JP2011163845A - Navigation system using deformed map, navigation server, navigation device, method of navigation, computer program, and recording medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To relatively simply perform navigation using a deformed map. <P>SOLUTION: In this navigation server 100, a plurality of groups of split electronic map data and a plurality of groups of split deformed electronic map data, acquired by splitting electronic map data on an actual map and electronic map data on a deformed map into a plurality of unit domains, respectively, are severally stored in association with each other in a map data storage 132. A coordinate shift amount, which is a shift amount between the coordinate value of a reference point set on the split electronic map data and the coordinate value of a corresponding point corresponding to the reference point as to the deformed electronic map data, is stored in a coordinate shift amount storage 134 in each unit domain. By a controller 120, positional information indicating the present location of a cellular phone is acquired to determine split deformed electronic map data including the present location based on the positional information, and the coordinate value of the present location on the deformed electronic map data is calculated based on the shift amount. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a navigation system using a so-called deformed map, a navigation server, a navigation device, a navigation method, a computer program, and a recording medium.

  Conventionally, navigation devices using an electronic map have become widespread. In such a navigation device, an electronic map is displayed on a display screen included in the navigation device, and a mark indicating the current location of the navigation device on the electronic map is displayed.

  By the way, in recent years, a navigation device using a deformed map (simple map) created by deforming an actual map, that is, a map reflecting the positional relationship of actual features has been proposed (for example, the following patents). Reference 1). The deformed map is a map that has been subjected to a deforming process in which a road in an actual map is straightened, features are emphasized, or less important information is deleted from the actual map.

JP 2008-281349 A

  However, in the technique described in Patent Document 1, for a plurality of registered points (for example, points that become landmarks such as intersections and buildings), position data (XY coordinates) indicating the position of each registered point on a simple map. ) And position data (latitude and longitude) indicating the position of each registered point on the earth is required to be stored in the storage device. And the process which memorize | stores such registration point data in a memory | storage device was very complicated, and huge storage capacity was required.

  The present invention has been made to solve the above-described problems, and an object thereof is to provide a technique for performing navigation using a deformed map relatively easily.

  SUMMARY An advantage of some aspects of the invention is to solve at least a part of the problems described above, and the invention can be implemented as the following forms or application examples.

  Application Example 1 A navigation system including a navigation server and a mobile terminal connected to the navigation server via a network, the navigation server including coordinate values associated with latitude and longitude, The deformed map of the deformed map created by deforming the map including a plurality of divided electronic map data in which the electronic map data of the map reflecting the positional relationship of the features of the map is divided into a plurality of unit areas and the coordinate values A map data storage unit that stores a plurality of divided deformed electronic map data obtained by dividing map data into the plurality of unit areas, and a reference point set on the divided electronic map data And the corresponding point corresponding to the reference point on the divided deformed electronic map data. A coordinate deviation amount storage unit that stores a coordinate deviation amount that is a deviation amount from the standard value for each unit region, a position information acquisition unit that acquires position information indicating the current location of the mobile terminal, and the map data storage unit The divided electronic map data including the current location is specified from the plurality of divided electronic map data based on the position information, and the current location is included from the plurality of divided deformed electronic map data. A map data specifying unit that specifies the divided deformed electronic map data corresponding to the divided electronic map data, and a coordinate shift amount storage unit; a coordinate value of the current location on the specified divided electronic map data; And the identified divided deformed electronic map data based on the coordinate shift amount corresponding to the identified divided electronic map data. A current location calculation unit for calculating the coordinate value of the current location on the data, the identified divided deformed electronic map data, and the coordinate value of the current location calculated for the identified divided deformed electronic map data, A transmission unit that transmits to the mobile terminal, the mobile terminal includes a display unit, a position information detection unit that detects the position information, and a position information transmission unit that transmits the position information to the navigation server; Based on the divided deformed electronic map data and the coordinate value of the current location, which are transmitted from the navigation server, on the deformed map on the basis of the divided deformed electronic map data and the coordinate value of the current location. And a display control unit that synthesizes a mark indicating the current location and displays the resultant on the display unit. System.

  In the navigation system of Application Example 1, in the navigation server, the electronic map data of a map (hereinafter also referred to as a real map) reflecting the positional relationship of real features and the deformed electronic map data of the deformed map are respectively A plurality of divided electronic map data divided into a plurality of unit areas (so-called meshes) and a plurality of divided deformed electronic map data are stored in association with each other. Since the deformed map is a map obtained by deforming an actual map, the positional relationship of the features is not reflected more than the actual map. Further, “dividing into a plurality of unit areas” means that there are no overlapping areas or gaps between adjacent unit areas.

  Each divided electronic map data and each divided deformed electronic map data includes coordinate values (for example, XY coordinate values). And the coordinate value in division | segmentation electronic map data is matched with the latitude and longitude on the earth. For this reason, the navigation server can specify the divided electronic map data including the current location based on the position information (latitude and longitude) indicating the current location of the mobile terminal. Further, since the plurality of divided electronic map data and the plurality of divided deformed electronic map data are associated with each other, the divided deformed electronic map data corresponding to the specified divided electronic map data can be specified.

  On the other hand, in the navigation system of Application Example 1, in the navigation server, the coordinate values in the divided deformed electronic map data are not associated with the latitude and longitude on the earth. Instead, the coordinate value of the reference point (for example, the center point in the unit area) set on the divided electronic map data, and the coordinate value of the corresponding point corresponding to the reference point on the divided deformed electronic map data, Is stored for each unit area. The navigation server then determines the specified division based on the coordinate value of the reference point set on the specified divided electronic map data and the coordinate shift amount corresponding to the specified divided electronic map data. The coordinate value of the current location on the deformed electronic map data is calculated. This is because the difference between the coordinate value of the current location on the specified divided electronic map data and the coordinate value of the current location on the specified divided deformed electronic map data is the specified divided electronic map data. This is based on the consideration that the amount of deviation between the coordinate value of the reference point set above and the coordinate value of the corresponding point on the specified divided deformed electronic map data is approximately the same.

  Thereafter, the navigation server transmits the specified divided deformed electronic map data and the coordinate value of the current location calculated for the divided deformed electronic map data to the mobile terminal. At this time, in addition to the specified divided deformed electronic map data, the navigation server may transmit a plurality of divided deformed electronic maps corresponding to the surrounding area to the mobile terminal. Then, the mobile terminal can synthesize the mark indicating the current location on the deformed map based on the data received from the navigation server and display it on the display unit.

  According to the navigation system of the application example 1, in order to perform navigation using the deformed map, a huge number of registered points (for example, landmarks such as intersections and buildings) as in the technique described in Patent Document 1 above. Registration of position data (XY coordinates) indicating the position of each registered point on the simple map and position data (latitude and longitude) indicating the position of each registered point on the earth. There is no need to store the point data in the storage device. Therefore, navigation using the deformed map can be performed relatively easily.

  In the navigation system according to Application Example 1, it is preferable that the reference point is a center point on the divided electronic map data. By doing so, the coordinate value of the current location can be calculated with good balance for each divided deformed electronic map data.

  Application Example 2 In the navigation system according to Application Example 1, the mobile terminal further includes a transmission unit that transmits the electronic map data transmission request to the navigation server, and the navigation server further includes: A receiving unit that receives the transmission request from the mobile terminal, and when the receiving unit receives the transmission request, the map data specifying unit refers to the map data storage unit, and The divided electronic map data including the current location is specified, and the transmitting unit determines the coordinate value of the current location in the specified divided deformed electronic map data and the specified divided electronic map data. , Transmitted to the mobile terminal, and in the mobile terminal, the receiving unit transmits the divided power transmitted from the navigation server. The map data and the coordinate value of the current location are received, and the display control unit synthesizes a mark indicating the current location on the map based on the divided electronic map data and the coordinate value of the current location, A navigation system for displaying on the display unit.

  The navigation system according to the application example 2 can be switched between navigation using a deformed map and navigation using an actual map.

