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    • 1. 发明授权
    • Dynamic EAS detection system and method
    • 动态EAS检测系统及方法
    • US08587489B2
    • 2013-11-19
    • US12134827
    • 2008-06-06
    • Harry OungKefeng Zeng
    • Harry OungKefeng Zeng
    • H01Q7/08H01Q11/18H01Q21/00G08B13/22
    • H01Q1/2216H01Q3/26H01Q7/00H01Q19/134
    • This invention relates to dynamically controlled, electronic article surveillance (EAS) systems whereby an array of antenna elements is digitally phased and actively driven for concurrent transmission, and digitally phased and combined in the receiver unit to improve security tag detection. In particular, the individual frequency and phase of the plurality of the transmit/receive signals are rapidly varied to allow for automated manipulation (steering) of the transmit field pattern and receive field sensitivity. It is the object of this invention to achieve the following features via means of digital phasing and dynamic computer control: sufficient far-field cancellation, null-free detection and uncompromised detection performance regardless of tag's orientation.
    • 本发明涉及动态控制的电子物品监视(EAS)系统,其中天线元件阵列被数字相位并且被主动地驱动并行传输,并且在接收器单元中数字相位并组合以改善安全标签检测。 特别地,多个发射/接收信号的单个频率和相位迅速变化,以允许发射场图案的自动操纵(导向)和接收场灵敏度。 本发明的目的是通过数字定相和动态计算机控制来实现以下特征:足够的远场取消,无空间检测和无损检测性能,而不管标签的方向如何。
    • 2. 发明授权
    • Phase coupler for rotating fields
    • 旋转场相位耦合器
    • US08933790B2
    • 2015-01-13
    • US12433375
    • 2009-04-30
    • Harry OungKefeng Zeng
    • Harry OungKefeng Zeng
    • H04Q5/22H01Q1/22G08B13/24H01Q3/26H01Q7/00H01Q7/06
    • H01Q1/2216G08B13/2471G08B13/2474G08B13/2477H01Q3/26H01Q7/00H01Q7/06
    • This invention relates to dynamically controlled, electronic article surveillance (EAS) systems whereby an array of antenna elements is digitally phased and actively driven for concurrent transmission, and digitally phased and combined in the receiver unit to improve detection. In particular, the individual frequency and phase of the plurality of the transmit/receive signals are rapidly varied to allow for automated manipulation (steering) of the transmit field pattern and receive field sensitivity. The invention achieves the following features via means of digital phasing and dynamic computer control: sufficient far-field cancellation, null-free detection and uncompromised detection performance regardless of tag's orientation while using single transmission drivers to drive entire antenna structures, whether loop antenna or ferrite core antenna, using a phase coupler, thereby allowing more efficient system operation or additional features such as deactivator antenna operation.
    • 本发明涉及动态控制的电子物品监视(EAS)系统,其中天线元件阵列被数字相位并且被主动地驱动并行传输,并且在接收器单元中数字相位并组合以改善检测。 特别地,多个发射/接收信号的单个频率和相位迅速变化,以允许发射场图案的自动操纵(导向)和接收场灵敏度。 本发明通过数字定相和动态计算机控制实现以下特征:无论标签的方向如何,使用单个传输驱动器驱动整个天线结构,无论是环形天线还是铁氧体,足够的远场消除,无空间检测和无损检测性能 核心天线,使用相位耦合器,从而允许更有效的系统操作或诸如停用天线操作的附加特征。
    • 3. 发明申请
    • PHASE COUPLER FOR ROTATING FIELDS
    • 旋转相位相位耦合器
    • US20090261976A1
    • 2009-10-22
    • US12433375
    • 2009-04-30
    • Harry OungKefeng Zeng
    • Harry OungKefeng Zeng
    • G08B13/22
    • H01Q1/2216G08B13/2471G08B13/2474G08B13/2477H01Q3/26H01Q7/00H01Q7/06
    • This invention relates to dynamically controlled, electronic article surveillance (EAS) systems whereby an array of antenna elements is digitally phased and actively driven for concurrent transmission, and digitally phased and combined in the receiver unit to improve detection. In particular, the individual frequency and phase of the plurality of the transmit/receive signals are rapidly varied to allow for automated manipulation (steering) of the transmit field pattern and receive field sensitivity. The invention achieves the following features via means of digital phasing and dynamic computer control: sufficient far-field cancellation, null-free detection and uncompromised detection performance regardless of tag's orientation while using single transmission drivers to drive entire antenna structures, whether loop antenna or ferrite core antenna, using a phase coupler, thereby allowing more efficient system operation or additional features such as deactivator antenna operation.
    • 本发明涉及动态控制的电子物品监视(EAS)系统,其中天线元件阵列被数字相位并且被主动地驱动并行传输,并且在接收器单元中数字相位并组合以改善检测。 特别地,多个发射/接收信号的单个频率和相位迅速变化,以允许发射场图案的自动操纵(导向)和接收场灵敏度。 本发明通过数字定相和动态计算机控制实现以下特征:无论标签的方向如何,使用单个传输驱动器驱动整个天线结构,无论是环形天线还是铁氧体,足够的远场消除,无空间检测和无损检测性能 核心天线,使用相位耦合器,从而允许更有效的系统操作或诸如停用天线操作的附加特征。
    • 4. 发明申请
    • DYNAMIC EAS DETECTION SYSTEM AND METHOD
    • 动态EAS检测系统及方法
    • US20080303673A1
    • 2008-12-11
    • US12134827
    • 2008-06-06
    • Harry OungKefeng Zeng
    • Harry OungKefeng Zeng
    • G08B13/22
    • H01Q1/2216H01Q3/26H01Q7/00H01Q19/134
    • This invention relates to dynamically controlled, electronic article surveillance (EAS) systems whereby an array of antenna elements is digitally phased and actively driven for concurrent transmission, and digitally phased and combined in the receiver unit to improve security tag detection. In particular, the individual frequency and phase of the plurality of the transmit/receive signals are rapidly varied to allow for automated manipulation (steering) of the transmit field pattern and receive field sensitivity. It is the object of this invention to achieve the following features via means of digital phasing and dynamic computer control: sufficient far-field cancellation, null-free detection and uncompromised detection performance regardless of tag's orientation.
    • 本发明涉及动态控制的电子物品监视(EAS)系统,其中天线元件阵列被数字相位并且被主动地驱动并行传输,并且在接收器单元中数字相位并组合以改善安全标签检测。 特别地,多个发射/接收信号的单个频率和相位迅速变化,以允许发射场图案的自动操纵(导向)和接收场灵敏度。 本发明的目的是通过数字定相和动态计算机控制来实现以下特征:足够的远场取消,无空间检测和无损检测性能,而不管标签的方向如何。