JP2002148058A - Navigation system, method of displaying map, and recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a navigation system from which the user can easily and visually obtain information, a method of displaying map, and so on. SOLUTION: This navigation system is constituted to correlate the scale of a map M displayed on a displaying section 12 to the set value of the number of spots on a spot list L which are to be displayed on the section 12 in parallel with the map M. When, for example, the user changes the number of the spots to be displayed on the section 12 through operation, the scale of the map M is automatically changed in an interlocking way with the operation. The system is also constituted to always display a map M containing the extent from its location P1 to a target spot P2 and, as the location P1 approaches the target spot P2, to automatically change the map M displayed on the section 12 to enlarged detailed maps in steps.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a navigation device, a map display method, and a storage medium.

[0002]

2. Description of the Related Art In recent years, GPS (Global
Positioning System (Global Positioning System) Navigation devices that can determine their own position and moving speed in real time using satellites have begun to be widely used for mounting on vehicles such as automobiles or for portable use. A navigation device or the like uses digitized map data, displays a map on a monitor based on the map data, and further displays a current position measured by GPS, a travel route for a guide, and the like on the map. Display them superimposed. In addition, there is a map which displays not only a normal map but also point information ahead in the traveling direction. For example, if you are driving on a highway,
A list of point information such as a service area and a parking area is displayed. In the case of a general road, an intersection name and the like are displayed in a list.

[0003]

By the way, when the user
When it is desired to obtain information further ahead in the traveling direction than the range of the map displayed at that time, the map can be scrolled or the display scale of the map can be changed. On the other hand, in the case of a list, if you want to obtain information further ahead in the traveling direction than the display range of the displayed list,
You have to scroll the list. If you scroll the list, you can only display the list in the range to which you scrolled. For this reason, it is difficult to grasp the positional relationship with the current position, it is difficult to obtain a sense of distance, and it is necessary to perform the scroll operation many times before grasping the positional relationship, and the operation becomes cumbersome. is there. In addition, there are also those that perform map display and list display at the same time, but as described above, the list is changed by scrolling the display range, so for example, even if the display scale of the map display is changed, The display of the list cannot be linked, and this is also inconvenient for the user.

Further, in the conventional navigation device, the map is automatically scrolled as its position moves, but the display scale remains fixed at the scale set by the user. ing. For this reason, for example, when it is desired to grasp the shape of an intersection at an intersection where the course is to be changed, the user may not be able to visually obtain information as it is while the wide area map is being displayed. In such a case, it is necessary to manually change the scale of the map to view a detailed map, and the operation may be troublesome. In addition, an enlarged map of an intersection may automatically pop up when approaching an intersection.However, such an enlarged map looks very different from a normally displayed map, and the display is switched. The user may feel uncomfortable.

[0005] The present invention has been made based on such technical problems, and it is an object of the present invention to provide a navigation device, a map display method, and the like in which information can be easily obtained visually.

[0006]

With this object in mind, the navigation apparatus of the present invention displays a map based on map data stored in data storage means and a point list based on point data on a display means. The present invention is characterized in that a display range of a map selected by the map display control means is associated with a display range in a spot list generated from spot data located in the traveling direction based on the current position measured by the positioning means. Thus, for example, when the display range in the point list is changed based on an input from the user, the map display range can be changed by changing the scale of the map in conjunction. Further, when the display range of the map is changed, the display range in the point list may be changed in conjunction with the change. By the way, the display range of the point list means a geographical range where points displayed in the point list exist. In order to change the display range of the map or the point list, it is conceivable to enlarge or reduce the geographic range to be displayed and to move the geographic range to be displayed. To enlarge or reduce the geographic range to be displayed, the scale of the map may be changed. When the display range is enlarged or reduced, the number of display points in the point list may be changed. If the number of points corresponding to the map display range is equal to or greater than the number of points displayed in the point list, priorities are set in advance for each point, and only points having a high priority are added to the point list. It can also be displayed. To move the geographical range to be displayed, the map or the point list may be scrolled and displayed.

