JP5230281B2 - Map hierarchy notification method, map hierarchy notification program, and map hierarchy notification system - Google Patents

Description

  The present invention relates to a map hierarchy notification method, a map hierarchy notification program, and a map hierarchy notification system.

Currently, a map information providing service provided on the Internet or the like provides map information together with functions such as scale change and screen transition by scrolling. In general, map information is created as a raster image, classified for each of a plurality of scales, and stored in a map information providing server that provides a map information providing service. The classification information indicating the scale of the map information is referred to as “map hierarchy”.
Then, the map information providing server provides the user with the map information selected from the appropriate map hierarchy according to the latitude / longitude information and the scale information transmitted from the user terminal.

  In addition, the map information provision server maintains a detailed map for urban areas, but the number of map hierarchies to be maintained according to the target area of the map display so that only a wide-scale map is prepared for mountain maps. Is different. Therefore, when the user scrolls or changes the scale and arbitrarily uses the map information, the map information providing server may not have a map hierarchy corresponding to the latitude / longitude information and the scale information transmitted from the user terminal. For this reason, when accessing a map hierarchy where map information is not maintained, the map information providing server notifies the user terminal that the map information is not maintained, and the user terminal “no map exists at that location” or the like. Message appears on the screen. As described above, when a map hierarchy in which map information is not maintained is accessed and the maintenance map is not displayed, the user needs to manually access the map hierarchy in which the map information is maintained.

  In a scroll map, in order to provide information appropriately according to the map scale, the map information includes positional information by characters, expression methods such as roads and railways, existence of building shapes, existence of colors to paint the background, existence of shading, etc. Different for each scale. Therefore, a map information display device has been proposed in which the visibility and convenience of the character display is improved by enlarging and displaying the character display of the position information on the first layer when the map is scrolled. (Patent Document 1 below).

JP 2003-172623 A

  The display device of the above document provides map information by changing to the character display of the map by scrolling the map, but there is no description on how to handle undeveloped map information as a result of scrolling or changing the scale. .

  In view of the above problems, an object of the present invention is to provide a method or apparatus for notifying a user of a map hierarchy in which map information is maintained when the user uses a map hierarchy that is not maintained on the server side.

  In order to solve the above problems, a map hierarchy notification method, a map hierarchy notification program, or a map hierarchy notification method system described in (1) to (11) below is provided.

(1) A map hierarchy notification method for notifying a terminal connected to a network having a storage unit to a map hierarchy of a maintenance map,
Transmitting the position coordinates on the map from the terminal to the server;
The server searches for a rectangle or a polygon containing the position coordinates from the storage unit storing a plurality of rectangles or a plurality of polygons defining the range of the maintenance map for each map hierarchy;
The server storing a map hierarchy of a maintenance map whose range is defined by a rectangle or polygon that includes the position coordinates inside;
Notifying the terminal of the map hierarchy of the maintenance map from the server;
A map hierarchy notification method comprising:

  (2) The map hierarchy notification method according to (1), further including a step of switching the display to a map included in the notified map hierarchy at the terminal after the notification of the map hierarchy of the maintenance map.

(3) The notifying step of the maintenance map includes a step of notifying that there is no map hierarchy when there is no maintenance map whose range is defined by a rectangle or polygon that includes the position coordinates of the map.
The map hierarchy notification method according to (1), further including a step of stopping a screen transition to a map corresponding to the position coordinates at the terminal when the terminal is notified that there is no map hierarchy.

(4) The server stores, for each map type, a plurality of rectangles or a plurality of polygons defining the maintenance map range,
The step of notifying the map hierarchy of the maintenance map includes the step of notifying the terminal of the map hierarchy of the maintenance map for each type of the map,
The map hierarchy notification method according to (1), further including a step of switching the display to a map of the map hierarchy of the maintenance map at the terminal after notification of the prepared map hierarchy for each type of map.

