发明名称 METHOD AND APPARATUS FOR SENDING PRESENCE MESSAGES
摘要 <p>An intentional presence system (30') in accordance with the present invention includes a transmitting device (40) at a first physical location that is responsive to a command (42) intentionally initiated by a first individual at the first physical location to develop a presence signal (42) intended for a second individual at a second physical location. The intentional presence system (30') further includes a receiving device (40) located at the second physical location which is receptive to the presence signal (42) and which is operative to generate an indication (38) to the second individual of the first individual's presence with respect to the transmitting device.</p>
申请公布号 WO1999019854(A1) 申请公布日期 1999.04.22
申请号 US1998021372 申请日期 1998.10.09
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