JPH09292262A - Circumferential facility retrieval display method and destination setting method for guide route - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make clear positional relation between circumferential facilities and a retrieval base point by indicating the retieval base point and the genru of facilities to be retrieved by a user, retrieving the facilities of an indicated genre existing in the retrieval range centering around the retrieval base point, and displaying a map image in which the whole retrieved facilities are received in the picture plane by a contraction scale. SOLUTION: When a user indicates a circumferential facility retrieval mode, a map image centering around the present position of a vehicle is displayed on a picture plane. When a cursor 21 is moved to a desired position and a circumferential facility retrieving button is pushed, a retrieval menu in which the cursor position is set as a retrieval base point is displayed. When the user selects a desired genre and pushes the button, facilities existing within a fixed distance centering around the retrieval base point are retrieved and displayed. When the user pushes the button of a desired facility, the facility is recognized as the destination of a guide route, and when a map button is pushed, the map image is displayed in a size so that all the facilities centering around the base point are received in the picture plane. Next when the user pushes an enlarging button 29, the vicinity of the facilty of the cursor 21 is enlarged.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of displaying a search result of a peripheral facility search, which is one of the functions of an on-vehicle navigation device, and a method of setting a destination of a guide route using the peripheral facility search.

[0002]

2. Description of the Related Art A vehicle-mounted navigation device includes a map data storage device such as a CD-ROM or an IC card recording map data, a display device such as a liquid crystal display device, and the like.
It has a vehicle movement detection device such as a gyro, a GPS (Global Positioning System), and a vehicle speed sensor that detects the current position and current direction of the vehicle, and reads map data including the current position of the vehicle from the map data storage device. A map image around the vehicle position is displayed on the display screen based on the map data, and a vehicle position mark (location) is displayed on the map image so that the map image can be scrolled according to the movement of the vehicle. By fixing the map image on the screen and moving the vehicle position mark, it is possible to see at a glance where the vehicle is currently traveling.

[0003] Normally, a navigation system for a vehicle is provided with a route guidance function that enables a driver to easily travel to a desired destination without making a mistake on a road. According to this route guidance function, the route with the lowest cost that connects the starting point to the destination is automatically searched by using the map data by performing a simulation calculation such as the horizontal search method or the Dijkstra method, and the searched route is guided. It is stored as route data, and the guide route is displayed on the screen by changing the color from other roads and drawing it thicker on the map image, or within a certain distance to the intersection where the vehicle should change the route on the guide route. By drawing an arrow indicating the route at the intersection on the map image when approaching, the driver can easily understand the optimum route to the destination.

The cost is based on the distance and is multiplied by a constant according to the road width and road type (general road or highway). Therefore, even if there are two routes with the same distance, the cost is different depending on whether the driver uses the toll road, whether the distance is prioritized or the time is prioritized. Becomes CD-
Map data stored in a map data storage device such as a ROM is divided into latitude and longitude widths of an appropriate size according to the scale level such as 1/12500, 1/25000, 1/50000 and 1/100000. Roads and the like are stored as a coordinate set of vertices (nodes) represented by longitude and latitude. A road is formed by connecting two or more nodes, and a part connecting two nodes is called a link. Further, the map data includes (1) road list, node table, intersection constituent node list, intersection netlist, map matching, road layer for route search, (2) road, architecture, facility, park on the map screen. And a background layer for displaying rivers, etc. (3) Administrative division names such as municipal names, road names, intersection names, characters such as building names, and character / symbol layers for displaying map symbols, etc. ing.

Further, in recent years, a CD-ROM has a parking lot,
There are data that stores data related to facilities such as convenience stores, hospitals, and various stores classified by genre, and such a CD-ROM is used in the navigation device.
For example, if the user selects a convenience store as the genre using the ROM, a convenience store near the current position of the vehicle is searched, and a guidance route from the current position of the vehicle to the nearest convenience store is searched for and guidance is provided. Some have a peripheral facility search function that guides the vehicle along the route.

10 to 13 are diagrams (screen display examples) showing a conventional peripheral facility search method and a guide route destination setting method using the search result in this type of navigation device. In the following example, it is assumed that a touch panel is attached on the display screen, and the user can give an instruction to the navigation device body by touching a button displayed on the screen.

First, when the user specifies the peripheral facility search mode while the navigation device is powered on or when the vehicle is moving along the guide route, as shown in FIG. 10, the vehicle is displayed on the screen. A map image centered on the current position is displayed. The user scrolls the screen as necessary, aligns the cursor 21 with a desired search base point, and presses the peripheral facility search button 22 displayed on the screen.