  (5) The map hierarchy notification method according to (1), further including a step of displaying a list of map hierarchies of the maintenance map on the terminal.

(6) A server having a communication unit and a storage unit and connected to the terminal via a network,
A position coordinate reception control unit that receives the position coordinates of the map from the terminal via the communication unit;
A rectangle or a polygon search unit for searching for a rectangle or a polygon containing the position coordinates of the map from the storage unit storing a plurality of rectangles or a plurality of polygons defining the range of the maintenance map for each map hierarchy;
A map hierarchy storage control unit for storing a map hierarchy of a maintenance map whose range is defined by a rectangle or polygon that includes the position coordinates of the map inside;
A program that causes the terminal to function as a map layer transmission control unit that transmits a map layer of the maintenance map via the communication unit.

(7) A map hierarchy notification system having a terminal having a communication unit, and a server having a communication unit and a storage unit, and notifying a network hierarchy of the maintenance map to the network-connected terminal,
The server
A position coordinate reception control unit that receives the position coordinates of the map from the terminal via the communication unit of the server;
A rectangle or a polygon search unit for searching for a rectangle or a polygon containing the position coordinates of the map from the storage unit storing a plurality of rectangles or a plurality of polygons defining the range of the maintenance map for each map hierarchy;
A map hierarchy storage control unit for storing a map hierarchy of a maintenance map whose range is defined by a rectangle or polygon that includes the position coordinates of the map inside;
A map hierarchy notification system, comprising: a map hierarchy transmission control unit that transmits the map hierarchy of the maintenance map to the terminal via the communication unit of the server.
(8) The terminal further includes a map display switching control unit that switches the display to the map information of the map hierarchy of the maintenance map at the terminal after receiving the map hierarchy of the maintenance map at the terminal. The described map hierarchy notification system.

(9) If there is no maintenance map whose range is defined by a rectangle or polygon that includes the position coordinates of the map inside, the map hierarchy transmission control unit transmits no map hierarchy information to the terminal,
The map hierarchy notification according to (7), further comprising: an undeveloped map movement control unit that stops screen transition to a map corresponding to the position coordinates at the terminal when the map hierarchy absence information is transmitted to the terminal. system.

(10) The server stores, for each map type, a plurality of rectangles or a plurality of polygons that define the maintenance map range for each map hierarchy,
The map hierarchy transmission control unit transmits the map hierarchy of the maintenance map to the terminal for each type of the map,
The terminal further includes a map type switching control unit that switches a display to a map of the map hierarchy of the maintenance map after receiving the prepared map hierarchy for each type of the map, the map hierarchy notification according to (8) system.

(11) When the map information displayed on the terminal moves to an undeveloped map range, the map hierarchy transmission control unit transmits the position coordinates of the map from the terminal to the server,
The map hierarchy notification system according to (7), wherein the terminal further includes a map hierarchy display control unit that displays a list of map hierarchies of the maintenance map on the terminal.

  This map hierarchy notification method, map hierarchy notification program, or map hierarchy notification method system searches for a rectangle or polygon that contains the latitude and longitude of the map from a plurality of rectangles or polygons that define the range of the maintenance map. The maintenance map including the latitude and longitude of the map can be notified to the terminal.

Hereinafter, embodiments will be described with reference to the drawings.
An outline of the map hierarchy notification system will be described with reference to FIG. The map hierarchy notification system 5 includes a map hierarchy notification server 10 and a terminal 50. As illustrated, the map hierarchy notification server 10, the terminal 50, and the map information providing server 70 are connected via the network 7 so as to be accessible to each other.

