Data acquisition system using non-linear digitization intervals
US5138552A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 4, 1989 |
| Grant date | Aug 11, 1992 |
| Priority date | — |
| Expiry date | Apr 4, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/58
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A data acquisition system is described for converting a plurality of analog information signals to a corresponding plurality of digital output signals each (a) having a dynamic range of n bits to match the dynamic range of the corresponding analog information signal, and (b) representative of the corresponding analog information signal during each of a plurality of time intervals. The system simultaneously converts each of the analog signals to an intermediate digital signal during each of the time intervals in accordance with a digitization code of m bits (where m is less than n) such that the digitization intervals of the code increase non-linearly so that the ratio of the noise level of the intermediate digital signal and the digitization interval of the code is substantially constant throughout the dynamic range of the analog signals. The intermediate digital signals are transformed to the corresponding digital output signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.