JPH06139497A - Navigation device - Google Patents

Abstract

PURPOSE:To provide a more useful navigation device by informing an observer of travelling lane number information. CONSTITUTION:A position of an observer derived by a position measuring part 2 is used in order to derive the travelling direction by a travelling direction calculating part 3, and travelling lane number information of a road conforming to the position and the travelling direction is fetched from a map storage part 1. Subsequently, a map in the periphery of the position derived by the position measuring part 2 and the travelling lane number information are displayed on a map display part 5. A travelling lane number information changing part 6 adds a change to the map displayed by the map display part 5, based on the travelling lane number information fetched from a travelling lane number information fetching part 4. In such a way, the observer can execute driving based on the travelling lane number information.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a navigation device.

[0002]

2. Description of the Related Art A device such as GPS that can measure the position of an observer is used, and map information is stored using a storage medium such as a CD-ROM. Something useful for driving was done.

[0003]

In the conventional navigation device, the main and non-main roads are displayed separately, but the number of lanes on the road is not displayed, and the width of the road is unknown. .

It is an object of the present invention to display the size of a road for more complete navigation.

[0005]

In order to solve such a problem, the present invention has a map storage unit having a combination of road lane number information and a map, and a positioning unit for positioning the observer's position.
A traveling direction calculation unit that calculates the traveling direction of the observer based on the positioning result obtained by the positioning unit, and a traveling result currently obtained according to the positioning result obtained by the positioning unit and the traveling direction obtained by the traveling direction calculation unit. The lane number information extracting unit that extracts the number of lanes for the traveling direction of the road from the map storage unit and the road around the position of the observer obtained by the positioning unit is extracted from the map storage unit and displayed together with the lane number information. Navigation composed of a map display unit and a lane number information changing unit for changing and displaying lane number information of a road on which an observer is displayed, which is displayed by the map display unit, according to the number of lanes obtained by the lane number information extracting unit It is a device.

[0006]

With the above-described structure, the present invention can display the number of lane information on the map.

[0007]

1 is a block diagram of a navigation device according to an embodiment of the present invention. A map storage unit 1 includes place name information, road information, and lane number information. Reference numeral 2 is a positioning unit that measures the position of the observer.
Is used. A traveling direction calculation unit 3 obtains the traveling direction by comparing the previous positioning result and the present positioning result. Reference numeral 4 is a lane number information extraction unit.

During operation, the positioning unit 2 can know the road on which the observer is currently located, and the traveling direction calculation unit 3 allows the observer to move in either the up or down direction (from right to left or left in the drawing). To the right). Further, the number of lanes in the traveling direction is retrieved from the map storage unit 1 depending on the road on which the observer is located and the traveling direction.

Reference numeral 5 denotes a map display unit, which takes out around the position obtained by the positioning unit 2 from the map storage unit 1 and displays it as a map. 6 is a lane number information changing unit, which changes the map displayed by the map display unit 5 based on the lane number information extracted by the lane number information extracting unit 4.

As an example, consider a road as shown in FIG. In this example, one lane for cars traveling from left to right in the drawing,
There are two lanes for cars traveling from right to left in the drawing. FIG. 6 shows the display of the conventional example, but as shown in the figure, the display is the same regardless of the traveling direction. 3A and 3B are display examples in the embodiment of the present invention. Figure 3
As shown in (a) and FIG. 3 (b), the road display is changed depending on the traveling direction.

Next, consider an example including an intersection as shown in FIG. In this example, since the vehicle is turning right, the number of lanes going from the left to the right in the drawing is increased from one lane to two lanes. Further, in this example, as shown in FIG. 5A, the number of lanes information is changed in the middle of the road to show this to the observer. Also in this example, when the traveling direction is opposite to that in FIG. 5 (a), that is, when traveling from right to left in the drawing, the road display is changed as shown in FIG. 5 (b). ing.
Further, the straight direction is regarded as the same direction and the number of lanes in the traveling direction is displayed, but the total number of up and down lanes is displayed in a display format different from the traveling direction with respect to the turning direction.

[0012]

According to the present invention, an excellent navigation device that enables an observer to drive on the basis of lane number information and provides an effective itinerary.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a navigation device according to an embodiment of the present invention.

FIG. 2 is a diagram showing an example of a road for explaining the embodiment.

FIG. 3 is a diagram showing a display example on a navigation device according to an embodiment of the present invention.

FIG. 4 is a diagram showing an example of a road for explaining the embodiment.

FIG. 5 is a diagram showing a display example on a navigation device according to an embodiment of the present invention.

FIG. 6 is a diagram showing a display example in a conventional navigation device.

[Explanation of reference numerals] 1 map storage unit 2 positioning unit 3 traveling direction calculation unit 4 lane number information extraction unit 5 map display unit 6 lane number information change unit

Claims (1)

[Claims] 1. A map storage unit having both road lane number information and a map, a positioning unit for positioning the position of the observer, and a heading direction of the observer calculated from the positioning result obtained by the positioning unit. Lane direction information for extracting from the map storage unit the traveling direction calculation unit, the positioning result obtained by the positioning unit, and the number of lanes for the traveling direction of the road currently traveling in accordance with the traveling direction obtained by the traveling direction calculation unit. With respect to the take-out unit, the road around the position of the observer obtained by the positioning unit, the map display unit taken out and displayed from the map storage unit together with the lane number information, and the number of lanes obtained by the lane number information taking unit According to the navigation device, the lane number information changing unit changes and displays the lane number information of the road on which the observer is displayed, which is displayed by the map display unit.