The map hierarchy notification server 10 includes a processing unit 20 including a single or a plurality of CPUs (Central Processing Units) and memories (SRAM, DRAM, etc.), a storage unit 30 such as a nonvolatile semiconductor memory, a hard disk device, and an optical disk device, and a NIC. It has a communication unit 40 such as a (Network Interface Card), and is configured to transmit and receive various data to the terminal 50 and / or the map information providing server 70 via the network 7 using a known protocol such as HTTP. ing.
Further, the storage unit 30 stores at least a program for controlling operations in the map hierarchy notification server 10. In addition, when the processing unit 20 executes the program stored in the storage unit 30, the processing unit 20 includes a position coordinate reception control unit 21, a polygon search unit 22, a rectangular search unit 23, a map hierarchy storage control unit 24, And it can function as the map hierarchy transmission control part 25. FIG.

  The storage unit 30 stores various data used by the processing unit 20. For example, a program (operating system, application, etc.) for executing a series of processes for realizing the functions of the control units 21 to 25, firmware, and a plurality of polygons that define the range of the maintenance map are provided. A polygon DB 32 for storing each map hierarchy and a rectangle DB (database) 34 for storing a plurality of rectangles defining the range of the maintenance map for each map hierarchy are stored. A program for realizing the functions of the control units 21 to 25 can be described using, for example, a JAVA (registered trademark) servlet.

The terminal 50 is a computer, and includes a display unit 57 such as a liquid crystal display, an operation unit 58 such as a keyboard and a mouse, a processing unit 51 including a CPU and a memory, a storage unit 56 such as a hard disk, and a communication unit 59 such as a NIC. And is configured to be able to transmit and receive various data to the map hierarchy notification server 10 using the network 7.
The terminal 50 is installed with a Web browser for accessing a Web page on the Web site. The terminal 50 may be a personal computer, a browser phone, or a PDA (Personal Digital Assistance). In FIG. 1, one terminal 50 is shown, but the number is not limited to this number, and there may be a plurality of terminals.

  Further, the processing unit 51 and the storage unit 56 store at least a program for controlling the operation in the terminal 50. Further, the processing unit 51 executes a program stored in the storage unit 56 to thereby execute a map display switching control unit 52, an undeveloped map movement control unit 53, a map type switching control unit 54, and a map hierarchy display control unit 55. Can function as.

  The storage unit 56 stores various data used by the processing unit 51. For example, the processing unit 51 stores a program (operating system, application, etc.) and firmware for executing a series of processes for realizing the functions of the control units 52 to 55. Further, since a Web browser is installed in the terminal 50, a program for realizing the functions of the control units 52 to 55 can be described by, for example, a JAVA (registered trademark) script.

  When the keypad is operated by the user, the input unit 58 generates a signal corresponding to the operation content and inputs the signal to the processing unit 51 as a user instruction. The display unit 57 displays text or an image corresponding to the signal supplied from the processing unit 56.

The map information providing server 70 includes a processing unit 71 including a CPU, a memory and the like, a storage unit 73 such as a hard disk, and a communication unit 79 such as a NIC, and the map hierarchy notification server 10 and / or the terminal using the network 7. 50 can transmit and receive various data.
The processing unit 71 functions as the scroll map providing unit 72, and in response to the transmission of the latitude / longitude information from the terminal 50, the processing unit 71 converts the scroll map to a protocol such as HTTP using the map DB 74 stored in the storage unit 74. Can be provided through.
In the present embodiment, the map information providing server 70 is shown as a device separate from the map hierarchy notification server 10, but the map hierarchy notification server 10 includes a map DB 74 and a scroll map providing unit 72, and It may function as the information providing server 70. In such a case, processing executed by the map providing information server 70 described later is executed by the map hierarchy notification server 10.

An example of rectangular data prepared for each scale and an example of rectangular data defined in the rectangle DB will be described with reference to FIG. 2A.
The rectangular data 84 shown in FIG. 2A is data having a coordinate position indicating a distance projected from the projection origin by a projection method (Mercurtle projection method or the like), and a rectangular width and height. The coordinate position of the rectangular data is set on a plane rectangular coordinate with an arbitrary line (for example, meridian) passing through the projection origin as the X axis, and taking the Y axis in a direction perpendicular to the X axis. Vertical or horizontal position. The size of the rectangular data is defined by a size (for example, width 200 pixels × height 100 pixels) defined by a reduced scale (for example, 1 / 25,000).
By defining the coordinate position and size of the rectangular data in this way, the rectangular data defines a prepared map area.
In addition, it is preferable to create rectangular data having the same size and position as the map information, together with the preparation of the prepared map information.