According to the storage medium of the present invention, a process for displaying a map based on map data and a list generated based on point data by a stored program, and expanding a display range of either the map or the list. When the operation of reducing the size is performed from the outside, a process of expanding and reducing the display range of both the map and the list can be performed. Here, the term “external” refers to an input operation by a user. By causing a computer device such as a navigation device to execute such a program, a display in which the map and the display range of the list are always linked can be performed.

In the navigation apparatus according to the present invention, the map display control means sets a target point on the moving route set by the moving route setting means, and the current position and the target point measured by the positioning means are displayed in a display range. The map scale is selected so that the map is located within the map, and the map of the selected scale is displayed on the display means. According to such a navigation device, the display can be performed in a state where the current position and the target point are always positioned within the display range. Here, when selecting the scale, it is preferable to select the map of the scale with the highest magnification. It is effective to gradually enlarge the scale of the map as the current position approaches the target point. By the way, it is preferable to set, as the target point, a point where guidance information is output, among points located on the movement route. More specifically, for example, there are intersections that change the course, entrances / exits of expressways, and goal points that exist on the travel route set by the user. Also in such a navigation device, a list of points can be displayed together with the map, and when the scale of the map is changed, the display range in the list of points is changed to match the display range of the map. You may.

Further, the present invention is characterized in that as the current position measured by the positioning means approaches the target point set by the target point setting means, the scale of the map is gradually enlarged and displayed on the display means. It is also possible to grasp as a navigation device. In this case, both the target point and the current position need not necessarily be present in the display area of the display means. According to the map display method of the present invention, a current position is measured based on a signal transmitted from a GPS satellite, and the current position is displayed as the current position approaches a target point located on a movement route set by a user. The map may be gradually enlarged.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail based on an embodiment shown in the accompanying drawings. FIG. 1 is a block diagram for explaining the overall configuration of the navigation device according to the present embodiment. As shown in FIG. 1, the navigation device according to the present embodiment has a compact disc (CD) storing map data of a predetermined wide area.
ROM (Read Only Memory) and DVD (Digital Versati
le Disc) -a disk drive 11 equipped with a recording disk (data storage means, map data storage means) such as a ROM, a display section (display means) 12 comprising a monitor such as a liquid crystal display for displaying a map, and audio for guidance. , A control unit 15 such as a remote controller or a control panel, a control block 15 for controlling the entire system, and a positioning block 16 for performing positioning.

The control block 15 includes a CPU 20 for controlling the entire system and performing arithmetic processing, and a disk drive 11.
Storage control device 21 for controlling data and the like, display control device (target point setting means) 2 for controlling data displayed on the display unit 12
2. Guidance control device for controlling route guidance (moving route setting means, guidance information output means)
3. a voice control device 24 for controlling voice output from the speaker 13, an input control device 25 for controlling an input signal from the operation unit 14, a DRAM (Dynamic Random Access Memory).
y) Main memory 2 as an internal storage device composed of
6. It has a ROM 27 in which a predetermined program for operating the navigation device is stored. The positioning block 16 includes a GPS antenna 31 that receives a signal transmitted from a GPS satellite, and a GPS positioning unit (positioning means) 3 that performs positioning based on a signal obtained from the GPS antenna 31.
2. A vehicle speed sensor 33 for detecting a vehicle speed of a vehicle on which the navigation device is mounted, a gyro sensor 34 for detecting a rotational displacement of the vehicle, and a GPS positioning unit 32 based on detection values obtained by the vehicle speed sensor 33 and the gyro sensor 34. And a positioning correction unit 35 for correcting the positioning result.

The display control unit 22 includes a map display control unit (map display control unit) 28 for displaying a map on the display unit 12, and a list display control unit (list display control unit) for displaying a point list. 29. The map display control unit 28, as in a normal navigation device, uses a map based on map data stored on a recording disk held in the disk drive 11 and a positioning result (automatically) obtained by the positioning correction unit 35 of the positioning block 16. Position) is superimposed and displayed on the display unit 12. The map display control unit 28 sets the scale of the map displayed on the display unit 12. The map data stored on the recording disk stores map data of various scales. By operating the operation unit 14, the user can arbitrarily select the scale of the map data read from the recording disk, that is, the scale of the map to be displayed on the display unit 12. In the present embodiment, for example, 1
/ 6250, 1 / 12,500, 1/25000, 1/1
It is assumed that map data of a total of six scales of 00000, 1 / 250,000 and 1/500000 are stored.

