JPH11281386A - Navigation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a navigation device for enabling a user to easily confirming an advancing direction at the intersection of each enlarged map even when the enlarged maps of a plurality of intersections are shown. SOLUTION: A navigation device is provided with a means for displaying a road map that indicates a position and displays each enlarged map near the intersection at the map display means (S14) when a position shown on a road map is located near a plurality of continuous intersections (S4). The device is provided with a means for detecting the number of enlarged maps to be displayed on the map display means (S6), a means for determining a size for displaying the enlarged map on the map display means (S8), a means for comparing the determined size with a specific size (S10), and a means (S22) for displaying a figure for indicating an advancing direction on the map display means instead of the enlarged map when the determined size is smaller according to the comparison result (S12).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of an on-vehicle type navigation device for displaying a road map showing the position of a vehicle on a display.

[0002]

2. Description of the Related Art In recent years, an on-vehicle navigation device which detects a position of a vehicle and displays a road map indicating the position on a display as image display means has been widely used. Such a navigation device position detection method includes a GPS positioning method in which a GPS receiver measures the position using radio waves from a GPS (Global Positioning System) satellite, and a running trajectory based on the distance and direction in which the vehicle has moved. There is a map matching method for detecting a position, and the like. Currently, a hybrid method of calculating a current position on a road network by a map matching method based on an absolute position of a vehicle measured by a GPS positioning method is mainly adopted.

Some navigation devices are provided with route setting means for setting a traveling route from a departure point and a destination point input by a user through operation means. Japanese Patent Application Laid-Open No. 9-5101 discloses an image display means. Is located near a plurality of continuous intersections where the traveling direction should be changed on the traveling route set by the route setting means, the enlarged map near each of the intersections is displayed on the image display means. Discloses a navigation device that simultaneously displays the information. However, this publication does not describe in what state and how the enlarged maps are arranged and displayed on the image display means.

[0004]

In the navigation apparatus described in the above-mentioned publication, when an enlarged map near two intersections is simultaneously displayed on a display near a continuous intersection, if the number of enlarged maps is large, Each of the enlarged maps becomes smaller, and it may be difficult for the user to confirm the traveling direction at the intersection of each enlarged map. The present invention has been made in view of the above circumstances, and when an enlarged map of a plurality of intersections is displayed on a screen, it is easy for a user to confirm the traveling direction at the intersection of each enlarged map. It is an object to provide a navigation device.

[0005]

According to a first aspect of the present invention, there is provided a navigation device comprising: a position detecting means for detecting a position; and a map display means for displaying a road map showing the position obtained from the position detecting means. When the position indicated on the road map displayed by the map display means is near a plurality of continuous intersections, in a navigation device that displays an enlarged map near each of the intersections on the map display means, Means for detecting the number of enlarged maps to be displayed, means for determining the size of the enlarged map to be displayed on the map display means in accordance with the number detected by the means, and the size determined by the means. Means for comparing with a predetermined size, and when the size determined by the means is smaller, a graphic indicating a traveling direction instead of the enlarged map is displayed on the map display means. Characterized in that it comprises a display means for displaying.

In this navigation device, the position detecting means detects the position, and the map display means displays a road map showing the detected position. When the position indicated on the road map displayed by the map display means is near a plurality of continuous intersections, an enlarged map near each of the intersections is displayed on the map display means. The detecting means detects the number of enlarged maps to be displayed on the map display means, and the determining means determines the size of the enlarged map to be displayed on the map display means according to the detected number. The means of comparison is
The determined size is compared with a predetermined size, and the comparing means determines that the determined size is smaller.
The display means displays a graphic indicating the traveling direction on the map display means instead of the enlarged map. Thus, even when an enlarged map of a plurality of intersections is displayed on the screen, the user can easily confirm the traveling direction at the intersection of each enlarged map.

A navigation device according to a second aspect of the present invention is characterized in that the display means adds an intersection name of the enlarged map to the figure.

In this navigation device, the position detecting means detects the position, and the map display means displays a road map showing the detected position. When the position indicated on the road map displayed by the map display means is near a plurality of continuous intersections, an enlarged map near each of the intersections is displayed on the map display means. The detecting means detects the number of enlarged maps to be displayed on the map display means, and the determining means determines the size of the enlarged map to be displayed on the map display means according to the detected number. The means of comparison is
The determined size is compared with a predetermined size, and when the determined size is smaller, the display means displays a graphic indicating the traveling direction on the map display means instead of the enlarged map, and displays the traveling direction. Are added to the intersection name of the enlarged map. Thus, even when an enlarged map of a plurality of intersections is displayed on the screen, the user can determine the intersection of each enlarged map, and can easily confirm the traveling direction at the intersection of each enlarged map.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings showing the embodiments. Embodiment 1 FIG. FIG. 1 is a block diagram showing a configuration of an embodiment of a navigation device according to the present invention. This navigation device uses a GP
Based on the absolute position of the vehicle measured by the GPS positioning method measured by the S receiver, the current position is detected on a road network by a map matching method that detects the current position from a traveling locus based on the distance and direction in which the vehicle has moved. And a control means 11 for the user to perform input operations such as setting input and data input.

