Navigation system, and program and storage medium for use in the same
First Claim
1. A navigation system that searches for a route to a destination based on stored map data that provides navigation guidance to the destination along the route, comprising:
- a controller that;
detects either a curve or a greater change in altitude than a predetermined value from a previously traveled road;
stores a location of the detected curve or the detected change in altitude; and
searches for a road that bypasses the location of the detected curve or the detected change in altitude when determining another route.
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Accused Products
Abstract
A navigation system that searches for a route to a destination based on stored map data that provides navigation guidance to the destination along the route, including a controller that searches for a first route to the destination as a route to be recommended based on a calculation of a search cost, detects whether the first route includes a curve, changes the search cost for any detected curve, searches for a second route to the destination based on the search cost that has been changed and employs the second route as the route to be recommended instead of the first route.
23 Citations
17 Claims
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1. A navigation system that searches for a route to a destination based on stored map data that provides navigation guidance to the destination along the route, comprising:
a controller that; detects either a curve or a greater change in altitude than a predetermined value from a previously traveled road; stores a location of the detected curve or the detected change in altitude; and searches for a road that bypasses the location of the detected curve or the detected change in altitude when determining another route. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A storage medium storing a set of program instructions executable on a data processing device and usable to search for a route to a destination based on stored map data and provide navigation guidance to the destination along the route, the program instructions comprising:
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a routine that detects either a curve or a greater change in altitude than the predetermined value from a previously traveled road; a routine that stores a location of the detected curve or the detected change in altitude; and a routine that searches for a road that bypasses the location of the detected curve or the detected change in altitude when determining another route. - View Dependent Claims (9, 10, 11, 12)
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13. A storage medium storing a set of program instructions executable on a data processing device and usable to search for a route to a destination based on stored map data and provide navigation guidance to the destination along the route, wherein the storage medium stores:
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map data used in searching for the route and providing the navigation guidance along the route; and program instructions, comprising; a routine that detects either a curve or a greater change in altitude than a predetermined value from a previously traveled road; a routine that stores a location of the detected curve or the detected change in altitude; and a routine that searches for a road that bypasses the location of the detected curve or the detected change in altitude when determining another route. - View Dependent Claims (14, 15, 16, 17)
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Specification