  Application Example 3 A navigation system including a navigation server and a mobile terminal connected to the navigation server via a network, the navigation server including coordinate values associated with latitude and longitude, The deformed map of the deformed map created by deforming the map including a plurality of divided electronic map data in which the electronic map data of the map reflecting the positional relationship of the features of the map is divided into a plurality of unit areas and the coordinate values A map data storage unit that stores a plurality of divided deformed electronic map data obtained by dividing map data into the plurality of unit areas, and a reference point set on the divided electronic map data And the corresponding point corresponding to the reference point on the divided deformed electronic map data. A coordinate deviation amount storage unit that stores a coordinate deviation amount that is a deviation amount from the standard value for each unit region, a position information acquisition unit that acquires position information indicating the current location of the mobile terminal, and the map data storage unit The divided electronic map data including the current location is specified from the plurality of divided electronic map data based on the position information, and the current location is included from the plurality of divided deformed electronic map data. A map data specifying unit that specifies the divided deformed electronic map data corresponding to the divided electronic map data, and a coordinate shift amount storage unit; a coordinate value of the current location on the specified divided electronic map data; And the identified divided deformed electronic map data based on the coordinate shift amount corresponding to the identified divided electronic map data. Based on the current location calculation unit for calculating the coordinate value of the current location on the data, the specified divided deformed electronic map data, and the coordinate value of the current location calculated for the specified divided deformed electronic map data A composite electronic map data generating unit for generating composite divided deformed electronic map data for displaying a deformed map combined with a mark indicating the current location on a display unit provided in the mobile terminal; and the composite divided deformed electronic map A transmission unit that transmits data to the mobile terminal, wherein the mobile terminal includes a display unit, a position information detection unit that detects the position information, and a position information transmission that transmits the position information to the navigation server. And the composite divided deformed electronic map data transmitted from the navigation server And a display control unit that displays a deformed map in which the mark indicating the current location is combined based on the combined divided deformed electronic map data on the display unit.

  The navigation system of application example 3 is different from the navigation system of application example 1 in the following points. That is, in the navigation system of Application Example 3, the navigation server generates the composite divided deformed electronic map data and transmits it to the mobile terminal, and the mobile terminal side is based on the composite divided deformed electronic map data received from the navigation server. The deformed map in which the mark indicating the current location of the mobile terminal is combined is displayed on the display unit. That is, the mobile terminal does not synthesize a mark indicating the current location of the mobile terminal on the deformed map. Also in this way, as in the navigation system of Application Example 1, in order to perform navigation using the deformed map, a huge number of registered points (for example, intersections) are used as in the technique described in Patent Document 1 above. Location data (XY coordinates) indicating the location of each registered location on a simple map and location data (latitude and longitude) indicating the location of each registered location on the earth. It is not necessary to store the registration point data in association with Therefore, navigation using the deformed map can be performed relatively easily.

  Application Example 4 In the navigation system according to Application Example 3, the mobile terminal further includes a transmission unit that transmits the transmission request for the electronic map data to the navigation server, and the navigation server further includes: A receiving unit that receives the transmission request from the mobile terminal, and when the receiving unit receives the transmission request, the map data specifying unit refers to the map data storage unit, and The divided electronic map data including information on the current location is specified, and the composite electronic map data generation unit is configured to specify the divided electronic map data and the specified divided electronic map data in the specified divided electronic map data. Based on the coordinate value of the current location, a map in which a mark indicating the current location is synthesized is displayed on a display unit provided in the mobile terminal. Composite electronic map data is generated, the transmission unit transmits the synthetic electronic map data to the mobile terminal, and the reception unit transmits the composite electronic map data transmitted from the navigation server in the mobile terminal. The navigation system which receives data, and the display control unit displays a map in which a mark indicating the current location is combined on the display unit based on the combined electronic map data.

  The navigation system according to the application example 4 can switch between navigation using a deformed map and navigation using an actual map.

  [Application Example 5] A navigation server that includes coordinate values associated with latitude and longitude, and a plurality of electronic map data of a map that reflects the positional relationship of actual features divided into a plurality of unit areas. The divided electronic map data is associated with each of the plurality of divided deformed electronic map data including the coordinate values and the deformed electronic map data of the deformed map created by deforming the map into the plurality of unit areas. Map data storage unit stored in a state of being stored, coordinate values of reference points set on the divided electronic map data, and coordinate values of corresponding points corresponding to the reference points on the divided deformed electronic map data A coordinate shift amount storage unit for storing a coordinate shift amount that is a shift amount for each unit area, and a position for acquiring position information indicating the current location of the mobile terminal The information acquisition unit and the map data storage unit are referred to, and based on the position information, the divided electronic map data including the current location is specified from the plurality of divided electronic map data, and the plurality of divided deformation data Refer to the map data specifying unit for specifying the divided deformed electronic map data corresponding to the divided electronic map data including the current location from the electronic map data, and the coordinate shift amount storage unit, and the specified divided electrons Based on the coordinate value of the reference point on map data and the coordinate shift amount corresponding to the specified divided electronic map data, the coordinate value of the current location on the specified divided deformed electronic map data A current location calculation unit that calculates the specified deformed deformed electronic map data, and the specified previous Navigation server comprising a coordinate value of the current position calculated for division deformed electronic map data, a transmission section that transmits to the mobile terminal.

  By the navigation server of application example 5, the navigation system of application example 1 described above can be constructed.

  [Application Example 6] A navigation server that includes coordinate values associated with latitude and longitude, and includes a plurality of electronic map data of a map that reflects the positional relationship of actual features divided into a plurality of unit areas. The divided electronic map data is associated with each of the plurality of divided deformed electronic map data including the coordinate values and the deformed electronic map data of the deformed map created by deforming the map into the plurality of unit areas. Map data storage unit stored in a state of being stored, coordinate values of reference points set on the divided electronic map data, and coordinate values of corresponding points corresponding to the reference points on the divided deformed electronic map data A coordinate shift amount storage unit for storing a coordinate shift amount, which is a shift amount for each unit area, and position information indicating the current location of the mobile terminal. The position information acquisition unit and the map data storage unit are referred to, and based on the position information, the divided electronic map data including the current location is specified from the plurality of divided electronic map data, and the plurality of divisions The map data specifying unit that specifies the divided deformed electronic map data corresponding to the divided electronic map data including the current location from the deformed electronic map data, and the coordinate shift amount storage unit, and the specified divided Based on the coordinate value of the current location on the electronic map data and the coordinate shift amount corresponding to the specified divided electronic map data, the coordinate value of the current location on the specified divided deformed electronic map data A current location calculation unit that calculates the divided deformed electronic map data identified, and the identified Based on the coordinate value of the current location calculated for the divided deformed electronic map data, combined divided deformed electronic map data for displaying a deformed map in which a mark indicating the current location is combined on a display unit included in the mobile terminal. A navigation server comprising: a composite electronic map data generation unit that generates a transmission unit; and a transmission unit that transmits the composite divided deformed electronic map data to the mobile terminal.

  The navigation system of the application example 3 described above can be constructed by the navigation server of the application example 6.

  Application Example 7 A navigation device, which includes a display unit, coordinate values associated with latitude and longitude, and electronic map data of a map reflecting the positional relationship of actual features is divided into a plurality of unit regions A plurality of divided electronic map data including coordinate values, and a plurality of divided deformed electronic map data obtained by deforming the deformed map generated by deforming the map into the plurality of unit areas. A map data storage unit stored in an associated state, a coordinate value of a reference point set on the divided electronic map data, and a correspondence corresponding to the reference point on the divided deformed electronic map data A coordinate shift amount storage unit that stores a coordinate shift amount that is a shift amount with respect to a coordinate value of a point for each unit area, and a current location of the navigation device While referring to the position information detection unit for detecting position information and the map data storage unit, based on the position information, the divided electronic map data including the current location is specified from among the plurality of divided electronic map data A map data specifying unit for specifying the divided deformed electronic map data corresponding to the divided electronic map data including the current location from among the plurality of divided deformed electronic map data, and referring to the coordinate shift amount storage unit, Based on the coordinate value of the current location on the identified divided electronic map data and the coordinate shift amount corresponding to the identified divided electronic map data, the identified divided deformed electronic map data A current location calculation unit for calculating a coordinate value of the current location, the identified divided deformed electronic map data, and And a display control unit configured to synthesize a mark indicating the current location on a deformed map based on the coordinate value of the current location calculated for the identified divided deformed electronic map data, and to display on the display unit; A navigation device comprising:

  According to the navigation device of the application example 7, as in the navigation system of the application example 1 described above, a vast number of registration points (for example, points that become landmarks such as intersections and buildings) It is necessary to store in the storage device registration point data in which position data (XY coordinates) indicating the position on the simple map and position data (latitude and longitude) indicating the position of each registered point on the earth are associated with each other. Absent. Therefore, navigation using the deformed map can be performed relatively easily.

