Navigation device
First Claim
1. A navigation device including:
- a display unit;
a map data input unit for inputting map data, wherein the map data contains information on a plurality of roads with entrances and exits, such as expressways and toll roads; and
a display control unit for displaying the map data inputted from the map data input unit on the display unit, the navigation device comprising;
a road specifying unit for specifying a certain road from the plurality of roads;
a search reference position determining unit for determining a search reference position; and
an entrance list display control unit for sorting entrances to the certain road specified by the road specifying unit in a sequence on a basis of the search reference position determined by the search reference position determining unit and for listing the sorted entrances in the sequence as an entrance list on the display unit.
1 Assignment
0 Petitions
Accused Products
Abstract
Processing for showing entrances to expressways proceeds as follows. A user specifies an expressway and selects a display of entrance list. Then, all the entrances of the specified expressway, located within an L1 (km)-radius circle of a present position are extracted. Driving routes to the respective entrances are computed, and lengths of the respective driving routes are computed. Thereafter, the entrances are sorted in ascending order of the lengths of the respective driving routes, and an entrance list based on the result of this sorting is displayed on a display unit. In the entrance list, the entrances and lengths are listed in pairs in ascending order of the lengths. Further, after a format for storing the entrance is specified from among destination, way point, memory point, and point to be bypassed, processing is performed according to the specified format.
22 Citations
38 Claims
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1. A navigation device including:
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a display unit;
a map data input unit for inputting map data, wherein the map data contains information on a plurality of roads with entrances and exits, such as expressways and toll roads; and
a display control unit for displaying the map data inputted from the map data input unit on the display unit, the navigation device comprising;
a road specifying unit for specifying a certain road from the plurality of roads;
a search reference position determining unit for determining a search reference position; and
an entrance list display control unit for sorting entrances to the certain road specified by the road specifying unit in a sequence on a basis of the search reference position determined by the search reference position determining unit and for listing the sorted entrances in the sequence as an entrance list on the display unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A navigation device including:
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a display unit;
a map data input unit for inputting map data, wherein the map data contains information on a plurality of roads with entrances and exits, such as expressways and toll roads; and
a display control unit for displaying the map data inputted from the map data input unit on the display unit, the navigation device comprising;
a road specifying unit for specifying a certain road from the plurality of roads;
a search reference position determining unit for determining a search reference position; and
an exit list display control unit for sorting exits from the certain road specified by the road specifying unit in a sequence on a basis of the search reference position determined by the search reference position determining unit and for listing the sorted exits in the sequence as an exit list on the display unit. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
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38. A sorting and listing method used in a navigation device that includes:
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a display unit;
a map data input unit for inputting map data, wherein the map data contains information on a plurality of roads with entrances and exits, such as expressways and toll roads; and
a display control unit for displaying the map data inputted from the map data input unit on the display unit, the method comprising steps;
specifying a certain road from the plurality of roads;
determining a search reference position; and
sorting and listing, in the display unit, one set of a first and second sets, wherein the first set includes entrances to the specified certain road and the second set includes exits from the specified certain road, in a sequence on a basis of the determined search reference position.
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Specification