JP2007101682A - Map display system, map display method, client terminal of map display system and its program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a map display system for reducing load of a server and shortening retrieval processing time of a landmark by improving operability of a user in display of a retrieval result of map information service. <P>SOLUTION: A client terminal separately displays information of each landmark existing in a plurality of designated areas at each area. In addition, the client terminal receives the landmark of the periphery of the designated area from the server, and temporarily stores it. When modification of the area is received, or when the retrieval result is small, or the like, the landmark in the periphery is displayed without inquiring the server. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention includes a map display system and a map including a client (such as a personal computer) and a server, wherein the server transmits map information in response to a request from the client by a user operation, and a map received by the client terminal is displayed. The present invention relates to a display method, a client terminal of a map display system, and a program thereof.

In recent years, a map information service that displays a map on a client terminal and provides various information on the map has become widespread. Many map information services implement landmark search that provides information on landmarks such as restaurants, sightseeing spots, stations, and real estate. When a landmark search is performed, in order for the user to acquire target information, it is necessary to specify landmark information (landmark name, genre, etc.) to be searched and a searched map area. Patent Document 1 discloses a technique in which a server accepts designation of an area on a map from a client terminal, and transmits and displays landmarks in the area to the client terminal.
Japanese Patent Laid-Open No. 10-38599

  Here, the technique of Patent Document 1 designates an area on which a user wants to search for landmark information on a map, and as a result, searches for information on landmarks located in that area. However, the above technique simply displays the search result of the landmark in the designated area. For example, even if a plurality of areas are designated, the user can determine which area the landmark of the search result is. However, there is a problem that it is difficult to know, and its operability is not considered. In addition, retrieval of landmarks in the designated area is a process that places a heavy load on the server, and therefore no consideration is given to reducing this load.

  Accordingly, the present invention provides a map display system and a map display method capable of improving user operability in displaying a search result of a map information service, and reducing a server load and a landmark search processing time. The object is to provide a client terminal of a map display system and its program.

  In order to achieve the above object, the present invention provides a landmark database that stores landmark information of each landmark, and a map database that stores map data and coordinates of predetermined points in the entire map indicated by the map data. And, based on the received point and the size information, the point corresponding to the size information based on the point input receiving means for receiving the input of the size information of the map to be displayed and the points in the entire map indicated by the map data In the map data reading means for reading the map data in the center range from the map database, the map display means for outputting the map indicated by the read map data on the display screen, and the map output on the display screen, one or more Area designation accepting means for accepting designation of an area, and a frame for each of the one or more areas Frame coordinate calculation means for calculating a plurality of coordinates, comparing the plurality of coordinates in the frame of the area with the coordinates of each landmark recorded in the landmark database, the coordinates of the landmark are The landmark information search means for reading the landmark information of the landmark from the landmark database, and the designated landmark information is the designated And a search result display means for displaying each area.

  Further, the present invention is characterized in that the map display system includes an area range change accepting unit that accepts any range change of deformation, enlargement, reduction, and movement of the area.

  The present invention also provides a landmark database that stores landmark information of each landmark, a map database that stores map data and coordinates of predetermined points in the entire map indicated by the map data, and the map data Map data in a range centered on the point according to the size information based on the received point and the size information, based on the received point and the size information, the point input receiving means for receiving the point in the entire map and the size information of the map to be displayed Map data reading means for reading from the map database, map display means for outputting a map indicated by the read map data on a display screen, and area designation for accepting designation of one or more areas in the map outputted on the display screen The receiving means and a plurality of coordinates in the frame of each of the one or more areas are calculated. The coordinate calculation means compares the plurality of coordinates in the area frame with the coordinates of each landmark recorded in the landmark database, and the landmark coordinates are the plurality of coordinates in the area frame. When it is located within the enclosed range, the landmark information search means for reading the landmark information of the landmark from the landmark database, and the search result for displaying the read landmark information by the designated area Within a range surrounded by predetermined coordinates in a peripheral frame at a predetermined distance from the frame, a display unit, an area range change receiving unit that receives any range change of deformation, enlargement, reduction, and movement of the area The landmarks that are located and are landmarks in the vicinity of landmarks other than those already searched Peripheral landmark information search means for reading information from the landmark database, peripheral landmark temporary storage means for temporarily storing landmark information of the peripheral landmarks, and change when the area range change is accepted Is the range within the peripheral frame, the landmark information displayed before the range change is recorded by the peripheral landmark temporary storage means together with the landmark information located within the range of the area after the range change. Peripheral landmark display means for reading and displaying landmark information of landmarks that are located within a range surrounded by a plurality of coordinates in the frame after changing the area range. This is a map display system.

  The present invention also provides a landmark database that stores landmark information of each landmark, a map database that stores map data and coordinates of predetermined points in the entire map indicated by the map data, and the map data Map data in a range centered on the point according to the size information based on the received point and the size information, based on the received point and the size information, the point input receiving means for receiving the point in the entire map and the size information of the map to be displayed Map data reading means for reading from the map database, map display means for outputting a map indicated by the read map data on a display screen, and area designation for accepting designation of one or more areas in the map outputted on the display screen The receiving means and a plurality of coordinates in the frame of each of the one or more areas are calculated. The coordinate calculation means compares the plurality of coordinates in the area frame with the coordinates of each landmark recorded in the landmark database, and the landmark coordinates are the plurality of coordinates in the area frame. When it is located within the enclosed range, the landmark information search means for reading the landmark information of the landmark from the landmark database, and the search result for displaying the read landmark information by the designated area A landmark located within a range surrounded by predetermined coordinates in a peripheral frame at a predetermined distance from the display means, and landmark information of peripheral landmarks other than the already searched landmarks Peripheral landmark information retrieval means for reading from the landmark database and the peripheral run If the number of landmark landmarks temporarily stored in the landmark information of the mark and the landmark information indicated by the search result of the landmark information search means is equal to or less than a predetermined number, A map display system comprising: peripheral landmark display means for reading and displaying landmark information of landmarks recorded in the peripheral landmark temporary storage means together with mark information.

  Further, according to the present invention, the map display system includes a search word input receiving unit that receives input of a search word, and the landmark information holds at least one of a landmark name and a landmark explanation document. The landmark information search means and the surrounding landmark information search means search the landmark name or landmark explanation document with the search word, and include the landmark name or landmark explanation document including the search word. It is characterized by searching landmark information.

  Further, in the present invention, the landmark information holds type information in addition to the landmark name, and the map display system includes type information input receiving means for receiving input of type information of the landmark, The landmark information search means and the surrounding landmark information search means search for landmark information including the type information received as the input.

  Further, the present invention is characterized in that the map display system described above further comprises area selection change receiving means for receiving a selection change from one area to the other area when a plurality of areas are designated.

  In the map display system described above, the area designation accepting unit or the area range change accepting unit accepts selection of a point on the map along with designation of an area graphic, and the map display unit The selected figure is displayed on the map with a predetermined size on the basis of the received point, and the frame coordinate calculation means calculates the coordinates of the four corners and the center of the map displayed by the map display means. Detecting from the map data, the difference between the vertical and horizontal latitude and longitude of one pixel is determined according to the number of vertical and horizontal pixels of the map, the vertical latitude difference of the map, and the horizontal longitude difference. A plurality of coordinates in the frame are calculated according to the number of vertical and horizontal pixel movements from the coordinates of the center of the map of the pixel corresponding to the coordinates located in the frame of the figure.