A point 85 indicates the latitude and longitude of the map transmitted from the terminal 50 shown on the plane rectangular coordinates. The rectangle search unit 23 calculates an internal area on the coordinates of the rectangle defined by the rectangle data (coordinate position, width and height of the rectangle), and performs an inside / outside determination of the latitude / longitude point 85 with respect to the internal area. The rectangular data including the point 85 in the internal area can be searched (for example, the rectangle 84 shown in the figure).
Also, the rectangular data in the rectangular DB shown in FIG. 2B shows an example in which the rectangular data 84 shown in FIG. 2A is registered in the rectangular DB 34. As shown in the figure, the rectangle data is classified for each scale, and is registered in the database together with the X and Y coordinate positions determined according to the set plane rectangular coordinates and the size of the maintenance map data defined by the rectangle data. .
The rectangular data can be registered in the rectangular DB 34 by the user corresponding to the map hierarchy stored in the map information providing server 70.

An example of polygon data prepared for each scale will be described with reference to FIG. 3A, and an example of polygon data defined in the rectangle DB will be described with reference to FIG.
The polygon data is data indicating a polygon defined using the vertices of map information (map representation is omitted). As shown in the figure, a polygon is constituted by a point sequence (P1, P2, P3, P4, P5, P6) of the vertexes of the map information. As described above, the polygon data can define a larger range than the rectangular data created with the same size as the map information, and can further define a polygon other than the rectangle.

  A point 85 indicates the latitude and longitude of the map transmitted from the terminal 50 shown on the plane rectangular coordinates. The polygon search unit 22 can calculate an internal area on the coordinates of the point sequence (P1,..., P6) constituting the polygon, and search for polygon data including the point 85 in the internal area. Note that a method for determining the inside / outside of a point with respect to a polygon is well known (for example, Japanese Patent No. 2595361), and various determination methods can be applied.

  It should be noted that the polygons of the point sequence (P1,..., P6) can also be set as regions excluding the excluded polygons (regions surrounded by the point sequence (P11, P12, P13, P14)). In this case, even if a point indicating latitude / longitude is included in the polygon of the point sequence (P1,..., P6), a point indicating latitude / longitude is also included when the exclusion polygon also includes a point indicating latitude / longitude. It is determined that there is no polygon that contains.

The polygon data in the polygon DB 32 shown in FIG. 3B shows an example in which the polygon and the excluded polygon shown in FIG. 3A are registered in the database. As shown in the figure, the polygon data is classified for each scale and is registered in the database together with a point sequence that defines the polygon and the excluded polygon.
The polygon data can be stored in the polygon DB 32 by the user corresponding to the map hierarchy stored in the map information providing server 70.

As described above, the method of searching for a rectangle including the latitude and longitude of the map is a simple process because the inside / outside determination of a rectangle is simpler than the inside / outside determination of a polygon. Is more than polygon data. Therefore, when the inside / outside determination is performed, the number of calculation times of the rectangle search is larger than that of the polygon search.
In addition, the method of searching for polygons that include the latitude and longitude of the map is more complicated because the polygon inside / outside determination is more complicated than the inside / outside determination of a rectangle. The number is small compared to rectangular data. For this reason, when the inside / outside determination is performed, the number of calculations for polygon search is smaller than that for rectangular search.

