JP5052095B2 - Document file creation method, wireless ID acquisition method, and conversion processing apparatus - Google Patents

Description

  The present invention relates to a technique for sharing wireless ID information acquired by a wireless ID management device.

  An RFID (Radio Frequency Identification) tag is information in which information that can identify a product or a work to which an RFID tag is attached is recorded in a memory, and is generally an ultra-small recording device having an antenna and a transmission / reception unit. An RFID tag generates an electromotive force actively by generating radio waves by itself, or passively generates an electromotive force by receiving radio waves for reading from an RFID reader. Transmit to the antenna of the RFID reader.

  In recent years, standardization of information stored in RFID tags has been promoted by various organizations. For example, in a standard technology of an organization called EPC Global, a basic system using RFID is assumed. The RFID tag stores a code called EPC, which is read by the RFID reader. The RFID reader can communicate with an ONS (Object Name Service) server or PML (Physical Markup Language) server on a distributed network and acquire information related to EPC by passing EPC to middleware called Savant. Has been made. The EPC has a header, an EPC manager, an object class, and a serial number. Based on these pieces of information, the EPC identifies a product or work to which an RFID storing the EPC is attached.

  As mentioned above, RFID enables identification of products and works with minimum information, and related information can be acquired from a server via a network, so it can be used in various areas such as production lines and delivery systems. Utilization is expected, and various applications of RFID have been proposed.

  For example, Patent Document 1 discloses a homepage search service that allows a user to access a homepage that reads RFID with an RFID reader and provides related product information with a simple operation. Patent Document 2 discloses a portable terminal in which information such as advertisements is provided by moving images or sounds by attaching an RFID tag to a poster or the like and reading the tag with an RFID reader. Patent Document 3 discloses a device that provides display information or audio output by attaching an RFID tag to an exhibit at an exhibition or the like, and reading it with the device.

Patent Document 4 discloses a content management system that manages a large number of contents stored in a plurality of devices and provides a user with clues or visual guides for reaching desired contents. ing.
JP 2001-350782 A JP 2002-268593 A JP 2003-347991 A JP 2006-107020 A

  However, all of the RFID applications that have been proposed in the past are mainly intended for the user to read the RFID tag of the product on the spot and provide related information. At any time in an unintended product, a device that acquires RFID information about a product that exists in the surroundings but is unaware of it, and records it for a long time, or a place where the product does not already exist in the surroundings, at any time No device or system has been proposed for performing information retrieval on a collection of RFIDs acquired in the past. Furthermore, no device or system has been proposed for sharing the RFID information collected by itself with another person or for performing information retrieval on the RFID set obtained by another person.

  The present invention has been made in view of such problems, and an object thereof is to provide a technique for sharing a plurality of wireless IDs.

  In order to solve the above-described problem, a document file creation method according to an aspect of the present invention is a data structure of a set of a plurality of wireless IDs, and each wireless ID is transmitted by wireless communication from a wireless ID tag. The read location and time are associated with wireless ID related information, which is information associated with the wireless ID, and the plurality of wireless IDs are classified based on the reading location, and the reading time is further calculated. A step of reading out a hierarchically structured wireless ID aggregate structure by being classified as a reference from a storage device, and a document file provided for each wireless ID reading location on a network related to the reading location A document file in which the address of the document is described and a reading location corresponding to the created document file A step of extracting one or more associated wireless IDs from the wireless ID aggregate structure, and one or more wireless IDs associated with the reading location in the document file provided for each reading location The document file provided with the description providing step, the description of the address on the network related to the reading location, and the description about the wireless ID corresponding to the reading location is uploaded to the server so as to be viewable via the network. Steps.

  Another aspect of the present invention is a wireless ID acquisition method. This method is a document file which is provided for each specific location and describes a network address related to the specific location, and is one or more read from the wireless ID tag by wireless communication at the specific location. Downloading a document file in which a description relating to the wireless ID is associated with the reading time of the wireless ID from a server, one or more wireless IDs read at a specific location described in the document file, and A data structure of a set of wireless IDs provided for each specific location, the step of extracting the reading time, and one or more wireless IDs extracted from a document file corresponding to the specific location are classified according to the reading time. Generating a structured wireless ID aggregate structure in the memory.

  Yet another embodiment of the present invention is a conversion processing apparatus. This apparatus is a data structure of a set of a plurality of wireless IDs, and each wireless ID includes a location and time when the wireless ID is read from a wireless ID tag by wireless communication, and information associated with the wireless ID. Wireless ID related information, and the plurality of wireless IDs are classified on the basis of the reading location, and further classified on the basis of the reading time, thereby forming a hierarchically structured wireless ID A storage unit for storing the aggregate structure, a document file provided for each wireless ID reading location, and a document file creation unit for creating a document file in which an address on the network related to the reading location is described; For the document file for each reading location, one or more wireless IDs associated with the reading location are assigned to the wireless ID set. It includes an extraction unit that extracts from the granulated material according viewable form, over a network, and the document file, extracted the provision of the description of one or more wireless ID description setting unit.

  Yet another embodiment of the present invention is also a conversion processing apparatus. This device is a document file that is provided according to a specific location and is described according to a format that can be browsed via a network, and at least one wireless that is read from the wireless ID tag by wireless communication at the specific location. An acquisition unit that acquires a document file in which a description relating to an ID is associated with the reading time of the wireless ID, one or more wireless IDs read at a specific location described in the document file, and the reading time A data structure of an extraction unit to be extracted and a wireless ID set provided for each specific location, and classifying one or more wireless IDs extracted from a document file corresponding to the specific location according to the reading time And a wireless ID set generation unit for generating a structured wireless ID set structure.

  Yet another aspect of the present invention is a data structure of a document file described in a format that can be browsed via a network. The document file has a data structure in which the document file is provided for each place where the wireless ID is read from the wireless ID tag by wireless communication, includes a network address related to the reading place, and is read at the reading place. The above wireless ID is structured by being classified based on the reading time of the wireless ID, and a description related to the wireless ID is provided in a format that can be browsed via the network.

  It should be noted that any combination of the above-described constituent elements and the expression of the present invention converted between a method, an apparatus, a system, a computer program, a data structure, a recording medium, and the like are also effective as an aspect of the present invention.

  According to the present invention, a plurality of wireless IDs can be efficiently shared.