  The present invention does not necessarily have all the various features described above, and may be configured by omitting some of them or combining them appropriately. The present invention can also be configured as an invention of a navigation method in addition to the configuration as the above-described navigation system, navigation server, and navigation device. Further, the present invention can be realized in various modes such as a computer program that realizes these, a recording medium that records the program, and a data signal that includes the program and is embodied in a carrier wave. In addition, in each aspect, it is possible to apply the various additional elements shown above.

  When the present invention is configured as a computer program or a recording medium recording the program, the entire program for controlling the operation of the navigation server or the navigation apparatus may be configured, or only the portion that performs the functions of the present invention. It is good also as what comprises. The recording medium includes a flexible disk, a CD-ROM, a DVD-ROM, a magneto-optical disk, an IC card, a ROM cartridge, a punch card, a printed matter on which a code such as a barcode is printed, a computer internal storage device (RAM or Various types of computer-readable media such as a memory such as a ROM and an external storage device can be used.

It is explanatory drawing which shows schematic structure of the navigation system 1000 as one Example of this invention. It is explanatory drawing which shows schematic structure of the navigation server 100 of 1st Example. It is explanatory drawing which shows typically the electronic map data and deformed electronic map data of the actual map memorize | stored in the map data storage part. It is explanatory drawing which shows the data which the coordinate deviation | shift amount memory | storage part 134 memorize | stores. 2 is an explanatory diagram showing a schematic configuration of a mobile phone 200. FIG. It is a flowchart which shows the flow of the navigation process in the navigation system 1000 of 1st Example. 7 is an explanatory diagram showing an example of a deformation map display screen SCR displayed on the display panel 202 based on data received from the navigation server 100 by the main control unit 210 of the mobile phone 200. It is explanatory drawing which shows schematic structure of the navigation server 100A of 2nd Example. It is a flowchart which shows the flow of the navigation process in the navigation system of 2nd Example. It is explanatory drawing which shows the structure of 200 A of mobile telephones of 3rd Example. It is a flowchart which shows the flow of the navigation process in 200 A of mobile telephones.

Hereinafter, embodiments of the present invention will be described in the following order based on examples.
A. First embodiment:
A1. Navigation system configuration:
A2. Navigation server configuration:
A3. Mobile phone configuration:
A4. Navigation process:
B. Second embodiment:
B1. Navigation server configuration:
B2. Navigation process:
C. Third embodiment:
C1. Mobile phone configuration:
C2. Navigation process:
D. Variations:

A. First embodiment:
A1. Navigation system configuration:
FIG. 1 is an explanatory diagram showing a schematic configuration of a navigation system 1000 as an embodiment of the present invention. The navigation system 1000 includes a navigation server 100 and a mobile phone 200. These are connected to each other via the Internet INT and a relay station (not shown). The navigation system 1000 according to the present embodiment performs navigation using a deformed map created by deforming a map (hereinafter referred to as a real map) reflecting the positional relationship of actual features. A deformed map is a map that has been subjected to a deforming process that straightens roads in an actual map, emphasizes features, and deletes less important information from the actual map. Such a deformed map is advantageous in that it is easy to view because the positional relationship of features is different from that of an actual map, but unnecessary features are not drawn for the user.

  Although detailed description is omitted, the navigation system 1000 can perform a route search from the current location of the mobile phone 200 to the destination using an actual map, and can perform navigation from the current location to the destination. is there. Hereinafter, various configurations for performing navigation using the deformed map will be described, and description of configurations for realizing other functions such as the route search will be omitted.

A2. Navigation server configuration:
FIG. 2 is an explanatory diagram showing a schematic configuration of the navigation server 100 of the first embodiment. The navigation server 100 includes a communication unit 110, a control unit 120, and a storage unit 130.

  The communication unit 110 communicates with the mobile phone 200 via the Internet INT. Specifically, as will be described later, the communication unit 110 receives position information (latitude and longitude) indicating the current location of the mobile phone 200 from the mobile phone 200, and data for performing navigation using a deformed map. Or transmitted to the mobile phone 200. The mobile phone 200 corresponds to a mobile terminal in [Means for Solving the Problems].

  The storage unit 130 includes a map data storage unit 132 and a coordinate deviation amount storage unit 134. The map data storage unit 132 stores electronic map data of an actual map and deformed electronic map data of a deformed map. In this embodiment, map image data composed of vector data that is relatively easy to process is used as the electronic map data and the deformed electronic map data. Also, the coordinate deviation amount storage unit 134 is the deviation amount between the coordinate value of the reference point set on the electronic map data of the actual map and the coordinate value of the corresponding point corresponding to the reference point on the deformed electronic map. Is remembered. These will be described below.

  FIG. 3 is an explanatory diagram schematically showing the actual map electronic map data and the deformed electronic map data stored in the map data storage unit 132. In the illustrated example, the electronic map data of the actual map and the deformed electronic map data for a certain area on the map are schematically shown. In FIG. 3, drawing of features on each map is omitted in consideration of the visibility of the figure.

  As shown in the figure, the electronic map data of the actual map (see the left side of FIG. 3) and the deformed electronic map data (see the right side of FIG. 3) are each divided into a plurality of unit areas (so-called meshes) and managed. Has been. In the illustrated example, as indicated by broken lines, electronic map data and deformed electronic map data for nine unit areas are schematically shown. In the present embodiment, the shape of the unit region is a square, but may be another shape (for example, a rectangular shape, a polygon such as a hexagon, or an elliptical shape). Hereinafter, the electronic map data of each unit area is referred to as divided electronic map data. Further, the deformed electronic map data of each unit area is referred to as divided deformed electronic map data.

  Each divided electronic map data and each divided deformed electronic map data are given an ID (mesh No.) for identifying them. In the illustrated example, “Mr1” to “Mr9” are assigned to each of the nine electronic map data as “mesh No.”. Further, “Md1” to “Md9” are assigned as “mesh No.” to the nine deformed electronic map data, respectively. And each division | segmentation electronic map data about the same unit area | region and each division | segmentation deformation electronic map data are matched by "mesh No.". For example, the illustrated deformed electronic map data having “Mesh No.” of “Md1” corresponds to the divided electronic map data having “Mesh No.” of “Mr1”.

  Each divided electronic map data and each divided deformed electronic map data each include a coordinate value. In this embodiment, XY coordinate values are used as the coordinate values, and the upper left point shown in the figure is the origin (0, 0) in each divided electronic map data and each divided deformed electronic map data. In addition to the XY coordinate values, other coordinate values may be used. And the coordinate value in each electronic map data is matched with the latitude and longitude on the earth. On the other hand, the coordinate values in each deformed electronic map data are not associated with the latitude and longitude on the earth.

  A reference point is set on each divided electronic map data. In the illustrated example, reference points Pr1 to Pr9 are set for the divided electronic map data having “Mesh No.” of “Mr1” to “Mr9”, respectively. In this embodiment, each reference point is a center point on each divided electronic map data. Since the deformed map is a deformed real map, the corresponding points Pd1 to Pd9 respectively corresponding to the reference points Pr1 to Pr9 described above on the deformed electronic map data as shown on the right side of FIG. Is generally different from the coordinate values on the electronic map data. That is, generally, in the divided deformed electronic map data, the corresponding point is not a central point.

