发明名称 |
Method and apparatus for indicating the location of an object |
摘要 |
A method of indicating the location of a relatively mobile object, comprising the steps of: (a) generating a first signal that is characteristic of a first, relatively immobile object; (b) transmitting the first signal from the first relatively immobile object; (c) detecting the first signal at a receiver; (d) generating a second signal that is characteristic of a second, relatively immobile object; (e) transmitting the second signal from the second, relatively immobile object; (f) detecting the second signal at a receiver; (g) generating a third signal that is characteristic of the relatively immobile object; (h) detecting the third signal at a receiver; (i) operating a processing device operatively connected to the receiver using signal time-of-flight (t-o-f) data and/or received signal strength information (RSSI) to establish the distance of the relatively mobile object respectively from the first and second relatively immobile objects; and (j) generating a signal indicating whether the relatively mobile object is for the time being closer to the first or the second relatively immobile object as the case may be.
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申请公布号 |
US7577444(B2) |
申请公布日期 |
2009.08.18 |
申请号 |
US20040575580 |
申请日期 |
2004.10.12 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS N.V. |
发明人 |
BIRD NEIL C;SIMONS PAUL R. |
分类号 |
H04W24/00;G01S5/02;G01S13/87 |
主分类号 |
H04W24/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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