发明名称 Proximity detection using wireless connectivity in a communications system
摘要 The present invention is directed towards a primary device that detects the proximity of additional remote devices, which are intended to be within the same local network. The primary device communicates with the remote devices using wireless communication. In the event that the remote devices are outside of a predetermined range, the remote devices are disabled.
申请公布号 US2004068744(A1) 申请公布日期 2004.04.08
申请号 US20030676968 申请日期 2003.10.01
申请人 CLAUSSEN PAUL J.;NAIR AJITH N.;RUSS SAMUEL H. 发明人 CLAUSSEN PAUL J.;NAIR AJITH N.;RUSS SAMUEL H.
分类号 G08B13/14;H04L29/06;H04N5/00;H04N5/44;H04N5/445;H04N7/16;H04N7/173;H04N7/24;(IPC1-7):H04N17/02;H04N17/00;H04N7/18 主分类号 G08B13/14
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