Method for determining deviation of a mobile object in a navigation system from a travel route
First Claim
1. A method for determining a deviation of a mobile object from a travel route within a navigation system, wherein the navigation system includes a controller, the method comprising:
- searching a travel route of the mobile object and determining a current location of the mobile object with the controller;
displaying the travel route on a display unit by matching the determined current location of the mobile object with stored map data;
determining the deviation of the mobile object from the travel route with the controller, wherein determining the deviation of the mobile object includes referencing a link situated on the travel route over which the mobile object is traveling, a traveling angle of the mobile object, a deviation from the link situated on the travel route, one or more reference points within a set distance of the current location of the mobile object, and a straight-line distance deviation from the travel route; and
providing a warning if the mobile object has deviated from the travel route.
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Accused Products
Abstract
A travel route stray discriminating method of a mobile object in navigation system is disclosed in which discrimination of travel route deviation is temporarily withheld even if the mobile object has deviated from the travel route on a busy road such as a cross-road, and a warning that the mobile object has deviated from the travel route is issued if it is accurately discriminated that the mobile object has strayed from the travel route. The method comprises: a controller searching for a travel route of a mobile object, discriminating a current location of the mobile object if the mobile object travels along the searched travel route and displaying on a display unit by matching the discriminated current location of the mobile object to a stored map data, and initially discriminating the deviation of the mobile object from the travel route by a link on which the mobile object travels, a travel angle of the mobile object and whether the mobile object has deviated from the link; the controller secondly and thirdly discriminating absence and presence of a guidance subject point based on the travel distance of the mobile object; and the controller controlling a sound signal generating unit and issuing a warning that the mobile object has deviated from travel route if the mobile object is thirdly discriminated to have deviated from the travel route.
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Citations
18 Claims
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1. A method for determining a deviation of a mobile object from a travel route within a navigation system, wherein the navigation system includes a controller, the method comprising:
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searching a travel route of the mobile object and determining a current location of the mobile object with the controller; displaying the travel route on a display unit by matching the determined current location of the mobile object with stored map data; determining the deviation of the mobile object from the travel route with the controller, wherein determining the deviation of the mobile object includes referencing a link situated on the travel route over which the mobile object is traveling, a traveling angle of the mobile object, a deviation from the link situated on the travel route, one or more reference points within a set distance of the current location of the mobile object, and a straight-line distance deviation from the travel route; and providing a warning if the mobile object has deviated from the travel route. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A navigation system configured for determining a deviation of a mobile object from a travel route within the navigation system, wherein the navigation system comprises:
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a controller, the controller being configured to search a travel route of the mobile object and determine a current location of the mobile object with the controller; a database containing stored map data; and a display unit for displaying the travel route, wherein the controller is configured to match the determined current location of the mobile object with the stored map data within the stored map database; wherein the controller is configured to determine the deviation of the mobile object from the travel route, wherein determining the deviation of the mobile object includes referencing a link situated on the travel route over which the mobile object is traveling, a traveling angle of the mobile object, a deviation from the link situated on the travel route, one or more reference points within a set distance of the current location of the mobile object, and a straight line distance deviation from the travel route; and
the controller is configured for providing a warning if the mobile object has deviated from the travel route.
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Specification