KR102670320B1 - Solution inquiry service server that supports to be able to inquire the answer information and the commentary information for user-selected question based on the two-dimensional code printed in learning book and operating method thereof - Google Patents

Abstract

A solution inquiry service server and its operating method are disclosed. The present invention provides that when a user who has purchased a learning book recognizes, with an electronic terminal, a two-dimensional code printed on a specific problem that is one of a plurality of problems included in the learning book, the two-dimensional code inserted in the two-dimensional code The present invention relates to a solution search service server that supports the user to search answer information and explanation information for the specific problem based on data and a method of operating the same.

Description

A solution inquiry service server that supports users to search answer information and explanation information for selected problems based on a two-dimensional code printed in a learning book and its operation method {SOLUTION INQUIRY SERVICE SERVER THAT SUPPORTS TO BE ABLE TO INQUIRE THE ANSWER INFORMATION AND THE COMMENTARY INFORMATION FOR USER-SELECTED QUESTION BASED ON THE TWO-DIMENSIONAL CODE PRINTED IN LEARNING BOOK AND OPERATING METHOD THEREOF}

The present invention relates to a solution inquiry service server that supports a user to search answer information and explanation information for a selected problem based on a two-dimensional code printed in a learning book, and a method of operating the same.

Recently, as the economic downturn caused by COVID-19 continues, the shock to the job market is growing.

As a result, competition among students for employment has intensified, and students are putting considerable effort into earning credits to be more competitive than other students.

Typically, solutions are often not provided in study books related to students' majors. Therefore, in order for students to obtain a solution, there was the inconvenience of having to search the web page where the solution was posted directly through the Internet and access the web page to check the solution.

Meanwhile, recently, as the use of two-dimensional codes such as QR code (Quick Response Code), veri code, and dot code has increased, for a plurality of problems included in a certain learning book, answer information for each problem is provided. and by printing a two-dimensional code containing certain information that allows direct access to the web page where the explanatory information is posted, so that the user who purchases the learning book can simply scan the two-dimensional code with his or her electronic terminal. Therefore, the introduction of system technology that supports searching answer information and commentary information can be considered.

Through this, the user who purchased the learning book scans the two-dimensional code printed on one specific problem among the plurality of problems included in the learning book with an electronic terminal, and provides answer information for the problem selected by the user. and explanation information, it will be possible to promote user convenience in that the user can more conveniently and quickly search the answer information and explanation information for the selected problem.

Therefore, research is needed on system technology that supports users to search for answer information and explanation information for selected problems based on two-dimensional codes printed in learning books.

The present invention provides that when a user who has purchased a learning book recognizes, with an electronic terminal, a two-dimensional code printed on a specific problem that is one of a plurality of problems included in the learning book, the two-dimensional code inserted in the two-dimensional code Based on data, a solution inquiry service server and its operation method are presented to enable the user to search for answer information and explanation information for the specific problem, so that the user can more conveniently view answer information and explanation information for the problem. We would like to support you in retrieving information.

According to an embodiment of the present invention, the solution inquiry service server that supports the user to query answer information and explanation information for the problem selected based on the two-dimensional code printed in the learning book is included in the learning book. A URL address storage unit that stores the URL (Uniform Resource Locator) address of a web page on which answer information and explanation information for each of a plurality of problems are posted, and a pre-issued t (t is An identification code storage unit in which identification codes (a natural number of 2 or more) are stored - in the problem display area within the page where each of the plurality of problems in the learning book exists, a pre-issued nxn for each problem (n is n) ² is a natural number greater than 2 designated to be a number greater than t), and a two-dimensional code into which data for an identification matrix of the size is inserted is pre-printed, where the identification matrix for each of the plurality of problems is a matrix constituting the matrix. Among the n ² components, the components located at the t first points pre-designated for each problem are designated with t identification codes for each problem, and the remaining components located at the n ² -t second points are Refers to a matrix designated by randomly generated dummy codes - , a user who has purchased the learning book can access the page where the first problem, which is one of the plurality of problems, exists through an electronic terminal. As the two-dimensional code printed on the first problem display area is scanned and recognized, when the first identification matrix extracted from the two-dimensional code printed on the first problem display area is received from the electronic terminal, the first From the identification matrix, t identification codes for the first problem present in the first identification matrix are extracted, and based on the t identification codes for the extracted first problem, the problem selected by the user is selected from the plurality of problems. A problem identification unit that identifies the first problem as a problem selected by the user among the plurality of problems by identifying which of the problems corresponds to the problem, and a problem identification unit that identifies the first problem as the problem selected by the user among the plurality of problems. 1 When a problem is identified, extracting the URL address of the first web page for the first problem from the URL address storage unit and then transmitting the URL address of the first web page for the first problem to the electronic terminal Includes a URL address transmission unit.

