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Control apparatus and control method

  • US 20010028297A1
  • Filed: 02/21/2001
  • Published: 10/11/2001
  • Est. Priority Date: 02/21/2000
  • Status: Abandoned Application
First Claim
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1. A control apparatus comprising:

  • a portable machine; and

    a main unit machine, which is disposed on an object containing a controlled object, radio-communicating with said portable machine and then checking a validity that said portable machine is a predetermined portable machine before executing control processing for accomplishing a predetermined operation of the controlled object, said main unit machine including;

    a power sending section for sending a predetermined electric power at a first frequency by a power transmission in a non-contact manner using an electromagnetic wave, a first communication section for radio-communicating signals at a second frequency different from the first frequency of the power transmission; and

    a first storage section for storing a first authentication code, said portable machine including;

    a power receiving section for receiving the predetermined electric power by the power transmission, a second communication section for radio-communicating the signals at the second frequency; and

    a second storage section for storing a second authentication code, wherein said portable machine is started from a sleep mode on the basis of a reception of the predetermined electric power by the power receiving section, said main unit machine transmits a request signal at the second frequency by the first communication section after sending the predetermined electric power, said portable machine receives the request signal transmitted from said main unit machine and transmits an answer signal, which contains the second authentication code previously stored in the second storage section, at the second frequency by the second communication section during the starting, and said main unit machine receives the answer signal in accordance with the transmitted request signal by the first communication section, wherein said main unit machine determines whether or not the second authentication code contained in the answer signal corresponds to the first authentication code previously stored in the first storage section and determines the validity of said portable machine if the determination result is affirmative.

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