit.
Claim 7
Dependent Claim
75 words
A truth value generating basic circuit which receives an analog input, comprising: an A/D converter for converting the analog input into digital access data corresponding to an address; a digital memory for receiving said address, said digital memory storing beforehand data representing a membership function and for outputting stored data at the address as a truth value; and a D/A converter circuit for converting the output signal of said digital memory into an analog signal.
Claim 8
Dependent Claim
75 words
A truth value generating basic circuit which receives an analog input, comprising: an A/D converter for converting the analog input into digital access data corresponding to an address; a digital memory for receiving said address, said digital memory storing beforehand data representing a membership function and for outputting stored data at the address as a truth value; and a D/A converter circuit for converting the output signal of said digital memory into an analog signal.
Claim 9
Dependent Claim
57 words
The circuit according to claim 6, wherein plural types of membership functions are set beforehand in said digital memory, with lower order addresses being made to correspond to respective variables, and a truth value of a type of membership function designated by a higher order address being outputted in dependence upon an inputted lower order address signal.
Claim 10
Dependent Claim
108 words
A truth value generating basic circuit which receives an analog input, comprising: an A/D converter for converting the analog input into digital access data corresponding to an address; a digital memory for receiving said address, said digital memory storing beforehand codes for designating grades of a membership function and, for outputting a code stored at said address; a grade signal generator circuit for outputting analog signals representing grades of a plurality of levels; and a multiplexer, to which all output analog signals from said grade signal generating circuit are inputted, for selectively outputting any input analog signal in dependence upon the code read out of said digital memory.
Claim 11
Dependent Claim
108 words
A truth value generating basic circuit which receives an analog input, comprising: an A/D converter for converting the analog input into digital access data corresponding to an address; a digital memory for receiving said address, said digital memory storing beforehand codes for designating grades of a membership function and, for outputting a code stored at said address; a grade signal generator circuit for outputting analog signals representing grades of a plurality of levels; and a multiplexer, to which all output analog signals from said grade signal generating circuit are inputted, for selectively outputting any input analog signal in dependence upon the code read out of said digital memory.
Claim 12
Dependent Claim
61 words
The circuit according to claim 8, codes relating to membership functions of a plurality of types are set beforehand in said digital memory, with lower order addresses being made to correspond to respective variables, and a code relating to a type of membership function designated by a higher order address being outputted in dependence upon an inputted lower order address signal.
Claim 13
Dependent Claim
35 words
The circuit according to claim 8, wherein said multiplexer is constituted by a combination of a plurality of MIN circuits and a MAX circuit wherein said plurality MIN circuits provides input to said MAX circuit.
Claim 14
Dependent Claim
135 words
A truth value generating circuit which receives an applied input signal, comprising: a terminal for receiving an applied input; a plurality of truth value generating basic circuits connected to said terminal for receiving in common said applied input, each of said truth value generating basic circuits comprising: one or a plurality of basic function generator circuits each of which includes an operational amplifier and generates an output signal representing a basic function according to the applied input; means for generating signals corresponding to grades 0 and 1; and an operation circuit for performing a prescribed operation upon receiving the output signal representing a basic function of each basic function generator circuit and signals corresponding to grades 0 and 1; and each of said truth value generating basic circuits having a different membership function set therein.
Claim 15
Dependent Claim
135 words
A truth value generating circuit which receives an applied input signal, comprising: a terminal for receiving an applied input; a plurality of truth value generating basic circuits connected to said terminal for receiving in common said applied input, each of said truth value generating basic circuits comprising: one or a plurality of basic function generator circuits each of which includes an operational amplifier and generates an output signal representing a basic function according to the applied input; means for generating signals corresponding to grades 0 and 1; and an operation circuit for performing a prescribed operation upon receiving the output signal representing a basic function of each basic function generator circuit and signals corresponding to grades 0 and 1; and each of said truth value generating basic circuits having a different membership function set therein.
Claim 16
Dependent Claim
109 words
A truth value generating circuit which receives an analog input, comprising: a terminal for receiving said analog input; an A/D converter for converting said analog input applied to said terminal into digital access data corresponding to an address; a plurality of truth value generating basic circuits, each comprising: a digital memory for receiving said address, said digital memory storing beforehand data representing a membership function and outputting stored data at said address as a truth value; a D/A converter circuit for converting the output signal of said digital memory into an analog signal; and each of said truth value generating basic circuits having a different membership function set therein.
Claim 17
Dependent Claim
109 words
A truth value generating circuit which receives an analog input, comprising: a terminal for receiving said analog input; an A/D converter for converting said analog input applied to said terminal into digital access data corresponding to an address; a plurality of truth value generating basic circuits, each comprising: a digital memory for receiving said address, said digital memory storing beforehand data representing a membership function and outputting stored data at said address as a truth value; a D/A converter circuit for converting the output signal of said digital memory into an analog signal; and each of said truth value generating basic circuits having a different membership function set therein.
Claim 18
Dependent Claim
145 words
A truth value generating circuit which receives an applied analog input, comprising: a terminal for receiving said analog input; an A/D converter for converting said applied analog input applied to said terminal into digital access data corresponding to an address; a grade signal generator circuit for outputting analog signals representing grades of a plurality of levels; and a plurality of truth value generating basic circuits, each comprising: a digital memory for receiving said address, said digital memory storing beforehand codes for designating grades of a membership function and outputting a code stored at said address; a multiplexer, to which all output analog signals from said grade signal generating circuit are inputted, for selectively outputting any input analog signal in dependence upon the code read out of said digital memory; and each of said truth value generating basic circuits having a different membership function set therein.
Claim 19
Dependent Claim
145 words
A truth value generating circuit which receives an applied analog input, comprising: a terminal for receiving said analog input; an A/D converter for converting said applied analog input applied to said terminal into digital access data corresponding to an address; a grade signal generator circuit for outputting analog signals representing grades of a plurality of levels; and a plurality of truth value generating basic circuits, each comprising: a digital memory for receiving said address, said digital memory storing beforehand codes for designating grades of a membership function and outputting a code stored at said address; a multiplexer, to which all output analog signals from said grade signal generating circuit are inputted, for selectively outputting any input analog signal in dependence upon the code read out of said digital memory; and each of said truth value generating basic circuits having a different membership function set therein.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-06-30 | 1995-12-30 | 1996-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-06-30 | 1999-12-30 | 2000-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-06-30 | 2003-12-30 | 2004-06-30 | $7700.00 | Window Closed / Lapsed |