Error correction for stepwise signal modification circuits
US10715123B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 21, 2019 |
| Grant date | Jul 14, 2020 |
| Priority date | — |
| Expiry date | Jun 21, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2005/00286
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Circuits and methods for correction of errors in multi-stage stepwise signal modification circuits. Embodiments of the invention also provide flexibility to correct accuracy errors over a range of conditions, such as differences in signal frequency and/or temperature. A first embodiment includes sorting actual values of a multi-stage stepwise signal modification circuit to generate a monotonic listing of actual values; mapping input codes to a new order of codes corresponding to the sorted actual values; and providing mapping functionality to convert each input code into a mapped output code. A second embodiment includes searching, for each ideal value corresponding to an input code, all actual values of a multi-stage stepwise signal modification circuit for the actual value closest to the ideal value; mapping input codes to a new order of codes corresponding to the closest actual values; and providing mapping functionality to convert each input code into a mapped output code.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.