JP6790213B2 - Information providing device, information acquisition device, information providing method, information acquisition method, and program - Google Patents

Description

The present invention provides an information providing device and an information providing method for providing target information regarding a recognition target existing around the current position and position correspondence information associated with the position information, and an information acquisition device and information for acquiring such information. It relates to acquisition methods and programs that cause computers to perform these methods.

Patent Document 1 searches for store information around the current location based on the location information acquired by the GPS function of the mobile information terminal or the like possessed by the user, and distributes the store information obtained by the search to the user's mobile information terminal. The server to be used is disclosed.

Japanese Unexamined Patent Publication No. 2012-3428

When a large number of mobile information terminals (information acquisition devices) request the server (information providing device) to search for store information or the like based on the location information of the current location, a large search load is generated on the server. As a result, a delay occurs in the response to the search request, and the mobile information terminal may not be able to properly acquire the information corresponding to the current location at the current location.

The present invention provides an information providing device, an information acquiring device, an information providing method, an information acquiring method, and a program capable of suppressing a delay in providing information corresponding to a current location from an information providing device to an information acquiring device.

In the first aspect of the present invention, there is provided an information acquisition device that acquires target information regarding a recognition target existing around the current position from an information providing device via a communication line.
The information providing device is provided corresponding to each of the plurality of divided areas obtained by dividing the predetermined target area into a plurality of divided areas, and provides target information about the recognition target existing in each divided area. The information storage file to be stored is stored.
The information acquisition device
A location information acquisition unit that acquires location information indicating the current location,
A communication unit that communicates with the information providing device via a communication line,
It includes a control unit.
The control unit
Based on the location information acquired by the location information acquisition unit, the file name of the information storage file to be acquired is determined.
The transmission request signal of the information storage file corresponding to the determined file name is transmitted to the information providing device via the communication unit.
The information storage file transmitted from the information providing device is received via the communication unit as a response to the transmission request signal.

In the second aspect of the present invention, there is provided an information acquisition device that acquires position correspondence information associated with position information from an information providing device via a communication line.
The information providing device is provided corresponding to each of the plurality of divided areas obtained by dividing the predetermined target area into a plurality of divided areas, and provides the position corresponding information corresponding to the position information belonging to each divided area. Stores multiple information storage files to be stored.
The information acquisition device
A location information acquisition unit that acquires location information indicating the current position,
A communication unit that communicates with the information providing device via a communication line,
It includes a control unit.
The control unit
Based on the location information acquired by the location information acquisition unit, the file name of the information storage file to be acquired is determined.
The transmission request signal of the information storage file of the determined file name is transmitted to the information providing device via the communication unit, and the transmission request signal is transmitted.
The information storage file transmitted from the information providing device is received via the communication unit as a response to the transmission request signal.

In a third aspect of the present invention, there is provided an information acquisition method in which an information acquisition device acquires target information regarding a recognition target existing around a current position from an information providing device via a communication line.

In a fourth aspect of the present invention, there is provided an information acquisition method in which an information acquisition device acquires position correspondence information associated with position information from an information providing device via a communication line.

In a fifth aspect of the present invention, there is provided a program that causes the computer to function as a means of executing the information acquisition method of the fourth or fifth aspect of the present invention.

In a sixth aspect of the present invention, there is provided an information providing device that provides target information regarding a recognition target existing around the current position to an information acquisition device via a communication line.
The information providing device is
Information storage that is provided corresponding to each of a plurality of divided areas obtained by dividing a predetermined target area into a plurality of divided areas in a predetermined manner and stores target information about a recognition target existing in each divided area. A storage unit that stores files and
A communication unit that communicates with the information acquisition device via a communication line,
It includes a control unit.
The control unit
When a transmission request signal for an information storage file with a specified file name is received from the information acquisition device via the communication unit, the information storage file corresponding to the specified file name is read from the storage unit.
The read information storage file is transmitted to the information terminal via the communication unit.

In a seventh aspect of the present invention, there is provided an information providing device that provides position correspondence information associated with position information to an information acquisition device via a communication line.
The information providing device is
A plurality of information that is provided corresponding to each of a plurality of divided areas obtained by dividing a predetermined target area into a plurality of divided areas in a predetermined manner and stores position corresponding information corresponding to the position information belonging to each divided area. A storage unit that stores stored files and
A communication unit that communicates with the information acquisition device via a communication line,
It includes a control unit.
The control unit
When a transmission request signal for an information storage file with a specified file name is received from the information acquisition device via the communication unit, the information storage file corresponding to the specified file name is read from the storage unit.
The read information storage file is transmitted to the information terminal via the communication unit.

In an eighth aspect of the present invention, there is provided an information providing method in which an information providing device provides an information acquiring device with target information regarding a recognition target existing around a current position via a communication line.

In a ninth aspect of the present invention, there is provided an information providing method in which an information providing device provides a position correspondence information associated with a position information to an information acquisition device via a communication line.

In a tenth aspect of the present invention, a program is provided that causes a computer to function as a means of performing the information providing method of the eighth or ninth aspect of the present invention.

According to the present invention, a plurality of target information (or position correspondence information associated with the position information) regarding the recognition target existing around the current position is stored based on the position information acquired by the position information acquisition unit. The file name of the information storage file to be acquired is determined among the information storage files. Then, the transmission request signal of the information storage file corresponding to the determined file name is transmitted to the information providing device, and the information storage file transmitted from the information providing device is received in the information acquisition device as a response to the transmission request signal.

Therefore, when the information providing device provides the information acquisition device with the target information (or the position correspondence information associated with the position information) regarding the recognition target existing around the current position, it is based on the position information indicating the current position. The process of searching the database etc. becomes unnecessary. Therefore, problems such as delay in response to the search request do not occur, and the delay in acquiring the information corresponding to the current location in the information acquisition device is suppressed.

It is a block diagram of the information system of Embodiment 1. It is an external view of a mobile information terminal. It is a block diagram which shows the structure of a mobile information terminal. It is a figure which shows the content stored in the ROM of the mobile information terminal. It is a block diagram which shows the structure of a server. It is a figure which shows the contents stored in the HDD of a server. It is a figure explaining the information storage file stored in the HDD of a server. It is a figure explaining the content of the information recorded in the information storage file. It is a figure explaining the division area. It is a figure which shows the image displayed on the display part of a mobile information terminal. It is a flowchart explaining the flow of the marker information providing operation by a server, and the marker information acquisition operation by a mobile information terminal. It is a figure explaining the division area of Embodiment 2. It is a figure explaining the division area. It is a figure explaining the division area. It is a figure explaining the information storage file stored in the HDD of a server. It is a flowchart explaining the flow of the marker information providing operation by a server, and the marker information acquisition operation by a mobile information terminal. It is a figure explaining the determination process of the information storage file to be acquired by a mobile information terminal.

The information system according to the embodiment of the present invention will be described with reference to the drawings.

(Embodiment 1)
1. 1. Configuration FIG. 1 is a configuration diagram of an information system according to the first embodiment.

The information system of the present embodiment includes a mobile information terminal 100 and a server 200. The mobile information terminal 100 and the server 200 are connected to each other via a communication line 300 such as the Internet. The mobile information terminal 100 is an example of a device to which the information acquisition device of the present invention is applied, and the server 200 is an example of a device to which the information providing device of the present invention is applied.

1-1. Configuration of Mobile Information Terminal FIG. 2 is an external view of the mobile information terminal 100.

A display unit 11, a camera 12, and an operation unit 13 are provided on the outer surface of the mobile information terminal 100. A touch panel 14 is provided on the surface of the display unit 11.

FIG. 3 is a block diagram showing the configuration of the mobile information terminal 100.

In addition to the display unit 11, the camera 12, the operation unit 13, and the touch panel 14, the mobile information terminal 100 includes a central processing unit 21 (hereinafter referred to as "CPU 15"), a non-volatile memory 16 (hereinafter referred to as "ROM 16"), and volatile. A memory 17 (hereinafter referred to as “RAM 17”), a communication unit 18, and a position information acquisition unit 19 are provided.

