Navigation system with switching between an ordinary road preferential mode and a tall road preferential mode
First Claim
1. A navigation apparatus for a vehicle which provides route guidance based on a preset route, comprising:
- information storage means in which map information is stored;
present position detection means for detecting the present position of a vehicle;
input means for inputting a start point, a destination and an enroute point and for designating, as a determination mode, an ordinary-road-preferential mode or a toll-road-preferential mode;
route determination means for determining a route based on the map information stored in said information storage means and the determination mode input by said input means, the route starting from the present position of the vehicle detected by said present position detection means or the start point input by said input means and reaching the enroute point or the destination input by said input means; and
control means for providing route guidance based on the route determined by said route determination means, whereinwhen the vehicle has deviated from a route determined in the ordinary-road-preferential mode and starts traveling on a toll road while route guidance is being provided based on the determined route, said route determination means determines a new route to the destination or the enroute point after changing the determination mode from the ordinary-road-preferential mode to the toll-road-preferential mode.
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Accused Products
Abstract
In a navigation apparatus for a vehicle, a route is determined in an ordinary-road-preferential mode or a toll-road-preferential mode, and route guidance is provided based on the thus-determined route. When the vehicle deviates from the determined route, redetermination is conducted so as to obtain a new route based on which guidance is provided. For example, when the vehicle has deviated from a route determined in the ordinary-road-preferential mode in order to enter a toll road, the user operates a toll-road-preference ON touch button so to change the determination mode to the toll-road preferential mode, so that route redetermination is carried out in a state in which priority is given to toll roads. In the navigation apparatus, optimum interchanges of a special road are automatically searched, and a route that preferentially uses the special road is calculated.
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Citations
19 Claims
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1. A navigation apparatus for a vehicle which provides route guidance based on a preset route, comprising:
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information storage means in which map information is stored; present position detection means for detecting the present position of a vehicle; input means for inputting a start point, a destination and an enroute point and for designating, as a determination mode, an ordinary-road-preferential mode or a toll-road-preferential mode; route determination means for determining a route based on the map information stored in said information storage means and the determination mode input by said input means, the route starting from the present position of the vehicle detected by said present position detection means or the start point input by said input means and reaching the enroute point or the destination input by said input means; and control means for providing route guidance based on the route determined by said route determination means, wherein when the vehicle has deviated from a route determined in the ordinary-road-preferential mode and starts traveling on a toll road while route guidance is being provided based on the determined route, said route determination means determines a new route to the destination or the enroute point after changing the determination mode from the ordinary-road-preferential mode to the toll-road-preferential mode.
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2. A navigation apparatus for a vehicle which provides route guidance based on a preset route, comprising:
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information storage means in which map information is stored; present position detection means for detecting the present position of a vehicle; input means for inputting a start point, a destination and an enroute point and for designating, as a determination mode, an ordinary-road-preferential mode or a toll-road-preferential mode; route determination means for determining a route based on the map information stored in said information storage means and the determination mode input by said input means, the route starting from the present position of the vehicle detected by said present position detection means or the start point input by said input means and reaching the enroute point or the destination input by said input means; and control means for providing route guidance based on the route determined by said route determination means, wherein when the vehicle has deviated from a route determined in the toll-road-preferential mode and starts traveling on an ordinary road while route guidance is being provided based on the determined route, said route determination means determines a new route to the destination or the enroute point after changing the determination mode from the toll-road-preferential mode to the ordinary-road-preferential mode. - View Dependent Claims (3)
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4. A navigation apparatus for a vehicle, in which a route is determined in an ordinary-road-preferential mode or a toll-road-preferential mode, and route guidance is provided based on the thus-determined route, said navigation apparatus comprising:
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route redetermination means for redetermining a route in the toll-road-preferential mode or in the ordinary-road preferential mode; and distance calculation means for, when the redetermined route includes a toll road, calculating the distance between the present position of the vehicle and an interchange for entering the toll road, wherein when the distance calculated by said distance calculation means is equal to or greater than a predetermined value, route redetermination is carried out in the ordinary-road-preferential mode.
