Original document(14 pages) Authorized document(15 pages) 中文版
    A mobile phone with position counting function. To extend the areas where a mobile handset can determine its position using radio waves, the present invention provides a mobile handset that is equipped with both position calculation means using radio waves from GPS satellites and position calculation means using RF carriers from cellular base stations. Positioning results obtained from both of these position calculation means are combined and weighted with GPS positioning reliability and cellular positioning reliability, respectively. A weighted mean of these results is then output as a final position calculation result.
Application Number
申请号
02107578 Application Date
申请日
2002.03.18
Title 名称 Mobile phone with position counting function
Publication Number
公开号
1375999 Publication Date
公开日
2002.10.23
Approval Pub. Date 2004.10.20 Granted Pub. Date 2004.10.20
International Classification 分类号 G01S5/10;G01S5/14;H04B7/26;H04Q7/20
Applicant(s) Name
申请人
Hitachi, Ltd.
Address 地址
Inventor(s) Name 发明人 Tsunehara Katsuhiko;Kuwahara Keno
Attorney & Agent 代理人 han hong
More information 更  多  信  息


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