JP2008139082A - Map display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a map display device capable of preventing oversight of a facility of a retrieval result. <P>SOLUTION: If facility retrieval is performed while a detailed map is displayed on a display screen of a display monitor 16, sections 31a-31c of the retrieved facility are overlaid and displayed on the detailed map 30 of achromatic color. The sections 31a-31c of the facility are displayed by the same color, and by the color including chromatic color such as red or blue. Icons and facility names of the facilities other than the retrieved facility are displayed on the detailed map 30 of achromatic color, but these are also displayed by achromatic color. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a map display device that displays a searched facility on a map in an identifiable manner.

A vehicle-mounted navigation device that displays an icon on a map superimposed on the searched facility location is known as a conventional technique (for example, Patent Document 1).
JP 2005-148019 A

  In a conventional in-vehicle navigation device such as Patent Document 1, the icon displayed at the location of the facility is confused with the display color of the map, the characters displayed on the map, etc. As a result, the facility of the search result is overlooked. There is a problem that.

(1) The map table device of the invention of claim 1 includes a map data storage means for storing map data (hereinafter referred to as map data) displayed on the display screen, and facility data displayed on the display screen ( Hereinafter, facility data storage means for storing facility data), search means for searching for facility data with reference to the facility data storage means, and information on the facility data searched by the search means is highlighted from the road map. And highlighting means.
(2) The invention of claim 2 is the map display device according to claim 1, wherein the emphasizing means displays the facility data information retrieved by the retrieving means in a chromatic color, and other map data in achromatic color. It is characterized by displaying.
(3) According to a third aspect of the present invention, in the map display device according to the second aspect, the highlighting means displays the information of a plurality of facility data searched by the searching means in the same chromatic color. .
(4) According to a fourth aspect of the present invention, in the map display device according to the second or third aspect, the highlighting means does not display character information included in the map data displayed in an achromatic color.
(5) The invention of claim 5 is the map display device according to claim 1, wherein the map data displayed on the display means together with the information on the facility data searched by the search means is displayed after being compressed or thinned out. And
(6) The invention of claim 6 is provided with cursor display control means for displaying a cursor on a display monitor, and when the cursor overlaps the facility searched by the search means, detailed information on the overlapped facility is displayed. And

  According to the present invention, the information on the retrieved facility data is highlighted from the road map and displayed. Therefore, it is possible to prevent oversight of the facility of the search result.

  FIG. 1 shows a navigation device 1 according to an embodiment of the present invention. The navigation device 1 can display an achromatic (monotone) road map in addition to a road map including a normal chromatic color. The navigation device 1 includes a control circuit 11, ROM 12, RAM 13, current location detection device 14, image memory 15, display monitor 16, speaker 17, input device 18, and disk drive 19. The disc drive 19 is loaded with a DVD-ROM 110 in which map data is stored.

  The control circuit 11 includes a microprocessor and its peripheral circuits, and performs various controls by executing a control program stored in the ROM 12 using the RAM 13 as a work area. When the control circuit 11 performs a predetermined route search process based on the map data stored in the DVD-ROM 110, the processing result is displayed on the display monitor 16 as a recommended route.

  The current location detection device 14 is a device that detects the current location of the vehicle. The current location detection device 14 includes a vibration gyro 14a, a vehicle speed sensor 14b, a GPS (Global Positioning System) sensor 14c, and the like. The vibration gyro 14a detects the traveling direction of the vehicle, the vehicle speed sensor 14b detects the vehicle speed, and the GPS sensor 14c detects a GPS signal from a GPS satellite. The navigation device 1 determines the display range of the road map, the route search start point, and the like based on the current location of the vehicle detected by the current location detection device 14 and also displays the current location (own vehicle position mark) on the road map. indicate.

  The image memory 15 stores image data to be displayed on the display monitor 16. The image data includes road map drawing data and various graphic data, which are appropriately generated based on the map data stored in the DVD-ROM 110. The navigation device 1 can perform map display and the like by using the image data generated in this way.

  The disk drive 19 reads map data from the DVD-ROM 110. The map data includes map display data, route search data, and the like. The map display data and the route search data include road link information and node information stored in the map data. The map display data has map data of a plurality of scales from wide areas to details, and the scale of the display map can be changed according to a user request. The map data may be read from a recording medium other than the DVD-ROM 110, such as a CD-ROM or a hard disk.

  The map display data includes chromatic color map display data and achromatic color map display data. The chromatic color map data is used when a road color map having a chromatic color is displayed in a known manner. The achromatic color map display data is used when an achromatic road map is displayed, and is mainly used when a facility search result is displayed on a road map. The chromatic color map display data and the achromatic color map display data have the same data structure except for the display color of the road map.

