JPWO2020130061A1 - 2D code generation method, 2D code generation system, 2D code evaluation method, 2D code evaluation system and 2D code management system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To appropriately realize ensuring authenticity when managing an object with a two-dimensional code by using a technique related to a related two-dimensional code. SOLUTION: This is a two-dimensional code generation method for generating a plurality of related two-dimensional codes associated with each other, in which a private data code word and a pre-replacement code block are obtained, and a part of the pre-replacement code block is a private data code. Private data code replaced with a word Find the replaced code block in which the word is hidden, execute the generation process to generate the related 2D code by the replaced code block multiple times, and generate multiple related 2D codes. , Content provided based on the authentication information or authentication information that identifies the target person of the appearance of the means of transportation, the participant of the event, or the person in charge of the service when the private data code word is requested in each generation process. The private data code word includes the target information for specifying the above and the related code information for specifying the association of a plurality of related two-dimensional codes. [Selection diagram] Fig. 3

Description

The present invention relates to a two-dimensional code generation method, a two-dimensional code generation system, a two-dimensional code evaluation method, a two-dimensional code evaluation system, and a two-dimensional code management system.

Related two-dimensional codes are already well known. The related two-dimensional code is a two-dimensional code in which another related two-dimensional code associated with the related two-dimensional code exists.

As a typical example of such a related two-dimensional code, it is also called a QR code (registered trademark) having a structurally connected relationship specified in Chapter 9 of the JIS standard (also called a structurally connected QR code (registered trademark)). ), And a technique using this code has also been proposed (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2010-611468

By the way, there is a demand to ensure the authenticity of objects such as people and things. In other words, it is necessary to prove that the subject is a genuine person (or is created and managed by a genuine person) and that no unscrupulous trader or the like is intervening.

The present invention has been made in view of the above problems, and its main purpose is to ensure authenticity when managing an object with a two-dimensional code, and to obtain a technique related to a related two-dimensional code. It is to be used and realized appropriately.

The main invention is a two-dimensional code generation method for generating a plurality of related two-dimensional codes associated with each other, in which a private data code word is obtained, and a pre-replacement code having a public data code word and an error correction code word is provided. A block is obtained, and a part of the pre-replacement code block is replaced with the non-public data code word to obtain a post-replacement code block in which the non-public data code word is concealed. By executing the generation step of generating the two-dimensional code a plurality of times, each of the plurality of related two-dimensional codes is generated, and when the private data code word is obtained in each of the generation steps, the moving means The authentication information that identifies the target person of the passenger, the participant of the event, or the person in charge of the service, or the target information that identifies the content provided based on the authentication information, and the plurality of related two-dimensional codes are associated with each other. It is a two-dimensional code generation method characterized in that related code information for making it possible to identify the data is included in the private data code word.

Other features of the present invention will be clarified by the description in the present specification and the accompanying drawings.

It is explanatory drawing of the 2D code symbol. It is a block diagram of an extended encoder. It is a schematic diagram of the RS block of the related 2D code (extension related 2D code) according to this embodiment. It is a figure which showed an example of the related code information. 5A and 5B are diagrams showing other examples of related code information. It is a flowchart of a two-dimensional code symbol generation method. It is explanatory drawing of RS block of a related 2D code. It is explanatory drawing of the private data code word of the related 2D code. It is explanatory drawing when a part of RS block is replaced. It is a block diagram of an extended decoder. It is a flowchart of the related 2D code evaluation method. It is explanatory drawing of the extraction method of the private data code word of the related 2D code. It is explanatory drawing of the method of taking out the information body of a related 2D code. It is a schematic diagram which showed the appearance that various information was displayed on the display. 15A and 15B are explanatory views for explaining the first application example. 16A and 16B are schematic views showing how various information related to the first application example is displayed on the display. It is explanatory drawing for demonstrating the 2nd application example. It is a schematic diagram which showed the appearance that various information which concerns on the 2nd application example was displayed on the display. It is explanatory drawing for demonstrating the 3rd application example. It is a schematic diagram which showed the appearance that various information which concerns on 3rd application example was displayed on the display.

According to the description of this specification and the accompanying drawings, at least the following I. ~ V. Is revealed.

I. A two-dimensional code generation method for generating a plurality of related two-dimensional codes associated with each other, in which a private data code word is obtained, a pre-replacement code block having a public data code word and an error correction code word is obtained, and the above-mentioned A post-replacement code block in which the private data code word is hidden is obtained by replacing a part of the pre-replacement code block with the non-public data code word, and a related two-dimensional code is generated based on the post-replacement code block. By executing the generation step to be performed a plurality of times, each of the plurality of related two-dimensional codes is generated, and when the private data code word is obtained in each of the generation steps, the passenger of the transportation means and the event Identify the target person of either the participant or the person in charge of the service Identifies the target information that identifies the target information or the content provided based on the authentication information, and identifies that the plurality of related two-dimensional codes are associated with each other. A two-dimensional code generation method characterized in that related code information for enabling is included in the private data code word.

In such a case, it is possible to appropriately realize the assurance of authenticity when managing the object with the two-dimensional code by using the technique related to the related two-dimensional code.

Further, the related code information includes identification information indicating whether or not the two-dimensional code is a related two-dimensional code, chain number information indicating the number of chains of a plurality of related two-dimensional codes associated with each other, and the related code. The order number information indicating the number of the related two-dimensional code among the related two-dimensional codes for the number of chains and the related two-dimensional code having the related code information are It may have index information for determining whether or not it is associated with another related two-dimensional code having a different order number from the related two-dimensional code.

In such a case, the authenticity can be guaranteed even more reliably.

II. A two-dimensional code generation system that generates a plurality of related two-dimensional codes associated with each other, obtains a private data code word, obtains a pre-replacement code block having a public data code word and an error correction code word, and describes the above. A post-replacement code block in which the non-public data code word is hidden is obtained by replacing a part of the pre-replacement code block with the non-public data code word, and the related two-dimensional code is obtained based on the post-replacement code block. By executing the generation step to be generated a plurality of times, each of the plurality of related two-dimensional codes is generated, and when the private data code word is obtained in each of the generation steps, the passenger of the transportation means, the event. The target information that identifies the target person of either the participant or the person in charge of the service, or the target information that identifies the content provided based on the authentication information, and the plurality of related two-dimensional codes are associated with each other. A two-dimensional code generation system characterized in that the related two-dimensional code information for making it identifiable is included in the private data code word.

In such a case, it is possible to appropriately realize the assurance of authenticity when managing the object with the two-dimensional code by using the technique related to the related two-dimensional code.

III. A two-dimensional code evaluation method that reads a plurality of related two-dimensional codes generated by the above two-dimensional code generation method and evaluates that the plurality of related two-dimensional codes are associated with each other. The replacement code block is obtained from the code, the private data code word is extracted from the replacement code block, and either the passenger of the means of transportation, the participant of the event, or the person in charge of the service is extracted from the private data code word. The authentication information that identifies the target person or the target information that identifies the content provided based on the authentication information and the related code information extraction process for extracting the related code information are applied to each of the plurality of related two-dimensional codes that have been read. The plurality of related two-dimensional codes are associated with each other based on the extraction step to be executed and the authentication information or the target information and the related code information acquired from each of the plurality of related two-dimensional codes. A two-dimensional code evaluation method characterized by having an evaluation process for evaluating that.

In such a case, it is possible to appropriately realize the assurance of authenticity when managing the object with the two-dimensional code by using the technique related to the related two-dimensional code.

Further, in the evaluation step, the replacement code block is obtained from the related two-dimensional code, the private data code word is extracted from the replacement code block, and the related code information is based on the private data code word. Therefore, it may be evaluated that the plurality of related two-dimensional codes are associated with each other.

In such a case, it is possible to appropriately realize the assurance of authenticity when managing the target with the authentication information by using the technology related to the related two-dimensional code.

Further, the related code information includes identification information indicating whether or not the two-dimensional code is a related two-dimensional code, chain number information indicating the number of chains of a plurality of related two-dimensional codes associated with each other, and the related code. The order number information indicating the number of the related two-dimensional code among the related two-dimensional codes for the number of chains and the related two-dimensional code having the related code information are It has index information for determining whether or not it is associated with another related two-dimensional code having a different order number from the related two-dimensional code, and in the evaluation step, each of them is based on the identification information. It is confirmed that the two-dimensional code of the above is a related two-dimensional code, and based on the chain number information and the order number information obtained from each of the plurality of related two-dimensional codes, the two-dimensional codes are different from each other by the number of chains. When it is confirmed that the rank numbers are aligned and it is confirmed that the related two-dimensional codes for the number of chains having the rank numbers different from each other are associated with each other based on the index information, the plurality of said It may be evaluated that the related two-dimensional codes are related to each other.

In such a case, the authenticity can be guaranteed even more reliably.

Further, when it is evaluated that the plurality of related two-dimensional codes are related to each other, it may be possible to have a display step of displaying that the plurality of related two-dimensional codes are related to each other. Clearly informs the operator of the 2D code evaluation system that it is evaluated (confirmed) that multiple related 2D codes are associated with each other and the authenticity is guaranteed (authenticated). You may do so.

Further, it may have a display step of displaying information that can be referred to based on the authentication information when it is evaluated that the plurality of related two-dimensional codes are associated with each other. In that case, a plurality of related two-dimensional codes may be displayed. It is evaluated (confirmed) that the authentication information is related to each other, and the authenticity is guaranteed (authenticated). Etc., it may be displayed. As a result, even if it is evaluated that the plurality of related two-dimensional codes are associated with each other, the information to be provided can be separated and displayed according to the presence or absence of the authentication information.

Further, in the extraction step, the public information extraction process of extracting the public data code word from the replacement code block using the error correction code word and extracting public information from the public data code word is read. It may have a display step of displaying each of the public information when it is executed for each of the plurality of related two-dimensional codes and it is evaluated that the plurality of related two-dimensional codes are related to each other. ..

In such a case, the operator of the two-dimensional code evaluation system evaluates (confirms) that a plurality of related two-dimensional codes are associated with each other, and the authenticity of the management target by the related two-dimensional code is guaranteed. It can be known by displaying public information that it has been (authenticated), and additional information embedded in each of the multiple related 2D codes is collected by the operator of the 2D code evaluation system. It may be presented.

Further, in the retrieval step, a non-public information retrieval process for extracting non-public information from the non-public data code word is executed for each of the plurality of related two-dimensional codes read, and in the display step, the non-public information retrieval process is executed. Each of the non-public information may be displayed.

In such a case, the operator of the two-dimensional code evaluation system evaluates (confirms) that a plurality of related two-dimensional codes are associated with each other, and the authenticity of the management target by the related two-dimensional code is guaranteed. It can be known from the display of the private information that it has been (authenticated), and additional information embedded in each of the multiple related 2D codes can be given to the operator of the 2D code evaluation system, etc. Can be presented together.

Further, in the retrieval step, a non-public information retrieval process for extracting non-public information from the non-public data code word is executed for each of the plurality of related two-dimensional codes read, and in the display step, the non-public information retrieval process is executed. Each of the non-public information may be displayed.

In such a case, the operator of the two-dimensional code evaluation system evaluates (confirms) that a plurality of related two-dimensional codes are associated with each other, and the authenticity of the management target by the related two-dimensional code is guaranteed. It can be known by displaying non-public information that it has been (authenticated), and additional information embedded in each of the multiple related 2D codes is collected by the operator of the 2D code evaluation system. Can be presented.

Further, in the display step, each of the public information may be displayed in the order of the rank number, and each non-public information may be displayed in the order of the rank number.

In such a case, the public information and the non-public information can be displayed in a desired order without being affected by the reading order of the related two-dimensional code.

IV. A two-dimensional code evaluation system that reads a plurality of related two-dimensional codes generated by the two-dimensional code generation system and evaluates that the plurality of related two-dimensional codes are associated with each other. The replacement code block is obtained from the code, the private data code word is extracted from the replacement code block, and either the passenger of the means of transportation, the participant of the event, or the person in charge of the service is extracted from the private data code word. The authentication information that identifies the target person or the target information that identifies the content provided based on the authentication information and the related code information extraction process for extracting the related code information are applied to each of the plurality of related two-dimensional codes that have been read. On the other hand, based on the authentication information or the target information obtained from each of the plurality of related two-dimensional codes and the related code information, the plurality of related two-dimensional codes are associated with each other. A two-dimensional code evaluation system characterized by evaluation.