In addition, according to an embodiment of the present invention, the operation method of the solution inquiry service server that supports the user to search answer information and explanation information for the problem selected based on the two-dimensional code printed in the learning book is learned. Maintaining a URL address storage unit in which the URL address of a web page on which answer information and explanation information for each of a plurality of problems included in the book is stored, a pre-issued t corresponding to each of the plurality of problems (t is a natural number of 2 or more) maintaining an identification code storage unit in which identification codes are stored - in the problem display area within the page where each of the plurality of problems exists in the learning book, a pre-issued problem for each problem is stored. A two-dimensional code is pre-printed into which data for an identification matrix of size nxn (n is a natural number of 2 or more specified such that n ² is a number greater than t) is pre-printed, wherein an identification matrix for each of the plurality of problems is provided. In other words, among the n ² components that make up the matrix, the components located at the t first points pre-designated for each problem are designated with t identification codes for each problem, and the remaining n ² -t second points are designated as t numbers. refers to a matrix in which components located at points are designated by randomly generated dummy codes - , the user who has purchased the learning book has a first problem that is one of the plurality of problems through an electronic terminal. When the two-dimensional code printed on the first problem display area in the page is scanned and recognized, and the first identification matrix extracted from the two-dimensional code printed on the first problem display area is received from the electronic terminal, From the first identification matrix, t identification codes for the first problem present in the first identification matrix are extracted, and based on the t identification codes for the extracted first problem, the problem selected by the user Identifying the first problem as a problem selected by the user among the plurality of problems by performing identification as to which of the plurality of problems corresponds to the problem selected by the user; When the first problem is identified, the URL address of the first web page for the first problem is extracted from the URL address storage unit, and then the URL address of the first web page for the first problem is transmitted to the electronic terminal. It includes steps to:

The present invention provides that when a user who has purchased a learning book recognizes, with an electronic terminal, a two-dimensional code printed on a specific problem that is one of a plurality of problems included in the learning book, the two-dimensional code inserted in the two-dimensional code Based on data, a solution inquiry service server and its operation method are presented to enable the user to search for answer information and explanation information for the specific problem, so that the user can more conveniently view answer information and explanation information for the problem. We can assist you in retrieving information.

Figure 1 shows the structure of a solution inquiry service server that supports a user to search answer information and explanation information for a problem selected by the user based on a two-dimensional code printed in a learning book according to an embodiment of the present invention. It is a drawing.
Figure 2 illustrates the operation of the solution inquiry service server that supports the user to search answer information and explanation information for the problem selected based on the two-dimensional code printed in the learning book according to an embodiment of the present invention. This is a drawing for
Figure 3 shows the operation method of the solution inquiry service server that supports the user to search answer information and explanation information for the problem selected based on the two-dimensional code printed in the learning book according to an embodiment of the present invention. This is a flowchart.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the attached drawings. This description is not intended to limit the present invention to specific embodiments, but should be understood to include all changes, equivalents, and substitutes included in the spirit and technical scope of the present invention. In describing each drawing, similar reference numerals are used for similar components, and unless otherwise defined, all terms used in this specification, including technical or scientific terms, are within the scope of common knowledge in the technical field to which the present invention pertains. It has the same meaning as generally understood by those who have it.

In this document, when a part "includes" a certain component, this means that it may further include other components rather than excluding other components, unless specifically stated to the contrary. Additionally, in various embodiments of the present invention, each component, functional block, or means may be composed of one or more subcomponents, and the electrical, electronic, and mechanical functions performed by each component may be electronic. It may be implemented with various known elements or mechanical elements such as circuits, integrated circuits, and ASICs (Application Specific Integrated Circuits), and may be implemented separately or by integrating two or more into one.

Meanwhile, the blocks in the attached block diagram or the steps in the flow chart are computer program instructions that are mounted on the processor or memory of equipment capable of data processing, such as general-purpose computers, special-purpose computers, portable laptop computers, and network computers, and perform designated functions. It can be interpreted to mean. Because these computer program instructions can be stored in a memory provided in a computer device or in a computer-readable memory, the functions described in the blocks of a block diagram or the steps of a flow diagram can be produced as a manufactured product containing instruction means to perform them. It could be. In addition, each block or each step may represent a module, segment, or portion of code that includes one or more executable instructions for executing specified logical function(s). Additionally, it should be noted that in some alternative embodiments, it is possible for functions mentioned in blocks or steps to be executed in a different order. For example, two blocks or steps shown in succession may be performed substantially simultaneously or in reverse order, and in some cases, some blocks or steps may be omitted.

