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16 条记录 (耗时 0.023 秒)

    Mobile EAS deactivator
    13.
    发明授权
    Mobile EAS deactivator 有权
    移动EAS去激活器

    公开(公告)号：US09437090B2

    公开(公告)日：2016-09-06

    申请号：US14211798

    申请日：2014-03-14

    申请人： Ronald B. Easter ,  Douglas A. Drew

    发明人： Ronald B. Easter ,  Douglas A. Drew

    IPC分类号： G08B13/24 ,  H01F13/00 ,  G07G1/00

    CPC分类号： G08B13/2411 ,  G07G1/00 ,  G07G1/12 ,  G08B13/246 ,  H01F13/006

    摘要： A deactivator device for a mobile Point of Sale (mPOS) systems includes a pair of spaced apart, fixed position electromagnets positioned and configured such that magnetic fields generated by the electromagnets aid one another to form a combined magnetic field; a battery; a capacitor; and an electronics assembly including a microcontroller configured to control storage of energy from the battery in the capacitor and to selectively provide a deactivation or activation pulse from the capacitor to the electromagnets. The components may be positioned in a housing configured for attachment to a mPOS mobile device.

    摘要翻译： 用于移动销售点（mPOS）系统的去激活装置包括一对间隔开的固定位置电磁体，其被定位和配置成使得由电磁体产生的磁场彼此帮助形成组合的磁场; 一个电池 电容器 以及电子组件，其包括被配置为控制来自电容器中的电池的能量存储的微控制器，并且选择性地提供从电容器到电磁体的去激活或激活脉冲。 组件可以被定位在被配置为附接到mPOS移动设备的外壳中。

    EAS system providing synchronized transmission
    14.
    发明授权
    EAS system providing synchronized transmission 有权
    EAS系统提供同步传输

    公开(公告)号：US08058994B2

    公开(公告)日：2011-11-15

    申请号：US11991689

    申请日：2005-09-09

    申请人： Gerardo Aguirre ,  Douglas A. Drew

    发明人： Gerardo Aguirre ,  Douglas A. Drew

    IPC分类号： G08B13/14

    CPC分类号： G08B13/2488

    摘要： A system and method for providing synchronized transmission in an electronic article surveillance (EAS) system is provided. The method includes determining a transmission timing difference between a plurality of units of the EAS system using a communication link of the EAS system and synchronizing transmissions for each of the plurality of units based on the transmission timing difference.

    摘要翻译： 提供了一种用于在电子物品监视（EAS）系统中提供同步传输的系统和方法。 该方法包括使用EAS系统的通信链路来确定EAS系统的多个单元之间的传输定时差异，并且基于传输定时差来同步多个单元中的每个单元的传输。

    Electronic article surveillance system having enhanced tag deactivation capacity
    15.
    发明授权
    Electronic article surveillance system having enhanced tag deactivation capacity 失效
    电子物品监控系统具有增强的标签禁用能力

    公开(公告)号：US5469142A

    公开(公告)日：1995-11-21

    申请号：US288087

    申请日：1994-08-10

    申请人： Adam S. Bergman ,  Douglas A. Drew

    发明人： Adam S. Bergman ,  Douglas A. Drew

    IPC分类号： G08B13/24 ,  H04B5/02

    CPC分类号： G08B13/242

    摘要： An electronic article surveillance tag deactivation system includes a transmitter, a receiver, a deactivation coil and a controller (microprocessor) for establishing time periods for operation of the transmitter, the receiver and the deactivation coil, and for selectively varying detection sensitivity of the receiver. Detection of a tag prior to deactivation is effected with the receiver at low sensitivity and redetection of the tag subsequent to deactivation is effected with the receiver at high sensitivity.

    摘要翻译： 电子物品监视标签去激活系统包括发射机，接收机，去激活线圈和用于建立发射机，接收机和去激活线圈的操作的时间段以及用于选择性地改变接收机的检测灵敏度的控制器（微处理器）。 在接收机处于低灵敏度之前对标签进行检测，并且在接收器以高灵敏度进行去激活之后重新检测标签。

    Adjusting magnetic bias field intensity in EAS presence detection system to enhance detection
    16.
    发明授权
    Adjusting magnetic bias field intensity in EAS presence detection system to enhance detection 失效

    公开(公告)号：US5406262A

    公开(公告)日：1995-04-11

    申请号：US78559

    申请日：1993-06-16

    申请人： Fred W. Herman ,  Lincoln H. Charlot, Jr. ,  Ming R. Lian ,  Douglas A. Drew

    发明人： Fred W. Herman ,  Lincoln H. Charlot, Jr. ,  Ming R. Lian ,  Douglas A. Drew

    IPC分类号： G08B13/24 ,  G08B13/14

    CPC分类号： G08B13/2482 ,  G08B13/2474 ,  G08B13/2488

    摘要： An EAS presence detection system includes a transmitter for transmitting an electromagnetic radiation signal of a first predetermined frequency into a surveillance zone; a tag for attachment to an article to be detected within the surveillance zone, the tag containing a transponder including a material that, when in the presence of a magnetic bias field within a predetermined magnetic field intensity range, responds to detection of electromagnetic radiation of the said first predetermined frequency by transmitting electromagnetic radiation of a second predetermined frequency that is either a multiple harmonic or a frequency-divided quotient of the first predetermined frequency or at the first frequency; a detection system disposed for detecting radiation of the second predetermined frequency within the surveillance zone; and a magnetic field source for providing a magnetic bias field within the predetermined magnetic field intensity range within the surveillance zone. The magnetic field source includes a coil disposed in or adjacent the surveillance zone and an adjustable current source for causing a current to flow through the coil to provide a magnetic bias field within the surveillance zone. The coil is a large aperture solenoid coil wound on a core of metallic material of high permeability and high magnetic saturation. The core may be shielded from the electromagnetic radiation field of the first predetermined frequency by a non-ferrous electrically conductive tube disposed around the coil. The amplitude of the current is adjusted to provide a magnetic bias field within said predetermined magnetic field intensity range within the surveillance zone. The amplitude of the current is varied to sweep the intensity of the magnetic bias field through such a range of magnetic field intensities as to cause the magnetic bias field within each portion of the surveillance zone to be within said predetermined magnetic field intensity range during at least a portion of said sweep. A control system is coupled to the detection system and the adjusting means to determine whether detection by the detection means of electromagnetic radiation at the second predetermined frequency is due to the movement of a tag through the surveillance system or is due to the presence of a stationary tag in or near the surveillance zone.