公开(公告)号：WO02063586A3

公开(公告)日：2003-03-13

申请号：PCT/US0203647

申请日：2002-02-08

Applicant: SENSORMATIC ELECTRONICS CORP

Inventor： FREDERICK THOMAS J

IPC: G08B13/24

CPC classification number: G08B13/2482 ,  G08B13/2471

Abstract: Conventional EAS systems, such as ULTRA*MAX, use noncoherent detection and a highly nonlinear post detection combining algorithm. It is well known that using the phase information that is present in the received signal has advantages in detection performance. This is difficult to do in conventional ULTRA*MAX receiver because of the combination of a narrow signal bandwidth and short receive window duration. A method to incorporate signal phase into the detector by differential coherent combining is provided, which significantly improves processing gain that was not previously obtainable.

Abstract translation: 传统的EAS系统，如ULTRA * MAX，使用非相干检测和高度非线性的后检测组合算法。 众所周知，使用存在于接收信号中的相位信息具有检测性能的优点。 这在传统的ULTRA * MAX接收机中很难做到，因为窄信号带宽和接收窗口持续时间短。 提供了通过差分相干组合将信号相位并入检测器的方法，这显着地提高了以前不可获得的处理增益。

公开(公告)号：WO2008057591A3

公开(公告)日：2008-11-27

申请号：PCT/US2007023567

申请日：2007-11-07

Applicant: SENSORMATIC ELECTRONICS CORP

Inventor： OAKES JEFFREY T ,  FREDERICK THOMAS J ,  AGUIRRE GERRY

IPC: G08B13/24

CPC classification number: G08B13/2488

Abstract: A method and system for synchronizing the operation of a plurality of electronic article surveillance ("EAS") units that includes receiving a global positioning satellite reference signal, generating a synchronization master signal using the global positioning satellite reference signal and transmitting the master synchronization signal to the plurality of EAS units. The method and system can further include a secondary synchronization master, which is configurable to relay the master synchronization signal.

Abstract translation: 一种用于同步多个电子商品防盗（“EAS”）单元的操作的方法和系统，所述方法和系统包括：接收全球定位卫星参考信号;使用全球定位卫星参考信号生成同步主信号;以及将主同步信号发送到 多个EAS单元。 该方法和系统可以进一步包括可配置为中继主同步信号的辅同步主设备。

公开(公告)号：WO2004016002A2

公开(公告)日：2004-02-19

申请号：PCT/US0325113

申请日：2003-08-11

Applicant: SENSORMATIC ELECTRONICS CORP

Inventor： FREDERICK THOMAS J ,  OAKES JEFFREY T

IPC: G08B13/24 ,  G08B29/18 ,  H04Q

CPC classification number: G08B13/2408 ,  G08B13/2482 ,  G08B29/18

Abstract: A ringdown canceller is provided for electronic article surveillance (EAS) tag response processing, which uses two adaptive replica signals and compares the replica signal phase to the receive signal phase to determine if there is a stationary EAS tag in the interrogation or detection zone. The adaptive replica buffers allow the system to adjust to changing ambient conditions, and adjust rapidly to an EAS tag that suddenly appears in the detection zone and becomes stationary, or to a stationary EAS tag that suddenly leaves the detection zone. The ringdown response of the transmitter circuit is constant, just like a stationary tag, and is removed from the receive signal in the same manner as a stationary tag.

Abstract translation: 为电子商品防盗（EAS）标签响应处理提供振铃消除器，该处理使用两个自适应复制信号并将复制信号相位与接收信号相位进行比较以确定在询问或检测区域中是否存在静止的EAS标签。 自适应复制缓冲区允许系统根据环境条件的变化进行调整，并迅速调整为突然出现在检测区域内并变得静止的EAS标签，或者突然离开检测区域的静止EAS标签。 发射器电路的振铃响应与固定标签一样是恒定的，并且以与固定标签相同的方式从接收信号中移除。

公开(公告)号：WO9746989A9

公开(公告)日：2004-03-18

申请号：PCT/US9707959

申请日：1997-05-09

Applicant: SENSORMATIC ELECTRONICS CORP

Inventor： FREDERICK THOMAS J ,  GOODRICH STEVEN ,  BETTINE DALE R

IPC: G08B13/24 ,  G08B13/187

CPC classification number: G08B13/2488 ,  G08B13/2471

Abstract: An electronic article surveillance system (100) includes a signal generator (22, 24, 26) for generating an interrogation signal (28) in an interrogation zone (30), an antenna (36) which receives a signal (34) present in the interrogation zone (30), and circuitry for cancelling interference. A hybrid interference component cancelling loop forms a digital interference estimate signal (108) which is converted (106) into an analog estimate signal, which is subtracted (102) from an input analog signal (40). The difference signal is digitized and subjected to additional digital interference cancellation processes (108). Each of the signal processing operations (108) entails performing a polyphase decomposition of a digital input signal, estimating a mean value of each of the resulting subsequences, and combining the estimated mean values to form an interference component estimate signal. An input sample window for a comb-filtering stage is phase adjusted relative to the interrogation signal to compensate for changes in phase of the marker signal (34).

Abstract translation: 电子物品监视系统（100）包括用于在询问区（30）中产生询问信号（28）的信号发生器（22,24,26），接收存在于所述询问区（30）中的信号（34）的天线 询问区（30）和消除干扰的电路。 混合干扰分量消除环形成数字干扰估计信号（108），其被转换（106）为模拟估计信号，其从输入模拟信号（40）中减去（102）。 差分信号被数字化并经受附加的数字干扰消除处理（108）。 每个信号处理操作（108）需要执行数字输入信号的多相分解，估计所得到的子序列中的每一个的平均值，并组合估计的平均值以形成干扰分量估计信号。 用于梳状滤波级的输入采样窗口相对于询问信号进行相位调整，以补偿标记信号（34）的相位变化。