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System and Method for Providing the Status of Safety Critical Systems to Untrusted Devices

  • US 20150113125A1
  • Filed: 10/23/2013
  • Published: 04/23/2015
  • Est. Priority Date: 10/23/2013
  • Status: Abandoned Application
First Claim
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1. A system comprising:

  • a first network, the first network comprising a first communications bus over which a plurality of trusted devices and systems are adapted to communicate, the plurality of devices and systems comprising at least one safety critical system;

    a second network, the second network comprising a second communications bus over which at least one untrusted device is adapted to communicate;

    a monitor device which is connected to and can communicate on both the first communications bus and the second communications bus, the monitor device having a data structure that represents various states of one or more the plurality of trusted devices or systems on the first network, the monitor device updating the data structure when an update about the state of one of the plurality of trusted devices or systems is received via the first network;

    a processor which, when the monitor device receives, from the at least one untrusted device, a request for the state of one of the trusted devices or systems, replies to the at least one untrusted device with the state of the one of the trusted devices or systems from the internal data structure that represents the states of each trusted device on the first network.

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