  FIG. 1 is a configuration diagram of an RFID system according to an embodiment. The RFID management apparatus 100 automatically reads RFIDs by radio communication from RFID tags 110a to 110g that can be detected in the vicinity (generally, reference numeral 110 is used). The RFID management apparatus 100 associates the read RFID with location information acquired from a position sensor inside the RFID management apparatus 100 and time information acquired from a clock inside the RFID management apparatus 100 and records them in the built-in memory.

  RFID tags 1-5 (reference numerals 110a-110e) are read at the same location L1, among which RFID tags 1-3 are read at time T1, and RFID tags 3-5 are read at time T2. . RFID tags 6, 7 (reference numerals 110f, 110g) are read at location L2 at time T3. The RFID read from each RFID tag is recorded in the built-in memory of the RFID management apparatus 100 in association with the reading location and the reading time. Since the RFID tag 3 is read at the location L1 at two times T1 and T2, the RFID read from the RFID tag 3 is stored in association with the location L1 and the two times T1 and T2.

  The RFID management apparatus 100 can exchange information by accessing the server 140 via the network 130 by communicating with the wireless access point 120 using the wireless communication I / F. The server 140 has, for example, a database that manages information related to products associated with RFID (hereinafter referred to as “RFID-related information” or “metadata”) in association with the RFID. The server 140 may manage the address of a homepage (URL (uniform resource locator)) such as a store associated with the location information as a database. These databases may be provided in a distributed manner on a plurality of servers.

  FIG. 2 is a configuration diagram of the RFID tag 110. The RFID tag 110 includes a memory 112, a transmission / reception unit 114, and an antenna 116. The RFID is stored in the memory 112. The transmission / reception unit 114 receives a request signal from the RFID management apparatus 100 via the antenna 116 and transmits the RFID stored in the memory 112 to the RFID management apparatus 100.

  FIG. 3 is a configuration diagram of the RFID management apparatus 100. The RFID management apparatus 100 includes a processor 10, an I / O controller 12, a graphics processor 14, a memory 16, a display 18, an RFID reader 20, a communication I / F 22, a position sensor 24, an input device 26, and a clock 28.

  The graphics processor 14 has a display controller function. The communication I / F 22 is an interface for performing communication with the radio base station. The position sensor 24 is a GPS (Global Positioning System) receiver as an example. The input device 26 is an input device such as a button or a keyboard for receiving an input from the user. The clock 28 causes the processor 10 to have a clock function. Although not shown, a D / A converter or a speaker for generating sound may be provided. Further, the communication means with the outside is not limited to wireless communication, and wired communication may be used. In that case, a network interface for connecting to a wired LAN or the like is provided. In the case of a mobile phone having an RFID management apparatus function, an interface suitable for the communication standard of the mobile phone is used as a communication interface, and the mobile phone base station is configured to communicate. Furthermore, in the case of a mobile phone, instead of mounting the position sensor 24, the position may be specified by information from surrounding base stations.

  FIG. 4 is a functional configuration diagram of the RFID management apparatus 100. This figure depicts a block diagram focusing on functions, and these functional blocks can be realized in various forms by hardware only, software only, or a combination thereof. That is, at least a part of these functional configuration blocks is realized by the hardware configuration of the RFID management apparatus 100 described with reference to FIG. 3, and the functional blocks not realized by the hardware configuration execute the program loaded in the memory 16 by the processor 10. Is realized by executing.

  The RFID reading unit 30 is realized by the RFID reader 20 of FIG. 3, reads the RFID from the RFID tag 110, and records the read RFID in the RFID collective storage unit 40. The time information acquisition unit 32 is realized by the clock 28 of FIG. 3, and records information related to the date and time when the RFID reading unit 30 reads the RFID from the RFID tag 110 in the RFID collective storage unit 40. The location information acquisition unit 34 is realized by the position sensor 24 of FIG. 3, and records information on the location where the RFID reading unit 30 has read the RFID from the RFID tag 110 in the RFID collective storage unit 40. The RFID collective storage unit 40 is realized by the memory 16 of FIG. 3, and stores the RFID read by the RFID reading unit 30 in association with the reading time and the reading place.

  The communication unit 36 is realized by the communication I / F 22 of FIG. 3, is connected to the wireless access point 120, acquires RFID-related information corresponding to the RFID read by the RFID reading unit 30 from the server 140, and the RFID collective storage unit The information is stored in association with the RFID already stored in 40. Reading of RFID by the RFID reading unit 30 and acquisition of RFID related information by the communication unit 36 are performed asynchronously. The RFID reading unit 30 automatically reads RFIDs from surrounding RFID tags and accumulates them in the RFID collective storage unit 40. On the other hand, the communication unit 36 acquires RFID-related information corresponding to the RFID stored in the RFID collective storage unit 40 from the server 140 when connection to the wireless access point 120 is possible.

  The classifying unit 38 classifies the plurality of RFIDs stored in the RFID set storage unit 40 based on the reading location, and further classifies them based on the reading time, thereby hierarchically structuring the RFID set, The structured RFID aggregate structure is recorded in the RFID aggregate storage unit 40. The RFID related information is stored in the RFID aggregate structure in association with the structured RFID.

  The display control unit 50 makes it possible to view RFID-related information associated with the presented RFID by presenting the RFID stored in the RFID collective storage unit 40 on the display 18.

  The user interface unit 42 provides an interface for setting a condition for browsing the RFID stored in the RFID collective storage unit 40 to the user. As a condition for browsing the RFID, the user is allowed to specify a range of a predetermined distance or a range of time from the current location. In addition, the user interface unit 42 can provide an interface for selecting an attribute of the RFID related information.

  The search unit 44 searches the RFID aggregate structure stored in the RFID aggregate storage unit 40 for an RFID that meets the conditions specified by the user, and gives the search result to the display control unit 50. The display control unit 50 displays the search result by the search unit 44 on the display 18 of FIG.

  A virtual space can be used as a form for displaying the RFID on the display 18. The feature space setting unit 46 and the virtual space generation unit 48 are configured to display the RFID in the virtual space.

  The feature space setting unit 46 arranges one or more RFIDs to be browsed at the coordinate positions determined by the respective feature amounts in the feature space having the feature amount included in the RFID related information as a coordinate axis. The virtual space generation unit 48 arranges the RFID in the virtual space by mapping the RFID arranged in the feature space to a point in the virtual space. The virtual space may be a two-dimensional plane or a three-dimensional space. The display control unit 50 displays the virtual space in which the RFID is arranged on the display 18.

