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Vehicle navigation system displaying bird-eye view of different visual points and different contraction scale ratios depending upon vehicle travel conditions
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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机译:车辆导航系统根据车辆行驶状况显示不同视点和不同收缩比例的鸟瞰图
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摘要
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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