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Map update data delivery method, map update data delivery device and terminal device

  • US 8,706,693 B2
  • Filed: 01/19/2011
  • Issued: 04/22/2014
  • Est. Priority Date: 01/20/2010
  • Status: Active Grant
First Claim
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1. A map update data delivery method, comprising:

  • storing, in an atomic map updater database of a map update system that updates map data at a terminal, an atomic map updater corresponding to difference update data used to update map data in a specific version to map data in another version for a map element;

    receiving an update data verification request which includes identification information of a map area specified by a user of the terminal and a version of map data;

    searching the atomic map updater database for a base atomic map updater corresponding to difference update data needed to update a map data for a map element in the map area specified by the user;

    generating a first summary information for the base atomic map updater;

    searching the atomic map updater database for a related atomic map updater corresponding to other difference update data with a relation to contents included in the base atomic map updater;

    generating a second summary information for the related atomic map updater;

    transmitting the first summary information for the base atomic map updater and the second summary information for the related atomic map updater to the terminal;

    receiving an update data transmission request for difference update data selected by the user based upon the first summary information and the second summary information transmitted to the terminal; and

    transmitting the difference update data selected by the user to the terminal.

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