Patent ID: 9419975
Filing Date: 2016-08-16
CPC Classification: H04L,H04Q

Claim Text:
1. A communication apparatus for secure monitoring and control, comprising: first and second inputs, coupled respectively to receive communication signals from first and second stations; first and second outputs, coupled respectively to convey the received communication signals to the first and second stations; a single one-way link, which is physically capable of carrying the communication signals in one direction and incapable of carrying signals in the other, opposite direction; and a pair of switches, which are coupled to the one-way link and are configured to be toggled between at least a first configuration, in which the communication signals are conveyed from the first input via the single one-way link to the second output, and a second configuration, in which the communication signals are conveyed from the second input via the single one-way link to the first output, wherein the pair of switches comprises: