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Method and system for providing tracking services to locate an asset

  • US 8,049,617 B2
  • Filed: 03/10/2011
  • Issued: 11/01/2011
  • Est. Priority Date: 08/01/2003
  • Status: Expired due to Fees
First Claim
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1. A tracking system comprising:

  • a portable tracking device operable to be physically associated with a movable object of interest, the portable tracking device including,a transmitter operable to output electromagnetic signals at an output frequency corresponding to a first frequency range associated with communication with at least one relatively proximate stationary, geographically limited wireless transceiver of a dispersed plurality thereof, wherein each of the plurality has an identifiable fixed location in an associated tracking area,a receiver including an input operable to receive electromagnetically propagated signals along a first input frequency range corresponding to the first frequency range,the receiver further including an input operable to receive electromagnetically propagated signals along a second input frequency range unique to the first input frequency range,a data storage inclusive of an ID memory location operable to store identification data corresponding to the portable tracking device;

    the data storage further inclusive of a device status memory location operable to store status data corresponding to an operational status of the portable tracking device,the transmitter further operable to transmit signals representative of the identification data; and

    whereinthe transmitter further operable to transmit signals representative of the device status.

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