Apparatus, program, and method for map data update
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United States of America Patent
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Sep 24, 2013
Grant Date -
Jan 28, 2010
app pub date -
Jul 9, 2009
filing date -
Jul 25, 2008
priority date (Note) -
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Abstract
In map data having link information, each of the links has reference information regarding a start point node of the link, a next link in a series of links, and an upper link. Further, links are memorized in a form of link list, and the position of the link in the link list is not changed in the course of adding/deleting a link, thereby enabling a direct reference to each of the links in the link list by the position of the link. The link information organized in the above-described manner enables the ease of the update of the map data as well as the speed-up of the calculation of, for example, a navigation route.
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