发明申请
- 专利标题: Eas Reader Detecting Eas Function From Rfid Device
- 专利标题(中): 读取器检测来自Rfid器件的功能
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申请号: US11791092申请日: 2005-11-18
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公开(公告)号: US20080180248A1公开(公告)日: 2008-07-31
- 发明人: Ming-Ren Lian , Gary Mark Shafer
- 申请人: Ming-Ren Lian , Gary Mark Shafer
- 申请人地址: US FL Boca Raton
- 专利权人: Sensormatic Electronics Corporation
- 当前专利权人: Sensormatic Electronics Corporation
- 当前专利权人地址: US FL Boca Raton
- 国际申请: PCT/US05/41680 WO 20051118
- 主分类号: G08B13/14
- IPC分类号: G08B13/14
摘要:
A reader device for electronic article surveillance (EAS) is disclosed which includes an exciter; a transmitter, the transmitter operatively coupled to the exciter via a first signal gate; a transmitter antenna operatively coupled to the transmitter; a receiver antenna operatively coupled to a receiver front end; and a signal detector, the receiver front end operatively coupled to the signal detector via a second signal gate, wherein the exciter generates a burst of electromagnetic energy in a pulse or a continuous wave at an operating frequency of a radiofrequency identification (RFID) tag within a read range of the EAS reader such that the energy level of the burst generates a residual or ring-down signal from the RFID tag indicating the presence of the RFID tag without activating the RED functions of the tag. The ring-down signal is read by the EAS reader as an EAS function.
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