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RFID systems for vehicular applications

  • US 7,916,008 B2
  • Filed: 12/15/2005
  • Issued: 03/29/2011
  • Est. Priority Date: 12/15/2005
  • Status: Expired due to Fees
First Claim
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1. An indication system for a vehicle, said indication system comprising:

  • at least one in-vehicle element including at least one seat system having an associated seat belt tongue and seat belt buckle;

    a first radio-frequency circuit including (i) a transponder operable to transmit a status request signal and (ii) a first radio-frequency identification tag coupled to said at least one in-vehicle element and operable to inductively generate a first status signal associated with said at least one in-vehicle element in response to said status request signal; and

    a second radio-frequency circuit including a second radio-frequency identification tag coupled to said at least one in-vehicle element and operable to inductively generate a second status signal;

    wherein when said seat belt tongue is latched within said seat belt buckle, said first radio-frequency circuit is inactive and said second radio-frequency identification tag is active.

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