JP2009104164A - Location method of two-dimensional code recording medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a portable digital assistant and a map display system for displaying a map, which can display a map in a direction easy for a user to see when displaying, on the basis of the information recorded on a two-dimensional code, map information including the place where the two-dimensional code is located. <P>SOLUTION: A portable digital assistant 10 comprises: a two-dimensional code reading means 14 reading a two-dimensional code which is located at a specific point and on which positional information of its located point and azimuth information of the point with respect to the reading reference direction of the two-dimensional code have been recorded; a display means 18 displaying a map; a rotation angle calculating means 121; and a map rotating means 122. The two-dimensional code reading means outputs the positional information recorded on the two-dimensional code, the reading reference direction of the two-dimensional code, and azimuth information. The rotation angle calculating means calculates the rotation angle based on the reading reference direction of the two-dimensional code and the azimuth information. The display means displays the map which includes the location position of the two-dimensional code and which is rotated based on the rotation angle. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention is used for a mobile terminal such as a mobile phone having a function of reading a two-dimensional code and displaying a map including a specific location based on information obtained from the two-dimensional code, a map display system, and a server. In particular, when displaying a map including a place where the two-dimensional code is installed based on information recorded in the two-dimensional code, the map is displayed in a direction that is easy for the user to see. The present invention relates to a two-dimensional code recording body used for a portable terminal having a map display function, a map display system, and an information distribution server.

  With the development of information and communication technology in recent years and the enhancement of infrastructure, the spread of mobile terminals centering on mobile phones is remarkable, and users can enjoy various services using mobile terminals free of charge. It is coming. In particular, a mobile terminal represented by a mobile phone has a built-in camera, and there are various usage forms such as sending an image captured by the mobile terminal by e-mail or accessing desired information from the captured image via the Internet. It is being realized.

  A two-dimensional code is printed on magazines, newspapers, insert advertisements, bulletin advertisements, etc., and advertiser information such as a URL (Uniform Resource Locator) of the homepage established by the advertiser, two-dimensional In addition to information such as code acquisition location, destination location, map and URL of the navigation server, record various information such as store name, store profile, phone number, location, business hours, holidays, etc. By reading the two-dimensional code with the built-in camera and accessing the home page using the read information, it is possible to obtain a map of the advertiser's store and receive navigation.

  Such a system is disclosed in, for example, Japanese Patent Application Laid-Open No. 2002-48586. That is, the navigation method disclosed in Patent Document 1 provides navigation information to a destination without inputting the current location based on optical data read instantaneously with one touch. This method includes a first stage in which a service user reads optical data (two-dimensional code) displayed on an advertising medium using a reader mounted on a portable information device, and optical data using the portable information device. And a second step of converting the character data into character data including at least information on the code acquisition position and the destination position, and a third step of transferring the character data to the navigation server using the portable information device via the communication network. And a fourth stage in which the navigation server transmits the guidance route from the code acquisition position to the destination position to the portable information device via the communication network.

  In addition, a symbol pattern (two-dimensional code) is set on a bulletin board or telephone pole installed at a specific place (by a method such as pasting), and this is read by a reading means such as a camera mounted on a portable terminal. A system for acquiring map information based on information recorded in a dimension code has also been proposed. For example, a system disclosed in the following Patent Document 2 (Japanese Patent Laid-Open No. 2003-319033) takes a picture of a symbol pattern displayed on a bulletin board by a digital camera provided in a mobile phone. The captured still image is transmitted to the video processing server, the symbol pattern is recognized from the still image, and converted into corresponding data. Further, based on the converted data, the video processing server transfers information held in the information server to the mobile phone. Thereby, in the mobile phone, the symbol pattern of the bulletin board is displayed on the screen, and by clicking on it, it is possible to link to more detailed information of the information displayed on the bulletin board.

  That is, in the system disclosed in Patent Document 2, the URL of a server that provides map information is recorded in a symbol pattern, and is read by a camera of a mobile phone and linked to the URL. The information can be downloaded from. By assigning position information to each bulletin board or telephone pole where the symbol pattern is installed, the map information distribution server can know the position where the mobile phone read the symbol pattern, and the position where the mobile phone read the symbol pattern ( Map information including location) can be distributed to mobile phones.

  There are various types of two-dimensional codes, and these are described in Patent Document 3 (Japanese Patent Laid-Open No. 2000-222517), Patent Document 4 (Japanese Patent Laid-Open No. 2000-337853), and Patent Document 5 (Special Japanese Patent Application Laid-Open No. 2000-337853). (Kaihei 9-50481) and the like.

