JP4262241B2 - Offline route display system, portable terminal device, and recognition code generation device - Google Patents

Description

  INDUSTRIAL APPLICABILITY The present invention can display and guide a map and a route offline in a communication-type navigation system or map display system using a mobile terminal device such as a mobile phone when the mobile terminal device cannot communicate with a server. The present invention relates to an offline route display system, a mobile terminal device, and a recognition code generation method, and in particular, a recognition code such as a two-dimensional code installed on a street sign board, a power pole, a fence, etc., and a destination point such as a nearby evacuation site The route up to that point is recorded, and even when communication by the mobile terminal device becomes impossible, the route from the recognition code to the destination point and the destination point can be read and displayed on the display unit of the mobile terminal device The present invention relates to a route display system, a portable terminal device, and a recognition code generation device.

  In general, navigation systems that perform route guidance by searching for a route from a desired departure point to a destination are widely used. As such a navigation system, an in-vehicle navigation system mounted on an automobile, a navigation system for a pedestrian who moves using walking and transportation, and the like are known. A system for displaying a map of the vicinity based on the current position is also known. Recently, a communication type system that uses a portable terminal device such as a mobile phone and downloads a guide route or a map from a predetermined information distribution server, a route search server, or the like is widely used as these systems.

  There is also provided a map display system that reads information recorded in a two-dimensional code printed on a magazine and downloads and displays map information including the point from an information distribution server. In the two-dimensional code, the URL (Uniform Resource Locator) of the information distribution server that distributes the location information of the installation position and the map information is recorded, and the portable terminal device uses the URL read from the two-dimensional code to store the information distribution server. To download and display map information.

  Such a map display system is disclosed in, for example, the following Patent Document 1 (Japanese Patent Laid-Open No. 2005-257738). This map display system uses a mobile phone equipped with imaging means such as a camera, reads position information recorded in a two-dimensional code installed on a road, etc., and downloads map information including the point from an information distribution server. To display.

  In a communication-type navigation system or a map display system such as that disclosed in Patent Document 1, a mobile terminal cannot display a map or guide route data unless it is communicated with an information distribution server and downloaded. For example, even if it is desired to decide whether to go to a restaurant after downloading a map of a restaurant or the like and confirming the location, communication with the information distribution server is necessary and communication costs are generated. In addition, there is a problem that map information cannot be displayed because the mobile terminal device cannot communicate with the server when it is in a place where the mobile terminal device cannot communicate or where the radio wave condition is poor.

  For this reason, when a disaster such as an earthquake occurs and communication of the mobile phone is restricted, even if it is desired to check the route to the evacuation site with the mobile phone, communication cannot be performed and the information cannot be obtained. In recent years, disasters and incidents that cause great local damage such as earthquakes and terrorism have occurred frequently all over the world, and especially in Asian countries, major disasters such as tsunamis and earthquakes are frequent. Also, as symbolized by terrorism at trade centers in the United States, terrorist damage has been reported in various countries around the world. Such a disaster is also expected to occur in Japan. In particular, earthquakes are thought to occur with a high probability if the location and timing are different.

  In order to respond to such situations, each local government and other administrative organizations establish recommended evacuation sites such as parks and schools for each region to ensure the safety of residents in the region and people working in the region. . In addition, recently, a guidebook has been provided to assist people who return home from school or work when an earthquake occurs, so-called “Earthquake Support Map for Metropolitan Area (Shobunsha)”. This guidebook provides support for evacuation routes recommended by government agencies, water, food, medical services, etc. according to the direction of return from the main location (returning home direction), and companies such as convenience stores that support people who have difficulty returning home. A map that includes points.

  As a method for obtaining route guidance to an evacuation site, there are methods that use a commonly used in-vehicle navigation system or pedestrian navigation system, and it is also possible to receive route guidance from the current position to the evacuation site. . In particular, recently, communication-type navigation services using mobile terminal devices such as mobile phones have been realized, and since mobile terminal devices such as mobile phones are usually worn and carried, the nearest location from the current location in the event of a disaster You can get route guidance to the evacuation site.

  A disaster prevention system using a portable terminal device at the time of a disaster is disclosed in, for example, Patent Document 2 (Japanese Patent Laid-Open No. 2000-57457) and Patent Document 3 (Japanese Patent Laid-Open No. 2005-17027).

  The urban disaster prevention system disclosed in Patent Document 2 includes a plurality of terminals having a function of displaying map information and a current position by a navigation system, and a disaster information center that transmits and receives signals to each of the plurality of terminals. The disaster information center receives disaster information signals sent from terminals and preset information sources, and transmits disaster information edited from the received disaster information signals to each terminal. In addition to displaying the map and positional relationship obtained from the navigation system, disaster information is displayed on this map.