  The user interface unit 42 provides a graphical user interface function for allowing the user to search the virtual space displayed on the display 18. While searching for the virtual space, the user can browse the RFID thumbnail image arranged in the virtual space and click the thumbnail image to browse the RFID related information of the RFID. For example, if the product associated with RFID is clothing, the clothing is displayed as a thumbnail image. Clicking on the thumbnail image of the clothing you want to view allows you to click on the RFID related information, here the manufacturer, color, size, Information such as image data can be browsed.

  The virtual space generation unit 48 may extract three principal components from the feature space by multivariate analysis, and set a three-dimensional space having the three principal components as coordinate axes as a virtual space. In this case, the virtual space generation unit 48 maps each RFID to a point in the three-dimensional virtual space by obtaining the feature amounts of the three main components for the RFID related information of each RFID.

  The user preference storage unit 54 is realized by the memory 16 of FIG. 3, and stores information related to preferences of users who use the RFID management apparatus 100.

  The matching processing unit 52 performs matching between the feature amount included in the user preference information stored in the user preference storage unit 54 and the feature amount included in the RFID related information of the RFID stored in the RFID collective storage unit 40. As a result, one or more RFIDs having RFID-related information matching the user's preference are extracted from the RFID collective storage unit 40.

  When the location where the RFID extracted by the matching processing unit 52 is read is within a predetermined distance from the current location, the notification unit 56 detects that the RFID having RFID-related information that suits the user's preference is the current location. It is notified by an alarm that it is in the vicinity of. Information on the current location is acquired by the location information acquisition unit 34.

  The notification unit 56 uses the current time information acquired by the time information acquisition unit 32, and the location where the RFID extracted by the matching processing unit 52 is read is within a predetermined distance from the current location, In addition, when the time when the RFID is read is within a predetermined time range from the current time, the user is notified that the RFID having RFID-related information that suits the user's taste is in the vicinity of the current location. May be.

  When the notification unit 56 notifies the user that an RFID having RFID-related information that suits the user's preference is in the vicinity of the current location, the display control unit 50 displays the RFID-related information associated with the RFID on the display 18. May be displayed.

  When displaying the RFID related information on the display 18, the display control unit 50 may display the map information in the vicinity of the place where the RFID is read. Map information can be received from the server 140.

  The user interface unit 42 may receive a marking from the user when an item such as a product related to the RFID presented on the display 18 is a user's preference. The matching processing unit 52 extracts the feature amount included in the RFID related information associated with the marked RFID as a feature amount characterizing the user's preference, stores it in the user preference storage unit 54, and uses it for matching Can do.

  FIG. 5 is a diagram for explaining a program executed by the RFID management apparatus 100. In the present embodiment, it is assumed that the RFID management apparatus 100 has a power on / off function. Further, it is assumed that the processor 10 executes while scheduling execution units called a plurality of threads. In an embodiment, by using the processor 10 of the RFID management apparatus 100 as a processor having a plurality of processing elements called a multi-core processor, a plurality of threads can be simultaneously executed by a plurality of processing elements.

  When the power is turned on, the program On () is executed. Execute Create_Thread (Scan_Tag) to generate a thread for executing the RFID tag scan program called Scan_Tag (), and assign a number identifying the thread to a variable called TagScan to manage the thread later And be able to refer to the thread. Also, Create_Thread (Update_Tag_Info) is executed to generate another thread so that a program for updating RFID tag attribute information called Update_Tag_Info () can be executed in parallel with Scan_Tag (). In order to refer to this thread later, the identification number of the thread is substituted into a variable called TagInfoUpdate.

  On the other hand, when the power is turned off, the program Off () is executed. The thread referenced by the TagScan variable generated when the power is turned on and the thread referenced by the TagInfoUpdate variable are terminated by Destroy_Thread (TagScan) and Destroy_Thread (TagInfoUpdate).

  Now, the Scan_Tag () program is executed in the thread generated when the power is turned on. As long as the relevant thread exists, the ScanTag () program executes the Get_Tag () program, scans the surrounding RFID tags, reads the RFID, and the read RFID receives the location information acquired by the Get_Location () program. Then, the current time information acquired by the Get_Time () program is set and recorded in the memory by the Record_Tag (tagID, Loc, Time) program.

  Note that the Get_Tag () program can be implemented by returning RFID tags one by one to the TagID variable and collecting RFIDs read from all RFID tags that responded to one scan signal. There are two methods of returning as a set.

  In the present embodiment, two programs Get_Location () and Get_Time () are called. For example, in the case of GPS, the acquired data format is {<time>, <latitude>, Since time information is already included as <longitude>, <altitude>}, time obtained by GPS may be used as time information. However, since the time interval of data acquired from GPS is determined in advance by the system, if more detailed time information is required, the time generated by the processor is acquired by the Get_Time () program. Based time information is more suitable. Which time information is used can be determined according to the specification of the RFID management apparatus 100.

  Note that the location information returned by Get_Location () does not necessarily have to be the information from the GPS as it is. The accuracy of the current GPS is about 10 meters, but it is predicted that the accuracy will be 1 meter in the future. However, whether one meter accuracy is required is a system design option. For example, if you enter a store and walk around the store, it is important to know where you are in the store, and where you are in the store is not so important. It can also be considered that it is better to distinguish where. Therefore, it is desirable that the value returned by the Get_Location () program return corrected data in consideration of such design specifications. Similarly for Get_Time (), the appropriate time granularity depends on the design specification. Therefore, in general, it is desirable that the Get_Time () program returns the data after performing temporal correction. That is, the Get_Time () program may return the same time information within a predetermined period such as 10 minutes or 1 hour.

  FIG. 6 is a diagram for explaining the data structure of the RFID aggregate structure stored in the RFID aggregate storage unit 40. This figure shows an example of the data structure of the RFID set created in the memory by the Record_Tag (tagID, Loc, Time) program of FIG. An RFID aggregate structure is created and managed for each reading location. One RFID aggregate structure 150 is created for the location L1, and attribute information 152 associated with the location L1 (for example, the URL of the store website corresponding to the location L1) is stored. The update information 154 records the latest update time information from which the attribute information 152 associated with the location L1 is acquired. When the update time is a predetermined time before the current time, the attribute information 152 is updated. For example, when the information is designed to be updated on a daily basis, the information is not updated if it is within one day by comparing the update time with the current time.

  In the RFID aggregate structure 150 for each reading place, RFIDs are further classified for each reading time. RFIDs 1 to 6 read from the RFID tags 1 to 6 at the location L1 shown in FIG. 1 are classified into two structures 156a and 156b according to the reading times T1 and T2, and RFIDs 1 to 3 (reference numerals 160a to 160c). Are stored in the structures 156a and 156b as RFID set 1 (reference numeral 158a) and RFIDs 3 to 5 (reference numerals 160c to 160e) are stored as RFID set 2 (reference numeral 158b).