The CPU 15 performs arithmetic processing. The CPU 15 realizes various functions described later in the portable information terminal 100 using a computer by performing arithmetic processing based on the OS and the program described later recorded in the ROM 16.

The ROM 16 stores a program and various data that are arithmetically processed by the CPU 15.

The RAM 17 temporarily stores a program, data, or the like when the CPU 15 executes the program.

The display unit 11 displays an image based on the image data for display output from the CPU 15. The display unit 11 is, for example, a liquid crystal display panel or an organic EL display panel.

The operation unit 13 has a plurality of buttons. The button is, for example, a push button type switch, and can give instructions for function selection and function execution.

The touch panel 14 is a flat pointing device. The touch panel 14 is provided so as to be superimposed on the display surface of the display unit 11 and outputs a signal regarding the position touched by the user.

The camera 12 takes an image of the subject and generates image data.

The communication unit 18 converts the signal input from the CPU 15 into a signal of a predetermined communication standard and outputs the signal to the communication line 300. Further, the communication unit 18 converts the signal input via the communication line 300 into a signal in a format that can be used by the CPU 15 and outputs the signal to the CPU 15. The communication unit 18 corresponds to communication standards such as W-CDMA, LTE, and Wimax, and communication standards such as wireless LAN.

The position information acquisition unit 19 acquires the position information of the current location. The position information acquisition unit 19 can be configured by, for example, a GPS receiver, and outputs information indicating the latitude and longitude of the current location as the position information of the current location.

FIG. 4 is a diagram showing the contents stored in the ROM 16 of the mobile information terminal 100.

The ROM 16 stores an operating system 31 (hereinafter, appropriately referred to as “OS 31”), an application program 32, and various data 33.

1-2. Server Configuration FIG. 5 is a block diagram showing the configuration of the server 200.

The server 200 includes a central processing unit 21 (hereinafter referred to as "CPU 21"), a hard disk drive 22 (hereinafter referred to as "HDD 22"), a volatile memory 23 (hereinafter referred to as "RAM 23"), and a communication unit 24.

The CPU 21 performs arithmetic processing. The CPU 21 realizes various functions described later in the server 200 using a computer by performing arithmetic processing based on the OS and the program described later recorded in the HDD 22.

The HDD 22 stores a program and various data that are arithmetically processed by the CPU 21. A solid state drive (SSD) may be provided instead of the HDD 22.

The RAM 23 temporarily stores a program, data, or the like when the CPU 21 executes the program.

The communication unit 24 converts the signal input from the CPU 21 into a signal of a predetermined communication standard and outputs the signal to the communication line 300. Further, the communication unit 24 converts the signal input via the communication line 300 into a signal in a format that can be used by the CPU 21 and outputs the signal to the CPU 21. The communication unit 24 corresponds to communication standards such as W-CDMA, LTE, and Wimax, and communication standards such as wireless LAN.

FIG. 6 is a diagram showing the contents of data and the like stored in the HDD 22 of the server 200.

The HDD 22 stores an operating system 41 (hereinafter, appropriately referred to as “OS 41”), a program such as an application program 42, various data 43, and a plurality of information storage files 44.

The information storage file 44 is a file in which marker information regarding markers is recorded. A marker is a recognition target when performing marker recognition processing (spatial recognition processing, feature extraction processing), augmented reality (AR) processing, etc. based on an image acquired by a camera, and is a mat (rug), poster, sticker. , Traffic signs, signs, buildings, structures, parts of buildings and structures (eg windows and doors), and any other object available in spatial awareness. The information storage file 44 is provided for each predetermined target area described later. The plurality of information storage files 44 are stored in the HDD 22 in advance before the start of operation of this information system, and when it is desired to register new marker information or when the content of the already registered marker information is changed or deleted. It can be updated at any time and at any other time.

FIG. 7 is a diagram illustrating an information storage file 44 stored in the HDD 22.

In the example of FIG. 7, as the information storage file 44, information storage files 44 such as "36061314000517.xxx", "36061314000518.xxx", "36061414050016.xxx", "360614140517.xxx", "36061414050018.xxx" are recorded. ing.

FIG. 8 is a diagram illustrating an example of the content of the information recorded in the information storage file 44. As an example, FIG. 8 shows the contents of the information recorded in the above-mentioned information storage file 44 “360613140517.xxx”.

The information storage file 44 having the file name "360613140517.xxx" stores marker information related to markers M1, M2, M3, M4, M5, and M6. The marker information includes a feature amount of the marker, guidance information, and position information. In this example, the information storage file 44 records the position information, but the information storage file 44 may not include the position information. If the position information is included, when the marker is recognized in the captured image, for example, the position of the marker can be accurately displayed on the map on the display unit 11 of the mobile information terminal 100. ..

The feature amount is an amount indicating the feature of an image obtained by capturing the marker from a predetermined direction. The feature amount is an amount that has been generally used conventionally in image similarity comparison (image recognition) in feature detection processing (spatial recognition processing). One marker may be imaged from a plurality of directions, and feature amounts may be recorded for each of the plurality of captured images. As a result, similar comparisons can be made for one marker based on a plurality of feature quantities, and the recognition probability of the markers is increased.

The guidance information is information to be displayed on the display unit 11 of the mobile information terminal 100 when the marker is recognized.

The position information is information indicating the latitude and longitude of the place where the marker exists.

The marker M1 is a mat arranged in a donut shop, and information such as "C1", "half price of all donuts", and "36061385, 140051711" is recorded as feature amount, guidance information, and position information.

The marker M2 is a mat placed in a clothing store, and information such as "C2", "during bargain", and "36061386, 140051740" is recorded as feature amount, guidance information, and position information.

The marker M3 is a poster arranged at the gas station, and information such as "C3", "regular gasoline 120 yen / L", and "36061378, 140051789" is recorded as feature amount, guidance information, and position information.

Marker M4 is a poster placed at the parking lot entrance of a home goods store, and information such as "C4", "our store entrance is on the left", and "36061323, 140051723" is recorded as feature amount, guidance information, and location information. There is.

The marker M5 is a traffic sign arranged on the road, and information such as "C5", "school road", and "36061324, 140051747" is recorded as feature amount, guidance information, and position information.

The marker M6 is a sticker affixed to the entrance door of a convenience store, and information such as "C6", "reservation accepted", and "36061315, 140051778" is recorded as feature amount, guidance information, and location information.

FIG. 9 is a diagram illustrating a divided area.

The information storage file 44 is provided so as to correspond to each of a plurality of divided areas Ar obtained by dividing (dividing) a predetermined target area based on latitude and longitude. The predetermined target area is an area for providing services by this information system. The predetermined target area is the whole world, the whole of Japan, one or more prefectures, or any other area having an arbitrary range. In the present embodiment, the divided area Ar is configured as a rectangular area in which a predetermined target area is divided in the latitude direction and the longitude direction in units of 1 second. For example, in FIG. 8, the divided area Ar surrounded by the latitude lines of 36 degrees 06 minutes 13 seconds and 36 degrees 06 minutes 14 seconds and the longitude lines of 140 degrees 05 minutes 17 seconds and 140 degrees 05 minutes 18 seconds is shown in FIG. The six markers M1, M2, M3, M4, M5, and M6 described above are present.

The file name of the information storage file 44 is set based on the latitude and longitude. For example, the file name of the information storage file 44 is set based on the latitude on the minor latitude end side and the longitude on the minor longitude end side of the divided area Ar. For example, the file name of the divided area Ar surrounded by the latitude lines of 36 degrees 06 minutes 13 seconds and 36 degrees 06 minutes 14 seconds and the longitude lines of 140 degrees 05 minutes 17 seconds and 140 degrees 05 minutes 18 seconds is , The latitude is set to "360613140517.xxx" based on the latitude 36 degrees 06 minutes 13 seconds on the minor latitude end side of the division area Ar and the longitude 140 degrees 05 minutes 17 seconds on the minor longitude end side.

2. 2. Operation In the present embodiment, the marker information acquisition operation by the mobile information terminal 100 is realized by executing the application program 32 stored in the mobile information terminal 100 on the CPU 15. Further, the marker information providing operation by the server 200 is realized by executing the application program 42 stored in the server 200 on the CPU 21.

