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Multi-modal active RFID tag with biometric sensors, systems and methods of ITV tracking

  • US 7,982,601 B2
  • Filed: 11/12/2007
  • Issued: 07/19/2011
  • Est. Priority Date: 03/22/2004
  • Status: Active Grant
First Claim
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1. A radio frequency identification and autonomous tracking system comprising:

  • a) an active, configurable, multi-mode radio frequency identification tag having an internal microprocessor, a memory structure, and a primary and a secondary communication mode, each of which has at least one of uni-directional or bi-directional sensing and communication capability, said primary communication mode comprising a radio frequency transceiver and said secondary communication mode comprising at least one of an optical transceiver and an ultra-sound transceiver;

    b) at least one reader communicatively coupled with and adapted with a radio frequency receiver to receive signals from the radio frequency identification tag via the radio frequency transceiver of the radio frequency identification tag;

    c) at least one illuminator, positioned within communication range of said tag to sense said illuminator, communicatively coupled with and adapted with an optical transmitter or an ultrasound transmitter to send triggering information signals to the radio frequency identification tag via the secondary mode optical or ultrasound transceiver of the radio frequency identification tag;

    d) said tag microprocessor is configured, upon receipt of, or absence of receipt of, a secondary mode communication signal from said illuminator, for transmission of signals by said tag to said reader via said radio frequency primary communication mode, said tag transmission signals representing information from said tag or said illuminator, data from a sensor, tag identification, identification of an object or person with which said tag is associated, illuminator identification, and combinations thereof; and

    e) wherein said radio frequency identification tag is adapted to transmit to said reader at least one of identification data of an illuminator sensed in its communication range and a signal representative of a condition that no-illuminator-is-sensed when said tag does not receive a signal from at least one of said illuminators in its communication range.

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