FIG. 2 shows an example of the operation unit 14, and shows an external appearance of a remote controller 40 as the operation unit 14. The remote controller 40 is provided with a wide area / detail button (list changing means, map scale changing means) 41 for changing the scale of the map displayed on the display unit 12, and is provided on the "wide area" side or the "detail" side. By tilting, the scale is switched step by step. In addition, the remote controller 40 includes, for example,
A switching button 42 for switching the screen displayed on the display unit 12 between “one screen” and “two screens”, changing (scrolling) the display range of the map on the display unit 12, and moving a cursor in various operation menus and the like In order to move the joystick 43, at least a joystick 43 which can be tilted in at least four directions (in all directions in this case), a determination button 44 for performing a determination operation in a selected state (operating by pressing the joystick 43), and the like are provided. The remote controller 40 includes a transmitting unit 45 that wirelessly outputs a signal corresponding to the operation content by infrared rays or the like. The signal is received by a receiving unit (not shown) of the navigation device. Processing according to the operation content is executed.

The map display control unit 28 further superimposes the travel route set by the user on the map displayed on the display unit 12, as in a normal navigation device. This travel route indicates the route from the start point to the goal point set by the user. The data for displaying the movement route includes point data (point information) existing on the set movement route. Such point data is stored in advance on a recording disk, and for example, for an intersection, an expressway interchange (IC), a junction (JC), a service area (SA), a parking area (PA), etc. Has been granted. In addition to the position coordinates (latitude / longitude) on the map to be displayed, information on the point, for example, the name of the point (intersection name, IC name, etc.) is associated with the point data.

The list display control section 29 causes the display section 12 to display at least a spot list which is a list of spot names. This point list displays information such as names of interchanges, junctions, service areas, parking areas and the like while traveling on a highway, and displays intersection names and the like when traveling on a general road. In order to generate such a point list in the list display control unit 29, a moving route set by the user or a current position based on the own position (current position) obtained by the positioning correction unit 35 of the positioning block 16 is used. It follows the traveling route on which it is traveling forward in the traveling direction. Then, point data having position coordinates (latitude / longitude) overlapping the moving route is picked up as point data existing on the moving route. Then, when the picked-up spot data reaches a preset number, a spot list is generated from information based on the picked-up spot data. Then, the data of the generated point list is stored in the main memory 26 and displayed on the display unit 12. At this time, the set number of point data to be picked up is increased or decreased by the user switching the wide area / detail button 41 of the remote controller 40. Here, as an example of the set number of point data to be picked up, that is, the maximum value of the number of points displayed in a list on the display unit 12, 3, 4, 5, 6, 8
・ It is set to 6 levels of 10.

A map displayed by the map display control unit 28;
The point list displayed by the list display control unit 29 can be switched by performing a predetermined operation with the remote controller 40.
Also, the switching button 42 of the remote controller 40
By operating the display unit, as shown in FIG.
Alternatively, a so-called “two-screen” display in which the map M and the point list L are displayed side by side may be used. In the navigation device of the present embodiment, in the state where the map M displayed by the map display control unit 28 and the point list L displayed by the list display control unit 29 are displayed on the display unit 12 in “two screens”, When the user operates the wide area / details button 41, the scale of the map M and the number of displayed points of the point list L are changed in conjunction with each other. For this reason, as shown in FIG. 4, the scale of the map data stored on the recording disk and the number of display points of the point list L are associated in advance. Here, the scale of the map data and the number of points to be displayed in the point list L are determined based on the map data on the display unit 1.
2 and the geographical range of the map M displayed in FIG.
The geographical area where the point indicated by exists,
Basically, they are associated so as to substantially match.

