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System for determining a position of a moving transponder

  • US 20040160355A1
  • Filed: 02/14/2003
  • Published: 08/19/2004
  • Est. Priority Date: 02/14/2003
  • Status: Active Grant
First Claim
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1. System for determining a position of a moving transponder adapted to receive a substantially stationary magnetic field signal and to transmit a further signal, said system comprising:

  • a signal generating arrangement adapted to generate said stationary magnetic field signal for said transponder, said transponder being adapted to determine a plurality of signal strengths of said received magnetic field signal;

    at least one signal receiving arrangement, adapted to receive said further signal of said transponder, said transponder being adapted to insert at least one message portion in said further signal indicative of at least one of said plurality of signal received signal strengths;

    processing means adapted to determine said position in accordance with a plurality of said received signal strengths determined by said moving transponder.

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