PROBLEM TO BE SOLVED: To perform route guidance based on map data of the latest version while reducing communication traffic volume.SOLUTION: An information distribution device comprises: a route retrieval unit 351 for retrieving a first route to a destination using map data of the latest version and retrieving a second route to the destination using the same map data as map data installed in a navigation device 100; a determination unit 352 for determining whether or not there is difference between the first route and the second route; a factor specification unit 353 for, if it is determined that there is difference between the routes, specifying a factor in generation of the difference between the routes for each section of the first route in which the difference is generated; and an information generation unit 354 for, on the basis of the factor specified by the factor specification unit 353, determining whether or not it is a target factor to which shortage information for guiding that becomes short when generating a guide screen for guiding a route in the navigation device 100 is distributed, and if it is determined to be the target factor to which the shortage information for guiding is distributed, generating shortage information for guiding corresponding to a section in which difference is generated due to the determined factor in a guide route.SELECTED DRAWING: Figure 1

    【課題】通信量を削減しつつ、最新バージョンの地図データに基づく経路案内を行う。【解決手段】最新バージョンの地図データを用いて目的地までの第1ルートを探索し、ナビゲーション装置100にインストールされた地図データと同じ地図データを用いて目的地までの第2ルートを探索する経路探索部351と、第1ルートと第2ルートとに差異があるか否かを判定する判定部352と、ルートに差異があると判定された場合に、差異が生じた第1ルートの区間ごとに、ルートの差異が生じた要因を特定する要因特定部353と、要因特定部353により特定された要因に基づいて、ナビゲーション装置100においてルートを案内する案内画面を生成する際に不足する案内用不足情報を配信する対象となる要因であるか否かを判定し、案内用不足情報を配信する対象となる要因であると判定した場合に、判定した要因により誘導経路に差異が生じた区間に対応する案内用不足情報を生成する情報生成部354とを備える。【選択図】図1


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    Title :

    INFORMATION DISTRIBUTION DEVICE AND INFORMATION DISTRIBUTION METHOD


    Additional title:

    情報配信装置及び情報配信方法


    Contributors:

    Publication date :

    2017-01-26


    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



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