Navigation system for vehicles
First Claim
1. A navigation system for a vehicle providing route guidance to an input destination, along a route set in advance, comprising:
- present position detecting means for detecting the present position of the vehicle;
a memory containing stored road data inclusive of flagged data for unopened roads;
search means for searching said stored road data, exclusive of said flagged data, to set the route;
road status update means for determining if a road flagged unopened is currently open and for removing the flag from said flagged data if said road is determined to be currently open.
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Abstract
Lane change guidance information is output based on data for the next guide intersection on a route calculated in advance and on detection of the driving lane in which the vehicle is currently driven. The system includes present position detection, direction of advance determination for guide intersections along the preset route, driving lane determination, and guidance information output for instructing the driver when direction to be taken at a guide intersection does not match the current driving lane, whereby adequate guidance information is provided the driver regarding lane changes when the vehicle is driven on a road having two or more lanes.
78 Citations
4 Claims
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1. A navigation system for a vehicle providing route guidance to an input destination, along a route set in advance, comprising:
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present position detecting means for detecting the present position of the vehicle; a memory containing stored road data inclusive of flagged data for unopened roads; search means for searching said stored road data, exclusive of said flagged data, to set the route; road status update means for determining if a road flagged unopened is currently open and for removing the flag from said flagged data if said road is determined to be currently open. - View Dependent Claims (2, 3)
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4. A navigation system for displaying a road map, comprising:
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a memory for storing road data, for generating the display of the road map, inclusive of data for opened roads data and data for unopened roads; and control means for reading out the road data from the memory and for drawing the road map displaying opened roads and unopened roads, with the opened roads displayed in a different form than the display form of the unopened roads.
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Specification