Navigation system displaying forthcoming turns

Details Navigation system displaying forthcoming turns Navigation system displaying forthcoming turns

1995-11-09

1997-08-05

Louis-Jacques, Jacques

Boots, shoes, and leggings

3644492, 3644494, 3644441, 340995, 340988, 73178R, G06G 778

Patent

active

056548923

ABSTRACT:
A vehicle navigation system displays arrow icons to a driver indicating the directions he must follow from each of one or more turning points on his route to keep the driver from passing inadvertently an intersection in which he must change the vehicle's direction of advance or from turning in an intersection prior to the intersection previously chosen for a turn. Road anomalies, such as sharp curves or U turns are also displayed. The arrow icons are alternatively created from computed directions of the vehicle's advance or stored in an X-Y storage unit from which an arrow icon best fitting the required guidance is selected. The stored arrow icons include straight road, single turns, and multiple turns. The selected arrow is displayed to the driver. An embodiment calculates turns and curves with angles which match the actual angles of the turns, and radii and turning angles of curves.

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