  In the present invention, the map display system described above has a server and a client terminal connected via a communication network, and the client terminal receives map display data from the server by accessing the server. Map display data receiving means, the point input receiving means, the map display means, the area designation receiving means, the frame coordinate calculating means, the search result display means, and the peripheral landmark temporary storage means. And the surrounding landmark display means, at least one of the search term input acceptance means or the type information input acceptance means, the area range change acceptance means, and the area selection change acceptance means, To do.

  Further, the present invention is a map display method in a map display system, wherein a landmark database stores landmark information of each landmark, and the map database stores map data and predetermined locations in the entire map indicated by the map data. The coordinates of the points are stored, the point input receiving unit receives the input of the size of the map to be displayed and the points in the entire map indicated by the map data, and the map data reading unit is configured to receive the received point and the size information. The map data in a range centered on the point according to the size information is read from the map database, the map display means outputs the map indicated by the read map data to the display screen, and receives the area designation. The means accepts designation of one or more areas in the map output on the display screen, The calculation unit calculates a plurality of coordinates in the frame of each of the one or more areas, and the landmark information search unit calculates a plurality of coordinates in the frame of the area and each landmark recorded in the landmark database. If the coordinates of the landmark are within the range surrounded by a plurality of coordinates in the frame of the area, the landmark information of the landmark is read from the landmark database, and the search result In the map display method, the display unit displays the read landmark information for each designated area.

  According to the present invention, in the map display method described above, the area range change accepting unit accepts any range change of deformation, enlargement, reduction, and movement of the area.

  Further, the present invention is a map display method in a map display system, wherein a landmark database stores landmark information of each landmark, and the map database stores map data and predetermined locations in the entire map indicated by the map data. The coordinates of the points are stored, the point input receiving unit receives the input of the size of the map to be displayed and the points in the entire map indicated by the map data, and the map data reading unit is configured to receive the received point and the size information. The map data in a range centered on the point according to the size information is read from the map database, the map display means outputs the map indicated by the read map data to the display screen, and receives the area designation. The means accepts designation of one or more areas in the map output on the display screen, The calculation unit calculates a plurality of coordinates in the frame of each of the one or more areas, and the landmark information search unit calculates a plurality of coordinates in the frame of the area and each landmark recorded in the landmark database. If the coordinates of the landmark are within the range surrounded by a plurality of coordinates in the frame of the area, the landmark information of the landmark is read from the landmark database, and the search result A display means displays the read landmark information for each designated area, an area range change accepting means accepts a range change of the area, and a peripheral landmark information searching means is a predetermined area from the frame. A landmark that is located within a range surrounded by predetermined coordinates in the peripheral frame of the distance and has already been searched. The landmark information of peripheral landmarks other than the landmark is read from the landmark database, the peripheral landmark temporary storage means temporarily stores the landmark information of the peripheral landmarks, and the peripheral landmark display means is the area. When the change of the range is accepted, if the change is in the range within the peripheral frame, the landmark located within the range of the area after the change in the landmark information displayed before the change of the range The landmark information recorded in the peripheral landmark temporary storage means together with the information and the landmark information located in the range surrounded by the plurality of coordinates in the frame after the area range change is read and displayed. This is a characteristic map display method.

  Further, the present invention is a map display method in a map display system, wherein a landmark database stores landmark information of each landmark, and the map database stores map data and predetermined locations in the entire map indicated by the map data. The coordinates of the points are stored, the point input receiving unit receives the input of the size of the map to be displayed and the points in the entire map indicated by the map data, and the map data reading unit is configured to receive the received point and the size information. The map data in a range centered on the point according to the size information is read from the map database, the map display means outputs the map indicated by the read map data to the display screen, and receives the area designation. The means accepts designation of one or more areas in the map output on the display screen, The calculation unit calculates a plurality of coordinates in the frame of each of the one or more areas, and the landmark information search unit calculates a plurality of coordinates in the frame of the area and each landmark recorded in the landmark database. If the coordinates of the landmark are within the range surrounded by a plurality of coordinates in the frame of the area, the landmark information of the landmark is read from the landmark database, and the search result The display means displays the read landmark information for each designated area, and the peripheral landmark information search means is located within a range surrounded by predetermined coordinates in a peripheral frame at a predetermined distance from the frame. The landmark information of the surrounding landmarks other than the already searched landmarks. The landmark landmark temporary storage means temporarily stores the landmark information of the surrounding landmark, and the peripheral landmark display means indicates the number of landmark information indicated by the search result of the landmark information search means. If the number is equal to or less than a predetermined number, the landmark information recorded in the peripheral landmark temporary storage means is read and displayed together with the landmark information located within the area range. Is the method.

  In addition, the present invention provides a landmark database that stores landmark information of each landmark, and a map database that stores map data and coordinates of predetermined points in the entire map indicated by the map data; A client terminal for map display, the client terminal of the map display system, the point input receiving means for receiving the input of the size of the map to be displayed and the points in the entire map indicated by the map data, and the reception Map data receiving means for receiving the map data from the server that reads map data in the range centered on the point according to the size information from the map database based on the size information and the size information; Map display means for outputting a map indicated by the map data to the display screen; In the map output on the display screen, area designation receiving means for accepting designation of one or more areas, frame coordinate calculating means for calculating a plurality of coordinates in the frame of each of the one or more areas, and a plurality of coordinates in the frame of the area When the coordinates and the coordinates of each landmark recorded in the landmark database are compared, and the coordinates of the landmark are located within a range surrounded by a plurality of coordinates in the frame of the area, Landmark information receiving means for receiving the read landmark information from the server for reading landmark information of the landmark from the landmark database, and a search for displaying the received landmark information by the designated area. And a result display means.

  According to the present invention, in the client terminal, the area range change accepting unit accepts any range change of deformation, enlargement, reduction, and movement of the area.

  In addition, the present invention provides a landmark database that stores landmark information of each landmark, and a map database that stores map data and coordinates of predetermined points in the entire map indicated by the map data; A client terminal for map display, the client terminal of the map display system, the point input receiving means for receiving the input of the size of the map to be displayed and the points in the entire map indicated by the map data, and the reception Map data receiving means for receiving the map data from the server that reads map data in the range centered on the point according to the size information from the map database based on the size information and the size information; Map display means for outputting a map indicated by the map data to the display screen; In the map output on the display screen, area designation receiving means for accepting designation of one or more areas, frame coordinate calculating means for calculating a plurality of coordinates in the frame of each of the one or more areas, and a plurality of coordinates in the frame of the area When the coordinates and the coordinates of each landmark recorded in the landmark database are compared, and the coordinates of the landmark are located within a range surrounded by a plurality of coordinates in the frame of the area, Landmark information receiving means for receiving the read landmark information from the server for reading landmark information of the landmark from the landmark database, and a search for displaying the received landmark information by the designated area. Accepts the result display means and any range change of deformation, enlargement, reduction, movement of the area And an area range change accepting means and a landmark located within a range surrounded by a predetermined coordinate in a peripheral frame at a predetermined distance from the frame, and a landmark land other than the already searched landmarks Peripheral landmark information receiving means for receiving the read peripheral landmark information from the server that reads the mark information from the landmark database, and peripheral landmark temporary storage means for temporarily storing the landmark information of the peripheral landmarks When the change of the area range is received, if the change is within the peripheral frame, the landmark information displayed before the range change is within the area range after the range change. A landmark recorded in the peripheral landmark temporary storage means together with the landmark information. Thus, the client terminal is characterized by comprising peripheral landmark display means for reading and displaying landmark information of landmarks located within a range surrounded by a plurality of coordinates in the frame after changing the area range.

