JP5131803B2 - Map display system for mobile information devices - Google Patents

Description

The present invention downloads the map information accumulated in the map information management system for mobile information devices relates map display system for displaying on the screen of the mobile information device to create a map based on the downloaded map information, in particular, the real The present invention relates to a display method in which direction information in space and direction information in a map are displayed in a coordinated manner .

  A typical system that uses a combination of location information acquired from GPS and a map is a car navigation system. The car navigation system is characterized by a routing function that calculates the route to reach the destination using the current location information acquired from the GPS and the destination management information (address, map code, etc.) input to the car navigation.

  The car navigation system uses this routing function to create a nearby road map corresponding to the current position of the vehicle based on the current position information acquired from GPS and the map information stored in the car navigation device. At the same time, the route from the current position to the destination is displayed on the screen on the created map.

  In addition to car navigation systems, a typical example of a system that uses a combination of location information and a map is a map system using the Internet.

  In a general map display system using the Internet, an address, a station name, etc. are input from a personal computer as a terminal as the base point of the map, then sent to the map information management system, and the map information stored in the map information management system is Read it out and display it as a map on the computer screen.

  However, in this use, after the user displays the map on the computer, the next map is displayed with the base point as the center and the next map is displayed, so the user can operate the computer keyboard and mouse. For example, it is not suitable for a mobile device that assumes walking.

  Conventionally, there has been a map information providing service method for receiving area information requested by a client for a mobile phone with a limited screen size, and dividing the area into a plurality of partial areas and transmitting the area information to the client. (For example, see Patent Document 1)

JP 2002-76221 A

  Conventionally, there has been a program for performing direction guidance and movement information guidance using the GPS function of a mobile phone.

  The program features a north fixed mode and a direction measurement mode for the direction. For the map, the current location, destination, neighboring city, and travel route are displayed on the map of Japan, giving a sense of how far you have traveled. It is in point to understand.

  In the fixed north mode, the azimuth line is fixed on the mobile phone display with the north up, the south north, the east right, and the west left. There is a function to change the direction of the arrow line to the correct direction, and in the direction measurement mode, the direction of its own movement is the vertical direction from the bottom to the top of the mobile phone display, and the direction line and purpose There was a function to change the arrow line indicating the direction of the ground in the correct direction. (For example, see Patent Document 2)

JP-A-2005-3654

  Conventionally, in the United States, there are products that indicate the direction of the destination, the east-west north-south, and the distance to the destination on the instrument from the current location. (For example, see Non-Patent Document 1)

  The home page is http://www.garmin.com/products/etrex/.

GARMIN eTrex.

  Even if the user has a map at hand, for the first time in the land, link roads and symbols on the map with surrounding roads and landmarks (mountains, rivers, buildings, etc.) to create a sense of direction It takes time and attention to determine the course.

Although made from the general theory, even in the case at hand in that has a map, when you begin to walk toward the destination from the starting point, the user quickly to get the accurate sense of direction, the first step It ’s hard to step on .

  For example, when the user climbs the stairs of a subway station and comes out on the ground, he sees a map.

In such a case, usually, pedestrian, first of all, while looking at the map, looking for a building or a road that serves as a mark in the vicinity, to form a rough sense of direction, then walked toward the destination, near the While confirming buildings and landmarks that are a little far away, you will verify that you are moving in the right direction.

  However, it is inherently desirable to be able to quickly understand the map and form a sense of direction to the destination even when there are no landmark buildings in the vicinity.

In patent document 2, it is going to cope with two modes, a north fixed mode and an azimuth | direction measurement mode, regarding an azimuth | direction.

  Specifically, in claim 2, in the north fixed mode, the azimuth line is fixed on the display of the mobile phone with north as the upper direction, with north as the upper, south as the lower, east as the right, and west as the left. It has a function to change the arrow line indicating the direction of the destination recognized from the current location to the correct direction with respect to the fixed direction line ''. However, the arrow line indicating the direction of the destination is In such a case, the direction of the destination in the case where the north is expressed as an upward direction is simply clarified in an easy-to-understand manner.