  That is, there are five RFIDs RFID1 to RFID5 scanned at the location L1, and among these, three of RFID1 to RFID3 are labeled at time T1 and grouped together as the same RFID set 1. Similarly, three of RFID3 to RFID5 are labeled at time T2 and are grouped as the same RFID set 2. Here, since the reading time of RFID3 is two, T1 and T2, RFID3 is stored in both RFID set 1 and RFID set 2. The RFID related information of each RFID may be stored in association with each RFID in the RFID aggregate structure 150 hierarchically structured in this way. Alternatively, the RFID related information may be separately stored in the RFID and meta information association structure described in FIG.

  FIG. 7 is a diagram for explaining a data structure of an association structure of RFID and meta information. The data structure of the association structure 170 is used for managing meta information for each RFID. An array or hash table (reference numeral 171) is provided so that the system can reference any RFID from the memory.

  When a specific RFID, for example, RFID1, is searched from the table structure of the hash table 171, the value of RFID1, its attribute information 180a, and update information 182a are written in the data structure 172 of RFID1. The attribute information 180a is RFID-related information of RFID1, and the update information 182a is a time when the RFID-related information of RFID1 is updated. The RFID1 data structure 172 has a link for managing a pair of reading times and reading locations of the RFID1 as a list. Here, the data structure 174 of the pair of the reading time T1 and the reading location L1 is linked to the data structure 172 of the RFID1.

  Similarly, the value of RFID3, its attribute information 180b, and update information 182b are written in the data structure 176 of RFID3. The RFID3 data structure 176 includes a pair of RFID3 reading time and reading location as a list, a data structure 178a of a reading time T1 and reading location L1 pair, and a data structure of a reading time T2 and reading location L1 pair. 178b is linked.

  There are various options for the data management structure, and it goes without saying that the choice can be made depending on the design specifications. In any case, a plurality of RFID sets are hierarchically structured by reading locations and reading times so that the RFID management apparatus 100 can easily manage them, so that RFID related information can be collectively managed in the RFID sets. Are recorded on the memory in various forms.

  FIG. 8 is a diagram for explaining the Update_Tag_Info () program for updating the attribute information of the RFID tag in FIG. This program always tries to connect to the server 140 via the wireless access point 120, and when the connection is successful, the program Get_Metadata_For_Tags (ch) that acquires RFID related information from the server referenced by the ch variable Then, a program Get_Metadata_For_Locations (ch) for acquiring related information regarding the reading location is executed. By executing these, the attribute information of the RFID that needs to be updated or the attribute information of the reading location described in FIGS. 6 and 7 is acquired from the server 140 and stored in the data structure.

  FIG. 9 is a diagram for explaining RFID-related information acquired by executing the Get_Metadata_For_Tags (ch) program for acquiring RFID-related information in FIG. As the attribute information 170a of the data structure 162 of the RFID1, attribute information such as the manufacturer, category, price, color, pattern, size, and image of the product identified by the RFID1 is recorded.

  As described above, as the function of the RFID management apparatus 100, the RFID collection function for automatically detecting the RFID tag existing in the vicinity and recording the RFID read from the RFID tag has been described. In addition to the function of collecting RFID, the RFID management apparatus 100 also has a function of displaying RFID information and a navigation function. The function of the RFID navigator viewer will be described with reference to FIGS.

  FIGS. 10A and 10B are diagrams illustrating a menu that allows the user to select a location where RFID information is recorded. In FIG. 10A, the RFID information recorded in the memory (ie, “local”) of the RFID management apparatus 100 is browsed, or the RFID information recorded in the server database (ie, “global”) is browsed. A menu that allows the user to select whether to do so is displayed on the screen of the RFID management apparatus 100. The user selects an option with the arrow keys 190. In FIG. 10A, “local” is selected.

  As shown in FIG. 10B, when “global” is selected, the user further selects which of the home server on the home network and the net server on the Internet to select. A menu appears on the screen. FIG. 10B shows a state where the user selects “net server” as the connection point.

  Although an example in which the navigation range is selected from the menu has been described here, the navigation range may be selected by mechanical means such as a switch outside the RFID management apparatus 100. Further, the menu on the display may be displayed on the initial screen when the RFID management apparatus 100 is activated by pressing the power button 182.

  FIGS. 11A and 11B are diagrams illustrating a menu that allows the user to select a condition for filtering an RFID that is a navigation target. As shown in FIG. 11A, a menu is displayed that allows the user to select whether to filter the RFID by “time” or “location”. When “Time” is selected, a menu for allowing the user to select one of the conditions from “Today”, “Within one week”, “Within one month”, and “All” is displayed. Here, a state in which the user selects “today” is shown. As a result, the RFID-related information to be navigated is narrowed down to the range of RFID read today.

  In FIG. 11B, when “Place” is selected, a menu for allowing the user to select any condition from “within 1 km”, “within 10 km”, and “all” is displayed. Here, a state in which the user selects “within 1 km” is shown. As a result, the RFID-related information to be navigated is narrowed down to the range of the RFID read within a radius of 1 km with the current position acquired from the position sensor 24 as the center.

  FIG. 12 is a diagram illustrating a state in which an RFID to be navigation target is filtered using RFID-related information. Here, “Apparel” from the product category, “Women's clothing” from the clothing items, “Manufacturer” from the attributes of the women's clothing, and “Company C” from the manufacturers. Items that have been narrowed down to are targeted for navigation.

  The navigation space in which the RFID that is the navigation target is arranged is generated as follows. Using the RFID aggregate structure 150 for each reading location described with reference to FIG. 6 and the RFID and meta information association structure 170 described with reference to FIG. RFID related information is extracted. A feature space is generated using the feature amount included in the extracted RFID-related information, and the RFID is arranged in the feature space. A navigation space in which the RFID is arranged is generated by converting the feature space in which the RFID is arranged into a three-dimensional space by multivariate analysis. For the generation of the navigation space by multivariate analysis, the method described in Japanese Patent Application No. 2005-357026 by the present applicant can be used.

  A method for generating a navigation space by multivariate analysis will be described. N feature quantities characterizing RFID-related information (metadata) of the RFID are extracted. For example, if the product associated with the RFID is music, information such as singer, genre, tempo, nationality, etc. is read from the metadata as a feature value, and each feature value is digitized. A plurality of digitized feature quantities are expressed as vectors to obtain a feature vector of meta information.

