公开(公告)号：US5754110A

公开(公告)日：1998-05-19

申请号：US612356

申请日：1996-03-07

Applicant: Lawrence Appalucci ,  Luis Francisco Soler Bonnin ,  Gary Thomas Mazoki ,  Roger Jay Peirce ,  Anthony Frank Piccoli ,  Mark James Rankin

Inventor： Lawrence Appalucci ,  Luis Francisco Soler Bonnin ,  Gary Thomas Mazoki ,  Roger Jay Peirce ,  Anthony Frank Piccoli ,  Mark James Rankin

IPC: G08B13/24 ,  H01F5/00 ,  G08B13/14

CPC classification number: G08B13/2414 ,  G08B13/2437 ,  G08B13/2442 ,  Y10T29/49004

Abstract: A security tag used with an electronic article surveillance system for detecting the presence of the tag within a surveilled area utilizing electromagnetic energy at a frequency within a predetermined detection frequency range includes a dielectric substrate having first and second opposing principle surfaces, a peripheral outer edge, and a resonant circuit capable of resonating at a frequency within the predetermined detection frequency range. The security tag also includes a guard member, in one embodiment a discontinuous conductive member, effectively electrically isolated from the resonant circuit, extending along at least a portion of the peripheral outer edge of the substrate for surrounding at least a portion of the resonant circuit. The guard member electrically isolates the resonant circuit to facilitate testing of the resonant circuit during an early stage of the manufacturing process when the resonant circuit is in web form.

Abstract translation: 一种与电子物品监视系统一起使用的安全标签，用于利用在预定检测频率范围内的频率的电磁能量来检测监视区域内的标签的存在，其包括具有第一和第二相对原理表面的电介质基板，外围外边缘， 以及能够以预定检测频率范围内的频率谐振的谐振电路。 安全标签还包括防护构件，在一个实施例中，与谐振电路有效地电绝缘的不连续导电构件沿着衬底的周边外边缘的至少一部分延伸，以围绕谐振电路的至少一部分。 当谐振电路处于网状时，保护构件将谐振电路电隔离，以便在制造过程的早期阶段对谐振电路进行测试。