发明名称 Human feedback using parasitic power harvesting of RFID tags
摘要 The present invention is directed toward secure access systems. Specifically, a radio frequency (RF) enabled device is provided that includes an RF powered human feedback element. An interrogator emitting an RF field may control the human feedback element through the RF field such that information may be transmitted from the interrogator to the device.
申请公布号 US7586413(B2) 申请公布日期 2009.09.08
申请号 US20060464739 申请日期 2006.08.15
申请人 ASSA ABLOY AB 发明人 DAVIS MICHAEL L.
分类号 G08B13/14 主分类号 G08B13/14
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