Hybrid for two-wire full-duplex transmission of digital signals
US4178569A · kind A · utility
13Cited by
3References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 20, 1978 |
| Grant date | Dec 11, 1979 |
| Priority date | — |
| Expiry date | Mar 20, 1998 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/22
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The hybrid includes a control circuit which automatically matches the impedance of the balancing network to the input impedance of the two-wire line connected to the hybrid. For control, rectified voltages present on the two-wire side and across the balancing network are averaged over time and the mean time values are compared.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.