In many cases, the map is prepared for each rectangular area of a certain size. Therefore, it is preferable that the map is generated as rectangular data instead of polygons adapted to the rectangular area because the inside / outside determination becomes easier. However, in this case, since the number of rectangular data may increase, when the maintenance range is large, it is preferable to select polygon search in consideration of an increase in memory consumption and the number of calculations.
Thus, the map information providing server 70 can provide a high-speed map hierarchy search by making it possible to use a rectangular search or a polygon search.

An example of processing for notifying the map hierarchy of the maintenance map using the rectangular DB 34 will be described with reference to FIG.
First, when the scroll map provided by the map information providing server 70 is accessed via the input unit, and the screen transition and / or scale change of the scroll map is performed on the display unit 57, the display position of the scroll map is displayed from the terminal 50. Is sent to the map hierarchy notification server 10 (step S101). The position coordinate reception control unit 21 receives position information via the communication unit 40 (step S102). The rectangular search unit 23 accesses the rectangular DB 34, selects the lowest map hierarchy as the search target map hierarchy (step S103), and internally receives the received position coordinates from a plurality of rectangles that define the range of the maintenance map. The rectangle included in is searched (step S104). It should be noted that the lowermost map hierarchy to be searched in step S103 may be either the maximum scale map hierarchy or the minimum scale map hierarchy in the rectangular DB 34, or the uppermost layer instead of the lowermost map hierarchy. The map hierarchy may be selected. Alternatively, in step S103, a map layer other than the top layer or the bottom layer may be selected as the map layer to be searched.

As a result of the search, if there is a rectangle including the position coordinates inside, the map hierarchy storage control unit 24 stores the map hierarchy in which the rectangle is registered in the memory (step S105), and proceeds to step S106. If there is no rectangle that contains the position coordinates as a result of the search, the rectangle search unit 23 increments one map hierarchy to be searched (step S107) and repeats step S104 again.
In step S106, the rectangular search unit 23 determines whether or not the map layer is the uppermost layer. If it is the uppermost layer, the process proceeds to step S108. If the map layer is other than the uppermost layer, the process returns to step S107. repeat.

In order to describe steps S104 to S107, an example of the rectangle inside / outside determination will be described with reference to FIG. A point 85a is the position coordinate transmitted in step S101. Regions 81, 82, and 83 are one or a plurality of rectangular data indicating map information maintained in the map layers 1, 2, and 3, respectively.
In the map layers 1 and 2, the point 85 a is included in the rectangular data 81 and 82, but in the map layer 3, the point 85 a is not included in the rectangular data 83. Accordingly, the map layers of the maintenance map are determined and selected as map layers 1 and 2, and the map layers 1 and 2 are stored in the memory in step S105.

  In step S108, the map hierarchy transmission control unit 25 sends the map of the maintenance map to the terminal 50 by transmitting the map hierarchy list of the maintenance map stored in step S105 to the terminal 50 via the communication unit 40 of the server 10. Notify the map hierarchy. Note that the map hierarchy list transmitted at this time is, for example, the scale of the map hierarchy such as 1/2500, 1/5000, etc. in XML format (for example, <layers> 2500, 5000, 10,000, 20000, 25000, 40000, 70000). , 130000, 250,000 </ layers>).

  The terminal 50 receives the map hierarchy list (step S109), acquires the map of the map hierarchy shown in the map hierarchy list from the map information providing server 70, displays the map of the acquired map (step S110), The process of notifying the map hierarchy of the maintenance map using the rectangular DB 34 is terminated.

