JP2010223867A - Navigation apparatus and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To display a POI icon of high importance and easily see a map to be displayed in a navigation apparatus having a function for displaying the POI icon for indicating a position of a facility on a screen of the map. <P>SOLUTION: The navigation apparatus includes a storing means 3 for storing map data including the POI icon and data of roads, a reading means 4a for reading the map data from the storing means, a display means 6 for displaying the map in accordance with the map data read by the reading means and a control means 4b for displaying the POI icon on the map displayed by the display means. The control means divides the displayed map by blocks surrounded by the roads and selects the predetermined number of POI icons for each of the blocks and outputs the POI icons to the display means. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a navigation device and a program having a function of displaying an icon on a map.

  In a navigation device, when many POI (Point Of Interest) icons are displayed on the map and it becomes difficult to see the vehicle position and road, each POI icon is given an importance level and only the POI icons with a high importance level are displayed. In order to make the map easier to see, there has been proposed (Patent Document 1). For example, as shown in FIG. 4, when many POI icons 20 are displayed on the road map on which the current position 10 of the vehicle is displayed and it is difficult to see the map, only the POI icons with high importance are displayed. By doing so, it is possible to make the map easier to see by reducing the number of POI icons to be displayed. However, when the importance is assigned, for example, when the importance of the POI close to the current position is increased, the POI icons 20 are concentrated and displayed around the current position 10 of the vehicle as shown in FIG. At the same time, there is a case where nothing is displayed in the outer area.

  As a countermeasure, the display screen is divided into multiple sections, the number of landmarks present in each section is counted, and the partition boundary line and the number of landmarks in the section are displayed overlaid on the map to display normal landmarks. There has also been proposed a display that can be switched between display of the number of landmarks (Patent Document 2).

JP2008-175715 JP 2004-191218 A

  However, since the method of Patent Document 2 is simply a method of dividing the screen into a plurality of frames and displaying the number of landmarks in each divided section on the map, the vehicle position and the like especially when driving on a route. Unnecessary POI icons that are irrelevant are also displayed, and it is not sufficient in that only the POI icons with high importance are displayed and the displayed map is easy to see.

An object of the present invention is to solve the above-described problem, and an object of the present invention is to make a map easy to see by selecting a predetermined number of POI icons and displaying them on a map.
The present invention provides a navigation device having a function of displaying a POI icon indicating the location of a facility on a map screen, storage means for storing map data including POI icons and road data, and reading map data from the storage means. Reading means; display means for displaying a map based on the map data read by the reading means; and control means for displaying a POI icon on the map displayed on the display means. The displayed map is divided into sections surrounded by roads, and a predetermined number of POI icons for each section are selected and output to the display means.
According to another aspect of the present invention, there is provided a program for controlling a navigation device having a function of displaying a POI icon indicating a facility position on a map screen, and reading out map data including POI icons and road data from a storage unit by a reading unit. A step of displaying a map on display means based on the map data read by the reading means, a step of displaying a POI icon on the map displayed on the display means, and the displayed map surrounded by a road It is characterized in that the computer executes a step of selecting a predetermined number of POI icons for each partition and outputting them to the display means.

  The present invention can make the map easy to see by dividing the displayed map into sections surrounded by roads and selecting and displaying a predetermined number of POI icons for each section.

It is a block diagram which shows the example of the navigation apparatus of this embodiment. It is explanatory drawing which divides a map by the division by a road. It is a figure explaining POI icon display of this embodiment. It is a figure explaining the conventional POI icon display. It is a figure explaining the conventional POI icon display.

