Patent · US Expired

ATM exchange with copying capability

US5202885A · kind A · utility

37Cited by

8References

4Claims

0Family size

Assignee

Alcatel N.V. · NL

Inventors

Karl Schrodi · Bad Buchau, DE
Gert Eilenberger · Stuttgart, DE
Bodo Pfeiffer · Bad Buchau, DE
Bozo Cesar · Kornwestheim, DE

Key dates

Filing date	Mar 12, 1991
Grant date	Apr 13, 1993
Priority date	—
Expiry date	Mar 12, 2011

Classification

Technology area (CPC H)Electricity
CPC primaryH04L12/18
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

In practice, switching is a continuously changing mixture of point-to-point connections, point-to-multipoint connections with low fanout, and point-to-multipoint connections with high fanout. The switching elements of a switch optimized for point-to-point connections are additionally enabled to copy a few input signals for an arbitrary number of outputs, so that a very large number of copies is attainable for few input signals. This switch is supplemented by a copy switch which serves exclusively to make limited numbers of copies for a large number of input signals, which are then switched in the (group) switch as point-to-point connections. Point-to-point connections are operated as connectionless connections, but outside the switch act as virtual connections. Point-to-multipoint connections are operated as virtual connections (connection-oriented) by means of connection tables.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.