Vehicle navigation apparatus
First Claim
1. A vehicle navigation apparatus provided in a vehicle, comprising:
- a map data storage unit for storing map data;
a display unit to display at least a vehicle current position and a map around the vehicle current position using the map data stored in the map data storage unit;
a position data measurement unit for measuring data on the vehicle current position;
a travel locus calculation unit for calculating a travel locus of the vehicle based on the data on the vehicle current position measured by the position data measurement unit;
a map matching processing unit for performing a map matching processing by comparing a shape of each road in the map data stored in the map data storage unit with a shape of the travel locus calculated by the travel locus calculation unit and estimating a travel road where the vehicle is traveling;
a display control unit for displaying a vehicle mark indicating the vehicle current position and the map around the vehicle current position on the display unit such that the vehicle current position exists on the travel road estimated by the map matching processing unit;
a stop area setting unit for setting a stop area in an arbitrary area in the map data; and
a stop unit for, when the vehicle current position stands in the stop area set by the stop area setting unit, stopping the map matching processing performed by the map matching processing unit.
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Accused Products
Abstract
A stop area is set in an arbitrary area where map matching processing is to be stopped, by an operation switch group or a remote controller. When a vehicle enters the stop area, the map matching processing is stopped, and when the vehicle exits from the stop area, the map matching processing is performed. It is supposed that a situation where the map matching processing should be performed has changed to a situation where the map matching processing should be stopped or vice versa. Here, since the stop area can be set in advance, it is not necessary to perform any selection operation. Thus, load on a driver during driving the vehicle can be reduced.
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Citations
11 Claims
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1. A vehicle navigation apparatus provided in a vehicle, comprising:
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a map data storage unit for storing map data;
a display unit to display at least a vehicle current position and a map around the vehicle current position using the map data stored in the map data storage unit;
a position data measurement unit for measuring data on the vehicle current position;
a travel locus calculation unit for calculating a travel locus of the vehicle based on the data on the vehicle current position measured by the position data measurement unit;
a map matching processing unit for performing a map matching processing by comparing a shape of each road in the map data stored in the map data storage unit with a shape of the travel locus calculated by the travel locus calculation unit and estimating a travel road where the vehicle is traveling;
a display control unit for displaying a vehicle mark indicating the vehicle current position and the map around the vehicle current position on the display unit such that the vehicle current position exists on the travel road estimated by the map matching processing unit;
a stop area setting unit for setting a stop area in an arbitrary area in the map data; and
a stop unit for, when the vehicle current position stands in the stop area set by the stop area setting unit, stopping the map matching processing performed by the map matching processing unit. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A vehicle navigation apparatus provided in a vehicle, comprising:
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a map data storage unit for storing map data;
a display unit to display at least a vehicle current position and a map around the vehicle current position using the map data stored in the map data storage unit;
a position data measurement unit for measuring data on the vehicle current position;
a travel locus calculation unit for calculating a travel locus of the vehicle based on the data on the vehicle current position measured by the position data measurement unit;
a map matching processing unit for performing a map matching processing by comparing a shape of each road in the map data stored in the map data storage unit with a shape of the travel locus calculated by the travel locus calculation unit and estimating a travel road where the vehicle is traveling;
a display control unit for displaying a vehicle mark indicating the vehicle current position and the map around the vehicle current position on the display unit such that the vehicle current position exists on the travel road estimated by the map matching processing unit;
an execution area setting unit for setting an execution area in an arbitrary area in the map data; and
an enable unit for, when the vehicle current position stands in the execution area set by the execution area setting unit, enabling the map matching processing performed by the map matching processing unit. - View Dependent Claims (8, 9)
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10. A switching method for stopping a map matching processing used in a navigation apparatus provided in a vehicle, the navigation apparatus including:
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a map data storage unit for storing map data;
a display unit to display at least a vehicle current position and a map around the vehicle current position using the map data stored in the map data storage unit;
a position data measurement unit for measuring data on the vehicle current position;
a travel locus calculation unit for calculating a travel locus of the vehicle based on the data on the vehicle current position measured by the position data measurement unit;
a map matching processing unit for performing the map matching processing by comparing a shape of each road in the map data stored in the map data storage unit with a shape of the travel locus calculated by the travel locus calculation unit and estimating a travel road where the vehicle is traveling; and
a display control unit for displaying a vehicle mark indicating the vehicle current position and the map around the vehicle current position on the display unit such that the vehicle current position exists on the travel road estimated by the map matching processing unit, the switching method comprising steps of;
setting a stop area in an arbitrary area in the map data; and
stopping the map matching processing performed by the map matching processing unit when the vehicle current position stands in the set stop area.
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11. A switching method for enabling a map matching processing used in a navigation apparatus provided in a vehicle, the navigation apparatus including:
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a map data storage unit for storing map data;
a display unit to display at least a vehicle current position and a map around the vehicle current position using the map data stored in the map data storage unit;
a position data measurement unit for measuring data on the vehicle current position current position;
a travel locus calculation unit for calculating a travel locus of the vehicle based on the data on the vehicle current position measured by the position data measurement unit;
a map matching processing unit for performing the map matching processing by comparing a shape of each road in the map data stored in the map data storage unit with a shape of the travel locus calculated by the travel locus calculation unit and estimating a travel road where the vehicle is traveling; and
a display control unit for displaying a vehicle mark indicating the vehicle current position and the map around the vehicle current position on the display unit such that the vehicle current position exists on the travel road estimated by the map matching processing unit, the switching method comprising steps of;
setting an execution area in an arbitrary area in the map data; and
enabling the map matching processing performed by the map matching processing unit when the vehicle current position stands in the set execution area.
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Specification