公开(公告)号：WO2006096782A1

公开(公告)日：2006-09-14

申请号：PCT/US2006/008294

申请日：2006-03-07

Applicant: SENSORMATIC ELECTRONICS CORPORATION

Inventor： OAKES, Jeffrey, T. ,  FREDERICK, Thomas, J.

IPC: G01V15/00 ,  G08B13/24

CPC classification number: H04B1/40 ,  G01V15/00

Abstract: Adaptive transmission of a tag activation signal and. detection of a tag. By monitoring the effects of a load on a tag activation signal, a signal analyzer adjusts the transmission waveform from which the signal is generated so that the next tag activation signal transmitted into the load more closely corresponds to a desired activation signal.

Abstract translation: 自适应传输标签激活信号和。 检测标签。 通过监视负载对标签激活信号的影响，信号分析器调整从其产生信号的传输波形，使得发送到负载的下一个标签激活信号更接近地对应于期望的激活信号。

公开(公告)号：WO2002077940A1

公开(公告)日：2002-10-03

申请号：PCT/US2002/008921

申请日：2002-03-22

Applicant: SENSORMATIC ELECTRONICS CORPORATION

Inventor： FREDERICK, Thomas, J.

IPC: G08B13/14

CPC classification number: G08B13/2471

Abstract: Digital implementation of electronic article surveillance (EAS) detection filtering for pulsed EAS systems is provided. Embodiments include direct implementation as a quadrature matched filter bank (Fig. 9), as an envelope detector (Fig. 10), a correlation receiver (Fig. 11), and as a discrete Fourier transform (Fig. 12). Pre-detection nonlinear filtering (Fig. 13) is also provided for impulsive noise environments.

Abstract translation: 提供了用于脉冲EAS系统的电子物品监视（EAS）检测过滤的数字实现。 实施例包括作为正交匹配滤波器组（图9）的直接实现，作为包络检测器（图10），相关接收器（图11）和作为离散傅里叶变换（图12）。 还提供了预脉冲噪声环境的预检测非线性滤波（图13）。

公开(公告)号：WO2002063586A2

公开(公告)日：2002-08-15

申请号：PCT/US2002/003647

申请日：2002-02-08

Applicant: SENSORMATIC ELECTRONICS CORPORATION

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：WO1997018541A1

公开(公告)日：1997-05-22

申请号：PCT/US1996018264

申请日：1996-11-13

Applicant: SENSORMATIC ELECTRONICS CORPORATION

Inventor： SENSORMATIC ELECTRONICS CORPORATION ,  BETTINE, Dale, R. ,  FREDERICK, Thomas, J.

IPC: G08B13/14

CPC classification number: G08B13/2471

Abstract: A signal received in an electronic article surveillance system (100) is comb-filtered (150, 150') to remove interference. A second comb-filtering fucntion (154, 154') is provided to detect occasions when the first comb-filtering generates ringing artifacts in response to impulsive noise. Alarm indications (133) are inhibited at times when the artifacts due to impulsive noise are detected. Bandwiths of the filtering functions are adjustable in response to operator input (182).

Abstract translation: 在电子物品监视系统（100）中接收的信号被梳状滤波（150,150'）以消除干扰。 提供第二梳状滤波功能（154,154'）以检测当第一梳状滤波响应于脉冲噪声产生振铃伪影时的场合。 在检测到由于冲动噪声引起的人为因素时，报警指示（133）被禁止。 过滤功能的带宽可以响应于操作员输入（182）而调节。

公开(公告)号：WO2002063771A2

公开(公告)日：2002-08-15

申请号：PCT/US2002/002485

申请日：2002-01-25

Applicant: SENSORMATIC ELECTRONICS CORPORATION

Inventor： FREDERICK, Thomas, J. ,  OAKES, Jeffrey, T.

IPC: H03L7/07

CPC classification number: G08B13/2488 ,  H03L7/07 ,  H03L7/0992

Abstract: A distributed wireless phase locked loop system for synchronizing the transmit carrier's modulating waveform, such as the transmitter pulse timing in a pulsed EAS system and the transit sweeping function for swept RF synchronization, is provided. To remove the effect of phase noise on the power line signal, a phase locked loop is used to filter this signal. The filtered output is used as a reference to a second phase locked loop tied to a numerically controlled oscillator and the received signal to provide a distributed phase looked loop algorithm that is wireless, and automatically synchronizes adjacent EAS systems.

