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1.发明授权Antenna arrangement with reduced coupling between transmit antenna and receive antenna 失效发射天线与接收天线之间减少耦合的天线布置
公开(公告)号：US5321412A
公开(公告)日：1994-06-14
申请号：US8417
申请日：1993-01-25
CPC分类号： G08B13/2471 , G06K7/0008 , G06K7/10316 , G06K7/10336 , G08B13/2474 , H01Q7/00
摘要： An antenna arrangement in which a first antenna means is arranged to define a null contour adjacent the first antenna means and at which the magnetic flux from the first antenna means is substantially a null and in which a second antenna means is arranged to substantially follow the null contour.
摘要翻译： 一种天线装置，其中第一天线装置被布置成限定与第一天线装置相邻的零轮廓，并且来自第一天线装置的磁通量基本上为零，并且第二天线装置布置成基本上跟随零 轮廓。
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2.发明授权Electronic article surveillance system with antenna array for enhanced field falloff 失效具有天线阵列的电子物品监控系统，用于增强现场衰减
公开(公告)号：US5051726A
公开(公告)日：1991-09-24
申请号：US567260
申请日：1990-08-14
CPC分类号： G08B13/2471
摘要： A system for use in detecting the presence of an electronic article surveillance tag in an area subject to surveillance comprises first and second antenna units disposed on opposed sides of the area, each of the antenna units incorporating therein at least first and second antennas circumscribing a common center thereof at respective different distances from the common center. Excitation circuitry is provided for exciting each first antenna at a greater level than each second antenna, the excitation of the first and second antennas by the exciting circuitry being of respective opposite phasing. The system further comprises a receiver connected to the first and second antenna units and alarm circuitry connected to the receiver to provide output indication of the presence of the tag in the area subject to surveillance.
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3.发明授权
公开(公告)号：US5949318A
公开(公告)日：1999-09-07
申请号：US288088
申请日：1994-08-10
CPC分类号： G08B13/2408 , G08B13/2411 , G08B13/2434 , G08B13/2437 , G08B13/244 , G08B13/2442
摘要： An apparatus for use in activating and/or deactivating an EAS tag which comprises a support, a first number of one or more first discrete small magnets arranged in a first row and a second number of one or more second discrete small magnets arranged in a second row. Each first discrete small magnet is situated adjacent a second discrete small magnet and has a first region of a first magnetic polarity and a second region supported on the support of a second magnetic polarity. Each second discrete small magnet has a first region of the second magnetic polarity and a second region supported on the support and of the first magnetic polarity.
摘要翻译： 一种用于激活和/或去激活EAS标签的装置，其包括支撑件，布置在第一排中的第一数量的一个或多个第一分立小磁体和布置在第二行中的第二数量的一个或多个第二分立小磁体 行。 每个第一离散的小磁体位于第二离散的小磁体附近，并且具有第一磁极性的第一区域和支撑在第二磁极性的支撑体上的第二区域。 每个第二离散小磁体具有第二磁极性的第一区域和支撑在支撑件上的第二区域和第一磁极性的第二区域。
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公开(公告)号：US5218371A
公开(公告)日：1993-06-08
申请号：US567149
申请日：1990-08-14
CPC分类号： G06K7/10336 , G06K7/0008 , G06K7/10316 , H01Q21/29 , H01Q7/00
摘要： An antenna system comprises at least first and second antennas circumscribing a common center thereof at respective different distances from the common center, and circuitry for exciting the first antenna at a greater level than the second antenna, the excitation of the first and second antennas by such exciting circuitry being of respective opposite phasing. The excitation circuitry is operative to provide first fields adjacent the antenna system to a predetermined distance therefrom which are essentially controlled by the excitation of the first antenna and to provide for second fields beyond the predetermined distance which are of lesser strength than the first fields and are determined by both of the first and second antennas.
