Invention Grant
- Patent Title: Electronic article surveillance tag deactivation
- Patent Title (中): 电子物品监控标签停用
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Application No.: US13706673Application Date: 2012-12-06
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Publication No.: US09305447B2Publication Date: 2016-04-05
- Inventor: Richard Loyd Copeland , Ming-Ren Lian
- Applicant: Sensormatic Electronics, LLC
- Applicant Address: CH Neuhausen am Rheinfall
- Assignee: Tyco Fire & Security GmbH
- Current Assignee: Tyco Fire & Security GmbH
- Current Assignee Address: CH Neuhausen am Rheinfall
- Agency: Christopher & Weisberg, P.A.
- Agent Alan M. Weisberg
- Main IPC: H01Q21/20
- IPC: H01Q21/20 ; G08B13/24 ; H01Q9/16 ; H01Q1/22 ; H01Q21/06 ; H01Q21/29
Abstract:
A method and system for producing an electromagnetic field that exhibits a strong near field that is sufficient to deactivate an electronic article surveillance, EAS, tag and a weak far field that is insufficient to deactivate the EAS tag are disclosed. According to one embodiment, two half-wavelength dipoles spaced apart by about a half-wavelength are excited by oppositely phased signals.
Public/Granted literature
- US20140159901A1 ELECTRONIC ARTICLE SURVEILLANCE TAG DEACTIVATION Public/Granted day:2014-06-12
Information query