  2 corresponds to the coordinate values of the reference points Pr1 to Pr9 set on the divided electronic map data and the reference points Pr1 to Pr9 on the divided deformed electronic map data. A deviation amount from the coordinate values of the corresponding points Pd1 to Pd9 is stored for each unit area.

  FIG. 4 is an explanatory diagram showing data stored in the coordinate deviation amount storage unit 134. FIG. 4A shows the coordinate value of the reference point in each divided electronic map data. FIG. 4B shows the coordinate values of the corresponding points corresponding to the reference points in each divided electronic map data in each divided deformed electronic map data. FIG. 4C shows the amount of deviation between the coordinate value of the reference point in each electronic map data and the coordinate value of the corresponding point corresponding to the reference point in each divided electronic map data in each deformed electronic map data. The amount of coordinate deviation is shown. As shown in FIG. 4C, the coordinate shift amount (dx, dy) is a difference between FIG. 4A and FIG. 4B.

  The control unit 120 (see FIG. 2) includes a CPU, a RAM, and a ROM (not shown). When the CPU executes a predetermined computer program, the position information acquisition unit 122, the map data specifying unit 124, It functions as a current location calculation unit 126 and a transmission map data selection unit 128.

  The location information acquisition unit 122 acquires location information (latitude and longitude) indicating the current location of the mobile phone 200 received by the communication unit 110 from the mobile phone 200.

  The map data specifying unit 124 refers to the map data storage unit 132 and, based on the position information acquired by the position information acquisition unit 122, from among a plurality of divided electronic map data stored in the map data storage unit 132. Then, the divided electronic map data including the current location of the mobile phone 200 is specified. As described above, since the coordinate values in the divided electronic map data are associated with the latitude and longitude on the earth, the map data specifying unit 124 has the location information (latitude and longitude) of the current location of the mobile phone 200. Based on this, it is possible to specify the divided electronic map data including the current location of the mobile phone 200. The map data specifying unit 124 refers to the map data storage unit 132 and corresponds to the specified divided electronic map data from among the plurality of divided deformed electronic map data stored in the map data storage unit 132. The divided deformed electronic map data to be specified is specified.

  The current location calculation unit 126 refers to the coordinate shift amount storage unit 134 and corresponds to the coordinate value of the reference point set on the identified divided electronic map data and the identified divided electronic map data. Based on the coordinate shift amount, the coordinate value of the current location of the mobile phone 200 on the identified divided deformed electronic map data is calculated. For example, the “mesh No.” of the divided electronic map data including the current location of the mobile phone 200 is specified as “Mr1”, and the coordinate value of the current location of the mobile phone 200 in the divided electronic map data is (xp, yp). In a case, the “mesh No.” of the divided deformed electronic map data including the current location of the mobile phone 200 is specified as “Md1”, and the coordinate value of the current location of the mobile phone 200 in the divided deformed electronic map data is (xp− dx, yp-dy). This is because the deviation amount between the coordinate value of the current location of the mobile phone 200 on the specified divided electronic map data and the coordinate value of the current location of the mobile phone 200 on the specified divided deformed electronic map data is In consideration that the difference between the coordinate value of the reference point set on the divided electronic map data and the coordinate value of the corresponding point on the specified divided deformed electronic map data is approximately the same. Based.

  The transmission map data selection unit 128 includes the specified divided deformed electronic map data in order to display the deformed map and the current location of the mobile phone 200 on the deformed map on the display panel 202 of the mobile phone 200. Select a plurality of divided deformed electronic map data. In the present embodiment, the transmission map data selection unit 128 selects a plurality of divided deformed electronic map data as described above, but selects only the specified divided deformed electronic map data. May be.

  Then, the control unit 120 displays the coordinate values of the current location of the mobile phone 200 on the plurality of divided deformed electronic map data selected by the transmission map data selecting unit 128 and the specified divided deformed electronic map data. By 110, the data is transmitted to the mobile phone 200.

A3. Mobile phone configuration:
FIG. 5 is an explanatory diagram showing a schematic configuration of the mobile phone 200. The cellular phone 200 includes a current location detection unit 201, a display panel 202, an audio output unit 203, a vibration mechanism 204, a communication unit 205, a command input unit 206, a clock unit 209, a main control unit 210, a call And a control unit 220.

  The current location detection unit 201 detects the current position of the mobile phone 200. In this embodiment, a GPS unit is used as the current location detection unit 201. The GPS unit is a unit including a GPS antenna for receiving a radio wave from a GPS (Global Positioning System / Global Positioning System) artificial satellite. Based on the radio wave from the artificial satellite received by a GPS antenna (not shown), The current position of the mobile phone 200 is detected. The current position of the mobile phone 200 is detected by a method using DGPS (differential GPS), a method using radio waves from a radio base station such as a mobile phone or PHS, or a method using or using a gyro sensor. May be applied.

  The display panel 202 is a device that displays an image. Examples of the display panel 202 include a liquid crystal panel and an organic EL panel. The voice output unit 203 is a device including a speaker, and is a device that outputs a message to a user such as route guidance, a melody, and the like by voice. The vibration mechanism 204 is a device that can prompt the user's attention with a predetermined pattern of vibration.

  The communication unit 205 communicates with the navigation server 100 via the Internet INT to transmit / receive information. The command input unit 206 includes a numeric keypad 206a and a cursor key 206b (see FIG. 1). Further, the command input unit 206 may be provided with a touch sensor (touch panel) on the display panel 202 and input an output of the touch sensor. The user of the mobile phone 200 inputs information and instructions to the mobile phone 200 by operating the numeric keys 206a, the cursor keys 206b, and the touch panel.

  The clock unit 209 outputs current time information indicating the current time in response to a request from the main control unit 210. The call control unit 220 is a circuit that performs an incoming call for a call, a voice / electrical signal conversion, and the like.

  The main control unit 210 is a control unit for controlling each unit of the mobile phone 200. The main control unit 210 includes a CPU, a RAM, and a ROM that are used to control each unit of the mobile phone 200. For example, the main control unit 210 controls each unit of the mobile phone 200 by causing the CPU to execute application software for navigation. From the navigation server 100, the main control unit 210 determines the deformed map and the current location of the mobile phone 200 on the deformed map. Data for display can be acquired, and the deformed map and the current location of the mobile phone 200 on the deformed map can be displayed on the display panel 202 based on the data.

A4. Navigation process:
FIG. 6 is a flowchart showing the flow of navigation processing in the navigation system 1000 of the first embodiment. The flow of processing executed by the mobile phone 200 is shown on the left side of FIG. Moreover, the flow of the process performed by the navigation server 100 is shown on the right side of FIG.

  When application software for navigation using a deformed map is activated in the mobile phone 200, the current location detection unit 201 detects position information (latitude and longitude) indicating the current location of the mobile phone 200 (step S100). Then, the cellular phone 200 transmits the location information of the current location of the cellular phone 200 to the navigation server 100 through the communication unit 205 (step S110).

  In the navigation server 100, when the communication unit 110 receives the location information of the current location of the mobile phone 200 from the mobile phone 200 (step S200), and the location information acquisition unit 122 acquires the location information, the map data specifying unit 124 is obtained. Refers to the map data storage unit 132 and, based on the location information acquired by the location information acquisition unit 122, from among the plurality of divided electronic map data stored in the map data storage unit 132, The divided electronic map data including the current location is specified (step S210). Further, the map data specifying unit 124 refers to the map data storage unit 132, and from among the plurality of divided deformed electronic map data stored in the map data storage unit 132, the divided electronic map including the current location of the mobile phone 200. The divided deformed electronic map data corresponding to the data is specified (step S210).

  Then, the navigation server 100 refers to the coordinate shift amount storage unit 134 by the current location calculation unit 126, and the coordinate value of the reference point set on the specified divided electronic map data and the specified division Based on the coordinate shift amount corresponding to the electronic map data, the coordinate value of the current location of the mobile phone 200 on the specified divided deformed electronic map data is calculated (step S220).