Then, the navigation device is shown in FIG.
As shown in 1, a peripheral facility selection menu is displayed on the screen. In this case, a button 23 displaying eight genres and up and down arrow buttons 24 and 25 are drawn on the screen, and when the up and down arrow buttons 24 and 25 are pressed, the next eight genres are displayed. The user selects a desired genre from a plurality of genres displayed on the display screen and presses the button 23 of the genre. Here, it is assumed that the convenience store is selected as the genre of the facility to be searched.

As a result, the navigation device is a CD
Search for a convenience store within a certain range from the search base point using the data recorded in the ROM. Then, as shown in FIG. 12, the list is displayed on the display in order from the convenience store closest to the search base point. In this case, the cursor (thick frame) 26 is displayed at the center of the screen (3
Th) Convenience store position. Further, the distance (straight line distance) from the search base point is displayed on the right side of the convenience store name.

Here, when the user moves the cursor 26 to a desired convenience store using the up and down buttons 24 and 25 and then presses the map button 27 displayed on the screen, as shown in FIG. A map image centering on the convenience store designated by the cursor 26 is displayed on the screen. While the map image is being displayed in this way, the destination setting button 2 displayed on the screen by the user is displayed.
When 8 is pressed, the designated convenience store is set as the destination for route guidance. After that, the car navigation device searches for the route with the lowest cost from the current position of the vehicle to the destination. Then, the route obtained from the search result is set as the guide route, and the vehicle is guided along the guide route.

[0011]

However, conventionally, although the distance between the search base point and each facility searched can be known on the list display screen of FIG. 12, the positional relationship between the search base point and each facility is not clear. There is. That is, conventionally, since it is not known whether the searched facility is in front of or in the rear of the vehicle traveling direction, the facility located behind in the traveling direction must be selected, and the peripheral facility search needs to be performed again. Sometimes. In addition, when a peripheral facility search is performed while the vehicle is moving along the guide route to the final destination, it is not known which facility is on the guide route to the final destination, so It may be a waste of time because you are off the guide route to go to the surrounding facilities.

[0012] From the above, an object of the present invention is to provide a peripheral facility search and display method that enables the positional relationship between the peripheral facility and the search base point to be seen at a glance, and a method for setting a destination of a guide route that can save time waste. is there.

[0013]

[Means for Solving the Problems] In the above-mentioned problem, in a method of searching and displaying peripheral facilities by a vehicle-mounted navigation device, when a user specifies a search base point and a genre of a facility to be searched, a search centering on the search base point is performed. This is solved by a peripheral facility search and display method characterized in that a facility of a designated genre existing in the range is searched and a map image is displayed at a scale in which the search base point and all the searched facilities are included in one screen. .

The above-mentioned problem is centered on the search base point when the user specifies the search base point and the genre of the facility to be searched in the method of setting the destination of the guide route to the peripheral facility by the vehicle-mounted navigation device. A facility of a specified genre existing in the search range is searched, a map image is displayed at a scale in which the search base point and all the searched peripheral facilities are included in one screen, and the map image display screen and the map image are displayed. When a user selects a specific facility on either the enlarged display screen or the list display screen of searched facilities, the selected facility is set as the destination for the guided route search, which is the destination of the guided route. Solve by setting method.

In the present invention, after searching the facilities around the search base point, the map image is displayed at a scale in which the search base point and all the searched facilities are displayed on one screen. Therefore, the user searches the search base point. The positional relationship with each facility can be understood at a glance. Further, in the present invention, since the positional relationship between the search base point and each searched facility is clarified in this way, it is possible to easily determine, for example, whether the facility is ahead or behind in the vehicle traveling direction, It is possible to set facilities along the route as destinations (stops) and save time wasted before reaching the final destination.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a block diagram showing the configuration of a vehicle-mounted navigation device. In the figure,
Reference numeral 11 is a CD-R that stores map data composed of road layers, background layers, character / symbol layers, etc. for each scale.
OM and 12 are vehicle movement detection units such as a GPS receiver for detecting a vehicle position, a vehicle direction, and a vehicle speed by satellite navigation, and a gyro and a vehicle speed sensor. Reference numeral 13 denotes an operation unit for a user to give various instructions to a navigation device body described later, and the operation unit 13 is composed of, for example, a touch panel attached to a display device 15 described later, a wireless remote controller, or the like. A display device 15 displays a map image and the like.

Reference numeral 10 denotes a navigation device body. The navigation device body 10 includes a CPU (microcomputer) 1 for executing various calculations and a CD-ROM 1
1, an interface unit 2 connected to the vehicle position detection unit 12 and the operation unit 13, a program ROM (read only memory) 3 storing programs for realizing various functions as a navigation device, and a CD-ROM 1
1 for storing map data read out from the CPU 1 and data necessary for arithmetic processing in the CPU 1, a frame buffer 5 for storing image frames to be displayed on the display device 15, and an image to be displayed on the display device 15. And a DAC (digital / analog converter) 7 for converting the digital video signal output from the color palette 6 into an NTSC signal. Reference numeral 9 denotes a bus for transmitting signals, and the CPU 1, the interface unit 2,
Various signals are transmitted between the program ROM 3, the main memory 4, the frame buffer 5, and the like.