In such a case, it is possible to appropriately realize the assurance of authenticity when managing the object with the two-dimensional code by using the technique related to the related two-dimensional code.

V. A two-dimensional code management system that manages a plurality of related two-dimensional codes associated with each other, obtains a private data code word, and obtains a pre-replacement code block having a public data code word and an error correction code word. , The post-replacement code block in which the non-public data code word is concealed is obtained by replacing a part of the pre-replacement code block with the non-public data code word, and the related two dimensions are obtained based on the post-replacement code block. By executing the generation step of generating the code a plurality of times, each of the plurality of related two-dimensional codes is generated, and when the private data code word is obtained in each of the generation steps, the passenger of the transportation means. , The authentication information that identifies the target person of either the participant of the event or the person in charge of the service, or the target information that identifies the content provided based on the authentication information, and the plurality of related two-dimensional codes are associated with each other. A two-dimensional code generation system in which the relevant code information for making it possible to identify the data is included in the private data code word, and a plurality of related two-dimensional codes generated by the two-dimensional code generation system are read and described. A two-dimensional code evaluation system that evaluates that a plurality of related two-dimensional codes are associated with each other. The replacement code block is obtained from the related two-dimensional code, and the non-public data code is obtained from the replacement code block. A related code information extraction process for extracting a word and extracting the authentication information or the target information and the related code information from the private data code word is executed for each of the plurality of read related two-dimensional codes. Two-dimensional code evaluation that evaluates that the plurality of related two-dimensional codes are associated with each other based on the authentication information or the target information and the related code information acquired from each of the plurality of related two-dimensional codes. A two-dimensional code management system characterized by having a system.

In such a case, it is possible to appropriately realize the assurance of authenticity when managing the object with the two-dimensional code by using the technique related to the related two-dimensional code.

(About an example of a two-dimensional code according to an embodiment)
First, a QR code (registered trademark) as an example of the two-dimensional code used in the present embodiment will be described. Unless otherwise specified in the following explanation, the Japanese Industrial Standards JIS X 0510 2004 "Two-dimensional code symbol-QR code (registered trademark)-" (hereinafter, may be simply referred to as "JIS standard"). Follow. Further, an encoder conforming to the JIS standard is referred to as a standard encoder, and a decoder conforming to the JIS standard is referred to as a standard decoder. An encoder capable of handling a private data code word (hidden) that is not disclosed (hidden) is called an extended encoder 10 (corresponding to a two-dimensional code generation system), and a decoder is called an extended decoder 20 (corresponding to a two-dimensional code generation system). Equivalent to a two-dimensional code evaluation system). Further, an extended management system (corresponding to a two-dimensional code management system) is configured by the extended encoder 10 and the extended decoder 20.

That is, the QR code (registered trademark) used here is a two-dimensional code capable of recording public information and non-public information (such a QR code (registered trademark) may be referred to as an extended two-dimensional code). Is assumed. The public information is information that can be read by a JIS standard decoder (standard decoder). On the other hand, the non-public information is information that cannot be read by the standard decoder and can be extracted by the extended decoder 20 described later.

Further, in the following description, the "code word" is described as having an 8-bit length, but it may be 16-bit length or has another length such as 1-bit length depending on the system. You can also do it.

FIG. 1 is an explanatory diagram of the two-dimensional code symbol 1. The two-dimensional code symbol 1 (hereinafter, also simply referred to as "two-dimensional code") is available in various sizes from 1 type to 40 type, but here, the model number "2" is taken as an example. Each function will be explained in.

The two-dimensional code symbol 1 has a functional pattern and a coding area. The functional pattern is a pattern necessary for searching the two-dimensional code symbol position and identifying the characteristics necessary for assisting the decoding of the two-dimensional code in the module. The coded area is an area in which necessary information is written.

The functional pattern includes a position detection pattern FP, a separation pattern SP, a timing pattern TP, an alignment pattern AP, and a quiet zone QZ.

The position detection pattern FP is a pattern arranged at at least three corners of the two-dimensional code. By identifying the three position detection patterns FP at the time of reading, the direction and position of the two-dimensional code symbol 1 can be correctly recognized.

The chick pattern SP is a bright module having a width of one module arranged around the position detection pattern FP. As a result, the position detection pattern FP can be distinguished from the two-dimensional code symbol 1.

The module M is a unit cell constituting the two-dimensional code symbol 1. As a general rule, one bit corresponds to one module. Here, a set of a plurality of modules M, which are unit cells constituting a two-dimensional code, is referred to as a module group.

The timing pattern TP is a pattern in which dark modules and bright modules are arranged alternately one by one in a straight line. Since the number of modules of the two-dimensional code symbol 1 can be recognized by the timing pattern TP, the model number of the two-dimensional code can be identified.

The alignment pattern AP is a pattern arranged at a position determined by the model number of the two-dimensional code. The alignment pattern AP serves to assist in finding the position of the two-dimensional code symbol 1 in the case of a large module.

The quiet zone QZ is a bright module area having a width of at least 4 modules provided around the two-dimensional code.

The coding area has data, an error correction code word (hereinafter, may be simply referred to as “correction code word”), and format information FI. In addition, model number information is also added to those with a large model number. The format information FI has information on the error correction level and the standard mask pattern (mask pattern in the JIS standard).

For the data and the error correction code word, the actual data and the error correction code word for error correction when the data cannot be read are arranged. The format information has information on the error correction level applied to the two-dimensional code symbol 1 and the standard mask pattern to be used, and is a coding pattern necessary for decoding the coding area.

FIG. 2 is a block diagram of the expansion encoder 10. The expansion encoder 10 is a device that converts not only public information but also information including non-public information into a two-dimensional code symbol 1. The expansion encoder 10 includes a control unit 11, a display device 13, a printing device 14, and an input device 15.

The control unit 11 includes a calculation unit 11a and a storage unit 11b. The arithmetic unit 11a includes a central processing unit and the like, and is responsible for executing a program and performing various arithmetic operations. The storage unit 11b is responsible for storing necessary data when executing the program. In particular, the storage unit 11b stores programs for executing various processes.

The display device 13 has a display function necessary for inputting data and the like. Further, the display device 13 displays the generated two-dimensional code symbol 1 on the display. The printing device 14 also displays the generated two-dimensional code symbol 1 on a paper medium or the like by printing. Further, the input device 15 is used for inputting data and operating the expansion encoder 10.

In the present embodiment, a related two-dimensional code (hereinafter referred to as a related two-dimensional code because it is a related two-dimensional code of the QR code (registered trademark)) is used as the two-dimensional code. The related two-dimensional code is a two-dimensional code in which another related two-dimensional code associated with the related two-dimensional code exists. That is, a normal QR code (registered trademark) is independent by itself and has nothing to do with other QR codes (registered trademark), but a related two-dimensional code is associated with another related two-dimensional code. And these related two-dimensional codes are linked to each other.

A typical example of such a related two-dimensional code is a two-dimensional code having a structurally connected relationship specified in Chapter 9 of the JIS standard (also referred to as a structurally connected two-dimensional code). .. The structurally connected two-dimensional code is a code incorporated so that it can be discriminated that its own code information is a partial code that is divided in relation to each other based on a certain code information. That is, by using this, the large code can be divided into a plurality of related small codes, and the divided plurality of small codes become the related two-dimensional code.

However, the related two-dimensional code dealt with in the present specification is not such a structurally connected two-dimensional code of the JIS standard. In the following, the structurally connected two-dimensional code of the JIS standard is also referred to as a standard-related two-dimensional code, and the related two-dimensional code dealt with in this paper is also referred to as an extension-related two-dimensional code.

The details will be described later, but the differences between the standard-related two-dimensional code and the extended two-dimensional code are as follows. That is, in the standard-related two-dimensional code, there is a definition in Chapter 8.3.7 of the related code information JIS standard for making it possible to identify that a plurality of related two-dimensional codes are related to each other, and Chapter 9.1. The structural concatenation header described in is not concealed. Therefore, when the standard decoder reads the related two-dimensional code, the standard decoder causes the two-dimensional code to be associated with the two-dimensional code (structural concatenated two-dimensional code). ).

On the other hand, in the extension-related two-dimensional code, since the related code information is included in the private data code word (that is, the related code information is hidden), the related two-dimensional code is read by the standard decoder. At that time, the standard decoder cannot grasp that the two-dimensional code is a related two-dimensional code (in other words, it recognizes it as a normal QR code (registered trademark)) and a private data code word (non-public data code word). It is possible to recognize that the QR code (registered trademark) is a related two-dimensional code for the first time by reading it with the extended decoder 20 that can handle (public information).

FIG. 3 is a schematic diagram of an RS block of a related two-dimensional code (extension-related two-dimensional code) according to the present embodiment. First, with reference to FIG. 3, an outline of the data format of the extension-related two-dimensional code and a non-public data code word (a method of embedding non-public information and related code information will be described. FIG. 3 shows the error correction processing unit as an error correction processing unit. , RS (read solomon) block is shown. The two-dimensional code symbol 1 includes one or more RS blocks, and the RS block is used as one error correction processing unit.

In the embodiment described here, since the error correction method using the Reed-Solomon (RS) code is adopted, "RS block" is described as an example of the processing unit block of the error detection and correction operation. ..

The pre-replacement RS block (corresponding to the pre-replacement code block. Since the post-replacement RS block appears later, the pre-replacement RS block is distinguished from the post-replacement RS block) is the information body (public information) to be displayed. Corresponds to), and includes a public data code word having a terminal code which is a non-display part and a padding code word which is a non-display part. The authentication information may be included in both the public information and the non-public information. Further, the RS block before replacement includes an RS code as a correction code word. The information body is information that can be decoded when the two-dimensional code symbol 1 is read even by a standard decoder. The terminal code is a code representing the end of the information body. The padding code word is a temporary code word used for the purpose of filling an empty code word portion when the total number of code words in the information body is less than the capacity of the two-dimensional code symbol 1. The RS code is a code added to correct an error in units of RS block.

In the two-dimensional code, four error correction levels of "L", "M", "Q", and "H" can be selected. At the error correction level "L", the error correction capability is about 7% of the total number of words. For example, when the number of words in the RS block is 100%, it has an error correction capability of about 7%. At the error correction level "M", the correction capability is about 15% of the total number of words. At the error correction level "Q", it has a correction capability of about 25% of the total number of words. At the error correction level "H", the error correction capability is about 30% of the total number of words. In the present embodiment, for example, the non-public data code word (non-public information and related code / information) is concealed in a two-dimensional code by using "H", which is the highest class error correction capability. However, the error correction level may be changed according to the degree of risk of damage to the medium on which the code symbol is formed, or according to the number of private data code words hidden depending on the method.

The concept of the method of hiding information in a two-dimensional code is as follows. Here, "concealment" of information is different from ordinary information that can be read and acquired by a standard method (device, software, etc., a specific example is a decoder), and is different from a standard method (device, software, etc., a specific example is). , Decoder) means that it cannot be read and acquired. FIG. 3 shows a private data code word. Here, this private data code word replaces a part of the RS block. In this way, even when a part is replaced, the standard decoder can correct the replaced information body part by using the RS code. Then, the corrected information body portion can be read out and displayed. On the other hand, the private data code word is information that is corrected by the RS code and discarded, so that it is not displayed by the standard decoder.

On the other hand, in the extended decoder 20, as will be described later, the private data code word is extracted from the RS block after replacement. Then, after that, the information main body portion is read out by making a correction with the RS code. Based on the above principle, the content provided to the two-dimensional code symbol 1 based on the non-public information, the authentication information that identifies the target person of the passenger of the means of transportation, the participant of the event, or the person in charge of the service, or the content provided based on the authentication information. It is possible to hide the target information and the related code information that identify the above. The details of the method of partially replacing the RS block with the private data code word will be described later.

