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Environment monitoring system for standard interface bus computer systems

  • US 5,337,413 A
  • Filed: 02/06/1992
  • Issued: 08/09/1994
  • Est. Priority Date: 02/06/1992
  • Status: Expired due to Fees
First Claim
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1. A system for monitoring the environment of at least one remote device attached to a host processor by means of an interface bus having a limited number of address ports, including:

  • (a) a host processor;

    (b) a first interface bus, coupled to the host processor, and having a limited number of address ports;

    (c) at least one remote device;

    (d) a second interface bus, coupled to at least one remote device;

    (e) bus repeater means, coupled to the first and second interface buses, for communicating information between the first and second interface buses in a first mode of operation, and for blocking such communication in a second mode of operation;

    (f) environment monitor means, for monitoring environment conditions relevant to at least one remote device;

    (g) bus interface means, electrically coupled to the first interface bus and to the environment monitor means, for communicating environment information with the host processor over the first interface bus in the second mode of operation, and for blocking such communication in the first mode of operation;

    (h) control means, electrically coupled to the environment monitor means, the bus repeater means, and the bus interface means, for switching the system between the first mode and the second mode of operation;

    wherein the environment monitor means does not use any of the limited number of address ports of the first interface bus when the system is in the first mode of operation.

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