  In addition, the present invention provides a landmark database that stores landmark information of each landmark, and a map database that stores map data and coordinates of predetermined points in the entire map indicated by the map data; A client terminal for map display, the client terminal of the map display system, the point input receiving means for receiving the input of the size of the map to be displayed and the points in the entire map indicated by the map data, and the reception Map data receiving means for receiving the map data from the server that reads map data in the range centered on the point according to the size information from the map database based on the size information and the size information; Map display means for outputting a map indicated by the map data to the display screen; In the map output on the display screen, area designation receiving means for accepting designation of one or more areas, frame coordinate calculating means for calculating a plurality of coordinates in the frame of each of the one or more areas, and a plurality of coordinates in the frame of the area When the coordinates and the coordinates of each landmark recorded in the landmark database are compared, and the coordinates of the landmark are located within a range surrounded by a plurality of coordinates in the frame of the area, Landmark information receiving means for receiving the read landmark information from the server for reading landmark information of the landmark from the landmark database, and a search for displaying the received landmark information by the designated area. Result display means and a range surrounded by predetermined coordinates in a peripheral frame at a predetermined distance from the frame Peripheral landmark information for receiving the read landmark information from the server that reads landmark information of neighboring landmarks other than the already searched landmarks from the landmark database. When the number of landmark information received by the receiving means, the peripheral landmark temporary storage means for temporarily storing landmark information of the peripheral landmarks, and the landmark information receiving means is equal to or less than a predetermined number, A peripheral terminal display means for reading and displaying landmark information of landmarks recorded in the peripheral landmark temporary storage means together with landmark information located within a range. .

  In addition, the present invention provides a landmark database that stores landmark information of each landmark, and a map database that stores map data and coordinates of predetermined points in the entire map indicated by the map data; A point input receiving process for receiving a point in the entire map indicated by the map data and size information of the map to be displayed, the program being executed by the client terminal of the map display system having a map display client terminal And receiving map data from the server that reads map data in a range centered on the point according to the size information from the map database based on the received point and the size information. Process and output the map indicated by the received map data to the display screen A map display process; an area designation receiving process for accepting designation of one or more areas in the map output to the display screen; a frame coordinate calculating process for calculating a plurality of coordinates in a frame of each of the one or more areas; Comparing a plurality of coordinates in the area frame with the coordinates of each landmark recorded in the landmark database, the coordinates of the landmark are located within a range surrounded by the plurality of coordinates in the area frame. The landmark information reception processing for receiving the read landmark information from the server that reads the landmark information of the landmark from the landmark database, and the received landmark information is specified. And a search result display process for displaying each area.

  Further, the present invention is a program for executing an area range change receiving process for receiving any range change of deformation, enlargement, reduction, and movement of the area in addition to the above process.

  In addition, the present invention provides a landmark database that stores landmark information of each landmark, and a map database that stores map data and coordinates of predetermined points in the entire map indicated by the map data; A point input receiving process for receiving a point in the entire map indicated by the map data and size information of the map to be displayed, the program being executed by the client terminal of the map display system having a map display client terminal And receiving map data from the server that reads map data in a range centered on the point according to the size information from the map database based on the received point and the size information. Process and output the map indicated by the received map data to the display screen A map display process; an area designation receiving process for accepting designation of one or more areas in the map output to the display screen; a frame coordinate calculating process for calculating a plurality of coordinates in a frame of each of the one or more areas; Comparing a plurality of coordinates in the area frame with the coordinates of each landmark recorded in the landmark database, the coordinates of the landmark are located within a range surrounded by the plurality of coordinates in the area frame. The landmark information reception processing for receiving the read landmark information from the server that reads the landmark information of the landmark from the landmark database, and the received landmark information is specified. Search result display processing to be displayed for each area, and deformation, enlargement, reduction, movement of the area. Area range change acceptance processing for accepting such a range change, and landmarks that are located within a range surrounded by predetermined coordinates in a peripheral frame at a predetermined distance from the frame, and surrounding areas other than the already searched landmarks The landmark information reception process for receiving the landmark information read from the landmark database and the landmark information reception process for receiving the landmark information read from the landmark database and the landmark information of the received landmarks are temporarily recorded. When the peripheral landmark temporary storage processing to be performed and the range change of the area are received, if the change is within the peripheral frame, the range change is included in the landmark information displayed before the range change. Landmark information that is temporarily recorded with landmark information located within the area of the later area And a peripheral landmark display process for reading and displaying landmark information of landmarks located within a range surrounded by a plurality of coordinates in the frame after changing the area range.

  In addition, the present invention provides a landmark database that stores landmark information of each landmark, and a map database that stores map data and coordinates of predetermined points in the entire map indicated by the map data; A point input receiving process for receiving a point in the entire map indicated by the map data and size information of the map to be displayed, the program being executed by the client terminal of the map display system having a map display client terminal And receiving map data from the server that reads map data in a range centered on the point according to the size information from the map database based on the received point and the size information. Process and output the map indicated by the received map data to the display screen A map display process; an area designation receiving process for accepting designation of one or more areas in the map output to the display screen; a frame coordinate calculating process for calculating a plurality of coordinates in a frame of each of the one or more areas; Comparing a plurality of coordinates in the area frame with the coordinates of each landmark recorded in the landmark database, the coordinates of the landmark are located within a range surrounded by the plurality of coordinates in the area frame. The landmark information reception processing for receiving the read landmark information from the server that reads the landmark information of the landmark from the landmark database, and the received landmark information is specified. Search result display processing for each area, and the location in the peripheral frame at a predetermined distance from the frame. The landmark information that has been read from the server that reads landmark information of landmarks other than the landmarks that have already been searched from the landmark database. Peripheral landmark information reception processing, peripheral landmark temporary storage processing for temporarily recording landmark information of the received peripheral landmarks, and the number of landmark information received by the landmark information reception means are predetermined. If the number is less than or equal to the number, the peripheral landmark display processing for reading and displaying the landmark information of the landmarks temporarily recorded together with the landmark information located within the area range.

According to the present invention, since the client terminal displays the information of each landmark located in a plurality of designated areas separately for each area, the user locates which landmark is located in each area. Can be easily confirmed.
According to the present invention, the client terminal receives landmarks around the designated area from the server and temporarily stores them. Then, when an area change is accepted or there are few search results, surrounding landmarks can be displayed without inquiring of the server. As a result, the load on the server can be reduced. In addition, the landmark display processing speed is increased when the area range is changed, and the search processing time is shortened. Thus, the user operability can be improved.

  Hereinafter, a map display system according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing the configuration of the map display system according to the embodiment. In this figure, reference numeral 1 denotes a client terminal (map display device) used by the user. Reference numeral 2 denotes a server that transmits requested map data and information on landmarks on the map (land landmarks, buildings, etc., for example, stores and public institutions) to the client terminal 1. The client terminal 1 and the server 2 are connected via a communication network such as the Internet to constitute a map display system.