摘要翻译： 天线系统包括至少第一和第二天线，其围绕与公共中心分开不同距离的公共中心，以及用于以比第二天线更高的水平激励第一天线的电路，第一和第二天线的激发由第二天线 激励电路各自相反的定相。 激励电路可操作地提供与天线系统相邻的第一场距离其预定距离，其基本上由第一天线的激励控制，并提供超过预定距离的第二场，其比第一场强度小，强度比第一场强 由第一和第二天线两者确定。
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5.发明授权公开(公告)号：US09831724B2
公开(公告)日：2017-11-28
申请号：US14956803
申请日：2015-12-02
CPC分类号： H02J50/20 , G07C9/00007
摘要： A method for operating a Wearable Access Sensor (“WAS”). The methods comprise: capturing RF energy by the WAS, where the RF energy is emitted within a surrounding environment from equipment disposed at an access point of a restricted area; passing the RF energy through a switch that is normally in a position which provides an electrical connection between an antenna of the WAS and a full wave rectifier of the WAS; performing operations by the WAS to convert the RF energy into direct current for generating electric power; supplying the electric power to an energy storage device of the WAS for charging the energy storage device to a pre-determined voltage level; and supplying power from the energy storage device to a controller of the WAS when a voltage level of the energy storage device is equal to or greater than the pre-determined voltage level.
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公开(公告)号：US09384607B1
公开(公告)日：2016-07-05
申请号：US14558796
申请日：2014-12-03
IPC分类号： G07C9/00
CPC分类号： G07C9/00111 , G07C9/00 , G07C9/00309 , G07C2009/00341 , G07C2009/0038 , G07C2009/00603 , G07C2009/00769
摘要： Systems (100) and methods (300, 400) for controlling access to a restricted area. The methods involve: determining whether a person desires to enter or exit the restricted area based on (1) Received Signal Strength Indicator (“RSSI”) measurement data specifying a power present in a signal received from a Wearable Access Sensor (“WAS”) worn by the person or (2) rate of change data specifying a rate of change of a charging voltage of an energy storage device disposed within the WAS; and causing actuation of a mechanical actuator to enable the person's entrance into or exit from the restricted area when a determination is made that the person desires to enter or exit the restricted area.
摘要翻译： 用于控制对受限区域的访问的系统（100）和方法（300,400）。 所述方法包括：（1）接收信号强度指示符（“RSSI”）测量数据确定人是否希望进入或退出受限区域，该数据指定从可佩戴接入传感器（“WAS”）接收的信号中存在的功率， 由人员佩戴，或者（2）变更率数据，指定设在WAS内的储能装置的充电电压的变化率; 并且当确定人员想要进入或离开受限区域时，引起机械致动器的致动以使得人进入或离开限制区域。
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公开(公告)号：US20160163137A1
公开(公告)日：2016-06-09
申请号：US14956902
申请日：2015-12-02
IPC分类号： G07C9/00
CPC分类号： G07C9/00111 , G07C9/00031 , G07C9/00309 , G07C2009/00769 , G07C2209/14
摘要： Systems and methods for controlling access to a Restricted Area (“RA”). The methods involve: determining whether a person desires to enter RA; checking whether the person is authorized to enter RA using a first unique identifier associated with a wearable access sensor being worn thereby; causing the person's Portable Communication Device (“PCD”) to transmit a second unique identifier and location information useful in determining the PCD's location within a surrounding environment, when a determination is made that the person is authorized to enter RA; using the second unique identifier and location information to confirm that the person is currently located at an access point of RA; and causing actuation of a mechanical actuator to enable the person's entrance into RA when it is determined that the person desires to enter RA, the person is authorized to enter RA, and the person is currently located at the access point of RA.