FIG. 5 shows a map M and a point list L.
And the flow of processing when the user changes the set value of the number of displayed points in the point list L is shown. Here, the user operates the wide area / detail button 41 of the remote controller 40 to
It is assumed that an initial value of the number of points to be displayed in the point list L is set. As shown in FIG. 5, in the navigation device, first, the positioning correction unit 3 of the positioning block 16
5, the data of the own position is acquired. Further, by the positioning in the positioning correction unit 35 which is repeated every predetermined time,
If the data of the own position is obtained twice or more, the traveling direction of the own vehicle can be obtained (step S101). Subsequently, the route on which the vehicle is traveling is determined based on the own position and traveling direction acquired in step S101, the route set by the user, and the like (step S102).

In step S103, the input control device 25 checks whether or not the user has performed an operation to change the setting of the number of display points in the point list L. If the change operation has not been detected, the point data is picked up in step S104. At this time, the movement route R set by the user based on the own position and the traveling direction acquired in step S101 (see FIG. 3).
From its own position toward the front in the traveling direction, and picks up point data existing on the movement route R. Next, in step S105, the number of point data picked up is counted, and if the number has not reached the preset number, the process returns to step S104, and further follows the movement route R further forward in the traveling direction, and Repeat data pickup. Then, when the number of picked-up spot data reaches a preset number, stop picking up spot data,
Based on the spot data picked up until then, a spot list L to be displayed on the display unit 12 is generated (step S106). The data of the generated point list L is stored in the main memory 26 (step S107).
Subsequently, the map display control unit 28 selects a scale (see FIG. 4) of the map M corresponding to the number of display points in the set point list L (step S108). Thereafter, the map data of the selected scale is read out from the recording disk, stored in the main memory 26, and the map M based on the map data is displayed on the display unit 12. At the same time, the list display control unit 29 displays the point list L based on the generated data on the display unit 12 (Step S).
109). As a result, the map M and the point list L are simultaneously displayed on the display unit 12, and in this state, the scale of the map M and the number of display points of the point list L are associated with each other. , Display range by map M,
The display range of the point list L, that is, the range in which the points displayed in the point list L exist, substantially coincides with each other.

By the way, in step S103, when it was confirmed whether or not the user changed the setting of the number of display points of the point list L by the wide area / detail button 41, the change operation was detected. In this case, the process proceeds to step S110, and the set value of the number of display points in the point list L is changed. Wide area of the remote controller 40
If the detail button 41 is tilted to the "wide area" side, the number of display points is increased by one step from the set value at that time in FIG. , The number of display points is reduced by one step from the set value at that time. After changing the set value of the number of display points in the point list L in this way, the processes of steps S104 to S107 are performed as described above. Of course, in step S105, the set value of the destination point list L has been changed. Also, in step S108, when selecting the scale of the map M, the map M corresponding to the set value of the number of display points of the changed point list L in the correspondence of FIG.
Is selected.

As a result, in the point list L displayed on the display unit 12 in step S109, the number of display points is changed in accordance with the operation of the user, and the map M displayed on the display unit 12 alongside the list is also changed. The scale is changed in conjunction with the point list L. 3 and 6 show an example of a screen display when the number of display points of the point list L is changed by the above operation. FIG. 3 shows a state before the change, for example, when the number of display points of the point list L is three. Screen display in case of
FIG. 6 shows a screen display when the number of display points in the point list L is seven as a result of performing the operation of changing the number of display points a plurality of times in the state after the change. As shown in this figure, by performing the operation of changing the number of display points, the number of points displayed in the list and the scale of the map M are changed in conjunction with each other, thereby displaying the map M displayed on the display unit 12. The range and the range of the point displayed on the point list L are changed. For example, by changing the display content on the display unit 12 from the state shown in FIG. 3 to the state shown in FIG.
The display range of the map M and the point list L is shifted to the wide area side.

FIG. 7 shows the flow of processing when the user changes the scale of the map M. As shown in FIG. 7, in the navigation apparatus, first, the positioning correction unit 35 of the positioning block 16 acquires the own position and the traveling direction (step S201). Subsequently, the route on which the vehicle is traveling is determined based on the own position and traveling direction acquired in step S201, the movement route R set by the user, and the like (step S202).

