Variable conversion rate analog-to-digital converter
US5128676A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 5, 1990 |
| Grant date | Jul 7, 1992 |
| Priority date | — |
| Expiry date | Jun 5, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/52
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A high resolution and high speed analog to digital converter for use with a transducer in measuring parameters such as weight, which may stay the same or which may change in the system, the converter having an integrator which integrates for a fixed period the output voltage from the transducer, and subsequently deintegrates a known reference voltage, the deintegration times varying depending upon the magnitude of the transducer output voltage which has been integrated, a comparator comparing the deintegration times of successive conversions and shortening the integration times for the transducer output so as to obtain more conversions per time period to provide a high speed readout when the transducer output is changing, but lengthening the integration times to provide a high resolution readout when the comparison of deintegration times does not reveal any change in the transducer output.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.