In step S110, it is possible to output a graphical user interface (GUI) that allows the map display switching control unit 52 of the terminal 50 to select only the map hierarchy that has been prepared in the map shown in the acquired map hierarchy list. An example of the screen display provided by the map display switching control unit 52 in this case is shown in FIG. As illustrated, the display unit 57 of the terminal 50 displays a map hierarchy list 301 of a maintenance map and a map hierarchy list 302 of an unprepared map corresponding to the map 303 transmitted by the map information providing server 70. The user can access the map hierarchy list 301 of the maintenance map and display the maintenance map of the desired map hierarchy on the screen. On the other hand, the access to the map hierarchy list 302 of the undeveloped map does not display the undeveloped map of the map hierarchy. In this way, by providing the user with the information on the undeveloped map and the developed map and allowing only the information on the map of the developed map to be displayed, it is possible to prevent access to the undeveloped map in advance. Unnecessary data processing such as displaying a screen display 402) of FIG.
The function of the map display switching control unit 52 can also be implemented in the map hierarchy notification server 10. In this case, the map hierarchy notification server 10 obtains the map information from the map information providing server 70 to generate screen information as shown in FIG. 6, and transmits the screen information in step S108.

Further, in step S101, the position coordinates are transmitted with the access to the undeveloped map in the terminal 50 as an event, and in step S110, the undeveloped map movement control unit 53 of the terminal 50 performs screen transition to the undeveloped map. Can not be. In addition, after the screen transition to the undeveloped map is stopped, the screen display switching control unit 54 may automatically transition the screen to the minimum scale map that is maintained. An example of the screen display in such a case is shown in FIG.
401 is a screen display of the map before the scale change by the user. The user can change the map scale 404 displayed on the screen via the input unit 58 and make the screen transition to a map of a desired map scale. Reference numeral 402 denotes a map screen display of an undeveloped map hierarchy. Reference numeral 403 denotes a screen display of a maintained minimum scale map.
When the user uses the map scale 404 to change the screen from the currently displayed map to a map hierarchy that is not prepared, the undeveloped map movement control unit 53 displays the map of the undeveloped map hierarchy indicated by 402. The display can be stopped. The process of canceling the user's operation and stopping the screen transition in this way is to stop obtaining undeveloped map information as shown in 402 from the map information providing server 70 or as shown at 402 on the terminal 50. This is done by stopping the automatic generation of the undeveloped map screen. Further, after stopping the screen transition to the undeveloped map, the map display switching control unit 54 shown in the map hierarchy list selects the map with the smallest scale that has been prepared, and the map with the smallest scale from the map information providing server 70. Can be acquired and a map of the minimum scale can be displayed as indicated at 403.
The function of the undeveloped map movement control unit 53 can also be implemented by the map hierarchy notification server 10. In this case, the map hierarchy notification server 10 transmits information prohibiting the acquisition of the map information of the position information to the map information providing server 70 to the terminal 50 in step S108. Therefore, in step S110, the terminal 50 does not display a map such as that shown in 402 on the screen.
The function of the map display switching control unit 54 can also be implemented in the map hierarchy notification server 10. In this case, the map hierarchy notification server 10 acquires the map of the minimum scale prepared from the map information providing server 70 in step S108, and transmits the map to the terminal 50. In step S110, the terminal 50 displays a map of the minimum scale that is maintained on the screen.

Further, in the map hierarchy notification server 10, the map hierarchy may be classified and stored for each type of map (road map, railway map, satellite photograph, etc.). In that case, in step S101, the location information including the information indicating the map type displayed on the terminal 50 is transmitted by using the access to the undeveloped map in the terminal 50 as an event, and in step S108, the terminal 50 is transmitted to the terminal 50. The map hierarchy of the maintenance map classified for each map type information (including a map type different from the type of map being displayed on the terminal 50) is notified. In step S110, the map hierarchy display control unit 55 of the terminal 50 A maintenance map of a map type including the position coordinates of the maintenance map can be acquired from the map information providing server 70 and switched to a screen display showing the acquired maintenance map. An example of the screen display in this case is shown in FIG.
As shown in the figure, when the user accesses the road map 501, the map hierarchy notification server 10 searches and transmits the map hierarchy including the position coordinates in a plurality of map types, and the map hierarchy display control unit 55 It switches to the satellite photograph 502 which is a maintenance map of the map type including the position coordinates.
The function of the map hierarchy display control unit 55 can also be implemented by the map hierarchy notification server 10. In this case, the map hierarchy notification server 10 acquires a maintenance map of a map type including desired position coordinates from the map information providing server 70 in step S108, and transmits the map to the terminal 50. In step S110, the terminal 50 displays a map type maintenance map including desired position coordinates on the screen.

