Coded data generation or conversion – Analog to or from digital conversion – Analog to digital conversion
Patent
1990-06-20
1993-02-02
Hoff, Marc
Coded data generation or conversion
Analog to or from digital conversion
Analog to digital conversion
341160, H03M 138
Patent
active
051841312
ABSTRACT:
In an A-D converter including a reference voltage generator, a D-A converter for outputting analog reference comparison voltage signals in response to digital signals; a comparator for comparing the voltages with an analog input voltage signal to be converted and outputting a reset signal when the voltage is substantially equal to the voltage, and a successive approximation register for successively outputting the digital signals to the D-A converter and an A-D converted signal in response to the reset signal, the D-A converter comprises in particular, at least one decoder block composed of plural array switches for coding any given function. Therefore, the analog input signal can be converted into the corresponding digital output signal in accordance with the coded function, thus providing an A-D converter suitable for use with a fuzzy controller. Further, the reference voltage generator is so configured as to easily change the coded membership function symmetrically or asymmetrically. A comparator priority decision logic circuit is further incorporated to allow input signals to be converted into output voltages in sequence in accordance with a multivalued membership function.
REFERENCES:
patent: 3678501 (1972-07-01), Prill
patent: 4415882 (1983-11-01), Akazawa et al.
patent: 4498072 (1985-02-01), Moriyama
patent: 5012246 (1991-04-01), Chung et al.
patent: 5016014 (1991-05-01), Bitting
Watanabe et al, "A VLSI Fuzzy Logic Controller . . . ", IEEE Journal of Solid State Circuits, vol. 25, No. 2, Apr. 1990, pp. 376-381.
M. Mizumoto, "Fuzzy Controls Under Various . . . ", International Workshop on Fuzzy System Appln., 1990, pp. 252-253.
Nikkan Kogyo SHINBUN, "A-D, D-A Conversion Technique in Microcomputer Age", pp. 70-79.
Nikkei Electronics 1988, 10, 3 (No. 457), pp. 157-168.
Hoff Marc
Nissan Motor Co,. Ltd.
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