JP2010281711A - Map display apparatus and navigation apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a map display apparatus and a navigation apparatus for inhibiting a user from unnecessarily scrolling a map. <P>SOLUTION: While the map is scrolled and displayed, a map display range is moved according to an operation for moving a cursor 510 (501-507). If the center of the map display range approaches a border of a prefecture 520 and a distance between the center of the map display range and the border of the prefecture 520 is within a predetermined distance (504-506), the border figure 511 representing the border of the prefecture and the name 512 of the prefecture to which a point corresponding to the center of the map display range belongs are displayed on a map image 321 within the map display range (d, e). <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a map scroll display technique suitable for a navigation device that presents a current position on a map to a user.

  As a technique related to map display in a navigation device, a technique of changing the range of a map to be displayed (performing map scroll display) in accordance with a user's map scroll operation is known (for example, Patent Document 1).

  In addition, as a technology related to the map display in the navigation device, when a vehicle equipped with the navigation device passes through the boundaries of administrative boundaries such as prefectures and municipalities, a technology for displaying the names of administrative boundaries after passing, There is also known a technique for displaying a designated administrative boundary map in a form in which the boundary of the designated administrative boundary is highlighted (for example, Patent Document 2).

JP 2000-292194 A JP 08-14924

  When scrolling a map, as the user scrolls through the map, the user cannot keep up with the movement of the map and loses sight of where the map is currently displayed. The map may be scrolled more than necessary. Here, such a problem becomes particularly remarkable when high-speed scroll display is performed.

  Then, this invention makes it a subject to suppress that a user scrolls a map more than necessary in the scroll display of a map.

  In order to achieve the above object, the present invention provides a map display device for displaying a map, scroll display means for performing scroll display for moving the display range of the map in response to a user's scroll operation, and during the scroll display. And a boundary graphic display means for displaying, on the map, a boundary graphic representing a portion of the administrative boundary in the display range when the boundary of the administrative boundary exists in the display range. .

  However, in such a map display device, the boundary graphic display means is performing the scroll display, and a predetermined reference point within the display range determined with respect to the display range approaches a boundary of the administrative boundary more than a predetermined level. A boundary graphic representing the portion of the administrative boundary in the display range may be displayed on the map.

  Further, in such a map display device, when the boundary of the administrative boundary exists in the display range during the scroll display, the name of the administrative boundary including the point corresponding to the center of the display range is displayed. It is also preferable to provide administrative boundary name display means for displaying in the area corresponding to the administrative boundary where the point corresponding to the center of the display range of the map is included.

  According to such a navigation device, when the display range of the map is likely to exceed the boundaries of administrative boundaries such as borders, prefectural borders, municipal boundaries, etc. by scrolling the map, the administrative boundaries are displayed on the map. And the name of the administrative boundary are displayed, and the user can be informed that the scrolling of the map has progressed to the vicinity of the boundary of the administrative boundary.

Therefore, from this presentation, the user can recognize that the scroll of the map has progressed to the border of the administrative boundary, and correct this if the map display has been scrolled more than necessary. it can.
In order to achieve the above object, the present invention provides a map display device for displaying a map, scroll display means for performing scroll display for moving the display range of the map in response to a user's scroll operation, and during the scroll display. The boundary of the administrative boundary exists in the display range, and the display range is scrolled in a direction in which a predetermined reference point in the display range determined with respect to the display range approaches the boundary direction of the administrative boundary. Scroll speed changing means for lowering the moving speed of the display range of the scroll means when moved by the means.

  However, in such a map display device, the scroll speed changing means is configured such that the predetermined reference point within the display range determined during the scroll display and determined with respect to the display range approaches a boundary of the administrative boundary more than a predetermined level. And when the display range is moved by the scroll means in the direction in which the reference point approaches the boundary of the administrative boundary, the moving speed of the display range of the scroll means is reduced. Also good.

  According to such a navigation device, when the display range of the map is likely to exceed the boundaries of the administrative boundaries such as borders, prefectural borders, municipal boundaries, etc., the scroll speed of the map is increased. Slow down. Therefore, from such a low-speed scroll display, the user can easily grasp that the map has scrolled to the border of the administrative boundaries, and the map display has been scrolled more than necessary. You can correct this.