JP 2002-48586 A JP 2003-319033 A JP 2000-222517 A JP 2000-337853 A Japanese Patent Laid-Open No. 9-50481

  By the way, when a two-dimensional code is read by a portable terminal and map information is acquired based on information recorded in the two-dimensional code and displayed on the display unit of the portable terminal, the portable terminal is read at the place where the two-dimensional code is read. It is not clear how the map will be displayed. In general, maps are created with north facing up, and when displayed, north is facing up. This is called North Up. When the user of the portable terminal faces the north at the place where the two-dimensional code is read, the user can read the map without a sense of incongruity even if the display is normally performed with the north facing up.

  However, if the map displayed on the mobile device is north-up, if the user is facing south, if the mobile device is turned upside down and the map is viewed, the map will be in the direction you are facing It can be read, but if the mobile terminal is not turned upside down, the user will work to read the map upside down in his head. It is a common practice to turn the map so that the direction you are facing and the map are read when the direction you are facing does not match the top and bottom of the map.

  In the portable information device and the map information distribution system disclosed in Patent Document 1 or Patent Document 2, the orientation in which the distributed map is displayed on the display unit of the mobile terminal is not considered at all. This is not good for the user. Although it is possible to detect the direction by installing a geomagnetic sensor on a mobile terminal and rotate the map accordingly, there are many places where the geomagnetism is greatly disturbed in the subway, underground mall, and inside the building, and the map There is a problem that the direction cannot always be rotated in a preferable direction with respect to the user's direction, and an increase in cost due to mounting of a geomagnetic sensor on the mobile terminal cannot be ignored.

  The inventor of the present application has conducted various studies in order to solve the above-described problems.As a result, the orientation of the code reading reference can be detected according to the two-dimensional code. That is, if the position information of the point where the two-dimensional code is installed and the orientation information with respect to the reading reference direction of the two-dimensional code can be acquired when the two-dimensional code is read, the map is identified from the position information, and the reading reference The present invention has been completed by paying attention to the fact that the rotation angle for rotating and displaying the map on the display unit can be calculated from the direction information and the direction information for the shake.

  That is, the present invention has an object to solve the above-mentioned problems. When displaying map information including a place where the two-dimensional code is installed based on information recorded in the two-dimensional code, a user can It is an object of the present invention to provide a portable terminal for displaying a map, a map display system, an information distribution server, and a program that can display a map in an easy-to-view direction. In the present invention, the map to be displayed is a road map in a narrow sense, but the map is not limited to this, and a map in a broad sense also includes a guide map in an event venue and a guide map inside a station, a museum, a hospital, etc. As included in the map of the present invention.

The invention according to claim 1 of the present application includes two-dimensional code reading means for reading a two-dimensional code, display means for displaying a map, and rotation angle calculating means, and map information based on information read from the two-dimensional code. Is a two-dimensional code that is read by a mobile terminal that calculates a rotation angle by specifying
The two-dimensional code recording body is characterized by recording position information of a point where the two-dimensional code is installed and azimuth information of the point with respect to a reading reference direction of the two-dimensional code.

The invention according to claim 2 of the present application is an information distribution server that distributes map information to a mobile terminal based on information transmitted from the mobile terminal;
It is composed of a two-dimensional code reading means for reading a two-dimensional code installed at a specific point, and a portable terminal provided with a display means for displaying a map,
The mobile terminal or the information distribution server includes a rotation angle calculation means and / or a map rotation means,
Based on the information recorded in the two-dimensional code, the position information of the point where the two-dimensional code is installed and the azimuth information of the point with respect to the reading reference direction of the two-dimensional code are obtained, and the position information A map display system that determines map information based on the information, calculates a rotation angle from the orientation information of the point with respect to the reading reference direction of the two-dimensional code, rotates the map based on the rotation angle, and displays the map on display means A two-dimensional code used,
The two-dimensional code is a two-dimensional code recording body in which ID information for identifying the two-dimensional code is recorded.

  The invention according to claim 3 of the present application is characterized in that, in the two-dimensional code recording body according to claim 2, position information of a point where the two-dimensional code is installed is further recorded in the two-dimensional code. .

  The invention according to claim 4 of the present application is characterized in that, in the two-dimensional code according to claim 2 or 3, azimuth information of the point with respect to the orientation of the reading reference of the two-dimensional code is recorded in the two-dimensional code. .

  The invention according to claim 1 comprises a two-dimensional code reading means for reading a two-dimensional code, a display means for displaying a map, and a rotation angle calculating means, and map information is obtained based on information read from the two-dimensional code. The rotation angle is specified, and the two-dimensional code read by the portable terminal that rotates and displays the map on the display means is added to the position information of the point where the two-dimensional code is installed and the reading reference of the two-dimensional code Since the azimuth information of the point with respect to the direction is recorded, the map of the point can be displayed in an easy-to-view direction for the user.