Hereinafter, this embodiment will be described.
FIG. 1 is a block diagram illustrating a configuration example of a navigation device according to the present embodiment.
Input device 1 composed of a keyboard, mouse, touch panel, operation keys, etc. for inputting information such as destination, retrieval area, facility name to be retrieved, genre, etc., presently composed of GPS (Global Positioning System) for detecting information on the current position Position detection device 2, map data, road data, point data such as facilities, POI icon data, navigation data necessary for route search, display / voice guidance data necessary for route guidance, map display, route An information storage device 3 for storing a program (application and / or OS) for performing guidance such as search and voice guidance, a reading means 4a for reading POI icon data, map data, etc. from the information storage device, and a displayed map A POI icon is displayed above and the displayed map is divided into sections surrounded by roads. Control means 4b for selecting and outputting a predetermined number of POI icons for each section is provided, and as navigator processing means, map display processing, route search processing, display / voice guidance processing necessary for route guidance, and system A central processing unit 4 that performs overall control, a communication device 5 that transmits and receives traffic information, a display that outputs information on route guidance and displays information output from the control means 4b, a speaker, and other output devices 6 are configured. Yes.

  FIG. 2 is a diagram for explaining an example in which the display map is partitioned by road, and FIG. 3 is a diagram showing an example in which a predetermined number of POI icons are displayed for each partition. First, the displayed map is divided into sections surrounded by roads. In the example shown in the figure, the vehicle is divided into six sections, and the case where the current position 10 of the vehicle is on the road 11 dividing the sections is shown. The roads divided into sections are changed according to the scale of the map. For example, a detailed map is divided by a prefectural road, a city road, etc., and a wide area map is divided by a prefectural road, a national road, etc.

  In the present embodiment, a predetermined number of POIs are selected and displayed for each partitioned section. The selection of POIs to be displayed in a limited number for each section takes into account, for example, the importance of the POI. POIs with high importance are, for example, POIs that are close to the current position, for example, within a radius of 500 m, POIs that are located along roads that include roads that divide into sections, and along routes when traveling on a route These are POI located, POI located along the currently running road, POI located on the traveling lane side, POI located forward in the traveling direction, and the like. Further, the importance of POI for each section is, for example, when traveling on a route, the POI located in the traveling direction along the route is high in importance even if it is far from the current position. Even if it is close and along the route, the POI located at the rear of the traveling direction is determined based on its low importance. The importance level may be set according to the user's preference.

  In this way, when the displayed map is divided into sections surrounded by roads and displayed in a predetermined number for each section, there is a high probability that a POI having high importance such as along a road will be selected. Thus, unnecessary POI icons can be prevented from being displayed as in the case where sections are simply separated on the screen. In addition, by determining the number of POI icons to be displayed in each section based on the area ratio of the sections displayed on the screen instead of the area ratio of the actual sections, the section having a larger area displayed on the screen, Many POI icons are displayed, and as shown in FIG. 3, the POI icons are uniformly displayed on the entire screen without providing the POI icons in a concentrated manner around the current position of the vehicle, thereby providing an easy-to-see map. Can do.

DESCRIPTION OF SYMBOLS 1 ... Input device, 2 ... Current position detection device, 3 ... Information storage device, 4a ... Reading means, 4b ... Control means, 4 ... Central processing unit, 5 ... Communication device, 6 ... Output device.

Claims (4)

In a navigation device having a function of displaying a POI icon indicating the location of a facility on a map screen,
Storage means for storing map data including POI icons and road data;
Reading means for reading map data from the storage means;
Display means for displaying a map based on the map data read by the reading means;
Control means for displaying a POI icon on the map displayed on the display means,
The navigation device, wherein the control means divides the displayed map into sections surrounded by roads, selects a predetermined number of POI icons for each section, and outputs them to the display means. The navigation device according to claim 1, wherein the control means determines the number of POI icons displayed in each section based on an area ratio of each section displayed on the display means. The navigation device according to claim 1, wherein the control unit changes a road dividing the section according to a scale of a map displayed on the display unit. In a program for controlling a navigation device having a function of displaying a POI icon indicating the location of a facility on a map screen,
A step of reading map data including POI icons and road data from the storage means by the reading means;
Displaying a map on the display means based on the map data read by the reading means;
Displaying a POI icon on the map displayed on the display means;
Dividing the displayed map into sections surrounded by roads, selecting a predetermined number of POI icons for each section and outputting them to the display means;
A program that causes a computer to execute.

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