Then, in step S203, the input control device 25 checks whether or not the user has performed an operation to change the scale of the map M. If a change operation has been detected, the display scale of the map M is changed in step S204. In step S204, if the wide area / detail button 41 of the remote controller 40 is tilted to the "wide area" side, in FIG. 4, the scale is changed by one step from the scale at that time, and the map M of the wider area is displayed.
Is displayed (shift to the lower side in FIG. 4), and if the tilt operation is performed to the “details” side, the scale is changed by one step from the scale at that time and a more detailed map M is displayed (FIG. 4 to the upper stage). With the scale change of this map M,
The set value of the number of display points in the point list L is also changed. That is, with the change in the scale of the map M, the set value of the number of display points of the point list L is increased or decreased by one step based on the correspondence shown in FIG. Thereafter, step S20
Move to 5. If the operation of changing the scale of the map M is not detected in step S203, the process directly proceeds to step S205.

In step S205, the list display control section 29 traces the moving route R set by the user from the self-position to the front in the moving direction based on the self-position and the moving direction acquired in step S201. The point data existing on the route R is picked up. Next, in step S206, the number of picked-up spot data is detected, and if the number has not reached the preset number, the process returns to step S205, and
The traveling route R is further traced forward in the traveling direction, and the pickup of the point data is repeated. Then, when the number of picked-up spot data reaches a preset number, the pick-up of the spot data is stopped. Then, based on the picked-up spot data, the display unit 1
2 is generated (step S).
207), the data is stored in the main memory 26 (step S208), and the map M based on the selected scaled map data and the generated point list L are displayed side by side on the display unit 12 (step S209). . As a result, the map M displayed on the display unit 12 in step S209 has its scale changed according to the operation of the user,
The point list L displayed on the display unit 12 along with this is also
The number of display points is changed in conjunction with the change in the scale of the map M. Also in this case, the screen displayed on the display unit 12 changes from the state shown in FIG. 3 to the state shown in FIG. 6, similarly to the example of the screen display shown in FIGS. become.

The processing shown in FIG. 5 and FIG.
This processing is performed when the user performs an operation of changing the number of display points of the point list L and the scale of the map M. Next, in the navigation device, the moving route R set by the user
When performing navigation actions based on
FIG. 8 shows a process of automatically changing the number of display points of the point list L and the scale of the map M with the movement of the own position.
This will be described with reference to FIG. First, the own position is acquired by the positioning correction unit 35 of the positioning block 16 (step S3).
01). Subsequently, based on the acquired own position, the traveling direction and the route on which the own vehicle is traveling are determined.

Subsequently, the display control device 22 traces the movement route R set by the user from the self-position to the front in the traveling direction based on the self-position and the moving direction acquired in step S301, A target point is set, and point data of the target point is picked up (step S302). Here, the target point may be, for example, a goal point of the moving route R set by the user, an intersection or a branch point where the course should be changed on the moving route R, an interchange that gets on and off the expressway, and the like. These target points are, in other words, the guidance control device 23.
, From the voice control device 24 and the speaker 13,
This is the point where the voice guidance is output.

The map display control unit 28 selects a scale of the map M to be displayed on the display unit 12 based on the own position and the target point. For this, among the maps M that can be displayed so that both the own position and the target point are included in the display area of the display unit 12, the scale of the most detailed map M (closer to the upper side in FIG. 4) is selected. (Step S303). Step S3
02, the other point data (point data of a point other than the target point) is picked up before the point data of the target point is picked up from the own position. , A point list L to be displayed on the display unit 12 is generated (step S304). At this time, the number of display points in the point list L is set to a numerical value corresponding to the scale of the map M selected in step S303 (see FIG. 4). After the data of the generated point list L is stored in the main memory 26 (step S305), the map M based on the selected scale map data and the generated point list L are displayed on the display unit 12 side by side. Yes (Step S3
06). As a result, the display unit 12 displays the most detailed map M among the ones including the self-position to the target point, and also displays the point list L in the display area set according to the scale of the selected map M. It will be displayed in points.