2 to 7 are diagrams (screen display examples) showing a peripheral facility search and display method and a destination setting method according to the embodiment of the present invention. 8 and 9 are flowcharts showing a peripheral facility search display method and a destination setting method. In the following description, a case of operating via a touch panel attached to the display device 15 will be described, but the same operation can be performed using a remote controller.

First, when the user specifies the peripheral facility search mode while the navigation device is powered on or is moving along the guide route toward the final destination, as shown in FIG. 2, the display screen is displayed. A map image centering on the current position of the vehicle is displayed on the top (step 1
01, 102). At this time, the cursor 21 is at the current position of the vehicle. The user operates the operation unit 13 as necessary to scroll the map image and move the cursor 21 to a desired position, and then a peripheral facility search button 22 on the screen.
Press. As a result, the CPU 1 registers the cursor position in the memory 4 as the search base point (step 103).

After that, the navigation device displays the search menu on the display screen as shown in FIG. 3 (step 104). In this search menu, a button 23 displaying, for example, eight genres and up and down arrow buttons 24 and 25 are drawn on one screen, and when the up and down arrow buttons 24 and 25 are pressed, the next eight genres are displayed. .
Next, when the user selects a desired genre and presses the button 23 of that genre (step 105), the CPU 1 causes C
The data of the facility of the genre is read from the D-ROM 11 and stored in the memory 4. Then, the CPU 1 sets, for example, the search range to a range having a radius of 5 km with the search base point as the center, and searches for facilities existing within this range (step 1
06). In this case, if the number of searches is less than 20, the search range is set to 10 km, and if the number of searches is still less than 20, the search range is increased by, for example, 5 km so that the number of searches is 20 km. Until
Or, search until the search range reaches 100 km.

After searching the peripheral facilities in this way, as shown in FIG. 4, the CPU 1 displays a list of the searched peripheral facilities in order from the search base point on the display screen (step 107). In this case, of the searched facilities, five facilities are displayed in order from the closest one together with the button 31, and the button 31 in the center is surrounded by the cursor (thick frame) 26 and is selected. Has become. When the user presses the down arrow button 25, the cursor 26 moves to the lower button 31, and when the cursor 26 reaches the lowest button 31, the display scrolls next and the sixth and subsequent facilities are displayed.

After that, when the user presses the button 31 of the desired facility in step 108, the facility is set as the destination of the guide route in step 115. On the other hand, when the user presses the map button 27 displayed on the screen, the process proceeds to step 109. In step 109, as shown in FIG. 5, the CPU 1 displays a map image on the display device 15 in such a size that all the searched facilities centered on the search base point enter the screen, and sequentially searches all the searched facilities from the closest one. Numbers such as 1, 2, ..., 20 are displayed on the screen (however, in FIG. 5, the facilities 9 to 19 are omitted). For example, the distance between the farthest facilities (or the distance between the retrieval base point and the facility) is calculated from the search base point and the latitude and longitude of the retrieved facility, and the distance between them is 1.25 km.
1/12500 when: 1 / 2.5km or less
25,000, 1/50000 for 5km or less, 1/100000 for 10km or less, 1/25000 for 25km or less
The map image is displayed at a preset scale such as 0, ....

After that, when the user proceeds to step 110 and pushes the destination setting button 28 displayed on the screen with the cursor 21 at the desired facility, the process proceeds to step 115 and the facility at the cursor position is set as the destination. To do. On the other hand, when the user presses the enlargement button 29 displayed on the screen,
Move to step 111. In step 111, FIG.
As shown in, the vicinity of the facility where the cursor 21 is located on the previous screen is enlarged and displayed. After that, the process proceeds to step 112, and when the user presses the destination setting button 28 displayed on the screen, the process proceeds to step 115 to set the selected facility as the destination. On the other hand, if the list button 30 displayed on the screen in step 112 is pressed, step 11
Move to 3.

At step 113, as shown in FIG.
A list centering on the facility where the cursor was located on the previous screen is displayed in a superimposed manner with the button 31. In this state, pressing the up and down arrow buttons 24 and 25 displayed on the screen moves the cursor 25, and further pressing the up and down arrow buttons 24 and 25 scrolls the list. Next, in step 114, when the user presses the button 31 of the desired facility, the process proceeds to step 115 and the facility is set as the destination. On the other hand, if the map button 27 is pressed in step 114,
Return to step 109 to display the map image shown in FIG.
A map image is displayed at a scale where all the searched facilities are included in one screen. However, the cursor 21 is at the position of the facility surrounded by the thick frame on the list display screen (FIG. 7).

