Port transceiver for providing communication between a signal transmitting and receiving machine and a space switch
US5396512A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 16, 1993 |
| Grant date | Mar 7, 1995 |
| Priority date | — |
| Expiry date | Apr 16, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/38
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A switcher has a plurality of input ports and a plurality of output ports. A plurality of port transceivers each have first and second I/O ports, an input port connected to an output port of the switcher and an output port connected to an input port of the switcher. Each port transceiver provides a first input signal path from the first I/O port to the output port of the transceiver, a second input signal path from the second I/O port to the output port of the transceiver, a first output signal path from the input port of the transceiver to the first I/O port, and a second output signal path from the input port of the transceiver to the second I/O port. Each port transceiver has a first state in which it propagates a signal received at its input port to its second I/O port and a signal received at its first I/O port to its output port and the first output signal path presents a high impedance to the first I/O port, and a second state in which it propagates a signal received at its input port to its first I/O port and a signal received at its second I/O port to its output port and the second output signal path presents a high impedance to the second I/O port.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.