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Device for exchanging data with a motor vehicle

  • US 6,584,381 B2
  • Filed: 03/29/2001
  • Issued: 06/24/2003
  • Est. Priority Date: 03/29/2000
  • Status: Active Grant
First Claim
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1. A device for exchanging data with a motor vehicle, comprising:

  • a control unit situated in the vehicle;

    at least one vehicle information database;

    at least one user information database;

    a vehicle management system, the vehicle management system selecting an available vehicle based on the at least one vehicle information database and the at least one user information database; and

    a portable transponder including a memory unit for storing at least one piece of authorization information associated with the available vehicle, the transponder exchanging data with the vehicle management system, the vehicle management system influencing the authorization information, the transponder transmitting the authorization information to the control unit to obtain authorization for normal operation of the available vehicle;

    wherein the control unit transmits a characteristic usage quantity of the vehicle to the transponder, and the transponder relays usage information determined in the vehicle to the vehicle management system.

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