  Further, in the evacuation guidance system disclosed in Patent Document 3, when the guidance host device receives a request for evacuation guidance and location information from a GPS mobile phone having a position detection means, the location information is stored in the database. Search the disaster information database and map information database to find a route with less danger to the evacuation site near the location, and configure the GPS mobile phone to notify the evacuation site along with the map information. Evacuation guidance was made promptly and safely.

  Further, a system for instructing an evacuation place at a street corner when a disaster occurs is disclosed in the following Patent Document 4 (Japanese Patent Application Laid-Open No. 11-299907). The street corner evacuation guidance system disclosed in Patent Document 4 is connected to an information command center and this information command center through a line, and receives disaster and evacuation information from the information command center and displays them on a monitor screen. It is equipped with.

Japanese Patent Laying-Open No. 2005-257738 (FIG. 3) JP 2000-57457 A (FIG. 1) Japanese Patent Laying-Open No. 2005-17027 (FIG. 1) JP-A-11-299907 (FIG. 2)

  However, the communication system, navigation system, map display system, and the like disclosed in Patent Documents 1 to 4 are configured on the assumption that the mobile terminal device and the server transmit and receive predetermined information through communication. ing. Therefore, a communication cost is incurred every time communication is performed with the server. Further, when the mobile terminal device cannot communicate or is in a poor radio wave location, it cannot communicate with the server and cannot display map information or download necessary information.

  In particular, when a mobile phone is used as a mobile terminal device, it is predicted that the communication infrastructure is severed in and around the stricken area during a disaster such as an earthquake. In addition, since many users of mobile terminal devices make calls for confirming the safety of family members, friends, and acquaintances, the communication load on the network increases. When the communication load exceeds a certain value, measures are taken to restrict communication of general users on the telecommunications carrier side in order to give priority to disaster relief and emergency communication. For example, it is often experienced that it becomes difficult to make a mobile phone after an earthquake. In such a state, even if you want to display a map of the evacuation site using a mobile terminal device, you cannot download the map information, and you will not be able to get guidance on the evacuation site or guidance on the route to the evacuation site There was a problem.

  In this way, even in the event of a disaster, even if you have a mobile phone that can be navigated, it is unlikely that you can communicate, so it is considered impossible to display and guide the travel route to the target location. For those who do not know where to evacuate in the event of a disaster, or who know the evacuation site in the neighborhood of their home but do not know the evacuation site near their work location or where they are going, go to the nearest evacuation site in the area. It is convenient if there is route information.

  There are methods of using printed materials such as the map for returning home at the time of the earthquake disaster, the evacuation site guide map at the time of disaster, and the evacuation route guide map. There is a problem that it is useless in some cases. In addition, since information on these printed materials becomes older with time, there is a problem in that it is necessary to always purchase and prepare the latest information.

  As a result of various studies to solve the above problems, the inventors of the present application have recorded a guidance map and guidance route data at a predetermined location in a recognition code such as a two-dimensional code, and the two-dimensional code is stored on a predetermined medium. If the information is recorded on the two-dimensional code using a portable terminal device having a two-dimensional code reading means such as a camera, the guidance map and the guidance route are decoded and displayed offline. Thus, the present invention has been completed with the idea that a map and a route to a predetermined location can be displayed.

  That is, according to the present invention, in a communication type navigation system or route display system using a mobile terminal device such as a mobile phone, when the communication between the mobile terminal device and the server is not possible, the map or route is guided offline. It is an object of the present invention to provide an offline route display system, a portable terminal device, and a recognition code generation device that can be used.

In order to solve the above-mentioned problem, the invention according to claim 1 of the present application is
Recognition code from the location of the identification code reading recognition code recorded offline information including the route from the map and route or the location of the identification code to the nearest shelter for the location nearest shelter against the installation site An offline route display system including a portable terminal device provided with a reading means,
The offline information includes information of the route from the map and route or the location from the location to the nearest shelter for the location nearest shelter against the installation site, the offline information text data, Alternatively, it is expressed as vector data,
The portable terminal device includes a recognition code decoding unit and a display unit, and displays the offline information read by the recognition code reading unit on the display unit.

The invention according to claim 2 of the present application is the offline route display system according to claim 1, wherein the portable terminal device includes GPS processing means for acquiring a current position, and the portable terminal device is independent of the display means. and performing route guidance from the location to a predetermined location on the basis of the off-line information displayed on.

  According to a third aspect of the present invention, in the offline route display system according to the second aspect, the portable terminal device further includes a direction detecting unit, and the direction and the recognition of the portable terminal device detected by the direction detecting unit. A route is displayed on the display means based on the azimuth information recorded in the code.

