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Wireless tag scanning system

  • US 7,554,433 B2
  • Filed: 03/01/2006
  • Issued: 06/30/2009
  • Est. Priority Date: 03/28/2005
  • Status: Expired due to Fees
First Claim
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1. A wireless tag scanning system that scans a wireless tag using an electromagnetic wave, comprising:

  • movable means for moving an antenna section of a wireless tag scanning device in parallel with one axis on which a plurality of management objects having attached thereto wireless tags with their directivity aligned are arranged;

    position detection means for detecting a distance by which the antenna section moves;

    directivity control means for selectively directing the directivity of the antenna section of the wireless tag scanning device to a direction perpendicular to the move axis; and

    means for detecting the existence position of a wireless tag using detected identification information of the wireless tag and a move distance of the antenna section;

    wherein the arrangement space for the plural management objects is larger than half of the spatial resolution determined by the directivity in the move axis direction of the antenna section.

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