  In order to achieve the above object, the present invention provides a map display device for displaying a map, scroll display means for performing scroll display for moving the display range of the map in response to a user's scroll operation, and during the scroll display. The boundary of the administrative boundary exists in the display range, and the display range is scrolled in a direction in which a predetermined reference point in the display range determined with respect to the display range approaches the boundary direction of the administrative boundary. And a caution sound output means for outputting a predetermined caution sound when moved by the means.

  However, in such a map display device, the caution sound output means may be configured such that the predetermined reference point within the display range determined during the scroll display and determined with respect to the display range approaches a boundary of the administrative boundary more than a predetermined level. In addition, a predetermined caution sound may be output when the display range is moved by the scroll means in a direction in which the reference point approaches the boundary of the administrative boundary.

  According to such a navigation device, when the display range of the map is likely to exceed the boundary of the administrative boundary such as the border, the prefectural border, the municipality border, etc. by the scroll display of the map, the predetermined warning sound is generated. , It can be shown to the user that the scroll of the map has advanced to the vicinity of the border of the administrative world.

Therefore, from this presentation, the user can recognize that the scroll of the map has progressed to the border of the administrative boundary, and correct this if the map display has been scrolled more than necessary. it can.
In the above map display device, the reference point may be a center point of the display range. The map display device may be provided with cursor display means for displaying a cursor on the map, and the reference point may be a point corresponding to the display position of the cursor.
Each of the above map display devices can also be applied to map display in a navigation device. That is, in this case, when the current position is included in the display range, the current position calculation means for calculating the current position, and the current position is indicated on the map. What is necessary is just to comprise a navigation apparatus by the present position display means etc. which display a mark on the said map.

  As described above, according to the present invention, it is possible to suppress the user from scrolling the map more than necessary in the scroll display of the map.

It is a block diagram which shows the structure of the navigation system which concerns on embodiment of this invention. It is a figure which shows the map data which concern on embodiment of this invention. It is a figure which shows the example of a display of the navigation system which concerns on embodiment of this invention. It is a flowchart which shows the map scroll process which concerns on embodiment of this invention. It is a figure which shows the map scroll processing example which concerns on embodiment of this invention. It is a flowchart which shows the map scroll process which concerns on embodiment of this invention. It is a figure which shows the map scroll processing example which concerns on embodiment of this invention.

Hereinafter, an embodiment of the present invention will be described taking application to a navigation system mounted on an automobile as an example.
FIG. 1 shows a configuration of a navigation system according to the present embodiment.
As shown in the drawing, the navigation system includes a navigation device 1, an operation unit 2, a display device 3, a vehicle state sensor 4, a GPS receiver 5, and a speaker 6. Here, the vehicle state sensor 4 is various sensors that detect a vehicle state, such as an azimuth sensor such as an angular acceleration sensor or a geomagnetic sensor, or a vehicle speed sensor such as a vehicle speed pulse sensor.

  Then, the navigation device 1 uses a map data storage unit 11 that is a storage device such as a DVD drive or HDD that stores map data representing a map, a current state calculation unit 12, a GUI using the operation unit 2 and the display device 3 as a user. A GUI control unit 13, a route search unit 14, a memory 15, a control unit 16, a guidance image generation unit 17, and an audio output unit 18.

  However, the above navigation apparatus 1 may be a CPU circuit having a general configuration including peripheral devices such as a microprocessor, a memory, and other graphic processors and geometric processors in terms of hardware. In this case, each unit of the navigation device 1 described above may be realized as a process embodied by a microprocessor executing a program prepared in advance. In this case, such a program may be provided to the navigation apparatus 1 via a recording medium or an appropriate communication path.

Next, FIG. 2 shows the contents of the map data stored in the map data storage unit 11.
As shown in the figure, it includes management data that describes the date and time of production of map data, basic map data that represents the map, route data that shows information such as route type and route name such as national / prefectural roads for each route, and prefectural border data Consists of. The prefectural border data has a boundary record provided for each prefecture, and each boundary record includes boundary coordinate data indicating the name of the corresponding prefecture and the position and shape of the boundary of the corresponding prefecture. Stored.