摘要翻译： 用于控制对限制区域（“RA”）的访问的系统和方法。 方法包括：确定一个人是否希望进入RA; 使用与由此佩戴的可穿戴访问传感器相关联的第一唯一标识符来检查该人是否被授权进入RA; 当确定该人被授权进入RA时，使该人的便携式通信设备（“PCD”）发送用于确定PCD在周围环境中的位置的第二唯一标识符和位置信息; 使用所述第二唯一标识符和位置信息来确认所述人当前位于RA的接入点处; 并且当确定所述人员需要进入RA，该人被授权进入RA并且该人当前位于RA的接入点时，引起机械致动器的致动以使得该人进入RA。
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8.发明授权公开(公告)号：US08711046B2
公开(公告)日：2014-04-29
申请号：US13171822
申请日：2011-06-29
申请人： Richard L. Copeland , Edward Day
发明人： Richard L. Copeland , Edward Day
IPC分类号： H01Q21/00
CPC分类号： H01Q1/2225 , H01Q5/357 , H01Q7/00 , H01Q9/28 , H01Q21/30 , Y10T29/49016
摘要： A radio frequency identification (RFID) antenna exhibiting a multiple resonance is disclosed. In one exemplary embodiment, a dipole antenna and a loop antenna are disposed upon a substrate and have dimensions and orientation to exhibit the multiple resonance. The dipole antenna may exhibit a first dipole section having a first length and second dipole section having a second length. The loop antenna may be disposed in a region of the dipole antenna. The ratio of the perimeter of the loop antenna to the sum of the lengths of the dipole sections may be selected to exhibit the multiple resonance.
摘要翻译： 公开了一种表现出多重共振的射频识别（RFID）天线。 在一个示例性实施例中，偶极天线和环形天线设置在基板上并具有显示多重共振的尺寸和取向。 偶极天线可以表现出具有第一长度的第一偶极子部分和具有第二长度的第二偶极子部分。 环形天线可以设置在偶极子天线的区域中。 可以选择环形天线的周长与偶极子部分的长度之和的比率以表现出多重谐振。
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公开(公告)号：US07317426B2
公开(公告)日：2008-01-08
申请号：US11051235
申请日：2005-02-04
IPC分类号： H01Q7/08
CPC分类号： H01Q7/08 , G06K7/10336 , H01Q19/104 , H01Q21/24
摘要： A core antenna system for use in electronic article surveillance (EAS) and radio frequency identification (RFID) systems. The core antenna system may include a core antenna. The core antenna may include a core, a first resonant winding disposed around at least a portion of the core, the first resonant winding having a first number of winding turns N1, and a second non-resonant winding disposed around at least a portion of the core, the second non-resonant winding having a second number of winding turns N2, the second number of turns greater than or equal to the first number of turns. The core antenna may be mounted on a shield plate and tuned to an operating frequency on the shield plate such that when the shielded core antenna is further mounted on a mounting surface, e.g., of a checkstand, no significant de-tuning of the antenna takes place.
摘要翻译： 用于电子物品监控（EAS）和射频识别（RFID）系统的核心天线系统。 核心天线系统可以包括核心天线。 核心天线可以包括芯，围绕芯的至少一部分设置的第一谐振绕组，第一谐振绕组具有第一数量的绕组匝N1和第二非谐振绕组，其围绕至少一部分绕组 所述铁芯，所述第二非谐振绕组具有第二数量的绕组匝数N 2，所述第二匝数大于或等于所述第一匝数。 核心天线可以安装在屏蔽板上并被调谐到屏蔽板上的工作频率，使得当屏蔽的核心天线进一步安装在例如校验台的安装表面上时，天线的显着的去调整不会 地点。
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10.发明授权公开(公告)号：US06181245B2
公开(公告)日：2001-01-30
申请号：US08912058
申请日：1997-08-15
IPC分类号： G08B1324
CPC分类号： G08B13/2408 , G08B13/2411 , G08B13/2434 , G08B13/2442
摘要： A material used to form a biasing element for a magnetomechanical EAS marker has a coercivity that is lower than the coercivity of biasing elements used in conventional magnetomechanical markers. The marker formed with the low coercivity material can be deactivated by applying an AC magnetic field at a level that is lower than is required for deactivation of conventional markers. The marker with the low coercivity bias element can also be deactivated when at a greater distance from a deactivation device than was previously practical.
摘要翻译： 用于形成用于磁电机械EAS标记的偏压元件的材料具有低于常规磁机械标记中使用的偏置元件的矫顽力的矫顽力。 用低矫顽力材料形成的标记可以通过施加低于常规标记失活所需的水平的交流磁场而失活。 当具有低矫顽力偏置元件的标记物可以在与去激活装置相比比以前更实际的距离处被去激活。
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