2-1. Outline of operation The mobile information terminal 100 of the present embodiment performs feature detection processing (spatial recognition processing) based on a feature amount or the like on an image captured at the current location, so that the features match or are constant in the image. It is determined whether or not there are markers that are similar to each other to a certain extent, and if so, the guidance information corresponding to the markers is notified by voice or image. FIG. 10 is a diagram showing an example thereof, and when a marker M (mat) is detected in the image G captured by the camera 12, the guidance information J associated with the marker M is transferred to the captured image G. Display in layers. This example shows a case where the marker M is a mat and the information "half price of all donuts" is displayed as guidance information. As a method of the above-mentioned feature detection process (spatial recognition process), a known method can be used. Further, as a method of superimposing and displaying guidance information, a known augmented reality (AR) technique can be used. At this time, the mobile information terminal 100 may display a map of the vicinity of the site and display the position of the marker on the map based on the position information included in the acquired marker information.

The feature amount and guidance information required for the above operation are provided from the server 200 via a communication line as one piece of information stored in the information storage file 44 corresponding to the divided area Ar including the current location, based on the position information of the current location. Will be done. Hereinafter, the marker information providing process and the marker information acquisition process will be described in detail.

2-2. Marker information providing process and marker information acquisition process FIG. 11 is a flowchart illustrating a flow of a marker information providing process by the server 200 and a marker information acquisition operation by the mobile information terminal 100. The marker information acquisition process in the mobile information terminal 100 is repeated at a predetermined cycle.

The CPU 15 of the mobile information terminal 100 acquires the position information (latitude, longitude) of the current location from the position information acquisition unit 19 (S11). In the following description, the position information acquisition unit 19 shall output the latitude and longitude of the current location in 1/100 second units.

The CPU 15 of the mobile information terminal 100 determines the file name of the information storage file 44 to be acquired based on the acquired position information. For example, the acquired latitude and longitude are arranged in the order of latitude and longitude by truncating the digits after the critical point in seconds, and the character string obtained by arranging the strings with a predetermined extension is stored as information. It is set as the file name of the file 44 (S12). For example, if the latitude is 36 degrees 06 minutes 13.78 seconds and the longitude is 140 degrees 05 minutes 17.56 seconds, the file name is set to "360613140517.xxx".

The CPU 15 of the mobile information terminal 100 determines whether or not the set file name is the same as the file name determined in the processing of the previous cycle according to this flowchart (S13).

If the file name is the same as the file name determined in the process of the previous cycle (YES in S13), the CPU 15 of the mobile information terminal 100 returns to the process of step S11. If the file name is the same as the file name determined in the processing of the previous cycle, it is because the information storage file 44 of the file name has already been downloaded.

If the file name is not the same as the file name determined in the processing of the previous cycle (NO in S13), the CPU 15 of the mobile information terminal 100 generates a signal (transmission request signal) requesting transmission of the information storage file 44 with the determined file name. Then, it is transmitted to the server 200 via the communication unit 18 (S14).

When the transmission request signal of the information storage file 44 is received via the communication unit 24, the CPU 15 of the server 200 reads the information storage file 44 of the received file name from the HDD 22 and transmits the read file via the communication unit 18 ( S15).

When the CPU 15 of the mobile information terminal 100 receives the information storage file 44 from the server 200, it stores it in the ROM 16 (S16).

3. 3. Effects, etc. According to the mobile information terminals 100 of the first and second embodiments, a plurality of information storage files for storing marker information regarding markers existing around the current position based on the position information acquired by the position information acquisition unit 19. The file name of the information storage file 44 to be acquired is determined among the 44. The transmission request signal of the information storage file 44 corresponding to the determined file name is transmitted to the server 200, and the information storage file 44 transmitted from the server 200 is received by the portable information terminal 100 as a response to the transmission request signal.

Therefore, when the server 200 provides the mobile information terminal 100 with the target information regarding the recognition target existing around the current position, it is not necessary to search the database or the like based on the position information indicating the current position. Therefore, problems such as delay in response to the search request do not occur, and the delay in acquiring the information corresponding to the current location is suppressed in the mobile information terminal 100.

Although it is possible to improve the performance by improving the performance of the CPU of the server or increasing the capacity of the memory, the cost of constructing the server increases. According to the present invention, since the search operation for marker information becomes unnecessary, the delay in providing the position correspondence information corresponding to the current location in the server 200 (information providing device) without greatly improving the server performance. Can be suppressed.

Further, even when the transfer requests of the information storage file 44 are temporarily concentrated, the load can be distributed by using an inexpensive device such as a load balancer.

(Embodiment 2)
The second embodiment will be described. In the first embodiment, the divided area Ar corresponding to the information storage file 44 is an area having a range of 1 second in each of the latitude direction and the longitude direction, and the ranges are set so as not to overlap each other. In the embodiment, each divided area Ar has the same size as that of the first embodiment, but is divided by shifting by a predetermined amount in the latitude direction and the longitude direction so as to overlap with at least the adjacent divided areas Ar. There is. The details will be described below.

As described above, the divided area Ar is a rectangular area having a range of 1 second in each of the latitude direction and the longitude direction. Then, in the present embodiment, the division is performed by shifting the latitude direction and the longitude direction by 0.25 seconds, respectively. Further, each division area Ar is divided so that the upper end, the lower end, the left end, and the right end pass through the positions of 0.00 seconds, 0.25 seconds, 0.50 seconds, or 0.75 seconds. 12, FIG. 13 and FIG. 14 are diagrams showing examples thereof. Specifically, FIG. 12 is divided so that the upper end and the lower end of the division area Ar pass the position of 0.75 seconds in latitude, and the left end and the right end of the division area Ar pass the position of +0.25 seconds in longitude. An example of the divided area Ar group is shown. In FIG. 13, the upper end and the lower end of the divided area Ar pass through the position of 0.50 seconds in latitude, and the left end and the right end of the divided area Ar pass through the position of 0.50 seconds in longitude of the divided area Ar group. An example is shown. In FIG. 14, the upper end and the lower end of the divided area Ar pass through the position of 0.25 seconds in latitude, and the left end and the right end of the divided area Ar pass through the position of 0.75 seconds in longitude of the divided area Ar group. An example is shown. Although not shown, the division area Ar group and the division area Ar group so that the upper end and the lower end of the division area Ar pass the position of 0.25 seconds in the latitude and the left end and the right end of the division area Ar pass the position of 0.25 seconds in the longitude. There is also a group of divided areas Ar divided so that the upper and lower ends of the divided area Ar pass through the position of 0.75 seconds in latitude and the left and right ends of the divided area Ar pass through the position of 0.75 seconds in longitude. ..

The file name of the information storage file 44 in the second embodiment is set based on the latitude and longitude as in the first embodiment, but since the number of characters after the decimal point is increased by two digits, the number of characters in the file name is four. It has increased.

For example, in FIG. 12, the latitude lines of 36 degrees 06 minutes 12.75 seconds and 36 degrees 06 minutes 13.75 seconds and the longitude lines of 140 degrees 05 minutes 17.25 seconds and 140 degrees 05 minutes 18.25 seconds. The file name of the divided area Ar surrounded by is "36061275140051725" based on the latitude 36 degrees 06 minutes 12.75 seconds on the minor latitude end side of the divided area Ar and the longitude 140 degrees 05 minutes 17.25 seconds on the minor longitude end side. It is set to ".xxx". Markers M3, M5, M6, M7, M8, and M9 are arranged in the divided area Ar, and these markers M3, M5, M6, and M9 are arranged in the information storage file 44 having the file name "360612751400512.xxx". Marker information for M7, M8, and M9 is recorded.

Further, in FIG. 13, the latitude lines of 36 degrees 06 minutes 12.50 seconds and 36 degrees 06 minutes 13.50 seconds, and the longitude lines of 140 degrees 05 minutes 17.50 seconds and 140 degrees 05 minutes 18.50 seconds. The file name of the divided area Ar surrounded by is "36061250140051750" based on the latitude 36 degrees 06 minutes 12.50 seconds on the small latitude end side of the divided area Ar and the longitude 140 degrees 05 minutes 17.50 seconds on the small longitude end side. It is set to ".xxx". Markers M5, M6, M10, M11, and M12 are arranged in the divided area Ar, and these M5, M6, M10, M11, and M12 are included in the information storage file 44 having the file name "36061250140051750.xxx". Marker information about is recorded.