Now, in such a configuration, the current state calculation unit 12 of the navigation device 1 repeatedly performs the following processing.
That is, the current state calculation unit 12 determines the previous time indicated by the basic map data of the map data read from the map data storage unit 11 with respect to the current position estimated from the outputs of the vehicle state sensor 4 and the GPS receiver 5. By performing map matching processing with a map around the current position, the most probable coordinates as the current position and the most probable direction as the current traveling direction are determined as the current position and the current traveling direction, respectively, and the memory 15 Set to.

  The control unit 16 accepts a destination setting from the user via the operation unit 2 and the GUI control unit 13 in response to a user destination setting request, and sets the destination setting in the memory 15. Then, after receiving the destination setting, the control unit 16 causes the route search unit 14 to search for a recommended route to the destination set in the memory 15 if the user instructs the recommended route search. The route search unit 14 reads the map data of the necessary geographical range from the basic map data in the map data storage unit 11, sets the minimum cost route from the current position set in the memory 15 to the destination, the minimum distance, etc. The recommended route is calculated based on the predetermined cost model, and the calculated route data of the recommended route is set in the memory 15.

In addition, when the current position set in the memory 15 becomes near the destination, the control unit 16 determines that the destination has arrived, and also performs processing for clearing the destination and the recommended route set in the memory 15. .
The control unit 16 repeats the following guide image generation process.
That is, the control unit 16 determines the display direction so that the current traveling direction set in the memory 15 is upward, determines the map scale according to the user setting or initial setting made in advance, and sets the current position as a reference. A geographical range having a predetermined size determined according to the determined display orientation and the determined map scale around the current position is determined as the map display range.

  Then, the guide image generator 17 draws a map based on the map data in the determined map display range, and draws a current position mark at a position on the map corresponding to the current position set in the memory 15. Make it. Further, when the route data of the recommended route is set in the memory 15, the control unit 16 causes the guide image generation unit 17 to display a recommended route graphic representing the recommended route in the determined map display range on the map. Let it draw. In addition, when the destination set in the memory 15 is included in the map display range, the control unit 16 causes the guidance image generation unit 17 to draw a destination mark indicating the position of the destination on the map.

On the other hand, the guide image generation unit 17 generates the guide image by performing the above drawing under the control of the control unit 16, and displays the guide image on the display device 3 via the GUI control unit 13.
FIGS. 3b and 3c show examples of guidance images displayed in this way. FIG. 3b shows that the current position is at the position 300 in FIG. 3a and the range 301 is set as the map display range. 3c shows a guidance image when the current position is at the position 310 in FIG. 3a and the range 311 is set as the map display range.

  Now, as shown in FIGS. 3b and 3c, the guide image has a current position mark 322 represented on a map image 321 representing a map within the map display range. However, in a map scroll process to be described later, if the map display range does not include the current position, the current position mark 322 is not included in the guidance image.

  When the destination 330 and the recommended route 340 are set as shown in FIG. 3a, the guide image is a recommended route graphic 323 representing the recommended route within the map display range as shown in FIGS. 3b and 3c. Is displayed on the map image 321, and the destination is included in the map display range, the guide image further includes a destination mark 324 representing the destination as shown in FIG. It will be the one displayed above.

In such a navigation device 1, when the control unit 16 receives a map scroll start operation from the user via the operation unit 2 and the GUI control unit 13, the control unit 16 performs the following map scroll process.
FIG. 4 shows the procedure of this map scroll process.
As shown in the figure, in this process, first, the cursor is displayed at the center position of the map image of the guide image displayed on the display device 3 via the GUI control unit 13 (step 402). That is, when the geographical range indicated by 501 in FIG. 5a is set as the display range, the cursor 510 is placed at the center of the map image 321 representing the map within the geographical range indicated by 501 as shown in FIG. 5b. Is displayed. Note that X in FIG. 5a represents the center of the map display range.

