Transmission apparatus for differential communication
US8098084B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 12, 2010 |
| Grant date | Jan 17, 2012 |
| Priority date | — |
| Expiry date | Oct 12, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/028
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A transmission apparatus for differential communication includes a driver bridge circuit and a pair of noise protection circuits. The driver bridge circuit includes four output devices that are independently connected between each of a pair of transmission lines and a power line or a ground line. Each noise protection circuit is provided to a corresponding transmission lines. Each noise protection circuit includes a ground potential detector and an impedance controller. The ground potential detector detects a potential of the corresponding transmission line with respect to the ground line. The impedance controller causes an impedance of the corresponding transmission line with respect to the ground line to become equal to an impedance of the other transmission line with respect to the ground line, when the detected potential becomes outside a predetermined potential range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.