After the destination is set in step 115, the navigation device searches the guide route from the current position of the vehicle to the destination by a horizontal search method or the like, as in the conventional case. Then, the searched guide route is displayed thick in a different color from other roads on the screen. In the present embodiment, as shown in FIG. 5, since the search base point and all the searched facilities are displayed on one screen, the positional relationship between the search base point and each facility can be easily grasped. . This allows
The user can determine the destination in consideration of the traveling direction of the vehicle and the like.

If the vehicle is moving along the guide route toward the final destination and the peripheral facility search mode is set, the guide route in the map image shown in FIG. It is displayed as, so you can easily see the facilities along the guide route. Therefore, the user can minimize the loss of time to reach the final destination by selecting the facility along the guide route.

In the above example, the case where the search range is expanded stepwise until the number of searches reaches 20 has been described. However, the search range is fixed (for example, 10 km) and all facilities within the search range are searched. You may do it.

[0028]

As described above, according to the present invention,
Since the search base point and all searched facilities are displayed on a map image at a scale that fits on one screen, and the search base point and all searched facilities are displayed on this map image, the user can display the search base point and the surrounding facilities. It is possible to understand at a glance the positional relationship of the, and it is possible to easily select the optimum facility along the traveling direction. In addition, the user can select the most suitable peripheral facility in consideration of the route to go from now on,
It is possible to save unnecessary time such as deviating from the guide route to the final destination.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a vehicle-mounted navigation device.

FIG. 2 is a diagram (No. 1) showing a peripheral facility search and display method and a destination setting method according to the embodiment of the present invention.

FIG. 3 is a diagram (No. 2) showing the peripheral facility search display method and the destination setting method according to the embodiment of the present invention.

FIG. 4 is a diagram (No. 3) showing the peripheral facility search display method and the destination setting method according to the embodiment of the present invention.

FIG. 5 is a diagram (No. 4) showing the peripheral facility search display method and the destination setting method according to the embodiment of the present invention.

FIG. 6 is a diagram (No. 5) showing the peripheral facility search display method and the destination setting method according to the embodiment of the present invention.

FIG. 7 is a diagram (No. 6) showing the peripheral facility search display method and the destination setting method according to the embodiment of the present invention.

FIG. 8 is a flowchart (part 1) showing a peripheral facility search display method and a destination setting method according to the embodiment of the present invention.
It is.

FIG. 9 is a flowchart (part 2) showing a peripheral facility search display method and a destination setting method according to the embodiment of the present invention.
It is.

FIG. 10 is a diagram showing a conventional peripheral facility search method and a guide route destination setting method using the search result (Part 1).
It is.

FIG. 11 is a diagram showing a conventional peripheral facility search method and a guide route destination setting method using the search results (Part 2).
It is.

FIG. 12 is a diagram showing a conventional peripheral facility search method and a guide route destination setting method using the search result (part 3).
It is.

FIG. 13 is a diagram showing a conventional peripheral facility search method and a guide route destination setting method using the search results (Part 4).
It is.

[Explanation of symbols]

 1 CPU 2 Interface 3 ROM 4 Main Memory 5 Frame Buffer 6 Color Palette 7 DAC 9 Bus 10 Navigation Device Main Body 11 CD-ROM 12 Vehicle Movement Detection Unit 13 Operation Unit 15 Display Device

Claims (4)

[Claims] 1. In a peripheral facility search and display method using an in-vehicle navigation device, when a user specifies a search base point and a genre of a facility to be searched, a specified genre existing within a search range centered on the search base point is displayed. A peripheral facility search and display method, wherein a facility image is searched and a map image is displayed at a scale in which the search base point and all the searched facilities are included in one screen. 2. The peripheral facility search and display method according to claim 1, wherein the searched facilities are displayed on the map image with numbers in order from the search base point. 3. The peripheral according to claim 1, wherein the search range is expanded step by step until the number of searches reaches a preset number, and the facilities of the designated genre are searched. Facility search display method. 4. In a method of setting a destination for a guide route to a peripheral facility by an in-vehicle navigation device, when a user specifies a search base point and a genre of a facility to be searched, the search center point exists within a search range centered on the search base point. A facility of a designated genre is searched for, a map image is displayed at a scale in which the search base point and all the searched peripheral facilities are included in one screen, the map image display screen, the enlarged display screen of the map image, or the search. A destination route setting method, characterized in that when a user selects a specific facility on any one of the list display screens of selected facilities, the selected facility is set as the destination for the guided route search.