发明授权
US5266948A Apparatus and method for displaying a travel position 失效
用于显示行驶位置的装置和方法

Apparatus and method for displaying a travel position
摘要:
Disclosed is an apparatus for displaying a travel position, which, in carrying out steps of calculating X- and Y-coordinates of a current position of the moving body; renewably presents said current position on a road map indicated on a display screen; matches between a travel trace pattern formed by subsequent current positions and each road pattern on the road map; and puts the travel trace on the mated road pattern for correction of the current position of the moving body deviated from the road on the map, to determine what class of the road the moving body is running on, e.g. mountain road, superhighway or other ordinary road, and also changes the pattern matching condition to be adapted for the class of the road, as determined by a measured number of curves per unit of distance.
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