  The client terminal 1 includes an interface processing unit 11 (point input receiving means, map display means, area designation receiving means, frame coordinate calculation means, search result display means, peripheral landmark temporary storage means, peripheral landmark display means, search word, Input receiving means, type information input receiving means, and area range change receiving means) and a search area storage unit 12. The interface processing unit 11 and the search area storage unit 12 are configured by executing a web browser program on the client terminal 1 and a program (map display data) received from the server 2 on the client terminal. Here, the map display data received from the server 2 is, specifically, data (HTML file or image file) serving as a template for constructing a screen, data for displaying a map (map image or map image). Latitude / longitude, scale), data related to landmark search (a program such as Java (registered trademark) script for performing search processing, landmark data used for search results), and the like. The search area storage unit 12 is specifically a storage area secured on the memory by the cache function of the web browser. The server 2 includes a map search unit 21, a map DB (database) 22, a landmark search unit 23, and a landmark DB 24. The map search unit 21 searches the map data recorded in the map DB 22 based on a request from the client terminal 1, and the landmark search unit 23 acquires the landmark information recorded in the landmark DB 24 from the client terminal 1. Search based on requests.

Next, information stored in various databases will be described.
The map DB 22 holds map data and information on the latitude and longitude of the map indicated by the map data. Each map point of the map data is associated with the latitude / longitude information.
In the landmark DB 24, the landmark name, latitude / longitude, landmark explanation document, genre identification number, and the like of each landmark that can be displayed on the map are recorded in association with each other.

FIG. 2 is a diagram showing a flow of map display processing.
Next, processing until a user-desired map is displayed on the client screen will be described with reference to FIG.
First, the user starts the web browser of the client terminal 1 and accesses the server 2 (step S1). The interface processing unit 11 functions by starting the web browser. The server 2 has the function of a web server, and transmits a map search screen to the client terminal 1 by HTML or the like based on the access from the client terminal 1 (step S2). The map search screen displays an address input field, a list for address designation, a scale designation button, and the like. When the user performs address entry, address designation, scale designation, etc. on the client terminal 1, interface processing is performed. The unit 11 transmits a map request including the designated address and scale information to the server 2 (step S3).

  When the server 2 receives the map request, the map search unit 21 reads the address and scale included in the map request. The map search unit 21 holds data of an address / latitude / longitude correspondence table, and thereby converts the address into latitude / longitude information. Then, using the latitude and longitude obtained from the address as the center of the map, the latitude and longitude of the four corners of the map are calculated based on the scale data in the map request and the size (specified value) of the map that can be displayed on the client terminal 1. Then, the map search unit 21 reads map data corresponding to the latitude and longitude of the center and the latitude and longitude of the four corners from the map DB 22 (step S4), and obtains a search result including the latitude and longitude of the center and the four corners and the read map data. Then, the data is transmitted to the client terminal 1 via the communication network (step S5). In the client terminal 1, the map of the map data received by the interface processing unit 11 is displayed on the screen (step S6), and the latitude and longitude of the center and the four corners of the map data are stored in a memory or the like. In addition to the displayed map, the screen includes a search term and genre input field to narrow down the search for landmarks, a radio button for selecting an area display figure frame (area frame), and whether or not to search for surroundings. Radio buttons etc. are displayed. With the above processing, the map desired by the user is displayed on the screen, and this processing is the same as the conventional technology.

FIG. 3 is a first diagram showing a landmark search processing flow.
Next, the landmark search process will be described.
First, the client terminal 1 accepts designation from the user in the input field on the screen as to whether or not there is a peripheral search (step S101). This peripheral search is used to determine whether or not to search for landmarks also around the area on the map designated by the user. Further, the client terminal 1 accepts a designation in the input column for the search word and genre when performing landmark search from the user (step S102). These designations may be made only when necessary. The search term is for narrowing down landmarks from landmark names and explanation documents, and the genre is for narrowing down landmarks according to the type of information. Further, the client terminal 1 accepts selection of an area display graphic frame (for example, a circle, an ellipse, a square, a polygon, etc.) indicating an area on the map from the user (step S103).

  Then, the client terminal 1 accepts designation of a desired point on the map displayed on the screen (step S104). This is performed by, for example, operating the mouse to move the pointer on the screen to a desired point and clicking. When the interface processing unit 11 accepts the designation of the point, the interface processing unit 11 determines that the landmark search process is started, and displays an area display graphic frame having a predetermined range size based on the designated point. While displaying the designated point as the center, an area ID is generated (step S105).

  Next, the interface processing unit 11 calculates the latitude and longitude of a plurality of points in the area display graphic frame (step S106). For example, if the area display figure frame is a square, the latitude and longitude on the map at the four corners of the area are calculated. In this calculation, since the latitude and longitude of the four corners of the map displayed on the screen are known (received from the map search unit 21 of the server 2), the difference in longitude of one pixel in the horizontal direction of the map is obtained. Is calculated by “difference in longitude at both ends of the map in the horizontal direction ÷ number of pixels in the map in the horizontal direction”. Further, the difference in latitude of one pixel in the vertical direction of the map is calculated by “the difference in latitude between the vertical ends of the map ÷ the number of pixels in the vertical direction of the map”. Further, the latitude and longitude of the center of the map is known (received from the map search unit 21 of the server 2), and the number of vertical and horizontal pixel movements from the center of the map to the four corners of the area display figure frame is known. Therefore, the latitude and longitude of each of the four corners of the area display graphic frame are: the longitude of the center of the map + <the number of pixel movements in the longitude direction from the center of the map (± differs depending on the movement direction) × the difference in longitude for one pixel> The latitude of the center of the map + <the number of pixel movements in the latitude direction from the center of the map (± differs depending on the movement direction) × the difference in latitude of one pixel>.

  Next, the interface processing unit 11 associates the generated area ID with the area display graphic frame and registers it in the search area storage unit 12, and associates the generated area ID with a predetermined plurality of points on the area display graphic frame in association with the area ID. The latitude and longitude (in this embodiment, if the area display graphic frame is a square, the four corners) are registered in the search area storage unit 12 (step S107). Then, the interface processing unit 11 transmits a landmark search request to the server 2 (step S108). This landmark search request includes the area ID, the latitude and longitude of multiple points on the area display graphic frame (latitude and longitude of the four corners of the square area), whether or not to perform the peripheral search, the search word (if specified), the genre Contains information about the identification number (if specified).

  In the server 2, the landmark search unit 23 accepts a landmark search request. Then, the landmark search unit 23 compares the plurality of latitudes and longitudes on the area display graphic frame with the latitudes and longitudes of the landmarks stored in the landmark DB, and then compares the plurality of latitudes on the area display graphic frame. It is determined whether or not the latitude and longitude of the landmark is included in the area indicated by the longitude (step S109). Landmark information of landmarks included in the area indicated by multiple latitudes and longitudes on the area display figure frame (landmark name, latitude / longitude, landmark explanation document, genre identification number, landmark icon data, etc.) ) Is read from the landmark DB (step S110).

  Also, the landmark search unit 23 determines whether the information on whether or not the peripheral search is executed indicates whether or not there is a search (step S111). Is determined based on a peripheral distance parameter that defines the range of the peripheral area, and a plurality of latitudes and longitudes on the frame of the peripheral area are calculated. For example, if both the latitude and longitude parameters are 1 degree, and the area display figure frame is a square, out of the four corners of the area display figure frame, +1 degree for each latitude and longitude in the upper right corner, and the latitude and longitude in the lower right corner Latitude -1 degree, longitude +1 degree for each, latitude -1 degree, longitude -1 degree for each latitude longitude in the upper left corner, latitude +1 degree, longitude -1 degree for each latitude longitude in the upper left corner, and the surrounding area Output the latitude and longitude of the four corners on the frame. Then, whether or not there is a landmark located in the new area range including the peripheral area is compared with the latitude and longitude on the frame of the peripheral area and the latitude and longitude of each landmark stored in the landmark DB. (Step S112). Then, the landmark search unit 23 removes the same landmarks located in the area of the original area display graphic frame from the landmarks located in the new area range, and obtains the landmark information of the surrounding landmarks. Read from the mark DB 24 (step S113). At this time, if the number is greater than the prescribed number, the number of landmarks may be reduced until the prescribed number is reached. Alternatively, the number of landmarks acquired from the server may be set in advance, and even when the peripheral distance parameter is wide, peripheral landmarks close to the area frame may be acquired below the set number. Since the number of landmarks transmitted from the server is reduced by this processing, the processing load on the server is reduced as compared with the case where the number of landmarks is reduced to a predetermined number or less on the terminal side. The peripheral distance parameter may be set in advance to a value that does not place a load on the server.

