Modem unit
US5655009A · kind A · utility
25Cited by
12References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 17, 1993 |
| Grant date | Aug 5, 1997 |
| Priority date | — |
| Expiry date | Mar 17, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A modem unit is adapted to be coupled between a land or radio telephone line and a terminal equipment. The modem unit is provided with a modem circuit for modulating data received from the terminal equipment and for demodulating data transmitted to the terminal equipment. Additionally an isolation circuit for providing a DC isolation between the telephone line and the terminal equipment is included. The modem circuit and the isolation circuit are respectively provided on a single modem integrated circuit card.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.