In such a case, create “an arrow indicating the direction from the current location to the destination on the map” and “an arrow indicating the direction of the destination recognized from the user's current location”, and then create the two arrows on the map. When referring to the superimposing display above, the direction of the destination on the map and the orientation in the physical space are linked and displayed , but there is no description about this.

  However, even if the arrow used in the north mode is associated with the map, it merely indicates which direction the destination is on the map with north as the upward direction.

  In addition, what is clearly described in relation to the map is only the function of displaying the travel route on the Japanese map in claim 3.

Further, in claim 2, in the direction measurement mode, the direction of travel of the mobile phone is defined as the vertical direction from the bottom to the top of the display of the mobile phone, and the direction of the azimuth line and the direction of the destination with respect to the travel direction It has a function to change the direction to the correct direction '', but the direction measurement mode is a display screen with its own direction of travel set to the upward direction, and the deviation of the direction line of the current route from the direction line of the destination is It is only displayed, and there is no description showing the relation with the map for this part.

  Furthermore, in Patent Document 2, unlike Non-Patent Document 1, the most important feature is that if you move forward according to the arrow indicating the destination recognized from the current location, which is the greatest feature of GPS, you will always reach the destination. It does not utilize characteristic functions.

Therefore, in the present invention, in order to quickly understand the map and perform appropriate course control , the current point on the map ( the center of the neighborhood display frame ) is used as a base point to “ recognize from the current position of the user. It was built a system to be displayed on the map by overlaying the land of the arrow indicating the direction "and" arrow indicating the direction from the current location on the map to the destination ".

The length of the "arrow indicating the direction from the current location on the map to the destination" and the length of the "user of the current arrow indicating the direction of the recognized destination from position", since different respectively, the two Even if two arrows overlap, it is devised so that it can be easily seen.

  Hereinafter, means for solving the problem will be described.

In a map display system in which a user downloads map information stored in a map information management system to a mobile information device via a wireless network, and displays a map created based on the downloaded map information on the screen.
Using the obtained current position location information and destination information from the GPS, create the arrow said indicating the destination direction of recognized from the current position of the arrow and the user indicating the direction from the current location on the map to the destination Means to
Entire map information, the partial map information, the entire map management information, the partial map management information, using destination information, and the current location position information, the said "arrow indicating the direction from the current location on the map to the destination" the two "arrow indicating the direction of the destination recognized from the current position of the user", as starting point the current point on the map, means for displaying on the map,
Near locations display frame, the current position location information, and the "arrow indicating the direction of the user's recognized from the current position destination", obtained from GPS "arrow indicates the direction from the current location on the map to the destination" In accordance with the movement of the user, on the map, it is provided with means for displaying while changing its position sequentially,
The user is, two is the path to overlap with so that the "arrows indicating the destination direction of recognized from the current position of the user," the the "arrow indicating the direction from the current location on the map to the destination" By maintaining the relationship between the symbols and names on the map and the entities (mountains, rivers, buildings, roads, etc.) that exist in the vicinity, we can quickly understand the correspondence between the two and properly Can be controlled.

Hereinafter, a specific description will be given using the “map screen in the mobile information device” of FIG.
Figure 5 (1) “Map screen when mobile information device is facing west” is an example of mobile information device facing west. On the map, the arrow indicating the direction of the destination is It points to the destination, and the arrow indicating the direction of the destination recognized from the current location indicates southeast.

  In this case, the user first positions the mobile information device so that the arrow indicating north in the circle at the upper right of the screen is generally upward.

  Next, the user accurately displays two arrows on the screen of the mobile information device: an arrow indicating the direction of the destination recognized from the current location and an arrow indicating the direction of the destination from the current location on the map. Fine-tune the orientation of the mobile information device so that it overlaps

  The case where the two arrows overlap exactly is (2) “Map screen when the mobile information device is facing north” in FIG.

  In this case, the user can proceed to the destination while maintaining the state where the two arrows overlap, and the road or building existing in front of the display on the map around the neighborhood display frame. Can quickly understand the correlation.

In detail, both the arrow indicating the direction of the destination recognized from the current location and the arrow indicating the direction of the destination from the current location on the map indicate the direction based on the neighborhood display frame. As long as the two arrows are accurately overlapped, the user can quickly understand the correspondence between the roads and buildings on the map and the roads and buildings in front of them.

  More specifically, a building located to the right of the neighborhood display frame on the map appears to the right of the user, and a road located to the left of the neighborhood display frame on the map appears to the left of the user, The direction of the destination recognized from the current position of the user coincides with the direction of the destination on the map.

  According to the present invention, the user can quickly understand the correspondence between the notation on the map and the actual surrounding roads and buildings after accurately recognizing the direction of the destination.

  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 configuration diagram showing a map display system in one embodiment of the present invention.

  In the figure, the map display system includes a map information management system 100 and a mobile information device 300, and the map information management system 100 and the mobile information device 300 are connected by a wireless network 200.

  First, the map information management system 100 will be described.

  The map information management system 100 includes a recording device 101 and a server 108.

  The recording device 101 includes basic map information 102, overall map information 103, partial map information 104, basic map management information 105, overall map management information 106, partial map management information 107, destination management information 305, departure place management. Information 306 and screen display basic information 307 are stored.

  In the server 108, a management program 109 operates.

  The mobile information device 300 includes a processor 301, a screen 303, and a recording device 304.

  In the processor 301, a display program 302 operates.

  Further, the recording device 304 includes overall map information 103, partial map information 104, overall map management information 106, partial map management information 107, destination management information 305, departure point management information 306, screen display basic information 307, integrated map information. 308 and integrated map management information 309 are stored.

  FIG. 2 is a diagram showing an example of setting items of data used in the map display system.

  In the figure, basic map information 102 is a map image stored in the recording device 101, and basic map management information 105 is map management information stored in the recording device 101.

  Further, the entire map information 103 is a map image including a starting point and a destination, and the image format conforms to a data format standard adopted for representing map data.

  Also, set 'Z' in the first digit of the file name, and set the user number, overall map management number, and partial map management number (however, the setting content is a space) in the second and subsequent digits of the file name. use.

  Also, in the figure, the partial map information 104 is a series of partial map images divided in a size that is easy to see even on the small screen 303 of the mobile information device 300, and the image format is the data format used to express the map data. Conform to the standard.

  Also, 'B' is set in the first digit of the file name, and the user number, the entire map management number and the partial map management number are set and used in the second and subsequent digits of the file name.

  In the figure, the basic map management information 105 is data for managing the corresponding basic map information 102, and includes an overall map management number, a partial map management number, a coordinate system flag, a coordinate system number, and a lower left corner (X (Coordinates, Y coordinates), Top right corner (X coordinates, Y coordinates), Top left corner (X coordinates, Y coordinates), Bottom right corner (X coordinates, Y coordinates), Creation date are set as items Has been.

  Also, 'C' is used in the first digit of the file name, and the entire map management number and the partial map management number are used in the second and subsequent digits of the file name.

  FIG. 3 shows an example of data setting items used in the map display system.

  In the figure, the entire map management information 106 is data for managing the corresponding entire map information 103. The user number, the entire map management number, the scale factor, the partial map management number (however, the contents are spaces), coordinates System flag, coordinate system number, lower right corner (X coordinate, Y coordinate), upper right corner (X coordinate, Y coordinate), upper left corner (X coordinate, Y coordinate), lower right corner (X coordinate) , Y coordinate) and creation date are set as items.

  In the figure, partial map management information 107 is data for managing the corresponding partial map information 104, and includes a user number, an entire map management number, a partial map management number, a coordinate system flag, a coordinate system number, Guo lower left corner (X coordinate, Y coordinate), Guo Guo upper right corner (X coordinate, Y coordinate), Guo Guo upper left corner (X coordinate, Y coordinate), Guo Guo lower right corner (X coordinate, Y coordinate), creation date Day is set as an item.

  In the figure, destination management information 305 is data related to the destination, such as a user number, destination position information (latitude, longitude), overall map management number, partial map management number, coordinate system flag, coordinate system number. , Destination coordinates (X coordinate, Y coordinate), creation date are set as items.

  FIG. 4 is a diagram showing an example of setting items of data used in the map display system.

  In the figure, departure point management information 306 is data relating to a departure point, such as a user number, departure point position information (latitude, longitude), overall map management number, partial map management number, coordinate system flag, coordinate system number, departure The ground coordinates (X coordinate, Y coordinate) and creation date are set as items.

  In the figure, the screen display basic information 307 is basic information related to the screen display of the mobile information device 300, and the user number, map scale factor, screen size, and creation date are set as items.

  Also, in the figure, the integrated map information 308 is obtained by concatenating a plurality of received partial map information 104 as one image, and 'T' is added to the first digit of the file name, and the second and subsequent digits of the file name. The user number and the entire map management number are set and used, and a space is stored in the partial map management number.

  Also, in the figure, the integrated map management information 309 is obtained by concatenating a plurality of received partial map management information 105, with 'U' in the first digit of the file name and after the second digit of the file name. Uses and sets a user number and an entire map management number, and a space is stored in the partial map management number.

  Fig. 5 shows the screen format displayed on the screen 303 of the mobile information device 300. The upper row is set with a square frame with the letters "North" on the top and the top, and the lower row displays a map. The frame to be set is set.

  In the figure, the distance to the destination is displayed in the upper square frame.

  Also, an arrow indicating north always created based on GPS position information is displayed in the upper circular frame. When this arrow points upward, the mobile information device is facing north.

  (1) in Fig. 5 is a `` map screen when the mobile information device is facing west '', and the user is on Yamate-dori, which is the departure place, in the neighborhood display frame that is the user's current location. The short arrow extending from the center is “an arrow indicating the direction to the destination on the map”, and the long arrow is “an arrow indicating the direction of the destination as viewed from the current location”.

  In the map screen when the mobile information device is facing west, in the upper circle, the north indicated by the arrow is on the right, so that the mobile information device is facing the west. The long arrow, which is the “arrow indicating the direction of the destination as seen from the current location”, indicates the southeast corner, which is the lower left, and the short arrow, which is the “arrow indicating the direction of the destination on the map”, is the lower right corner. Is shown.

  In this case, when the user changes the orientation of the mobile information device so that the arrow in the upper circle is generally pointing up, (2) in Fig. 5 `` When the mobile information device is facing north No map screen "is displayed.

  On the map screen when the mobile information device is facing north, the arrow indicating the direction of the destination as viewed from the current location and the map The user fine-tunes the orientation of the mobile information device so that the `` arrow indicating the direction of the destination '' is displayed in an overlapping manner, and the user keeps this overlap so that the user can see the surrounding roads and buildings. You can understand the relationship with the displayed symbols on the map accurately, and you can proceed steadily toward the destination.

  FIG. 6 is a diagram showing the relationship between the whole map and the partial map, and each frame shows one map displayed on the screen 303 of the mobile information device 300.

  In the figure, the whole map is a map showing the starting point and the destination in one map, and the partial map is a detailed map from the starting point to the destination.

  In this map display system, the management program sets the route from the departure point to the destination based on the map with the road intersection as a node, and then extracts a series of partial maps including the route. And create.

  In this case, A2, B2, B3, and C3 are a series of partial maps.

  If a detailed map without nodes is used, all partial maps from A1, A2, A3, B1, B2, B3, C1, C2, and C3 will be downloaded and the user will receive a `` Destination from the current location '' The heading proceeds toward the destination while comprehensively judging the relationship between the “arrow indicating the direction of the direction”, the “arrow indicating the direction of the destination on the map”, and the road on the map.

  In the following, in relation to claim 1, a processing procedure in the map display system which is an embodiment of the present invention will be described.

  7 and 8 are flowcharts of the map display program.

  In the figure, the user operates the mobile information device 300, the user number and destination location information are displayed in the destination management information 305, and the user number and departure location information are displayed in the departure location management information 306. A user number, a map scale magnification, and a screen size are set in the basic information 307, and all the set information is registered in the recording device 304 of the mobile information device 300 (S100).

  After the user registration process is completed, the display program 302 is registered in the recording device 304 of the mobile information device 300 via the wireless network 200, with destination management information 305, departure point management information 306, screen display basic information. 307 is transmitted to the map information management system 100 (S101).

Next, in the map information management system 100, the management program 109 converts the coordinates of the destination position information of the destination management information 305, the coordinates of the departure position information of the departure point management information 306 converted, and screen display basic information Based on the screen size of 307, the scale factor of the entire map management information 106 is calculated. Using the calculated scale factor, the entire map information 103 and the entire map management information 106 are obtained from the basic map information 102 and the basic information management information 105. Extract and create
(S102).

  Next, it is confirmed whether or not the position information of all the nodes used for calculating the route from the departure point to the destination is included in the range of the entire map management information 106 (S103). In this case, until the position information of all the nodes is included in the range of the whole map management information 106, the scale factor of the whole map management information 106 is multiplied by 1.1 to recalculate a new scale factor (S104). Using the recalculated scale factor, the process of extracting and creating the entire map information 103 and the entire map management information 106 from the basic map information 102 and the basic information management information 105 is repeated (S102).

  When it is confirmed that the position information of all the nodes used to calculate the route from the starting point to the destination is included in the range of the entire map management information (S103), the calculated scale factor Is set to the scale factor of the entire map management information 106, and then the entire map information 103 and the entire map management information 106 are transmitted to the mobile information device 300 (S105).

  Next, in the map information management system 100, the management program 109 selects from the basic map information 102 and the basic map management information 105 using the screen size of the screen display basic information 307 and the scale factor of the overall map management information 106 as selection conditions. The partial map information 104 and the partial map management information 107 are extracted and created, and the extracted and created partial map information 104 and the partial map management information 107 are transmitted to the mobile information device 300 (S106).

  Next, in the map information management system 100, the management program 109 uses the coordinates obtained by converting the destination position information of the destination management information 305, the screen size of the screen display basic information 307, and the scale factor of the overall map management information 106. Extract the target data from the basic map information 102 and the basic map management information 105, and set the items of the overall map number, partial map management number, coordinate system flag, coordinate system number, and destination coordinates of the destination management information 305 Then, the destination management information 305 updated by setting the item is transmitted to the mobile information device 300 (S107).

Next, in the map information management system 100, the management program 109 uses the coordinates obtained by converting the departure point position information of the departure point management information 306, the screen size of the screen display basic information 307, and the scale factor of the entire map management information 106. The target data is extracted from the basic map information 102 and the basic map management information 105, and the items of the entire map number, partial map management number, coordinate system flag, coordinate system number, and departure point coordinates of the departure point management information 305 are set. , Send the departure point management information 306 updated by setting items to the mobile information device 300
(S108).

  Next, in the mobile information device 300, the display program 302 reads the entire map information 103, the partial map information 104, the entire map management information 106, the partial map management information 107, the destination management information 305, the departure point management from the map information management system. The information 306 is received, and all the received information is stored in the recording device 304 (S109).

  Next, 1 ('overall map') is stored in the changeover switch as an initial value, and the processing is continued from S112 (S110).

  Next, the display program 302 receives an instruction (1 for 'full map', 2 for 'partial map', 9 for 'end map') and a number indicating the received instruction. Store in the changeover switch (S111).

It is to be noted that the changeover switch's, is a switch's for controlling the flow of the processing of the program, the instruction content input by the user to the mobile information device is set with a number.

  Next, the display program 302 executes a series of processes after S112 until the number stored in the changeover switch becomes 9 ('end'), and the number stored in the changeover switch becomes 9 ('end'). When this happens, the process ends (S112).

  Next, when the coordinates created by converting the current location information exceed the boundaries of all the partial map management information 107 (S113), the display program 302 stores the destination management information stored in the recording device 304. 305, departure point management information 306, screen display basic information 307, departure point position information of departure point management information 306 is updated with current position information, updated departure point management information 306, destination management information 305, screen display After registering the basic information 307 in the recording device 304, the processing from S101 is continued (S114), and the coordinates created by converting the current location information do not exceed the boundaries of all the received partial maps 104. Processing is continued from S115 (S113).

  Next, when the number stored in the changeover switch is 1 ('Overall map') (S115), first, a supplementary place display frame is created, and the created nearby place display frame is used as the whole map information. 103, the display position is calculated using the coordinates created by converting the current position information and the four corner coordinates of the map of the entire map management information 106, and then the calculated display position is displayed. Use this to overlay the neighborhood display frame on the global map information 103, display the superimposed global map information 103 on the screen 303, and then continue the processing from S111 (S116), and the numbers stored in the changeover switch If is not 1 ('entire map'), the processing from S117 is continued (S115).

Next, when the number stored in the changeover switch is 2 ('partial map') (S117), first, a supplementary place display frame is created, and the created nearby place display frame is used as the partial map information. In order to superimpose and display on 104, the display position is calculated using the coordinates created by converting the current position position information and the four corner coordinates of the map of the partial map management information 107, and then the calculated display position is calculated. Use this to superimpose the appendix display frame on the partial map information 104, display the superimposed partial map information 104 on the screen 303, and then continue the processing from S111.
(S118) If the content stored in the changeover switch is not 2 ('partial map'), the processing from S111 is continued (S117).

  This is the end of the description regarding the “Mode for Carrying Out the Invention”, and the following is a supplementary description of the features of one embodiment of the present invention.

(1) Displaying a comprehensive map with a list and a partial map that is easy to see

  In one embodiment of the present invention, a small map size of a mobile information device displays a whole map with a list that displays a starting point and a destination on a single map and a partial map divided into easy-to-see sizes. .

  In addition, by displaying a neighborhood display frame indicating the current position of the user on the entire map and the partial map, it is possible to easily understand where the user is currently walking.

  Also, by using the current location coordinates obtained by converting the current location information into the coordinate system, the displayed map can be changed from the entire map to the partial map, or from the partial map. You can switch to the entire map with a simple key operation.

  For this reason, returning from the partial map to the entire map, it is possible to easily check the progress in the entire process.

  In addition, since the arrow indicating the direction of the destination on the map extends from the center of the neighborhood display frame toward the destination, the user can quickly display the current location and the direction to proceed by simply listing the map. Can understand.

(2) Quickly get a sense of direction by overlapping two arrows indicating the destination

  In one embodiment of the present invention, an arrow indicating the direction of the destination as viewed from the current location and an arrow indicating the direction of the destination from the current location on the map are displayed superimposed on the screen of the mobile information device. Can quickly understand the direction of the destination as seen from where it stands and the direction of the destination on the map.

  In addition to obtaining an accurate sense of direction at the first departure point, the arrow indicating the direction of the destination viewed from the current location and the arrow indicating the destination from the current location on the map overlap after starting to walk. As long as you are advancing while confirming, you can head to the destination while understanding the map accurately.

  In addition, according to one embodiment of the present invention, for example, even when the building exits from the subway exit where there are no landmark buildings, there is no need to understand the map while adjusting the direction in the head. , Understand the relationship between the direction of the destination and the notation on the map.

(3) Simple device operation

  In one embodiment of the present invention, consideration is given to the safety of a user while walking, so that the user can use the device with a simple device operation.

  For example, when the user crosses the boundary of the partial map displayed on the screen of the mobile information device, the display program performs screen transition processing to the next partial map, so that the user can perform special device operations. There is no need to do it.

  In addition, when a partial map is displayed using a display format in which the neighborhood display frame is always placed at the center of the screen, the partial map automatically scrolls around the neighborhood display frame. There is no need to operate the equipment.

  In addition, if the user exceeds the boundaries of all the partial maps that have already been downloaded, the location information of the registered destination and the current location obtained from the GPS, etc. from the mobile information device to the map information management system It is a mechanism to re-download the entire map including the map and a plurality of partial maps from the map information management system.

  For this reason, even if a user goes to the destination while making a detour for a walk, there is no need to perform a special device operation.

(4) The functions provided by an embodiment of the present invention can be used even in a detailed map in which no node is set.

  The route displayed by the car navigation system is set by connecting nodes on the map information. Therefore, the node is set on the premise of the road through which the automobile passes.

  On the other hand, the arrow display function provided by an embodiment of the present invention can also be used on a path or a mountain road where a node for calculating a route is not set. If you download it, you can select an appropriate road even in the mountains that cannot communicate with the map information management system.

  That is, as long as the road is described on the map, the user can use the map display system using the GPS even in the mountains.

  Below, the terminology used in the present invention will be supplementarily explained.

  The management program in the map information management system manages basic map information and basic information management information. Based on requests from mobile information devices, partial map information, partial map management information, overall map information, overall map management information, etc. Is a program that creates and sends to mobile information devices.

  The mobile information device in the present invention is a portable information device that has wireless communication capability and can exchange data with other information devices via a wireless network. For example, the mobile information device is a mobile phone, personal digital assistance, etc. , But not limited to mobile PCs.

  GPS is an abbreviation for Global Positioning System.

  GPS is a global positioning system developed by the United States, and aircraft and ships can determine their position by simultaneously knowing the distance from four or more GPS satellites. is there.

  The location information is information that consists of the latitude, longitude, altitude, geodetic system, coordinate system, etc. used by GPS, and is information for specifying the location where the target exists on the earth. is there.

  In addition, the coordinate system information is information composed of a coordinate system flag, a coordinate system number, an X coordinate, a Y coordinate, and the like, and is information for specifying a place where the target exists on the earth.

  The reference key is item information that is a key for searching for position information registered in the form of a table or the like.

  The map information is information composed of map image information such as whole map information and partial map information, map management information such as whole map management information and partial map management information.

  The map includes a map image that can be discriminated by the human eye.

  The whole map is a single map including the destination and the departure point, and is a map edited to fit on one screen in consideration of the screen size of the mobile information device.

  The partial map is a map divided into a size that fits on one screen of the mobile information device.

  The whole map information is information for creating a whole map image, and is created by processing the basic map information stored in the map information management system.

  The partial map information is information for creating a partial map image, and is created by processing the basic map information stored in the map information management system.

  The global map management information is information for managing the coordinates displayed on the global map. The coordinate system flag, the coordinate system number, the lower left corner of the map (X and Y coordinates), and the upper right corner of the map (X and Y coordinates), upper left corner (X and Y coordinates), lower right corner (X and Y coordinates), etc.

  The partial map management information is information for managing the coordinates displayed on the partial map. The coordinate system flag, the coordinate system number, the lower left corner of the map (X coordinate and Y coordinate), the upper right corner of the map (X and Y coordinates), upper left corner (X and Y coordinates), lower right corner (X and Y coordinates), etc.

  The screen display basic information is information necessary for searching a map and displaying it on the screen, such as a user number, a map scale factor, and a screen size.

  The integrated map information is map information obtained by connecting a plurality of partial map information received from a map information management system into a single image by a display program operating on a mobile information device.

  The integrated map management information is map management information obtained by combining a plurality of partial map management information received from a map information management system by a display program operating on a mobile information device.

  Further, the map scale magnification is a scale magnification of the map information extracted from the map information registered in the map information management system and downloaded to the mobile information device.

  The neighborhood display frame is a frame for indicating a certain area centered on the current location of the user on the map.

  The direction viewed from the current location is, for example, a direction such as east, west, south, and north with the current position of the user as a reference point.

  The direction is a direction indicating a point from a certain point.

  The direction refers to a relative direction indicating another coordinate from a certain coordinate, an azimuth viewed from the current position of the user, or a direction indicating another point recognized from a certain point on the map.

  The arrow indicating the destination when viewed from the current position is an arrow that indicates the direction of the destination by cutting three-dimensional GPS position information on, for example, a two-dimensional plane.

  The arrow indicating the destination on the map is an arrow indicating the direction of the destination at the current location on the map.

  Downloading refers to processing for receiving map information from a map information management system in a mobile information device.

  Also, the coordinate system flag is 1 for a plane Cartesian coordinate system (Japan geodetic system), 2 for a plane Cartesian coordinate system (all coordinate transformations in the world geodetic system), and if it is a plane rectangular coordinate system (representative point transformation in the world geodetic system) A classification flag assigned to each coordinate system, such as 3 etc.

  Also, the coordinate system number in Japan conforms to 2002 Ministry of Land, Infrastructure, Transport and Tourism Notification No.9.

  Also, instead of the departure location position information in the departure location management information, enter a reference key for searching the departure location location information such as address, map code, station name, phone number, etc., and to the GPS location information in the map information management system The conversion process may be performed.

  Also, instead of the destination location information in the destination management information, enter the reference key for searching the destination location information such as address, map code, station name, telephone number, etc. The conversion process may be performed.

  The map code is a code that designates a location in Japan with a 6-10 digit number, and searches for and uses a code registered in advance in a map, an address table, or the like.

  The recording device may be any device having a data holding function, and includes, for example, a magnetic disk, a semiconductor memory, and the like.

  The present invention can be applied to a mobile information device that downloads and uses map information from a map information management system.

It is the block diagram which showed the map display system in one Embodiment of this invention. (1)-(4) is a figure which showed an example of the setting item of the data stored in the recording device of the map display system in one embodiment of this invention. (1)-(3) is the figure which showed an example of the setting item of the data stored in the recording device of the map display system in one embodiment of this invention. (1)-(4) is a figure which showed an example of the setting item of the data stored in the recording device of the map display system in one embodiment of this invention. It is the figure which showed an example of the map screen displayed on a mobile information device in the map display system in one embodiment of this invention. It is the figure which showed the relationship between the whole map and partial map which are displayed on a mobile information device in the map display system in one embodiment of this invention. It is a flowchart which shows operation | movement of the map display program in one embodiment of this invention. It is a flowchart which shows operation | movement of the map display program in one embodiment of this invention.

100: Map information management system, 101: Recording device, 102: Basic map information, 103: Whole map information, 104: Partial map information, 105: Basic map management information, 106: Whole map management information, 107:
Partial map management information, 108: server, 109: management program, 200: wireless network, 300: mobile information device, 301: processor, 302: display program, 303: screen, 304: recording device, 305: destination management information, 306: Departure point management information, 307: Screen display basic information, 308: Integrated map information, 309: Integrated map management information.

Claims (1)

In a map display system in which a user downloads map information stored in a map information management system to a mobile information device via a wireless network, and displays a map created based on the downloaded map information on the screen.
Using the current location information and destination location information acquired from GPS, an arrow indicating the direction from the current location to the destination on the map and an arrow indicating the direction of the destination recognized from the current location of the user are created. Means to
Using the whole map information, partial map information, whole map management information, partial map management information, destination location information, and current location information, the “arrow indicating the direction from the current location to the destination on the map” and the Means for displaying two on the map, starting from the current point on the map, two of "the arrow indicating the direction of the destination recognized from the current position of the user";
Current location information obtained from the GPS, including a nearby location display frame, the “arrow indicating the direction from the current location to the destination on the map”, and the “arrow indicating the direction of the destination recognized from the current location of the user” In accordance with the movement of the user, on the map, it is provided with means for displaying while changing its position sequentially,
The user maintains a course so that the “arrow indicating the direction from the current position to the destination on the map” and the “arrow indicating the direction of the destination recognized from the current position of the user” overlap. By comparing the symbols and names on the map with the entities (mountains, rivers, buildings, roads, etc.) that exist in the surrounding area, you can quickly understand the correspondence between them and go to the destination without hesitation. A map display system characterized by advancing.

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