  Next, the landmark search unit 23 determines whether or not a search term is included in the landmark search request (step S114), and if included, among the landmarks searched by the above-described processing. Then, landmark information of the landmark including the search word in the landmark name and the explanation document is extracted (step S115). In addition, the landmark search unit 23 determines whether or not the genre identification number is included in the landmark search request (step S116), and if included, among the landmarks searched by the above processing. Further, a landmark including in the landmark information the same genre identification number as the genre identification number included in the landmark search request is extracted (step S117). This makes it possible to narrow down landmarks desired by the user. Then, the landmark search unit 23 returns the landmark information of the finally extracted landmark to the client terminal 1 as a landmark search result (step S118). Each landmark in the landmark search result is given an area ID and information for identifying whether it is a landmark in the area display graphic frame or a landmark in the peripheral area, and a plurality of latitudes on the peripheral area frame. Longitude may be included.

  When the interface processing unit 11 of the client terminal 1 receives the landmark search result from the server 2, the latitude / longitude information and the icon data are obtained from the landmark information of the landmark in the area display figure frame of the landmark search result. read. Then, landmark icon data is displayed at the position of the corresponding latitude and longitude on the map already displayed on the screen (step S119). The interface processing unit 11 records the landmark information of the landmark in the area display graphic frame in the search area storage unit 12 in association with the area ID (step S120). Further, the interface processing unit 11 records the landmark information of the landmarks in the peripheral area of the landmark search result in the search area storage unit 12 in association with the area ID without displaying the icon data (step) S121). A plurality of latitudes and longitudes on the peripheral area frame may be associated with the area ID and recorded in the search area storage unit 12. Further, the interface processing unit 11 displays the name of the landmark in the selected area on the map on the screen, that is, the search result in the search result display frame displayed together with the map. Note that the icon data of the landmark may be displayed on the map by a number corresponding to the search output order of the landmark result, in addition to the mark that images the landmark. This makes it possible to quickly check how many desired landmarks exist in the area. The order of the processing is not limited to this, and may be an order in which a certain step is replaced with another step within a processable range.

FIG. 4 is a first diagram showing a screen image of the search result.
As shown in this figure, when the user designates one point on the map using the mouse, an area display graphic frame (in the figure, a rectangular frame) centered on that point is displayed. Then, the landmark of the search result is displayed within the range of the area, and the name of the landmark is displayed in the search result display frame. In addition, it is not the process of displaying the area display graphic frame centering on the specified point, but at one point on the area display graphic frame at the specified point (for example, of the four corners when the area display graphic frame is a square) The area display graphic frame may be displayed so that a point indicating any corner) is positioned.

  When the number of landmarks in the area display graphic frame is less than the prescribed number and the number of landmark icons displayed on the map on the screen is small, the interface processing unit 11 calculates the latitude and longitude from the landmark information of the landmarks in the surrounding area. And the icon data may be read, and the landmarks may be displayed on a map on the screen.

FIG. 5 is a second diagram showing a screen image of the search result.
This figure shows an example in which peripheral landmarks are displayed. As shown in this figure, when the number of landmarks in the specified area is less than or equal to a predetermined number, etc., the landmarks retrieved as neighboring landmarks are displayed on the map and the names as neighboring landmarks are displayed. May be displayed.

  Here, the area display graphic frame can be moved, enlarged, reduced, etc. by indirect operations such as clicking and dragging the area display graphic frame using the mouse, menu screen operation using the keyboard, pressing shortcut keys, etc. You may make it deform | transform. When a plurality of areas are designated, an area display graphic frame indicating another area may be selected. The interface processing unit 11 accepts changes in these area ranges or changes to other areas. As a result, when a plurality of coordinates on the area display graphic frame change, the interface processing unit 11 detects the change, and again calculates the latitude and longitude of the plurality of coordinates on the area display graphic frame in step S106 described above. Then, the latitude and longitude of a plurality of coordinates on the area display figure frame before the area range change recorded in the search area storage unit 12 in association with the area ID is deleted, and the newly calculated latitude and longitude are used as the area ID. Register in association. And the process of step S108-step S121 is repeated. At this time, when the area after the range change includes the peripheral area searched for the landmark in steps S111 to S113, or when the area range is changed within the peripheral area (for example, the area display figure frame after the range change) The latitude / longitude of the plurality of coordinates in FIG. 5 and the plurality of latitude / longitude on the frame of the peripheral area are determined to determine whether or not the areas overlap), and the landmark of the peripheral area already held in the search area storage unit 12 The landmark data of the surrounding area is displayed on the map of the screen along with the landmarks that are located within the range of the area after the range change among the landmarks displayed before the area range change. You may do it. When the selection is changed from one area to another area, information on landmarks and peripheral landmarks recorded in the search area storage unit 12 in association with the ID of the other area is displayed. Perform processing.

FIG. 6 is a third diagram showing a screen image of the search result.
This figure shows an image when the area is enlarged. When the user enlarges an already designated area by a process such as dragging with the mouse, a landmark search result of a new area corresponding to the enlargement is displayed on a map or the like.

  Further, the interface processing unit 11 can accept designation of a plurality of areas on the same map. In this case, the processing from step S104 to step S121 is performed under the management of a new area ID (that is, an area ID is newly generated and registered in the search area storage unit 12 in association with this ID). Done. The interface processing unit 11 can also accept designation of a plurality of areas on different maps. In this case, the above-described steps S104 to S121 are performed on the separate map data acquired in step S4.

FIG. 7 is a fourth diagram showing a screen image of the search result.
As shown in this figure, when a plurality of areas are designated, the interface processing unit 11 classifies and displays landmark names as search results for each area. This figure also shows a state where the user has already selected three areas from area 1 to area 3. Here, there are three radio buttons for the search area list, but this figure shows that area 1 and area 2 are selected as search target areas in the search area list. As a result, the area display graphic frame of only area 1 and area 2 and the search result are displayed. Information on area 3 is recorded in association with the area ID of area 3 in search area storage unit 12. If the user selects area 3 in the search area list, the area display graphic frame and the search result for area 3 are read from the search area storage unit 12 and displayed. That is, the search area storage unit 12 serves as a cache.

Next, batch search processing in a plurality of search target areas will be described.
On the screen, it is assumed that the user changes whether or not the surrounding search is performed, changes the search word, changes the genre, etc., and specifies a plurality of areas (in the search area list). When the search start is instructed, the interface processing unit 11 of the client terminal 1 first displays information on whether or not to perform a peripheral search, a search word (if specified), and a genre identification number (if specified). It transmits to the mark search part 23. Further, the latitude and longitude on the area display graphic frame of the designated area (the latitude and longitude of the four corners of the square area) and the area ID are read from the search area storage unit 12, and the area ID and the area display graphic frame are read. A landmark search request including information corresponding to latitude and longitude is transmitted to the server 2. Then, it is determined whether or not the landmark search request has been transmitted for all the designated areas, and the process is repeated until the landmark search request has been transmitted for all the areas.

