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公开(公告)号：EP1399899A1
公开(公告)日：2004-03-24
申请号：EP02739273.7
申请日：2002-05-13
IPC分类号： G08B13/24
CPC分类号： G08B13/2411 , G08B13/2482 , G08B13/2488
摘要： In general, the invention is directed to techniques for creating and controlling a magnetic field for use with electronic article surveillance (EAS) markers. In particular, the techniques make use of current switching devices to generate a signal having one or more current pulses for creating the magnetic field. An electronic article surveillance (EAS) system includes a coil to create a magnetic field for changing a status of an EAS marker and a drive unit to output a signal having one or more current pulses for energizing the coil. A programmable processor within the EAS system controls the drive unit to generate the output signal according to a desired profile. By selectively activating and deactivating current switching devices within the drive unit, the processor can direct the drive unit to generate the output signal according to a desired profile having a number of current pulses of different amplitudes and direction.
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2.发明公开DEVICE FOR CHANGING THE STATUS OF DUAL STATUS MAGNETIC ELECTRONIC ARTICLE SURVEILLANCE MARKERS 有权DEVICE关于修订磁性标记物品监控的双重国度
公开(公告)号：EP1299869A2
公开(公告)日：2003-04-09
申请号：EP00973610.9
申请日：2000-10-17
IPC分类号： G08B13/24
CPC分类号： G08B13/242 , G08B13/2417 , G08B13/2457
摘要： A device is disclosed for activating and deactivating magnetic electronic article surveillance (EAS) markers, and particularly those EAS markers that are associated with magnetically recorded media. In one embodiment, the device includes control circuitry comprising a coil, such as a solenoid-type coil, that provides a substantially uniform magnetic field that reliably activates and deactivates the marker, yet doesn't damage the magnetically-recorded media.
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公开(公告)号：EP1399901B1
公开(公告)日：2005-11-30
申请号：EP02780746.0
申请日：2002-04-09
IPC分类号： G08B13/24
CPC分类号： G08B13/2411 , G08B13/2417
摘要： A device is disclosed for activating and deactivating magnetic electronic article surveillance (EAS) markers. In one embodiment, the device includes control circuitry comprising a coil, such as a solenoid-type coil, that provides a magnetic field in one direction and another coil that provides a magnetic field in a substantially perpendicular direction, so that EAS markers that pass through the device are positioned generally in the plane defined by the first and second directions.
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4.发明授权DEVICE FOR CHANGING THE STATUS OF DUAL STATUS MAGNETIC ELECTRONIC ARTICLE SURVEILLANCE MARKERS 有权DEVICE关于修订磁性标记物品监控的双重国度
公开(公告)号：EP1299869B1
公开(公告)日：2004-12-22
申请号：EP00973610.9
申请日：2000-10-17
IPC分类号： G08B13/24
CPC分类号： G08B13/242 , G08B13/2417 , G08B13/2457
摘要： A device is disclosed for activating and deactivating magnetic electronic article surveillance (EAS) markers, and particularly those EAS markers that are associated with magnetically recorded media. In one embodiment, the device includes control circuitry comprising a coil, such as a solenoid-type coil, that provides a substantially uniform magnetic field that reliably activates and deactivates the marker, yet doesn't damage the magnetically-recorded media.
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公开(公告)号：EP1399899B1
公开(公告)日：2004-12-29
申请号：EP02739273.7
申请日：2002-05-13
IPC分类号： G08B13/24
CPC分类号： G08B13/2411 , G08B13/2482 , G08B13/2488
摘要： In general, the invention is directed to techniques for creating and controlling a magnetic field for use with electronic article surveillance (EAS) markers. In particular, the techniques make use of current switching devices to generate a signal having one or more current pulses for creating the magnetic field. An electronic article surveillance (EAS) system includes a coil to create a magnetic field for changing a status of an EAS marker and a drive unit to output a signal having one or more current pulses for energizing the coil. A programmable processor within the EAS system controls the drive unit to generate the output signal according to a desired profile. By selectively activating and deactivating current switching devices within the drive unit, the processor can direct the drive unit to generate the output signal according to a desired profile having a number of current pulses of different amplitudes and direction.
摘要翻译： 通常，本发明涉及用于创建和控制与电子物品监视（EAS）标记一起使用的磁场的技术。 特别地，这些技术利用电流开关装置来生成具有用于产生磁场的一个或多个电流脉冲的信号。 电子物品监视（EAS）系统包括用于产生用于改变EAS标记的状态的磁场的线圈和用于输出具有用于激励线圈的一个或多个电流脉冲的信号的驱动单元。 EAS系统内的可编程处理器控制驱动单元根据期望的简档生成输出信号。 通过选择性地激活和去激活驱动单元内的电流开关装置，处理器可以指示驱动单元根据具有不同幅度和方向的多个电流脉冲的期望曲线来产生输出信号。
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公开(公告)号：EP1399901A1
公开(公告)日：2004-03-24
申请号：EP02780746.0
申请日：2002-04-09
IPC分类号： G08B13/24
CPC分类号： G08B13/2411 , G08B13/2417
摘要： A device is disclosed for activating and deactivating magnetic electronic article surveillance (EAS) markers. In one embodiment, the device includes control circuitry comprising a coil, such as a solenoid-type coil, that provides a magnetic field in one direction and another coil that provides a magnetic field in a substantially perpendicular direction, so that EAS markers that pass through the device are positioned generally in the plane defined by the first and second directions.
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