Thereafter, each time the self-position is periodically acquired, it is determined in step S307 whether or not the self-position has reached the target point. Is repeated. At this time, as long as the scale of the map M selected in step S303 is not changed by the movement of the own position, it is not necessary to generate the point list L in step S304. In this case, the point list L based on the data stored in the main memory 26 may be displayed on the display unit 12. When the self-position moves, the self-position and the target point gradually approach. Thereby, at some point, step S303
Is changed from the scale selected so far, that is, the map M is changed to a more detailed map M. Then, at this time, the set value of the number of display points in the point list L is changed corresponding to the scale of the map M selected in step S303. And step S
At 304, a point list L is generated based on the changed set value of the number of displayed points. Thereby, step S3
At 06, the map M displayed on the display unit 12 is one step more detailed than the map M displayed so far, and the point list L displayed side by side is also
The number of display points is changed. As a result, the display ranges of both the map M and the point list L change in conjunction with each other.

As described above, as the own position approaches the target point, the map M displayed on the display section 12 is gradually changed to a detailed one, and the point list L displayed therewith is automatically displayed in the display range. Will change sequentially. 9 to 11 show examples of screen display on the display unit 12 when the above-described processing is performed. The user can change the screen display shown in FIG. 9 to FIG. 10 and FIG. When the own position (current position) P1 gradually approaches the “Shinko Minamibashi” intersection, which is the target point P2, along the moving route R, the map M displayed is gradually switched to a detailed one. Accordingly, a state in which the display range automatically changes sequentially in the displayed point list L is also shown. When the self-position P1 reaches the target point P2, the setting of the target point P2 is updated to the next target point, and thereafter, the same processing as described above may be repeated.

According to the navigation apparatus described above, the scale of the map M displayed on the display unit 12 and the set value of the number of display points of the point list L displayed alongside the map M are associated with each other. The display ranges of the map M and the point list L are always substantially the same. Thus, for example, if the user performs an operation of changing the scale of the map M displayed on the display unit 12, the number of display points in the point list L is automatically changed in conjunction with the change in the scale of the map M. .
In addition, a point list L displayed by the user on the display unit 12
When the operation of changing the number of display points is performed, the scale of the displayed map M is automatically changed in conjunction with the operation. In this manner, when the wide area map M is displayed, the wide area point list L is displayed, and when the detailed map M is displayed, the corresponding point list L can be displayed. as a result,
From the user's point of view, there is no need to separately operate the map M and the point list L as in the related art, and the operation is easy, and the displayed map M and the point list L always correspond to each other. It is easy to grasp the positional relationship between the position and the position ahead in the traveling direction and the sense of distance, and it is possible to use the navigation device without feeling uncomfortable.

Further, in the above navigation device, for example, a point where voice guidance is performed is set at a target point P2.
And the most detailed map M is selected from the maps M including the range from the own position P1 to the target point P2 and is displayed on the display unit 12. As a result, the map M displayed on the display unit 12 becomes progressively more detailed as the own position P1 approaches the target point P2 while the own position P1 and the target point P2 are always displayed in the display area of the display unit 12. Automatically changes to something. As a result, for the user, the map M becomes gradually closer to the target point P2 such as an intersection.
Will be enlarged and switched to detailed ones,
It is easy to grasp information visually. Furthermore, always the target point P
Since it is possible to see the map M with 2 in the field of view, it is easy to grasp information ahead in the traveling direction. In addition, since the number of displayed points in the point list L displayed together with the map M automatically changes sequentially, it is easy to grasp information at this point.

In the above embodiment, the point list L displayed on the display unit 12 follows the movement route R and picks up all point data until the set value of the number of displayed points is reached. However, the present invention is not necessarily limited to this. For example, it is also possible to associate the data of the priority at the time of displaying on the display unit 12 with the point data of each point, and to list only the points of high priority. FIG. 12 shows an example of priority data. As shown in this figure, for example, in the case of a highway, ICs are ranked in a plurality of stages (I1 to I3) in the order of the number of users, or SAs and PAs, which are rest facilities, are ranked ( A1, A2). Also,
Also on general roads, priority is set by ranking according to various criteria, such as intersections with national roads and intersections with prefectural roads. The priority may be set based on any criteria, and is not limited to the example shown in the present embodiment. Then, in order to generate the point list L, follow the movement route R, and when picking up point data to the target point, when the point data is equal to or more than the set number of display points in the point list L For example, based on priority data associated with each point data, only high-priority point data is picked up and other map data is skipped. As a result, as shown in FIG. 13, when displaying a wide area list L such as Tokyo IC to Nagoya IC, for example, instead of displaying all the ICs for the set value of the number of display points from the Tokyo IC side, Tokyo IC is displayed. IC
A list of the outlines from Nagoya IC to Nagoya IC can be displayed. Thereby, especially when displaying the map M of a wide area,
The display range of the map M and the display range of the location list L can be matched even when the number of locations to be displayed in the city center or the like is large. FIG. 13 is an example of a list display, and the display of the map M is omitted.

