The present invention relates to an apparatus for enlarging and reducing a displayed portion (150) of an image, comprising: a storage means for storing a plurality of image data layers having different scale ratios, each of the plurality of image data layers corresponding to a single map; a display means (3) for displaying a portion (150) of the map; a pointing means (6, 12, 31, 32) for accepting a user's operation; a scale setting means (143) for identifying a desired degree of scale reduction/enlargement of said portion (150) of the map based on said accepted user's operation; and an arithmetic processing means (120, 81) for retrieving one of the image data layers from memory based upon the setting of the scale setting means (143) to provide a corresponding enlargement or reduction in scale of the portion (150) of the map displayed, by providing the retrieved image data layer to the display means (3). The present invention further relates to a digital map display zooming method.


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    Title :

    Digital map display zooming method and device


    Additional title:

    Verfahren und Vorrichtung zum Zoom der Anzeige digitaler Karten
    Méthode et dispositif de zoom d'affichage de cartes numériques


    Contributors:

    Publication date :

    2016-08-17


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    G01C Messen von Entfernungen, Höhen, Neigungen oder Richtungen , MEASURING DISTANCES, LEVELS OR BEARINGS / G06T Bilddatenverarbeitung oder Bilddatenerzeugung allgemein , IMAGE DATA PROCESSING OR GENERATION, IN GENERAL / G09G Anordnungen oder Schaltungen zur Steuerung oder Regelung von Anzeigevorrichtungen mit statischen Mitteln zur Darstellung veränderlicher Informationen , ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION / G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS / G09B Unterrichts- oder Vorführungsgeräte , EDUCATIONAL OR DEMONSTRATION APPLIANCES / G06F ELECTRIC DIGITAL DATA PROCESSING , Elektrische digitale Datenverarbeitung



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