Then, the occurrence of the cursor movement operation by the operation of the direction key of the user operation unit 2 (step 404) and the occurrence of the display return operation of the user operation unit 2 (step 406) are monitored. Each operation of the operation unit 2 is input to the control unit 16 via the GUI control unit 13.
When a display return operation occurs (step 406), the display of the cursor 510 is deleted, and the display range is returned to the display range based on the current position before the map scroll process is started (step 408). End the map scrolling process.

  On the other hand, if a cursor movement operation has occurred (step 404), the display range is changed so that the center of the display range moves in a direction in which the cursor movement operation is accepted by a predetermined amount of movement, and the guidance image is displayed. Is updated (step 410). In other words, the display range of the cursor 510 does not change, the display range is changed so that the position of the cursor 510 on the map advances in a predetermined movement amount in the direction in which the cursor movement operation is accepted, and the guidance image generation unit 17 In addition, the guide image displayed on the display device 3 is updated to the guide image including the map image 321 in the display range after the change.

  Next, the map data is taken into consideration whether the prefectural border on the map image 321 exists within a predetermined distance from the center of the map display range (position where the cursor 510 is displayed), while taking the map scale into consideration. The determination is made with reference to the prefectural border data (step 412), and if it does not exist, the process returns to the monitoring of steps 404-406. Here, the step 412 determines whether or not the prefectural border on the map image 321 exists within the map display range, and if not, returns to the monitoring of the step 404-406. The process may proceed to 414.

  When the processing proceeds to step 414, the prefectural border in the map display range is drawn on the map image 321 of the guide image on the guide image generation unit 17 (step 414), and the center of the map display range (cursor 510 The name of the prefecture to which the point on the map image 321 corresponding to (the position where is displayed) belongs is drawn on the map image 321 of the guide image on the map image 321 (step 416). Here, the name of the prefecture is drawn on the map image 321 at a position in the area corresponding to the prefecture of the name.

Then, the process returns to the monitoring in steps 404-406.
The map scroll process has been described above.
An example of such a map scroll process is shown in FIG.
Now, there is a prefectural border as shown by 520 in FIG. 5A, and the map display range sequentially moves as 501, 502, 503, 504, 505, 506, and 507 in accordance with the movement operation of the user's cursor 510 in the 500 direction. It shall be.
As shown in the figure, the center of the map display range is assumed to be closer to the prefectural border 520 and 501, 502, 503, 504, 505, and then away from the prefectural border 520 beyond the prefectural border 520.
In this case, during the period in which the center of the map display range approaches the prefectural border 520, the center of the map display range and the prefectural border 520 are separated by a predetermined distance (map display ranges 501, 502, and 503 are set. The guidance image displayed during the period of time) is as shown in the guidance image of FIG. 5b displayed for the map display range 501 and the guidance image of FIG. 5c displayed for the map display range 502, as shown in FIG. The cursor 510 is displayed on the normal guide image shown in c.

  On the other hand, during the period when the center of the map display range thereafter approaches the prefectural border 520, the center of the map display range and the prefectural border 520 are close within a predetermined distance (the map display ranges 504 and 505 are set). In addition to the cursor 510 on the normal guidance image shown in FIGS. 3b and 3c, the guidance image displayed during the period) is displayed on the map display range 505 as shown in the guidance image of FIG. A boundary graphic 511 representing the prefectural border and a name 512 of the prefectural government (here, the prefectural government that is about to depart from the map display range as the map scrolls) to which the point corresponding to the center of the map display range belongs are shown It will be a thing. Here, the guide image shown in FIG. 3c and the guide image shown in FIG. 5d correspond to the same map display range. From both figures, it is understood that the prefectural border is highlighted by the boundary graphic 511 in the guide image (FIG. 5d) during the scroll display of the map.

  Then, during the period in which the center of the map display range thereafter is far from the prefectural border 520, the center of the map display range and the prefectural border 520 are within a predetermined distance (the map display range is set to 506). In addition to the cursor 510 on the normal guidance image shown in FIGS. 3b and 3c, the guidance image displayed during the period of time) is displayed on the map display range 506, as shown in the guidance image of FIG. A boundary graphic 511 representing the prefectural border, and a name 512 of the prefecture (here, the prefecture that entered the map display range as the map scrolls) to which the point corresponding to the center of the map display range belongs are represented. Become.