  For example, it is assumed that the genre and nationality included in the metadata are used as music feature quantities. The genre is either classical, jazz, or rock, and the nationality is either Asia, Europe, or the United States. A 6-bit binary vector is prepared as a music feature vector. The first bit is 1 if the genre is classical, the second bit is 1 if jazz, and the third bit is 1 if rock. The 4th bit is set to 1 if the artist's nationality is Asian, the 5th bit is set to 1 if the artist is European, and the 6th bit is set to 1 if the artist is American. Thus, for example, jazz played by an American can be represented by a feature vector of (0, 1, 0, 0, 0, 1).

  Alternatively, a number of candidate keywords may be prepared, a binary vector assigned to each keyword, and the binary vector of all keywords included in the music title may be added to determine the music feature vector.

  Based on the information of the N-dimensional feature vector of the metadata thus obtained, an N-dimensional feature space (metadata space) having each of the N-dimensional feature values of the metadata as coordinate axes is set. Metadata is arranged in the feature space at the coordinate position indicated by the N-dimensional feature vector. That is, the metadata is expressed as a point having N-dimensional coordinates in the N-dimensional feature space. In this way, by generating the feature space (metadata space) based on the RFID related information (metadata) of the RFID, the RFID can be arranged at a point in the metadata space.

  The coordinate system may be moved so that the feature amount of the user's preference information is expressed as a vector, and the point indicated by the user's preference information vector is the origin of the feature space. By using the point indicated by the user preference information vector as the origin, the RFID related information having a feature amount closer to the feature amount of the user preference information is gathered near the origin, and the feature amount away from the feature amount of the user preference information is obtained. The RFID related information that is held away from the origin.

  RFID-related information of a plurality of RFIDs is arranged in an N-dimensional feature space, and RFID-related information having similar features forms a collection like a “nebula” in the N-dimensional feature space. Since a space having a higher order than three dimensions cannot be visualized, even if RFID related information is arranged in the N-dimensional feature space, it is not easy for the user to recognize a collection of RFIDs having similar characteristics. Therefore, RFIDs arranged in the N-dimensional feature space are mapped to a three-dimensional virtual space, and a collection of RFIDs having similar features is visualized.

  When the RFIDs distributed in the N-dimensional feature space are mapped to the three-dimensional virtual space, the RFIDs that are in a close relationship in the N-dimensional feature space are mapped so as to be close to each other in the three-dimensional virtual space. That is, mapping is performed from the N-dimensional feature space to the three-dimensional virtual space so that the positional relationship and distance of the RFID are preserved as much as possible. For this, multivariate analysis is used. Multivariate analysis of the distribution of RFIDs arranged in the N-dimensional feature space, taking out three principal components and defining a three-dimensional space with each principal component as a coordinate axis, thereby making the N-dimensional feature space a three-dimensional virtual space To map. Thereby, RFID groups having similar features in the N-dimensional feature space and forming a group are arranged at positions close to each other in the three-dimensional feature space.

  In particular, in the case of a feature space whose origin is the point indicated by the feature vector of the user's preference information as described above, it is close to the user's preference by mapping the origin of the feature space to the initial position of the user's search in the virtual space An RFID having RFID-related information is mapped to a position closer to the user's initial position. Thereby, the user can search the virtual space starting from the RFID related information of interest.

  FIG. 13 is a diagram illustrating a display example of the navigation space. In this embodiment of the navigation system, multivariate analysis is performed based on the feature quantity of the RFID related information, and using the result, a thumbnail image of the RFID related information is arranged in the three-dimensional space. For the user, the RFID thumbnail image in the forefront is automatically viewed, and by pressing the center button of the arrow key 190, related meta information is displayed, although not shown. . Also, the up / down / left / right keys of the arrow keys 190 can be used to move up / down / left / right in the three-dimensional space, and the center button of the arrow keys 190 can be zoomed in.

  FIG. 14A is a diagram for explaining an option selection menu displayed for the RFID thumbnail image to be viewed on the navigation screen of FIG. When the user presses and holds the center button of the arrow key 190 on the RFID thumbnail image to be viewed in front, a menu that allows the user to select either “map display” or “favorite type” as a pop-up is displayed. Is done. When “map display” is selected in the option selection menu, as shown in FIG. 14B, a map near the place where the RFID to be browsed is read is displayed on the screen, and shop A and shop C are displayed on this map. The position of is displayed. Shops A and C are locations where RFIDs to be browsed are read, and the user can confirm on the map shops where products related to the RFID selected in the navigation space can be purchased.

  FIG. 15A is a diagram for explaining an option selection menu displayed for the RFID thumbnail image to be viewed on the navigation screen of FIG. In this figure, the user selects “favorite type” as an option and explains how “marking” is performed. At this time, the attribute of the product is extracted from the RFID related information of the RFID to be browsed as shown in FIG. 15B, and is recorded in the user preference storage unit 54 as a feature amount indicating the user's preference. In the example of FIG. 15B, attributes such as “Manufacturer” as “Company A” and <Color> as “Black” are registered as user preference information.

  In another embodiment, the user's preference for a specific attribute is statistically analyzed by analyzing attribute information of a place visited recently for a certain period (for example, one year) or stored RFID attribute information. It can also be regarded as having high nature. For example, generally, when visiting many shops with many black designs, it is assumed that the attribute “black” has preference.

  As one function, the RFID management apparatus 100 has a function of generating an alarm by sound or screen display when a product of a user's favorite type is nearby. FIG. 16 is a diagram illustrating an alarm notification screen using user preference information. If an RFID with RFID related information that matches the user's preference information is in the vicinity of the current location (i.e., the RFID was previously detected in the vicinity of the current location, or the RFID is actually in the vicinity of the current location) If it is detected now, an alarm will sound and a map showing the location of the shop will appear on the screen with the message “There are shops selling your favorite clothes nearby”.

  For example, when RFID “tag103” having RFID-related information that matches user preference information is in shops A and C, and the position of the RFID management apparatus 100 is near shop A or C (for example, within 1 km) The RFID management apparatus 100 notifies the user by an alarm sound. The notification method may be changed according to the distance between the RFID management apparatus 100 and the RFID location. For example, when an RFID tag comes close enough to be detected, a flashing light or an alarm sound informs you that there is a favorite product nearby, otherwise a map is displayed. An implementation that guides the user is more preferable.

