Fuzzy analog processor with temperature compensation
US5918221A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 26, 1996 |
| Grant date | Jun 29, 1999 |
| Priority date | — |
| Expiry date | Apr 26, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06N7/043
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.