Figure 1 shows the structure of a solution inquiry service server that supports a user to search answer information and explanation information for a problem selected by the user based on a two-dimensional code printed in a learning book according to an embodiment of the present invention. It is a drawing.

Referring to Figure 1, the solution inquiry service server 110 according to the present invention includes a URL address storage unit 111, an identification code storage unit 112, a problem identification unit 113, and a URL address transmission unit 114. do.

First, it is assumed that for each of the plurality of problems included in the learning book in the present invention, t (t is a natural number of 2 or more) pre-issued identification codes corresponding to each problem are assigned. In addition, in the problem display area within the page where each of the plurality of problems exists in the learning book, there is a pre-issued nxn (n is a natural number of 2 or more specified so that n ² is greater than t) for each problem. It is assumed that a two-dimensional code in which data for the identification matrix is inserted is pre-printed.

For example, if 't=4' and the plurality of problems are called 'Problem 1, Problem 2, Problem 3, ...', for each of the plurality of problems, as shown in Table 1 below, Four corresponding identification codes may be pre-issued.

problems of revenge 4 identification codes Problem 1 I ₁ , I ₂ , I ₃ , I ₄ Problem 2 I ₅ , I ₆ , I ₇ , I ₈ Problem 3 I ₉ , I ₁₀ , I ₁₁ , I ₁₂ ... ...

In addition, the identification matrix for each of the plurality of problems means that among the n ² components constituting the matrix, the components located at the t first points pre-designated for each problem are divided into t identification codes for each problem. It means a matrix in which the remaining n ² -t components located at second points are designated with randomly generated dummy codes.

For example, n is '3', t is '4', the plurality of problems are called 'Problem 1, Problem 2, Problem 3, ...', and the four identification codes for each problem are shown in Table 1 above. In the case where it is issued as, the identification matrix for each of the plurality of problems may be structured as shown in Table 2 below.

problems of revenge identification matrix Problem 1 Problem 2 Problem 3 ... ...

In Table 2, 'D ₁ , D ₂ , ...' means randomly generated dummy codes.

As previously assumed, in the problem display area in the page where each of the plurality of problems exists in the learning book, a two-dimensional code in which data for an identification matrix for each of the plurality of problems as shown in Table 2 is inserted may be pre-printed.

Here, the two-dimensional code refers to a code that can insert information such as various characters into a two-dimensional image pattern. QR code (Quick Response Code), veri code, dot code, etc. are used, or Korean registered patent codes are used. A digital code that can express certain data on a two-dimensional image through a pixel space composed of a plurality of points disclosed in No. 10-1897960 can be used. In this regard, the picture shown in FIG. 2 is a digital image capable of expressing predetermined data on a two-dimensional image through a pixel space consisting of a plurality of yellow dots in the problem display area 211 within the page 210 where a problem exists. This shows an example in which the code 212 is inserted into the two-dimensional code. As shown in reference numeral 212, these digital codes are composed of yellow dots, and when compared to a white background, the color contrast is not clear, so it is difficult to clearly observe with the naked eye, but it is difficult to see clearly with the naked eye. The camera has the characteristic of being able to identify yellow dots differently from human vision, allowing the pattern of yellow dots to be clearly identified through an electronic terminal.

In this situation, the URL address storage unit 111 stores the URL (Uniform Resource Locator) address of a web page on which answer information and explanation information for each of the plurality of problems included in the learning book are posted.

For example, when the plurality of problems are referred to as 'Problem 1, Problem 2, Problem 3, ...', information may be stored in the URL address storage unit 111 as shown in Table 3 below.

problems of revenge Answer information and explanation information are posted.
URL address of the web page Problem 1 web page 1 URL address 1 Problem 2 web page 2 URL address 2 Problem 3 web page 3 URL address 3 ... ... ...

The identification code storage unit 112 stores t pre-issued identification codes corresponding to each of the plurality of problems.

For example, in the case of 't=4', information as shown in Table 1 above may be stored in the identification code storage unit 112.

The problem identification unit 113 is printed by the user 125 who purchased the learning book on the first problem display area in the page where the first problem, which is one of the plurality of problems, exists through the electronic terminal 130. As the two-dimensional code is scanned and recognized, when a first identification matrix extracted from the two-dimensional code printed on the first problem display area is received from the electronic terminal 130, from the first identification matrix, Extract t identification codes for the first problem existing in a first identification matrix, and based on the t identification codes for the extracted first problem, the problem selected by the user 125 is one of the plurality of problems. By identifying which of the problems it corresponds to, the first problem is identified as the problem selected by the user 125 among the plurality of problems.

At this time, according to an embodiment of the present invention, the problem identification unit 113 includes a mapping matrix storage unit 115, an operation matrix generation unit 116, a component extraction value generation unit 117, and an identification processing unit 118. can do.

