JP2000010475A - Route searcahble map display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a map display device capable of displaying a suitable route without doing setting of an assigned point again even when a user assigns a point in an unsearchable area. SOLUTION: The map display device 1 has a map database 3 which stores map data indicating a map image, a map engine 5 which acquires the map data from this map database 3 and forms the map image and a display device 7 which displays the formed map image. Next, the map display device 1 has an input device 9 for inputting of various instructions by the user. In addition, the map display device 1 has a route searching section 11 which searches the route from the start point arbitrarily assigned on the map image by the user using the input device 9 through a routing point to an end point. This route searching section 11 makes judgment as to whether the route searching of the start point, the routing point and the end point is possible or impossible. The route searching section, then, searches the route connecting only between the searchable points to each other along the roads on the map image.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a map display device using a computer, and more particularly to a map display device suitable for searching for a route between a plurality of points designated by a user.

[0002]

2. Description of the Related Art In general, a computer-based map display device that reads map data of a region desired by a user from a map database and displays the data on a display is known.
Many of the map display devices have a route search function. When the user sets the start point, the waypoint, and the end point of the route to be searched, the map display device searches for a route from the start point to the end point through the waypoint along the road on the map, and finds the route. Is displayed on the map.

[0003]

In many cases, the point to be set by the user is located in an unsuitable route search area such as a mountainous area with sparse roads.
The map display device determines that the route search is not possible,
Refuse to set the location. Therefore, the user often needs to change the route set point many times in order to set the route set point in the search appropriate area, and feels very uncomfortable. On the other hand, if the appropriate search area and the inappropriate search area are distinguished and displayed on the map display screen by color coding or the like, the above problem can be solved to some extent, but the appearance of the map is impaired.

Accordingly, it is an object of the present invention to provide a map display device capable of displaying an appropriate route without re-setting a designated point even when a user designates a point in an unsuitable search area. is there.

It is another object of the present invention to provide a map display device for notifying a user of an appropriate search area and an inappropriate search area without deteriorating the appearance of the map.

[0006]

A map display device according to the present invention comprises: a map database for storing map data indicating a map image; a map engine for acquiring map data from the map database to generate a map image; And an input device for inputting various commands. Next, the map display device determines whether each of the route setting points set by the user for the route search on the map image is an effective route setting point suitable for the route search or an invalid route setting point inappropriate for the route search. And a route search unit for calculating a route using only the effective route set point. Further, the map display device includes a display device that displays the generated map image, all the route setting points, and a route segment indicating the calculated route in a superimposed manner.

In a preferred embodiment, the route search section compares the calculated distance with a fixed reference distance, and calculates a distance between the route setting point and the fixed reference point. A propriety judging means for judging whether the route set point is suitable or not for the route search.

In a preferred embodiment, when the start point or the end point of the route setting point is an invalid route setting point, the route search unit calculates a line connecting the end of the searched route and the start point or the end point. It has minute calculating means. Then, the display device combines and displays the route segment and the line segment on the map image.

In a preferred embodiment, the apparatus further comprises a figure file for storing various figures, so that the root line segment can be stored as a line figure.

[0010] In a preferred embodiment, the apparatus further comprises an automatic scrolling means for automatically scrolling the route line segment on the map image.

[0011] In a preferred embodiment, the route search unit, based on the graphic file, determines a valid route setting point mark displayed on the valid route setting point and an invalid route setting point mark displayed on the invalid route setting point. It has a mark acquiring means for acquiring, and a display instructing means for instructing the display device to display a valid or invalid route setting point mark on each of the route setting points.

[0012]

FIG. 1 shows the entire configuration of an embodiment of a map display device according to the present invention.

The map display device 1 includes a map database 3 for storing map data indicating a map image, a map engine 5 for acquiring map data from the map database 3 and generating a map image, and a generated map image. And a display device 7 for displaying

Next, the map display device 1 includes an input device 9 for a user to input various commands. As the input device 9, for example, a mouse, a keyboard, a voice input device, or the like can be considered. The user can use the input device 9 to scroll the map image displayed on the display device 7, and the map engine 5 acquires map data from the map database 3 following the scroll operation. , A map image that moves at high speed is generated and displayed on the display device 7.

