Bi-polar electronic signal converters with single polarity accurate reference source
US4445111A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 15, 1980 |
| Grant date | Apr 24, 1984 |
| Priority date | — |
| Expiry date | Sep 15, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/02
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Bi-polar electronic signal converters, such as analog-to-digital or digital-to-analog converters, with a single polarity accurate reference source are disclosed. In one polarity direction, the accurate reference source is used in a conventional manner to transform the signal to be converted from one form (e.g., analog) to the other form (e.g., digital). In the other polarity direction, an inaccurate reference source is used in a similar conventional manner to convert the signal from one form to the other form. Periodically, the accurate and the inaccurate reference sources are compared to determine a correction multiplier. The correction multiplier is used during conversions using the inaccurate reference source to compensate for the inaccuracy of the inaccurate reference source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.