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US 2006/0214800 A1Published application
Wireless tag scanning system
AssigneeToshiba Tec Kabushiki Kaisha
InventorAtsushi Ishikawa
Life of this patent
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Abstract
Under the step management of a stepping motor, a move distance of an antenna of a wireless tag scanning device is calculated, and wireless tags are scanned in synchronization with a step move amount. The antenna controls its directivity using shield members etc., and lowers electromagnetic susceptibility in the moving direction. Accordingly, it becomes possible to detect a wireless tag located on a certain position, enabling position management with high resolution.
Claims6
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.
1 more element
Dependencies are inferred from the claim text.