The map display device 1 includes a route search unit 11 that calculates a route from a start point arbitrarily specified on a map image by a user using the input device 9 to an end point through a waypoint. The route search unit 11 sends the route data indicating the route obtained as a result of the calculation to the map engine 5. The map engine 5 generates a route segment indicating the route based on the received route data and sends the route segment to the display device 7. The display device 7 displays on the map image
All route set points and route segments can be displayed.

Further, the map display device 1 includes a graphic file 13 for storing a graphic arbitrarily drawn by a user on a map and a user graphic such as a route segment indicating a searched route. When the user performs a route search, each time a route setting point (start point, waypoint, and end point) is set at an arbitrary point on the map, a route setting point mark is displayed on the route setting point on the map image. You. When the user orders a route search,
The route search unit 11 calculates a route that passes through the start point, the waypoint, and reaches the end point, and displays the route line segment on the map image of the display device 7 in a superimposed manner. The user can store the calculated route line segment as a user graphic of the line segment in the graphic file 13 as needed, and if stored, the root line segment will be displayed on the map image thereafter. It can be displayed on the display device 7 at any time.

The map display device 1 is typically a computer in which a map application for displaying a map, editing various user information linked to the map, searching for a place, and the like is installed. The user can connect the computer to the Internet to obtain necessary information from outside or transmit generated information to outside. Further, the user can connect a printing device such as a printer to the computer and acquire the map image as a printed matter. Further, the computer can be equipped with a GPS receiver to display the current position of the user on a map image (therefore, it can be used for car navigation).

FIG. 2 shows an example of a graphic user interface (GUI) displayed on the display device 7 by the map application installed on the map display device 1.

This GUI has a map window 15 for displaying a map on a large screen area, a guide window 17 for displaying a map on a small screen area, and a search window 19 for displaying a search menu. A scale slider bar 21 is provided on the right side of the map window 15. By operating this slider bar, the scale of the map displayed in the map window 15 can be changed. The guide window 17 displays a map having the same center coordinates as the map displayed in the map window 15, and also displays a frame-shaped range guide 23 representing the range of the map displayed in the map window 15. Is done. The scale of the map displayed in the map window 15 can be changed by grasping the corner of the range guide 23 with a cursor and enlarging / reducing it. On the right side of the guide window 17, there is a scale slider bar 25 for changing the scale of the map of the guide window 17. The scale of the guide window 17 can be changed independently of the scale of the map window 15. In both the map window 15 and the guide window 17, the map can be scrolled by moving the cursor (for example, by right-clicking the mouse), and the maps in both windows 15, 17 scroll in conjunction with each other. By successfully using the map window 15 and the guide window 17, it becomes easy to grasp the map and move the map to a desired place.

The search window 19 displays a search menu 27 for searching for a place on a map using place names, telephone numbers, postal codes, facility names, user information names, and the like as search keys. When an arbitrary item is designated on the search menu 27, the maps in the map window 15 and the guide window 17 automatically move so that the location of the designated item is located at the center coordinates.

At the top of the GUI, there are a plurality of toolbars 2 for performing operations of "edit", "internet", "route search", "measurement", "map output", and "GPS".
9 to 39 are arranged in an overlapping manner. These toolbars 2
By clicking the tabs 9 to 39, the toolbar can be displayed on the front. In the illustrated example, the route search toolbar 27 is displayed on the front.

The editing toolbar 29 is used when creating and editing user information linked to a map. The Internet toolbar 31 is used for uploading user information to an information server connected to the map display device 1 via the Internet, downloading user information from the information server 5, and transmitting / receiving the information attached to an e-mail. Can be The route search toolbar 33 is used when automatically searching for a route from a start point arbitrarily designated by a user to an end point via a waypoint on a map. The measurement toolbar 35 is used when measuring the size, distance, required time, and the like of the user graphic. The map output toolbar 37 is used when printing a selected range of a map or outputting it as a file to an external storage device. The GPS toolbar 39 can be used when the map display device 1 is equipped with a GPS receiver, and is used when receiving the latitude and longitude of the current position from the GPS receiver 7 and displaying the current position on a map image. Can be Although not shown, these toolbars 29 to 39 are provided with various tools for each operation.

