A map update system, a navigation device, and a server device is provided. The map update system updates map data of the navigation device based on map data stored by the server device, the map data includes section data corresponding to each section of a navigation map divided into multiple sections and management data designating the section data to be referenced when rendering, the server device receives generation information from the navigation device of map data being currently referenced by the navigation device and creates difference data between map data of a generation corresponding to the received generation information and map data of a newest generation, the navigation device creates updated management data and updated section data by updating management data and section data corresponding to the difference data and writes respectively updated data on different areas that are different from areas on which respective pre-update data area stored.


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    Title :

    Map update system, navigation device, server device, map update method, navigation method, server device control method, and tangible non-transitory computer-readable storage medium containing computer program


    Contributors:

    Publication date :

    2020-01-14


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS / G01C Messen von Entfernungen, Höhen, Neigungen oder Richtungen , MEASURING DISTANCES, LEVELS OR BEARINGS / G06F ELECTRIC DIGITAL DATA PROCESSING , Elektrische digitale Datenverarbeitung



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