To reduce a data communication volume between a vehicle onboard terminal and a map updating server while a temporary road change occurs.SOLUTION: A server determines change management information (status) when there is a road change (Yes in S11) (S12), and returns a confirmation result on the basis of change management information when update data is requested to be confirmed from a car navigator (Yes in S31) (S32), the car navigator executing a map data updating process in accordance with the confirmation result from the server (Yes in S22) (S23). Thus, when map data that has been saved before a temporary road construction is determined, after the road construction, to be the same as before, the map data is restored to be used, so that it is possible to control data communication between a car navigator 1 and a server 2 and reduce a data communication volume between the car navigator 1 and the server 2.SELECTED DRAWING: Figure 2

    【課題】一時的な道路変化を生じる状態において、車載端末と地図更新サーバとの間のデータ通信量の削減を図る。【解決手段】サーバは、道路変化があった場合は(S11:YES)変化管理情報(ステータス)を決定し(S12)、カーナビから更新データを確認要求された場合は(S31:YES)変化管理情報に基づいて確認結果を応答し(S32)、カーナビは、サーバからの確認結果に応じて(S22:YES)地図データ更新処理を実行する(S23)。これにより、一時的な道路工事が終了することで道路工事前と同一の地図データと判断された場合は道路工事前に退避した退避地図データを復帰して利用するようになるので、工事終了後におけるカーナビ1とサーバ2との間のデータ通信を抑制でき、カーナビ1とサーバ2との間のデータ通信量を削減することができる。【選択図】図2


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    Title :

    MAP UPDATING SYSTEM, MAP UPDATING SERVER, AND VEHICLE ONBOARD TERMINAL


    Additional title:

    地図更新システム、地図更新サーバ及び車載端末


    Contributors:

    Publication date :

    2020-03-26


    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 / G09B Unterrichts- oder Vorführungsgeräte , EDUCATIONAL OR DEMONSTRATION APPLIANCES



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