The route search toolbar 33 includes a route setting tool 41 for setting a start point, a waypoint, and an end point.
A setting release tool 43 for releasing the setting of the route, a result storage tool 45 for storing a line segment indicating the route obtained as a result of the search as a user graphic, and a result deletion for deleting the stored user graphic A tool 47 and the like are provided.

The search toolbox 49 also includes a transit point list window 51 for displaying a list of start points, transit points, and end points set by the user, a scroll bar 53 for scrolling the list display, and transit points displayed in the list. A place confirmation tool 55 for confirming the position of the place on the map image, a waypoint deletion tool 57 for deleting the placepoints displayed in the list, and whether or not to search for a route by giving priority to a specific road is selected. And a search start tool 61 for starting the search after setting the start point, the waypoint, and the end point.

In the GPS toolbar 37, the current position is registered on the map as an icon as a user graphic, and a passing route connecting the current position at each point in time is registered as a user graphic on a line. Tools are also available. By registering the search route, the current position, and the passing route as a user figure, the user can freely edit, upload, download, or attach the figure to an e-mail.

The flow of the route search process will be described with reference to FIGS.

First, the user selects the route search toolbar 3
3 is clicked with the mouse to bring it to the front.

Next, after clicking the route setting tool 41 with a mouse, the user sets a route setting point (a starting point, an arbitrary number of via points and an ending point) on the map image (S).
1). When the setting of the route setting point is completed and the user clicks the search start tool with the mouse, the route search unit 11 starts the route search (S2). When the route search is completed, the route obtained as a result of the search is displayed on the map image as a route segment 63 (S3). If the user does not save the route segment 63, the process ends. If the user wants to save this route segment 63, the user:
Click the result storage tool with the mouse and route line 63
Is instructed to the graphic file 13 (S4), and the graphic file stores it as a user graphic (S5).

Note that, by using the editing toolbar 29, it is possible to set an action of "execute automatic scrolling" to be linked to the stored route line segment. With this setting, when the user clicks on the route line segment on the map window 15, the map window 15 and the guide window 17 trace the line segment from the start point to the end point at the center point of each window. Thus, the map is scrolled by taking the registered scrolling time. For example, the route segment 6 shown in FIG.
When this action is set to 3, this route segment 6
When you click 3, the route from the intersection in front of the Prime Minister's Office to Hotel Okura via the JPO will be guided by automatic map scrolling. This function can be used to check directions. Such scroll processing can also be used when the user himself draws a line segment such as a route on the map screen using the drawing tool of the editing toolbar 29.

Referring to FIG. 1 and FIG. 4, the flow of the route setting point setting process in S1 of FIG. 3 will be described in detail.

First, the user scrolls the map image in the map window 15 to display a point to be a starting point of the route in the map window 15. Alternatively, the user may specify the starting facility name, address, or telephone number on the search menu 27 and display the map image of the point in the map window 15. Then, the user moves the cursor on the map image, clicks the mouse at the point to be the start point of the route, and specifies the start point (S1).
1).

When the start point is designated, the route search unit 11
Determines whether the starting point is valid or invalid (that is, whether it is suitable for route search or not) (S12). If the starting point is valid, the route search unit 11 instructs the map engine 5 to display a predetermined “red starting point mark” at the position of the starting point on the map image (S13).
A predetermined "blue starting point mark" is displayed (S14). Less than,
As for the validity of the route set point,
"Red mark" indicates validity, and "blue mark" indicates invalidity. By performing such color coding, the user can quickly determine whether or not the designated route setting point can be searched.

After the start point has been set, the user moves the cursor on the map image to set the next waypoint or end point. Following the movement of the cursor, a "red transit point marker" for the next route setting point is displayed on the cursor, and a "yellow line segment" connecting the moving cursor and the start point or transit point set immediately before is displayed. Is displayed (S15).

Next, the user moves the cursor to a point to be set as a waypoint and clicks the mouse to specify the waypoint (S16).