The invention according to claim 4 of the present application, in the off-line route display system according to claim 1, offline information of said path, characterized Rukoto is configured to include the intersection of latitude and longitude, the distance to the intersection And

The invention according to claim 5 of the present application is the offline route display system according to claim 1, wherein the map and the route from the place where the recognition code is installed to the nearest evacuation place to the installation place or the place where the recognition code is installed Off-line information including a route to the nearest evacuation site with respect to the installation site , the off-line information being encoded into information for recording the off-line information, which is information expressed by text data or vector data, in a recognition code And a map and route from the installation location to the nearest evacuation site for the installation location or a route from the installation location to the nearest evacuation location for the installation location encoded by the recognition code encoding means Generate recognition code from offline information Comprising a recognition code generating means that, the, destination location offline information including the route from the map and route or the location from the location to the nearest shelter for the location nearest shelter against the installation site It includes a recognition code generation device for converting the latitude, longitude and surrounding map of the vehicle to the latitude, longitude of the destination location.

The invention according to claim 6 of the present application is
Offline information including a map and a route from the installation location of the recognition code to the nearest evacuation site to the installation location or a route from the installation location of the recognition code to the nearest evacuation site to the installation location , the offline information being a text Recognition code encoding means for encoding the offline information, which is data or information represented by vector data, into information for recording in a recognition code, and the installation location encoded from the recognition code encoding means to the installation location A recognition code generating means for generating a recognition code from offline information including a map and a route to the nearest evacuation site or a route from the installation location to the nearest evacuation site to the installation location ,
From the location of the identification code of the nearest object location offline information including the route from the map and route or the location to refuge to the nearest shelter against the installation site for the site latitude and longitude and a map of Or a recognition code generation device that converts the latitude and longitude of a destination location.

The invention according to claim 7 of the present application is the recognition code generation device according to claim 6, wherein the offline information of the route includes the latitude and longitude of the intersection, and the distance to the intersection. To do.

The invention according to claim 8 of the present application is
Recognition code reading means for reading a recognition code in which offline information including a map and a route from the installation location of the recognition code to the nearest evacuation site to the installation location or a route from the installation location to the nearest evacuation site to the installation location is recorded A mobile terminal device comprising:
The offline information includes a map and a route from the installation location to the nearest evacuation site for the installation location, or information on a route from the installation location to the nearest evacuation site for the installation location, the offline information includes text data, Alternatively, it is expressed as vector data,
The portable terminal device includes a recognition code decoding unit and a display unit, and displays the offline information read by the recognition code reading unit on the display unit.

The invention according to claim 9 of the present application is the portable terminal device according to claim 8, wherein the portable terminal device includes GPS processing means for acquiring a current position, and the portable terminal device is independently provided in the display means. and performing route guidance from the location based on the display above the offline information to the nearest shelter against the installation site.

The invention according to claim 10 of the present application is the portable terminal device according to claim 9 , wherein the portable terminal device further includes an orientation detection unit, and the orientation of the mobile terminal device detected by the orientation detection unit and the recognition code. The route is displayed on the display means based on the azimuth information recorded in.

According to an eleventh aspect of the present invention, in the mobile terminal device according to the eighth aspect , the offline information of the route is information including the latitude and longitude of the intersection and the distance to the intersection. Features.

In the invention according to claim 1, the portable terminal device, the location of the identification code from the map and route or the location of the identification code to the nearest shelter for the location nearest shelter against the installation site A recognition code reading means for reading a recognition code recording offline information including a route, a recognition code decoding means and a display means, and the offline information includes a map from the installation location to the nearest evacuation location to the installation location, and Including information on the route or the route from the installation location to the nearest evacuation site to the installation location , the offline information is expressed by text data or vector data, and the route information read by the recognition code reading means is displayed. Display on means.
Therefore, map and route information is recorded in the recognition code and installed at a predetermined location, the recognition code is read by the mobile terminal device, and the map and route from the installation location to the nearest evacuation site is displayed. As a result, the travel route to the nearest evacuation site that is the destination can be provided as offline information. In particular, the map from the location recognition code to neighboring shelter, since the path is reported, that even if a disaster portable terminal device can not communicate with the route search server displays the evacuation route offline become able to.

According to a second aspect of the present invention, in the offline route display system according to the first aspect, the mobile terminal device includes GPS processing means for acquiring a current position, and the mobile terminal device displays the display means independently on the display means. performing route guidance to the nearest shelter against the installation site from the installation location based on the off-line information.
Therefore, the information on the current position acquired by the GPS processing unit is added to the map and route displayed on the display unit, and the route guidance to the evacuation site can be performed offline.

According to a third aspect of the present invention, in the offline route display system according to the second aspect, the mobile terminal device further includes a direction detecting unit, and the direction of the mobile terminal device detected by the direction detecting unit and the recognition code are included. Based on the recorded azimuth information, a route is displayed on the display means.
Accordingly, the map and the route can be displayed on the display unit in accordance with the orientation of the mobile terminal device detected by the azimuth detecting unit, and the display can be easily understood by the user.

In the invention according to claim 4, in the offline route display system according to claim 1, the offline information of the route is information including the latitude and longitude of the intersection and the distance to the intersection.
Therefore, since the route information includes the latitude and longitude of the intersection and the distance to the intersection, the intersection in the route from the installation location of the recognition code to the evacuation site, the distance to the intersection, and the required time can be guided. become able to.