The mapping matrix storage unit 115 stores different mapping matrices corresponding to each of the plurality of problems.

Here, the mapping matrix corresponding to each of the plurality of problems is an nxn size matrix composed of components of 1 and 0, and among the n ² components constituting each mapping matrix, t number of predetermined The components located at point 1 are designated as 1, and the remaining n ² -t components located at second points are designated as 0.

In this regard, if n is '3' and t is '4', and the identification matrix for each of the plurality of problems is configured as shown in Table 2 above, the mapping matrix storage unit 115 has the following Information may be stored as shown in Table 4.

problems of revenge mapping matrix Problem 1 Problem 2 Problem 3 ... ...

The operation matrix generator 116 causes the user 125, who purchased the learning book, to scan and recognize the two-dimensional code printed on the first problem display area through the electronic terminal 130, thereby creating an electronic terminal ( When the first identification matrix extracted from the two-dimensional code printed on the first problem display area is received from 130), for each of the plurality of problems, each problem stored in the mapping matrix storage unit 115 By calculating a Hadamard product between the mapping matrix corresponding to and the first identification matrix, an operation matrix corresponding to each of the plurality of problems is generated.

Here, the Hadamard product refers to the operation of multiplying each component in a matrix of the same size. When there are matrices '[a b c]' and '[x y z]', if the Hadamard product between the two matrices is calculated, the corresponding operation matrix can be expressed as '[ax by cz]'.

When an operation matrix corresponding to each of the plurality of problems is generated, the component extraction value generator 117 generates 0 among the n ² components constituting each operation matrix in the operation matrix corresponding to each of the plurality of problems. By extracting t components, t component extraction values corresponding to each of the plurality of problems are generated.

When t component extraction values corresponding to each of the plurality of problems are generated, the identification processing unit 118 generates t component extraction values corresponding to each problem stored in the identification code storage unit 112 for each of the plurality of problems. By comparing t identification codes and t component extraction values corresponding to each problem, the user 125 determines the problem in which all t identification codes and t component extraction values among the plurality of problems match. The selected problem is identified as the first problem.

In relation to this, the operations of the mapping matrix storage unit 115, the operation matrix generation unit 116, the component extraction value generation unit 117, and the identification processing unit 118 will be described in detail below using examples.

First, as in the above-mentioned example, n is '3' and t is '4', and the user 125 who purchased the learning book includes it in the learning book through a camera mounted on the electronic terminal 130. By scanning and recognizing the two-dimensional code printed in 'problem display area 1' on the page where 'problem 1', which is one of 'problem 1, problem 2, problem 3, ...' exists, the two-dimensional Let us assume that the first identification matrix is extracted from the code as the identification matrix for 'Problem 1'.

At this time, in the first identification matrix, the components located at the four first points pre-designated for 'Problem 1' among the nine components constituting the matrix are 'I _1' , which are the four identification codes for 'Problem 1'. , I ₂ , I ₃ , I ₄ ', and the remaining five components located at the second point are randomly generated dummy codes 'D ₁ , D ₂ , D ₃ , D ₄ , D ₅ '. With the specified matrix, ' 'Let's assume it's the same.

Then, the electronic terminal 130 sends the first identification matrix ' ' can be transmitted.

In this way, the two-dimensional code printed in the 'problem display area 1' is scanned and recognized in the electronic terminal 130, and the first identification matrix ' As ' is extracted, the first identification matrix ' When ' is received, the operation matrix generator 116 generates 'Problem 1, Problem 2, Problem 3, ...' for each problem stored in the mapping matrix storage unit 115 as shown in Table 4 The corresponding mapping matrix ' , , , ...' and the first identification matrix ' ' By calculating the Hadamard product between 'Problem 1, Problem 2, Problem 3, ...', the operation matrix corresponding to each ' , , , ...' can be created.

In this way, when the operation matrix corresponding to each of 'Problem 1, Problem 2, Problem 3, ...' is generated by the operation matrix generator 116, the component extraction value generator 117 generates 'Problem 1, Problem 2 , Problem 3, ...', the operation matrix corresponding to each ' , , , ...', among the 9 components that make up each operation matrix, '1 row 1 column, 1 row 2 columns, 1 row 3 columns, 2 rows 1 column, 2 rows 2 columns, 2 rows 3 columns, 3 By extracting 4 non-zero components in the order of 'row 1, column 3, 2nd column, 3rd row, column 3', four components corresponding to each of 'problem 1, problem 2, problem 3, ...' are extracted. The values are '(I ₁ , I ₂ , I ₃ , I ₄ ), (D ₂ , I ₂ , I ₃ , I ₄ ), (D ₁ , I ₂ , I ₃ , D ₄ ), ...' can be created together.

