公开(公告)号：WO02073563A2

公开(公告)日：2002-09-19

申请号：PCT/US0207496

申请日：2002-03-13

Applicant: SENSORMATIC ELECTRONICS CORP

Inventor： WHITEHEAD JAMES T

IPC: G08B13/24

CPC classification number: G08B13/2482 ,  G08B13/2462 ,  G08B13/2485

Abstract: The invention concerns a system for detecting multiple tags in a detection zone. The system includes an electronic tag detection system having first and second field generators, each having a respective antenna for generating an electromagnetic field in a detection zone defined between the antennas. Additionally, at least one of the field generators can be responsive to a presence of at least two electronically detectable tags in the detection zone, for varying an intensity of at least one of the electromagnetic fields.

Abstract translation: 本发明涉及用于检测检测区域中的多个标签的系统。 该系统包括具有第一和第二场发生器的电子标签检测系统，每个具有用于在天线之间定义的检测区域中产生电磁场的相应天线。 另外，场发生器中的至少一个可以响应于检测区域中至少两个电子可检测标签的存在，以改变至少一个电磁场的强度。

公开(公告)号：AT280986T

公开(公告)日：2004-11-15

申请号：AT02728448

申请日：2002-03-13

Applicant: SENSORMATIC ELECTRONICS CORP

Inventor： WHITEHEAD JAMES T

IPC: G08B13/24

Abstract: The invention concerns a system for detecting multiple tags in a detection zone. The system includes an electronic tag detection system having first and second field generators, each having a respective antenna for generating an electromagnetic field in a detection zone defined between the antennas. Additionally, at least one of the field generators can be responsive to a presence of at least two electronically detectable tags in the detection zone, for varying an intensity of at least one of the electromagnetic fields.

公开(公告)号：CA2441205A1

公开(公告)日：2002-09-19

申请号：CA2441205

申请日：2002-03-13

Applicant: SENSORMATIC ELECTRONICS CORP

Inventor： WHITEHEAD JAMES T

IPC: G08B13/24

Abstract: The invention concerns a system for detecting multiple tags in a detection zone. The system includes an electronic tag detection system having first an d second field generators, each having a respective antenna for generating an electromagnetic field in a detection zone defined between the antennas. Additionally, at least one of the field generators can be responsive to a presence of at least two electronically detectable tags in the detection zon e, for varying an intensity of at least one of the electromagnetic fields.

公开(公告)号：CA2441205C

公开(公告)日：2010-06-08

申请号：CA2441205

申请日：2002-03-13

Applicant: SENSORMATIC ELECTRONICS CORP

Inventor： WHITEHEAD JAMES T

IPC: G08B13/24

Abstract: The invention concerns a system for detecting multiple tags in a detection zone. The system includes an electronic tag detection system having first and second field generators, each having a respective antenna for generating an electromagnetic field in a detection zone defined between the antennas. Additionally, at least one of the field generators can be responsive to a presence of at least two electronically detectable tags in the detection zone, for varying an intensity of at least one of the electromagnetic fields.