Networking computers via shared use of voice telephone lines
US5841841A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 17, 1997 |
| Grant date | Nov 24, 1998 |
| Priority date | — |
| Expiry date | Nov 17, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M7/006
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Simultaneous communication of data and voice on a common telephone line are provided between a customer location and a central switching location. At the customer location there may be provided a series of computers each having the LAN interface connected to a common data bus at the customer location with that bus connected to the telephone line. At the central switching station the telephone lines are connected to a central hub device which does not provide a data bus but connects to the Internet. High and low pass filters allow the data from the LAN interface from the voice from a telephone set to be communicated simultaneously on the common line. Equalization and pre distortion are provided to enhance transmission line distances.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.