Title:
タグ情報管理装置及びタグ情報管理用アンテナ
Document Type and Number:
Japanese Patent JP4138517
Kind Code:
B2
Abstract:
To provide a tag information managing device, using a reader writer, that can increase distances (width) of gateways of a management area to increase the quantity of passing articles or the passage range of articles.
The tag information managing device equipped with a tag as a movable information communication body and an interrogator communicating by an induced magnetic field so that the tag and interrogator are arranged in an arbitrary management area, is equipped with at least one loop antenna connected to the interrogator and at least one looped conductor arranged within a range the induced magnetic field from the loop antenna effectively operates.
COPYRIGHT: (C)2004,JPO&NCIPI
Inventors:
Osamu Furuya
Koji Moriya
Yoshinori Tanaka
Yuji Kasuyama
Koji Moriya
Yoshinori Tanaka
Yuji Kasuyama
Application Number:
JP2003027555A
Publication Date:
August 27, 2008
Filing Date:
February 04, 2003
Export Citation:
Assignee:
Hitachi Kokusai Electric Co., Ltd.
International Classes:
G06K17/00; G08B13/24; H01Q7/00; H04B1/59; H04B5/02
Domestic Patent References:
| JP10215210A | ||||
| JP2001085927A | ||||
| JP2001024548A | ||||
| JP2000138621A | ||||
| JP11175669A |
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