Data port expander
US5649111A · kind A · utility
10Cited by
6References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 18, 1995 |
| Grant date | Jul 15, 1997 |
| Priority date | — |
| Expiry date | Dec 18, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L12/42
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A device which attaches multiple workstations, printers, computers or the like to a single lobe of a communications network includes a multistation access unit (MAU) with multiple ports and a voltage generator unit which generates a phantom current to activate a remote switch which allows one or more ports on the MAU to transmit or receive information from the communications network.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.