Method and apparatus for correction of A/D converted output data
US6891491B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 2, 2004 |
| Grant date | May 10, 2005 |
| Priority date | — |
| Expiry date | Mar 2, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/502
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A method for correcting A/D converted output data which corrects digital data obtained by A/D conversion of an analog signal, comprising forming an at least first order polynomial curve approximating an input/output characteristic curve of A/D conversion in a range of input of the analog signal, setting an ideal input/output characteristic line of A/D conversion, deriving a conversion equation for converting coordinates of a point on the approximation polynomial curve to a point of the ideal input/output characteristic line for the same analog signal value, and using this conversion equation to convert A/D converted digital data so as to correct non-linearity of the output data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.