Data processing: artificial intelligence – Fuzzy logic hardware – Defuzzification processing
Patent
1996-04-26
1999-06-29
Hafiz, Tariq R.
Data processing: artificial intelligence
Fuzzy logic hardware
Defuzzification processing
706 1, 706 8, G06F 1518
Patent
active
059182210
ABSTRACT:
The analog processor can carry out processings independently of the operating temperature and process parameters, in a reliable manner and at high performance levels using fairly simple circuitry. To achieve this independence, the processor is basically implemented and integrated with MOS transistors, has both voltage inputs and outputs, and includes a biasing section which supplies voltage bias signals, of which at least one is substantially the sum of a voltage proportional to the threshold voltage of the MOS transistors and a reference voltage. This reference voltage can be extracted from a reference potential which is stable to temperature and process parameters, for example that produced by a bandgap type of generator. A major feature of the processor according to the invention is the linearity of its input-output characteristic relative to that reference voltage. It follows that it may be advantageous to extract that reference voltage by division from a signal indicating the width of the input signal variation range, thereby to achieve compensation for or independence of variations of this range.
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Bruno Dario
Franchi Eleonora
Manaresi Nicolo
Poluzzi Rinaldo
Carlson David V.
Hafiz Tariq R.
Ross Kevin S.
STMicroelectronics S.r.l.
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