In the invention according to claim 5, the offline route display system according to claim 1 is a map from the installation location of the recognition code to the nearest evacuation site to the installation location and the route or the installation location of the recognition code to the installation location. a offline information including a route to the nearest shelter, recognition code encoding the offline information for encoding text data or, on the information for recording the offline information is expressed by vector data in recognition code And off-line information including the map and route from the installation location encoded by the recognition code encoding unit to the nearest evacuation site for the installation location or the route from the installation location to the nearest evacuation location for the installation location Recognition code that generates code Comprising a forming unit, a from the location of the path object location from the map and route or the location of the nearest shelter for the location nearest shelter against the installation site latitude, longitude and surrounding It includes a recognition code generation device that converts the latitude or longitude of the map or the destination location.
Therefore, a map and a route from a place where the recognition code is installed to a predetermined place can be recorded in the recognition code. This enables the mobile terminal device to read the recognition code and display a map and route from the installation location to the nearest evacuation site to the installation location , providing offline information on the travel route to the nearest evacuation site as the destination Will be able to. In particular, the map from the location recognition code to neighboring shelter, since the path is reported, that even if a disaster portable terminal device can not communicate with the route search server displays the evacuation route offline become able to.

  In the invention according to claim 6, it is possible to provide a recognition code generation device constituting the offline route display system according to claim 5.

In the invention according to claim 7, in the recognition code generation device according to claim 6, the offline information of the route includes the latitude and longitude of the intersection and the distance to the intersection. Therefore, it is possible to guide the intersection, the distance to the intersection, and the required time in the route from the installation location of the recognition code to the nearest evacuation site for the installation location .

The invention according to claim 8 to claim 11, it is possible to provide a portable terminal device constituting such offline route display system respectively claims 1 to 4.

  Hereinafter, specific examples of the present invention will be described in detail with reference to examples and drawings. However, the embodiment shown below exemplifies an offline route display system for embodying the technical idea of the present invention, and is not intended to specify the present invention as this offline route display system. The present invention is equally applicable to the offline route display guidance system of other embodiments included in the scope of claims.

  An offline route display system 10 according to a first embodiment of the present invention includes a mobile terminal device 20 including a mobile phone connected via a network 12 such as the Internet and a route search server 40 as shown in FIG. Has been. The route search server 40 is not necessarily required for the offline route display processing, but is used when the mobile terminal device 20 normally receives a navigation service online.

  In the present invention, in order for the mobile terminal device 20 to display a map or a route offline, a recognition code 50 such as a QR code (Quick Response Code: registered trademark) in which the map / route information is recorded is installed at an arbitrary place. The mobile terminal device 20 is configured to obtain and display map / route information from the recognition code 50.

If the mobile terminal device 20 such as a mobile phone can display the map information and the route information offline without performing communication with the route search server 40, the following advantages can be obtained.
1) Communication cost can be reduced.
2) Paper media can be used (by using a recognition code)
3) Anyone can confirm this information (can be used as an advertisement)
4) Reading error can be reduced (by using a recognition code)

  In particular, as described above, even in the event of a disaster, even if you have a mobile phone that can be navigated, it is unlikely that communication is possible, so it is considered impossible to display and guide the travel route to the target location. In addition, many people do not know where to evacuate in the event of a disaster, or know the evacuation site in the neighborhood of their homes but do not know the evacuation site near their work place or destination. If there is the recognition code 50 in which the evacuation route to the nearest evacuation site is recorded in the affected place, the evacuation route can be confirmed without communication with the route search server 40.

  As described above, the route information to the nearest shelter in the area is recorded and installed in the recognition code 50, so that the mobile terminal device 20 acquires the map / route information from the recognition code 50 and displays it offline. And will be able to clarify the appropriate initial actions to be taken in the event of a disaster. It is also anticipated that the target building will collapse in the event of a disaster, and rather than spending a large amount of data to describe information such as landmarks on the map recorded in the recognition code 50, the evacuation route to the evacuation site etc. It is more useful to spend the amount of data on clear display. The evacuation route is preferably provided by giving priority to safe roads (relatively large roads such as national roads and prefectural roads) as a guide.

  Therefore, when the evacuation route information is provided by the recognition code 50, the map information is displayed briefly, and the evacuation route display / guide is focused on. If you are affected by a disaster, at least know the direction and route to the evacuation site. In other words, it is important to move to an evacuation site and ensure safety as a first action when a disaster occurs. Therefore, by providing a safe route (evacuation route) as much as possible to move to the evacuation site as offline information using a recognition code for each region in advance, it is possible to reduce local residents' anxiety and Can be secured and a sense of security can be given. In addition, by presenting as safe an evacuation route as possible, it is possible to contribute to reducing the number of victims caused by secondary disasters.

