Transmitter equalization method and apparatus
US6995627B2 · kind B2 · utility
24Cited by
5References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 20, 2002 |
| Grant date | Feb 7, 2006 |
| Priority date | — |
| Expiry date | Mar 15, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2027/0016
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A current mode output driver includes a pre-driver for pre-equalization. The current mode output driver drives a transmission line with an alternating current (AC) signal and a direct current (DC) signal. Characteristics of the transmission line are measured by comparing a received amplitude of the AC signal and a received amplitude of the DC signal. A ratio of the AC received amplitude to the DC received amplitude is compared to ratios derived from possible equalization settings to determine an equalization setting appropriate to equalize the channel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.