Abstract translation: 提供了用于使发射载波的调制波形同步的分布式无线锁相环系统，例如脉冲EAS系统中的发射机脉冲定时和用于扫频RF同步的中继扫描功能。 为了消除相位噪声对电源线信号的影响，使用锁相环来对该信号进行滤波。 滤波后的输出用作连接到数控振荡器的第二个锁相环的参考，接收信号提供无线的分布式相位循环算法，并自动同步相邻的EAS系统。

公开(公告)号：WO2002063585A1

公开(公告)日：2002-08-15

申请号：PCT/US2002/003570

申请日：2002-02-05

Applicant: SENSORMATIC ELECTRONICS CORPORATION

Inventor： FREDERICK, Thomas, J. ,  OAKES, Jeffrey, T.

IPC: G08B13/24

CPC classification number: G08B13/2471

Abstract: In an EAS system and method, a reference antenna is used to spatially separate the interference and tag signal allowing the interference signal to be removed, which improves performance of the EAS receiver. The reference antenna is coupled to the system by an adaptive filter, which can be a software filter that is continually adapting itself to optimum performance. The continuous adaptation obviates the need for manually tuning the coupling network and permits the system to perform at its optimum levle over long periods of time.

Abstract translation: 在EAS系统和方法中，使用参考天线来空间分离干扰和标签信号，允许干扰信号被去除，这提高了EAS接收机的性能。 参考天线通过自适应滤波器耦合到系统，自适应滤波器可以是连续适应自身以达到最佳性能的软件滤波器。 连续的适配消除了手动调谐耦合网络的需要，并允许系统在长时间内以其最佳的角度执行。

公开(公告)号：WO1997046989A1

公开(公告)日：1997-12-11

申请号：PCT/US1997/007959

申请日：1997-05-09

Applicant: SENSORMATIC ELECTRONICS CORPORATION

Inventor： FREDERICK, Thomas, J. ,  GOODRICH, Steven ,  BETTINE, Dale, R.

IPC: 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，估计所得到的每个子序列的平均值，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。

公开(公告)号：WO2008057591A2

公开(公告)日：2008-05-15

申请号：PCT/US2007/023567

申请日：2007-11-07

Applicant: SENSORMATIC ELECTRONICS CORPORATION

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物品监视（“EAS”）单元的操作的方法和系统，其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产生同步主信号并将主同步信号发送到 多个EAS单元。 该方法和系统还可以包括辅同步主机，其可配置为中继主同步信号。

公开(公告)号：WO2008002304A1

公开(公告)日：2008-01-03

申请号：PCT/US2006/025052

申请日：2006-06-27

Applicant: SENSORMATIC ELECTRONICS CORPORATION

Inventor： OAKES, Jeffrey, Thomas ,  FREDERICK, Thomas, J. ,  FREDERICK, Richard ,  HERRING, Richard

IPC: G08B13/24

CPC classification number: G08B13/2488 ,  G08B13/2408

Abstract: A system and method for providing wireless synchronized operation of electronic article surveillance (EAS) systems are provided. The method may include communicating wirelessly between each of a plurality of controllers connected to a plurality of detectors of the plurality of EAS systems and receiving with a communications receiver of each of the controllers wireless communications from at least some of the other plurality of controllers. The communications receiver may be separate from a tag detection receiver.

Abstract translation: 提供了一种用于提供电子物品监视（EAS）系统的无线同步操作的系统和方法。 该方法可以包括在连接到多个EAS系统中的多个检测器的多个控制器中的每个控制器之间进行无线通信，并且与控制器中的每一个的通信接收器接收来自其他多个控制器中的至少一些的无线通信。 通信接收机可以与标签检测接收机分开。

公开(公告)号：WO2004016002A3

公开(公告)日：2004-02-19

申请号：PCT/US2003/025113

申请日：2003-08-11

Applicant: SENSORMATIC ELECTRONICS CORPORATION

Inventor： FREDERICK, Thomas, J. ,  OAKES, Jeffrey, T.

IPC: G08B13/14

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.