  The navigation server 100 then uses the transmission map data selection unit 128 to display the deformed map and the current location of the mobile phone 200 on the deformed map on the display panel 202 included in the mobile phone 200. A plurality of surrounding divided deformed electronic map data including map data are selected (step S230). In the present embodiment, the transmission map data selection unit 128 selects a plurality of divided deformed electronic map data as described above, but selects only the specified divided deformed electronic map data. May be.

  The navigation server 100 uses the communication unit 110 to obtain the coordinate values of the current location of the mobile phone 200 on the plurality of divided deformed electronic map data selected in step S230 and the divided deformed electronic map data calculated in step S220. And transmitted to the mobile phone 200 (step S240).

  In the mobile phone 200, when the communication unit 205 receives from the navigation server 100 the plurality of divided deformed electronic map data and the coordinate value of the current location of the mobile phone 200 on the divided deformed electronic map data (step S120). Based on the received data, control unit 210 combines the deformed map and a mark indicating the current location of mobile phone 200 on the deformed map and displays them on display panel 202 (step S130).

  FIG. 7 is an explanatory diagram illustrating an example of a deformation map display screen SCR displayed on the display panel 202 based on data received from the navigation server 100 by the main control unit 210 of the mobile phone 200.

  As shown in the drawing, for example, the display screen SCR includes a railroad track, a railway station (“OO station”), a road, and a building that tends to be a landmark (in the illustrated example, “gas station (GS)”). ”,“ Convenience Store (CS) ”,“ XX Bank ”,“ Post Office (〒) ”,“ XX Bookstore ”) and a current location mark Mp indicating the current location of the mobile phone 200 Is displayed. As can be seen from the unit area (mesh) indicated by the broken line on the display screen SCR, the main control unit 210 of the mobile phone 200 has a numeric keypad 206a or a cursor by the user of the mobile phone 200. By operating the keys 206b or the touch panel, the deformed map can be displayed by appropriately rotating or enlarging / reducing, for example, according to the traveling direction.

  According to the navigation system 1000 of the first embodiment described above, in order to perform navigation using a deformed map, a huge number of registration points (for example, intersections and Position data (XY coordinates) indicating the position of each registered point on the simple map, and position data (latitude and longitude) indicating the position of each registered point on the earth It is not necessary to store the registration point data associated with the data in the storage device. Therefore, navigation using the deformed map can be performed relatively easily.

B. Second embodiment:
The navigation system (not shown) of the second embodiment includes a navigation server 100A instead of the navigation server 100 in the navigation system 1000 of the first embodiment. In the navigation system of the second embodiment, part of the navigation process is different from that of the first embodiment. Hereinafter, the navigation server 100A of the second embodiment and the navigation process will be described.

B1. Navigation server configuration:
FIG. 8 is an explanatory diagram showing a schematic configuration of the navigation server 100A of the second embodiment. The navigation server 100A includes a control unit 120A instead of the control unit 120 in the navigation server 100 (see FIG. 2) of the first embodiment. In the navigation server 100A, the configuration other than the control unit 120A is the same as that of the navigation server 100 of the first embodiment.

  120 A of control parts are provided with the synthetic | combination electronic map data generation part 129 in addition to the function of the control part 120 in the navigation server 100 of 1st Example. The composite electronic map data generation unit 129 includes the divided deformed electronic map data specified by the map data specifying unit 124 and the coordinate value of the current location of the mobile phone 200 calculated by the current location calculating unit 126 for the divided deformed electronic map data. Based on the above, the composite divided deformed electronic map data for displaying the deformed map combined with the mark indicating the current location of the mobile phone 200 on the display panel 202 of the mobile phone 200 is generated. Then, the control unit 120A transmits a plurality of divided deformed electronic map data including the composite divided deformed map data to the mobile phone 200 by the communication unit 110.

B2. Navigation process:
FIG. 9 is a flowchart showing the flow of navigation processing in the navigation system of the second embodiment. The flow of processing executed by the mobile phone 200 is shown on the left side of FIG. Further, the flow of processing executed by the navigation server 100A is shown on the right side of FIG.

  As can be seen from the comparison between FIG. 6 and FIG. 9, in the navigation process in the navigation system of the second embodiment, steps S100, 110 executed by the mobile phone 200 and steps S200-S230 executed by the navigation server 100A. These are the same as the navigation processing in the navigation system 1000 of the first embodiment. Therefore, description of the processes in these common steps is omitted.

  After step S230, navigation server 100A displays a mark indicating the current location of mobile phone 200 based on the divided deformed electronic map data identified in step S210 and the coordinate value of the current location of mobile phone 200 calculated in step S220. The composite electronic map data generation unit 129 generates composite divided deformed electronic map data for displaying the deformed map combined with is displayed on the display panel 202 of the mobile phone 200 (step S250).

  Then, the navigation server 100A transmits a plurality of divided deformed electronic map data including the composite divided deformed electronic map data to the mobile phone 200 through the communication unit 110 (step S260).

  In the mobile phone 200, when the communication unit 205 receives a plurality of divided deformed electronic map data including the composite divided deformed electronic map data from the navigation server 100A (step S140), the main control unit 210, based on the received data. Then, the deformed map in which the mark indicating the current location of the mobile phone 200 is combined is displayed on the display panel 202 (step S150).

  As with the navigation system 1000 of the first embodiment, the navigation system of the second embodiment described above is also enormous as in the technique described in Patent Document 1 described above in order to perform navigation using a deformed map. For a large number of registered points (for example, points that become landmarks such as intersections and buildings), position data (XY coordinates) indicating the position of each registered point on the simplified map and the position of each registered point on the earth It is not necessary to store the registration point data in which the position data (latitude and longitude) indicating is stored in the storage device. Therefore, navigation using the deformed map can be performed relatively easily.

C. Third embodiment:
In the first embodiment, the navigation system 1000 using the deformed map is configured by the navigation server 100 and the mobile phone 200. On the other hand, in the second embodiment, the mobile phone 200A alone functions as a navigation device using a deformed map.

C1. Mobile phone configuration:
FIG. 10 is an explanatory diagram showing the configuration of the mobile phone 200A of the third embodiment. This cellular phone 200A has the functions of the cellular phone 200 of the first embodiment and part of the functions of the navigation server 100. That is, the mobile phone 200A includes a current location detection unit 201, an audio output unit 203, a vibration mechanism 204, a communication unit 205, a command input unit 206, a clock unit 209, a main control unit 210, and a call control unit 220. And a storage unit 230.

  The storage unit 230 includes a map data storage unit 232 and a coordinate deviation amount storage unit 234. The data stored in the map data storage unit 232 and the coordinate deviation amount storage unit 234 included in the storage unit 230 is data downloaded as necessary from the navigation server 100 in the first embodiment. This is the same data as the data stored in the map data storage unit 132 and the coordinate deviation storage unit 134 provided in the storage unit 130 of the navigation server 100 in the first embodiment.

  The main control unit 210 includes a control unit 212 for performing navigation using a deformed map. The control unit 212 functions as a position information acquisition unit 212a, a map data identification unit 212b, a current location calculation unit 212c, and a display map data selection unit 212d when the CPU executes a predetermined computer program. Note that the functions of the position information acquisition unit 212a, the map data identification unit 212b, the current location calculation unit 212c, and the display map data selection unit 212d are the position information provided in the control unit 120 of the navigation server 100 in the first embodiment. The functions of the acquiring unit 122, the map data specifying unit 124, the current location calculating unit 126, and the transmission map data selecting unit 128 are the same.

C2. Navigation Process FIG. 11 is a flowchart showing the flow of the navigation process in the mobile phone 200A.

  When application software for navigation using a deformed map is activated in mobile phone 200A, current location detection unit 201 detects position information (latitude and longitude) indicating the current location of mobile phone 200A (step S300).

  Then, the location information acquisition unit 212a acquires this location information, and the map data identification unit 212b refers to the map data storage unit 232 and stores the map data based on the location information acquired by the location information acquisition unit 212a. The divided electronic map data including the current location of the mobile phone 200A is specified from the plurality of divided electronic map data stored in the unit 232 (step S310). Further, the map data specifying unit 212b refers to the map data storage unit 232, and from among the plurality of divided deformed electronic map data stored in the map data storage unit 232, the divided electronic map including the current location of the mobile phone 200A The divided deformed electronic map data corresponding to the data is specified (step S310).