An example of processing for notifying a maintenance map using the polygon DB 32 will be described with reference to FIG.
Steps S101 and S102 and S108 to S110 shown in FIG. 9 are the same as Steps S101 and S102 and S108 to S110 shown in FIG.
In step S201, the polygon search unit 22 accesses the polygon DB 32, selects the lowest map layer as the search target map layer, and stores the received position coordinates from the plurality of polygons that define the range of the maintenance map. Are searched for (step S202). The lowermost map hierarchy may be either the maximum scale or the minimum scale in the polygon DB 32.

As a result of the search, if there is a polygon including the position coordinates inside, the process proceeds to step S203, and if there is no polygon, the process proceeds to step S206. In step S203, the polygon search unit 22 accesses the polygon DB 32 and searches for an excluded polygon that includes the received position coordinates from the map layer of the same layer as step S202 (step S203). As a result of the search, if there is no excluded polygon including the position coordinates therein, the process proceeds to step S204, and if there is an excluded polygon, the process proceeds to step S206.
In step S204, the map hierarchy storage control unit 24 stores the map hierarchy in which the searched polygon is registered in the memory, and the process proceeds to step S205. If there is no polygon that includes the position coordinates as a result of the search, the polygon search unit 22 increments one map hierarchy to be searched (step S206), and repeats step S202 again.
In step S205, the polygon search unit 22 determines whether or not the map layer is the uppermost layer. If it is the uppermost layer, the process proceeds to step S108, and if it is a map layer other than the uppermost layer, the process returns to step S206. repeat.
Steps S108 to S110 are performed as described in FIG. 3, and the process of notifying the map hierarchy of the maintenance map using the polygon DB 32 is terminated.

As described above, the map hierarchy notification server searches the rectangle or polygon that includes the latitude and longitude of the map from the plurality of rectangles or polygons that define the range of the maintenance map, and includes the latitude and longitude of the map. Can be notified to the terminal.
Thereby, the map hierarchy search server displays a list of prepared map hierarchies, cancels the operation of moving to an undeveloped map, compared to the conventional example in which the maintenance map is manually and visually searched by the user, The convenience of map information is improved by automatic switching to a maintenance map hierarchy or automatic switching to another type of maintenance map.

It is a figure which shows the outline | summary of a map hierarchy notification system. (A) shows an example of rectangular data prepared for each scale, and (b) is a diagram showing an example of rectangular data defined in the rectangle DB. (A) shows an example of polygon data prepared for each scale, and (b) is a diagram showing an example of polygon data defined in the polygon DB. It is a figure which shows an example of the process which notifies the maintenance map using rectangular DB. It is a figure which shows an example of the prepared map hierarchy. It is a figure which shows an example of a screen display. It is a figure which shows an example of a screen display. It is a figure which shows an example of a screen display. It is a figure which shows an example of the process which notifies the maintenance map using polygon DB.

Explanation of symbols

DESCRIPTION OF SYMBOLS 5 Map hierarchy notification system 7 Network 10 Map hierarchy notification server 21 Position coordinate reception control part 22 Polygon search part 23 Rectangular search part 24 Map hierarchy storage control part 25 Map hierarchy transmission control part 50 Terminal 52 Map display switching control part 53 Undeveloped map Movement control unit 54 Map type switching control unit 55 Map hierarchy display control unit 70 Map information providing server

Claims (11)

