Data switch with multiplexers for forming data connections and control unit for checking permissibility of connections
US5487155A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 30, 1994 |
| Grant date | Jan 23, 1996 |
| Priority date | — |
| Expiry date | Sep 30, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L49/555
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A data switch interconnects a number of data processing nodes. The switch includes a number of port units for interfacing with the processing nodes, a number of multiplexing units for performing the switching, and a connection control unit. When a port unit wishes to initiate a connection, it sends a connection command over a command bus to all the multiplexing units and to the connection control unit, specifying a proposed data connection. Each multiplexing unit responds to the connection command by preparing the proposed data connection. At the same time, the connection control unit checks whether the proposed data connection is permissible. If it is permissible, the connection control unit then sends a GO signal to all the multiplexing units instructing them to complete the prepared connection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.