  The server 2 sequentially receives a plurality of landmark search requests. Then, the processing in steps S109 to S118 described above is repeatedly performed for each landmark search request. Then, the landmark search results are sequentially returned to the client terminal 1. In the client terminal 1, the interface processing unit 11 displays the icon data of the landmark indicated by the landmark search result on the map, and displays the searched landmark name in the search result display frame. At this time, the interface processing unit 11 sequentially receives the landmark search results for each area, but before receiving the search results for all areas, displays the search results in the order received. As a result, even if there is a heavy load on the server and a time lag occurs in receiving landmark search results for each area, it can be displayed before receiving all, so the user can check the received search results first. it can.

  Each of the above devices has a computer system inside. The process described above is stored in a computer-readable recording medium in the form of a program, and the above process is performed by the computer reading and executing this program. Here, the computer-readable recording medium means a magnetic disk, a magneto-optical disk, a CD-ROM, a DVD-ROM, a semiconductor memory, or the like. Alternatively, the computer program may be distributed to the computer via a communication line, and the computer that has received the distribution may execute the program. The program may be a markup language format program such as HTML or XML, or a script language format program such as Java (registered trademark) script that can process the markup language format program.

  The program may be for realizing a part of the functions described above. Furthermore, what can implement | achieve the function mentioned above in combination with the program already recorded on the computer system, and what is called a difference file (difference program) may be sufficient.

It is a block diagram which shows the structure of a map display system. It is a figure which shows the flow of a map display process. It is a 1st figure which shows a landmark search process flow. It is a 1st figure which shows the screen image of a search result. It is a 2nd figure which shows the screen image of a search result. It is a 3rd figure which shows the screen image of a search result. It is a 4th figure which shows the screen image of a search result.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Client terminal 2 ... Server 11 ... Interface processing part 12 ... Search area preservation | save part 21 ... Map search part 22 ... Map DB
23 ... Landmark search part 24 ... Landmark DB

Claims (21)