In this way, when four component extraction values corresponding to 'Problem 1, Problem 2, Problem 3, ...' are generated by the component extraction value generation unit 117, the identification processing unit 118 generates 'Problem 1, Problem 2, Problem 3, ...', four identification codes corresponding to each problem stored in the identification code storage unit 112 as shown in Table 1 above, '(I ₁ , I ₂ , I ₃ , I ₄ ), (I ₅ , I ₆ , I ₇ , I ₈ ), (I ₉ , I ₁₀ , I ₁₁ , I ₁₂ ), ...', and the four component extraction values corresponding to each problem, ' (I ₁ , I ₂ , I ₃ , I ₄ ), (D ₂ , I ₂ , I ₃ , I ₄ ), (D ₁ , I ₂ , I ₃ , D ₄ ), ...' can be compared to each other. there is.

As a result, if it is confirmed that all four identification codes and four component extraction values match for 'Problem 1' among 'Problem 1, Problem 2, Problem 3, ...', the identification processing unit (118 ) may identify 'Problem 1' as the first problem, which is the problem selected by the user 125.

The URL address transmission unit 114 extracts the URL address of the first web page for the first problem from the URL address storage unit 111, and then sends the URL address of the first web page for the first problem to the electronic terminal. Send to (130).

At this time, according to an embodiment of the present invention, when the electronic terminal 130 receives the URL address of the first web page for the first problem from the solution inquiry service server 110, the URL of the first web page Based on the address, the first web page for the first question is accessed, and the answer information and explanation information for the first question posted on the first web page are displayed on the screen of the electronic terminal 130. can do.

For example, as in the above-mentioned example, when 'Problem 1' is identified as the problem selected by the user 125 by the problem identification unit 113, the URL address transmission unit 114 stores the URL address as shown in Table 3 above. From unit 111, 'URL address 1' of 'web page 1' for 'problem 1' can be extracted.

Afterwards, the URL address transmission unit 114 may transmit 'URL address 1' of 'web page 1' for 'problem 1' to the electronic terminal 130.

At this time, when the electronic terminal 130 receives the 'URL address 1' of 'web page 1' for 'problem 1' from the solution inquiry service server 110, the electronic terminal 130 uses the 'URL address 1' of 'web page 1' based on By accessing 'Web Page 1', the answer information and explanation information for 'Problem 1' posted on 'Web Page 1' can be displayed on the screen of the electronic terminal 130.

Through this, the user 125 can refer to the answer information and commentary information for 'Problem 1' posted on 'Web Page 1' displayed on the screen of the electronic terminal 130.

According to one embodiment of the present invention, the solution inquiry service server 110 may further include a review request message transmission unit 119 and a modification completion notification message transmission unit 120.

After the answer information and commentary information for the first question are displayed on the screen of the electronic terminal 130, the review request message transmission unit 119 sends the answer information and commentary information for the first question from the electronic terminal 130. When an error message indicating that an error exists in the information is generated and received, the URL address of the first web page is transmitted to the administrator terminal 140 held by the administrator 135 of the learning book, and the first web page is transmitted to the administrator terminal 140 held by the administrator 135 of the learning book. A review request message requesting review of answer information and explanation information for the problem is generated and transmitted to the administrator terminal 140.

After the URL address of the first web page and the review request message are transmitted to the administrator terminal 140 through the review request message transmission unit 119, the modification completion notification message transmission unit 120 sends the URL address of the first web page to the manager 135. As the answer information and explanation information for the first problem posted on the first web page are modified, the administrator terminal 140 receives a correction indicating that the answer information and explanation information for the first problem have been modified. When a completion message is generated and received, a correction completion notification message indicating that the answer information and explanation information for the first problem has been modified is generated and transmitted to the electronic terminal 130.

For example, as in the above-described example, after the answer information and commentary information for 'Problem 1' are displayed on the screen of the electronic terminal 130, 'Problem 1' is sent from the electronic terminal 130 to the solution inquiry service server 110. Let's assume that an error message indicating that an error exists in the answer information and explanation information for ' is generated and received.

Then, the review request message transmission unit 119 transmits the 'URL address 1' of 'Web Page 1' to the manager terminal 140 held by the manager 135 of the learning book, and provides a solution for 'Problem 1'. A review request message requesting review of answer information and commentary information may be created and transmitted to the administrator terminal 140.

At this time, as 'URL address 1' of 'Web Page 1' is received from the solution inquiry service server 110 to the administrator terminal 140, the review request message is sent from the solution inquiry service server 110 to the administrator terminal 140. Once created and received, the manager 135 accesses 'web page 1' based on the 'URL address 1' of 'web page 1' received in the manager terminal 140 and posts the message on 'web page 1'. You can check the answer information and explanation information for 'Problem 1'.