Then, as in S12 of the starting point setting process,
It is determined whether the designated waypoint is valid or invalid (S1).
7) If the via point is valid, the "yellow line segment" is fixed and the "red via point marker" displayed on the cursor at the same time.
Is fixed on the via point (S18). If the via point is invalid, the yellow line segment is fixed and the "red via point marker" displayed on the cursor is changed to the "blue via point marker". It is fixed on the waypoint (S19).

Then, when the user moves the cursor to specify the next route setting point, the process returns to S15, where the "red via point mark" on the moving cursor and the route setting point set immediately before and after the moving cursor are set. "Yellow line segment" connecting
Is displayed following the movement of the cursor. When there are a plurality of waypoints, the user repeats the operation from S15 to S18 or S19. In addition, numbers are assigned to the respective “points of waypoint” in the order in which the waypoints are set.

When the user specifies the end point, the user
When the cursor is moved to the end point and the mouse is double-clicked (S20), it is determined whether the end point is valid or invalid (S21). If the end point is valid, the "yellow line segment" is fixed. At the same time, the “marked through red” displayed on the cursor is changed to the “red end mark” and fixed on the end point (S22). If the end point is invalid, the “yellow line segment” is fixed. At the same time, the “marked point via red” displayed on the cursor is changed to a “blue end point mark” and fixed on the end point (S23). In addition, along with the setting of the start point, the waypoint, and the end point, the "route setting point mark" of each point and the address (place name) of the point are sequentially displayed in the waypoint list 49.
In addition, the “S” indicating the start is displayed in the “starting point mark” displayed on the map image and in the waypoint list 49,
A number indicating the number of the waypoint from the start point is automatically added to the "waypoint mark", and a letter "G" indicating the goal is automatically added to the "endpoint mark". The order of setting points can be easily grasped.

The above processing will be specifically described with reference to the example of FIG.

When the start point is the “intersection in front of the Prime Minister's Office”, the “intersection” is the “Patent Office”, and the end point is “Hotel Okura”, the user first moves the cursor to the “intersection” of the prime minister's residence. Click the mouse and specify the starting point. When the start point is designated, the “red prime intersection” is displayed, so the “red start point mark” 62 is displayed. Next, the user moves the cursor to a point on the "patent office" which is a waypoint. During this cursor movement, a “marked via red” is displayed on the movement cursor, and the movement cursor is connected to the “Prime's Office intersection” by a “yellow line segment”. When the cursor comes over the "Patent Office", the user clicks the mouse and specifies a waypoint. When a via point is specified, the point of the "Patent Office" is valid, so the "Red Via Mark" 64 is fixed, and the "Yellow line segment" 60 connecting the "Prime Office intersection" and the "Patent Office" is also included. Fixed. Finally, the user moves the cursor to “Hotel Okura” which is the end point, double-clicks the mouse, and specifies the end point. When the end point is specified, the “Hotel Okura” point is valid, so the “Red End Point Marker” 66 is displayed, and the “Yellow line segment” 65 connecting “Patent Office” and “Hotel Okura” is also fixed. You. When the setting of the route setting point is completed, as shown in FIG. 2, on the map image, a “starting point landmark” 62, a “transit point landmark” 64 with a number in the set order, and an “end point landmark” 66,
"Yellow line segments" 60 and 65 connecting these route setting points in the set order are displayed. (In addition,
In FIG. 2, the numbers assigned to the waypoints are assumed to be “1” at the start point, and the waypoints are sequentially numbered from “2”. )

Next, referring to FIG. 5, S12 and S1 of FIG.
7 and the flow of the process of the validity check of the route set point in S21 will be described in detail.

When the route setting point is designated, the route search section 11 calculates the distance between the route setting point and the nearest intersection on the map image (S31).

On the map application, a reference distance is predetermined, and the route search unit 11
Compares the reference distance with the distance calculated in S31 (S32). If the calculated distance is equal to or less than the reference distance, the route search unit 11 determines that the route set point is valid (S33), and determines that the calculated route distance is invalid if the calculated distance exceeds the reference distance (S34). ). For example, if the reference distance is fixed at 2 km, the route set point is
When it is within 2 km from the nearest intersection, it is determined to be valid, and a “red eye” is displayed on the route setting point. Conversely, if the route setting point is more than 2 km away from the nearest intersection, it is determined that the route setting point is invalid, and a “blue mark” is displayed on the route setting point.