Further, in FIG. 14, the latitude lines of 36 degrees 06 minutes 13.25 seconds and 36 degrees 06 minutes 14.25 seconds and the longitude lines of 140 degrees 05 minutes 16.75 seconds and 140 degrees 05 minutes 17.75 seconds are shown. The file name of the divided area Ar surrounded by is based on the latitude 36 degrees 06 minutes 13.25 seconds on the small latitude end side of the divided area Ar and the longitude 140 degrees 05 minutes 16.75 seconds on the small longitude end side. It is set to ".xxx". Markers M1, M2, M13, and M14 are arranged in the divided area Ar, and markers for these markers M1, M2, M13, and M14 are placed in the information storage file 44 having the file name "360612535140051675.xxx". Information is recorded.

Then, as shown in FIG. 15, the information storage files 44 of all the divided areas Ar including the information storage files 44 having the above contents are stored in the HDD 22 of the server 200.

2. 2. Operation In the present embodiment, the marker information acquisition operation by the mobile information terminal 100 is performed by executing the application program 32 stored in the mobile information terminal 100 on the CPU 15, and the marker information providing operation by the server 200 is performed. , The application program 42 stored in the server 200 is executed on the CPU 21.

FIG. 16 is a flowchart illustrating a flow of a marker information providing operation by the server 200 and a marker information acquisition operation by the mobile information terminal 100. FIG. 17 is a flowchart illustrating a determination process of the information storage file 44 to be acquired by the mobile information terminal 100. The marker information acquisition process in the mobile information terminal 100 is repeated at a predetermined cycle. In steps S21, S26, S27, S28, and S29, the same processing as in steps S11, S13, S14, S15, and S16 of FIG. 11 of the first embodiment is performed, and thus the differences will be mainly described.

The CPU 15 of the mobile information terminal 100 determines the file name of the information storage file 44 to be finally acquired based on the position information acquired from the position information acquisition unit 19 in step S21. Set the file name of (reference file) (S22). For example, the acquired latitude and longitude, which are obtained by truncating the digits less than seconds, are arranged in the order of latitude and longitude, and the number with a predetermined extension is used as the file name of the information storage file 44. Set. For example, when the latitude of the current position Pn is 36 degrees 06 minutes 13 seconds 82 and the longitude is 140 degrees 05 minutes 16 seconds 14, the file name is set to "36061300140051600.xxx".

The CPU 15 of the mobile information terminal 100 obtains the latitude and longitude of the center Pc of the divided area Ar corresponding to the reference file set in step S22 (S23). The range of the divided area Ar can be obtained based on the file name. For example, when the file name is "36061300140051600.xxx", the first eight characters (8 digits) of the file name "36061300" indicate the longitude (degrees, minutes, seconds) of the southern end of the division area Ar, and the file name. The 9 characters (9 digits) "1400 15006" from the 9th character to the 17th character of the above indicate the longitude (degrees, minutes, seconds) at the western end of the division area Ar. The range of each division area Ar is a range of 1 second in latitude and longitude, respectively. Therefore, the latitude of the center Pc of the division area Ar can be calculated as 36 degrees 06 minutes 13.5 seconds, which is obtained by adding 0.5 seconds to the latitude indicated by the first 8 characters (8 digits) "36061300". The longitude of the center Pc can be calculated as 140 degrees 05 minutes 16.5 seconds, which is obtained by adding 0.5 seconds to the longitude indicated by the first 9 characters (9 digits) "1400 15006".

The CPU 15 of the mobile information terminal 100 has a distance (distance in the latitude direction and distance in the longitude direction) between the current position (the position indicated by the position information acquired in step S21) and the center position of the divided area Ar obtained in step S23. ) And the direction when the center position of the divided area Ar is viewed from the current position (S24). That is, the vector between the current position and the center position of the divided area Ar is obtained. The distance may be obtained as a length or as a latitude difference and a longitude difference.

Among the plurality of information storage files 44, the CPU 15 of the mobile information terminal 100 has a distance (distance in the latitude direction and distance in the longitude direction) between the center position and the current position of the division area Ar corresponding to the information storage file 44. The smallest information storage file 44 is determined as the file to be acquired (S25). For the file name of the information storage file 44 to be acquired, the obtained distance is divided by the interval provided with the information storage file 44 (0.25 seconds in this embodiment), and the value obtained by the division is rounded to an integer. It can be obtained by In the above example, the information storage files 44 are provided at intervals of 0.25 seconds in the latitude and longitude directions. Therefore, when the calculated distance (latitude difference) in the latitude direction is, for example, 0.32 seconds, the value of 1 is obtained by dividing 0.32 by 0.25 seconds and rounding to an integer value. Let this be the number of movements in the latitude direction. Further, when the obtained distance in the longitude direction (longitude difference) is, for example, 0.36 seconds, the value of 1 is obtained by dividing 0.36 seconds by 0.25 seconds and rounding off. Let this be the number of movements in the longitude direction. In addition, the vector to be obtained generally faces the southeast direction. In this case, the divided area Ar existing in the northwest direction with respect to the reference file, the file moved by the number of movements 1 in the latitude direction and moved by 1 in the longitude direction is used as the file to be downloaded. Then, in this case, the value obtained by multiplying the numerical value "36061300" corresponding to the latitude indicated by the file name "36061300140051600.xxx" of the reference file by 25 × the number of movements is added. As a result, the numerical value "36061325" is obtained. Further, the value obtained by multiplying the numerical value "1400 1500" corresponding to the longitude indicated by the file name "36061300140051700.xxx" of the reference file by 25 × the number of movements is subtracted. As a result, the numerical value "140051575" is obtained. Then, the extension "xxx" is added to the numerical value (character) "36061325140015775" in which the numerical value (character) "36061325" in the latitude direction and the numerical value (character) "140075675" in the longitude direction obtained in this manner are arranged in this order. The added character string "3606135251407575.xxx" is determined as the file name of the information storage file 44 to be acquired.

Based on the file name obtained in this way, the CPU 15 of the mobile information terminal 100 will be the same as in steps S13, S14, S15, and S16 of FIG. 11 of the first embodiment in steps S26, S27, S28, and S29. Perform processing.

According to the present embodiment, in the mobile information terminal 100, it is possible to acquire the information storage file 44 whose current position is near the center of the division area Ar. Therefore, it is prevented that the current location of the user is near the end in the divided area Ar corresponding to the acquired information storage file 44. Therefore, it is possible to present various information based on the marker regardless of the direction in which the user faces at the current location.

(Application Examples of Embodiment 1 and Embodiment 2)
An example of a service that can be realized by using the marker information providing system of the above embodiment will be described.

1. 1. First Application Example In the first application example, the information acquisition device of the present invention is applied to a drone, and an article is automatically delivered by the drone. The drone has a built-in information acquisition device of the present invention and a drone control unit, and the drone control unit is based on the latitude and longitude acquired by the position information acquisition unit of the information acquisition device and the image captured by the camera. It is configured to automatically fly to the destination by controlling the flight such as the operation of the rotor blades. In addition, when the control unit of the information acquisition device recognizes the mat as a marker placed at the destination based on the image captured by the camera, the drone control unit moves on the mat and mats the delivery. Place on top. If the mat is placed on a veranda, for example, delivery is possible even when the resident is absent. The drone then returns to its starting point. In that case, the information acquisition device acquires marker information from the above server. As a result, it is possible to acquire marker information of the current location and its surroundings in almost real time regardless of the direction in which the drone is flying. Therefore, it is possible to appropriately recognize the marker in the vicinity of the destination.

