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Distributed wireless positioning engine method and assembly

  • US 20050070304A1
  • Filed: 09/30/2003
  • Published: 03/31/2005
  • Est. Priority Date: 09/30/2003
  • Status: Abandoned Application
First Claim
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1. A system for use with a portable wireless information device (WID) within a space, the WID including a transmitter for transmitting wireless WID signals, the system comprising:

  • a plurality of communication units spaced apart within the space, each unit cooperating with the WID to generate position information, the position information useable to generate a WID position estimate, the plurality of units including at least first and second sub-sets, each unit including at least one of a wireless receiver and a wireless transmitter;

    at least a first receiver; and

    at least a first processor linked to the at least a first receiver for receiving position information therefrom, the at least a first processor running at least first and second position estimating programs on position information associated with the first and second sub-sets, respectively, for identifying at least first and second WID position estimates within the space, respectively.

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