As another method for determining the validity check of the route setting point, a method of calculating the distance to the nearest road to the route setting point to determine validity / invalidity can be considered.

Next, referring to FIGS. 1 and 6, S2 in FIG.
Will be described in detail.

After the route set point has been set, the user
The search start tool 61 is clicked to instruct route calculation (S41).

When the route calculation is instructed, the route search unit 11 performs the route calculation using only the effective start point, waypoint, and end point (S42). This route calculation finds a route connecting the route setting points along the road on the map image in the set order. If an invalid route set point exists in all the route set points, the existence is ignored, and a route connecting the valid route set points before and after the invalid route set point is calculated. If a plurality of invalid route setting points are continuous, the effective route setting points before and after the series of invalid route setting points are used. In general, the route setting points are connected at the shortest distance. However, the user or the creator of the map display device may prefer to use a highway, a toll road, a main road, or the like as a route to some extent. You can also set preconditions.

When the route using only the valid route set points is calculated, the route search unit 11 determines whether or not there is an invalid start point or end point among all the route set points (see FIG. 4). S37). If there is no invalid start or end point,
The route calculated in S42 is displayed as a search route on the map image as a line segment (S44). If the start point or the end point is invalid, the route search unit 11 calculates a line segment connecting the calculated end point of the route and the invalid start point or end point, and sends the calculated route data and the line segment data to the map engine 5. send. The map engine 5 generates a route segment and a segment based on the data, and sends the route segment and the segment to the display device 7.
The display device 7 combines the route line segments and the line segments and displays them on the map image. The end of the route indicates a valid waypoint immediately after the start point when the start point is invalid, and a valid waypoint immediately before the end point when the end point is invalid.

FIGS. 7 and 8 show examples of the above processing results.

FIGS. 7 and 8 show map images obtained as a result of the route search.

In FIG. 7, since the start point 67, the waypoint 69, and the end point 73 are valid, the respective "marks" are displayed in red, and the waypoint 71 is invalid, so the "marks" are displayed in blue. The route setting points are connected by a “yellow line segment” 75. According to S42, the existence of the invalid transit point 71 is ignored, and the route segment 77 connecting the valid start point 67, transit point 69, and end point 73 along the road is calculated. And starting point 6
Since 7 and the end point 73 are valid, the calculated route segment 77 is displayed as a search route according to S44.

In FIG. 8, since the start point 79 and the waypoint 81 are valid, each “mark” is displayed in red, and the end point 8
Since 3 is invalid, the “end point mark” is displayed in blue, and each route setting point is connected by a “yellow line segment” 85. According to S42, the existence of the invalid end point 83 is ignored, and the valid start point 79,
A route segment 87 connecting the waypoint 81 along the road is calculated. Since the end point 83 is invalid, the line segment 89 connecting the end point 83 and the via point 81 is displayed as a search route together with the calculated line segment 87 in accordance with S44.

By performing the above-described route display processing, the user can obtain a route having a certain level of accuracy even if a part of the route set point includes an unsearchable area. it can.

The preferred embodiment of the present invention has been described above. However, the above-described embodiment is an exemplification for describing the present invention, and is not intended to limit the scope of the present invention only to this embodiment. Without departing from the spirit of the invention, those skilled in the art
The present invention can be implemented in various other forms in which various modifications, improvements, modifications, simplifications, and the like are added to the above-described embodiment.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram showing one embodiment of a map display device of the present invention.

FIG. 2 is an exemplary view showing an embodiment of a GUI displayed on a display device.

FIG. 3 is a flowchart illustrating a flow of a route search process.

FIG. 4 is a flowchart showing a flow of a route setting point setting process.

FIG. 5 is a flowchart showing the flow of processing for validity checking of a route setting point.

FIG. 6 is a flowchart illustrating a flow of a route calculation process.

FIG. 7 is a diagram showing an example of a search route displayed on a map image.

FIG. 8 is a diagram showing an example of a search route displayed on a map image.

