NAVIGATION DEVICE AND NAVIGATION METHOD
First Claim
1. A navigation device which provides guidance along a route to a destination, said navigation device comprising:
- a map information obtainment unit configured to obtain map information;
a guiding symbol determination unit configured to generate a guiding symbol for a road corresponding to a guidance route;
an adjacent intersection detection unit configured to calculate a distance between a guidance target intersection and an intersection adjacent to the guidance target intersection by using the obtained map information, the guidance target intersection being an intersection that is targeted by display of the guiding symbol; and
a guidance display control unit configured to determine a timing to start displaying the guiding symbol for the guidance target intersection to be delayed as the calculated distance between the intersections is shorter, and to display the guiding symbol at the determined timing on a windshield or, by superimposing the guiding symbol, on a projected image of a view volume in a traveling direction.
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Accused Products
Abstract
A navigation device and the like capable of preventing a user from falsely recognizing an intersection to take a turn even when another intersection is present near a guidance target intersection. The navigation device that performs route navigation by displaying a guiding symbol superimposed on a photographed image includes: an adjacent intersection detection unit that calculates a distance between a guidance target intersection and an intersection adjacent to the guidance target intersection; and a guidance display control unit that controls guidance details to be displayed. The guidance display control unit sets timing for indicating a path to be taken at the guidance target intersection by using the guiding symbol based on the distance between intersections calculated by the adjacent intersection detection unit.
38 Citations
11 Claims
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1. A navigation device which provides guidance along a route to a destination, said navigation device comprising:
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a map information obtainment unit configured to obtain map information; a guiding symbol determination unit configured to generate a guiding symbol for a road corresponding to a guidance route; an adjacent intersection detection unit configured to calculate a distance between a guidance target intersection and an intersection adjacent to the guidance target intersection by using the obtained map information, the guidance target intersection being an intersection that is targeted by display of the guiding symbol; and a guidance display control unit configured to determine a timing to start displaying the guiding symbol for the guidance target intersection to be delayed as the calculated distance between the intersections is shorter, and to display the guiding symbol at the determined timing on a windshield or, by superimposing the guiding symbol, on a projected image of a view volume in a traveling direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A navigation method used for a navigation device that provides route navigation to a destination, said navigation method comprising:
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obtaining map information; generating a guiding symbol for a road that is a guide route; calculating a distance between a guidance target intersection and an intersection adjacent to the guidance target intersection by using the obtained map information, the guidance target intersection being an intersection that is targeted by display of the guiding symbol; and determining a timing to start displaying the guiding symbol for the guidance target intersection to be delayed as the calculated distance between the intersections is shorter, and displaying the guiding symbol at the determined timing on a windshield or, by superimposing the guiding symbol, on a projected image of a view volume in a traveling direction.
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11. A program used for a navigation device which provides route navigation to a destination, said program causing a computer to execute:
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obtaining map information; generating a guiding symbol for a road that is a guide route; calculating a distance between a guidance target intersection and an intersection adjacent to the guidance target intersection by using the obtained map information, the guidance target intersection being an intersection that is targeted by display of the guiding symbol; and determining a timing to start displaying the guiding symbol for the guidance target intersection to be delayed as the calculated distance between the intersections is shorter, and displaying the guiding symbol at the determined timing on a windshield or, by superimposing the guiding symbol, on a projected image of a view volume in a traveling direction.
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Specification