As a result, if it is confirmed that there is an error in the answer information and explanation information for 'Problem 1' posted on 'Web Page 1', the administrator 135 will correct 'Problem 1' posted on 'Web Page 1' You can edit the answer information and commentary information for '. Then, the manager 135 may grant a completion command to the manager terminal 140 indicating that the answer information and explanation information for 'Problem 1' posted on 'Web Page 1' have been modified, and at this time, The administrator terminal 140 may generate a modification completion message indicating that the answer information and explanation information for 'Problem 1' posted on 'Web Page 1' have been modified and transmit it to the solution inquiry service server 110.

As a result, when the modification completion message is received by the solution inquiry service server 110 from the administrator terminal 140, the modification completion notification message transmission unit 120 indicates that the answer information and explanation information for 'Problem 1' have been modified. A modification completion notification message can be created and transmitted to the electronic terminal 130.

In this way, when the modification completion notification message is generated from the solution inquiry service server 110 and received by the electronic terminal 130, the user 125, based on the 'URL address 1' of 'web page 1', By reconnecting to 'Page 1', you can refer to the revised answer information and explanation information for 'Problem 1' posted on 'Web Page 1'.

According to one embodiment of the present invention, the solution inquiry service server 110 may further include a inquiry history information generation unit 121 and a registration request unit 122.

When the URL address of the first web page for the first problem is transmitted to the electronic terminal 130 through the URL address transmission unit 114, the inquiry history information generating unit 121 provides information about the first problem. After generating time information about when the URL address of the first web page was transmitted to the electronic terminal 130, a query consisting of the time information, information about the first problem, and the URL address of the first web page Create history information.

When the inquiry history information is generated, the registration request unit 122 generates a transaction including the inquiry history information, and then sends the registration request unit 122 to one of the plurality of node devices 101, 102, 103, and 104 constituting the blockchain network. A first node device is randomly selected, and while transmitting the transaction to the first node device, a request for registration of the transaction to the blockchain network is transmitted.

At this time, when the first node device receives the transaction and the registration request from the solution inquiry service server 110, the first node device based on the previous block linked in a chain to the blockchain data stored on the memory of the first node device , After completing storage of the first block by creating a first block containing the transaction and connecting the first block to the blockchain data as a chain, the first block is transmitted through the blockchain network. can be propagated to the remaining node devices except the first node device among the plurality of node devices 101, 102, 103, and 104.

Specifically, when the first node device receives the registration request together with the transaction from the solution inquiry service server 110, the first node device includes the transaction by referring to the block header of the previous block linked to the blockchain data in a chain. The first block, which is a new block, can be created. Then, the first node device connects the first block to the blockchain data in a chain, and after completing storage of the first block, transfers the first block to a plurality of node devices through the blockchain network. Among the nodes 101, 102, 103, and 104, it can be propagated to the remaining node devices except the first node device.

In this way, when the URL address of the first web page for the first problem is completely transmitted to the electronic terminal 130, the solution inquiry service server 110 according to the present invention generates the inquiry history information and transmits it to the blockchain network. By registering, the manager 135 can support the monitoring of when and how much people have viewed the answer information and explanation information for the first question.

Figure 3 shows the operation method of the solution inquiry service server that supports the user to search answer information and explanation information for the problem selected based on the two-dimensional code printed in the learning book according to an embodiment of the present invention. This is a flowchart.

In step S310, a URL address storage unit is maintained in which the URL address of a web page on which answer information and explanation information for each of a plurality of problems included in the learning book is posted is stored.

In step S320, an identification code storage unit is maintained in which t (t is a natural number of 2 or more) pre-issued identification codes corresponding to each of the plurality of problems are stored. (The plurality of problems in the learning book In the problem display area within the page where each exists, a two-dimensional code in which data for an identification matrix of size nxn (n is a natural number greater than or equal to 2 specified so that n ² is greater than t) for each problem is inserted. is pre-printed, where the identification matrix for each of the plurality of problems means that the components located at the t first points pre-designated for each problem among the n ² components constituting the matrix are for each problem. refers to a matrix designated by t identification codes, and the remaining components located at the n ² -t second points are designated by randomly generated dummy codes)

In step S330, the user who purchased the learning book scans and recognizes the two-dimensional code printed on the first problem display area in the page where the first problem, which is one of the plurality of problems, exists through an electronic terminal. Accordingly, when a first identification matrix extracted from a two-dimensional code printed on the first problem display area is received from the electronic terminal, from the first identification matrix, the first identification matrix present in the first identification matrix is received. Extract t identification codes for the problem, and identify which of the plurality of problems the problem selected by the user corresponds to, based on the t identification codes for the extracted first problem. By doing so, the first problem is identified as the problem selected by the user among the plurality of problems.