[Explanation of symbols]

 1 Map Display Device 3 Map Database 5 Map Engine 7 Display Device 9 Input Device 11 Route Search Unit 13 Graphic File 15 Map Window 17 Guide Window 19 Search Window 21 Scale Slider Bar 23 Range Guide 25 Scale Slider Bar 27 Search Menu 29 Editing Toolbar 31 Internet Toolbar 33 Route Search Toolbar 35 Measurement Toolbar 37 Map Output Toolbar 39 GPS Toolbar 41 Route Setting Tool 43 Setting Release Tool 45 Result Save Tool 47 Result Delete Tool 49 Search Toolbox 51 Intermediate List Window 53 Scroll Bar 55 Location Confirmation Tool 57 Transit point deletion tool 59 Priority road check box 60 Yellow line segment 61 Search start tool 62 Red start mark 6 Route segment 64 Red transit point mark 65 Yellow line segment 66 Red end point marker 67 Start point 69 Via point 71 Via point 73 End point 75 Yellow line 77 Route segment 79 Start point 81 Via point 83 End point 85 Yellow segment 87 Route segment 89 line segment

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme court ゛ (Reference) G09G 5/36 510 G06F 15/62 335 5H180 (72) Inventor Daisuke Tabuchi 3-14 Sotokanda, Chiyoda-ku, Tokyo No. 10 Sofmap Future Design Co., Ltd. In-house (72) Inventor Yasuo Hinugano 3-14-10 Sotokanda, Chiyoda-ku, Tokyo In-house (72) Inventor Yuki Ito 3 Sotokanda, Chiyoda-ku, Tokyo No. 14-10 Sofmap Future Design Stock Company In-house F-term (reference) 2C032 HC25 HD04 HD16 HD21 HD24 2F029 AB07 AB13 AC01 AC02 AC04 AC09 AC14 AD07 5B050 BA17 CA07 EA07 FA02 FA09 FA14 5B075 ND06 ND23 PP13 PQ02 PQ69 UQP U14 5C082 BA12 CA56 CA72 DA87 MM09 5H180 AA01 BB04 BB05 CC12 FF05 FF22 FF32 FF33 FF35 FF36 FF38

Claims (18)