  The route search server 40 includes route search means, road network data for route search, evacuation route data, and the like, in the same manner as a general navigation server. Evacuation route data provides assistance for those who have difficulty returning home, such as evacuation routes recommended by government agencies, places where water, food, medical services, etc. can be obtained, and companies such as convenience stores, depending on the direction of return from the main area (returning home direction). This is a route that includes support points.

  This evacuation route data is data composed of nodes, links, and the like in the same way as road network data used for normal route search, and mainly a main road is set. The route from the specific work place to the evacuation route and the route from the evacuation route to the specific home are searched with reference to the road network data.

  When the user of the mobile terminal device 20 receives the navigation service online, the route search server 40 sets a route search condition such as a departure point and a destination and transmits a route search request to the route search server 40. Based on the search conditions, the road network data is referred to search for the optimum route from the departure point to the destination, and the guidance route and map data are distributed to the mobile terminal device 20.

  The road network data has roads (routes) on the map as nodes and node positions as inflection points, links connecting each node as links, and cost information (distance and required time) for all links as a database. ing. Then, the route search server 40 refers to the road network data and sequentially searches for a link from the departure node to the destination node, and follows the node and the link with the smallest cost information of the link to guide the route. By doing so, the shortest route can be guided to the mobile terminal device 20. As such a route search method, a method called label determination method or Dijkstra method is used. Such a configuration is the same as that of a general navigation system.

  On the other hand, the mobile terminal device 20 includes a main control unit 21, a communication unit 22, a GPS processing unit 23, a route guidance request unit 24, a recognition code reading unit 25, a recognition code decoding unit 26, a temporary storage unit 27, and an operation / input unit 28. , Display means 29, audio output means 30, azimuth detection means 31, and the like. The main control unit 21 includes a microprocessor (CPU) having a RAM and a ROM (not shown), and controls the operation of each unit by a control program stored in the ROM.

  The operation / input means 28 is for operation / input consisting of numeric keys, alphabet keys, other function keys, selection keys, scroll keys, and the like. From the menu screen displayed on the display means 29 as output means. Various input operations are performed by selecting a desired menu or operating keys. Accordingly, the display unit 29 also functions as a part of the operation / input unit 28. The communication means 22 is an interface for communicating with the route search server 40 via the network 12.

  The GPS processing means 23 receives a GPS satellite signal by a GPS receiver, and measures the current position (latitude / longitude) of the mobile terminal device 20. When a user wants to request a route search from the route search server 40, the operation / input means 28 is operated to display a service menu screen or a predetermined input screen on the display means 29, and the departure place, destination, movement The route search conditions such as means (walking or car), scheduled departure time and desired arrival time are input. When the current location is selected as the departure location, the current location measured by the GPS processing means 22 is used as the departure location.

  The route guidance request unit 24 edits the input route search condition into data to be transmitted to the route search server 40 and transmits the data to the route search server 40 via the communication unit 22. Distribution data such as a guidance route, a map, and guidance data distributed from the route search server 40 is temporarily stored in the temporary storage unit 27. These distribution data are read from the temporary storage means 27 as necessary and displayed on the display means 29. At the time of display, the current position measured by the GPS processing means 23 is superimposed on the map and displayed as a current position mark along with a guide route.

  When the user travels along the guidance route and approaches the node for which the guidance point is set, guidance data added to the guidance route data is output from the voice output means 30 and guidance for turning left and right is performed. The above is the operation for displaying the guide route distributed from the route search server 40 online.

  Next, an operation when the mobile terminal device 20 displays a route offline will be described. When displaying an offline route, a recognition code 50 such as a QR code (registered trademark) is set at an arbitrary point. In this recognition code 50, data of a map and a route from an installation point to a predetermined point are encoded and recorded. This recognition code is fixedly installed on the bulletin board, telephone pole, fence, sidewalk surface, etc. of the installation point. For the purpose of displaying the evacuation route at the time of disaster such as an earthquake offline, the evacuation route from the recognition code installation point to the evacuation site in the vicinity thereof is recorded in the recognition code 50. It is preferable that the installation location is sturdy and does not move even if a disaster occurs.

  The portable terminal device 20 includes a recognition code reading unit 25 including an imaging unit such as a CDD camera. In the offline route display, the recognition code reading unit 25 reads a recognition code 50 installed in the vicinity. The read result is decoded by the recognition code decoding means 26. Since the information recorded in the recognition code 50 is information on a map and a route from the installation location of the recognition code 50 to a predetermined point, the result decoded by the recognition code decoding means 26 is displayed on the display means 29. The installation location of the recognition code 50, that is, the route from the current position of the mobile terminal device 20 to a predetermined point can be displayed off-line.