  The map data further includes facility data (facility data) displayed on the road map. The facility data includes detailed information such as the location, name, type, and address and business hours of various facilities. In addition, when the facility is displayed on the detailed map, information on the shape and position of the facility section is included in the facility data so that the section of the facility can be displayed in a color including a chromatic color.

  The control circuit 11 searches for facility data based on the search condition input by the input device 18. The search result of the facility search is displayed on a road map in addition to being displayed as a list. Details of the search results displayed on the road map will be described later.

  Based on various information such as map data, the display monitor 16 provides the user with various information such as a road map near the vehicle position and the search result as a screen display. The speaker 17 outputs sound for instructing the user to perform various input operations and for guiding the route. The input device 18 has operation keys for the user to set various commands and input search conditions, and is realized by a button switch on the operation panel, a hard switch around the panel, or the like. The user manually sets the destination by manually operating the input device 18 in accordance with an instruction on the display screen of the display monitor 16 or a voice instruction from the speaker 17.

  When the destination is set by the user, the navigation device 1 performs a route calculation from the current location detected by the current location detection device 14 to the destination based on a predetermined algorithm. The route thus obtained (hereinafter referred to as a recommended route) is displayed on the screen in a manner different from other roads by changing the display form, for example, the display color. Thereby, the user can recognize the recommended route on the road map on the screen. In addition, the navigation device 1 instructs the user in the direction of travel using a screen or voice so that the vehicle can travel according to the recommended route, thereby guiding the route of the vehicle.

  Next, the display of the search result of the facility search in the embodiment of the present invention will be described with reference to FIGS. Here, the navigation device 1 will be described as having searched for “hotel”.

  FIG. 2 is a diagram in which the facility search result is displayed in chromatic color on the wide area map 20 drawn in achromatic color on the display screen of the display monitor 16. The searched facility “hotel” is displayed at the location of the facility as icons 21 a to 21 d on the achromatic wide area map 20. The icons 21a to 21b are displayed in the same color, and are displayed in colors including chromatic colors such as red and blue. The achromatic color wide area map 20 displays icons and facility names of facilities other than the searched facilities, and these are also displayed in achromatic colors. Although the own vehicle position mark 22 is displayed on the achromatic wide area map 20, the own vehicle position mark is displayed in the same color as when the normal wide area map is displayed. By scrolling the achromatic color wide area map 20, it is possible to display the search result facilities not displayed on the display screen on the display screen.

  FIG. 3 is a diagram for explaining the display of the search result of the facility search when the detailed map is displayed on the display screen of the display monitor 16. In the detailed map 30, the searched facility “hotel” is displayed so as to overlap the achromatic detailed map 30. Since the facility map is displayed on the detailed map 30, the searched facility is not displayed as an icon but is displayed as the facility partitions 31a to 31c. The facility sections 31a to 31c are displayed in the same color, and are displayed in colors including chromatic colors such as red and blue. Similar to the achromatic color wide-area map 20, the achromatic color detailed map 30 also displays icons and facility names of facilities other than the searched facility, and these are also displayed in achromatic color. Even when the own vehicle position mark 32 is displayed on the achromatic detailed map 30, the own vehicle position mark is displayed in the same color as when the detailed map of a known mode is displayed. By scrolling the achromatic detailed map 30, the search result facility that is not displayed on the display screen can be displayed on the display screen.

  Next, search result display processing on a map in the embodiment of the present invention will be described with reference to the flowchart of FIG. The processing in FIG. 4 is executed in the control circuit 11 by a program that starts when the facility search is completed.

  In step S401, the achromatic color map display data stored in the DVD-ROM 110 is read by the disk drive 19. The range of the map data to be read is the same as the chromatic map display data read before the facility search. In step S402, the facility data as a search result is read from the facility data stored in the DVD-ROM 110 by the disk drive 19.

  In step S403, it is determined whether the scale of the map is equal to or greater than a predetermined value, that is, whether the scale of the searched facility is displayed. If the map scale ratio is greater than or equal to the predetermined value, an affirmative determination is made in step S403 and the process proceeds to step S404. If the map scale ratio is less than the predetermined value, a negative determination is made in step S403, and the process proceeds to step S407. In step S404, the section of the facility of the search result is drawn in a color including a chromatic color so as to be superimposed on the achromatic map. In step S405, the image data generated by drawing the facility of the search result is stored in the image memory 15. In step S406, image data is read from the image memory 15, and a map displaying the search result facilities is displayed on the display monitor 16.

  In step S407, the facility icon as a search result is drawn in a color including a chromatic color so as to overlap the achromatic map. Then, the process proceeds to step S405.

The navigation device 1 according to the above-described embodiment of the present invention has the following operational effects.
(1) The wide-area map 20 and the detailed map 30 are displayed in achromatic colors, and the search result facilities 21a to 21d and 31a to 31c are displayed in colors including chromatic colors. If the chromatic color is displayed in the achromatic color, the chromatic color is very conspicuous, and the user does not overlook the facilities 21a to 21d and 31a to 31c in the search results.