  Further, the guide image displayed during the period in which the center of the map display range is far from the prefectural border 520 and the center of the map display range is separated from the prefectural border 520 by a predetermined distance or more (period in which the map display range is set to 507) is As shown in the guide image of FIG. 5f displayed for the map display range 507, the cursor 510 is returned to the normal guide image shown in FIGS. 3b and 3c.

In the map scrolling process described above, instead of drawing the prefectural border in step 414, the guidance in which the area of the prefectural area where the point corresponding to the center of the map display area of the map image 321 does not belong is displayed in a weak tone. An image may be displayed.
That is, instead of the guide images shown in FIGS. 5d and 5e, as shown in FIGS. 5g and 5h, the region 530 of the prefecture where the point corresponding to the center of the map display range does not belong in the map image 321 A guidance image displayed in a weak tone may be displayed by reducing the display brightness of 530 or the like.

The embodiment of the present invention has been described above.
Thus, according to the present embodiment, when the display range of the map is likely to exceed the prefectural border by the scroll display of the map, the border of the prefectural government and the name of the prefectural government are displayed on the map. The user can be informed that the scrolling of the map has progressed to the vicinity of the prefectural border.
Therefore, from this presentation, the user can recognize that the scroll of the map has progressed to the vicinity of the prefectural border, and can correct this if the map display has been scrolled more than necessary. .

Incidentally, in the above embodiment, the map scroll process may be as shown in FIG.
That is, if the cursor 510 is displayed (step 602), the occurrence of the cursor movement operation (step 604) and the occurrence of the display return operation (step 606) are monitored, and if the display return operation occurs (step 606). ) The display of the cursor 510 is erased, the display range is returned to the display range based on the current position before the map scroll process is started (step 608), and the map scroll process is terminated.

  On the other hand, if a cursor movement operation has occurred (step 604), a prefectural border on the map image 321 exists within a predetermined distance from the center of the map display range (position where the cursor 510 is displayed), and , Whether the moving operation direction of the cursor 510 is the direction in which the center of the map display range (the position where the cursor 510 is displayed) approaches the prefectural border on the map image 321, while considering the map scale, By referring to the prefectural border data (step 610), if so, go to step 612, otherwise go to step 618. Here, in step 610, the prefectural border on the map image 321 exists in the map display range, and the moving operation direction of the cursor 510 is the center of the map display range (position where the cursor 510 is displayed). Is a direction approaching the prefectural border on the map image 321, if so, the process may proceed to step 612, and if not, the process may proceed to step 618.

When the process proceeds to step 618, the map display range is changed so that the center of the display range moves in the direction in which the cursor movement operation is accepted by a predetermined standard movement amount, and the guide image is updated. . Then, the process returns to the monitoring in steps 604-606.
On the other hand, when the process proceeds to step 612, the map display range is changed so that the center of the display range moves in the direction in which the cursor movement operation is accepted by a predetermined amount of low-speed scroll movement, and the guide image is updated. (Step 612). Here, the low-speed scroll movement amount is set to be smaller (for example, 1/2) than the standard movement amount for moving the map display range in step 618. Further, the low-speed scroll movement amount may be dynamically set according to the distance so that the lower the distance between the center of the map display range and the prefectural border on the map image 321 is, the smaller the distance is.

Then, as described above, the prefectural border and the name of the prefectural government are drawn on the map image 321 of the guide image by the guide image generating unit 17 (steps 614 and 616), and the process returns to the monitoring of steps 604 to 606.
A processing example of the map scroll processing shown in FIG. 6a is shown in FIG. 7a.
Now, it is assumed that there is a prefectural border as shown at 720 in FIG. 7a, and the movement operation of the user's cursor 510 is a movement operation in the 700 direction.
In this case, the map display range also moves in the 700 direction in accordance with the movement operation in the 700 direction. However, during the period in which the center of the map display range approaches the prefectural border 720, During the period when the prefectural border 720 is more than the predetermined distance (the period during which the map display range moves from 701 to 705), the map display range moves by the standard movement amount. become.

