Digital baseline wander correction circuit
US6415003B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 11, 1998 |
| Grant date | Jul 2, 2002 |
| Priority date | — |
| Expiry date | Sep 11, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2025/03503
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In a data communications system, a digitally implemented correction for baseline wander and the receipt of killer packets resulting from coupling transformers in the transmission channel is presented. The baseline wander correction is accomplished in a feedback loop that does not depend on models of the coupling transformers between the transmitter and the transport media and the receiver and the transport media. Additionally, a digital response to killer packets is presented that does not require the use of higher resolution analog-to-digital converters and does not require the use of a lower resolution in the analog-to-digital converter of the receiver. Instead, the reference voltage of the analog-to-digital converter is adjusted for short cables, where killer packets are a problem.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.