In the above-described embodiment, the number of display points in the point list L is changed in order to change the display range in the point list L by a user's operation, a process at the time of executing navigation, and the like. It is not always necessary to change the number of display points. Further, the number of display points in the point list L changes according to the change in the scale of the map M. However, the range (display range) of the points displayed in the point list L according to the change in the scale of the map M changes. If it changes, the number of display points in the point list L can be fixed. In such a case, according to the display range of the point list L to be displayed,
The point list L may be displayed in the descending order of the priority using the data of the priority as described above.

Incidentally, the flow of the processing described in the above embodiment is merely an example, and if the same processing can be performed, there is no problem even if the order and the like are changed. In the above embodiment, the case where the map M and the point list L are displayed at the same time has been described as an example. However, the case where only the map M is displayed may be used. By sequentially switching the map M to a more detailed one as approaching P2, it is possible to obtain an effect that the user can easily grasp information as described above.

Further, a program for performing a process for linking the display of the map M and the display of the point list L as described in the above embodiment, and a process for gradually expanding and displaying the map display as the user approaches the target point P2 May be in the form of the following storage medium and program transmission device. That is, as a storage medium, the above-described program may be stored in a storage medium such as a CD-ROM, a DVD, various memories including a semiconductor memory, a hard disk, or the like so as to be readable by a computer device such as a navigation device. In addition, the program transmission device includes a storage unit such as a CD-ROM, a DVD, a semiconductor memory, or a hard disk that stores the above-described program, and reads the program from the storage unit and executes the program. On the side of the device to be connected, or the Internet or LAN
And a transmission means for transmitting the program via a network such as the above. Such a program transmission device is suitable for installing a program for performing the above-described processing in a navigation device or the like. In addition, the configuration described in the above embodiment can be selected or changed to another configuration as appropriate without departing from the gist of the present invention.

[0035]

As described above, according to the present invention,
For the user, it is possible to easily grasp information from the displayed map or the point list.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a navigation device according to the present embodiment.

FIG. 2 is a diagram illustrating an example of a remote controller.

FIG. 3 is a diagram showing an example of a screen display, which is a screen before changing the number of display points of the point list and the scale of the map;

FIG. 4 is a diagram showing an example of correspondence between the scale of a map and the number of display points in a point list.

FIG. 5 is a diagram showing a processing flow when an operation of changing the number of display points in the point list is performed.

FIG. 6 is a screen in a state after changing the number of displayed points of the point list and the scale of the map from the state of FIG. 3;

FIG. 7 is a diagram showing a processing flow when an operation of changing the scale of the map is performed.

FIG. 8 is a diagram showing a flow of a process of increasing the scale of the map display as the user approaches the target point.

9 is an example of a screen display when performing the processing shown in FIG. 8, and is a diagram showing a screen in a state before changing the number of display points of the point list and the scale of the map.

FIG. 10 is an example of a screen display subsequent to FIG. 9, showing a screen in a state in which a target point is approached, the number of display points in a point list and the scale of the map are changed.

11 is an example of a screen display subsequent to FIG. 10, showing a screen in a state in which the target point is further approached, and the number of display points in the point list and the scale of the map are changed. FIG.

FIG. 12 is a diagram illustrating an example of a case where priorities are set for point data.

FIG. 13 is a diagram showing an example of a point list generated according to priority.