  On the other hand, after that, during the period when the center of the map display range approaches the prefectural border 720, the center of the map display range and the prefectural border 720 are closer than a predetermined distance (the map display range moves from 705 to 707). The map display range moves by a moving amount for low-speed scrolling that is smaller than the standard moving amount, so that the map display range moves at a lower speed than the predetermined moving speed that is the previous moving speed. Become.

Then, during the period when the center of the subsequent map display range is far from the prefectural border 720 (the period during which the map display range moves from 707 to 709), the map display range moves again by the standard movement amount. It moves at a predetermined moving speed.
Therefore, according to such map scroll processing, when the display range of the map is likely to exceed the prefectural border due to the scroll display of the map, the scroll speed of the map becomes slow. Therefore, from such a low-speed scroll display, the user can easily grasp that the scroll of the map has advanced to the vicinity of the prefectural border, and when the map display has been scrolled more than necessary. Can correct this.

Here, the map scroll process described above may be performed as shown in FIG.
That is, if the cursor 510 is displayed (step 652), the occurrence of the cursor movement operation (step 654) and the occurrence of the display return operation (step 656) are monitored, and if the display return operation occurs (step 656). ), The display of the cursor 510 is deleted, the display range is restored to the display range based on the current position before the map scroll process is started (step 658), and the map scroll process is terminated.

  On the other hand, when a cursor movement operation occurs (step 654), a prefectural border on the map image 321 exists within a predetermined distance from the center of the map display range (position where the cursor 510 is displayed), and , Whether the moving operation direction of the cursor 510 is the direction in which the center of the map display range (the position where the cursor 510 is displayed) approaches the prefectural border on the map image 321, while considering the map scale, By referring to the prefectural border data (step 660), if so, go to step 662, otherwise go to step 670. Here, in step 660, the prefectural border on the map image 321 exists in the map display range, and the moving operation direction of the cursor 510 is the center of the map display range (position where the cursor 510 is displayed). Is in a direction approaching the prefectural border on the map image 321, if so, the process may proceed to step 662, and if not, the process may proceed to step 670.

When the process proceeds to step 670, the map display range is changed so that the center of the display range moves in the direction in which the cursor movement operation is received by a predetermined amount of movement, and the guide image is updated. . Then, the process returns to the monitoring of steps 654-656.
On the other hand, when the processing proceeds to step 662, the map display range is changed so that the center of the display range moves in a direction in which the cursor movement operation is accepted by a predetermined movement amount, and the guide image is updated. . Then, as described above, the prefectural border and the name of the prefectural government are drawn on the map image 321 of the guide image by the guide image generating unit 17 (steps 664 and 666).

  Then, the sound output unit 18 outputs a caution sound having a pitch according to the distance between the center of the map display range and the prefectural border on the map image 321 (step 668), and the process returns to the monitoring of steps 654-656. . Here, the pitch according to the distance between the center of the map display range and the prefectural border on the map image 321 is higher as the distance between the center of the map display range and the prefectural border on the map image 321 is smaller. Determine to be. However, in step 668, the audio output unit 18 may output a caution sound having a volume corresponding to the distance between the center of the map display range and the prefectural border on the map image 321. In this case, This volume is determined so as to increase as the distance between the center of the map display range and the prefectural border on the map image 321 decreases.

  According to the map scroll processing shown in FIG. 6b, when the map display range moves and the distance between the center of the map display range and the prefectural border is equal to or less than a predetermined distance, the center of the map display range is A warning sound will be output until the boundary is exceeded. In addition, the caution sound becomes a sound with a higher pitch or volume, that is, a sound that calls stronger attention as the center of the map display range approaches the prefectural border.

  Therefore, according to such map scroll processing, when the display range of the map is likely to exceed the prefectural border due to the scroll display of the map, a predetermined caution sound is sent to the user near the prefectural border. It can be shown that the scroll of the map has advanced.

Therefore, from this presentation, the user can recognize that the scroll of the map has progressed to the border of the administrative boundary, and correct this if the map display has been scrolled more than necessary. it can.
In the above embodiment, the case where the prefectural border is used as the target boundary to call attention to the map scroll beyond the boundary has been described. However, instead of or in addition to the prefectural border, the municipal border / border Any administrative boundary such as the above may be used as a boundary to call attention to map scrolling beyond the boundary.