  In the inventions according to claims 2 to 4, ID information for identifying the two-dimensional code is recorded in the two-dimensional code, and each two-dimensional code is installed in the information distribution server in correspondence with the ID information of the two-dimensional code. The position information of the point and / or the azimuth information with respect to the orientation of the reading reference at the point is stored, and the portable terminal reads the position information and ID information recorded in the two-dimensional code, and from the information distribution server based on the ID information Receiving azimuth information for the orientation of the reading reference at the two-dimensional code installation point, the rotation angle calculation means of the mobile terminal or the information distribution server calculates the rotation angle to rotate the map, and distributes the map information from the information distribution server The map is rotated or the map information distributed from the information distribution server is received and displayed on the mobile terminal. To display a map of the point it in easy-to-read orientation so that it is.

  In addition, since it is only necessary to record an ID code for identification in the two-dimensional code, the two-dimensional code recording body is formed in a sheet shape and pasted or peeled off and installed at different points for reuse. This is useful when a two-dimensional code is installed at a temporary event venue to deliver guidance on the venue map. In addition, since the orientation of the two-dimensional code reading reference direction at the installation point can be measured and registered in the information distribution server after the two-dimensional code is installed, it is easy to manufacture and install the two-dimensional code. .

It is a schematic diagram which shows the concept of the two-dimensional code which recorded the positional information and orientation information which concern on this invention. It is a schematic diagram which shows the principle of the map rotation display using a two-dimensional code. It is a block diagram which shows the structure of the portable terminal which has the map display function which concerns on Example 1 of this invention. 1 is a system configuration diagram showing a configuration of a map display system according to the present invention. It is a block diagram which shows the structure of the map display system which concerns on Example 2 of this invention. It is a block diagram which shows the structure of the map display system which concerns on Example 3 of this invention. It is a block diagram which shows the structure of the map display system which concerns on Example 4 of this invention. It is a system block diagram which shows the other structure of the map display system which concerns on Example 5 at this invention. It is a block diagram which shows the structure of the map display system which concerns on Example 6 of this invention. It is a schematic diagram for demonstrating the utilization example of the map rotation display using a two-dimensional code, (a) is a normal display state, (b) is the reading state of a two-dimensional code, (c) is the display by this invention. It is a figure which shows the state of.

  Hereinafter, specific examples of the present invention will be described in detail with reference to examples and drawings. FIG. 1 is a schematic diagram showing the concept of a two-dimensional code in which position information and azimuth information according to the present invention are recorded. FIG. 2 is a schematic diagram showing the principle of map rotation display using a two-dimensional code. FIG. 3 is a block diagram showing the configuration of the mobile terminal having the map display function according to the first embodiment of the present invention, and FIG. 4 is a system configuration diagram showing the configuration of the map display system according to the present invention. FIG. 5 is a block diagram showing the configuration of the map display system according to the second embodiment of the present invention, FIG. 6 is a block diagram showing the configuration of the map display system according to the third embodiment of the present invention, and FIG. FIG. 8 is a system configuration diagram showing another configuration of the map display system according to the fifth embodiment of the present invention, and FIG. 9 is an embodiment of the present invention. 6 is a block diagram showing a configuration of a map display system according to FIG. FIG. 10 is a schematic diagram for explaining a usage example of map rotation display using a two-dimensional code.

  Since the present invention can detect the reference direction of code reading when reading a two-dimensional code, the position information of the place where the portable terminal has read the two-dimensional code, that is, the position information of the installed point, and the two-dimensional code If the orientation information for the reading reference direction can be acquired, the map is identified from the position information, and the rotation angle for rotating the map on the display unit and displaying it is calculated from the orientation of the reading reference and the orientation information for the orientation. It focuses on the point that it can.

  In the present invention, a two-dimensional code installed at a specific point is used. For example, the two-dimensional code can be installed on a sidewalk by recording the two-dimensional code on a tile-like object. When the QR code disclosed in Patent Document 4 (Japanese Patent Laid-Open No. 2000-337853) is used as a two-dimensional code, as shown in FIG. 1, the two-dimensional code includes a tile on which the two-dimensional code is recorded. The installed position is north latitude 35 degrees 41 minutes 25.71 seconds, east longitude 139 degrees 46 minutes 05.68 seconds, the north direction with respect to the orientation of the reading reference of the two-dimensional code is 60 degrees counterclockwise with the X axis as 0 ° In the case of °, a character string of 35.41.25.71, 139.46.05.68, N = 60 is created and recorded as a QR code in the two-dimensional code.

  Note that the URL of the information distribution server can be added to this code in a system that distributes map information from the information distribution server. If the latitude / longitude, which is the position information, is recorded in units of 1/100 second, the position where the two-dimensional code is installed can be specified with a resolution of about 30 cm. This is the number of characters that can be recorded with a QR code.