A landmark database that stores landmark information for each landmark,
A map database for storing map data and coordinates of predetermined points in the entire map indicated by the map data;
Point input receiving means for receiving the input of the size information of the map to be displayed and the points in the entire map indicated by the map data;
Map data reading means for reading, from the map database, map data in a range centered on the point according to the size information based on the received point and the size information;
Map display means for outputting a map indicated by the read map data to a display screen;
An area designation receiving means for accepting designation of one or more areas in the map output on the display screen;
Frame coordinate calculation means for calculating a plurality of coordinates in the frame of each of the one or more areas;
The plurality of coordinates in the area frame is compared with the coordinates of each landmark recorded in the landmark database, and the landmark coordinates are within a range surrounded by the plurality of coordinates in the area frame. If located, landmark information retrieval means for reading landmark information of the landmark from the landmark database;
Search result display means for displaying the read landmark information by the designated area;
A map display system comprising: The map display system according to claim 1, further comprising an area range change accepting unit that accepts any range change of deformation, enlargement, reduction, and movement of the area. A landmark database that stores landmark information for each landmark,
A map database for storing map data and coordinates of predetermined points in the entire map indicated by the map data;
Point input receiving means for receiving the input of the size information of the map to be displayed and the points in the entire map indicated by the map data;
Map data reading means for reading, from the map database, map data in a range centered on the point according to the size information based on the received point and the size information;
Map display means for outputting a map indicated by the read map data to a display screen;
An area designation receiving means for accepting designation of one or more areas in the map output on the display screen;
Frame coordinate calculation means for calculating a plurality of coordinates in the frame of each of the one or more areas;
The plurality of coordinates in the area frame is compared with the coordinates of each landmark recorded in the landmark database, and the landmark coordinates are within a range surrounded by the plurality of coordinates in the area frame. If located, landmark information retrieval means for reading landmark information of the landmark from the landmark database;
Search result display means for displaying the read landmark information by the designated area;
Area range change accepting means for accepting any range change of deformation, enlargement, reduction, movement of the area;
Landmark information of a landmark located within a range surrounded by predetermined coordinates in a peripheral frame at a predetermined distance from the frame, and the landmark information of peripheral landmarks other than the already searched landmarks from the landmark database Peripheral landmark information retrieval means for reading;
Peripheral landmark temporary storage means for temporarily storing landmark information of the peripheral landmarks;
When the change of the area is accepted, if the change is within the range of the peripheral frame, the landmark information displayed before the change of the area is located within the range of the area after the change of the area. The landmark information of the landmarks that are recorded in the peripheral landmark temporary storage means together with the landmark information and that are located within the range surrounded by the plurality of coordinates in the frame after the area range change is read and displayed. Surrounding landmark display means;
A map display system comprising: A landmark database that stores landmark information for each landmark,
A map database for storing map data and coordinates of predetermined points in the entire map indicated by the map data;
Point input receiving means for receiving the input of the size information of the map to be displayed and the points in the entire map indicated by the map data;
Map data reading means for reading, from the map database, map data in a range centered on the point according to the size information based on the received point and the size information;
Map display means for outputting a map indicated by the read map data to a display screen;
An area designation receiving means for accepting designation of one or more areas in the map output on the display screen;
Frame coordinate calculation means for calculating a plurality of coordinates in the frame of each of the one or more areas;
The plurality of coordinates in the area frame is compared with the coordinates of each landmark recorded in the landmark database, and the landmark coordinates are within a range surrounded by the plurality of coordinates in the area frame. If located, landmark information retrieval means for reading landmark information of the landmark from the landmark database;
Search result display means for displaying the read landmark information by the designated area;
Landmark information of a landmark located within a range surrounded by predetermined coordinates in a peripheral frame at a predetermined distance from the frame, and the landmark information of peripheral landmarks other than the already searched landmarks from the landmark database Peripheral landmark information retrieval means for reading;
Peripheral landmark temporary storage means for temporarily storing landmark information of the peripheral landmarks;
When the number of landmark information indicated by the search result of the landmark information search means is equal to or less than a predetermined number, the landmark recorded in the peripheral landmark temporary storage means together with the landmark information located within the area range Peripheral landmark display means for reading and displaying the landmark information of
A map display system comprising: The map display system according to any one of claims 1 to 4,
A search word input receiving means for receiving a search word input is provided.
The landmark information holds at least one of a landmark name and a landmark explanation document;
In the landmark information search means,
Search the landmark name or landmark explanation document by the search word, search landmark information including the landmark name or landmark explanation document including the search word,
The map display system according to claim 3 or claim 4,
In the surrounding landmark information search means,
The map display system, wherein the landmark name or landmark explanation document is searched by the search word, and landmark information including the landmark name or landmark explanation document including the search word is searched. The landmark information holds type information in addition to the landmark name,
The map display system according to any one of claims 1 to 5,
Provided with type information input acceptance means for accepting input of landmark type information,
The landmark information search means searches for landmark information including the type information received as the input,
The map display system according to any one of claims 3 to 5,
In the surrounding landmark information search means,
The map display system according to any one of claims 1 to 5, wherein landmark information including the type information received is searched. The area selection change receiving means for receiving a selection change from one area to the other area when a plurality of areas are designated. Map display system. In the map display system according to any one of claims 1 to 7,
The area designation accepting unit accepts selection of a point on the map along with designation of an area graphic,
In the map display system according to claim 2 or 3,
The area range change accepting unit accepts selection of a point on the map along with designation of an area graphic,
In the map display system according to any one of claims 1 to 7,
The map display means displays the selected graphic on the map with a predetermined size on the basis of the selected point,
The frame coordinate calculation means detects the coordinates of the four corners and the center of the map displayed by the map display means from the map data, and calculates the number of vertical and horizontal pixels of the map, the difference between the vertical latitudes of the map, and the horizontal In accordance with the difference in longitude of the pixel, the difference between the vertical and horizontal latitudes and longitudes of one pixel is obtained, and the vertical and horizontal pixels are moved from the coordinates of the center of the map of the pixel corresponding to the coordinates located in the figure frame of the area. A map display system that calculates a plurality of coordinates in the frame according to the number. A server and a client terminal connected via a communication network;
The client terminal comprises map display data receiving means for receiving map display data from the server by accessing the server,
Furthermore, in the map display system according to any one of claims 1 to 4,
The client terminal includes the point input receiving unit, the map display unit, the area designation receiving unit, the frame coordinate calculation unit, the search result display unit, the search word input receiving unit, or the type information input. Comprising at least one of accepting means and the area selection change accepting means,
In the map display system according to claim 2 or 3,
The client terminal comprises the area range change accepting means,
In the map display system according to claim 3 or 4,
The map display system, wherein the client terminal comprises the peripheral landmark temporary storage means and the peripheral landmark display means. A map display method in a map display system,
The landmark database stores landmark information for each landmark,
The map database stores the map data and the coordinates of each predetermined point in the entire map indicated by the map data,
The point input receiving means receives the input of the size information of the map to be displayed and the points in the entire map indicated by the map data,
Based on the received point and the size information, the map data reading means reads map data in a range centered on the point according to the size information from the map database,
The map display means outputs the map indicated by the read map data to the display screen,
The area designation accepting unit accepts designation of one or more areas in the map output on the display screen,
Frame coordinate calculation means calculates a plurality of coordinates in the frame of each of the one or more areas;
The landmark information search means compares the plurality of coordinates in the area frame with the coordinates of each landmark recorded in the landmark database, and the landmark coordinates are a plurality of coordinates in the area frame. When it is located within the range surrounded by the coordinates, the landmark information of the landmark is read from the landmark database,
A map display method, wherein search result display means displays the read landmark information for each designated area. The map display method according to claim 10, wherein the area range change accepting unit accepts any range change of deformation, enlargement, reduction, and movement of the area. A map display method in a map display system,
The landmark database stores landmark information for each landmark,
The map database stores the map data and the coordinates of each predetermined point in the entire map indicated by the map data,
The point input receiving means receives the input of the size information of the map to be displayed and the points in the entire map indicated by the map data,
Based on the received point and the size information, the map data reading means reads map data in a range centered on the point according to the size information from the map database,
The map display means outputs the map indicated by the read map data to the display screen,
The area designation accepting unit accepts designation of one or more areas in the map output on the display screen,
Frame coordinate calculation means calculates a plurality of coordinates in the frame of each of the one or more areas;
The landmark information search means compares the plurality of coordinates in the area frame with the coordinates of each landmark recorded in the landmark database, and the landmark coordinates are a plurality of coordinates in the area frame. When it is located within the range surrounded by the coordinates, the landmark information of the landmark is read from the landmark database,
The search result display means displays the read landmark information for each designated area,
The area range change accepting means accepts the area range change,
The peripheral landmark information search means is a landmark located within a range surrounded by predetermined coordinates in the peripheral frame at a predetermined distance from the frame, and the landmarks of peripheral landmarks other than the already searched landmarks Read mark information from the landmark database,
Peripheral landmark temporary storage means temporarily stores landmark information of the peripheral landmarks,
When the surrounding landmark display means receives the change of the range of the area, if the change is within the range of the peripheral frame, the landmark information displayed before the change of the range is displayed after the change of the range. Landmark information which is recorded in the peripheral landmark temporary storage means together with landmark information located within the area range, and which is located within the range surrounded by a plurality of coordinates in the frame after the area range change. A map display method characterized by reading and displaying mark information. A map display method in a map display system,
The landmark database stores landmark information for each landmark,
The map database stores the map data and the coordinates of each predetermined point in the entire map indicated by the map data,
The point input receiving means receives the input of the size information of the map to be displayed and the points in the entire map indicated by the map data,
Based on the received point and the size information, the map data reading means reads map data in a range centered on the point according to the size information from the map database,
The map display means outputs the map indicated by the read map data to the display screen,
The area designation accepting unit accepts designation of one or more areas in the map output on the display screen,
Frame coordinate calculation means calculates a plurality of coordinates in the frame of each of the one or more areas;
The landmark information search means compares the plurality of coordinates in the area frame with the coordinates of each landmark recorded in the landmark database, and the landmark coordinates are a plurality of coordinates in the area frame. When it is located within the range surrounded by the coordinates, the landmark information of the landmark is read from the landmark database,
