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Control system

  • US 20030033067A1
  • Filed: 08/05/2002
  • Published: 02/13/2003
  • Est. Priority Date: 08/10/2001
  • Status: Active Grant
First Claim
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1. A control system, wherein a first control unit and a second control unit perform data communications, the first control unit and the second control unit sharing data with each other:

  • the first control unit, having;

    a first transmitting means to transmit data which need be maintained to the second control unit when a change of a first switch connected to a power source to the off position is detected; and

    a power supply cutoff means to cut off the power supply to the first control unit after the transmission of the data to the second control unit by the first transmitting means is completed; and

    the second control unit, having;

    a first storage controlling means to store the data transmitted from the first control unit in a first storage means; and

    a power switching means to detect a change of the first switch to the off position and switch the power of the second control unit to backup power.

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