发明授权
- 专利标题： Location aware device
- 专利标题（中）： 位置感知设备
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申请号： US10620272申请日： 2003-07-09
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公开(公告)号： US06977587B2公开(公告)日： 2005-12-20
- 发明人: Salil Pradhan , Chandrakant D. Patel , Mark T. Smith
- 申请人： Salil Pradhan , Chandrakant D. Patel , Mark T. Smith
- 申请人地址： US TX Houston
- 专利权人： Hewlett-Packard Development Company, L.P.
- 当前专利权人： Hewlett-Packard Development Company, L.P.
- 当前专利权人地址： US TX Houston
- 优先权： JP2002-202962 20020711
- 主分类号： G01S5/02
- IPC分类号： G01S5/02 ; G01S13/76 ; G01S13/86 ; G01S19/35 ; G08B1/08 ; G08B1/22
摘要：
A device having a signal module configured to transmit a first type of signal and a second type of signal and to receive the first type of signal and the second type of signal. The device also includes a timer and a controller configured to operate the signal module and timer. The controller is operable to determine a location of the device with respect to another device based upon the time elapsed between transmission and receipt of the first type of signal and transmission and receipt of the second type of signal.
公开/授权文献
- US20040008113A1 Location aware device 公开/授权日：2004-01-15
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