As described above, and as shown in FIG. 3, the related code information is included in the non-public data code word together with the non-public information. The authentication information is included as part of the private data code word in the private information area as described above. However, the private data code containing this related code information is only the first private data code word (that is, the private data code word to be replaced by the RS block before replacement at the beginning) (however, it is limited to the beginning). The related data code information according to the present embodiment includes identification information, chain number information, and chain number information, as shown in FIG. It has rank number information and index information. Note that FIG. 4 is a diagram showing an example of related code information.

Here, the authentication information is information for identifying a target person, for example, a passenger of a means of transportation, a participant of an event, or a person in charge of a service.

The target information is, for example, information for identifying the content provided based on the authentication information. The means of transportation may be, for example, an aircraft, a passenger ship, a train, a bus (shuttle service), a taxi, a bicycle, a car sharing, a ride sharing, or other moving object, or any vehicle that carries the passenger. Just do it. The passenger may be, for example, one person, a larger number of passengers, or a passenger.

The event may be, for example, a sports-related event such as baseball or soccer, a concert such as music or live performance, various games or hands-on attractions, a movie, an exhibition, a seminar or a briefing session. It suffices if one or more people gather and the event can be provided, enjoyed, shared, or experienced through a real space or a virtual space.

The service may be, for example, a long-term care service in a long-term care facility for the elderly, or other home-visit repair or repair work service, and the service may be performed by, for example, one or more persons in charge.

The authentication information may be, for example, a mileage membership number, an affiliate membership number, or other number related to a service provided by a transportation company such as an airline company. The authentication information specifies the presence or absence of a member, but does not identify an individual, and may be constructed without linking to the personal information.

In addition, the target information is text information provided based on authentication information that identifies, for example, a passenger of a means of transportation such as an aircraft, a participant of an event to be held, or a person in charge of a service to be performed. , Image, video, etc., is information for identifying and identifying a content group that can be selected from a plurality of options.

The related two-dimensional code has, for example, the authentication information that stores different contents for each passenger as authentication information, is printed on the boarding pass, and is handed to the passenger or distributed to the passenger's equipment held by the passenger. Appropriately select digital contents such as videos prepared in advance based on the related 2D code and the related 2D code of the boarding pass in the in-flight magazine, and based on the authentication information different for each passenger. It may be a related two-dimensional code that stores target information that specifically identifies a selectable content group and is printed for each article or special feature corner associated with the given content group.

The boarding pass is, for example, an example of an aircraft, but if the means of transportation is a ship such as a passenger ship, a boarding ticket, a train, a bus, a taxi, a bicycle, a car sharing, a ride share, or a boarding ticket for other moving objects, etc. , Boarding pass, ticket, etc. Further, for example, for boarding tickets, boarding tickets, tickets, etc., each ticket is issued individually when the means of transportation is used for each. Further, for example, when the means of transportation is a plurality of processes or tours, the boarding pass, boarding ticket, boarding ticket, etc. are printed and issued as a common boarding ticket. May be good. By printing and issuing each boarding pass, boarding pass, boarding pass, etc. as a common ticket, one boarding ticket can be used in common by other means of transportation, processes, and the like. As the content to be provided, for example, digital content such as a video prepared in advance may be provided based on the identification information of each transportation means, the process and tour time for each transportation means, the position information, and the like.

The guide magazines such as in-flight magazines and in-car magazines may be, for example, other booklets, leaflets, coupons, and other contents, and contents distributed or installed on board or in the car. In addition to paper media, in-flight magazines, in-car magazines, and the like may be electronic media, electronic media, or electronic two-dimensional codes.

As a result, for example, even if the same related two-dimensional code (two-dimensional code B) is read, different information can be obtained according to the authentication information of the related two-dimensional code (two-dimensional code A) of the reader (passenger). It will be possible to provide. For example, even if the related two-dimensional code is issued in the same month and printed on the same page of the in-flight magazine of the same issue, if the passenger is a member, the authentication information included in the two-dimensional code A is evaluated and added. It becomes possible to refer to high-value information. On the other hand, if the passenger is a non-member, the two-dimensional code A does not include the authentication information, so that the digital content information or the like prepared as standard may be referred to.

The printing of the related two-dimensional code on the boarding pass of the passenger may be printed by a device (for example, a printer) provided at the boarding gate at the time of boarding check of the passenger, for example. Based on the boarding pass information of the read passenger, the management server acquires the authentication information related to the content medium to be referred to, and includes the acquired authentication information in the private data code word of the related two-dimensional code as the related two-dimensional code. It may be printed (not shown).

In the case of event participants, the related two-dimensional code stores, for example, different contents for each participant as authentication information, is printed or generated on an admission ticket or ticket for an event, etc., and is handed or distributed to the participants. Related two-dimensional codes that have information and related two-dimensional codes for tickets in newsletters, leaflets, coupons, etc. are related to each other, and images and value-added information prepared in advance based on authentication information that differs for each participant With a related two-dimensional code that stores target information that identifies and identifies appropriately selectable content groups from multiple options, such as digital content, and is printed for each article or special feature section associated with those given content groups. There may be.

In addition, the newsletter is distributed at seats, venues, etc., along with other contents such as booklets, leaflets, and coupons. Further, the newsletter may be content or the like that is set in advance. The newsletter or the like may be an electronic medium or an electronic medium in addition to the paper medium, and the two-dimensional code may be electronically generated.

As a result, for example, even if the same related two-dimensional code (two-dimensional code B) is read, different information can be obtained according to the authentication information of the related two-dimensional code (two-dimensional code A) of the reader (participant). It will be possible to provide.

For example, even if the related 2D code is issued in the same month and printed on the same page of the newsletter of the same issue, if the participant is a member, the authentication information included in the 2D code A is evaluated and added. It is possible to refer to high-value information. On the other hand, if the participant is a non-member, the two-dimensional code A does not include the authentication information, so that the digital content information or the like prepared as standard may be referred to.

The printing of the related two-dimensional code on the tickets of the participants of the event may be printed by a device (for example, a printer) provided at the entrance gate at the time of the entrance check of the participants, for example. Based on the read information such as the participant's admission ticket and ticket, the management server acquires the authentication information about the content medium to be referred to, and the acquired authentication information is included in the private data code word of the related two-dimensional code, and related. It may be printed as a two-dimensional code (not shown).

In the case of the person in charge of the service, the related two-dimensional code stores, for example, different contents for each person in charge as authentication information, prints or is generated in the instruction sheet of the service, etc., and hands or distributes the authentication information to the person in charge. Multiple choices of digital contents such as work videos prepared in advance based on the related 2D code that has and the related 2D code of the ID badge in the work procedure manual, etc., and based on the authentication information that differs for each person in charge. Therefore, it may be a related two-dimensional code that stores target information that specifically identifies and identifies a content group that can be appropriately selected, and is printed for each article or dedicated work associated with the given content group.

The work procedure manual or the like may be, for example, manuals, procedure manuals, various menus, contents such as a service code, contents distributed at the time of service allocation, or contents installed in a work place. In addition to the paper medium, the work procedure manual or the like may be an electronic medium, an electronic medium, or an electronic two-dimensional code.

The identification information is information indicating whether or not the two-dimensional code is a related two-dimensional code. This identification information is common to all related two-dimensional codes (the same value is taken if it is a related two-dimensional code instead of a normal two-dimensional code), and this embodiment (example of FIG. 4). Then, the identification information is set to "01010000 (binary number)". Then, by reading this numerical value "01010000 (binary number)", the extended decoder 20 can grasp that the two-dimensional code is a related two-dimensional code (rather than a normal related two-dimensional code). It has become.

The chain number information is information indicating the number of chains of a plurality of related two-dimensional codes associated with each other. That is, the chain number information can be said to be the number of elements of a two-dimensional code group (aggregate) composed of a plurality of related two dimensions associated with each other. In the example of FIG. 4, the chain number information is "3 (decimal number)", and three related two-dimensional codes (two-dimensional code A, two-dimensional code B, two-dimensional code C) are associated with each other. Means.

The order number information is information indicating which number of the related two-dimensional codes among the related two-dimensional codes for the number of chains the related two-dimensional code including the related code information is. In the example of FIG. 4, the order number information of the two-dimensional code A is "1 (decimal number)", and therefore, the two-dimensional code A is the first related two-dimensional code out of three. Similarly, the order number information of the two-dimensional code B and the two-dimensional code C is "2 (decimal number)" and "3 (decimal number)", and therefore, the two-dimensional code B and the two-dimensional code C are three. It is the second and third related two-dimensional code.

The index information is information for determining whether or not the related two-dimensional code including the related code information is associated with another related two-dimensional code whose order number is different from that of the related two-dimensional code. In the present embodiment, a password common to a plurality of related two-dimensional codes associated with each other is used as the index information. In the example of FIG. 4, this password is AF (hexadecimal number), and therefore, the index information of each of the two-dimensional code A, the two-dimensional code B, and the two-dimensional code C is AF (hexadecimal number). Then, the extended decoder 20 reads this password "AF (hexary number)" from each of the two-dimensional code A, the two-dimensional code B, and the two-dimensional code C, and confirms that the passwords match. Whether or not the code A (two-dimensional code B, two-dimensional code C) is associated with another related two-dimensional code having a different order number from the two-dimensional code A (two-dimensional code B, two-dimensional code C) (2D code B, two-dimensional code C) (2D code B, two-dimensional code C). That is, it is possible to determine (that the two-dimensional code A, the two-dimensional code B, and the two-dimensional code C are associated with each other).

In the example of FIG. 4, the two-dimensional code A having the order number 1 and the two-dimensional code B having the order number 2 are associated with each other, and the two-dimensional code having the order number 3 is only the two-dimensional code C. However, there may be a plurality of such two-dimensional codes having a rank number of 3.

For example, as shown in FIG. 5A, there may be a two-dimensional code C'in addition to the two-dimensional code C as a two-dimensional code having a sequence number of 3. Then, the related code information of the two-dimensional code C'is the same as that of the two-dimensional code C. Since the two-dimensional code C and the two-dimensional code C'are not associated with each other, the two-dimensional code A, the two-dimensional code B, and the two-dimensional code C (or the two-dimensional code A, the two-dimensional code B, and the two-dimensional code C' ) Can be said to be a plurality of related two-dimensional codes associated with each other, but the two-dimensional code A, the two-dimensional code B, the two-dimensional code C, and the two-dimensional code C'are associated with a plurality of related two-dimensional codes associated with each other. I can't say.

The same can be said for the two-dimensional code A and the two-dimensional code B. For example, as shown in FIG. 5B, the two-dimensional code A', the two-dimensional code A'', and the two-dimensional code B'are further present. It may be a thing.

Next, a specific method for generating the related two-dimensional code will be described based on the example of FIG. 4 (that is, a method for generating the two-dimensional code A, the two-dimensional code B, and the two-dimensional code C will be given as an example. explain).

FIG. 6 is a flowchart of a two-dimensional code symbol generation method. FIG. 7 is an explanatory diagram of the RS block of the related two-dimensional code. FIG. 8 is an explanatory diagram of a private data code word of the related two-dimensional code. In the following description, unless otherwise specified, the method according to the JIS standard is adopted as the encoding method for the two-dimensional code symbol 1. In most cases, the two-dimensional code symbol 1 has a plurality of RS blocks, but here, for ease of explanation, one RS block will be illustrated and described. In addition, since the contents shown below are examples for easy explanation, the length of each code word may differ from the actual one.

Further, as a premise, the storage unit 11b has a start position to be replaced with a private data code word that can be determined by a predetermined method, and information start position information and a length related to the length (number of words) of the private data code word. It is assumed that the information is stored. Similarly, it is assumed that the information related to the start position (in the present embodiment, the beginning of the private data code word) and the length of the related code information in the private data code word is described. In addition, how to determine which part is replaced by the private data code word by how long, and which part of the private data code word is occupied by the related code information by how long. The determination is arbitrary and is not limited to the method of the present embodiment.