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5. A navigation apparatus for a vehicle, in which a route is determined in an ordinary-road-preferential mode or a toll-road-preferential mode, route guidance is provided based on the thus-determined route, and when the vehicle travles along a road which is a deviation from the determined route, redetermination is conducted so as to obtain a new route, based on which guidance is provided, said navigation apparatus comprising:
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first route determination means for carrying out route determination in the toll-road-preferential mode; second route determination means for carrying out route determination in the ordinary-road-preferential mode; search cost calculation means for, when the vehicle leaves a toll road during travel along a route determined by said first route determination means and starts traveling along an ordinary road, performing route determination in both the ordinary-road-preferential mode and the toll-road-preferential mode, and calculating search costs of the routes determined in the two modes; and search cost comparison means for comparing the search costs of the two routes calculated by said search cost calculation means, wherein one of the ordinary-road-preferential mode and the toll-road-preferential mode is selected based on the result of the comparison carried out by said search cost comparison means. - View Dependent Claims (6, 7)
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8. A navigation apparatus for a vehicle, in which a route is determined in an ordinary-road-preferential mode or a toll-road-preferential mode, route guidance is provided based on the thus-determined route, and when the vehicle has deviated from the determined route, redetermination is conducted so as to obtain a new route based on which guidance is provided, said navigation apparatus comprising:
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first route determination means for carrying out route determination in the toll-road-preferential mode; second route determination means for carrying out route determination in the ordinary-road-preferential mode; and information collecting means for collecting traffic information, wherein when the vehicle leaves a toll road at an interchange during travel along a route that has been determined by said first route determination means and starts traveling along an ordinary road, responsive to receipt of traffic information pertaining to a location on the toll road ahead of the interchange, route redetermination is carried out in the ordinary-road-preferential mode.
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9. A navigation apparatus for a vehicle, in which a route is determined in an ordinary-road-preferential mode or a toll-road-preferential mode, and route guidance is provided based on the thus-determined route, said navigation apparatus comprising:
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first necessary time calculation means for calculating a time required for travel to a destination when a route determined in the ordinary-road-preferential mode is used; and second necessary time calculation means for calculating a time required for travel to the destination when a route determined in the toll-road-preferential mode is used, wherein when the necessary time for travel of the route determined in the ordinary-road-preferential mode is shorter than a time that is obtained by multiplying the necessary time for travel of the route determined in the toll-road-preferential mode by a predetermined factor, route redetermination is carried out in the ordinary-road-preferential mode so as to obtain a new route.
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10. A navigation apparatus for a vehicle, in which a route is determined in an ordinary-road-preferential mode or a toll-road-preferential mode, and route guidance is provided based on the thus-determined route, said navigation apparatus comprising:
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route determination means for determining a first new route in the toll-road-preferential mode; and ratio calculation means for calculating the ratio of the length of a toll road to the total length of the new route that is determined by the route determination means in the toll-road-preferential mode, wherein when the ratio calculated by said ratio calculation means is equal to or less than a predetermined value, route redetermination is carried out in the ordinary-road-preferential mode so as to obtain a second new route.
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11. A navigation apparatus for a vehicle which provides route guidance based on a preset route, comprising:
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present position detection means for detecting the present position of a vehicle; input means for inputting a start point, a destination and an enroute point; information storage means for storing data including search road data to which weights for route determination are given; interchange search range setting means for setting search ranges that extend from the start point and the destination, respectively, within predetermined angular ranges, based on a positional relationship between the start point and the destination; interchange search means for selecting, from said information storage means, interchanges of a special road located within the interchange search ranges set by said interchange search range setting means; weight changing means for changing the weight of search road data for a segment of the special road defined by the selected interchanges; and route determination means for determining a route based on the search road data as changed by said weight changing means. - View Dependent Claims (12, 13, 14, 15)
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16. A navigation apparatus for a vehicle which provides route guidance based on a preset route, comprising:
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present position detection means for detecting the present position of a vehicle; input means for inputting a start point, a destination and an enroute point; information storage means for storing data including search road data to which weights for route determination are given; interchange search range setting means for setting search ranges that extend from the start point and the destination, respectively, within predetermined angular ranges, based on a positional relationship between the start point and the destination; interchange search means for locating, from the search road data stored in said information storage means, interchanges of a special road located within the interchange search ranges set by said interchange search range setting means; interchange designation means for designating, among the interchanges located by said interchange search means, an optimal interchange for the vehicle to enter the special road after leaving the start point and an optimal interchange for the vehicle to exit the special road so as to reach the destination; and route determination means for determining a route by using the interchanges designated as optimal by the interchange designation means.
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17. A navigation apparatus for a vehicle which provides route guidance based on a preset route, comprising:
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present position detection means for detecting the present position of a vehicle; input means for inputting a start point, a destination and an enroute point; information storage means for storing data including search road data to which weights for route determination are given; interchange search range setting means for setting search ranges that extend from the start point and the destination, respectively, within predetermined angular ranges, based on a positional relationship between the start point and the destination; interchange search area setting means for setting areas included within the interchange search ranges set by said interchange search range setting means; interchange search means for locating, from the search road data stored in said information storage means, interchanges of a special road located within the interchange search areas set by said interchange search area setting means; interchange designation means for designating, among the interchanges located by said interchange search means, an optimal interchange for the vehicle to enter the special road after leaving the start point and an optimal interchange for the vehicle to exit the special road so as to reach the destination; and route determination means for determining a route by using the interchanges designated as optimal by the interchange designation means. - View Dependent Claims (18, 19)
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Specification