  Then, the current location calculation unit 212c refers to the coordinate deviation amount storage unit 234, and sets the coordinate value of the reference point set on the identified divided electronic map data and the identified divided electronic map data. Based on the corresponding coordinate shift amount, the coordinate value of the current location of the mobile phone 200A on the specified divided deformed electronic map data is calculated (step S320).

  Then, the display map data selection unit 212d includes a plurality of peripheral divisions including the specified divided deformed electronic map data in order to display the deformed map and the current location of the mobile phone 200A on the deformed map on the display panel 202. Deformed electronic map data is selected (step S330). In the present embodiment, the display map data selection unit 212d selects a plurality of divided deformed electronic map data as described above, but selects only the specified divided deformed electronic map data. May be.

  The control unit 212 then deforms the deformed map based on the plurality of divided deformed electronic map data selected in step S330 and the coordinate value of the current location of the mobile phone 200A on the divided deformed electronic map data calculated in step S320. And a mark indicating the current location of the mobile phone 200A on the deformed map are combined and displayed on the display panel 202 as shown in FIG. 7 (step S340).

  Also with the mobile phone 200A of the third embodiment described above, navigation using the deformed map is relatively simple, as with the navigation system 1000 of the first embodiment and the navigation system of the second embodiment described above. It can be carried out.

D. Variations:
Although the embodiments of the present invention have been described above, the present invention is not limited to such embodiments, and can be implemented in various modes without departing from the scope of the present invention. For example, the following modifications are possible.

D1. Modification 1:
In the first embodiment, the mobile phone 200 is used as the mobile terminal, but the present invention is not limited to this. Instead of the cellular phone 200, a GPS unit, a display panel, a portable information terminal including a control unit that executes application software for navigation, a so-called car navigation device mounted on a vehicle, a PND (Personal Navigation Device) , Portable Navigation Device).

D2. Modification 2:
In the first embodiment, the navigation using the deformed map is performed by one navigation server 100, but the present invention is not limited to this. The function of the navigation server 100 may be configured by a plurality of servers. The same applies to the navigation server 100A in the navigation system of the second embodiment.

  In the navigation system 1000 of the first embodiment, a part of the functions of the navigation server 100 may be provided in the mobile phone 200 as a mobile terminal. The same applies to the navigation system of the second embodiment.

D3. Modification 3:
In the above embodiment, the reference point set on each divided electronic map data is the center point on each divided electronic map data, but the present invention is not limited to this. A point other than the center point may be used as the reference point. Moreover, you may make it set a different reference point for every division | segmentation electronic map data.

D4. Modification 4:
In the navigation system 1000 of the first embodiment, the navigation system of the second embodiment, and the mobile phone 200A of the third embodiment, the mobile phone 200, the display panel 202 of the mobile phone 200A, the deformed map, and the current location Although the mark Mp is displayed, it can be switched so that the current location mark Mp is displayed on the actual map by the operation of the numeric keypad 206a, the cursor key 206b, or the touch panel by the user of the mobile phone 200 or 200A. Good.

D5. Modification 5:
In the above embodiment, the navigation using the deformed map is performed based on the current location of the mobile phones 200 and 200A, but the present invention is not limited to this. For example, in addition to the current location of the mobile phones 200 and 200A, a destination and one or more waypoints may be set, and navigation using a deformed map may be performed based on these.

D6. Modification 6:
In the above embodiment, the mobile phones 200 and 200A detect the current location using GPS, but the present invention is not limited to this. For example, GLONASS (Global Navigation Satellite System) and other satellite positioning systems (Satellite Navigation System) such as Galileo, in other words, Global Navigation Satellite System (GNSS) may be used. Good.

D7. Modification 7:
In the above embodiment, a part of the configuration realized by hardware may be replaced with software, and conversely, a part of the configuration realized by software may be replaced by hardware. For example, the control circuit may execute a part of application software functions included in the mobile phones 200 and 200A.

DESCRIPTION OF SYMBOLS 1000 ... Navigation system 100,100A ... Navigation server 110 ... Communication part 120 ... Control part 122 ... Position information acquisition part 124 ... Map data specific part 126 ... Present location calculation part 128 ... Transmission map data selection part 129 ... Synthetic electronic map data generation part DESCRIPTION OF SYMBOLS 130 ... Memory | storage part 132 ... Map data memory | storage part 134 ... Coordinate deviation | shift amount memory | storage part 200,200A ... Mobile phone 201 ... Present location detection part 202 ... Display panel 203 ... Audio | voice output part 204 ... Vibration mechanism 205 ... Communication part 206 ... Command input part 206a ... Numeric keypad 206b ... Cursor key 209 ... Clock unit 210 ... Main control unit 212 ... Control unit 212a ... Position information acquisition unit 212b ... Map data specifying unit 212c ... Current location calculation unit 212d ... Display map data selection unit 220 ... Call control unit 230 ... Storage unit 232 Map data storage unit 234 ... coordinate shift amount storage unit INT ... Internet SCR ... display screen Pr1～Pr9 ... reference point Pd1～Pd9 ... corresponding point Mp ... it is here marked

Claims (14)