First, the information body and the non-public information embedded in the two-dimensional code symbol 1 related to the two-dimensional code A are taken in (S102). Here, the information body is set to "TOKYO <cr> MINATO <cr> JPN" (Fig. 7), and the non-public information is set to "123456789" (Fig. 8).

Next, the non-public data code word of the two-dimensional code symbol 1 is obtained by adding the related code information to the imported non-public information (S103). As a result, a private data code word containing non-public information and related code information is created. Although the authentication information is not shown in S103, it is assumed that the authentication information and the related code information are included in the non-public data code word when the non-public data code word is obtained in each generation process.

In the present embodiment, as shown in FIG. 8, the related code information (“50h”, “3 (decimal number)” and “1 (decimal number)” obtained by converting “01010000 (binary number)” into a hexadecimal number is input. By including the hexadecimal-converted "31h", the password "AFh") and the non-public information ("123456789") in the non-public data code word, the non-public data code word is required.

Next, the model number of the two-dimensional code symbol 1 is determined based on the captured information body (public data code word) and the private data code word (S104). The total number of code words for the two-dimensional code symbol 1 is determined according to the model number. The total number of code words is the sum of the number of data code words including the number of words in the information body (public information word) and the number of correction code words. Further, the size and number of RS blocks composed of a data code word and a correction code word are determined according to the model number of the two-dimensional code symbol 1. Then, error correction is performed in units of RS blocks.

For example, when the error correction level is "H" and the model number is "4", the total number of code words is defined as "100". And it is stipulated to include four RS blocks. The number of data code words in one RS block is "9", and the number of correction code words is "16".

The sum of the number of data code words "9" and the number of correction code words "16" is "25", and since there are four such RS blocks, the two-dimensional code symbol with the model number "4" is 25 x 4 = It will have a total number of code words of 100.

The number of error corrections at this time is "8" for each RS block. This means that it has the ability to correct "8" out of the number of data code words "9". Since there were four RS blocks, it has the total correction ability of 4 × 8 = 32 words. Since 32 out of 100 words can be corrected, it has a correction ability of 32% as a whole.

Replacement by a private data code word is performed for each RS block within a range not exceeding the number of error corrections in the RS block. In the above case, substitution of the number of code words "8" is allowed for each RS block, and replacement of the number of code words of "32" is allowed as a whole (referred to as "total number of allowable replacement words"). There is).

Based on such an operation, the number of private data code words does not exceed the total allowable number of replacement words, and the number of words in the information body (public data code words) does not exceed the number of data code words. The model number is selected.

Next, an RS block (RS block before replacement) having a public data code word and a correction code word is generated based on the code word of the information body (S106). In order to generate the RS block, the code word of the information body is divided into a plurality of blocks. Then, an error correction code word is generated for each block, and the generated correction code word is added after the corresponding code word. Then, the RS block is generated. The correction code word generation method can conform to the JIS standard.

FIG. 7 shows an example of the information body, the termination code, and the correction code word (note that the padding code word does not exist). Here, plain text information is shown as the code word of the information body. For the terminal code, for example, a bit string of "0000" can be adopted. Then, the RS code generated based on the code word including the information body is added, and the RS block is created.

A part of the RS block generated in this way is replaced with a private data code word as shown in FIG. 8 (S108). That is, the replacement RS block in which the private data code word is concealed is obtained by replacing a part of the pre-replacement RS block with the private data code word.

FIG. 9 is an explanatory diagram when a part of the RS block is replaced. FIG. 9 shows the RS block described above and the private data code word. Then, based on the start position information and the long information of the private data code word described above, as shown in FIG. 9, in the present embodiment, the beginning of the RS block is replaced with the private data code word.

In this way, if a part of the RS block is replaced with a private data code word, a part of the information body will be lost. However, since the correction can be performed in units of RS blocks, the standard decoder can correct the information body portion after replacement with the RS code, extract it appropriately, and display it.

Then, the portion replaced with the non-public data code word becomes information that is regarded as an error due to contamination of the two-dimensional code symbol 1 and is discarded, and therefore cannot be displayed by the standard decoder. On the other hand, in the extended decoder 20, as will be described later, the private data code word is extracted from the RS block after replacement. Then, after that, the information body portion is extracted by making corrections using the RS code. Then, the extracted private data code word (private information) and the information body part (public information) are displayed.

Next, the two-dimensional code symbol 1 is created based on the replacement RS block (S110). As a method for generating the two-dimensional code symbol 1 based on the RS block, the same method as the standard two-dimensional code generation method in the JIS standard can be adopted. By doing so, the two-dimensional code symbol 1 related to the two-dimensional code A can be generated.

Next, the procedure of steps S102 to S110 is repeated in order to generate another related two-dimensional code (S112). That is, in the present embodiment, following the generation of the two-dimensional code symbol 1 related to the two-dimensional code A, the two-dimensional code symbol 1 related to the two-dimensional code B and the two-dimensional code C related to the two-dimensional code C are used in the same manner. Generate code symbol 1. As described above, in the present embodiment, a plurality of related two-dimensional codes are generated by executing the generation step including the procedure of steps S102 to S110 a plurality of times.

Next, the decoding method of the two-dimensional code symbol 1 generated in this way will be described. Decoding is performed by the extended decoder 20 described above. The extended decoder 20 reads a plurality of related two-dimensional codes and evaluates (confirms) that the plurality of related two-dimensional codes are associated with each other. Then, by confirming that these related two-dimensional codes are related to each other, the management target by the related two-dimensional code (the person who owns the related two-dimensional code and the related two-dimensional code are attached. It is possible to guarantee (certify) the authenticity (validity) of (things that have been made, etc.) (details will be described later with specific examples).

FIG. 10 is a block diagram of the extended decoder 20. The extended decoder 20 reads a plurality of related two-dimensional codes, develops public information and non-public information to be displayed included in the two-dimensional code symbol 1, and further associates the plurality of related two-dimensional codes with each other. It is a device that evaluates (confirms) that it has been done. The extended decoder 20 includes a control unit 21, an image pickup device 22, a display device 23, a printing device 24, and an input device 25.

The control unit 21 includes a calculation unit 21a and a storage unit 21b. The arithmetic unit 21a includes a central processing unit and the like, and is responsible for executing a program and performing various arithmetic operations. The storage unit 21b is responsible for storing necessary data when executing the program. In particular, the storage unit 21b stores programs for executing various processes.

The image pickup device 22 is a device for taking a picture of the two-dimensional code symbol 1, and is, for example, a CCD camera or the like.

The display device 23 has a display function necessary for inputting data and the like. In addition, the display device 23 displays the information developed from the two-dimensional code on the display. The printing device 24 also displays the developed information on a paper medium or the like by printing. Further, the input device 25 is used for inputting data and operating the extended decoder 20.

While showing FIGS. 8 to 10, the related code information (“50h”, “3 (decimal number)” and “1 (decimal number)” obtained by converting “01010000 (binary number)” into a hexadecimal number was converted into a hexadecimal number. We have explained that the private data code word requires the private data code word by including "31h", password "AFh") and private information ("123456789"), but the authentication information is not disclosed. The same applies to the two-dimensional code generation method included in the data code word, and the two-dimensional code generation method may be executed by each of the above-mentioned processes.

FIG. 11 is a flowchart of the related two-dimensional code evaluation method. In the following description, unless otherwise specified, the method according to the JIS standard is adopted as the decoding method for the two-dimensional code symbol 1.

Further, as a premise, the storage unit 21b of the extended decoder 20 contains information related to the start position to be replaced with the private data code word and the length (number of words) of the private data code word which can be determined by a predetermined method (the number of words). It is assumed that the start position information and the length information) are stored. Similarly, it is assumed that the information related to the start position (the beginning of the private data code word) and the length of the related code information in the public data code word is described. In addition, how to determine which part is replaced by the private data code word by how long, and which part of the private data code word is occupied by the related code information by how long. The determination is arbitrary and is not limited to the method of the present embodiment.

First, the two-dimensional code symbol 1 is read (S202). Here, it is assumed that the two-dimensional code symbol 1 related to the two-dimensional code A is first read. Then, a plurality of RS blocks are expanded based on the read two-dimensional code symbol 1 (S204). For the deployment to these a plurality of RS blocks, those conforming to the JIS standard can be adopted. As a result, for example, the replacement RS block shown in FIG. 9 described above is acquired. That is, the code block after replacement is obtained from the related two-dimensional code.

Next, the code word (public data code word) and the private data code word of the information body are extracted from the acquired RS block after replacement by a predetermined method (S206).

FIG. 12 is an explanatory diagram of a method of extracting a private data code word of a related two-dimensional code. FIG. 12 shows the replaced RS block and the private data code word.

The replaced RS block can be obtained by reading the two-dimensional code symbol 1 and expanding it according to the JIS standard as described above. In the present embodiment, the extended decoder 20 determines the position of the private data code word in the replaced RS block based on the start position information and the length information of the private data code word recorded in the storage unit 21b. To identify. Then, the private data code word is extracted from the specified position.

FIG. 13 is an explanatory diagram of a method of extracting the information body of the related two-dimensional code. The extended decoder 20 acquires the RS block before replacement by performing error correction of the RS block after replacement. Then, the information from the beginning to the end code of the RS block before replacement is extracted, and the extracted data is used as the information body. That is, after the replacement, the public data code word is extracted from the RS block using the correction code word, and the information body which is the public information is extracted from the public data code word.

Next, the extended decoder 20 extracts the private information and the related code information from the private data code word. That is, the extended decoder 20 identifies the position of the related code information in the private data code word based on the start position information and the length information of the related code information stored in the storage unit 21b. Then, the related code information is extracted from the specified position, and the remaining information of the non-public data code word is set as non-public information.

The extended decoder 20 grasps (confirms) the related code information (that is, the identification information, the chain number information, the order number information, and the index information) (step S210). That is, while grasping (confirming) that this two-dimensional code is a related two-dimensional code from the identification information, in the present embodiment, the related two-dimensional code is three related two-dimensional codes from the other three pieces of information. It is the first related two-dimensional code of the above, and it is grasped (confirmed) that the password is AF (hexagonal number).

In the present embodiment, the above-mentioned related code information retrieval process is executed for each of the plurality of read related two-dimensional codes, and the related code information obtained from each of the plurality of related two-dimensional codes is obtained. Based on this, it is evaluated that a plurality of related two-dimensional codes are related to each other. More specifically, based on the identification information, it is confirmed that each two-dimensional code is a related two-dimensional code, and the chain number information and the rank number information obtained from each of the plurality of related two-dimensional codes are added. Based on this, it is confirmed that different rank numbers for the number of chains are aligned, and based on the index information, the related two-dimensional codes for the number of chains having different rank numbers are associated (here, the number of chains). When the evaluation conditions are met when it is confirmed that the index information (password) of the related two-dimensional code of the minute matches), it is evaluated that multiple related two-dimensional codes are associated with each other. ..

Here, since only one related two-dimensional code has been read, the evaluation process has not yet been executed. Then, no display is performed by the display device 23.

Next, when the two-dimensional code B is read, the same procedure as in steps S202 to S210 (steps S212 to S220) is executed, and public information, non-public information, and related two-dimensional code information are extracted (step S218). ..

The extended decoder 20 first grasps (confirms) related code information (that is, identification information, chain number information, sequence number information, and index information), and is based on authentication information (for example, a character string or the like) extracted thereafter. For example, various information recorded (registered) in association with the authentication information is grasped (confirmed) in advance on a management server (not shown) or the like (step S220). That is, while grasping (confirming) that the two-dimensional code is the related two-dimensional code from the identification information, in the present embodiment, the related two-dimensional code is the three related two-dimensional codes from the other three pieces of information. It is the second related two-dimensional code of the above, and it grasps (confirms) that the password is AF (hexagonal number), and also grasps whether the read authentication information is recorded (as for the read authentication information). Check.

Then, the above-mentioned evaluation process is carried out by comparing the related code information with the related code information of the two-dimensional code A, and the authentication information is the read authentication information and the recorded authentication information. Is carried out (step S221).