  Assuming that this two-dimensional code is read in the orientation as shown in FIG. 2 when the two-dimensional code is read by the portable terminal, the two-dimensional code is compared with FIG. 1 due to the positional relationship of the reading reference orientation (Y axis, X axis). It can be seen that the data was read from a direction rotated 120 ° counterclockwise. Therefore, the read two-dimensional code image can be rotated to the reading reference direction and the contents can be read. A method of rotating a two-dimensional code to a reading reference direction is disclosed in Patent Document 5. For reading a two-dimensional code, a camera can be mounted on a portable terminal in the same manner as a camera mounted on a mobile phone or the like and used as a reading means. As a result of reading the two-dimensional code, position information can be obtained, and if the mobile terminal holds map information, the map information can be specified. In the case of a system in which the mobile terminal obtains map information from the information distribution server, the position information may be sent to the information distribution server to receive distribution of the corresponding map information.

  Also, it can be seen from the information read from the two-dimensional code that the north direction with respect to the reading reference direction of the two-dimensional code is 60 ° counterclockwise with the X axis as 0 °, and the direction in which the two-dimensional code is read Is rotated 120 °, it can be seen that there is north in the direction of 180 °. Therefore, if the map to be displayed on the mobile terminal is a normal north-up map with the north facing 90 °, the map may be rotated 90 ° and displayed.

  Thus, by recording the north direction with respect to the reading reference direction at the position where the two-dimensional code is installed in the two-dimensional code as the direction information, it is displayed on the portable terminal that has read the two-dimensional code at that point. How many times the map should be rotated can be calculated, and the rotation angle can be calculated, and based on this, the map can be rotated and displayed to provide an easy-to-understand map display. Since the map rotated and displayed in this manner is linked to the actual direction of the land (point), it is easy to understand route guidance when receiving navigation in combination with the navigation system.

  The present invention is based on the above principle. As shown in FIG. 3, the portable terminal 10 having the map display function according to the first embodiment is configured around an arithmetic control unit (CPU) 11 formed of a microcomputer. Like a general portable information terminal, a control memory 12, a storage unit (RAM) 13, a two-dimensional code reading unit 14, a communication unit 15, a power supply unit 16, an operation unit 17, a display unit 18, The map information 19 is included, and each of these elements is connected to the internal bus 111 and operates under the control of the arithmetic control unit 11 based on a program stored in the control memory 12.

  The two-dimensional code reading means 14 may be, for example, the same means as a camera mounted on a mobile phone. The two-dimensional code reading means 14 reads the two-dimensional code 40 described with reference to FIGS. Is detected and the encoded recording information is reproduced. When the two-dimensional code is a QR system, it can be read by the method disclosed in Patent Document 4 described above. The information recorded in the two-dimensional code is the position information of the specific point where the two-dimensional code is installed and the direction information of the point with respect to the reading reference direction of the two-dimensional code, as shown in FIG. When the portable terminal 10 reads the two-dimensional code 40, the position where the two-dimensional code is installed is 35 degrees 41 minutes 25.71 seconds north latitude, 139 degrees 46 minutes 05.68 seconds east, and the direction of the two-dimensional code reading reference The north azimuth is 60 ° counterclockwise with the X-axis as 0 °, and it is read from a direction rotated 120 ° counterclockwise from the positional relationship of the reading reference direction (Y-axis, X-axis). Recognize.

  The two-dimensional code reading means 14 is the position information read from the two-dimensional code, 35 degrees 41 minutes 25.71 north latitude, 139 degrees 46 minutes 05.68 seconds east, and the direction information of the point with respect to the reading reference direction. A certain 60 ° and 120 ° angle deviation obtained by reading the two-dimensional code are output. As a result, a map including the position of 35 degrees 41 minutes 25.71 seconds north latitude and 139 degrees 46 minutes 05.68 seconds east longitude is identified and read from the map information 19. On the other hand, the rotation angle calculation means 121 of the control memory 12 calculates an angle for rotating the map displayed on the display unit from the angle shift 120 ° obtained by reading the two-dimensional code.

  That is, as described with reference to FIGS. 1 and 2, from the information read from the two-dimensional code, the north direction with respect to the reading reference direction of the two-dimensional code is 60 ° counterclockwise with the X axis as 0 °. It can be seen that since the direction in which the two-dimensional code is read is rotated by 120 °, it can be seen that there is north in the direction of 180 °. Therefore, if the map to be displayed on the mobile terminal is a normal north-up map with the north facing 90 °, the map may be rotated 90 ° and displayed, and the rotation angle 90 ° is calculated. . Accordingly, the map rotation unit 122 rotates the map read from the map information 19 by 90 ° based on the rotation angle 90 ° calculated by the rotation angle calculation unit 121, and the rotated map is displayed on the display unit 18. .

  The embodiment 1 in FIG. 3 has a configuration in which the mobile terminal includes the map information, but may be a map display system configured to download the map information from the information distribution server. FIG. 4 is a diagram showing a system configuration of such a map display system, in which the mobile terminal 10 is subscribed to a communication service provider such as an Internet provider or a mobile phone, and information is transmitted via the network 20 (Internet). It is configured to be able to connect to the distribution server 30. The information distribution server 30 may be any device provided with map information. For example, an information distribution server established for service by an Internet provider, an information distribution server providing a navigation service, a company, a store, or the like is established. The map information may be acquired from the target server via the information distribution server or the server.

