Title:
【発明の名称】高められた磁界を降下させるためのアンテナアレイを有する電子物品監視システム
Document Type and Number:
Japanese Patent JP3118025
Kind Code:
B2
Abstract:
Surveillance of magnetically tagged articles in a control zone is effected by a system that employs an antenna configuration consisting of inner (I.C) and outer (O.C) coils. Both coils work in a tranceiver mode and are excited in antiphase.
Inventors:
Richard El. Copeland
Marcus B. Cup
Marcus B. Cup
Application Number:
JP16954691A
Publication Date:
December 18, 2000
Filing Date:
July 10, 1991
Export Citation:
Assignee:
Sensormatic Electronics Corporation
International Classes:
G01V3/08; G01V3/00; G01V15/00; G08B13/24; (IPC1-7): G01V15/00
Domestic Patent References:
| JP5412288A |
Other References:
【文献】欧州特許出願公開130286(EP,A1)
Attorney, Agent or Firm:
Masao Okabe (6 others)
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