  In this way, the route to the evacuation site is read from the recognition code 50 attached to the utility pole or the steel tower in the event of a disaster. Even if a utility pole or steel tower collapses at the time of a disaster, it is sufficient that even the recognition code QR code can be read. Since the GPS processing means 23 is provided in the mobile terminal device 20, it is possible to guide the current position, route, etc., and if the orientation detection means 31 such as a geomagnetic sensor is provided, the direction of the mobile terminal device 20 Can be determined.

  FIG. 2 is a diagram showing an example of the recognition code 50, and FIG. 3 is a diagram showing route information recorded in the recognition code 50 of FIG. That is, FIG. 3 is a diagram showing a part of the map in front of the station expressed by text data (ASCII art). The text data encoded and recorded in the recognition code 50 is shown in FIG. If text data indicating a route to a predetermined point is added to the map data of FIG. 3 and encoded and stored in the recognition code 50, the route to the predetermined point can be recorded together with the map.

  When the map and route are displayed off-line on the portable terminal device 20, the recognition code reading unit 25 reads the recognition code 50 shown in FIG. 2 and the recognition code decoding unit 26 decodes it. Thereby, the map and route data expressed by the text data of FIG. 3 are reproduced and can be displayed offline on the display means 29. FIG. 2 shows a recognition code 50 in which the text data shown in FIG. 3 is actually encoded and recorded in a QR code (registered trademark).

For example, when a QR code (registered trademark) is used as the recognition code 50, the number of characters that can be recorded is
For numbers only: up to 7089 characters,
Characters / alphanumerics ... Up to 4296 characters
Binary (8 bits) ... Up to 2953 bytes Kanji and double-byte kana characters ... Up to 1817 characters.

  Since the simple map of FIG. 3 is drawn in a text format (ASCII art), the amount of calculation for the map display in the mobile terminal device 20 can be reduced, and the power consumption of the mobile terminal device 20 can be suppressed. Further, when the map range is large, or when it is desired to perform enlargement / reduction / change of orientation on the display screen, a vector map expressed by vector data may be used.

  FIG. 4 is a diagram illustrating a display example of a map and a route displayed on the display unit 29. In FIG. 4, a display screen 411 displays from the departure point ST (current location: installation location of the recognition code 50) to the destination G (predetermined location: in this case a nearby evacuation site) based on the data read from the recognition code 50 and decoded. A map and route R to (a school) are displayed. The user operates the zoom-in button 414 displayed on the screen when he wants to enlarge the map or the route R, and operates the zoom-out button 413 when he wants to reduce the display. To return to the menu screen, the menu button 412 is operated. In addition, if the azimuth detecting means 31 configured by a geomagnetic sensor or the like detects the azimuth to which the mobile terminal device 20 is directed and displays a map or route according to the current orientation, a more easily understandable map display can be performed. For this purpose, azimuth information may be added to the map or route information recorded in the recognition code 50.

The format of the data indicating the route is defined in a form in which the starting point, the waypoint (may pass through a plurality of points), and the latitude and longitude of each point of the destination are arranged. For example, route data created in this format is as follows.
Route 1 Point 1 (Departure point)
O35.40.24.05,139.46.23.89
In this data, O indicates the departure place, 35.40.24.05 indicates the latitude, and 139.46.23.89 indicates the longitude.
Route 1 point 2 (via point)
V35.00.43.67,139.52.15.32
In this data, V represents a waypoint, 35.00.43.67 represents latitude, and 139.5.15.32 represents longitude.
Route 1 point 3 (Destination)
D36.22.35.78,140.28.50.12
In this data, D indicates the destination, 36.22.35.78 indicates the latitude, and 140.28.50.12 indicates the longitude.

The route data format is not limited to this example. By adding distance information between points, the distance to the destination and the required time can be guided. In addition, points that output guide information such as “10 m ahead in the right direction” and “30 m ahead in the diagonal direction left”, for example,
You may add as codes, such as "G35.03.44.47,139.52.16.36R10", "G35.03.18.87,139.51.46.81LS30".
These map information data and route information data may be provided as separate recognition codes 50, read separately, combined with the mobile terminal device 20 and displayed, or recorded in the same recognition code 50 and provided. However, it may be read at once and displayed on the portable terminal device 20.

  FIG. 5 is a diagram showing a specific example of route data created in the above format. In FIG. 5, a route 1 is data for one route from the departure point to the destination shown above. By setting a plurality of lines of this route data as shown in FIG. 5, a route to a plurality of locations or a plurality of routes to the same location can be displayed. FIG. 6 shows a recognition code 50 actually recorded by encoding the route data shown in FIG. 5 into a QR code (registered trademark).

  The amount of data of the path data shown in FIG. 5 can be reduced by a lossless compression process with a two-stage configuration of modeling and encoding. For such lossless compression processing, for example, the technique disclosed in Tomohiko Uematsu: Introduction to Document Data Compression Algorithm (CQ Publishing Co., Ltd., published in 1994) can be applied.