A navigation system comprising a navigation server and a mobile terminal connected to the navigation server via a network,
The navigation server
Including the coordinate values associated with the latitude and longitude, including a plurality of divided electronic map data in which the electronic map data of the map reflecting the positional relationship of the actual features is divided into a plurality of unit areas, and the coordinate value, A map data storage unit in which deformed electronic map data of a deformed map created by deforming the map is stored in association with a plurality of divided deformed electronic map data divided into the plurality of unit areas. When,
A coordinate shift amount, which is a shift amount between the coordinate value of the reference point set on the divided electronic map data and the coordinate value of the corresponding point corresponding to the reference point on the divided deformed electronic map data, A coordinate shift amount storage section for storing each area;
A location information acquisition unit that acquires location information indicating the current location of the mobile terminal;
The map data storage unit is referred to, and based on the position information, the divided electronic map data including the current location is specified from the plurality of divided electronic map data, and among the plurality of divided deformed electronic map data, A map data specifying unit for specifying the divided deformed electronic map data corresponding to the divided electronic map data including the current location;
With reference to the coordinate deviation amount storage unit, based on the coordinate value of the current location on the identified divided electronic map data and the coordinate deviation amount corresponding to the identified divided electronic map data, A current location calculation unit for calculating a coordinate value of the current location on the specified divided deformed electronic map data;
A transmitting unit that transmits the identified divided deformed electronic map data and the coordinate value of the current location calculated for the identified divided deformed electronic map data to the mobile terminal;
With
The mobile terminal
A display unit;
A position information detector for detecting the position information;
A position information transmission unit for transmitting the position information to the navigation server;
The divided deformed electronic map data transmitted from the navigation server, and a receiving unit for receiving the coordinate value of the current location;
Based on the divided deformed electronic map data and the coordinate value of the current location, a display control unit that synthesizes a mark indicating the current location on the deformed map and displays it on the display unit;
A navigation system comprising: The navigation system according to claim 1,
The mobile terminal further includes a transmission unit that transmits the transmission request for the electronic map data to the navigation server,
The navigation server further includes a receiving unit that receives the transmission request from the mobile terminal,
When the receiving unit receives the transmission request,
The map data identification unit refers to the map data storage unit, identifies the divided electronic map data including the current location based on the position information,
The transmitting unit transmits the specified divided electronic map data and the coordinate value of the current location in the specified divided electronic map data to the mobile terminal,
In the mobile terminal,
The receiving unit receives the divided electronic map data and the coordinate value of the current location transmitted from the navigation server,
The display control unit synthesizes a mark indicating the current location on a map based on the divided electronic map data and the coordinate value of the current location, and displays the mark on the display unit.
Navigation system. A navigation system comprising a navigation server and a mobile terminal connected to the navigation server via a network,
The navigation server
Including the coordinate values associated with the latitude and longitude, including a plurality of divided electronic map data in which the electronic map data of the map reflecting the positional relationship of the actual features is divided into a plurality of unit areas, and the coordinate value, A map data storage unit in which deformed electronic map data of a deformed map created by deforming the map is stored in association with a plurality of divided deformed electronic map data divided into the plurality of unit areas. When,
A coordinate shift amount, which is a shift amount between the coordinate value of the reference point set on the divided electronic map data and the coordinate value of the corresponding point corresponding to the reference point on the divided deformed electronic map data, A coordinate shift amount storage section for storing each area;
A location information acquisition unit that acquires location information indicating the current location of the mobile terminal;
The map data storage unit is referred to, and based on the position information, the divided electronic map data including the current location is specified from the plurality of divided electronic map data, and among the plurality of divided deformed electronic map data, A map data specifying unit for specifying the divided deformed electronic map data corresponding to the divided electronic map data including the current location;
With reference to the coordinate deviation amount storage unit, based on the coordinate value of the current location on the identified divided electronic map data and the coordinate deviation amount corresponding to the identified divided electronic map data, A current location calculation unit for calculating a coordinate value of the current location on the specified divided deformed electronic map data;
Based on the identified divided deformed electronic map data and the coordinate value of the current location calculated for the identified divided deformed electronic map data, a deformed map in which a mark indicating the current location is combined, A synthetic electronic map data generation unit for generating synthetic divided deformed electronic map data to be displayed on a display unit included in the mobile terminal;
A transmitter for transmitting the composite divided deformed electronic map data to the mobile terminal;
With
The mobile terminal
A display unit;
A position information detector for detecting the position information;
A position information transmission unit for transmitting the position information to the navigation server;
A receiver for receiving the composite divided deformed electronic map data transmitted from the navigation server;
Based on the composite divided deformed electronic map data, a display control unit that displays a deformed map in which a mark indicating the current location is combined on the display unit;
A navigation system comprising: The navigation system according to claim 3,
The mobile terminal further includes a transmission unit that transmits the transmission request for the electronic map data to the navigation server,
The navigation server further includes a receiving unit that receives the transmission request from the mobile terminal,
When the receiving unit receives the transmission request,
The map data specifying unit refers to the map data storage unit, specifies the divided electronic map data including information on the current location based on the position information,
The synthesized electronic map data generation unit generates a map in which a mark indicating the current location is synthesized based on the identified divided electronic map data and the coordinate value of the current location in the identified divided electronic map data. , Generating synthetic electronic map data to be displayed on a display unit included in the mobile terminal,
The transmitter transmits the composite electronic map data to the mobile terminal;
In the mobile terminal,
The receiving unit receives the synthetic electronic map data transmitted from the navigation server,
The display control unit displays, on the display unit, a map in which a mark indicating the current location is combined based on the combined electronic map data.
Navigation system. A navigation server,
Including the coordinate values associated with the latitude and longitude, including a plurality of divided electronic map data in which the electronic map data of the map reflecting the positional relationship of the actual features is divided into a plurality of unit areas, and the coordinate value, A map data storage unit for storing a plurality of divided deformed electronic map data obtained by deforming the deformed electronic map data of the deformed map created by deforming the map into a plurality of unit areas, respectively; ,
A coordinate shift amount, which is a shift amount between the coordinate value of the reference point set on the divided electronic map data and the coordinate value of the corresponding point corresponding to the reference point on the divided deformed electronic map data, A coordinate shift amount storage section for storing each area;
A location information acquisition unit that acquires location information indicating the current location of the mobile terminal;
The map data storage unit is referred to, and based on the position information, the divided electronic map data including the current location is specified from the plurality of divided electronic map data, and among the plurality of divided deformed electronic map data, A map data specifying unit for specifying the divided deformed electronic map data corresponding to the divided electronic map data including the current location;
With reference to the coordinate deviation amount storage unit, based on the coordinate value of the reference point on the identified divided electronic map data, and the coordinate deviation amount corresponding to the identified divided electronic map data, A current location calculation unit for calculating a coordinate value of the current location on the identified divided deformed electronic map data;
A transmitting unit that transmits the identified divided deformed electronic map data and the coordinate value of the current location calculated for the identified divided deformed electronic map data to the mobile terminal;
A navigation server comprising: A navigation server,
Including the coordinate values associated with the latitude and longitude, including a plurality of divided electronic map data in which the electronic map data of the map reflecting the positional relationship of the actual features is divided into a plurality of unit areas, and the coordinate value, A map data storage unit in which deformed electronic map data of a deformed map created by deforming the map is stored in association with a plurality of divided deformed electronic map data divided into the plurality of unit areas. When,
A coordinate shift amount, which is a shift amount between the coordinate value of the reference point set on the divided electronic map data and the coordinate value of the corresponding point corresponding to the reference point on the divided deformed electronic map data, A coordinate shift amount storage section for storing each area;
A location information acquisition unit that acquires location information indicating the current location of the mobile terminal;
The map data storage unit is referred to, and based on the position information, the divided electronic map data including the current location is specified from the plurality of divided electronic map data, and among the plurality of divided deformed electronic map data, A map data specifying unit for specifying the divided deformed electronic map data corresponding to the divided electronic map data including the current location;
With reference to the coordinate deviation amount storage unit, based on the coordinate value of the current location on the identified divided electronic map data and the coordinate deviation amount corresponding to the identified divided electronic map data, A current location calculation unit for calculating a coordinate value of the current location on the specified divided deformed electronic map data;
Based on the identified divided deformed electronic map data and the coordinate value of the current location calculated for the identified divided deformed electronic map data, a deformed map in which a mark indicating the current location is combined, A synthetic electronic map data generation unit for generating synthetic divided deformed electronic map data to be displayed on a display unit included in the mobile terminal;
A transmitter for transmitting the composite divided deformed electronic map data to the mobile terminal;
A navigation server comprising: A navigation device,
A display unit;
Including the coordinate values associated with the latitude and longitude, including a plurality of divided electronic map data in which the electronic map data of the map reflecting the positional relationship of the actual features is divided into a plurality of unit areas, and the coordinate value, A map data storage unit in which deformed electronic map data of a deformed map created by deforming the map is stored in association with a plurality of divided deformed electronic map data divided into the plurality of unit areas. When,
A coordinate shift amount, which is a shift amount between the coordinate value of the reference point set on the divided electronic map data and the coordinate value of the corresponding point corresponding to the reference point on the divided deformed electronic map data, A coordinate shift amount storage section for storing each area;
A position information detection unit for detecting position information indicating a current location of the navigation device;
The map data storage unit is referred to, and based on the position information, the divided electronic map data including the current location is specified from the plurality of divided electronic map data, and among the plurality of divided deformed electronic map data, A map data specifying unit for specifying the divided deformed electronic map data corresponding to the divided electronic map data including the current location;
