Vehicle navigation system and method
First Claim
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1. An onboard vehicle navigation system comprising:
- a map data storage unit for storing a road as a set of links, wherein each link has an associated traveling direction;
a guidance request reception unit for receiving a predetermined return route guidance request operation of a user;
a return route calculation unit for automatically calculating a route from a present vehicle position in a present traveling lane of a road on a present traveling path, corresponding to a road link having a first traveling direction, to a position in an opposite lane of the road, corresponding to a road link having a second traveling direction opposite to that of the first traveling direction, as a return guide route when said guidance request reception unit receives the predetermined return route guidance request operation; and
a return route guidance unit for guiding the user according to the return guide route calculated by said return route calculation unit.
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Abstract
Route guidance is provided for traveling to a lane opposite to a present traveling lane. If a user operates a return button, a main control unit calculates a position closest to a present position in a lane of the traveling direction opposite to that of a present traveling lane on a present traveling path as a destination, and sets the destination to destination data. Then, the route search unit searches for a guide route to the destination indicated by the destination data. A navigation image indicating the searched guide route along with the present position and the destination is displayed.
15 Citations
21 Claims
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1. An onboard vehicle navigation system comprising:
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a map data storage unit for storing a road as a set of links, wherein each link has an associated traveling direction; a guidance request reception unit for receiving a predetermined return route guidance request operation of a user; a return route calculation unit for automatically calculating a route from a present vehicle position in a present traveling lane of a road on a present traveling path, corresponding to a road link having a first traveling direction, to a position in an opposite lane of the road, corresponding to a road link having a second traveling direction opposite to that of the first traveling direction, as a return guide route when said guidance request reception unit receives the predetermined return route guidance request operation; and a return route guidance unit for guiding the user according to the return guide route calculated by said return route calculation unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of operating an onboard vehicle navigation system, comprising:
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storing a road as a set of links, wherein each link has an associated traveling direction; receiving a predetermined return route guidance request operation of a user; automatically calculating a route from a present vehicle position in a present traveling lane of a road on a present traveling path, corresponding to a road link having a first traveling direction, to a position in an opposite lane of the road, corresponding to a road link having a second traveling direction opposite to that of the first traveling direction, as a return guide route when the predetermined return route guidance request operation is received; and guiding the user according to said return guide route. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A computer program read and executed by an onboard vehicle navigation system, wherein said computer program is caused to execute:
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storing a road as a set of links, wherein each link has an associated traveling direction; receiving a predetermined return route guidance request operation of a user; automatically calculating a route from a present vehicle position in a present traveling lane of a road on a present traveling path, corresponding to a road link having a first traveling direction, to a position in an opposite lane of the road, corresponding to a road link having a second traveling direction opposite to that of the first traveling direction, as a return guide route when the predetermined return route guidance request operation is received; and guiding the user according to said return guide route. - View Dependent Claims (17, 18)
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19. A recording medium for storing a computer program read and executed by an onboard vehicle navigation system, wherein said computer program causes said navigation system to execute:
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a step of storing a road as a set of links, wherein each link has an associated traveling direction; a step of receiving a predetermined return route guidance request operation of a user; a step of automatically calculating a route from a present vehicle position in a present traveling lane of a road on a present traveling path, corresponding to a road link having a first traveling direction, to a position in an opposite lane of the road, corresponding to a road link having a second traveling direction opposite to that of the first traveling direction, as a return guide route when the predetermined return route guidance request operation is received; and a step of guiding the user according to said return guide route. - View Dependent Claims (20, 21)
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Specification