2. 2. Second Application Example In the second application example, the information acquisition device of the present invention is applied to a movable robot, for example, providing support such as guide dog-like walking guidance during walking of a visually impaired person and shopping. Do. The robot has the information acquisition device of the present invention and the robot control unit, and controls the operation of the robot based on the latitude, longitude, and the image captured by the camera acquired by the position information acquisition unit of the information acquisition device. It is configured to move while avoiding obstacles appropriately according to the surrounding conditions. In addition, when the camera of the information acquisition device recognizes a marker such as a mat (marker) placed at the entrance of a store or a poster or sticker attached to a wall surface, the robot control unit is associated with the marker. The marker information is acquired from the server, and the acquired content is notified to the user by reading aloud or the like. For example, if the recommended information of the store, the inventory status of goods, the availability status of the event and the reservation status are stored in the server in association with markers such as mats, posters, stickers, etc., and notified by reading aloud, etc. Even visually impaired people can recognize this information appropriately and easily. In particular, according to the present invention, since the time delay in acquiring the marker information is suppressed, it is possible to acquire the above-mentioned various information corresponding to the current location in substantially real time when the current location is present.

3. 3. Third Application Example In the third application example, the information acquisition device of the present invention is applied to a vehicle such as an automatically traveling vehicle or a segway, and the vehicle is the information acquisition device of the present invention and an automobile control unit. In addition to having the above, the vehicle travel control is performed based on the latitude and longitude acquired by the position information acquisition unit (GPS receiver) of the information acquisition device and the image captured by the camera. Based on the surrounding conditions detected by the camera and the information associated with the detected markers, the vehicle will automatically drive, and various information associated with the markers will be displayed on the display and read aloud to the occupants. provide. The marker is, for example, a traffic sign, a sticker, a poster, a mat, or the like. For example, if the sticker calls attention to children or the elderly, the contents are recorded in the server in association with the marker. As a result, when the sticker is recognized, it is downloaded from the server and the content written on the sticker is notified to the driver by reading aloud, etc., or as in the case of the robot in the second example, the mat It is possible to provide the occupants with recommended information of the store, inventory status of goods, availability status of events, reservation status information, etc. associated with markers such as posters and stickers. Further, in particular, according to the present invention, the above-mentioned various information can be acquired in almost real time when the person is in the field. Therefore, it is possible to provide appropriate services to the occupants of the vehicle.

(Embodiment 3)
In the third embodiment, instead of the target information regarding the recognition target existing around the current position in the first embodiment, the mobile information that acquires the position correspondence information associated with the position information from the server 200 via the communication line 300. The server 200 (information providing device) that provides the terminal 100 and the position correspondence information associated with the position information to the mobile information terminal 100 (information acquisition device) via the communication line 300 is provided.

The position correspondence information includes at least the guidance information described with reference to FIG. 8, but the position information and the feature amount are not essential. Other than that, it can be configured in the same manner as in the first embodiment. If the location correspondence information includes the location information, the mobile information terminal 100 displays the guidance information at the position indicated by the location information on the map based on the location information included in the acquired location correspondence information. Etc. are possible. In the present embodiment, the guidance information of the facilities and stores around the current location can be provided by the mobile information terminal 100 at the current location without causing a search load on the server 200.

(Embodiment 4)
The fourth embodiment provides an information system in which the division mode of the division area Ar in the information system of the second embodiment is applied to the information system of the third embodiment. That is, each divided area Ar is a rectangular area having a predetermined area, and is divided by shifting by a predetermined amount in the latitude direction and the longitude direction so as to overlap with at least the adjacent divided areas Ar. The CPU 15 has the position indicated by the acquired position information closest to the center position of the divided area Ar among at least one divided area Ar including the position indicated by the position information acquired by the position information acquisition unit 19. The information storage file 44 corresponding to the divided area Ar may be determined as the information storage file 44 to be acquired. As a result, similarly to the second embodiment, the information storage file 44 corresponding to the divided area Ar in which the current position (current location) of the user and the center position of the divided area Ar are closest to each other is acquired in the mobile information terminal 100. Therefore, the user can use the position correspondence information corresponding to the position around himself / herself with the current location as the center.

(Summary of Embodiments 1 to 4)
(1) In the first and second embodiments,
A mobile information terminal 100 (information acquisition device) that acquires marker information (target information) about markers (recognition targets) existing around the current position from a server 200 (information providing device) via a communication line 300 is provided. ..
The server 200 (information providing device) is provided corresponding to each of the plurality of divided areas Ar obtained by dividing the predetermined target area into a plurality of divided areas Ar, and is a marker existing in each divided area Ar. The information storage file 44 that stores the marker information (target information) about (recognition target) is stored.
The mobile information terminal 100 (information acquisition device) is
The position information acquisition unit 19 that acquires the position information indicating the current position, and
Communication unit 18 that communicates with the server 200 (information providing device) via the communication line 300,
It includes a CPU 15 (control unit).
CPU15 (control unit)
Based on the position information acquired by the position information acquisition unit 19, the file name of the information storage file 44 to be acquired is determined.
The transmission request signal of the information storage file 44 corresponding to the determined file name is transmitted to the server 200 (information providing device) via the communication unit 18.
The information storage file 44 transmitted from the server 200 (information providing device) is received via the communication unit 18 as a response to the transmission request signal.

According to the mobile information terminal 100 (information acquisition device) of the first and second embodiments, marker information (recognition target) regarding markers (recognition targets) existing around the current position is based on the position information acquired by the position information acquisition unit 19. The file name of the information storage file 44 to be acquired is determined among the plurality of information storage files 44 that store the target information). The transmission request signal of the information storage file 44 corresponding to the determined file name is transmitted to the server 200 (information providing device), and the information storage file 44 transmitted from the server 200 (information providing device) as a response to the transmission request signal It is received by the mobile information terminal 100 (information acquisition device).

Therefore, when the server 200 (information providing device) provides the marker information (target information) regarding the markers (recognition targets) existing around the current position to the mobile information terminal 100 (information acquisition device), the current position is indicated. The process of searching the database or the like based on the location information becomes unnecessary. Therefore, problems such as delay in response to the search request do not occur, and the delay in acquiring the information corresponding to the current location is suppressed in the portable information terminal 100 (information acquisition device).

(2) In the mobile information terminal 100 (information acquisition device) of the first and second embodiments.
The mobile information terminal 100 (information acquisition device) is
A camera 12 (imaging unit) that captures an image and
A display unit 11 (notification unit) capable of notifying information by an image is further provided.
The marker information (target information) includes a feature amount used for recognition processing based on an image captured by the camera 12 (imaging unit) and guidance information (notification information) to be notified when the marker (recognition target) is recognized. including.
CPU15 (control unit)
By performing recognition processing based on the feature amount on the image captured by the camera 12 (imaging unit), whether or not there is a marker (recognition target) whose features match or are similar to a certain degree or more in the image. If it is determined that the marker (recognition target) exists, the notification information corresponding to the marker (recognition target) is notified by an image via the display unit 11 (notification unit).

As a result, the guidance information (notification information) associated with the markers (recognition targets) existing around the current location can be notified to the user by an image via the display unit 11 (notification unit). In such a case, according to the information systems of the first and second embodiments, the mobile information terminal 100 (information acquisition device) displays the guidance information corresponding to the current location on the display unit 11 (notification unit) while suppressing the delay. Can be notified to the user via. The portable information terminal 100 (information acquisition device) may have a voice output unit (notification unit) such as a speaker. In this case, the voice output unit (notification unit) provides guidance information (notification information) by voice. You may notify.

(3) In embodiments 3 and 4,
A mobile information terminal 100 (information acquisition device) that acquires position correspondence information associated with position information from a server 200 (information providing device) via a communication line 300 is provided.
The server 200 (information providing device) is provided corresponding to each of a plurality of divided areas Ar obtained by dividing a predetermined target area into a plurality of divided areas Ar, and is provided with position information belonging to each divided area Ar. A plurality of information storage files 44 for storing the corresponding position correspondence information are stored.
The mobile information terminal 100 (information acquisition device) is
The position information acquisition unit 19 that acquires the position information indicating the current position, and
Communication unit 18 that communicates with the server 200 (information providing device) via the communication line 300,
It includes a CPU 15 (control unit).
CPU15 (control unit)
Based on the position information acquired by the position information acquisition unit 19, the file name of the information storage file 44 to be acquired is determined.
The transmission request signal of the information storage file 44 of the determined file name is transmitted to the server 200 (information providing device) via the communication unit 18.
The information storage file 44 transmitted from the server 200 (information providing device) is received via the communication unit 18 as a response to the transmission request signal.