  In this map display system, the mobile terminal 10 reads a two-dimensional code 40 installed at a specific point such as a sidewalk, a wall, or a power pole, sends position information to the information distribution server 30, and the information distribution server 30 includes the position information. The based map information is distributed to the mobile terminal 10. And the portable terminal 10 displays the rotated map similarly to Example 1. FIG. In such a map display system, as shown in the following examples, the map may be rotated by the mobile terminal 10 or the information distribution server 30.

  FIG. 5 is a block diagram showing a configuration of a map display system according to Embodiment 2 of the present invention. This system is comprised from the portable terminal 10 which can be connected with the information delivery server 30 via the network 20 (Internet) similarly to the network structure shown in FIG. 4, and the information delivery server 30 is provided with map information. Then, the two-dimensional code 40 installed at a specific point such as a utility pole or a sidewalk is read by the portable terminal 10 and the distribution of map information including the corresponding point is received from the information distribution server 30 and displayed on the display means. As in the first embodiment, the two-dimensional code 40 stores the position information (latitude / longitude) of the point where the two-dimensional code is installed and the direction information of the point with respect to the reading reference direction of the two-dimensional code. ing.

  The configuration of the mobile terminal 10 is the same as that of the first embodiment (FIG. 3) except that it does not have map information, and includes an arithmetic control unit (CPU) 11, a control memory 12, a storage unit (RAM) 13, A dimension code reading unit 14, a communication unit 15, a power supply unit 16, an operation unit 17, and a display unit 18 are provided. In addition, the control memory 12 includes a rotation angle calculation unit 121 and a map rotation unit 122. When the two-dimensional code 40 is read by the two-dimensional code reading unit 14, position information is sent from the communication unit 15 to the information distribution server 30, and corresponding map information is distributed from the information distribution server 30.

  Further, the rotation angle calculation means 121 is distributed from the information distribution server 30 based on the direction information of the point with respect to the reading reference direction of the two-dimensional code read from the two-dimensional code and the direction in which the two-dimensional information is read. The map rotation angle is calculated based on the rotation angle calculated by the rotation angle calculation unit 121, and the rotated map is displayed on the display unit 18.

  In the second embodiment (FIG. 5), the mobile terminal 10 sends position information read from the two-dimensional code to the information distribution server 30, receives distribution of map information based on the position information from the information distribution server 30, and receives the mobile terminal. Although the map distributed from the information distribution server 30 is rotated and displayed on the display unit based on the rotation angle calculated by the mobile terminal 10, the mobile terminal 10 sends the position information and the rotation angle to the information distribution server 30. The information distribution server 30 can rotate the map and distribute it to the mobile terminal 10, and the mobile terminal 10 can be configured to display the distributed map on the display means. FIG. 6 is a diagram showing the configuration of the map display system according to Example 3 of the present invention configured as described above.

  The map display system according to the third embodiment includes a portable terminal 10 having a two-dimensional code reading unit 14 that reads a two-dimensional code 40 as shown in FIG. 6, and an information distribution server 30 that communicates with the portable terminal 10 via a network 20. Consists of. The configuration of the mobile terminal 10 is basically the same as that of the mobile terminal 10 (see FIG. 5) in the second embodiment, but the mobile terminal 10 does not have map rotation means, and the information distribution server 30 performs map rotation. This is different from the second embodiment.

  The portable terminal 10 reads the two-dimensional code 40, sends the position information recorded in the two-dimensional code 40 to the information distribution server 30, and uses the rotation angle calculation means 121 in the same manner as in the first and second embodiments to map. And the rotation angle is sent to the information distribution server 30. The information distribution server 30 identifies corresponding map information based on the position information received from the mobile terminal 10, rotates the map based on the rotation angle, and distributes the rotated map information to the mobile terminal 10. The mobile terminal 10 displays a map on the display unit based on the distributed map information.

  In the map display system according to the second and third embodiments, the two-dimensional code 40 includes the position information of the point where the two-dimensional code 40 is installed and the azimuth information of the point with respect to the direction of the reading reference of the two-dimensional code. The ID information and the position information for identifying the two-dimensional code are recorded in the two-dimensional code, and each two-dimensional code is installed in the information distribution server in association with the ID code. The azimuth information of the point with respect to the reading reference direction of the two-dimensional code at the point is stored, the portable terminal 10 reads the two-dimensional code, sends the position information and the ID information to the information distribution server 30, and the information distribution server 30 It is also possible to receive the azimuth information of the point with respect to the orientation of the reading reference of the two-dimensional code.

