Vehicle navigation system displaying bird-eye view of different visual points and different contraction scale ratios depending upon vehicle travel conditions
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United States of America Patent
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-
Mar 24, 1998
Grant Date -
N/A
app pub date -
Apr 11, 1995
filing date -
Apr 15, 1994
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A vehicle navigation system includes: a key board (9) for setting a start point and a destination of a vehicle; a speed sensor (2) for detecting vehicle travel speed; an azimuth sensor (1) for detecting travel direction; a road map data memory (3) for storing road map data related to various roads; a display unit (8); and CPU (4) provided with functions for detecting a current vehicle position (CVP) on the basis of the detected speed and direction after the start point and in accordance with road map data; calculating a recommendable route from the start point to the destination on the basis of the road map data; and forming various birds-eye view road maps. In particular, the birds-eye view road maps of different visual points (E) and different contraction scale ratios can be formed according to vehicle travel speed or according to a distance from the current vehicle position to the nearest specific traffic point (e.g., intersection); that is, various birds-eye view road maps obtained from a suitable visual point and in a suitable contraction scale ratio can be displayed at all times according to the vehicle travel conditions.
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Family
International Classification(s)
Cited Art Landscape
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