发明名称 RF wireless device including an infrared beacon for presence detection
摘要 A portable RF wireless device (41), such as a microphone, is provided with an infrared beacon in order to signal a connection request to a wireless communication access point (48) using a first IR code (401). In response to this first IR code, the wireless communication access point broadcasts an RF inquiry message (101) that is responded (102) to by the portable RF wireless device in order to establish an RF communication link. After the RF communication link is established, the portable RF wireless device conditionally transmits a second IR code to verify that it is still collocated in the local vicinity of the wireless communication access point, such as being in the same room.
申请公布号 US8254838(B2) 申请公布日期 2012.08.28
申请号 US20090466854 申请日期 2009.05.15
申请人 FELDSTEIN GEORGE;CRESTRON ELECTRONICS INC. 发明人 FELDSTEIN GEORGE
分类号 H04B7/00 主分类号 H04B7/00
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