Map display apparatus for vehicle
First Claim
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1. A map display apparatus for a vehicle, the apparatus comprising:
- a road map data storage device configured to store road map data;
a display device configured to display a road map using the road map data;
a guide route designation unit configured to designate a guide route from a departure point to a destination based on the road map data;
an input device configured to input a transit time period based on an operation of a user;
a reachable point calculation unit configured to calculate a reachable point on the guide route, the reachable point which the vehicle is estimated to reach when the transit time period elapses after the vehicle starts from the departure point; and
a display control unit configured to cause the display device to display a road map with a first reduction scale having a covering range including the departure point and the reachable point and then to display a road map with a second reduction scale having a covering range including the reachable point, the covering range of the second reduction scale being narrower than the covering range of the first reduction scale.
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Abstract
A transit time period from a departure point is inputted. A first road map is once displayed to have a broad covering range to include the departure point and an estimated reachable point, which the vehicle reaches after the transit time period elapses. Then, a second road map having a covering range narrower than that of the first road map is displayed to include only the estimated reachable point without including the departure point. This allows the user to easily recognize the positional relationship between the estimated reachable point and the departure point, and an approximate position of the estimated reachable point against the guide route.
13 Citations
12 Claims
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1. A map display apparatus for a vehicle, the apparatus comprising:
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a road map data storage device configured to store road map data; a display device configured to display a road map using the road map data; a guide route designation unit configured to designate a guide route from a departure point to a destination based on the road map data; an input device configured to input a transit time period based on an operation of a user; a reachable point calculation unit configured to calculate a reachable point on the guide route, the reachable point which the vehicle is estimated to reach when the transit time period elapses after the vehicle starts from the departure point; and a display control unit configured to cause the display device to display a road map with a first reduction scale having a covering range including the departure point and the reachable point and then to display a road map with a second reduction scale having a covering range including the reachable point, the covering range of the second reduction scale being narrower than the covering range of the first reduction scale. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification