JP5242946B2 - A portable terminal and a program for displaying the azimuth of the current position as seen from prestored regional map information - Google Patents

Description

  The present invention relates to a portable terminal equipped with a display and a program thereof. In particular, the present invention relates to a portable terminal or the like that can display a map based on the current position on its display.

  2. Description of the Related Art Conventionally, a service for displaying a map based on a current position is provided on a mobile terminal such as a mobile phone. The portable terminal measures the current position using a positioning function such as GPS (Global Positioning System). Then, the mobile terminal transmits the measured current position information (for example, latitude and longitude) to the server via the wireless network. On the other hand, the server transmits map information based on the current position information to the mobile terminal. The portable terminal displays map information based on the current position on the display.

  There is also a technique in which a mobile terminal accumulates map information in advance and displays a map based on the current position on a display (see, for example, Patent Document 1). According to this technique, when the mobile terminal approaches the target position, if the current position is included in the map information accumulated in advance, the surrounding map is displayed. The map information stored in advance is, for example, map information of a place visited by a user who has a mobile terminal.

JP 2006-010441 A National Land Numerical Information, “About Mesh Data”, [online], [Search April 2, 2007], Internet <URL: http://nlftp.mlit.go.jp/ksj/mesh.html>

  For example, a terminal such as a car navigation system can store map information based on all positions where the terminal can move in advance. However, a mobile terminal such as a mobile phone is limited in map information that can be stored in advance due to memory limitations. That is, it is difficult for the mobile terminal to store in advance map information based on all positions where the terminal can move.

  According to the technique such as Patent Document 1, when the mobile terminal approaches the target position, the map can be displayed. However, until the target position is approached, it is impossible to know where the current position is.

  Therefore, the present invention provides a mobile terminal and a program having a simple navigation function that allows the user to know the current position even if the current position of the mobile terminal is not within the range of the area map information accumulated in advance. The purpose is to do.

According to the present invention, a portable terminal that displays a map on a display,
Memory means for storing area map information in advance;
Positioning means for positioning the current position of the mobile terminal;
Area determination means for determining whether the current position is within or outside the area of the area map information including the target position ;
Bearing detection means for detecting the bearing of the current position viewed from the target position of the area map information;
The map and orientation of the predetermined display range including the target position in the area map information are displayed on the display, and if the current position is within the area of the area map information, the map and orientation of the predetermined display range including the current position is displayed. Display control means for switching according to a user operation so as to be displayed on the screen .

  According to another embodiment of the portable terminal of the present invention, the direction detection means further detects the distance between the target position and the current position in the area map information, and the display control means further displays the distance. preferable.

  According to another embodiment of the portable terminal of the present invention, it is also preferable that the target position is a position designated by the user or the center of the area map information.

  According to another embodiment of the portable terminal of the present invention, it is also preferable that the target position is a position within the area of the regional map information and closest to the current position.

According to the present invention, there is provided a program for causing a computer mounted on a mobile terminal to display a map on a display, wherein the mobile terminal measures the current position of the mobile terminal and a memory unit that stores area map information in advance. And a positioning unit that
Area determination means for determining whether the current position is within or outside the area of the area map information including the target position ;
Bearing detection means for detecting the bearing of the current position viewed from the target position of the area map information;
The map and orientation of the predetermined display range including the target position in the area map information are displayed on the display, and if the current position is within the area of the area map information, the map and orientation of the predetermined display range including the current position is displayed. The computer is caused to function as display control means for switching according to a user operation so as to display on the screen .

  According to another embodiment of the program for a portable terminal of the present invention, the direction detection means further detects the distance between the target position and the current position in the area map information, and the display control means further displays the distance. It is also preferable to make the computer function like this.

  According to another embodiment of the portable terminal program of the present invention, it is also preferable to cause the computer to function so that the target position is a position designated by the user or the center of the area map information.

  According to another embodiment of the program for a mobile terminal of the present invention, it is also preferable to cause the computer to function so that the target position is within the area of the area map information and is the closest to the current position.

  According to the mobile terminal and the program of the present invention, even if the current position of the mobile terminal is not within the range of the pre-stored area map information, the user can see the direction of the current position as seen from the pre-stored area map information. (Further distance) can be known approximately, and a simple navigation function is provided.

  Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a divided map image.

FIG. 1 shows a mesh code of a divided map image defined by Non-Patent Document 1. The mesh code is divided into primary, secondary and tertiary. The primary mesh code is assigned to a divided map image of about 80 km × 80 km divided by a latitude difference of 40 minutes and a longitude difference of 1 degree . The secondary mesh code is obtained by further dividing the divided map image of the primary mesh code into 8 × 8, and is given to the divided map image of about 10 km × 10 km. Further, the tertiary mesh code is obtained by further dividing the divided map image of the secondary mesh code into 10 × 10, and is given to the divided map image of about 1 km × 1 km. According to FIG. 1, for each 1 km square divided map image, a divided map image identifier (svg file name) composed of a primary + secondary + tertiary mesh code is assigned.

  According to FIG. 1, the svg file name in the divided map image of the map data is represented in the format “aaaabbcc.svg”. “aaaa” represents a primary mesh code of a partition, “bb” represents a secondary mesh code of the partition, and “cc” represents a tertiary mesh code of the partition. For example, “53394525.svg” in FIG. 1 represents a divided map image of the primary mesh code “5339”, the secondary mesh code “45”, and the tertiary mesh code “25”.

  In the vicinity of Japan, it is about 120 km per latitude and about 80 km per longitude. According to FIG. 1, the lower left corner is represented by latitude and longitude coordinates (north latitude 35.33333 degrees, east longitude 139.0000 degrees), and the upper right edge is latitude and longitude coordinates (north latitude 36.00000 degrees, east longitude 140.000.000 degrees). It is represented by

  Specifically, selection of a divided map image identifier for displaying an area including 35.90001 degrees north latitude and 139.69126 degrees east longitude will be described.

North latitude 35.90001 degrees = degree minute second notation: north latitude 35 degrees 41 minutes 24.036 seconds east longitude 139.69126 degrees = degree minute second notation: east longitude 139 degrees 41 minutes 28.536 seconds

  In the primary mesh code, the latitude (35 degrees 41 minutes 24.036 seconds) is multiplied by 1.5 (53 degrees 32 minutes 6.054 seconds), and the "degree" portion (53) is extracted. Next, the part (139) of “degree” is extracted from the longitude (139 degrees 41 minutes 28.536 seconds) and 100 is subtracted (39). When these digits are combined, the primary mesh code is “5339”.

  For the secondary mesh code, the portion (32 minutes 6.054 seconds) below the "minute" of the latitude (53 degrees 32 minutes 6.054 seconds) multiplied by 1.5 is extracted and converted to seconds (1926.054 seconds) After that, the quotient (4) divided by 450 is taken out. Next, the part (41 minutes 28.536 seconds) below “minute” is extracted from the longitude (139 degrees 41 minutes 28.536 seconds), converted into seconds (2488.536 seconds), and then divided by 450 (5) is taken out. When these digits are combined, the secondary mesh code is “45”. From the primary mesh code “5339” + secondary mesh code “45”, the divided map image file name is “533945.svg”.

  For the tertiary mesh code, the portion (32 minutes 6.054 seconds) below the "minute" of the latitude (53 degrees 32 minutes 6.054 seconds) multiplied by 1.5 is extracted and converted to seconds (1926.054 seconds) After that, the remainder (126.054 seconds) divided by 450 is taken out, and the quotient (2) divided by 45 is taken out. Next, after taking the part (41 minutes 28.536 seconds) below "minutes" from the longitude (139 degrees 41 minutes 28.536 seconds), converting it to seconds (2488.536 seconds), the remainder after dividing by 450 (238.5536 seconds) is taken out and the quotient (5) divided by 45 is taken out. When these digits are combined, the tertiary mesh code is “25”. From the primary mesh code “5339” + secondary mesh code “45” + tertiary mesh code “25”, the divided map image file name is “53394525.svg”.

FIG. 1 also shows an example of a map image index. The map area has a height of 200 and a width of 200 with (0, 0) as the origin. Refer to the map data file of the required section in the <image ~> part. The association between the SVG image coordinates and the latitude and longitude is based on the CRS parameter. According to FIG. 1, the CRS parameters are 8 000, 0, 0, -1 2 000, -1117500 ,
428400 . As a result, x = 0 corresponds to 139.6875 degrees east longitude, x = 200 corresponds to 139.7125 degrees east longitude, y = 0 corresponds to 35.7 degrees north latitude, and y = 200 corresponds to 35.683333 degrees north latitude.

  In the above description, the mesh code of Non-Patent Document 1 has been described. Of course, the file naming rule is not related to the mesh code, for example, a combination of latitude and longitude values at the center of the section or a dictionary is used. May be uniquely determined. For example, when the centers are 35.69 north latitude and 139.69 east longitude, 3569 and 13969 multiplied by 100 may be combined to obtain 3569-1369.svg. Further, for example, serial numbers may be assigned to all sections in advance, and a dictionary between latitudes and longitudes included in each section may be created.

  According to FIG. 1, it is assumed that the mobile terminal has previously stored a hatched map (55394525.svg, 55394535.svg, 55394526.svg, 55394536.svg). Hereinafter, such a map is referred to as regional map information. The regional map information refers to map information that includes extremely specific information in the range, such as a guide map around a station, but the range is extremely limited.

  FIG. 2 is a first display map representing the current position with respect to the area map information accumulated in advance.

  According to FIG. 2, the current position does not exist in the range of the area map information accumulated in advance, but exists in the east-northeast position as viewed from the area map. In this case, the portable terminal based on this invention displays the area map centering on the target position in the area map accumulate | stored previously on a display. Furthermore, as viewed from the target position, the direction of the current position, the distance to the current position, and information indicating that the current position is outside the map area are displayed. The target position is a position designated by the user or the center of the area map information.

  The direction of the current position and the distance from the target position to the current position are calculated from the latitude and longitude of the current position and the latitude and longitude of the target position. The azimuth of the current position is represented by an arrow, for example. The distance to the current position is represented by km.

  In general, when displaying map information, the map is displayed from the current position to the target position, whereas the feature of the present invention is that the map is displayed from the target position to the current position. . That is, the viewpoint when viewing the map is completely different. For the user, a map of the current position cannot be displayed due to memory limitations of the portable terminal, but it is possible to know in which direction and distance the current position exists when viewed from the target position.

  FIG. 3 is a first display map when the target position is set to a position close to the current position with respect to FIG.

  According to FIG. 3, the current position does not exist in the area of the area map information, but is located east-northeast as viewed from the target position. Therefore, the mobile terminal displays a regional map based on the target position, with the position closest to the current position as the target position. According to FIG. 3, the target position is changed to a position closest to the current position, and a map of 53394536.svg is displayed on the display.

  By displaying the map as shown in FIG. 3, the user can see the map of the closest position in the area map. That is, the user can act for the purpose of approaching the area map as shown in FIG.

  FIG. 4 is a functional configuration diagram of the mobile terminal according to the present invention.

  According to FIG. 4, the mobile terminal 1 includes a memory unit 101, a positioning unit 102, an area determination unit 103, an orientation detection unit 104, a display control unit 105, a display unit 106, and a mobile terminal function unit 107. Have. Note that the mobile terminal function unit 107 realizes general functions other than the functions of the present invention in the mobile terminal. The area determination unit 103, the direction detection unit 104, and the display control unit 105 can also be realized by executing a program that causes a computer mounted on the mobile terminal 1 to function.

  The memory unit 101 stores area map information in advance. Such area map information may be downloaded from a server by a communication function, for example. A mobile terminal such as a mobile phone cannot store map information for all regions due to memory limitations. Therefore, the area map information is a part of the map that is necessary based on the target position of the user of the mobile phone.

  The positioning unit 102 measures the current position of the mobile terminal 1. For example, the latitude and longitude of the current position are measured by a positioning function such as GPS.

  The area determination unit 103 determines whether the current position is within or outside the area of the area map information. It is determined whether or not the current position is included in the latitude / longitude range of the area map information accumulated in advance.

  The direction detection unit 104 detects the direction of the current position viewed from the target position of the area map information. In addition, the direction detection unit 104 further detects the distance between the target position and the current position in the area map information.

  When it is determined that the current position is outside the area of the area map information, the display control unit 105 displays the area map information including the target position on the display and the direction of the current position. Further, the display control unit 105 further displays the distance between the target position and the current position in the area map information.

  Here, the target position may be a position specified by the user, or may be a center of the area map information or another position specified in the area map information. Further, it may be a position closest to the current position in the area map information area. In this case, the local map information at the closest position as viewed from the current position of the mobile terminal is displayed on the display.

  When the area determination unit 103 determines that the current position is within the map information area, the display control unit 105 determines the current position if the map information including the target position in the area map information does not include the current position. It can switch so that the map information of the area | region to include may be displayed. At this time, the display control unit 105 can display to prompt the user whether to switch or not, and can switch the display by the user's operation.

  FIG. 5 is a second display map representing the current position with respect to the area map information accumulated in advance.

  According to FIG. 5, as compared with FIG. 1, the current position of the mobile terminal is approaching the area map stored in advance in the mobile terminal. Therefore, the distance to the current position displayed on the map displayed on the mobile terminal is as short as 1.2 km.

  FIG. 6 is a third display map representing the current position with respect to the area map information accumulated in advance.

  According to FIG. 6, the current position of the mobile terminal is included in the range of the area map information accumulated in advance. However, it is not included in the display range based on the target position. In such a case, the fact that the current position is within the area of the area map is displayed, and a switching operation instruction for displaying the current position is also displayed. According to FIG. 6, the area of the area map including the current position is displayed by “pressing the 0 key”. As a result, the user can know that the user has entered the area of the area map information stored in advance in the mobile terminal. In addition, when the user presses the “0 key”, the area map including the current position can be displayed. At this time, the azimuth of the current position operates to indicate the azimuth of the target position.

  FIG. 7 is a fourth display map representing the current position with respect to the area map information accumulated in advance.

  According to FIG. 7, the current position of the mobile terminal is included in the range of the area map information accumulated in advance, and is also included in the display range based on the target position. In this case, the current position is also displayed on the regional map. After that, the current position is continuously measured, and the area map to be displayed is changed according to the movement.

  FIG. 8 is a fifth display map representing the current position with respect to the area map information accumulated in advance.

  According to FIG. 8, the current position of the mobile terminal is outside the range of the area map information accumulated in advance, and is located in the southwestern direction as viewed from the area map. At this time, the portable terminal again displays the area map centered on the target position in the area map accumulated in advance on the display. Furthermore, as viewed from the target position, the direction of the current position, the distance to the current position, and information indicating that the current position is outside the map area are displayed.

  As another embodiment, when the mobile terminal moves out of the range of the area map information, the current position of the mobile terminal is the area map based on the position last displayed in the area map information. It is also preferable to display on a display. That is, the area map displayed last is held as it is.

  As another embodiment, among the area map information accumulated in the mobile terminal, the area range displayed on the display can be displayed in various forms. For example, the initial display area in the case where the current position is outside the area map area can be designated by the coordinates of the center and the size of the area, for example. The center coordinates can be specified by latitude / longitude or SVG image coordinates. The size of the area can be specified by the radius of the inscribed circle, for example.