This navigation device also stores a route setting storage means 13 for setting and storing a traveling route from a departure point and a destination point inputted from the operation means 11, and also stores map data and traffic regulation data such as one-way traffic. CD to do
A data storage means 14 such as a ROM, and a data storage means 1
Buildings and other landmarks stored in 4 (landmarks)
A voice output unit 16 such as a speaker for outputting voice data for guiding the vehicle, and an enlarged map around one or a plurality of continuous intersections where the traveling direction should be changed on the traveling route set by the route setting storage unit 13 are created. And an enlarged map creating means 17.

The navigation device also displays a road map showing the current position based on the map data stored in the data storage means 14, the traffic regulation data, and the current position of the mounted vehicle calculated by the positioning means 15. The image display means (map display means) 18 which is a display for displaying the enlarged map created by the enlarged map creation means 17 and the display size according to the number of the enlarged maps to be displayed by the image display means 18 are set in advance. In order to set a predetermined threshold value of the display size of the enlarged map to be displayed on the image display means 18 instead of the enlarged map near the intersection, the arrow (graphic) indicating the traveling direction is set in advance. Initial value setting means 12
And a CPU 10 for exchanging data with each of the above-described units, performing predetermined arithmetic processing as needed, and controlling each unit to perform its function.

Hereinafter, the operation of the navigation device having such a configuration will be described with reference to the flowchart of FIG. In this navigation device, a route setting storage unit 13 sets and stores a traveling route based on a departure point and a destination point input from the operation unit 11. When the mounted vehicle approaches an intersection where the traveling direction should be changed while traveling on the traveling route set and stored by the route setting storage means 13 (S2), the CPU 10 sets and stores the information in the route setting storage means 13. The driving route
A search is made to determine whether another intersection whose traveling direction should be changed exists within a predetermined distance of the intersection (S4). However, if there is another intersection that should not change the traveling direction, it is excluded from the search target.

If there is no other intersection to change the traveling direction within a predetermined distance of the intersection to change the traveling direction (S4), the CPU 10 creates an enlarged map of the one intersection in the enlarged map creating means 17. (S18), FIG.
As shown in (2), it is displayed on the image display means 18 together with the intersection name (S20). When there is another intersection to change the traveling direction within a predetermined distance of the intersection to change the traveling direction (S4), the CPU 10 determines whether the intersection (the enlarged map) includes the intersection to change the traveling direction. The number is counted (detected) (S6).

The CPU 10 acquires the display size of the enlarged map corresponding to the counted number (S6) from the initial value setting means 12 (S8). The CPU 10 displays the acquired display size and the display size of the enlarged map, which is set in advance in the initial value setting means 12 and in which the arrow indicating the traveling direction is displayed on the image display means 18 instead of the enlarged map near the intersection. (S10), and the initial value setting means 12
(S8) If the displayed size is larger (S12), it causes the enlarged map creating means 17 to create an enlarged map near each intersection with the display size, and displays the image together with the intersection name as shown in FIG. Displayed on the means 18 (S1
4).

If the display size acquired from the initial value setting means 12 (S8) is smaller, the CPU 10 proceeds to (S1).
2) The enlarged map creating means 17 creates an arrow diagram indicating the traveling direction of each intersection based on the display size, and displays it on the image display means 18 together with each intersection name as shown in FIG. 4 (S14). The CPU 10 displays an enlarged map near the intersection or an arrow diagram indicating the traveling direction of each intersection on the image display unit 1.
8 (S14, S20, S22), an arrow indicating the traveling direction is displayed at the current position of the road map displayed on the image display means 18, as shown in FIG. 3 or FIG.
6) Return.

[0016]

According to the navigation apparatus of the first invention, even when an enlarged map of a plurality of intersections is displayed on the screen, the user can easily confirm the traveling direction at the intersection of each enlarged map.

According to the navigation apparatus of the second aspect, even when an enlarged map of a plurality of intersections is displayed on the screen, the user can determine the intersection of each enlarged map, and can determine the traveling direction at each intersection of each enlarged map. It is easy to confirm.

[Brief description of the drawings]

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

FIG. 2 is a flowchart showing an operation of the embodiment of the navigation device according to the present invention.

FIG. 3 is an explanatory diagram for describing a screen operation of the embodiment of the navigation device according to the present invention.

FIG. 4 is an explanatory diagram for describing a screen operation of the embodiment of the navigation device according to the present invention.

[Explanation of symbols]

Reference Signs List 10 CPU (display means, detecting means, comparing means) 11 operating means 12 initial value setting means (determining means) 14 data storing means 15 positioning means (position detecting means) 17 enlarged map creating means 18 image displaying means (map Display means, display)

Claims (2)

[Claims] 1. A vehicle comprising: a position detecting means for detecting a position; and a map display means for displaying a road map showing a position obtained from the position detecting means, wherein the map display means displays a road map. When the position is near a plurality of continuous intersections, in a navigation device that displays an enlarged map near each of the intersections on the map display means, a means for detecting the number of enlarged maps to be displayed on the map display means, Means for determining the size of the enlarged map to be displayed on the map display means in accordance with the number detected by the means, means for comparing the size determined by the means with a predetermined size, Display means for displaying, on the map display means, a graphic indicating a traveling direction in place of the enlarged map when the determined size is smaller. Deployment apparatus. 2. The navigation device according to claim 1, wherein the display unit adds an intersection name of the enlarged map to the graphic.