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Electronic control system and method having monitor program

  • US 6,230,094 B1
  • Filed: 03/04/1999
  • Issued: 05/08/2001
  • Est. Priority Date: 04/13/1998
  • Status: Expired due to Fees
First Claim
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1. An electronic control system comprising:

  • a first computer programmed to control a first object;

    a second computer having a control program and programmed to control a second object by the control program, the second computer having a monitor program for checking a malfunction of the first computer; and

    a program watching unit for detecting a malfunction of only the monitor program of the second computer, wherein the program watching unit is connected to the first computer to apply a malfunction signal to the first computer upon detection of malfunction of the monitor program;

    wherein the first computer is programmed to transmit to the second computer the malfunction signal applied from the program watching unit; and

    wherein the second computer is programmed to change to a second object control mode in response to the malfunction signal transmitted from the first computer.

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