  As shown in FIG. 7, the map display system according to the fourth embodiment includes a mobile terminal 10 having a two-dimensional code reading unit 14 that reads a two-dimensional code 40, and an information distribution server 30 that communicates with the mobile terminal 10 via a network 20. Consists of. In the two-dimensional code 40, position information on the installation position and ID information for identifying the two-dimensional code are recorded. The configuration of the portable terminal 10 is basically the same as that of the portable terminal 10 (see FIG. 5) in the second embodiment, but the information distribution server 30 includes a storage unit 31, and the ID of each two-dimensional code is stored in the storage unit 31. The second embodiment is different from the second and third embodiments in that azimuth information of the point with respect to the reading reference direction of the two-dimensional code is stored at the point where each two-dimensional code is installed in association with the information.

  The portable terminal 10 reads the two-dimensional code 40 and sends the position information and ID information recorded in the two-dimensional code 40 to the information distribution server 30. The information distribution server 30 stores the corresponding two-dimensional information based on the ID information from the storage means 31. The azimuth information of the point with respect to the direction of the reading reference of the dimension code is read and transmitted to the mobile terminal 10, and the mobile terminal 10 uses the azimuth information to calculate the rotation angle by which the rotation angle calculation means 121 rotates the map, The map information distributed from the information distribution server 30 is rotated by the map rotation means 122 and displayed on the display means 18.

  In the fourth embodiment, as in the third embodiment (see FIG. 6), the mobile terminal 10 does not have the map rotation means, and the rotation angle calculated by the rotation angle calculation means 121 is sent to the information distribution server 30 to obtain information. It can also be set as the structure (refer FIG. 6, Example 3) which rotates the map delivered to the portable terminal 10 by the delivery server 30. FIG. According to the configuration of the fourth embodiment, the installation work of the two-dimensional code is facilitated.

  That is, in the first to third embodiments, since the orientation information at the installation point is recorded in the two-dimensional code, the correction work becomes difficult if the two-dimensional code is installed in the wrong direction. For example, when a two-dimensional code is recorded on a sidewalk tile, it can only be corrected by pasting the tile again. In addition, tiles must be manufactured in consideration of the delicate orientation of the installation point, which is a difficult task. On the other hand, according to the configuration of the fourth embodiment, only the position information (latitude and longitude) of the installation point is constructed by laying tiles at the correct place, and each two-dimensional code identifies the two-dimensional code together with the position information. It is possible to record an ID for recording, measure the direction and actual orientation of each two-dimensional code after completion, and register the ID in association with the ID information in the storage means of the information distribution server. For this reason, the above-mentioned difficulty can be reduced, and the position information can be read directly from the two-dimensional code, and can be shared with other services other than the map display.

  In the fourth embodiment, the mobile terminal 10 includes the rotation angle calculation unit 121, sends the ID information read from the two-dimensional code 40 to the information distribution server, obtains the orientation information corresponding to the corresponding two-dimensional code, and obtains the rotation angle. Although the calculation means 121 calculates the rotation angle for rotating the map, the rotation angle calculation means is provided in the information distribution server 30, and the rotation angle for rotating the map is calculated on the information distribution server side to the mobile terminal 10. The map information distributed together with the map information or the map information rotated based on the calculated rotation angle may be distributed to the mobile terminal 10.

  In the map display system according to the fourth embodiment, the position information of the point where the two-dimensional code 40 is installed in the two-dimensional code 40 and the ID information for identifying the two-dimensional code 40 are recorded. However, only the ID information for identifying the two-dimensional code is recorded in the two-dimensional code, and the two-dimensional code is read at the point where each two-dimensional code is installed in association with the ID code in the information distribution server. The azimuth information of the point with respect to the reference direction and the position information of the installation position are stored, the portable terminal 10 reads the two-dimensional code, sends the ID information to the information distribution server 30, and the information distribution server 30 sends the two-dimensional code. It is also possible to adopt a configuration for receiving azimuth information of the point with respect to the orientation of the reading reference.

  FIG. 8 is a diagram showing a network configuration of such a map display system. The mobile terminal 10 is subscribed to a communication service provider such as an Internet provider or a mobile phone, and information is distributed via the network 20 (Internet). The server 30 can be connected. The information distribution server 30 may be any device provided with map information. For example, an information distribution server established for service by an Internet provider, an information distribution server providing a navigation service, a company, a store, or the like is established. The map information may be acquired from the target server via the information distribution server or the server. The handheld computer 50 includes a two-dimensional code reading unit, a GPS positioning unit, an electronic compass, and a communication unit, and has been authenticated as an information registration terminal for the information distribution server 30.