Here, for example, in the case of a related code, a plurality of related twos are not satisfied because the rank numbers different from each other for the number of chains are not aligned (that is, only one or two of the three) are satisfied. It is not evaluated that the two-dimensional codes are associated with each other. Then, in such a combination, no display is performed by the display device 23.

Further, for example, in the case of authentication information, the authentication information and the authentication information about the extended decoder 20 that has read the authentication information may be acquired together and evaluated together on the management server. As a result, even if the authentication information printed on one's boarding pass, ticket, ID badge, etc. is read by another person's extended decoder 20, various information recorded in advance on the management server (identification information related to the extended decoder 20, etc.) ), The target person of any of the regular passengers, the participants of the event, and the person in charge of the service will not be evaluated as the extended decoder 20.

Further, when the two-dimensional code C is read, the same procedure as in steps S202 to S210 (steps S222 to S230) is executed from step S202, and public information, non-public information, and related two-dimensional code information are extracted (step S228).

The extended decoder 20 grasps (confirms) the related code information (that is, the identification information, the chain number information, the order number information, and the index information) (step S230). That is, while grasping (confirming) that this two-dimensional code is a related two-dimensional code from the identification information, in the present embodiment, the related two-dimensional code is three related two-dimensional codes from the other three pieces of information. It is the third related two-dimensional code of the above, and it is grasped (confirmed) that the password is AF (hexagonal number).

Then, the above-mentioned evaluation step is carried out by comparing the related code information with the related code information of the two-dimensional code A and the two-dimensional code B (step S231). Here, it is confirmed that each two-dimensional code is a related two-dimensional code, and it is confirmed that different rank numbers for the number of chains are aligned (that is, one, two, and three of the three are aligned. ), It is confirmed that the related two-dimensional codes for the number of chains having different rank numbers are associated (the index information (password) of the related two-dimensional codes for the number of chains matches in AF), and the above Since the evaluation conditions are satisfied, it is evaluated that a plurality of related two-dimensional codes (two-dimensional code A to two-dimensional code C) are associated with each other.

The extended decoder 20 also grasps (confirms) the authentication information. That is, from the read authentication information, it is grasped (confirmed) that the authentication information is recorded (registered) in the management server in advance. In the present embodiment, the related two-dimensional code is the third related two-dimensional code among the three related two-dimensional codes from the plurality of authentication information and the other three pieces of information, and the password is AF (hexary number). ) To understand (confirm).

Then, in the present embodiment, when the extended decoder 20 makes such an evaluation, the display device 23 indicates that a plurality of related two-dimensional codes are associated with each other (for example, the characters "authenticated"). It is displayed (step S232). In addition, instead of the display or in addition to the display, such a notification may be notified by voice.

Further, at this time, the display device 23 also displays the public information and the non-public information of the two-dimensional code A to the two-dimensional code C taken out in step S208, step S218, and step S228 (step S232). In the present embodiment, as shown in FIG. 14, each public information is displayed in the order of the order number instead of the reading order of the related two-dimensional code, and similarly, each non-public information is also displayed. It may be displayed in the order of the order numbers. Further, the public information group and the private information group may be displayed as one group, and the public information group may be displayed followed by the private information group. Note that FIG. 14 is a schematic view showing how various information is displayed on the display.

(About specific application examples)
An application example of the above-mentioned related two-dimensional code will be described with some examples.
<First application example>
First, the first application example will be described with reference to FIGS. 15 and 16. 15A and 15B are explanatory views for explaining the first application example. 16A and 16B are schematic views showing how various information related to the first application example is displayed on the display.

In the first application example, the passenger of the means of transportation will be described as an example, but the same applies to the participants of the event and the person in charge of the service. The passenger owns, for example, a handy terminal (such as a smartphone equipped with the target application) as the extended decoder 20, and the handy terminal is combined with the two-dimensional code A (for example, printed on the boarding pass). When held over the dimension code B (for example, printed in an in-flight magazine that can be referred to on the plane) sequentially or simultaneously, the above-mentioned steps are executed on the handy terminal, and the two-dimensional code A and the two-dimensional code B of the boarding pass are mutually transferred. The evaluation that it is associated is made based on the authentication information. Then, when the evaluation is made, the words "Authenticated" are displayed as shown in Fig. 16A, "There are 5 special offers to Mr. Yamada.", "1. XX Trading, 2 It is certified that ".YY Logistics, 3.ZZ Technology" is definitely for "Taro Yamada".

This makes it possible to confirm the target information based on the authentication information. In addition, as shown in FIG. 15A, public information and non-public information are displayed on the display, and information suitable for the passenger (member) can be visually confirmed on the display.

In the first application example, as shown in FIG. 15A, a related two-dimensional code having two chains is used. The public information of the two-dimensional code A is, for example, information printed on a boarding pass as information related to boarding.

The information printed on the boarding pass includes, for example, passenger name, boarding date, departure, arrival, flight name, seat, etc. (for example, "Taro Yamada, YYYYMMDD, departure XX, destination YY, flight name ABC10, seat 12A". , ... "), and each of these information is embedded in the two-dimensional code A.

Further, as non-public information, authentication information (for example, "member identification ID, target information ID-1, ...") is embedded in the two-dimensional code A. The public information of the two-dimensional code A may be protected so that it cannot be read by a standard decoder.

In addition, the public information of the two-dimensional code A'of other passengers is also the information printed on the boarding pass as information on boarding, for example, the passenger name, the date of boarding, departure, arrival, and flight. Names, seats, etc. (for example, "Hanako Suzuki, YYYYMMDD, departure XX, destination YY, flight name ABC10, seat 22A, ..."), and each of these information is embedded in the two-dimensional code A'.

Further, as non-public information, authentication information (for example, "member identification ID, target information ID-2, ...") is embedded in the two-dimensional code A'. As described above, the public information of the two-dimensional code A'may be protected so that it cannot be read by a standard decoder.

The two-dimensional code B is a related two-dimensional code that is printed in advance in the in-flight magazine. As for the public information of the two-dimensional code B, for example, information such as a URL for acquiring an application and public information is embedded in the two-dimensional code B. In addition, as non-public information, various information and authentication information for identifying each page of the in-flight magazine (for example, "publication month ID-A, article ID-A, target information ID-A, ...") Embed in 2D code B.

The public information of the two-dimensional code B may be read by anyone, for example, with a standard decoder. The private information is protected so that it cannot be read even by the extended decoder 20 unless the user is authorized, or it is protected so that it cannot be read unless a special password or the like is notified. It is also possible to apply.

In addition, since public information can be referred to by anyone, users who have not prepared the application of this system can download and install the application of the extended decoder 20 in the extended decoder 20 in advance to obtain the related two-dimensional code. Can be read.

As for the two-dimensional code B, the two-dimensional code B printed in the in-flight magazine confirms (authenticates) the association with the two-dimensional code A group of a plurality of boarding passes, and the authentication information in the two-dimensional code A group. Based on, for example, an appropriate digital content (text information, image, video, etc.) may be selected from the options specified by the group of the two-dimensional code B.

Here, the group of the two-dimensional code A and the group of the two-dimensional code B have, for example, the same value for each element of the related code information (“chain number information”, “order number information”, “index information”). Refers to each collection of related two-dimensional codes with. In the selection of digital contents, for example, a person in charge on the operator side of a service or a system appropriately (in advance) appropriately selects a content group (group) to be presented.

Further, the content group may be set according to information such as the number of boarding times and boarding history, in addition to the attributes related to the passenger and the information related to boarding. As a result, the passenger can appropriately select the content from the content group according to his / her taste, taste, and purpose, for example.

As shown in FIG. 15B, various target information provided according to the evaluation results of the two-dimensional code A and the two-dimensional code B is associated with, for example, private authentication information and connected to the management server of this system. It may be stored in a database or the like (not shown).

The two-dimensional code A may be printed on the boarding pass of the passenger, for example. Further, the two-dimensional code B is printed, for example, in an in-flight magazine. The passenger (user) can use the camera function and application function of a smartphone or the like having the extended decoder 20 function owned by the passenger, for example, to display the two-dimensional code A displayed on the boarding pass at hand and the desired page of the in-flight magazine. Read the two-dimensional code B displayed on.

As a result, the above-mentioned steps are executed, and it is evaluated that the two-dimensional code A and the two-dimensional code B are associated with each other based on the related code information included in the private data code words.

FIG. 16A shows an example in which the two-dimensional code A of the boarding pass of the passenger “Taro Yamada” and the two-dimensional code of the in-flight magazine that can be referred to in the cabin are read and evaluated. As a result of the evaluation shown in FIG. 16A, if it is evaluated that a plurality of related two-dimensional codes are associated with each other, the characters "authenticated" are displayed.

Then, according to the result of the evaluation of the authentication information, the fixed amount and the target information (for example, "There are 5 special offers to Mr. Yamada.", "Standard wording A, 1.XX Shoji-sama advertisement, 2.YY Logistics guidance, 3.ZZ technology demo video, etc. ”) is displayed on the display of the passenger's smartphone. If the authentication information is not evaluated, the corresponding digital content is displayed based on the information for identifying each page of the in-flight magazine (for example, "publication month ID-A, article ID-A"). You may.

If the passenger has already logged in with the authentication information identified by the member information when the application functioning as the extended decoder 20 is started, the passenger is already identified when the related two-dimensional code B is read in that state. The existing "authentication information (member information)" and the read related two-dimensional code "authentication information" are evaluated, and the information corresponding to the "authentication information (member information)" may be referred to (2). Dimension code A is not read).

Further, for example, when a passenger who is not a member photographs the two-dimensional code B, the "authentication information" corresponding to the "authentication information" included in the two-dimensional code B cannot be grasped (confirmed), so that the two-dimensional code B cannot be grasped (confirmed). You may refer to the content information about the page. What kind of content is referred to is arbitrary.

FIG. 16B shows an example in which the related two-dimensional code of the boarding pass of another passenger (for example, “Mr. Suzuki”) and the related two-dimensional code printed on another page of the in-flight magazine are read and displayed. When the two-dimensional code A and the two-dimensional code B, which are the respective related two-dimensional codes, are read, the above-mentioned steps are executed, the evaluation results based on the respective "authentication information" are displayed, and the evaluation is performed in the same manner as described above. Then, for example, the characters "Authenticated" are displayed.

Subsequently, the target information ID-B (for example, "fixed wording A, limited-time Yatsuhashi, special city tour ticket, WW 10% discount, etc.") is displayed on the display according to the result of the evaluation of the authentication information. The information may be information in which a link such as a URL to a management server that stores such information is embedded.

Further, if it is determined that the passenger's reading of the authentication information and the related two-dimensional code using the extended decoder 20 is in flight, for example, based on the time read by the extended decoder 20 and the time related to boarding. , Information evaluated by the authentication information and the related two-dimensional code may be displayed on the display provided in front of the seat based on the seat information of another passenger (not shown).

Further, for example, in the case of an event participant, the participant's reading of the authentication information and the related two-dimensional code using the extended decoder 20 is based on the time read by the extended decoder 20 and the time related to the event timetable. For example, if it is judged that it is before the event starts, it is judged that it is information about preparation for holding the event, if it is judged that it is during the event, it is judged that it is collaborative information to enjoy the event more, and it is judged that it is after the event is held. For example, an image of the day of the event, a questionnaire regarding the holding of the event, etc. may be displayed (not shown).

Further, the passenger may read the above-mentioned two-dimensional code A and the two-dimensional code B after boarding. In this case, each content information evaluated after boarding may be displayed. As the content information to be displayed, for example, the above-mentioned "Mr. Yamada" and "Mr. Suzuki" may be referred to an in-flight magazine, a questionnaire on boarding customer satisfaction, etc., which display different content information. ..

In addition, the participants may read the above-mentioned two-dimensional code A and the two-dimensional code B after the event is held. In this case, each content information evaluated after the event may be displayed. The displayed content information is, for example, displaying different content information for each participant based on the information of each participant such as the event participants, the venue, the holding time, etc., or a questionnaire regarding customer satisfaction regarding the holding of the event, etc. May be referred to.

<Second application example>
Next, a second application example will be described with reference to FIGS. 17 and 18. FIG. 17 is an explanatory diagram for explaining a second application example. FIG. 18 is a schematic view showing how various information related to the second application example is displayed on the display.

