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IC TAG READING AND WRITING DEVICE, ELECTRONIC APPARATUS, AND IC TAG READING AND WRITING METHOD

  • US 20120188059A1
  • Filed: 08/18/2010
  • Published: 07/26/2012
  • Est. Priority Date: 09/01/2009
  • Status: Abandoned Application
First Claim
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1. An IC tag reading and writing device which communicates with a plurality of kinds of IC tags over a plurality of communication frequencies, the IC tag reading and writing device comprising:

  • a plurality of communication units that are provided according to each of the plurality of frequencies, respectively, each of the plurality of communication unit including an antenna, a transmission and reception circuit, a first matching circuit that is connected to the transmission and reception circuit and matches the antenna with the transmission and reception circuit, a second matching circuit that is connected to a load circuit and matches the antenna with the load circuit, and a switching unit that selectively connects the antenna to anyone of the first matching circuit and the second matching circuit;

    a signal processing unit that communicates with the plurality of kinds of IC tags through the plurality of communication units; and

    a switching control unit that controls the switching unit of each of the plurality of communication units.

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