  FIG. 7 is a flowchart showing an operation procedure when the mobile terminal device 20 performs offline route display. When a user intends to display a map or route offline on the mobile terminal device 20, first, the recognition code reading means 25 reads the recognition code 50 shown in FIG. 2 or FIG. 6 in the process of step S11. Next, in the process of step S12, the recognition code decoding means 26 decodes the read data of the recognition code 50. Next, the map and route decoded in the process of step S13 are displayed on the display means 29.

  The mobile terminal device 20 described above has a function of reading the recognition code 50 and reproducing a map and a route. However, the mobile terminal device 20 further encodes and records the map and route data in the recognition code 50. By providing the function for this, a recognition code can be created.

  FIG. 8 is a block diagram illustrating a configuration of the mobile terminal device 20 having the recognition code creation function according to the second embodiment of the present invention. The portable terminal device 20 is basically the same as the portable terminal device 20 in the first embodiment except that it includes a recognition code encoding unit 32 and a recognition code generation unit 33. In FIG. 8, the same reference numerals are assigned to the same components as those of the mobile terminal device 20 of the first embodiment in order to avoid duplication of explanation.

  The procedure for creating the recognition code by the portable terminal device 20 is shown in the flowchart of FIG. When outputting a desired map or route to the recognition code 50, the mobile terminal device 20 sets a starting point and a destination and acquires a map or route search result from the route search server 40. Then, the map and route data are generated in the process of step S21. The format of this data may be the same format as described in the first embodiment, for example.

  Next, in the processing of step S22, the recognition code encoding means 32 performs data format conversion and compression processing according to the recording method of the recognition code 50, and encodes the data. In step S23, the recognition code generation means 33 converts the data into a recognition code and outputs the recognition code 50. The generated recognition code may be printed directly on a medium such as paper by the recognition code generation means 33, or may be output to a storage medium such as a flash memory and printed separately by a printing means.

  When using the recognition code 50 for evacuation route guidance, the position (latitude / longitude) of the place where the recognition code 50 is installed as the departure point is designated, and the position of the designated evacuation place near the installation place is designated as the destination. To obtain route information. When the recognition code 50 is used for store guidance or the like, information may be acquired by designating the position of the place where the recognition code 50 is installed as a departure place and the position of the store as a destination.

  In the first and second embodiments, the recognition code 50 is an example in which a two-dimensional code such as a QR code (registered trademark) is used. However, other recognition codes other than the two-dimensional code, for example, recognition such as an IC tag. It is also possible to use a code. By using a non-contact type information reading technique such as an IC tag, more data can be recorded and read. In addition, since the IC tag can rewrite recorded data, it is easy to rewrite and maintain the IC tag installation location, the map and route data recorded on the IC tag. Furthermore, the IC tag is resistant to dirt and is suitable for use as a recognition code installed outdoors. When an IC tag is used as the recognition code, the mobile terminal device 20 is configured to use an IC tag reading device as the recognition code reading means so as to read the map and route data recorded on the IC tag by short-range wireless communication. Good.

  As described above, according to the present invention, the map or route information is recorded in the recognition code and installed at a predetermined location, and the mobile terminal device can read the recognition code and display the map or route. The travel route to the ground can be provided as offline information, and in particular as an emergency measure, an evacuation route to the evacuation site can be provided for each region.

  In addition, since the travel route is converted into a recognition code such as QR code (Quick Response Code: registered trademark) and provided on paper media, the route (several routes to the evacuation site in the vicinity of the target location, especially as a disaster prevention measure) It is possible to provide multiple routes to a place) for offline use. If this identification code is affixed to a sturdy object such as a utility pole or iron pole in each area that does not move even if a disaster occurs, the identification code is read even if the building or utility pole collapses, etc. The route to reach can be displayed offline.

  Further, the latitude / longitude of the destination place, the route / guide information (the latitude / longitude of the intersection, the distance to the intersection, etc.) and the like are embedded as offline information. In particular, when route guidance is provided as a disaster prevention measure, it is possible to provide and guide route information giving priority to roads along national and prefectural roads where earthquake and fire prevention measures have been taken as much as possible, or roads that are unlikely to collapse buildings. Become.

  According to the present invention, navigation that does not require communication can be performed, so that it is possible to provide maps and route information in a form that is visible to the human eye, for example, a paper medium, and that information is stored in the mobile terminal device. By storing the information, it is possible to display and guide the route offline without carrying a paper medium, and it can be used for advertisement for attracting customers to the store.

  In addition, the travel route to the evacuation site can be provided as offline information for each region, especially in the event of a disaster, which can contribute to disaster prevention effects and the safety and security of local residents.