  The function of the RFID management apparatus 100 as a navigator / viewer has been described above. As described with reference to FIG. 10A, the function of the RFID management apparatus 100 as a navigator / viewer is to connect to a home server for public use or a public server and use the RFID set in the server as a target. You can also. In order to have an RFID set in a server, a mechanism for sharing RFID information collected and recorded by the RFID management apparatus 100 with other users on the server is required. Below, the mechanism for this information sharing is demonstrated.

  FIG. 17 is a configuration diagram of a conversion processing apparatus 200 for uploading RFID data collected and recorded by the RFID management apparatus 100 to a server 140 (or home server) connected to the network. The conversion processing device 200 may be provided inside the RFID management device 100 or may be realized by a computer to which the RFID management device 100 is connected. Here, description will be made assuming that the conversion processing device 200 is mounted on the RFID management device 100.

  In order to upload RFID data, the conversion processing device 200 connects to the server 140 and requests activation of a server program for uploading RFID data on the server 140. Next, the conversion processing device 200 creates a document file that includes the RFID data collected by the RFID management device 100, the device ID of the RFID management device 100, the URL associated with the reading location of the RFID data, and the RFID-related information. To the server 140. The server program running on the server 140 stores the received document file in a storage device and enables browsing from the network.

  The configuration of the conversion processing apparatus 200 will be described. The receiving unit 60 downloads a document file from the server 140. The first extraction unit 62 extracts a set of RFIDs, a reading location and a reading time of each RFID from the received document file, and gives them to the RFID set generation unit 64. The RFID set generation unit 64 generates an RFID set structure in which the extracted RFID is structured by the reading location and the reading time, and stores the RFID set structure in the RFID set storage unit 66. The RFID set collected by the RFID management apparatus 100 is already stored in the RFID set storage unit 66, and the RFID set collected by another person is acquired from the server 140 and stored in the RFID set storage unit 66. Thereby, the RFID set collected by others can be added to the RFID set collected by the user.

  It is assumed that the RFID aggregate storage unit 66 stores RFID aggregate structures for each reading location. Within the RFID aggregate structure for each reading location, RFIDs are classified by reading time. The document file creation unit 68 creates a document file for each reading location corresponding to the RFID assembly structure for each reading location stored in the RFID set storage unit 66.

  The second extraction unit 70 extracts the RFID set classified by the reading time and the reading time as the classification reference from the RFID aggregate structure corresponding to the reading location of the document file created by the document file creation unit 68, and sets the description Part 72 is given.

  The description setting unit 72 stores the RFID set extracted by the second extraction unit 70 in the document file for each reading location generated by the document file creation unit 68 for each reading time. At this time, the RFID related information included in the RFID set is described in a format that can be browsed on the network. The transmission unit 74 uploads a document file in which a description related to RFID is provided by the description setting unit 72 to the server 140.

  A part of the configuration of the conversion processing device 200 may be provided in the server 140. The function of converting the RFID aggregate structure usable in the RFID management apparatus 100 into a document file that can be shared on the network, and conversely, the function of converting the document file into the RFID aggregate structure may be realized by the server 140.

  FIG. 18 is a diagram for explaining a state in which the RFID aggregate structure is converted into a document file by the conversion processing device 200. An XML document 210 is created as an example of a document file using an RFID aggregate structure 150 for each reading location and an RFID / meta-information association structure 170. Based on the GPS data of the reading location, the store name and URL have already been acquired as attribute information relating to the reading location, and are described in the <location> tag and the portion marked with the <URL> tag of the XML document 210. The <recording machine ID> tag describes the device ID of the RFID management apparatus 100.

  In the <recording time> tag, <RFID tag> is described for each <time> tag. In this example, <tag1> data, that is, <tag ID> tag and <meta information> tag are described as <RFID tag> in <time> tag “T1”. RFID related information is described in the <meta information> tag. These tag data are developed from the RFID aggregate structure 150 of FIG. 6 in the form of an XML document.

  By publishing the XML document 210 converted from the RFID aggregate structure 150 in this way on the network, other users can browse the RFID aggregate. When the access to the XML document 210 from other users increases, the URL of the shop A described in the XML document 210 may be ranked higher by a search using a word described in the XML document 210 as a keyword. As a result, the effect of advertising the shop A to general users can be enhanced.

  Instead of uploading the RFID data to the server 140, the RFID data may be uploaded to the home server. In this case, the same processing as described above may be performed by starting a server program on the home server from the RFID management apparatus 100. Note that the server program on the home server does not necessarily require creation / publication of an XML document. However, such work is performed so that the RFID management apparatus 100 can browse the XML document stored in the home server. Good.

  As shown in FIG. 10B in the RFID management apparatus 100, processing when the user selects a net server or a home server as a navigation range will be described. The RFID management apparatus 100 connects to a server and requests to start a server program. The server program performs filtering under the requested conditions based on the stored XML document, and converts the XML document into a RFID aggregate structure format that can be read by the RFID management apparatus 100. The server program creates a metadata space by performing multivariate analysis based on the RFID aggregate structure after conversion, and manages initial data to be displayed on the display of the RFID management apparatus 100 as RFID management. Transmit to device 100. When the RFID management apparatus 100 receives display data from the server, a display as shown in FIG. 13 is made.

  After that, as new display data is required as the user navigates the virtual space using the up / down / left / right keys of the arrow keys 190, the navigation operation information, the viewpoint information, and the like are again transmitted to the server. , Request the necessary data. In accordance with this request, the server sends the required data.

  The conversion process from the XML document to the RFID aggregate structure, and the navigation space generation process by multivariate analysis may be performed on the RFID management apparatus 100 side. The data structure of the RFID set stored on the server 140 may be an XML document or an RFID set structure that can be used by the RFID management apparatus 100. When stored as an XML document, it is desirable to convert the data format of the RFID aggregate structure to generate a metadata space. The conversion process from the XML document to the RFID aggregate structure is a process in the opposite direction to that in FIG.