  Here, in the case of a mobile terminal such as a mobile phone, the aspect ratio of the display area of the display varies depending on the terminal. In this case, a method of specifying the size of the inscribed circle is also effective. The center coordinates are specified by latitude (north latitude is positive), longitude (east longitude is positive), the area is specified by the radius of the inscribed circle, and each value is separated by a comma. Therefore, the center is 39.691667 degrees north latitude 139.7 degrees east longitude, and the radius is 500m. By including the data in which such information is described in the map information, the initial display area can be designated.

  As described above in detail, according to the mobile terminal and the program of the present invention, the orientation (further distance) of the current position of the mobile terminal is displayed when viewed from the pre-stored area map information. Can know about its current position. This is particularly effective when a map of the current position is displayed on a terminal such as a mobile phone with memory restrictions.

  As the area map information, for example, there is an area map including store information around the station. Such a regional map contains very specific information in its range, but its range is very limited. Therefore, from the stage where there is no current position in the range of such a regional map, it is provided in what direction and at what distance the mobile terminal is located with respect to the regional map. It provides a simple navigation system. That is, in general, when displaying map information, the map is displayed from the current position to the target position, whereas the feature of the present invention is to display the map from the target position to the current position. It is in. That is, the viewpoint when viewing the map is completely different.

  According to the various embodiments of the present invention described above, those skilled in the art can easily make various changes, modifications and omissions within the scope of the technical idea and the viewpoint of the present invention. The above description is merely an example, and is not intended to be restrictive. The invention is limited only as defined in the following claims and the equivalents thereto.

It is a divided map image. It is a 1st display map showing the present position with respect to the area | region map information accumulate | stored previously. FIG. 3 is a first display map when the target position is set to a position close to the current position with respect to FIG. It is a functional block diagram of the portable terminal in this invention. It is a 2nd display map showing the present position with respect to the area | region map information accumulate | stored previously. It is a 3rd display map showing the present position with respect to the area | region map information accumulate | stored previously. It is a 4th display map showing the present position with respect to area map information accumulated beforehand. It is a 5th display map showing the present position with respect to area map information accumulated beforehand.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Portable terminal 101 Memory part 102 Positioning part 103 Area determination part 104 Direction detection part 105 Display control part 106 Display part 107 Portable terminal function part

Claims (8)

A mobile device that displays a map on a display,
Memory means for storing area map information in advance;
Positioning means for positioning the current position of the mobile terminal;
Area determination means for determining whether the current position is within or outside the area of the area map information including the target position ;
Azimuth detecting means for detecting the azimuth of the current position viewed from the target position of the area map information;
The map of the predetermined display range including the target position in the area map information and the direction are displayed on the display, and when the current position is in the area of the area map information, the map of the predetermined display range including the current position and the A portable terminal comprising display control means for switching according to a user operation so as to display a direction on a display . The direction detection means further detects a distance between the target position and the current position in the area map information,
The mobile terminal according to claim 1, wherein the display control unit further displays the distance.   The mobile terminal according to claim 1, wherein the target position is a position designated by a user or a center of the area map information.   The portable terminal according to claim 1, wherein the target position is a position within the area of the area map information and closest to the current position. A program for causing a computer mounted on a mobile terminal that displays a map to function, wherein the mobile terminal includes a memory unit that stores area map information in advance and a positioning unit that measures a current position of the mobile terminal. Have
Area determination means for determining whether the current position is within or outside the area of the area map information including the target position ;
Azimuth detecting means for detecting the azimuth of the current position viewed from the target position of the area map information;
The map of the predetermined display range including the target position in the area map information and the direction are displayed on the display, and when the current position is in the area of the area map information, the map of the predetermined display range including the current position and the A program for a portable terminal, which causes a computer to function as display control means for switching according to a user operation so as to display an azimuth on a display . The direction detection means further detects a distance between the target position and the current position in the area map information,
6. The program for a mobile terminal according to claim 5 , wherein the display control unit causes a computer to further display the distance. The program for a portable terminal according to claim 5 or 6 , wherein the computer functions so that the target position is a position designated by a user or a center of the area map information. The program for a portable terminal according to claim 5 or 6 , wherein the computer functions so that the target position is in a region of the area map information and is closest to the current position.

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