According to the mobile information terminal 100 (information acquisition device) of the third and fourth embodiments, a plurality of information stores for storing the position correspondence information associated with the position information based on the position information acquired by the position information acquisition unit 19. The file name of the information storage file 44 to be acquired among the files 44 is determined. The transmission request signal of the information storage file 44 corresponding to the determined file name is transmitted to the server 200 (information providing device), and the information storage file 44 transmitted from the server 200 (information providing device) as a response to the transmission request signal It is received by the mobile information terminal 100 (information acquisition device).

Therefore, when the server 200 (information providing device) provides the position correspondence information associated with the position information to the mobile information terminal 100 (information acquisition device), the database or the like is searched based on the position information indicating the current position. No processing is required. Therefore, problems such as delay in response to the search request do not occur, and the delay in acquiring the information corresponding to the current location is suppressed in the portable information terminal 100 (information acquisition device).

(4) In the mobile information terminal 100 (information acquisition device) of the third and fourth embodiments.
The mobile information terminal 100 (information acquisition device) is
A display unit 11 (notification unit) capable of notifying information by an image is further provided.
The position correspondence information includes guidance information (notification information) to be notified according to the position indicated by the position information.
CPU15 (control unit)
The guidance information (notification information) included in the acquired position correspondence information is notified by an image via the display unit 11 (notification unit).

As a result, the guidance information (notification information) associated with the position information of the position around the current location can be notified to the user by an image via the display unit 11 (notification unit). In such a case, according to the information systems of the third and fourth embodiments, the mobile information terminal 100 (information acquisition device) displays the guidance information corresponding to the current location on the display unit 11 (notification unit) while suppressing the delay. Can be notified (presented) to the user via. The portable information terminal 100 (information acquisition device) may have a voice output unit (notification unit) such as a speaker. In this case, the voice output unit (notification unit) provides guidance information (notification information) by voice. You may notify.

(5) In the mobile information terminal 100 (information acquisition device) of the first to fourth embodiments.
The plurality of divided areas Ar are obtained by dividing a predetermined target area based on latitude and longitude.

As a result, the information storage files 44 of the plurality of divided areas Ar to be stored in the HDD 22 (storage unit) of the server 200 (information providing device) are stored, and all the target information corresponding to the predetermined target area is stored based on the latitude and longitude. It can be easily generated just by dividing it.

(6) In the mobile information terminal 100 (information acquisition device) of the second and fourth embodiments.
Each divided area Ar is a rectangular area having a predetermined area, and is divided by shifting by a predetermined amount in the latitude direction and the longitude direction so as to overlap with at least the adjacent divided areas Ar.
The CPU 15 (control unit) has the position indicated by the acquired position information most at the center position of the divided area Ar among at least one divided area Ar including the position indicated by the position information acquired by the position information acquisition unit 19. The information storage file 44 corresponding to the divided area Ar at a close position is determined as the information storage file 44 to be acquired.

As a result, when the user is using the mobile information terminal 100 (information acquisition device) while moving, the division area Ar where the current position (current location) of the user and the center position of the division area Ar are closest to each other. The information storage file 44 corresponding to is acquired by the mobile information terminal 100 (information acquisition device). Therefore, the user can use the marker information (target information) and the position correspondence information of the markers (recognition targets) existing around the current location with the current location as the center.

(7) In the mobile information terminal 100 (information acquisition device) of the first to fourth embodiments.
The file name of each information storage file 44 includes information indicating the latitude and longitude indicating the position of the division area Ar corresponding to each information storage file 44.

As a result, the file name of the information storage file 44 to be acquired at the current location can be determined by a simple calculation based on the location information of the current location.

(8) In the first and second embodiments,
An information acquisition method in which a mobile information terminal 100 (information acquisition device) acquires marker information (target information) about a marker (recognition target) existing around the current position from a server 200 (information providing device) via a communication line 300. Is provided.

(9) In embodiments 3 and 4,
An information acquisition method is provided in which a mobile information terminal 100 (information acquisition device) acquires position correspondence information associated with position information from a server 200 (information providing device) via a communication line 300.

(10) In the first to fourth embodiments,
An application program 32 (program) that causes a computer to function as a means for executing the above-mentioned information acquisition method is provided. The program in the present invention may be configured as a program having an integrated function as an OS.

Thereby, the control unit of the portable information terminal 100 (information acquisition device) can be configured by using a computer.

(11) In the first and second embodiments,
A server 200 (information providing device) that provides marker information (target information) about a marker (recognition target) existing around the current position to a mobile information terminal 100 (information acquisition device) via a communication line 300 is provided. ..
The server 200 (information providing device)
Marker information (recognition target) about a marker (recognition target) provided corresponding to each of a plurality of divided areas Ar obtained by dividing a predetermined target area into a plurality of divided areas Ar in a predetermined mode, and existing in each divided area Ar. HDD 22 (storage unit) that stores the information storage file 44 that stores the target information)
A communication unit 24 that communicates with a mobile information terminal 100 (information acquisition device) via a communication line 300.
It includes a CPU 21 (control unit).
CPU21 (control unit)
When the transmission request signal of the information storage file 44 with the specified file name is received from the mobile information terminal 100 (information acquisition device) via the communication unit 24, the information storage file 44 corresponding to the specified file name is generated. Read from HDD 22 (storage unit)
The read information storage file 44 is transmitted to the mobile information terminal 100 (information acquisition device) via the communication unit 24.

According to the server 200 (information providing device) of the first and second embodiments, the same effect as described with respect to the mobile information terminal 100 (information acquiring device) of the first and second embodiments can be obtained.

(12) In the server 200 (information providing device) of the third and fourth embodiments.
A server 200 (information providing device) that provides position correspondence information associated with position information to a mobile information terminal 100 (information acquisition device) via a communication line 300 is provided.
The server 200 (information providing device)
A plurality of division areas Ar that are provided corresponding to each of the plurality of division areas Ar obtained by dividing a predetermined target area into a plurality of division areas in a predetermined manner, and store position correspondence information corresponding to the position information belonging to each division area Ar. HDD 22 (storage unit) that stores the information storage file 44 of
A communication unit 24 that communicates with a mobile information terminal 100 (information acquisition device) via a communication line 300.
It includes a CPU 21 (control unit).
CPU21 (control unit)
When the transmission request signal of the information storage file 44 with the specified file name is received from the mobile information terminal 100 (information acquisition device) via the communication unit 24, the information storage file 44 corresponding to the specified file name is generated. Read from HDD 22 (storage unit)
The read information storage file 44 is transmitted to the mobile information terminal 100 (information acquisition device) via the communication unit 24.

According to the server 200 (information providing device) of the third and fourth embodiments, the same effect as described with respect to the mobile information terminal 100 (information acquiring device) of the third and fourth embodiments can be obtained.

(13) In the server 200 (information providing device) of the first to fourth embodiments.
The plurality of divided areas Ar are obtained by dividing a predetermined target area based on latitude and longitude.

As a result, the information storage files 44 of the plurality of divided areas Ar to be stored in the HDD 22 (storage unit) of the server 200 (information providing device) are stored, and all the target information corresponding to the predetermined target area is stored based on the latitude and longitude. It can be easily generated just by dividing it.

(14) In the server 200 (information providing device) of the second and fourth embodiments.
Each divided area Ar is a rectangular area having a predetermined area, and is divided by shifting by a predetermined amount in the latitude direction and the longitude direction so as to overlap with at least the adjacent divided areas Ar.

As a result, when the user is using the mobile information terminal 100 (information acquisition device) while moving, the division area Ar where the current position (current location) of the user and the center position of the division area Ar are closest to each other. The information storage file 44 corresponding to is acquired by the mobile information terminal 100 (information acquisition device). Therefore, the user can use the position correspondence information corresponding to the position around himself / herself with the current location as the center.

(15) In the server 200 (information providing device) of the first to fourth embodiments.
The file name of each information storage file 44 includes information indicating the latitude and longitude indicating the position of the division area Ar corresponding to each information storage file 44.