(2) Since the facilities 21a to 21d and 31a to 31c of the plurality of search results displayed on the achromatic maps 20 and 30 are displayed in the same color, see the facility icons 21a to 21d and the icons 31a to 31c. You can see that it is a hotel. On the other hand, when the facility icons 21a to 21d and the icons 31a to 31c are displayed in different colors, it may be mistaken that the facility is a different facility even though the hotel is searched.

The above embodiment can be modified as follows.
(1) When displaying the facility of the search result on the map, the achromatic color wide-area map 20 and the detailed map 30 are used. As shown in FIG. 5, the achromatic color map 30, that is, the searched facility is displayed. Characters such as facility names and road names that exist outside the indicated area may not be displayed. The search facilities 31a to 31c displayed on the map 30 are clarified, and the facilities 31a to 31c as the search results are not overlooked.

(2) As shown in FIG. 6, when the cursor 61 displayed on the display screen is superimposed on the facility 31b as a search result, detailed information 62 about the facility may be displayed. In this case, when the position of the cursor matches the display position of the facility as a search result within a predetermined range, the facility data stored in the DVD-ROM 110 is read and displayed on the display monitor 16. It is convenient because you can know the detailed information of the facility searched by a simple operation.

(3) When the facility of the search result is displayed on the map, the facility search is performed within a predetermined range from the vehicle position (around the vehicle position) or within the range of the map displayed on the display monitor 16. Also good. It is useless to search for facilities that are not displayed on the map.

(4) The search result is highlighted by displaying the icon of the facility as the search result in chromatic color and displaying the background road map in achromatic color. However, the present invention is not limited to the embodiment as long as the search result can be highlighted. For example, when displaying the icon of the searched facility, the search result may be emphasized by thinning out or compressing the background road map. FIG. 7 shows an example in which the narrow streets of the road map in the background of FIG. 2 are thinned out.

  The map display device is not limited to the navigation device 1. For example, a portable information terminal may be used.

  The above description is merely an example, and the present invention is not limited to the above embodiment.

The correspondence between the elements of the claims and the embodiments will be described.
The map data storage means and facility data storage means of the present invention correspond to the DVD-ROM 110, and the search means corresponds to the control circuit 11, the disk drive 19 and the DVD-ROM 110. The highlighting display means and the cursor display control means correspond to the control circuit 11. In addition, the above description is an example to the last, and when interpreting invention, it is not limited to the correspondence of the component of said embodiment and the component of this invention at all.

It is a block diagram which shows the structure of the navigation apparatus by one Embodiment of this invention. It is a figure for demonstrating the display of the search result of a facility search when a wide area map is displayed on the display screen of a display monitor. It is a figure for demonstrating the display of the search result of a facility search when a detailed map is displayed on the display screen of a display monitor. It is a flowchart for demonstrating the search result display process in one Embodiment of this invention. It is a figure for demonstrating the display of the search result of a facility search when not displaying a character on an achromatic map. It is a figure for demonstrating the display of the detailed information of a facility by superimposing the cursor displayed on the display screen on the facility of a search result. It is a figure for demonstrating the display of the search result of the facility search at the time of thinning out the narrow street of a background road map.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Navigation apparatus 11 Control circuit 15 Image memory 16 Display monitor 18 Input apparatus 19 Disk drive 20 Wide area map 21a-21d, 31a-31c Hotel 22 Own vehicle position mark 30 Detailed map 61 Cursor 62 Detailed information 110 of facilities DVD-ROM

Claims (6)

Map data storage means for storing map data (hereinafter referred to as map data) displayed on the display screen;
Facility data storage means for storing facility data (hereinafter referred to as facility data) displayed on the display screen;
Search means for searching the facility data with reference to the facility data storage means;
A map display device comprising: highlighting means for highlighting and displaying information of the facility data searched by the search means from the road map. The map display device according to claim 1,
The map display device characterized in that the highlighting means displays the information of the facility data searched by the searching means in a chromatic color and displays other map data in an achromatic color. The map display device according to claim 2,
The map display device, wherein the highlighting means displays information of a plurality of facility data searched by the searching means in the same chromatic color. The map display device according to claim 2 or 3,
2. The map display device according to claim 1, wherein the highlighting unit does not display character information included in the map data displayed in achromatic color. The map display device according to claim 1,
The map display device, wherein the map data displayed on the display means together with the information on the facility data searched by the search means is displayed after being compressed or thinned out. The map display device according to any one of claims 1 to 5,
Cursor display control means for displaying a cursor on the display monitor,
When the cursor is over the facility searched by the search means, detailed information on the overlapped facility is displayed.

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