In step S340, when the first problem is identified as the problem selected by the user, the URL address of the first web page for the first problem is extracted from the URL address storage unit, and then the URL address of the first web page for the first problem is extracted. 1 The URL address of the web page is transmitted to the electronic terminal.

At this time, according to an embodiment of the present invention, in step S330, different mapping matrices corresponding to each of the plurality of problems (the mapping matrix corresponding to each of the plurality of problems is composed of components of 1 and 0) It is a matrix of nxn size, and among the n ² components constituting each mapping matrix, the components located at the t first points pre-designated for each problem are designated as 1, and the remaining n ² -t second points are designated as 1. components located in are designated as 0), maintaining a mapping matrix storage unit in which the user who has purchased the learning book stores a two-dimensional code printed on the first problem display area through the electronic terminal. By scanning and recognizing, when the first identification matrix extracted from the two-dimensional code printed on the first problem display area is received from the electronic terminal, the mapping matrix is stored for each of the plurality of problems. generating an operation matrix corresponding to each of the plurality of problems by calculating a Hadamard product between the mapping matrix corresponding to each problem stored in the unit and the first identification matrix, When an operation matrix is generated, by extracting t non-zero components among the n ² components constituting each operation matrix from the operation matrix corresponding to each of the plurality of problems, Generating t component extraction values and generating t component extraction values corresponding to each of the plurality of problems, corresponding to each problem stored in the identification code storage for each of the plurality of problems. By comparing t identification codes and t component extraction values corresponding to each problem, the user determines a problem in which all t identification codes and t component extraction values among the plurality of problems match. It may include the step of identifying the first problem as the selected problem.

Additionally, according to one embodiment of the present invention, when the electronic terminal receives the URL address of the first web page for the first problem from the solution inquiry service server, the electronic terminal uses the URL address of the first web page based on the URL address of the first web page. , the first web page for the first problem can be accessed, and the answer information and explanation information for the first problem posted on the first web page can be displayed on the screen of the electronic terminal.

At this time, according to one embodiment of the present invention, the method of operating the solution inquiry service server is after the answer information and explanation information for the first problem are displayed on the screen of the electronic terminal, from the electronic terminal, the first When an error message indicating that an error exists in the answer information and explanation information for the problem is generated and received, the URL address of the first web page is transmitted to an administrator terminal held by the administrator of the learning book, 1 generating a review request message requesting review of answer information and explanation information for a problem and transmitting it to the administrator terminal; and after the URL address of the first web page and the review request message are transmitted to the administrator terminal, As the answer information and explanation information for the first problem posted on the first web page are modified by the administrator, the administrator terminal indicates that the answer information and explanation information for the first problem have been modified. When the revision completion message is generated and received, the method may further include generating a revision completion notification message indicating that the answer information and explanation information for the first problem have been revised and transmitting the revision completion message to the electronic terminal.

In addition, according to one embodiment of the present invention, the method of operating the solution inquiry service server is that when the URL address of the first web page for the first problem is completely transmitted to the electronic terminal, the solution query service server for the first problem After generating time information about when the URL address of the first web page was transmitted to the electronic terminal, inquiry history information consisting of the time information, information about the first problem, and the URL address of the first web page is generated. When the generation step and the inquiry history information are generated, a transaction containing the inquiry history information is created, and then a first node device, which is one of a plurality of node devices constituting the blockchain network, is randomly selected. , It may further include transmitting, to the first node device, a request for registration of the transaction to the blockchain network while transmitting the transaction.

At this time, when the transaction and the registration request are received from the solution inquiry service server, the first node device, based on the previous block chained to the blockchain data stored in the memory of the first node device, After completing the storage of the first block by creating a first block containing a transaction and connecting the first block to the blockchain data as a chain, the first block is sent through the blockchain network, It can propagate to the remaining node devices except the first node device among the plurality of node devices.

Above, the operation method of the solution inquiry service server according to an embodiment of the present invention has been described with reference to FIG. 3. Here, the operation method of the solution inquiry service server according to an embodiment of the present invention may correspond to the configuration of the operation of the solution inquiry service server 110 described using Figures 1 and 2, so a more detailed description thereof is provided. will be omitted.

The operation method of the solution inquiry service server that supports the user to search for answer information and explanation information for the problem selected based on the two-dimensional code printed in the learning book according to an embodiment of the present invention is combined with a computer. It can be implemented as a computer program stored in a storage medium for execution through .