[Explanation of symbols]

12 display unit (display unit), 14 operation unit, 15 control block, 32 GPS positioning unit (positioning unit), 22 display control unit (target point setting unit), 23 guidance control unit (moving route setting) Means, guidance information output means), 28... Map display control section (map display control means), 2
9 ... List display control unit (list display control means), 40 ...
Remote controller, 41: wide area / detail button (list change means, map scale change means), L: point list, M
… Map, P1… Local position (current position), P2… Target point,
R: travel route

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI theme coat ゛ (reference) G09B 29/00 G09B 29/00 A 29/10 29/10 A F term (reference) 2C032 HB02 HB15 HB22 HC08 HC15 HC24 HC26 HC31 HD03 HD16 2F029 AA02 AB01 AB07 AB13 AC02 AC08 AC09 AC16 AD07 5B075 PP10 PQ02 PQ49 UU13 5H180 AA01 CC12 FF04 FF05 FF22 FF32 FF36

Claims (10)

[Claims] 1. A positioning means for positioning a current position based on signals transmitted from a plurality of GPS satellites, map data for displaying a map of a plurality of different scales, and a map displayed on the map data. Data storage means for storing point data related to points existing in the map; a map based on the map data stored in the data storage means; and a display means for displaying a point list based on the point data; and a map based on the map data. Map display control means for selecting the scale and display range of the map, and displaying the map on the display means, and extracting the point data located in the traveling direction with reference to the current position measured by the positioning means, from the point data. List display control means for generating a point list and causing the display means to display the list, and selecting the map list by the map display control means. Navigation apparatus characterized by a display range of the map, and display range at said point list displayed by said list display control means are associated. 2. The apparatus according to claim 2, further comprising: a list changing unit configured to change a display range of the point list displayed on the display unit based on an input from a user. 2. The navigation device according to claim 1, wherein when the display range is changed, the display range of the map is changed by changing the scale of the map in conjunction with the scale. 3. A map scale changing means for changing a scale of the map to be displayed on the display means based on an input from a user, wherein the list display control means includes a map scale changing means for changing the scale of the map by the map scale changing means. 2. The navigation device according to claim 1, wherein, when is changed, the display range in the point list is changed in association with the change. 4. A positioning means for measuring a current position based on signals transmitted from a plurality of GPS satellites; a map data storage means for storing map data; and a map data storage means for storing the map data. Display means for displaying a map based on the information; moving route setting means for setting a moving route by a user; setting a target point on the moving route set by the moving route setting means; and positioning by the positioning means. The scale of the map is selected such that the current position and the target point are located within the display range, and the map of the selected scale is displayed on the display means based on the map data stored in the map data storage means. A navigation device, comprising: a map display control means for displaying. 5. The navigation device according to claim 4, wherein the map display control means gradually increases the scale of the map as the current position measured by the positioning means approaches the target point. . 6. A data storage unit for storing point data relating to a point existing on the map, and a guidance information output unit for outputting guidance information at a predetermined point on the moving route according to the moving route. The navigation apparatus according to claim 4, wherein the map display control means sets a point where the guidance information is output, among points located on the movement route, as the target point. 7. A list display control means, further comprising: a list display control means for generating a list of points located ahead of the traveling direction based on the current position measured by the positioning means and displaying the list on the display means. Is characterized in that when the scale of the map is changed by the map display control means, the display range in the list of points generated by the list display control means is changed to match the display range of the map. The navigation device according to claim 4, wherein 8. Positioning means for positioning the current position based on signals transmitted from a plurality of GPS satellites, map data storage means for storing map data, and display means for displaying a map based on the map data. A target point setting means for setting a target point in the traveling direction; and as the current position measured by the positioning means approaches the target point set by the target point setting means,
A map display control means for gradually increasing the scale of the map and displaying the map on the display means. 9. A method of selecting one scale from a plurality of scales and displaying a map of the selected scale on a monitor based on map data, wherein a current scale is selected based on a signal transmitted from a GPS satellite. A map display method comprising: measuring a position, and gradually expanding a map to be displayed as the current position approaches a target point located on a movement route set by a user. 10. A storage medium in which a program to be executed by a computer is stored so as to be readable by the computer, wherein the program reads out map data and point data and generates a map based on the map data and a map based on the point data. Processing for displaying a list to be displayed, and when an operation of enlarging / reducing the display range of either the map or the list is performed from outside, the display range of both the map and the list is enlarged / reduced.
And causing the computer to execute a reduction process.