As a result, the file name of the information storage file 44 to be acquired at the current location can be determined by a simple calculation based on the location information of the current location.

(16) In the first and second embodiments,
An information providing method in which a server 200 (information providing device) provides a marker information (target information) about a marker (recognition target) existing around the current position to a mobile information terminal 100 (information acquiring device) via a communication line 300. Is provided.

(17) In embodiments 3 and 4,
An information providing method is provided in which the server 200 (information providing device) provides the position correspondence information associated with the position information to the mobile information terminal 100 (information acquisition device) via the communication line 300.

(18) In the first to fourth embodiments,
An application program 42 (program) that causes a computer to function as a means for executing the above-mentioned information providing method is provided. The program in the present invention may be configured as a program having an integrated function as an OS.

As a result, the CPU 21 (control unit) of the server 200 (information providing device) can be configured by using a computer.

(Other embodiments)
In each of the above embodiments, the case where the information acquisition device of the present invention is applied to the portable information terminal 100 has been described. However, the information acquisition device of the present invention can be applied to various devices as described in the above application examples 1 to 3. For example, the information acquisition device of the present invention may be a scouter-type tool such as a Google (registered trademark) glass, a compact digital camera, a single-lens reflex camera, a tablet computer, a notebook computer, or the like, which can be connected to the Internet.

In the above embodiment, the file name of the file corresponding to the current position is set by using a part of the latitude and longitude information. However, in the present invention, the file name does not have to include the latitude and longitude information as long as the information storage file associated with the latitude and longitude information can be read out. For example, in the information acquisition device, a unique character string consisting of a plurality of alphabets or the like is generated by a certain rule based on the latitude and longitude information, and the file name information generated by the above-mentioned certain rule on the server side. The storage file may be stored. Even in this case, on the server side, it is only necessary to read the information storage file corresponding to the file name and transmit it via the communication line 300.

Further, in the above-described embodiment, the shape of each divided area Ar is rectangular. However, in the present invention, the shape of each divided area is not limited to a rectangle. For example, the shape of each divided area may be a circle, an ellipse, a triangle, a polygon of a pentagon or more, or any other shape. Further, the shape of the divided area may be different for each divided area.

Further, in the above embodiment, the areas of the plurality of divided areas Ar are the same in all the divided areas Ar. However, in the present invention, a divided area having an area different from that of the other divided areas may exist in the plurality of divided areas. For example, in a divided area in which the marker density per predetermined area is relatively large, the area may be reduced by further subdividing the divided area, or the division area in which the marker density per predetermined area is relatively small. In the area, the area of the divided area may be increased by combining with other divided areas and the like. By changing the area of the divided area according to the marker density in this way, it is possible to reduce the variation in the number of markers included in one information storage file and reduce the variation in the data capacity per information storage file. Can be done. Therefore, it is possible to prevent the time required for downloading the information storage file from becoming extremely long depending on the divided area.

In the above embodiment, the size of the divided area Ar is 1 second in each of the longitude direction and the latitude direction. However, the size of the divided area may be other values such as 2 seconds, 3 seconds, ..., 1 minute, 2 minutes, ... In the longitude direction and the latitude direction, respectively. Further, the length in the longitude direction and the length in the latitude direction may be different.

In addition, a first information storage file group obtained by dividing a predetermined target area in the first division mode and a second information storage file obtained by dividing the predetermined target area in the second division mode. You may memorize the group. By doing so, for example, the size of the division area Ar is set to, for example, 1 second in the latitude and longitude directions in the first division mode, and for example, 1 second in the latitude and longitude directions in the second division mode, respectively. It may be a minute. The first information storage file may be applied to the user having a slow movement speed, and the second information storage file may be applied to the user having a high movement speed. In addition, which of the first and second information storage files is applied to each user is determined by detecting the moving speed and acceleration based on the change in the position indicated by the acquired position information. It may be decided based on the detected movement speed and acceleration. As a result, for example, when the user is walking, the first division mode is applied, and when the user is moving by a high-speed moving means such as a car or a train, the second division mode is applied. Can be done. When the moving speed is fast and the range of the divided area is small, the transmission request or download of the information storage file occurs frequently, and the information storage file is sent to the next divided area during the transmission request or download. It is moving and there is a risk that it will not be possible to receive an appropriate information storage file according to the current location. Therefore, when the moving speed is high, the above-mentioned situation is suppressed by acquiring the information storage file of the second aspect in which the range of the divided area is large. On the other hand, if the second division mode is applied to all users, there is a problem that the amount of communication data as a whole increases. By applying the first partition mode to a user having a slow moving speed, an increase in the amount of communication data as a whole can be suppressed. Since the change in the position information can be detected by each information communication terminal, which of the first division mode and the second division mode is applied is determined by each information acquisition device, and the determined mode. It is sufficient to specify the file in the file group corresponding to.

Further, in the above embodiment, in step S11 or S21, the position information of the current position is acquired by using the GPS receiver, but the present invention is not limited to this. For example, the location information of the current location may be acquired by using the SSID of the wireless LAN or the like. In this case, the SSID of the wireless LAN access point and the latitude / longitude information (location information) of the position where the access point is installed are stored in association with each other in the server. In addition, the information acquisition device has a wireless LAN communication function. When the information acquisition device detects the SSID in the field, it requests the server to transmit the latitude / longitude information (position information) corresponding to the SSID. The server transmits the latitude / longitude information (position information) corresponding to the SSID to the information acquisition device. The information acquisition device determines the file name of the information storage file 44 corresponding to the divided area including the current location based on the latitude / longitude information (position information) corresponding to the SSID received from the server in the same manner as in the above embodiment. .. With this configuration, the information storage file 44 can be acquired even in an environment where radio waves from GPS satellites cannot be used, such as indoors of a store or facility.

11 Display unit 12 Camera 13 Operation unit 14 Touch panel 15 CPU
16 ROM
17 RAM
18 Communication unit 19 Location information acquisition unit 21 CPU
22 HDD
23 RAM
24 Communication unit 31 OS
32 Application program 33 Data 41 OS
42 Application program 43 Data 44 Information storage file 100 Mobile information terminal 200 Server 300 Communication line Ar Divided area G Image J Guidance information M, M1 to M14 Markers

Claims (18)