The search result display means displays the read landmark information for each designated area,
The peripheral landmark information search means is a landmark located within a range surrounded by predetermined coordinates in the peripheral frame at a predetermined distance from the frame, and the landmarks of peripheral landmarks other than the already searched landmarks Read mark information from the landmark database,
Peripheral landmark temporary storage means temporarily stores landmark information of the peripheral landmarks,
When the number of landmark information indicated by the search result of the landmark information search means is equal to or less than a predetermined number, the peripheral landmark display means together with the landmark information located within the area range, the peripheral landmark temporary storage means A map display method characterized by reading and displaying landmark information of landmarks recorded on the map. A landmark database that stores landmark information for each landmark,
A map database for storing map data and coordinates of predetermined points in the entire map indicated by the map data;
A server with
A client device for map display,
The client terminal of the map display system having
Point input receiving means for receiving the input of the size information of the map to be displayed and the points in the entire map indicated by the map data;
Map data receiving means for receiving the map data from the server that reads map data in a range centered on the point according to the size information from the map database based on the received point and the size information; ,
Map display means for outputting the map indicated by the received map data to the display screen;
An area designation receiving means for accepting designation of one or more areas in the map output on the display screen;
Frame coordinate calculation means for calculating a plurality of coordinates in the frame of each of the one or more areas;
The plurality of coordinates in the area frame is compared with the coordinates of each landmark recorded in the landmark database, and the landmark coordinates are within a range surrounded by the plurality of coordinates in the area frame. If located, landmark information receiving means for receiving the read landmark information from the server that reads the landmark information of the landmark from the landmark database;
Search result display means for displaying the received landmark information by the designated area;
A client terminal comprising: The client terminal according to claim 14, wherein the area range change accepting unit accepts any range change of deformation, enlargement, reduction, and movement of the area. A landmark database that stores landmark information for each landmark,
A map database for storing map data and coordinates of predetermined points in the entire map indicated by the map data;
A server with
A client device for map display,
The client terminal of the map display system having
Point input receiving means for receiving the input of the size information of the map to be displayed and the points in the entire map indicated by the map data;
Map data receiving means for receiving the map data from the server that reads map data in a range centered on the point according to the size information from the map database based on the received point and the size information; ,
Map display means for outputting the map indicated by the received map data to the display screen;
An area designation receiving means for accepting designation of one or more areas in the map output on the display screen;
Frame coordinate calculation means for calculating a plurality of coordinates in the frame of each of the one or more areas;
The plurality of coordinates in the area frame is compared with the coordinates of each landmark recorded in the landmark database, and the landmark coordinates are within a range surrounded by the plurality of coordinates in the area frame. If it is located, landmark information receiving means for receiving the read landmark information from the server that reads the landmark information of the landmark from the landmark database;
Search result display means for displaying the received landmark information by the designated area;
Area range change accepting means for accepting any range change of deformation, enlargement, reduction, movement of the area;
Landmark information of landmarks located within a range surrounded by predetermined coordinates in a peripheral frame at a predetermined distance from the frame, and the landmark information of peripheral landmarks other than the already searched landmarks from the landmark database Peripheral landmark information receiving means for receiving the read peripheral landmark information from the server to be read;
Peripheral landmark temporary storage means for temporarily storing landmark information of the peripheral landmarks;
When the change of the area range is accepted, if the change is within the range of the peripheral frame, the landmark information displayed before the range change is located within the range of the area after the range change. The landmark information of the landmarks that are recorded in the peripheral landmark temporary storage means together with the landmark information and that are located within the range surrounded by the plurality of coordinates in the frame after the area range change is read and displayed. Surrounding landmark display means;
A client terminal comprising: A landmark database that stores landmark information for each landmark,
A map database for storing map data and coordinates of predetermined points in the entire map indicated by the map data;
A server with
A client device for map display,
The client terminal of the map display system having
Point input receiving means for receiving the input of the size information of the map to be displayed and the points in the entire map indicated by the map data;
Map data receiving means for receiving the map data from the server that reads map data in a range centered on the point according to the size information from the map database based on the received point and the size information; ,
Map display means for outputting the map indicated by the received map data to the display screen;
An area designation receiving means for accepting designation of one or more areas in the map output on the display screen;
Frame coordinate calculation means for calculating a plurality of coordinates in the frame of each of the one or more areas;
The plurality of coordinates in the area frame is compared with the coordinates of each landmark recorded in the landmark database, and the landmark coordinates are within a range surrounded by the plurality of coordinates in the area frame. If located, landmark information receiving means for receiving the read landmark information from the server that reads the landmark information of the landmark from the landmark database;
Search result display means for displaying the received landmark information by the designated area;
Landmark information of a landmark located within a range surrounded by predetermined coordinates in a peripheral frame at a predetermined distance from the frame, and the landmark information of peripheral landmarks other than the already searched landmarks from the landmark database Peripheral landmark information receiving means for receiving the read peripheral landmark information from the server to be read;
Peripheral landmark temporary storage means for temporarily storing landmark information of the peripheral landmarks;
When the number of landmark information received by the landmark information receiving means is equal to or less than a predetermined number, the landmark lands recorded in the peripheral landmark temporary storage means together with the landmark information located within the area range. Peripheral landmark display means for reading and displaying the mark information;
A client terminal comprising: A landmark database that stores landmark information for each landmark,
A map database for storing map data and coordinates of predetermined points in the entire map indicated by the map data;
A server with
A client device for map display,
A program to be executed by the client terminal of the map display system having
A point input acceptance process for accepting an input of a point in the entire map indicated by the map data and size information of the map to be displayed;
A map data receiving process for receiving the map data from the server that reads map data in a range centered on the point according to the size information from the map database based on the received point and the size information; ,
Map display processing for outputting the map indicated by the received map data to the display screen;
In the map output on the display screen, an area designation acceptance process for accepting designation of one or more areas;
Frame coordinate calculation processing for calculating a plurality of coordinates in the frame of each of the one or more areas;
The plurality of coordinates in the area frame is compared with the coordinates of each landmark recorded in the landmark database, and the landmark coordinates are within a range surrounded by the plurality of coordinates in the area frame. If it is located, landmark information reception processing for receiving the read landmark information from the server that reads the landmark information of the landmark from the landmark database;
A search result display process for displaying the received landmark information for each designated area;
A program that executes In addition to the process of claim 18,
A program for executing an area range change accepting process for accepting a range change of any one of deformation, enlargement, reduction, and movement of the area. A landmark database that stores landmark information for each landmark,
A map database for storing map data and coordinates of predetermined points in the entire map indicated by the map data;
A server with
A client device for map display,
A program to be executed by the client terminal of the map display system having
A point input acceptance process for accepting an input of a point in the entire map indicated by the map data and size information of the map to be displayed;
A map data receiving process for receiving the map data from the server that reads map data in a range centered on the point according to the size information from the map database based on the received point and the size information; ,
Map display processing for outputting the map indicated by the received map data to the display screen;
In the map output on the display screen, an area designation acceptance process for accepting designation of one or more areas;
Frame coordinate calculation processing for calculating a plurality of coordinates in the frame of each of the one or more areas;
The plurality of coordinates in the area frame is compared with the coordinates of each landmark recorded in the landmark database, and the landmark coordinates are within a range surrounded by the plurality of coordinates in the area frame. If it is located, landmark information reception processing for receiving the read landmark information from the server that reads the landmark information of the landmark from the landmark database;
A search result display process for displaying the received landmark information for each designated area;
An area range change acceptance process for accepting any range change of deformation, enlargement, reduction, movement of the area;
Landmark information of a landmark located within a range surrounded by predetermined coordinates in a peripheral frame at a predetermined distance from the frame, and the landmark information of peripheral landmarks other than the already searched landmarks from the landmark database Peripheral landmark information reception processing for receiving the read peripheral landmark information from the server to be read;
Peripheral landmark temporary storage processing for temporarily recording landmark information of the received peripheral landmarks;
When the change of the area is accepted, if the change is within the range of the peripheral frame, the landmark information displayed before the change of the area is located within the range of the area after the change of the area. Peripheral landmark display processing that reads and displays landmark information of landmarks that are temporarily recorded together with landmark information and that are located within a range surrounded by a plurality of coordinates in the frame after changing the area range; ,
A program that executes A landmark database that stores landmark information for each landmark,
A map database for storing map data and coordinates of predetermined points in the entire map indicated by the map data;
A server with
A client device for map display,
A program to be executed by the client terminal of the map display system having
A point input acceptance process for accepting an input of a point in the entire map indicated by the map data and size information of the map to be displayed;
A map data receiving process for receiving the map data from the server that reads map data in a range centered on the point according to the size information from the map database based on the received point and the size information; ,
Map display processing for outputting the map indicated by the received map data to the display screen;
In the map output on the display screen, an area designation acceptance process for accepting designation of one or more areas;
Frame coordinate calculation processing for calculating a plurality of coordinates in the frame of each of the one or more areas;
The plurality of coordinates in the area frame is compared with the coordinates of each landmark recorded in the landmark database, and the landmark coordinates are within a range surrounded by the plurality of coordinates in the area frame. If it is located, landmark information reception processing for receiving the read landmark information from the server that reads the landmark information of the landmark from the landmark database;
A search result display process for displaying the received landmark information for each designated area;
Landmark information of a landmark located within a range surrounded by predetermined coordinates in a peripheral frame at a predetermined distance from the frame, and the landmark information of peripheral landmarks other than the already searched landmarks from the landmark database Peripheral landmark information reception processing for receiving the read peripheral landmark information from the server to be read;
Peripheral landmark temporary storage processing for temporarily recording landmark information of the received peripheral landmarks;
When the number of landmark information received by the landmark information receiving means is equal to or less than a predetermined number, the landmark information of the temporarily recorded landmark is read and displayed together with the landmark information located within the area range. Surrounding landmark display processing,
A program that executes

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