[Claims] 1. A map database for storing map data indicating a map image, a map engine for acquiring the map data from the map database and generating a map image, and an input device for a user to input various instructions. Whether each of the route set points set on the map image by the user to search for a route is an effective route set point suitable for route search or an invalid route set point inappropriate for route search. Judgment, a route search unit that calculates the route using only the effective route set point, the map image, all of the route set points, and a route segment indicating the calculated route are superimposed. A map display device comprising a display device for displaying. 2. The method according to claim 1, wherein the route search unit calculates a distance between the route setting point and a fixed reference point, and compares the calculated distance with a fixed reference distance. 2. The map display device according to claim 1, further comprising a determination unit for determining whether the route setting point is suitable or not for the route search. 3. The route search unit according to claim 1, wherein a start point or an end point of the route setting point is the invalid route setting point.
The display device has a line segment calculating means for calculating a line segment connecting the end of the calculated route and the start point or the end point, and the display device displays the route line segment and the line segment on the map image. The map display device according to claim 1, wherein the map display device is combined and displayed. 4. The map display device according to claim 1, further comprising a graphic file for storing various graphics, whereby the route segment can be stored as a segment graphic. 5. The map display device according to claim 1, further comprising an automatic scrolling means for automatically scrolling on said route line segment on said map image. 6. The route search unit acquires, from the graphic file, a valid route setting point mark displayed on the valid route setting point and an invalid route setting point mark displayed on the invalid route setting point. 2. The map display according to claim 1, further comprising: a landmark acquiring unit that performs the display, and a display instruction unit that instructs the display device to display the valid or invalid route setting point mark on each of the route setting points. apparatus. 7. A process of obtaining map data and generating a map image, a process of displaying the map image, and a route setting point set on the map image by a user to search for a route is a route search. Determining whether the route is a valid route set point suitable for, or an invalid route set point unsuitable for route search; calculating the route using only the valid route set point; and a route line indicating the route. A route display method, comprising: generating a minute; and displaying all of the route setting points and the route line segment on the map image. 8. The method of determining whether the route set point is valid or invalid includes: calculating a distance between the route set point and a fixed reference point; and calculating the calculated distance and the fixed reference distance. Comparing the route setting point with a route search to determine whether the route set point is suitable or not. 9. The process of searching for a route, when a start point or an end point of the route setting point is an invalid route setting point, calculates a line segment connecting an end of the calculated route and the start point or the end point. The route display method according to claim 7, further comprising a step of calculating, wherein the step of displaying the route line segment displays the route line segment and the line segment in combination on the map image. 10. The route display method according to claim 7, further comprising a step of storing the route segment as a line segment graphic. 11. The route display method according to claim 7, further comprising a step of automatically scrolling the route line segment on the map image. 12. An effective route setting point mark displayed on the effective route setting point on each of the route setting points on the map image, and an invalid route setting point displayed on the invalid route setting point. The route display method according to claim 7, further comprising a step of displaying each of the landmarks. 13. A process of obtaining map data and generating a map image, a process of displaying the map image, and a route setting point set on the map image by a user to search for a route is a route search. Determining whether the route is a valid route set point suitable for, or an invalid route set point unsuitable for route search; calculating the route using only the valid route set point; and a route line indicating the route. Computer-readable program storing a program for causing a computer to execute a route display method including a step of generating a minute and a step of displaying all of the route setting points and the route segments on the map image. Storage media. 14. A process for obtaining map data and generating a map image; displaying the map image; and a route setting point set on the map image by a user to search for a route includes a route search. Determining whether the route is a valid route set point suitable for, or an invalid route set point unsuitable for route search; calculating the route using only the valid route set point; and a route line indicating the route. Generating a minute, and displaying all of the route setting points and the route segment on the map image, and determining whether the route setting point is valid or invalid. And calculating a distance between the reference point and a certain reference point, and comparing the calculated distance with a certain reference distance to determine whether the route set point is suitable or not for a route search. Computer readable storage medium storing a program for executing a route display method and a process of determining the computer. 15. A step of obtaining map data and generating a map image; a step of displaying the map image; and a route setting point set on the map image by a user to search for a route is a route search. Determining whether the route is a valid route set point suitable for, or an invalid route set point unsuitable for route search; calculating the route using only the valid route set point; and a route line indicating the route. Generating a minute, and displaying all of the route setting points and the route line segments on the map image, wherein the step of searching for the route is performed when the start point or the end point of the route setting point is In the case of an invalid route setting point, the method includes a step of calculating a line segment connecting the calculated end of the route and the start point or the end point, and the step of displaying the route line segment is performed on the map. On an image, a computer-readable storage medium storing a program for executing a route display method for displaying by coupling the line and the root line to the computer. 16. A process for obtaining map data and generating a map image, a process for displaying the map image, and a route setting point set on the map image by a user to search for a route includes a route search Determining whether the route is a valid route set point suitable for, or an invalid route set point unsuitable for route search; calculating the route using only the valid route set point; and a route line indicating the route. A route display method, comprising: generating a minute; displaying all of the route setting points and the route segment on the map image; and storing the route segment as a segment graphic. Computer-readable storage medium storing a program for causing a computer to execute the program. 17. A process for acquiring map data and generating a map image, a process for displaying the map image, and a route setting point set on the map image by a user to search for a route, Determining whether the route is a valid route set point suitable for, or an invalid route set point unsuitable for route search; calculating the route using only the valid route set point; and a route line indicating the route. Generating a minute, displaying all of the route setting points and the route segment on the map image, and automatically scrolling on the route segment. Computer-readable storage medium storing a program for causing a computer to execute the program. 18. A process for obtaining map data and generating a map image, a process for displaying the map image, and a route setting point set on the map image by a user to search for a route includes a route search A step of determining which of an effective route set point suitable for, or an invalid route set point unsuitable for route search, on each of the route set points on the map image, on the effective route set point Displaying the valid route setting point mark and the invalid route setting point mark displayed on the invalid route setting point, respectively; calculating the route using only the valid route setting point; A program for causing a computer to execute a route display method, comprising the steps of: generating a route segment indicating the following; and displaying the route segment on the map image. Computer readable storage medium storing.