PROBLEM TO BE SOLVED: To provide a technology of guiding a user to a communicable area even when the user gets lost and moves to a non-communicable area.SOLUTION: A portable telephone terminal 10 is used which can communicate with a portable telephone network 30 and can receive radio waves from a GPS satellite 40. When a radio wave intensity measurement timing comes and the radio wave intensity becomes a predetermined value or lower, information related to the existing position of the portable telephone terminal 10 is recorded in time sequence. When a position search operation or a non-communicable area display operation is performed, a part or the whole of the information related to the existing position of the portable telephone terminal 10 is displayed on a display unit 104 included in the portable telephone terminal 10.SELECTED DRAWING: Figure 1

    【課題】ユーザが道に迷い、通信不可エリアへ移動してしまった場合であっても通信可能エリアへユーザを誘導する技術を提供することにある。【解決手段】携帯電話網30との通信及び、GPS衛星40の電波を受信可能な携帯電話端末10を使用し、電波強度計測タイミングとなり、電波強度が予め定められた値以下になったならば、携帯電話端末10が存在していた位置に係る情報を時系列的に記録し、位置探索操作または通信不可エリア表示操作をしたならば、携帯電話端末10が存在していた位置に係る情報の一部または全てを携帯電話端末10が備える表示部104に表示する。【選択図】 図1


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    Title :

    PORTABLE TELEPHONE TERMINAL HAVING COMMUNICABLE AREA RECORDING FUNCTION


    Additional title:

    通信可能エリア記録機能を有する携帯電話端末


    Contributors:

    Publication date :

    2016-08-04


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    G01C Messen von Entfernungen, Höhen, Neigungen oder Richtungen , MEASURING DISTANCES, LEVELS OR BEARINGS / G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS / H04M TELEPHONIC COMMUNICATION , Fernsprechverkehr



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