In the second application example, using the above-mentioned related two-dimensional code, for example, the care staff of the facility will definitely administer the drug to the elderly who enter the elderly care facility according to the doctor's prescription. Build a mechanism to check.

In this example, a related two-dimensional code having two chains is used. In addition, there are a plurality (three) related two-dimensional codes of rank number 2. Let the related two-dimensional code of the order number 1 be the two-dimensional code A, and the related two-dimensional code of the order number 2 be the two-dimensional code B, the two-dimensional code B ′, and the two-dimensional code B ″.

The two-dimensional code A is affixed to an elderly wristband or a bedside sign plate. Then, as shown in FIG. 17, the room number, resident name, age, gender, and blood type (for example, "Room 101, XY ZZ, 80 years old, male, O type") are used as public information (information body). It is embedded in the two-dimensional code A, and the disease name (for example, "diabetes") is embedded in the two-dimensional code A as non-public information.

The two-dimensional code B, the two-dimensional code B ″, and the two-dimensional code B ″ are attached to, for example, the packaging material of the medicine to be administered. Then, as shown in FIG. 17, as public information (information body), a room number, a medication method (for example, "Room 101, XX agent, 2 tablets after each breakfast", "Room 101, YY agent, 1 tablet after each breakfast", "Room 101, ZZ agent, 1 tablet when feeling sick") is embedded in 2D code B, 2D code B', 2D code B'', and the date and time of administration (for example, "January XY day") as non-public information. Embed "for daytime") in the two-dimensional code B, the two-dimensional code B', and the two-dimensional code B''.

A care staff who administers a drug to an elderly person owns, for example, a handy terminal as the extended decoder 20, and when the handy terminal is held over the two-dimensional code A and the two-dimensional code B in sequence or at the same time, the handy terminal , The above-mentioned steps are executed, and it is evaluated that the two-dimensional code A and the two-dimensional code B are related to each other. Then, when the evaluation is made, the characters "certified" are displayed as shown in FIG. 18, and "Room 101, XX agent, 2 tablets after each breakfast" is definitely for "XY ZZ-sama". It is authenticated that it is a thing. Therefore, the occurrence of dosing errors is reliably avoided. At the same time, as shown in FIG. 18, public information and non-public information are displayed on the display, and the person in charge or the patient can confirm by looking at the display that no problem has occurred.

The number of packages of medicines to be administered to the same resident at the same time, that is, the related two-dimensional code (for example, the two-dimensional code B) to be confirmed (authenticated) with the two-dimensional code A possessed by the given resident. The total number of groups) may be included in the public or non-public information of the two-dimensional code (for example, the group of the two-dimensional code B) separately printed on the package of the medicine, whereby the medication may be administered. Identification management may be performed so as not to cause leakage.

The group of the two-dimensional code A and the group of the two-dimensional code B are the same as described above, but the group of the two-dimensional code B in the second application example is, for example, a related code relating to the drug to be administered. Each set of related two-dimensional codes in which each element of information (“chain number information”, “order number information”, “index information”) has the same value.

In the selection of the drug to be administered, for example, the care staff appropriately (in advance) appropriately selects the medication instruction group (group) to be confirmed based on the prescription information, the caregiver information, and the like presented by the doctor. The dosing instruction group is information on the administration of each of the plurality of drugs when there are a plurality of drugs to be administered to each resident based on the results of diagnosis by a doctor. As a result, the care staff can confirm the medicine to be administered to each resident from the packaging materials of the plurality of medicines to be administered.

Also, by performing the same work with the two-dimensional code A and the two-dimensional code B', it is authenticated that "Room 101, YY agent, 1 tablet after each breakfast" is definitely for "XY ZZ-sama". .. In addition, by performing with the two-dimensional code A and the two-dimensional code B'', it is certified that "Room 101, ZZ agent, 1 tablet when feeling sick" is definitely for "XY ZZ-like". ..

<Third application example>
Next, a third application example will be described with reference to FIGS. 19 and 20. FIG. 19 is an explanatory diagram for explaining a third application example. FIG. 20 is a schematic view showing how various information related to the third application example is displayed on the display.

In the third application example, using the above-mentioned related two-dimensional code, for example, a case where a helper of home-visit care goes to a client who desires care at home to provide care (for example, installation of other home appliances). In construction, repair work, water supply work, etc.), build a mechanism to ask the client to confirm that the helper who visited is a genuine person.

In this example, a related two-dimensional code having three chains is used. The related two-dimensional code of the order number 1 is the two-dimensional code A, the related two-dimensional code of the order number 2 is the two-dimensional code B, and the related two-dimensional code of the order number 3 is the two-dimensional code C.

The two-dimensional code A is affixed to an ID badge (photograph, a caregiver dispatching company that undertakes nursing care services (hereinafter referred to as a contracting company), and a badge with a name) carried by a helper. Then, as shown in FIG. 19, the helper's name (for example, "XX XX") is embedded in the two-dimensional code A as public information (information body), and the helper's email address (for example, "Kaigo") is used as non-public information. @ ... ") is embedded in the two-dimensional code A.

When the client makes a reservation for day service nursing care to the contractor, for example, the contractor sends the reservation form to the client by e-mail, fax, or the like. The two-dimensional code B is attached to the reservation form. Then, as shown in FIG. 19, the care reservation information (visit date and time, company name, helper name, etc., for example, "February YY day, ZZ care service, XY ZZ") is used as public information (information body) in the two-dimensional code B. (Note that private information is not embedded in this case).

In addition, when the client makes a reservation for work to the contractor, the contractor sends a care instruction to the helper by e-mail or fax. The two-dimensional code C is attached to the nursing care instruction sheet. Then, as shown in FIG. 19, long-term care reservation information (visit date and time, place of visit, long-term care content, etc. as public information (information body). For example, "February YY, Arakawa-ku, Tokyo, Day Service A"). Is embedded in the two-dimensional code C (note that private information is not embedded in this case).

The helper owns, for example, a handy terminal as the extended decoder 20, and holds the handy terminal over the two-dimensional code A to the two-dimensional code C sequentially or simultaneously. Then, in the handy terminal, the above-mentioned steps are executed, and it is evaluated that the two-dimensional code A to the two-dimensional code C are associated with each other. Then, when the evaluation is made, the characters "Authenticated" are displayed as shown in FIG. 20, and it is authenticated that the care content requested by the client is definitely carried out by a genuine helper. .. Therefore, it is ensured that incorrect care work is carried out and that unscrupulous vendors dispatch helpers who are not suitable or who do not have the proper qualifications and skills. In addition, as shown in FIG. 20, public information and non-public information are displayed on the display, and the helper or the client can confirm by looking at the display that no problem has occurred.

In addition, the client participates in the authentication with the related two-dimensional code (that is, the two-dimensional code B) that the client holds to prevent fraudulent work by the contractor (for example, the work is completed even though the acceptance inspection has not been confirmed). can do. In addition, by recording and storing the certification results as a history, it can be used as objective information that is effective as evidence for later audits and verification of complaints and doubts.

(About the effectiveness of the two-dimensional code generation method, etc. according to this embodiment)
As described above, it is a two-dimensional code generation method that generates a plurality of related two-dimensional codes associated with each other, and is a pre-replacement code block that obtains a private data code word and has a public data code word and an error correction code word. Is obtained, and a part of the pre-replacement code block is replaced with the non-public data code word to obtain a post-replacement code block in which the non-public data code word is concealed. By executing the generation step of generating the dimensional code a plurality of times, each of the plurality of related two-dimensional codes is generated, and when the private data code word is obtained in each of the generation steps, the means of transportation is boarded. The authentication information that identifies the target person, the participant of the event, or the person in charge of the service, or the target information that identifies the content provided based on the authentication information, and the plurality of related two-dimensional codes are associated with each other. The relevant code information for making it possible to identify the existence is included in the private data code word.

Further, the extended encoder 10 (two-dimensional code generation system) according to the present embodiment is a two-dimensional code generation system that generates a plurality of related two-dimensional codes associated with each other, and obtains a private data code word. A replacement in which the private data code word is concealed by obtaining a pre-replacement code block having a public data code word and an error correction code word and replacing a part of the pre-replacement code block with the private data code word. By executing the generation step of obtaining the post-code block and generating the related two-dimensional code based on the replacement code block a plurality of times, each of the plurality of related two-dimensional codes is generated, and each of the above-mentioned generations. When requesting the non-public data code word in the process, the authentication information or the content provided based on the authentication information that identifies the target person of the passenger of the means of transportation, the participant of the event, or the person in charge of the service is provided. The non-public data code word includes the target information to be specified and the related two-dimensional code information for making it possible to specify that the plurality of related two-dimensional codes are related to each other.

Further, in the two-dimensional code evaluation method according to the present embodiment, a plurality of related two-dimensional codes generated by the above-mentioned two-dimensional code generation method are read, and the plurality of related two-dimensional codes are associated with each other. This is a two-dimensional code evaluation method for evaluating Authentication information that identifies the target person of the passenger of the means, the participant of the event, or the person in charge of the service, or the target information that identifies the content provided based on the authentication information, and the related code information that extracts the related code information. In the retrieval step of executing the retrieval process for each of the plurality of related two-dimensional codes read, and the authentication information or the target information and the related code information acquired from each of the plurality of related two-dimensional codes. Based on this, it is characterized by having an evaluation step for evaluating that the plurality of related two-dimensional codes are related to each other.

Further, the extended decoder 20 (two-dimensional code evaluation system) according to the present embodiment reads a plurality of related two-dimensional codes generated by the above-mentioned extended encoder 10 (two-dimensional code generation system), and reads the plurality of related two-dimensional codes. An extended decoder 20 (two-dimensional code evaluation system) that evaluates that two-dimensional codes are associated with each other, obtains the post-replacement code block from the related two-dimensional code, and obtains the post-replacement code block from the replacement code block. Content provided based on the authentication information or authentication information that extracts the data code word and identifies the target person of the passenger of the means of transportation, the participant of the event, or the person in charge of the service from the private data code word. The related code information retrieval process for extracting the target information and the related code information for specifying the It was decided to evaluate that the plurality of related two-dimensional codes are associated with each other based on the authentication information or the target information and the related code information.

Further, the extended management system (two-dimensional code management system) according to the present embodiment is an extended encoder 10 (two-dimensional code generation system) that generates a plurality of related two-dimensional codes associated with each other, and is private data. The private data code word is obtained by obtaining a code word, obtaining a pre-replacement code block having a public data code word and an error correction code word, and replacing a part of the pre-replacement code block with the private data code word. Is obtained for the hidden post-replacement code block, and the generation step of generating the related two-dimensional code based on the replaced code block is executed a plurality of times to generate each of the plurality of related two-dimensional codes. In each of the generation steps, when obtaining the private data code word printed / printed on the passenger's boarding pass or the in-flight magazine, it is specified that the plurality of related two-dimensional codes are associated with each other. The extended encoder 10 (two-dimensional code generation system) and the extended encoder 10 (two-dimensional code generation system) that include the authentication information or target information and related code information to enable it in the private data code word are generated. An extended decoder 20 (two-dimensional code evaluation system) that reads a plurality of related two-dimensional codes and evaluates that the plurality of related two-dimensional codes are associated with each other. A related code information extraction process for obtaining the replacement code block, extracting the non-public data code word from the replacement code block, and extracting the authentication information or the target information and the related code information from the private data code word. , Is executed for each of the plurality of related two-dimensional codes read, and based on the authentication information or the target information and the related code information obtained from each of the plurality of related two-dimensional codes, the plurality of It is provided with an extended decoder 20 (two-dimensional code evaluation system) that evaluates that the related two-dimensional codes are associated with each other.

Therefore, it is possible to appropriately realize the authenticity when managing the object with the two-dimensional code by using the technique related to the related two-dimensional code.