  DESCRIPTION OF SYMBOLS 1 ... Navigation apparatus, 2 ... Operation part, 3 ... Display apparatus, 4 ... Vehicle state sensor, 5 ... GPS receiver, 6 ... Speaker, 11 ... Map data storage part, 12 ... Current state calculation part, 13 ... GUI control part , 14 ... route search unit, 15 ... memory, 16 ... control unit, 17 ... guide image generation unit, 18 ... voice output unit, 321 ... map image.

Claims (11)

A map display device for displaying a map,
Scroll display means for performing scroll display for moving the display range of the map according to a user's scroll operation;
Boundary graphic display means for displaying a boundary graphic representing a portion of the boundary of the administrative boundary on the map on the map when the boundary of the administrative boundary exists in the display range during the scroll display A map display device comprising: The map display device according to claim 1,
When the boundary of the administrative boundary exists in the display range during the scroll display, the name of the administrative boundary including the point corresponding to the center of the display range is displayed in the center of the display range of the map. A map display device comprising administrative boundary name display means for displaying in an area corresponding to an administrative boundary including a point corresponding to. A map display device for displaying a map,
Scroll display means for performing scroll display for moving the display range of the map according to a user's scroll operation;
During the scroll display, the boundary of the administrative boundary exists in the display range, and the predetermined reference point in the display range determined with respect to the display range is displayed in a direction approaching the boundary direction of the administrative boundary. A map display device comprising scroll speed changing means for reducing the moving speed of the display range of the scroll means when the range is moved by the scroll means. A map display device for displaying a map,
Scroll display means for performing scroll display for moving the display range of the map according to a user's scroll operation;
During the scroll display, the boundary of the administrative boundary exists in the display range, and the predetermined reference point in the display range determined with respect to the display range is displayed in a direction approaching the boundary direction of the administrative boundary. A map display device comprising: a caution sound output means for outputting a predetermined caution sound when the range is moved by the scroll means. A map display device for displaying a map,
Scroll display means for performing scroll display for moving the display range of the map according to a user's scroll operation;
When a predetermined reference point within the display range that is determined with respect to the display range is being scrolled and is close to a boundary of the administrative boundary by a predetermined level or more, the boundary of the administrative boundary is displayed on the map. A map display device comprising boundary graphic display means for displaying a boundary graphic representing a portion within the display range. The map display device according to claim 5,
A point corresponding to the center of the display range is included when the predetermined reference point within the display range that is determined with respect to the display range is approaching the boundary of the administrative boundary more than a predetermined level during the scroll display. A map display device comprising: an administrative boundary name display means for displaying an administrative boundary name in a region of the map corresponding to the administrative boundary including a point corresponding to the center of the display range. A map display device for displaying a map,
Scroll display means for performing scroll display for moving the display range of the map according to a user's scroll operation;
A direction in which the predetermined reference point in the display range determined during the scroll display is determined with respect to the display range approaches the boundary of the administrative boundary and approaches the boundary of the administrative boundary. And a scroll speed changing means for reducing the moving speed of the display range of the scroll means when the display range is moved by the scroll means. A map display device for displaying a map,
Scroll display means for performing scroll display for moving the display range of the map according to a user's scroll operation;
A direction in which the predetermined reference point in the display range determined during the scroll display is determined with respect to the display range approaches the boundary of the administrative boundary and approaches the boundary of the administrative boundary. And a caution sound output means for outputting a predetermined caution sound when the display range is moved by the scroll means. The map display device according to claim 3, 4, 5, 6, 7 or 8,
The map display device, wherein the reference point is a center point of the display range. The map display device according to claim 3, 4, 5, 6, 7 or 8,
Cursor display means for displaying a cursor on the map;
The map display device, wherein the reference point is a point corresponding to a display position of the cursor. The map display device according to claim 1, 2, 3 or 4,
Current position calculating means for calculating the current position;
And a current position display means for displaying a current position mark indicating the current position on the map when the current position is included in the display range.