发明名称 Location measurement process for radio-frequency badges
摘要 A process for determining the location of entities carrying transmitters (TXs) that transmit TX ID messages to at least one receiver (RX) connected to a computer, in a network of computers. Each RX sends data messages to its associated computer which includes an identifier identifying the TX transmitting the TX ID message, the signal strength of the received TX ID message, and a RX identifier. Each RX computer generates badge hit messages from each data message, and provides them to a centralized computer of the network. The centralized computer generates a badge hit table having a separate entry for each badge hit message, which has fields including the information received in the badge hit message and a hit time indicating the time the entry was added to the table. The badge hit table data is used to determining the location of the TXs, and so the entities.
申请公布号 US2005270170(A1) 申请公布日期 2005.12.08
申请号 US20050186479 申请日期 2005.07.20
申请人 MICROSOFT CORPORATION 发明人 KRUMM JOHN;SMITH GREGORY;BRUMITT BARRETT L.;HARRIS STEPHEN
分类号 G01S19/03;G06K7/00;(IPC1-7):G08B5/22 主分类号 G01S19/03
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