  In this map information display system, only the ID information for identification and the URL information for data registration in the information distribution server 30 are recorded in the two-dimensional code 40, and a specific point such as a sidewalk, a wall, or a utility pole is recorded. Installed. Then, the ID information of each two-dimensional code 40 is read by the handheld computer 50, the position information (latitude / longitude) of the installation point is obtained by the GPS positioning means, the direction thereof is examined by an electronic compass, and the direction of the two-dimensional code reading reference The direction of the point with respect to is calculated, and this information is sent to the information distribution server 30 by the URL read from the two-dimensional code 40, and is registered in the storage means in association with the ID information of each two-dimensional code.

  The configuration when this map display system is used is the same as the configuration of FIG. In FIG. 7, the mobile terminal 10 reads a two-dimensional code 40 installed at a specific point such as a sidewalk, a wall, or a utility pole, sends ID information to the information distribution server 30, and the information distribution server 30 receives the ID information from the storage means. Originally, the position information corresponding to the two-dimensional code and the azimuth information of the point with respect to the direction of the two-dimensional code reading reference are read out. The information distribution server 30 sends the azimuth information of the point with respect to the read two-dimensional code reading reference direction to the mobile terminal 10, and specifies corresponding map information based on the position information and distributes it to the mobile terminal 10.

  The portable terminal 10 calculates the rotation angle of the map by the rotation angle calculation means 121 from the azimuth information of the point with respect to the direction of the two-dimensional code reading reference sent from the information distribution server 30. Then, based on the rotation angle calculated by the rotation angle calculation unit 121, the mobile terminal 10 rotates the map information distributed from the information distribution server 30 by the map rotation unit 122, and displays the rotated map by the display unit 18. To do. In FIG. 7, the map is rotated by the mobile terminal 10, but the information distribution server 30 may rotate the map.

  FIG. 9 is a diagram showing a configuration of a map display system according to Embodiment 6 of the present invention in which the map is rotated by the information distribution server 30. The map display system shown in FIG. 9 includes a mobile terminal 10 having a two-dimensional code reading unit 14 that reads a two-dimensional code 40 and an information distribution server 30 that communicates with the mobile terminal 10 via a network 20. The configuration of the mobile terminal 10 is basically the same as that of the mobile terminal 10 (see FIG. 5) in the second embodiment, but the mobile terminal 10 does not have map rotation means, and the information distribution server 30 performs map rotation. This is different from FIG.

  The portable terminal 10 reads a two-dimensional code 40 installed at a specific point such as a sidewalk, a wall, or a utility pole, sends ID information to the information distribution server 30, and the information distribution server 30 reads the ID information from the storage means 31. The position information corresponding to the two-dimensional code and the direction information of the point with respect to the direction of the two-dimensional code reading reference are read out. The information distribution server 30 sends the azimuth information of the point with respect to the read two-dimensional code reading reference direction to the portable terminal 10 and specifies the corresponding map information based on the position information. On the other hand, the mobile terminal 10 calculates the rotation angle at which the rotation angle calculation means 121 should rotate the map based on the azimuth information of the point with respect to the direction of the two-dimensional code reading reference sent from the information distribution server 30. Send to distribution server 30.

  The information distribution server 30 rotates the map information specified based on the position information by the map rotation means 32 based on the rotation angle sent from the mobile terminal 10, and distributes the rotated map information to the mobile terminal 10. The portable terminal 10 displays the map information sent from the information distribution server 30 on the display means 18.

  In the said Example 5, 6, the portable terminal 10 is provided with the rotation angle calculation means 121, ID information read from the two-dimensional code 40 is sent to an information delivery server, and direction information corresponding to the corresponding two-dimensional code is obtained. The rotation angle calculation means 121 calculates the rotation angle for rotating the map. However, the rotation angle calculation means is provided in the information distribution server 30, and the rotation angle for rotating the map is calculated on the information distribution server side. It can also be set as the structure distributed to the terminal 10 with the map information, or the map information rotated based on the calculated rotation angle to the portable terminal 10.

  In the fifth and sixth embodiments, the handheld computer 50 has been described as measuring and registering information regarding the installation location of each two-dimensional code 40 to the information distribution server 30 via the network. 2 does not need to record the URL of the information distribution server 30 in the two-dimensional code 40, the handheld computer 50 that has finished collecting information is connected to the information distribution server 30 by cable connection. It is also possible to adopt a configuration in which information on the installation location of the code 40 is registered.

  As in the fifth and sixth embodiments, only the ID information is recorded in the two-dimensional code 40, the position information of the point where the two-dimensional code is installed in the information distribution server, and the two-dimensional code reading reference When the configuration is such that the azimuth information of the point with respect to the direction is stored in association with the ID information, there are the following advantages. In other words, according to this configuration, a two-dimensional code recording body can be formed in a sheet shape and pasted or peeled off and installed at different points for reuse. This is useful when you install a code and distribute a venue map guide.