With reference to the coordinate deviation amount storage unit, based on the coordinate value of the current location on the identified divided electronic map data and the coordinate deviation amount corresponding to the identified divided electronic map data, A current location calculation unit for calculating a coordinate value of the current location on the specified divided deformed electronic map data;
Based on the identified divided deformed electronic map data and the coordinate value of the current location calculated for the identified divided deformed electronic map data, a mark indicating the current location is synthesized on the deformed map, A display control unit for displaying on the display unit;
A navigation device comprising: A navigation method,
Including the coordinate values associated with the latitude and longitude, including a plurality of divided electronic map data in which the electronic map data of the map reflecting the positional relationship of the actual features is divided into a plurality of unit areas, and the coordinate value, Storing the deformed electronic map data of the deformed map created by deforming the map in the map data storage unit in a state in which the deformed electronic map data divided into the plurality of unit areas are associated with each other. When,
A coordinate shift amount, which is a shift amount between the coordinate value of the reference point set on the divided electronic map data and the coordinate value of the corresponding point corresponding to the reference point on the divided deformed electronic map data, Storing the coordinate deviation amount storage unit for each area;
Obtaining location information indicating the current location of the mobile terminal;
The map data storage unit is referred to, and based on the position information, the divided electronic map data including the current location is specified from the plurality of divided electronic map data, and among the plurality of divided deformed electronic map data, Identifying the divided deformed electronic map data corresponding to the divided electronic map data including the current location from:
With reference to the coordinate deviation amount storage unit, based on the coordinate value of the reference point on the identified divided electronic map data, and the coordinate deviation amount corresponding to the identified divided electronic map data, Calculating a coordinate value of the current location on the identified divided deformed electronic map data;
Transmitting the identified divided deformed electronic map data and the coordinate value of the current location calculated for the identified divided deformed electronic map data to the mobile terminal;
A navigation method comprising: A navigation method,
Including the coordinate values associated with the latitude and longitude, including a plurality of divided electronic map data in which the electronic map data of the map reflecting the positional relationship of the actual features is divided into a plurality of unit areas, and the coordinate value, Storing the deformed electronic map data of the deformed map created by deforming the map in the map data storage unit in a state in which the deformed electronic map data divided into the plurality of unit areas are associated with each other. When,
A coordinate shift amount, which is a shift amount between the coordinate value of the reference point set on the divided electronic map data and the coordinate value of the corresponding point corresponding to the reference point on the divided deformed electronic map data, Storing the coordinate deviation amount storage unit for each area;
Obtaining location information indicating the current location of the mobile terminal;
The map data storage unit is referred to, and based on the position information, the divided electronic map data including the current location is specified from the plurality of divided electronic map data, and among the plurality of divided deformed electronic map data, Identifying the divided deformed electronic map data corresponding to the divided electronic map data including the current location from:
With reference to the coordinate deviation amount storage unit, based on the coordinate value of the current location on the identified divided electronic map data and the coordinate deviation amount corresponding to the identified divided electronic map data, Calculating a coordinate value of the current location on the identified divided deformed electronic map data;
Based on the identified divided deformed electronic map data and the coordinate value of the current location calculated for the identified divided deformed electronic map data, a deformed map in which a mark indicating the current location is combined, Generating composite divided deformed electronic map data to be displayed on a display unit included in the mobile terminal;
Transmitting the composite divided deformed electronic map data to the mobile terminal;
A navigation method comprising: A navigation method,
Including the coordinate values associated with the latitude and longitude, including a plurality of divided electronic map data in which the electronic map data of the map reflecting the positional relationship of the actual features is divided into a plurality of unit areas, and the coordinate value, Storing the deformed electronic map data of the deformed map created by deforming the map in the map data storage unit in a state in which the deformed electronic map data divided into the plurality of unit areas are associated with each other. When,
A coordinate shift amount, which is a shift amount between the coordinate value of the reference point set on the divided electronic map data and the coordinate value of the corresponding point corresponding to the reference point on the divided deformed electronic map data, Storing the coordinate deviation amount storage unit for each area;
Detecting position information indicating the current location of the navigation device;
The map data storage unit is referred to, and based on the position information, the divided electronic map data including the current location is specified from the plurality of divided electronic map data, and among the plurality of divided deformed electronic map data, Identifying the divided deformed electronic map data corresponding to the divided electronic map data including the current location from:
With reference to the coordinate deviation amount storage unit, based on the coordinate value of the reference point on the identified divided electronic map data, and the coordinate deviation amount corresponding to the identified divided electronic map data, Calculating a coordinate value of the current location on the identified divided deformed electronic map data;
Based on the identified divided deformed electronic map data and the coordinate value of the current location calculated for the identified divided deformed electronic map data, a mark indicating the current location is synthesized on the deformed map, Displaying on the display unit provided in the navigation device;
A navigation method comprising: A computer program executed by a computer provided in the navigation server,
Including the coordinate values associated with the latitude and longitude, including a plurality of divided electronic map data in which the electronic map data of the map reflecting the positional relationship of the actual features is divided into a plurality of unit areas, and the coordinate value, A function of storing the deformed electronic map data of the deformed map created by deforming the map in the map data storage unit in a state in which the deformed electronic map data divided into the plurality of unit areas are associated with each other. When,
A coordinate shift amount, which is a shift amount between the coordinate value of the reference point set on the divided electronic map data and the coordinate value of the corresponding point corresponding to the reference point on the divided deformed electronic map data, A function for storing the coordinate deviation amount storage unit for each area;
A function to obtain location information indicating the current location of the mobile terminal;
The map data storage unit is referred to, and based on the position information, the divided electronic map data including the current location is specified from the plurality of divided electronic map data, and among the plurality of divided deformed electronic map data, A function for identifying the divided deformed electronic map data corresponding to the divided electronic map data including the current location from:
With reference to the coordinate deviation amount storage unit, based on the coordinate value of the current location on the identified divided electronic map data and the coordinate deviation amount corresponding to the identified divided electronic map data, A function of calculating the coordinate value of the current location on the identified divided deformed electronic map data;
A function of transmitting the specified divided deformed electronic map data and the coordinate value of the current location calculated for the specified divided deformed electronic map data to the mobile terminal;
A computer program for realizing a computer. A computer program executed by a computer provided in the navigation server,
Including the coordinate values associated with the latitude and longitude, including a plurality of divided electronic map data in which the electronic map data of the map reflecting the positional relationship of the actual features is divided into a plurality of unit areas, and the coordinate value, A function of storing the deformed electronic map data of the deformed map created by deforming the map in the map data storage unit in a state in which the deformed electronic map data divided into the plurality of unit areas are associated with each other. When,
A coordinate shift amount, which is a shift amount between the coordinate value of the reference point set on the divided electronic map data and the coordinate value of the corresponding point corresponding to the reference point on the divided deformed electronic map data, A function for storing the coordinate deviation amount storage unit for each area;
A function of acquiring position information indicating a current location of the mobile terminal;
The map data storage unit is referred to, and based on the position information, the divided electronic map data including the current location is specified from the plurality of divided electronic map data, and among the plurality of divided deformed electronic map data, A function for identifying the divided deformed electronic map data corresponding to the divided electronic map data including the current location from:
With reference to the coordinate deviation amount storage unit, based on the coordinate value of the current location on the identified divided electronic map data and the coordinate deviation amount corresponding to the identified divided electronic map data, A function of calculating the coordinate value of the current location on the identified divided deformed electronic map data;
Based on the identified divided deformed electronic map data and the coordinate value of the current location calculated for the identified divided deformed electronic map data, a deformed map in which a mark indicating the current location is combined, A function of generating composite divided deformed electronic map data to be displayed on a display unit included in the mobile terminal;
A function of transmitting the composite divided deformed electronic map data to the mobile terminal;
A computer program for realizing a computer. A computer program executed by a computer included in the navigation device,
Including the coordinate values associated with the latitude and longitude, including a plurality of divided electronic map data in which the electronic map data of the map reflecting the positional relationship of the actual features is divided into a plurality of unit areas, and the coordinate value, A function of storing the deformed electronic map data of the deformed map created by deforming the map in the map data storage unit in a state in which the deformed electronic map data divided into the plurality of unit areas are associated with each other. When,
A coordinate shift amount, which is a shift amount between the coordinate value of the reference point set on the divided electronic map data and the coordinate value of the corresponding point corresponding to the reference point on the divided deformed electronic map data, A function for storing the coordinate deviation amount storage unit for each area;
A function of acquiring position information indicating a current location of the navigation device;
The map data storage unit is referred to, and based on the position information, the divided electronic map data including the current location is specified from the plurality of divided electronic map data, and among the plurality of divided deformed electronic map data, A function for identifying the divided deformed electronic map data corresponding to the divided electronic map data including the current location from:
With reference to the coordinate deviation amount storage unit, based on the coordinate value of the reference point on the identified divided electronic map data, and the coordinate deviation amount corresponding to the identified divided electronic map data, A function of calculating a coordinate value of the current location on the identified divided deformed electronic map data;
Based on the identified divided deformed electronic map data and the coordinate value of the current location calculated for the identified divided deformed electronic map data, a mark indicating the current location is synthesized on the deformed map, A function of displaying on a display unit included in the navigation device;
A computer program for realizing a computer.   A recording medium in which the computer program according to claim 11 is recorded so as to be readable by a computer.

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