Analog to digital conversion circuitry including backup conversion circuitry
US6590517B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Feb 1, 2002 |
| Grant date | Jul 8, 2003 |
| Priority date | — |
| Expiry date | Feb 1, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/208
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An autoranging analog to digital conversion system is provided. The system may include a digitally programmable preamplifier for amplifying a difference between an analog input and an estimate of the analog input. The preamplifier may be coupled to an analog to digital converter for converting the preamplifier output to a digital signal. The system may also include digital domain predictor or estimation logic for determining an optimum gain and analog input estimate for a given analog input. Multiple signal input channels may be coupled to the analog to digital conversion system. The autoranging estimations may be performed on a sample by sample basis or a channel by channel basis. The conversion system may also include the use of a backup conversion path for use when the main conversion path overranges. The backup conversion path may utilize a dedicated backup converter. The backup conversion path may alternatively utilize the estimation converter to generate backup conversions or may utilize the main converter to generate backup conversions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.