  According to the portable terminal or the map display system of the present invention, not only the map can be displayed in accordance with the actual direction but also the object can be displayed in an easy-to-understand direction. The fronts of museums, concert halls, government offices, etc. are not always located in the direction of east, west, south, and north. For example, when linking to a URL recorded in a two-dimensional code posted on a medium such as a book and obtaining and displaying a map or a guide map from this URL, the orientation of the building to be displayed is conventionally displayed in North Up It was only done. According to the present invention, it is also possible to display the entrance of a building so as to face downward using the orientation information of the point with respect to the orientation of the reading reference of the two-dimensional code.

  FIG. 10 is a schematic diagram for explaining an example of use of map rotation display using a two-dimensional code, and shows a display of a concert hall whose front entrance is in the northeast. An introductory article and a two-dimensional code through this concert hall are put on a guide book, a two-dimensional code is read by a normal mobile phone with a camera, etc., and a map obtained by linking to the URL recorded in the two-dimensional code is usually displayed. When displayed in the north up, it is displayed in the direction of FIG. At this time, as shown in FIG. 10 (b), when the information of the direction N = 315 is recorded in the two-dimensional code, the two-dimensional code is read by the portable terminal shown in FIG. The rotation angle of the two-dimensional code of the guide book is 0, the north direction is recognized as 315 °, the rotation angle 225 ° is calculated, and the map rotation is executed. Therefore, the map displayed on the display means is as shown in FIG. 10 (c), the front entrance is facing down, and it feels as if it is in front of the front entrance, and the images match the posted photos. You will be able to provide very easy-to-understand guidance.

  In each of the embodiments described above, the portable terminal is assumed to use a general cellular phone with a camera on the opposite side of the main LCD display. However, the light of the camera as in the revolver type is described. When the display rotates with respect to the axis or a mobile phone whose optical axis of the camera is significantly different from the direction of the main LCD display is used as the terminal, the display direction is in line with the spirit of the present invention in each design. Needless to say, the rotation angle is calculated.

  In the method of recording the azimuth information in the two-dimensional code, for example, an agreement may be made that the upward direction is always north as viewed from the reading reference direction as the implicit azimuth information. In this case, even if the character string of the azimuth information is not included, it is equivalent to the information N = 90 being included. When installing a two-dimensional code having such implicit azimuth information, it is necessary to install the two-dimensional code so that the upper direction is north as viewed from the reading reference direction, but the amount of information of the two-dimensional code is reduced. There is an advantage that you will be able to.

  As described above, according to the present invention, it can be used for providing location information in underground malls and buildings where GPS cannot be used, and the display direction can be determined in association with the direction of the two-dimensional code. This makes it possible to provide easy-to-understand guidance. It is also possible to arrange a number of two-dimensional codes and perform walking route guidance while updating the position information by following them. For example, by placing a two-dimensional code at an intersection in a corridor of a large hospital, it can also be used as a system for navigating routes such as reception, outpatient, accounting, and hospital visits.

DESCRIPTION OF SYMBOLS 10 ... Portable terminal 11 ... Calculation control part 12 ... Control memory 121 ... Rotation angle calculation means 122 ... Map rotation means 13 ... Memory | storage part (RAM)
14 ... Two-dimensional code reading means 15 ... Communication part 16 ... Power supply part 17 ... Operation part 18 ... Display means 111 ... Internal bus 20 ... Network 30 ... Information distribution server 40 ... Two-dimensional code

Claims (4)

A two-dimensional code reading means for reading a two-dimensional code, a display means for displaying a map, and a rotation angle calculation means, and calculating a rotation angle by specifying map information based on information read from the two-dimensional code, A two-dimensional code read by a portable terminal that rotates and displays a map on a display means,
A two-dimensional code recording body, wherein position information of a point where the two-dimensional code is installed and azimuth information of the point with respect to a reading reference direction of the two-dimensional code are recorded. An information distribution server for distributing map information to the mobile terminal based on information transmitted from the mobile terminal;
It is composed of a two-dimensional code reading means for reading a two-dimensional code installed at a specific point, and a portable terminal provided with a display means for displaying a map,
The mobile terminal or the information distribution server includes a rotation angle calculation means and / or a map rotation means,
Based on the information recorded in the two-dimensional code, the position information of the point where the two-dimensional code is installed and the azimuth information of the point with respect to the reading reference direction of the two-dimensional code are obtained, and the position information A map display system that determines map information based on the information, calculates a rotation angle from the orientation information of the point with respect to the reading reference direction of the two-dimensional code, rotates the map based on the rotation angle, and displays the map on display means A two-dimensional code used,
An ID information for identifying the two-dimensional code is recorded in the two-dimensional code.   The two-dimensional code recording body according to claim 2, wherein the two-dimensional code further includes position information of a point where the two-dimensional code is installed.   The two-dimensional code recording body according to claim 2 or 3, wherein the two-dimensional code is recorded with azimuth information of the point with respect to the orientation of the reading reference of the two-dimensional code.

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