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Electronic key system

  • US 20040021550A1
  • Filed: 06/16/2003
  • Published: 02/05/2004
  • Est. Priority Date: 06/21/2002
  • Status: Active Grant
First Claim
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1. An electronic key system for use in a vehicle comprising:

  • a terminal installed in the vehicle to process predetermined information;

    a plurality of electronic keys, each storing an identification code and transmitting the identification code to the vehicle, wherein at least one of the identification codes is a restriction code for restricting the usage of the terminal;

    a comparing means arranged in the vehicle and storing a plurality of verification codes associated with the identification codes, wherein the comparing means retrieves the identification code of one of the electronic keys and compares the retrieved identification code with an associated one of the verification codes; and

    a control means for restricting activation of the terminal when the retrieved identification code is the restriction code.

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