A map layer notification method for notifying a terminal connected to a network to a server having a storage unit of a map layer of a maintenance map,
Transmitting the position coordinates on the map from the terminal to the server;
The server searches the storage unit storing a plurality of rectangles or a plurality of polygons defining the range of the maintenance map for each map layer, and searching for a rectangle or a polygon containing the position coordinates therein;
From the server, notifying the terminal of the map hierarchy of the maintenance map whose range is defined by a rectangle or polygon containing the position coordinates inside ,
A map hierarchy notification method comprising:   The map hierarchy notification method according to claim 1, further comprising the step of switching the display to a map included in the notified map hierarchy at the terminal after the notification of the map hierarchy of the maintenance map. Notifying a map hierarchy of the maintenance map, when servicing a map defined in scope by the rectangle or polygon including the position coordinates on the map therein without comprising the step of notifying the map hierarchy is not,
2. The map hierarchy notification method according to claim 1, further comprising a step of stopping screen transition to a map corresponding to the position coordinates at the terminal when the terminal is notified that there is no map hierarchy. The server stores, for each map type, a plurality of rectangles or a plurality of polygons defining the maintenance map range,
Notifying the map hierarchy of the maintenance map includes notifying the terminal of the map hierarchy of the maintenance map for each type of map;
The map hierarchy notification method according to claim 1, further comprising a step of switching the display to a map of the map hierarchy of the maintenance map at the terminal after notification of the maintained map hierarchy for each type of map.   The map hierarchy notification method according to claim 1, further comprising: displaying a list of map hierarchies of the maintenance map on the terminal. A communication unit and a storage unit, and a server connected to a network to the terminal,
A position coordinate reception control unit that receives position coordinates on a map from the terminal via the communication unit;
A rectangle or a polygon search unit for searching for a rectangle or a polygon containing the position coordinates on the map from the storage unit storing a plurality of rectangles or a plurality of polygons defining the range of the maintenance map for each map hierarchy;
The terminal is caused to function as a map layer transmission control unit that transmits a map layer of a maintenance map whose range is defined by a rectangle or polygon that includes a position coordinate on the map inside through the communication unit. Map hierarchy notification program. A map hierarchy notification system comprising a terminal having a communication unit, a server having a communication unit and a storage unit, and a server for notifying the network hierarchy of the terminal connected to the network,
The server
A position coordinate reception control unit that receives position coordinates on a map from the terminal via the communication unit of the server;
A rectangle or a polygon search unit for searching for a rectangle or a polygon containing the position coordinates on the map from the storage unit storing a plurality of rectangles or a plurality of polygons defining the range of the maintenance map for each map hierarchy;
A map layer transmission control unit that transmits to the terminal a map layer of a maintenance map whose range is defined by a rectangle or polygon that includes the position coordinates on the map inside via the communication unit of the server; Feature map hierarchy notification system.   The map according to claim 7, wherein the terminal further includes a map display switching control unit that switches a display to the map information of the map hierarchy of the maintenance map at the terminal after receiving the map hierarchy of the maintenance map at the terminal. Hierarchy notification system. When there is no maintenance map whose range is defined by a rectangle or polygon that includes the position coordinates on the map inside, the map hierarchy transmission control unit transmits no map hierarchy information to the terminal,
The map hierarchy notification according to claim 7, further comprising: an undeveloped map movement control unit that stops screen transition to a map corresponding to the position coordinates at the terminal when the map hierarchy absence information is transmitted to the terminal. system. The server stores, for each map type, a plurality of rectangles or a plurality of polygons that define a maintenance map range for each map hierarchy,
The map hierarchy transmission control unit transmits the map hierarchy of the maintenance map to the terminal for each type of the map,
The map hierarchy notification according to claim 8, wherein the terminal further includes a map type switching control unit that switches a display to a map of the map hierarchy of the maintenance map after receiving the maintained map hierarchy for each type of the map. system. If the terminal range displayed by the terminal has moved to map the range of undeveloped sends said position coordinates on a map from the terminal to the server,
The map hierarchy notification system according to claim 7, wherein the terminal further includes a map display switching control unit that displays a list of map hierarchies of the maintenance map on the terminal.