×

System and method for 3-D position determination using RFID

  • US 7,489,240 B2
  • Filed: 05/03/2005
  • Issued: 02/10/2009
  • Est. Priority Date: 05/03/2005
  • Status: Active Grant
First Claim
Patent Images

1. An RFID tag, comprising:

  • an RF transceiver;

    a memory including information indicative of a geographic location of the RFID tag and information indicative of a confidence level associated with the location of the RFID tag, the memory in communication with the RF transceiver; and

    an antenna in communication with the RF transceiver configured to receive signals from and send signals to an RFID reader;

    wherein the RFID tag is configured to obtain at least some of the information indicative of the location of the RFID tag as a result of interacting with other devices and to exchange confidence level information with a second RFID tag, wherein a processor in the RFID tag updates is configured to update the location information if it has a confidence level less than that of the second RFID tag.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×