发明名称 POSITION INFORMATION DETECTION DEVICE, COMMUNICATION APPARATUS, AND COMMUNICATION SYSTEM
摘要 A position detection device includes a first position obtaining unit obtaining position information by receiving a GPS signal, a second position obtaining unit obtaining position information based on information obtained from a plurality of peripheral base stations, a position information obtainment determining unit determining whether or not the first position obtaining unit obtains position information, a movement detection unit detecting a movement of the first position obtaining unit, a first ON and OFF state control unit controlling ON and OFF states of the first position obtaining unit, a second ON and OFF state control unit controlling ON and OFF states of the second position obtaining unit, a monitor cycle control unit controlling a monitor cycle that the first position obtaining unit obtains position information, and an output unit selecting and outputting one piece of position information obtained by the first position obtaining unit and the second position obtaining unit.
申请公布号 US2012119948(A1) 申请公布日期 2012.05.17
申请号 US201113287766 申请日期 2011.11.02
申请人 发明人 TSUDA SHINICHIRO
分类号 G01S19/46 主分类号 G01S19/46
代理机构 代理人
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