It is a block diagram which shows the structure of the offline path | route display system and portable terminal device concerning Example 1 of this invention. It is a figure which shows an example of the recognition code which recorded the map expressed by the text data format, and the path | route. It is a figure which shows the example which decoded the map and path | route recorded on the recognition code of FIG. It is a figure which shows the example of a display of the map displayed on a display means, and a path | route. It is a figure which shows the specific example of the path | route data recorded on a recognition code. It is a figure which shows the recognition code which encoded the path | route data shown in FIG. 5, and was actually recorded. It is a flowchart which shows the operation | movement procedure in case a portable terminal device performs an offline path | route display. It is a block diagram which shows the structure of the portable terminal device which has the recognition code preparation function concerning Example 2 of this invention. 12 is a flowchart illustrating an operation procedure for creating a recognition code by the mobile terminal device according to the second embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 .... Offline route display system 12 ... Network 20 ... Mobile terminal device 21 ... Main control unit 22 ... Communication means 23 ... GPS processing means 24 ... · Route guidance request means 25 ··· Recognition code reading means 26 ··· Recognition code decoding means 27 ··· Temporary storage means 28 ··· Operation and input means 29 ··· Display means 30 ··· ..Voice output means 31 ... Direction detection means 32 ... Recognition code encoding means 33 ... Recognition code generation means 50 ... Recognition code

Claims (11)

Recognition code from the location of the identification code reading recognition code recorded offline information including the route from the map and route or the location of the identification code to the nearest shelter for the location nearest shelter against the installation site An offline route display system including a portable terminal device provided with a reading means,
The offline information includes information of the route from the map and route or the location from the location to the nearest shelter for the location nearest shelter against the installation site, the offline information text data, Alternatively, it is expressed as vector data,
The mobile terminal device includes a recognition code decoding unit and a display unit, and displays the offline information read by the recognition code reading unit on the display unit. The mobile terminal device includes a GPS processing means for obtaining the current position, to perform the route guidance from the location based on the off-line information displayed on said display means the portable terminal device independently to a predetermined place The offline route display system according to claim 1.   The mobile terminal device further includes an orientation detection unit, and displays a route on the display unit based on the orientation of the mobile terminal device detected by the orientation detection unit and the orientation information recorded in the recognition code. The offline route display system according to claim 2.   2. The offline route display system according to claim 1, wherein the offline information of the route includes a latitude and longitude of an intersection and a distance to the intersection. Offline information including a map and a route from the installation location of the recognition code to the nearest evacuation site to the installation location or a route from the installation location of the recognition code to the nearest evacuation site to the installation location , the offline information being a text Recognition code encoding means for encoding the offline information, which is data or information represented by vector data, into information for recording in a recognition code, and the installation location encoded from the recognition code encoding means to the installation location Recognition code generating means for generating a recognition code from offline information including a map and a route to the nearest evacuation site or a route from the installation location to the nearest evacuation site to the installation location, and the installation from the installation location the nearest shelter to the location Map and route or the location from the desired location offline information including a route to the nearest shelter against the installation site latitude, longitude and surrounding map, or latitude destination location, identification code generating device for converting the longitude The offline route display system according to claim 1, further comprising: Offline information including a map and a route from the installation location of the recognition code to the nearest evacuation site to the installation location or a route from the installation location to the nearest evacuation site to the installation location , the offline information being text data, Alternatively, a recognition code encoding means for encoding the offline information, which is information represented by vector data, into information for recording in a recognition code, and a location nearest to the installation location from the installation location encoded by the recognition code encoding means A recognition code generating means for generating a recognition code from offline information including a map and route to an evacuation site or a route from the installation location to the nearest evacuation site to the installation location ,
Map and route from the installation location of the recognition code to the nearest evacuation site for the installation location or offline information including the route from the installation location to the nearest evacuation location for the installation location, latitude, longitude and surrounding map of the destination location Or a recognition code generation device that converts the latitude and longitude of a destination location.   The recognition code generation apparatus according to claim 6, wherein the offline information of the route includes a latitude and longitude of an intersection and a distance to the intersection. Recognition code reading means for reading a recognition code in which offline information including a map and a route from the installation location of the recognition code to the nearest evacuation site to the installation location or a route from the installation location to the nearest evacuation site to the installation location is recorded A mobile terminal device comprising:
The offline information includes a map and a route from the installation location to the nearest evacuation site for the installation location, or information on a route from the installation location to the nearest evacuation site for the installation location, the offline information includes text data, Alternatively, it is expressed as vector data,
The portable terminal device includes a recognition code decoding unit and a display unit, and displays the offline information read by the recognition code reading unit on the display unit. The mobile terminal device includes a GPS processing means for acquiring the current position, from the location based on the off-line information displayed on said display means the portable terminal device independently nearest shelter against the installation site The mobile terminal device according to claim 8, wherein route guidance is performed.   The mobile terminal device further includes an orientation detection unit, and displays a route on the display unit based on the orientation of the mobile terminal device detected by the orientation detection unit and the orientation information recorded in the recognition code. The mobile terminal device according to claim 9.   The mobile terminal device according to claim 8, wherein the offline information of the route is information including a latitude and longitude of an intersection and a distance to the intersection.

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