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Point of sale inductive systems and methods

  • US 9,424,446 B2
  • Filed: 04/09/2015
  • Issued: 08/23/2016
  • Est. Priority Date: 04/08/2010
  • Status: Active Grant
First Claim
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1. A method, comprising:

  • providing an inductive power supply at a point of sale, the inductive power supply including a primary coil that is adapted to generate a time-varying electromagnetic field;

    providing a package at the point of sale, the package including a plurality of resonant circuits including a secondary coil and a luminescent load, each of the plurality of resonant circuits having a different resonant frequency; and

    selectively driving the primary coil with a plurality of different operating frequencies corresponding to at least two different resonant frequencies of the plurality of resonant circuits,wherein the luminescent load of a first one of the plurality of resonant circuits illuminates in response to the primary coil being driven with an operating frequency corresponding to the resonant frequency of the first one of the plurality of resonant circuits, andwherein the luminescent load of a second one of the plurality of resonant circuits illuminates in response to the primary coil being driven with an operating frequency corresponding to the resonant frequency of the second one of the plurality of resonant circuits.

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