Related two-dimensional codes such as the structurally connected two-dimensional code specified in Chapter 9 of the JIS standard are already well known, and techniques using this code have also been proposed. However, conventionally, by evaluating (confirming, determining) that a plurality of related two-dimensional codes are related to each other, the management target by the related two-dimensional code (the person who owns the related two-dimensional code) Nothing was done to ensure (certify) the authenticity of the relevant two-dimensional code (such as the one to which it is attached).

Further, if such a matter is to be implemented using a standard-related two-dimensional code such as a structurally connected two-dimensional code, the following problems may occur.

That is, when the standard decoder reads one of the structurally connected two-dimensional codes (related two-dimensional code), the standard decoder states that this two-dimensional code is the structurally connected two-dimensional code (related two-dimensional code). Can be understood, and a message to that effect (for example, a message such as "Please read the next two-dimensional code") is displayed. Therefore, the operator who operates the standard decoder can easily recognize that this two-dimensional code is not a normal two-dimensional code but a structurally connected two-dimensional code (related two-dimensional code).

Then, such a recognition act can be an opportunity for the operator or the like to take advantage of the operator when the operator is a virtuous trader or the like. For example, the trader or the like analyzes the read structurally connected two-dimensional code (related two-dimensional code), and another structurally connected two-dimensional code associated with the structurally connected two-dimensional code (related two-dimensional code). A dimensional code (related two-dimensional code) can be forged. Then, using this forged other structurally connected two-dimensional code (related two-dimensional code), there is a possibility of doing wrong.

On the other hand, in the present embodiment, the above-mentioned matter is performed by using the original related two-dimensional code instead of the standard related two-dimensional code, and in the original related two-dimensional code, the authentication information and the related code are used. We decided to include the information in a private data code word. Since the standard decoder cannot extract the related code information from the private data code word, even if the standard decoder tries to read the two-dimensional code according to the present embodiment, it only understands it as a normal two-dimensional code and is related. I can't understand that it is a two-dimensional code in the first place. Therefore, the operator who operates the standard decoder cannot recognize that this two-dimensional code is not a normal two-dimensional code but a related two-dimensional code. Therefore, even if the operator is an unscrupulous trader or the like, the trader or the like cannot reach the idea of performing the forgery described above.

As described above, the two-dimensional code generation method, the extended encoder 10 (two-dimensional code generation system), the two-dimensional code evaluation method, the extended decoder 20 (two-dimensional code evaluation system), and the extended management system (two-dimensional) according to the present embodiment. According to the code management system), when the object is managed by the two-dimensional code, the authenticity can be more reliably ensured by using the technique related to the related two-dimensional code.

Further, in the present embodiment, the related code information includes identification information indicating whether or not the two-dimensional code is a related two-dimensional code, and a number of chains indicating the number of chains of a plurality of related two-dimensional codes associated with each other. The information, the order number information indicating which number of the related two-dimensional codes of the related two-dimensional codes for the number of chains the related two-dimensional code including the related code information is, and the related code information are provided. It is decided to have the index information for determining whether or not the related two-dimensional code is associated with another related two-dimensional code whose order number is different from that of the related two-dimensional code.

Further, in the evaluation step, it is confirmed that each of the two-dimensional codes is a related two-dimensional code based on the identification information, and the chain number information acquired from each of the plurality of related two-dimensional codes. And, based on the rank number information, it is confirmed that the rank numbers different from each other for the number of chains are aligned, and based on the index information, the related two-dimensional code for the number of chains having the rank numbers different from each other is confirmed. When it is confirmed that the two-dimensional codes are related to each other, it is evaluated that the plurality of related two-dimensional codes are related to each other.

As described above, in the present embodiment, the identification information, the chain number information, the rank number information, and the index information are included in the non-public data code word. In other words, since the information essential for counterfeiting is hidden, it becomes even more difficult to counterfeit unless a third party knows the hidden information. Therefore, in the present embodiment, the authenticity can be ensured even more reliably.

Further, in the present embodiment, when it is evaluated that the plurality of related two-dimensional codes are related to each other, the present embodiment includes a display step for displaying that the plurality of related two-dimensional codes are related to each other. And said.

Therefore, it is evaluated (confirmed) that a plurality of related two-dimensional codes are associated with each other, and the authenticity of the management target by the related two-dimensional code is guaranteed (authenticated) by the operator of the extended decoder 20. It is possible to clearly inform such matters.

Further, in the present embodiment, in the extraction step, the public data code word is extracted from the replacement code block using the error correction code word, and public information is extracted from the public data code word. A display step of displaying each of the public information when the process is executed for each of the read plurality of related two-dimensional codes and it is evaluated that the plurality of related two-dimensional codes are associated with each other. I decided to have it.

Therefore, the operator of the extended decoder 20 evaluates (confirms) that a plurality of related two-dimensional codes are associated with each other, and the authenticity of the management target by the related two-dimensional code is guaranteed (authenticated). ) Can be known by displaying public information, and additional information embedded in each of the plurality of related two-dimensional codes (for example, in the first application example described above, the medical subject, patient name, age). , Gender, blood type, drug name) can be presented collectively to the operator of the extended decoder 20 and the like.

Further, in the present embodiment, in the retrieval step, the non-public information retrieval process for extracting non-public information from the non-public data code word is executed for each of the plurality of related two-dimensional codes read. In the display step, it was decided to display each of the non-public information.

Therefore, the operator of the extended decoder 20 evaluates (confirms) that a plurality of related two-dimensional codes are associated with each other, and the authenticity of the management target by the related two-dimensional code is guaranteed (authenticated). ) Can be known by displaying non-public information, and additional information embedded in each of the plurality of related two-dimensional codes (for example, disease name, administration, etc. in the first application example described above) can be obtained. It can be presented collectively to the operator of the extended decoder 20 and the like.

Further, in the present embodiment, in the display step, each of the public information is displayed in the order of the rank number, and each non-public information is displayed in the order of the rank number.

Therefore, the public information and the non-public information can be displayed in a desired order without being affected by the reading order of the related two-dimensional code.

Further, in the present embodiment, when it is evaluated that a plurality of related two-dimensional codes are associated with each other, it can be referred to according to the result of authentication based on the authentication information included in the related two-dimensional codes associated with each other. Information will be displayed.

Therefore, it is evaluated (confirmed) that a plurality of related two-dimensional codes are associated with each other, and the authenticity of the management target by the related two-dimensional code is guaranteed (authenticated), and the authentication information is evaluated. It is possible to refer to the corresponding information. It is possible to distinguish or separate the target person or object according to the authentication information and various information contained in multiple related two-dimensional codes, and collectively with a wide range of reference targets (non-members). , It is possible to refer to information limited to detailed categories according to the target person, date and time, place, etc.

(Other embodiments)
The above-described embodiment is for facilitating the understanding of the present invention, and is not for limiting the interpretation of the present invention. It goes without saying that the present invention can be modified and improved without departing from the spirit thereof, and the present invention includes an equivalent thereof. In particular, even the embodiments described below are included in the present invention.

In the above-described embodiment, the two-dimensional code has been described as an example of the two-dimensional code, but the present invention is not limited to this, and other two-dimensional codes may be used. As the other two-dimensional code,
DataMatrix (ISO / IEC16022: 2006, JIS X-0512: 2015) and PDF417 (ISO / IEC15438: 2006, JIS X-0508: 2010)
Can be given as an example.

The two-dimensional code standard is defined by, for example, the JIS standard in Japan and the ISO standard internationally. The two-dimensional code is, for example,
JIS X 0510: 2004 Two-dimensional code symbol-QR code (registered trademark)-, ISO / IEC 18004: 2000, Information Technology-Automatic identification and data capital technology-Barcode code
Etc. are known.

Also, in the Data Matrix code, for example,
JIS X 0512: 2015 Information Technology-Automatic Recognition and Data Acquisition Technology-Barcode Symbol System Specifications-Data Matrix, ISO / IEC 16022: 2006, Information Technology-Automatic information technology and data
Etc. are known.

In addition, in the PDF417 code, for example,
JIS X 0508: 2010 Barcode Symbol System Specification-PDF417, ISO / IEC 15438: 2006, Information technology-Automatic identification and data capital technology-PDF417 bar code
Etc. are known.

Further, in the above embodiment, as a two-dimensional code generation system, an extended encoder 10 such as a handy terminal including a control unit 11, a display device 13, a printing device 14, and an input device 15 has been described as an example. It is not limited to. For example, it may be composed of a server provided in a remote location for executing the generation process, and a terminal provided with a display device 13, a printing device 14, and an input device 15 for exchanging data with the server.

Further, in the above embodiment, as a two-dimensional code evaluation system, an extended decoder 20 such as a handy terminal including a control unit 21, an image pickup device 22, a display device 23, a printing device 24, and an input device 25 will be described as an example. However, it is not limited to this. For example, it may be composed of a server provided in a remote location for executing the evaluation process, and a terminal provided with an image pickup device 22, a display device 23, a printing device 24, and an input device 25 for exchanging data with the server. good. Further, it may be assumed that the printing device 24 does not exist.

Further, the two-dimensional code generation system (two-dimensional code evaluation system) may be a dedicated terminal, or software (application) for executing a generation (evaluation) process on a general-purpose terminal such as a PC, a smartphone, or a mobile phone. ) May be incorporated.

Further, in the above embodiment, the information (public information and non-public information are described as plain text, but encrypted information (cipher text) may be used.

Further, in the above embodiment, a password common to a plurality of related two-dimensional codes associated with each other is used as index information, but the present invention is not limited to this. For example, the parity data specified in Chapter 9.3 of the JIS standard may be used.

Further, in the above embodiment, the generation of the two-dimensional code, the related two-dimensional code, etc. is based on, for example, the structural connection defined in the above-mentioned standard, and for example, authentication by a combination by configuring a plurality of codes. Can be realized. The authentication method using a combination of a plurality of codes is not limited to this.

Further, in the above embodiment, the target person of any of the passengers of the means of transportation, the participants of the event, and the person in charge of the service is a plurality of persons (group passengers, group participants, or a plurality of persons). Etc.), in which case common authentication information is given to each group or group. In this case, for example, the number of people is set for a group or group, and simultaneous reference and access of contents (for example, non-public information) should be permitted within the range up to the number of people. You may.

Further, when the index information is the password and at least one of the public information and the non-public information is a ciphertext (hereinafter, a case where the public information is a ciphertext will be described as an example). It may be as follows. That is, the password may be used as index (heading) information for identifying the encryption key of the ciphertext. For example, for each of the plurality of types of passwords, a key set corresponding to this password (in the case of a public key encryption method, the public key and the extended decoder 20 when the extended encoder 10 encrypts the public information is the public. The private key for decrypting the information) is determined in advance. Then, when a certain password (for example, AF in FIG. 4) is used, the expansion encoder 10 encrypts the public information with the public key corresponding to the password (AF). Further, the extended decoder 20 extracts related code information (password (AF) which is index information) from the private data code word, selects (identifies) the private key corresponding to the password (AF), and uses this private key. Decrypt public information.

In the above embodiment, only confirmation is performed whether or not the index information (password) of the related two-dimensional code for the number of chains is provided. Although such confirmation alone is sufficient, it is possible to further enhance security by associating such a password with a key. That is, if the index information of the related two-dimensional code for the number of chains matches with a password (referred to as BG) other than AF (accidentally due to falsification, etc.), the private key corresponding to BG will be selected and disclosed. Since it becomes impossible to decrypt the information, it is possible to know that the situation is not normal. Therefore, in this form, not only the index information (password) related to the related two-dimensional code for the number of chains matches, but also the index information (password) related to the related two-dimensional code for the number of chains matches in AF. Will be required. Therefore, it is possible to further enhance security.

