Data processing: vehicles – navigation – and relative location – Navigation – Employing position determining equipment
Patent
1996-05-28
1999-07-20
Louis-Jacques, Jacques H.
Data processing: vehicles, navigation, and relative location
Navigation
Employing position determining equipment
701208, 340995, 340990, 342451, 342452, 345441, G01C 2100, G06G 778
Patent
active
059250917
ABSTRACT:
In a vehicle navigation method and apparatus for drawing a map in which the scale of a displayed map is reduced to display a second wide-area map, an image of a presently-traveled road is drawn on the display so it is superimposed on the wide-area map, even if the wide-area map otherwise does not show the presently-traveled road. When the scale of the presently displayed map is reduced to instead display the wide-area map, a determination is made as to whether the presently-traveled road is displayed. If the presently-traveled road is not displayed, an image of the presently-traveled road is generated from map information pertaining to the presently-traveled road and the image is displayed so it is superimposed on the wide-area map.
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Alpine Electronics Inc.
Louis-Jacques Jacques H.
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