An information acquisition device that acquires target information about a recognition target existing around the current position from an information providing device via a communication line.
The information providing device is provided corresponding to each of the plurality of divided areas obtained by dividing a predetermined target area into a plurality of divided areas, and target information about a recognition target existing in each divided area. Stores information storage files that store
The information acquisition device
A location information acquisition unit that acquires location information indicating the current position,
A communication unit that communicates with the information providing device via the communication line,
With a control unit
The control unit
For each of the latitude and longitude indicated by the position information acquired by the position information acquisition unit, a character string obtained by truncating the digits after the decimal point in seconds is arranged in the order of latitude and longitude, and a predetermined extension is provided to the character string obtained by arranging them. Determine the character string with the child as the file name of the information storage file to be acquired,
A transmission request signal requesting transmission of the information storage file having the determined file name is transmitted to the information providing device via the communication unit.
The information storage file transmitted from the information providing device is received via the communication unit as a response to the transmission request signal.
Information acquisition device. An imaging unit that captures images and
Further equipped with a notification unit capable of transmitting information by voice or image,
The target information includes a feature amount of the recognition target used in the recognition process based on the image captured by the imaging unit and notification information to be notified when the recognition target is recognized.
The control unit
Recognition processing of a match / similar portion having a feature amount that matches or is similar to a certain degree or more with the feature amount of the recognition target included in the target information stored in the received information storage file with respect to the image captured by the imaging unit. If a match / similar part can be recognized, the notification information corresponding to the recognition target is notified by voice or image via the notification unit.
The information acquisition device according to claim 1. It is an information acquisition device that acquires location correspondence information associated with location information from an information providing device via a communication line.
The information providing device is provided corresponding to each of a plurality of divided areas obtained by dividing a predetermined target area into a plurality of divided areas, and position corresponding information corresponding to the position information belonging to each divided area. Stores information storage files that store
The information acquisition device
A location information acquisition unit that acquires location information indicating the current position,
A communication unit that communicates with the information providing device via the communication line,
With a control unit
The control unit
For each of the latitude and longitude indicated by the position information acquired by the position information acquisition unit, a character string obtained by truncating the digits after the decimal point in seconds is arranged in the order of latitude and longitude, and a predetermined extension is provided to the character string obtained by arranging them. Determine the character string with the child as the file name of the information storage file to be acquired,
A transmission request signal requesting transmission of the information storage file having the determined file name is transmitted to the information providing device via the communication unit.
The information storage file transmitted from the information providing device is received via the communication unit as a response to the transmission request signal.
Information acquisition device. It also has a notification unit that can notify information by voice or image.
The position correspondence information includes notification information to be notified according to the position indicated by the position information.
The control unit
When the information storage file is received from the information providing device, the notification information included in the position correspondence information included in the received information storage file is notified by voice or image via the notification unit.
The information acquisition device according to claim 3. The plurality of divided areas are obtained by dividing the predetermined target area based on latitude and longitude.
The information acquisition device according to any one of claims 1 to 4. Each divided area is a rectangular area having a predetermined area, and is divided by shifting by a predetermined amount in the latitude direction and the longitude direction so as to overlap with at least the adjacent divided areas.
In the control unit, of at least one divided area including the position indicated by the position information acquired by the position information acquisition unit, the position indicated by the acquired position information is closest to the center position of the divided area. The information storage file corresponding to the divided area to be the location is determined as the information storage file to be acquired.
The information acquisition device according to claim 5. The file name of each information storage file includes information indicating the latitude and longitude indicating the position of the division area corresponding to each information storage file.
The information acquisition device according to claim 5 or 6. This is an information acquisition method in which an information acquisition device acquires target information about a recognition target existing around the current position from an information providing device via a communication line.
The information providing device is provided corresponding to each of a plurality of divided areas obtained by dividing a predetermined target area into a plurality of divided areas, and target information about a recognition target existing in each divided area. Stores information storage files that store
The information acquisition device
A location information acquisition unit that acquires location information indicating the current location,
A communication unit that communicates with the information providing device via the communication line,
With a control unit
The control unit arranges a character string obtained by the position information acquisition unit in the order of latitude and longitude, with the digits after the decimal point in seconds truncated for each of the latitude and longitude indicated by the position information, and the characters obtained by arranging them. A decision step to determine a character string with a predetermined extension as the file name of the information storage file to be acquired, and
A transmission step in which the control unit transmits a transmission request signal requesting transmission of an information storage file having a determined file name to the information providing device via the communication unit.
The control unit includes a reception step of receiving an information storage file transmitted from the information providing device as a response to the transmission request signal via the communication unit.
Information acquisition method. This is an information acquisition method in which the information acquisition device acquires the position correspondence information associated with the position information from the information providing device via the communication line.
The information providing device is provided corresponding to each of a plurality of divided areas obtained by dividing a predetermined target area into a plurality of divided areas, and position corresponding information corresponding to the position information belonging to each divided area. Stores multiple information storage files that store
The information acquisition device
A location information acquisition unit that acquires location information indicating the current position,
A communication unit that communicates with the information providing device via the communication line,
With a control unit
The control unit arranges a character string obtained by the position information acquisition unit in the order of latitude and longitude, with the digits after the decimal point in seconds truncated for each of the latitude and longitude indicated by the position information, and the characters obtained by arranging them. A decision step to determine a character string with a predetermined extension as the file name of the information storage file to be acquired, and
A transmission step in which the control unit transmits a transmission request signal requesting transmission of an information storage file having a determined file name to the information providing device via the communication unit.
A reception step of receiving an information storage file transmitted from the information providing device as a response to the transmission request signal via the communication unit is included.
Information acquisition method. A program that causes a computer to function as a means of performing each step of the information acquisition method according to claim 8. An information providing device that provides target information about a recognition target existing around the current position to an information acquisition device via a communication line.
Information storage that is provided corresponding to each of a plurality of divided areas obtained by dividing a predetermined target area into a plurality of divided areas in a predetermined manner and stores target information about a recognition target existing in each divided area. A storage unit that stores files and
A communication unit that communicates with the information acquisition device via the communication line,
With a control unit
The control unit
From the information acquisition device, character strings in which the digits after the decimal point in seconds are rounded down from the latitude and longitude indicated by the position information acquired by the position information acquisition unit of the information acquisition device are arranged in the order of latitude and longitude. When a transmission request signal requesting transmission of an information storage file having a character string having a predetermined extension added to the obtained character string as a file name is received via the communication unit, it is specified by the transmission request signal. Read the information storage file of the file name from the storage unit,
The read information storage file is transmitted to the information acquisition device via the communication unit.
Information providing device. An information providing device that provides location correspondence information associated with position information to an information acquisition device via a communication line.
A plurality of information provided corresponding to each of a plurality of divided areas obtained by dividing a predetermined target area into a plurality of divided areas in a predetermined manner, and storing position corresponding information corresponding to the position information belonging to each divided area. A storage unit that stores stored files and
A communication unit that communicates with the information acquisition device via the communication line, and
With a control unit
The control unit
From the information acquisition device, character strings in which the digits after the decimal point in seconds of the latitude and longitude indicated by the position information acquired by the position information acquisition unit of the information acquisition device are truncated are arranged in the order of latitude and longitude. When a transmission request signal requesting transmission of an information storage file having a character string having a predetermined extension added to the obtained character string as a file name is received via the communication unit, it is specified by the transmission request signal. Read the information storage file of the file name from the storage unit,
The read information storage file is transmitted to the information acquisition device via the communication unit.
Information providing device. The plurality of divided areas are areas obtained by dividing the predetermined target area based on latitude and longitude.
The information providing device according to claim 11 or 12. Each divided area is a rectangular area having a predetermined area, and is divided by shifting by a predetermined amount in the latitude direction and the longitude direction so as to overlap with at least the adjacent divided areas.
The information providing device according to claim 13. The file name of each information storage file includes information indicating the latitude and longitude indicating the position of the division area corresponding to each information storage file.
The information providing device according to claim 13 or 14. This is an information providing method in which an information providing device provides an information acquisition device with target information regarding a recognition target existing around the current position via a communication line.
The information providing device is
Information storage that is provided corresponding to each of a plurality of divided areas obtained by dividing a predetermined target area into a plurality of divided areas in a predetermined manner and stores target information about a recognition target existing in each divided area. A storage unit that stores files and
A communication unit that communicates with the information acquisition device via the communication line, and
With a control unit
The control unit converts a character string of the latitude and longitude indicated by the position information acquired by the position information acquisition unit of the information acquisition device from the information acquisition device by truncating the digit after the decimal point in seconds. When a transmission request signal requesting transmission of an information storage file having a file name of a character string obtained by arranging in order and having a predetermined extension is received via the communication unit, the transmission is performed. A read step to read the information storage file with the file name specified in the request signal from the storage unit, and
The control unit includes a transmission step of transmitting the read information storage file to the information acquisition device via the communication unit.
Information provision method. This is an information providing method in which an information providing device provides a position correspondence information associated with a position information to an information acquisition device via a communication line.
The information providing device is
A plurality of information that is provided corresponding to each of a plurality of divided areas obtained by dividing a predetermined target area into a plurality of divided areas in a predetermined manner and stores position corresponding information corresponding to the position information belonging to each divided area. A storage unit that stores stored files and
A communication unit that communicates with the information acquisition device via the communication line,
With a control unit
The control unit converts a character string of the latitude and longitude indicated by the position information acquired by the position information acquisition unit of the information acquisition device from the information acquisition device by truncating the digit after the decimal point in seconds. When a transmission request signal requesting transmission of an information storage file having a character string obtained by arranging in order and having a predetermined extension as a file name is received via the communication unit, the transmission is performed. A read step to read the information storage file with the file name specified in the request signal from the storage unit, and
The control unit includes a transmission step of transmitting the read information storage file to the information acquisition device via the communication unit.
Information provision method. A program that causes a computer to function as a means of performing each step of the information providing method according to claim 16 or 17.

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