Further, as a method similar to this, a method of adding an electronic signature may be adopted. That is, the password is used as index (heading) information for specifying the encryption key of the cipher statement, and for each of the plurality of types of passwords, a key set corresponding to this password (expansion encoder 10 provides information (for example, the figure). The private key for encrypting the hash value of TOKYO <cr> MINATO <cr> JP) in 7 to create an electronic signature and the public key for the extended decoder 20 to decrypt the electronic signature and create a hash value) Determine in advance. Then, when a certain password (for example, AF in FIG. 4) is used, the expansion encoder 10 creates an electronic signature with the private key corresponding to the password (AF). The created electronic signature is included in the public information or non-public information shown in FIG. 3 (in the case of public information, TOKYO <cr> <MINATO <cr> JPN and the electronic signature are public information. Further, the extended decoder 20 extracts related code information (password (AF) which is index information) from the private data code word, selects (identifies) the public key corresponding to the password (AF), and selects (identifies) the public key. Create a hash value from a digital signature with. Also, a hash value is created from the information (for example, TOKYO <cr> MINATO <cr> JPN in FIG. 7), and both hash values are compared (confirm that the hash values match).

If the index information of the related two-dimensional code for the number of chains matches with a password (referred to as BG) other than AF (accidentally due to falsification etc.), the public key corresponding to BG will be selected and the electronic signature will be applied. It can be seen that the hash value created using the public key does not match the hash value created from the information (for example, TOKYO <cr> MINATO <cr> JPN in FIG. 7), and the situation is not normal. It has become like. Therefore, in this form, not only the index information (password) related to the related two-dimensional code for the number of chains matches, but also the index information (password) related to the related two-dimensional code for the number of chains matches in AF. Will be required. Therefore, it is possible to further enhance security.

Further, the code block (RS block) may be protected and coded by using the technique disclosed in Japanese Patent Application Laid-Open No. 2017-91039. If such protection coding is performed, the private data code word including the related code information will be more concealed.

1: Two-dimensional code symbol 10: Expansion encoder 11: Control unit 11a: Calculation unit 11b: Storage unit 13: Display device 14: Printing device 15: Input device 20: Expansion decoder 21: Control unit 21a: Calculation unit 21b: Storage unit 22: Imaging device 23: Display device 24: Printing device 25: Input device

Claims (14)

A two-dimensional code generation method that generates multiple related two-dimensional codes associated with each other.
The private data code word is obtained, a pre-replacement code block having a public data code word and an error correction code word is obtained, and a part of the pre-replacement code block is replaced with the private data code word to obtain the non-public data code word. By performing the generation step of obtaining the replaced code block in which the data code word is hidden and generating the related two-dimensional code based on the replaced code block a plurality of times, each of the plurality of related two-dimensional codes can be obtained. Generate and
When the private data code word is obtained in each of the generation steps, it is provided based on the authentication information or the authentication information that identifies the target person of the passenger of the transportation means, the participant of the event, or the person in charge of the service. The non-public data code word is characterized in that the target information for specifying the content to be specified and the related code information for making it possible to identify that the plurality of related two-dimensional codes are associated with each other are included in the private data code word. Dimension code generation method. In the two-dimensional code generation method according to claim 1,
The related code information is
Identification information indicating whether the two-dimensional code is a related two-dimensional code, and
Chain number information indicating the number of chains of multiple related two-dimensional codes associated with each other,
Sequence number information indicating which number of the related two-dimensional code among the related two-dimensional codes for the number of chains the related two-dimensional code having the related code information is.
Index information for determining whether or not the related two-dimensional code provided with the related code information is associated with another related two-dimensional code having a rank number different from that of the related two-dimensional code.
A two-dimensional code generation method characterized by having. A two-dimensional code generation system that generates multiple related two-dimensional codes associated with each other.
The private data code word is obtained, a pre-replacement code block having a public data code word and an error correction code word is obtained, and a part of the pre-replacement code block is replaced with the private data code word to obtain the non-public data code word. Each of the plurality of related two-dimensional codes is obtained by performing the generation step of obtaining the replaced code block in which the data code word is hidden and generating the related two-dimensional code based on the replaced code block a plurality of times. To generate
When the private data code word is obtained in each of the generation steps, it is provided based on the authentication information or the authentication information that identifies the target person of the passenger of the transportation means, the participant of the event, or the person in charge of the service. The non-public data code word is characterized in that the target information for specifying the content to be specified and the related two-dimensional code information for making it possible to identify that the plurality of related two-dimensional codes are associated with each other are included in the private data code word. Two-dimensional code generation system. A two-dimensional code evaluation method that reads a plurality of related two-dimensional codes generated by the two-dimensional code generation method according to claim 1 and evaluates that the plurality of related two-dimensional codes are associated with each other. ,
The replacement code block is obtained from the related two-dimensional code, the private data code word is extracted from the replacement code block, and the passenger of the means of transportation, the participant of the event, or the service is extracted from the private data code word. The plurality of related two-dimensional dimensions obtained by reading the authentication information that identifies one of the persons in charge, the target information that identifies the content provided based on the authentication information, and the related code information extraction process for extracting the related code information. The retrieval process to be performed for each of the codes,
An evaluation step for evaluating that the plurality of related two-dimensional codes are associated with each other based on the authentication information or the target information and the related code information acquired from each of the plurality of related two-dimensional codes.
A two-dimensional code evaluation method characterized by having. The two-dimensional code evaluation method according to claim 4.
The related code information is
Identification information indicating whether the two-dimensional code is a related two-dimensional code, and
Chain number information indicating the number of chains of multiple related two-dimensional codes associated with each other,
Sequence number information indicating which number of the related two-dimensional code among the related two-dimensional codes for the number of chains the related two-dimensional code having the related code information is.
It has index information for determining whether or not the related two-dimensional code including the related code information is associated with another related two-dimensional code having a rank number different from that of the related two-dimensional code.
In the evaluation process,
Based on the identification information, it is confirmed that each of the two-dimensional codes is a related two-dimensional code, and based on the chain number information and the order number information obtained from each of the plurality of related two-dimensional codes. , It is confirmed that the rank numbers different from each other for the number of chains are aligned, and it is confirmed that the related two-dimensional codes for the number of chains having the rank numbers different from each other are associated with each other based on the index information. A two-dimensional code evaluation method, characterized in that the plurality of related two-dimensional codes are evaluated as being associated with each other when the two-dimensional code is specified. The two-dimensional code evaluation method according to claim 5.
A two-dimensional code evaluation method characterized by having a display step of displaying that the plurality of related two-dimensional codes are related to each other when the plurality of related two-dimensional codes are evaluated to be related to each other. .. The two-dimensional code evaluation method according to claim 5.
A two-dimensional code evaluation characterized by having a display step of displaying information that can be referred to based on the authentication information when it is evaluated that the authentication information included in the plurality of related two-dimensional codes is associated with each other. Method. The two-dimensional code evaluation method according to any one of claims 5 to 7.
In the extraction step, the plurality of reading public information extraction processes for extracting the public data code word from the replacement code block using the error correction code word and extracting public information from the public data code word are read. Execute for each of the related 2D codes,
A two-dimensional code evaluation method comprising a display step of displaying each of the public information when it is evaluated that the plurality of related two-dimensional codes are associated with each other. The two-dimensional code evaluation method according to claim 8.
In the retrieval step, a non-public information retrieval process for extracting non-public information from the non-public data code word is executed for each of the plurality of related two-dimensional codes read.
In the display step, a two-dimensional code evaluation method characterized by displaying each of the non-public information. The two-dimensional code evaluation method according to claim 9.
In the display step, a two-dimensional code evaluation method comprising displaying each of the public information in the order of the rank number and displaying each of the non-public information in the order of the rank number. A two-dimensional code evaluation system that reads a plurality of related two-dimensional codes generated by the two-dimensional code generation system according to claim 3 and evaluates that the plurality of related two-dimensional codes are associated with each other. ,
The replacement code block is obtained from the related two-dimensional code, the private data code word is extracted from the replacement code block, and the passenger of the means of transportation, the participant of the event, or the service is extracted from the private data code word. The plurality of related two-dimensional dimensions obtained by reading the authentication information that identifies one of the persons in charge, the target information that identifies the content provided based on the authentication information, and the related code information extraction process for extracting the related code information. Run for each of the codes,
It is characterized in that it evaluates that the plurality of related two-dimensional codes are associated with each other based on the authentication information or the target information acquired from each of the plurality of related two-dimensional codes and the related code information. Two-dimensional code evaluation system. A two-dimensional code management system that generates multiple related two-dimensional codes associated with each other.
The private data code word is obtained, a pre-replacement code block having a public data code word and an error correction code word is obtained, and a part of the pre-replacement code block is replaced with the private data code word to obtain the non-public data code word. Each of the plurality of related two-dimensional codes is obtained by performing the generation step of obtaining the replaced code block in which the data code word is hidden and generating the related two-dimensional code based on the replaced code block a plurality of times. To generate
When the private data code word is obtained in each of the generation steps, the authentication information that identifies the passenger of the transportation means or the target information that identifies the content provided based on the authentication information, and the plurality of related two dimensions. A two-dimensional code generation system that includes related code information in the private data code word to make it possible to identify that the codes are related to each other.
A two-dimensional code evaluation system that reads a plurality of related two-dimensional codes generated by the two-dimensional code generation system and evaluates that the plurality of related two-dimensional codes are associated with each other.
The replacement code block is obtained from the related two-dimensional code, the private data code word is extracted from the replacement code block, and the authentication information or the target information and the related code information are obtained from the private data code word. The related code information fetching process is executed for each of the plurality of read related two-dimensional codes.
Two-dimensional code evaluation that evaluates that the plurality of related two-dimensional codes are associated with each other based on the authentication information or the target information and the related code information acquired from each of the plurality of related two-dimensional codes. With the system
A two-dimensional code management system characterized by being equipped with. A two-dimensional code management system that generates multiple related two-dimensional codes associated with each other.
The private data code word is obtained, a pre-replacement code block having a public data code word and an error correction code word is obtained, and a part of the pre-replacement code block is replaced with the private data code word to obtain the non-public data code word. Each of the plurality of related two-dimensional codes is obtained by performing the generation step of obtaining the replaced code block in which the data code word is hidden and generating the related two-dimensional code based on the replaced code block a plurality of times. To generate
When the private data code word is obtained in each of the generation steps, the authentication information that identifies the participants of the event or the target information that identifies the content provided based on the authentication information, and the plurality of related two-dimensional codes. A two-dimensional code generation system that includes related code information in the private data code word to make it possible to identify that the two are related to each other.
A two-dimensional code evaluation system that reads a plurality of related two-dimensional codes generated by the two-dimensional code generation system and evaluates that the plurality of related two-dimensional codes are associated with each other.
The replacement code block is obtained from the related two-dimensional code, the private data code word is extracted from the replacement code block, and the authentication information or the target information and the related code information are obtained from the private data code word. The related code information fetching process is executed for each of the plurality of read related two-dimensional codes.
Two-dimensional code evaluation that evaluates that the plurality of related two-dimensional codes are associated with each other based on the authentication information or the target information and the related code information acquired from each of the plurality of related two-dimensional codes. With the system
A two-dimensional code management system characterized by being equipped with. A two-dimensional code management system that generates multiple related two-dimensional codes associated with each other.
The private data code word is obtained, a pre-replacement code block having a public data code word and an error correction code word is obtained, and a part of the pre-replacement code block is replaced with the private data code word to obtain the non-public data code word. Each of the plurality of related two-dimensional codes is obtained by performing the generation step of obtaining the replaced code block in which the data code word is hidden and generating the related two-dimensional code based on the replaced code block a plurality of times. To generate
When the private data code word is obtained in each of the generation steps, the authentication information that identifies the person in charge of the service or the target information that identifies the content provided based on the authentication information, and the plurality of related two-dimensional codes. A two-dimensional code generation system that includes related code information in the private data code word to make it possible to identify that the two are related to each other.
A two-dimensional code evaluation system that reads a plurality of related two-dimensional codes generated by the two-dimensional code generation system and evaluates that the plurality of related two-dimensional codes are associated with each other.
The replacement code block is obtained from the related two-dimensional code, the private data code word is extracted from the replacement code block, and the authentication information or the target information and the related code information are obtained from the private data code word. The related code information fetching process is executed for each of the plurality of read related two-dimensional codes.
Two-dimensional code evaluation that evaluates that the plurality of related two-dimensional codes are associated with each other based on the authentication information or the target information and the related code information acquired from each of the plurality of related two-dimensional codes. With the system
A two-dimensional code management system characterized by being equipped with.

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