Offset nulling for decreasing offset between currents in a differential signaling system
US7825714B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 12, 2008 |
| Grant date | Nov 2, 2010 |
| Priority date | — |
| Expiry date | Jun 12, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K19/00361
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Systems and methods for nulling offsets in differential signaling systems are described. A first circuit may be configured to sense the difference between a first differential current and a second differential current and provide a sense signal to an adjustment circuit. The adjustment circuit may be configured to generate a correction signal based on the sense signal, where the correction signal is combined with the first differential current to reduce the offset between the first differential current and the second differential current. Alternately, the correction signal may be combined with the first and second differential currents to reduce the offset. The process may be repeated until the corrected first differential current and the second differential current are within a desired tolerance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.