  In the above example, when generating an XML document in the server 140, it is assumed that the URL information related to the reading location and the RFID related information are already acquired in the data structure acquired from the RFID management apparatus 100. Naturally, there may be a case where the URL information and the RFID attribute information regarding the reading location are not acquired. In this case, when the conversion process of FIG. 18 is performed, the server checks the data, obtains necessary information from an appropriate location, and performs a process of writing in the <URL> tag and <meta information> tag items. And

  FIG. 19 is a diagram illustrating an example in which an XML document registered in the server 140 from a plurality of RFID management apparatuses is converted into data in the RFID management apparatus format, and a metadata space is generated. The two XML documents 210a and 210b are registered by different RFID management apparatuses, and <recording machine ID> is “M387” and “M1038”. In the two XML documents 210a and 210b, the <tag ID> is the same as “tag1”, but the reading locations are shop A and shop C, the reading times are T1 and T10, and the reading locations and reading times are two. It differs between the XML documents 210a and 210b. Even such different RFID information is associated with a product having the same RFID in the metadata space. RFID sets are collected from the two XML documents 210a and 210b, and an RFID set structure 150 and an RFID / meta-information association structure 170 for each reading location are generated. Using these RFID management device format data, A data space is created.

  When “net server” is selected from the menu of FIG. 10B, a metadata space is created from RFID information registered from the RFID management apparatuses of a plurality of users and provided to the RFID management apparatus 100. On the display of the RFID management apparatus 100, the RFID thumbnail image of “tag1” is displayed as a browsing target in the navigation space as described with reference to FIG. 14A, and when map display is selected, as shown in FIG. Shop A and Shop C, where the RFID of “tag1” has been read, are displayed.

  FIG. 20 is a configuration diagram of a user grouping apparatus 300 for creating a user group based on user preference information. The user grouping device 300 is realized in a server. The RFID set storage unit 86 stores RFID sets registered by a plurality of users. Each RFID in the RFID set is associated with a reading location, a reading time, and RFID related information. The proximity evaluation unit 80 evaluates the proximity between RFID sets of a plurality of users.

  The proximity evaluation unit 80 evaluates the proximity between the reading locations of the plurality of RFIDs included in the RFID set of the first user and the reading locations of the RFIDs included in the RFID set of the second user. When there are a plurality of reading locations, the degree of proximity is obtained by comparing the distribution of the plurality of reading locations between users. The proximity evaluation unit 80 may further evaluate the proximity by comparing the distribution of reading times among users. Even if the reading places are close to each other, the first user and the second user may not be classified into the same group as long as the reading time is greatly different. For example, it is considered that the preference is different between the user who goes out during the day and the user who goes out at night in the same place.

  Further, the proximity evaluation unit 80 determines between the feature amounts of the plurality of RFID related information included in the RFID set of the first user and the feature amounts of the plurality of RFID related information included in the RFID set of the second user. You may evaluate proximity. For example, in a simple example, when two users prefer the same manufacturer, the proximity is set to 1, and when a completely different manufacturer is preferred, the proximity is set to 0. For the product color and size, the degree of proximity is evaluated by a continuous amount from 1 to 0. Alternatively, a plurality of feature quantities of the RFID related information may be expressed as vectors and the proximity may be evaluated based on the distance between the vectors.

  The user classification unit 82 groups users based on the proximity. When the proximity of any two users is smaller than a predetermined threshold, the user classifying unit 82 classifies the two people into the same group. The user classifying unit 82 adds group information to the user profile stored in the user database 88. The advertisement distribution unit 84 selects advertisements that match the user's preference from the advertisement database 90 to users belonging to the same group, and distributes them simultaneously to users belonging to the same group. In addition, as an application example for connecting users having similar preferences, chat and the like can be considered.

  As described above, according to the RFID management apparatus 100 of the embodiment, it is possible to automatically read and record an RFID tag used for specifying a product or a work. The RFID tag is automatically acquired and recorded together with the acquired time / location information, and the related information of the RFID tag is acquired when it can be connected to the server. This enables systematic management of RFID information.

  According to the conversion processing apparatus 200 of the embodiment, a large amount of RFID information automatically collected by the RFID management apparatus 100 can be converted into a structured document for sharing with others on the Internet. Further, a common structured document can be uniformly converted into a data structure that can be referred to by the RFID management apparatus 100.

  According to the RFID management apparatus 100 of the embodiment, a large amount of automatically collected RFID information is filtered according to conditions such as time and place information and systematically displayed, and the space of RFID related information is presented to the user. A navigator function for searching can be provided.

  According to the RFID management apparatus 100 of the embodiment, the user's preference is obtained by causing the user to search a space where a large amount of RFID information acquired by the RFID management apparatus 100 is arranged and marking a user's favorite product or the like. Information is extracted from RFID related information. Alternatively, user preference information is extracted by statistically analyzing RFID-related information of the RFID acquired by the user for a certain period. Thereby, when a user comes close to a place where an RFID having a highly-preferred attribute is acquired, or when the RFID is detected at the current location, the user-preferred attribute is determined. The user can be notified by an alarm sound or the like.

  According to the user grouping device 300 of the embodiment, a large amount of RFID information acquired during a certain period by the RFID management device 100 owned by a plurality of users is analyzed, and the proximity of the preference of the plurality of users is determined. Evaluate and group users based on proximity. Not only analyze the RFID information collected by individual users, but also compare the RFID information collected by multiple users and evaluate common points and differences, so that users with common preferences can be identified. It can be extracted and used for product promotion and communication between users.

  The present invention has been described based on the embodiments. The embodiments are exemplifications, and it will be understood by those skilled in the art that various modifications can be made to combinations of the respective constituent elements and processing processes, and such modifications are within the scope of the present invention. .

1 is a configuration diagram of an RFID system according to an embodiment. It is a block diagram of the RFID tag of FIG. It is a block diagram of the RFID management apparatus of FIG. It is a function block diagram of the RFID management apparatus of FIG. It is a figure explaining the program run with the RFID management apparatus of FIG. FIG. 5 is a diagram illustrating a data structure of an RFID aggregate structure stored in an RFID aggregate storage unit in FIG. 4. It is a figure explaining the data structure of the association structure of RFID and meta-information. It is a figure explaining the program which updates the attribute information of the RFID tag of FIG. It is a figure explaining the RFID relevant information acquired by executing the program which acquires the RFID relevant information of FIG. FIGS. 10A and 10B are diagrams illustrating a menu that allows the user to select a location where RFID information is recorded. FIGS. 11A and 11B are diagrams illustrating a menu that allows the user to select a condition for filtering an RFID that is a navigation target. It is a figure which shows a mode that RFID which becomes a navigation object is filtered using RFID related information. It is a figure which shows the example of a display of navigation space. FIGS. 14A and 14B are diagrams illustrating an option selection menu displayed for the RFID thumbnail image to be viewed on the navigation screen of FIG. FIGS. 15A and 15B are diagrams for explaining an option selection menu displayed for the RFID thumbnail image to be viewed on the navigation screen of FIG. It is a figure explaining the alarm notification screen using a user's preference information. It is a block diagram of the conversion processing apparatus which concerns on embodiment. It is a figure explaining a mode that an RFID aggregate structure is converted into a document file by the conversion processing apparatus of FIG. It is a figure which shows the example in which the XML document registered into the server from several RFID management apparatuses is converted into the data of a RFID management apparatus format, and a metadata space is produced | generated. It is a block diagram of the user grouping apparatus which concerns on embodiment.

