Multiplexing scheme for modem control signals
US5202884A · kind A · utility
47Cited by
1References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 28, 1991 |
| Grant date | Apr 13, 1993 |
| Priority date | — |
| Expiry date | Jun 28, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/385
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In an apparatus to couple a plurality of line interfaces with corresponding modems ports, status and control signals are time-division-multiplexed (TDM) into a data stream before being exchanged between the devices. This substantially reduces the number of communication wires required and allows for several modems to be coupled in close proximity to a line interface card. Packet recognition circuitry coupled to the modem ports insures that signals in the TDM data stream are transmitted to the appropriate modem ports.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.