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ROAD MAP DATA STRUCTURE5 ROAD MAP DATA STORAGE MEDIUM5 NAVIGATION DEVICE5 AND METHOD OF GENERATING ROAD MAP DATA
ROAD MAP DATA STRUCTURE5 ROAD MAP DATA STORAGE MEDIUM5 NAVIGATION DEVICE5 AND METHOD OF GENERATING ROAD MAP DATA
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机译：道路地图数据结构5道路地图数据存储介质5导航设备5和生成道路地图数据的方法
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摘要
A road map data structure includes road network data Rn, representing roads by a connection relation of a plurality of links L, in a hierarchical structure of a plurality of levels, in which, as a link ID for each link L at a lowest level, consecutive serial IDs, according to a connection order of the links within a link line ML formed of a plurality of the consecutive links having a common attribute, are assigned to first links L1 which have a corresponding link existing at a higher level, and a permanent ID, irrelevant with the connection order of the links, is assigned to a second link L2 which does not have a corresponding link existing at a higher level.
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