Explanation of symbols

  10 processor, 12 I / O controller, 14 graphics processor, 16 memory, 18 display, 20 RFID reader, 22 communication I / F, 24 position sensor, 26 input device, 28 clock, 30 RFID reader, 32 time information acquisition Unit, 34 location information acquisition unit, 36 communication unit, 38 classification unit, 40 RFID collective storage unit, 42 user interface unit, 44 search unit, 46 feature space setting unit, 48 virtual space generation unit, 50 display control unit, 52 matching Processing unit 54 User preference storage unit 56 Notification unit 60 Reception unit 62 First extraction unit 64 RFID set generation unit 66 RFID set storage unit 68 Document file creation unit 70 Second extraction unit 72 Description setting Part 74 Unit, 80 proximity evaluation unit, 82 user classification unit, 84 advertisement distribution unit, 86 RFID collective storage unit, 88 user database, 90 advertisement database, 100 RFID management device, 110 RFID tag, 120 wireless access point, 130 network, 140 Server, 200 conversion processing device, 300 user grouping device.

Claims (8)

A document file creation method in a conversion processing device including a storage device, a document file creation unit, an extraction unit, a description setting unit, and a transmission unit,
A data structure of a set of a plurality of wireless IDs, each wireless ID including a location and time when the wireless ID is read from the wireless ID tag by wireless communication, and a wireless ID that is information associated with the wireless ID A plurality of wireless IDs are classified on the basis of the reading location and further classified on the basis of the reading time; a step of reading from the storage device,
The document file creation unit is a document file provided for each wireless ID reading location, and creates a document file describing a network address related to the reading location;
The extraction unit extracting, from the wireless ID aggregate structure, one or more wireless IDs associated with a reading location corresponding to the created document file;
The description setting unit providing a description relating to one or more wireless IDs associated with the reading location in the document file provided for each reading location;
The transmission unit uploads the document file provided with a description of an address on the network related to the reading location and a description about the wireless ID corresponding to the reading location to a server so that the document file can be viewed via the network. A document file creating method characterized by comprising: The extraction unit further includes a step of acquiring wireless ID related information that is information associated with a wireless ID,
The step of providing a description relating to the wireless ID by the description setting unit is a description of the wireless ID related information of one or more wireless IDs associated with the reading location in the document file provided for each reading location. The document file creation method according to claim 1, wherein: is provided as a description relating to the wireless ID. The time when the wireless ID is read by wireless communication is also stored in association with the wireless ID, and the description setting unit is associated with the reading location in the document file provided for each reading location. 3. The document file creation method according to claim 1, wherein descriptions relating to one or more wireless IDs are classified and provided according to reading time. A wireless ID acquisition method in a conversion processing device including a reception unit, an extraction unit, a wireless ID set generation unit, and a memory,
A document file in which the receiving unit is provided for each specific location and describes a network address related to the specific location, and is read from the wireless ID tag by wireless communication at the specific location Downloading from the server a document file in which the description relating to the wireless ID is associated with the reading time of the wireless ID;
The extraction unit extracting one or more wireless IDs read at a specific location described in the document file and the reading time;
The wireless ID set generation unit is a data structure of a wireless ID set provided for each specific location, and classifies one or more wireless IDs extracted from a document file corresponding to the specific location according to the reading time. wireless ID acquisition method characterized by comprising the steps of: generating a structured wireless ID aggregate structure in the memory by. A data structure of a set of a plurality of wireless IDs, each wireless ID including a location and time when the wireless ID is read from the wireless ID tag by wireless communication, and a wireless ID that is information associated with the wireless ID A plurality of wireless IDs are classified on the basis of the reading location and further classified on the basis of the reading time; A storage unit for storing;
A document file creation unit for creating a document file that is provided for each wireless ID reading location and that describes a network address related to the reading location;
An extraction unit that extracts, from the wireless ID aggregate structure, one or more wireless IDs associated with the reading location for the document file for each reading location;
A conversion processing apparatus, comprising: a description setting unit that provides a description relating to the extracted one or more wireless IDs in the document file according to a format that can be browsed via a network. A document file that is provided for each specific location and is described according to a format that can be browsed via a network, and includes a description of one or more wireless IDs read from the wireless ID tag by wireless communication at the specific location. An acquisition unit for acquiring a document file provided in association with the reading time of the wireless ID;
An extraction unit that extracts one or more wireless IDs read at a specific location described in the document file and the reading time;
A wireless ID set data structure provided for each specific location, structured by classifying one or more wireless IDs extracted from a document file corresponding to the specific location according to the reading time A conversion processing apparatus comprising: a wireless ID set generation unit that generates an ID set structure.   A data structure of a set of a plurality of wireless IDs, each wireless ID including a location and time when the wireless ID is read from the wireless ID tag by wireless communication, and a wireless ID that is information associated with the wireless ID A plurality of wireless IDs are classified on the basis of the reading location and further classified on the basis of the reading time; A function to read from the storage device;
  A document file creation function for creating a document file that is provided for each wireless ID reading location and that describes a network address related to the reading location;
  An extraction function for extracting from the wireless ID aggregate structure one or more wireless IDs associated with the reading location corresponding to the created document file;
  A description setting function for providing a description relating to one or more wireless IDs associated with the reading location in the document file provided for each reading location;
  A transmission function for uploading to the server the document file in which the description of the address on the network related to the reading location and the description about the wireless ID corresponding to the reading location is provided to be viewable via the network is provided to the computer. A document file creation program characterized by being realized.   A document file which is provided for each specific location and describes a network address related to the specific location, and is related to one or more wireless IDs read from the wireless ID tag by wireless communication at the specific location A receiving function for downloading a document file whose description is associated with the reading time of the wireless ID from the server;
  An extraction function for extracting one or more wireless IDs read at a specific location described in the document file and the reading time;
  A wireless ID set data structure provided for each specific location, structured by classifying one or more wireless IDs extracted from a document file corresponding to the specific location according to the reading time A wireless ID acquisition program for causing a computer to realize a wireless ID set generation function for generating an ID set structure in a memory.

Images