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Identification information examination method and information obtaining apparatus

  • US 7,576,641 B2
  • Filed: 08/02/2004
  • Issued: 08/18/2009
  • Est. Priority Date: 07/31/2003
  • Status: Active Grant
First Claim
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1. An identification information examination method for an information obtaining apparatus mounted in a vehicle, comprising:

  • transmitting information including vehicle related information which is related to the vehicle and identification information that allows a transmission source of the vehicle related information to be identified;

    receiving the transmitted information;

    processing the received information and performing an examination concerning the identification information included in the received information; and

    when the examination concerning the identification information is performed, changing a reception sensitivity of the reception device by changing at least one of (i) a target reception voltage of the reception device and (ii) an orientation of the reception device for receiving a signal from a first reception sensitivity which is used when an examination concerning the identification information is not performed to a second reception sensitivity which is used when the examination concerning the identification information is performed.

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