Logarithmic analog/digital conversion method for an analog input signal, and corresponding device
US8493252B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Feb 22, 2011 |
| Grant date | Jul 23, 2013 |
| Priority date | — |
| Expiry date | Jul 27, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/16
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A logarithmic analog to digital conversion method for an analog input signal includes a logarithmic amplification with progressive compression of the input signal delivering a sequence of several secondary analog signals. The trend of the values of at least some of the secondary signals is a function of the values of the analog input signal including regions corresponding to a linear trend of the secondary signals as a function of that of the input signal expressed in a logarithmic scale. The method also includes a comparison of at least some of the secondary signals of the sequence with a common reference signal whose value lies within each of regions, supplying a thermometric code information item, and a generation of a first digital word from the thermometric code information item.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.