In addition, the method of operating the solution inquiry service server that supports the user to search answer information and explanation information for the problem selected based on the two-dimensional code printed in the learning book according to an embodiment of the present invention includes a computer and It can be implemented in the form of computer program instructions for execution through a combination and recorded on a computer-readable medium. The computer-readable medium may include program instructions, data files, data structures, etc., singly or in combination. Program instructions recorded on the medium may be specially designed and constructed for the present invention or may be known and usable by those skilled in the art of computer software. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tapes, optical media such as CD-ROMs and DVDs, and magnetic media such as floptical disks. -Includes optical media (magneto-optical media) and hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, flash memory, etc. Examples of program instructions include machine language code, such as that produced by a compiler, as well as high-level language code that can be executed by a computer using an interpreter, etc.

As described above, the present invention has been described with specific details such as specific components and limited embodiments and drawings, but this is only provided to facilitate a more general understanding of the present invention, and the present invention is not limited to the above embodiments. , those skilled in the art can make various modifications and variations from this description.

Accordingly, the spirit of the present invention should not be limited to the described embodiments, and the scope of the patent claims described later as well as all things that are equivalent or equivalent to the scope of this patent claim shall fall within the scope of the spirit of the present invention. .

110: Solution inquiry service server that supports the user to search answer information and explanation information for the problem selected based on the two-dimensional code printed in the learning book
111: URL address storage unit 112: Identification code storage unit
113: Problem identification unit 114: URL address transmission unit
115: mapping matrix storage unit 116: operation matrix generation unit
117: component extraction value generation unit 118: identification processing unit
119: Review request message transmission unit 120: Modification completion notification message transmission unit
121: Inquiry history information generation unit 122: Registration request unit
125: user
130: Electronic terminal
135: Administrator
140: Administrator terminal
101, 102, 103, 104: multiple node devices

Claims (12)

In the solution search service server that supports the user to search answer information and explanation information for the problem selected based on the two-dimensional code printed in the learning book,
A URL address storage unit storing the URL (Uniform Resource Locator) address of a web page on which answer information and explanation information for each of a plurality of problems included in the learning book are posted;
An identification code storage unit in which t (t is a natural number of 2 or more) pre-issued identification codes corresponding to each of the plurality of problems are stored - Displaying a problem in a page where each of the plurality of problems exists in the learning book The area is preprinted with two-dimensional code into which data for a preissued identity matrix of size nxn (where n is a natural number greater than or equal to 2 specified such that n ² is greater than t) for each problem is inserted, where: The identification matrix for each of the plurality of problems means that among the n ² components constituting the matrix, components located at t first points pre-designated for each problem are designated with t identification codes for each problem. and means a matrix in which the remaining n ² -t components located at the second points are designated by randomly generated dummy codes - ;
As the user who purchased the learning book scans and recognizes the two-dimensional code printed on the first problem display area in the page where the first problem, which is one of the plurality of problems, exists, through an electronic terminal, When a first identification matrix extracted from a two-dimensional code printed on the first problem display area is received from an electronic terminal, t By extracting identification codes and identifying which of the plurality of problems the problem selected by the user corresponds to, based on the extracted t identification codes for the first problem, a problem identification unit that identifies the first problem as a problem selected by the user among problems;
When the first problem is identified as the problem selected by the user, the URL address of the first web page for the first problem is extracted from the URL address storage unit, and then the URL of the first web page for the first problem is extracted. a URL address transmission unit that transmits an address to the electronic terminal;
After the URL address of the first web page for the first problem is transmitted to the electronic terminal, an error message indicating that an error exists in the answer information and explanation information for the first problem is sent from the electronic terminal. When generated and received, the URL address of the first web page is transmitted to the administrator terminal held by the administrator of the learning book, and a review request message is generated requesting review of the answer information and explanation information for the first problem. a review request message transmission unit that transmits the message to the manager terminal; and
After the URL address of the first web page and the review request message are transmitted to the administrator terminal through the review request message transmission unit, the answer to the first question posted on the first web page by the administrator As the information and explanation information are modified, when a revision completion message is generated and received from the administrator terminal indicating that the answer information and explanation information for the first problem have been modified, the answer information and explanation information for the first problem A modification completion notification message transmission unit that generates a modification completion notification message indicating that the modification has been completed and transmits it to the electronic terminal.
Including,
The problem identification unit
Different mapping matrices corresponding to each of the plurality of problems - The mapping matrix corresponding to each of the plurality of problems is a matrix of size nxn composed of components of 1 and 0, and n constituting each mapping matrix Among the ^two components, the components located at the t first points pre-specified for each problem are designated as 1, and the remaining components located at the n ² -t second points are designated as 0. - This storage a mapping matrix storage unit;
As the user who purchased the learning book scans and recognizes the two-dimensional code printed on the first problem display area through the electronic terminal, 2 printed on the first problem display area is received from the electronic terminal. When the first identification matrix extracted from the dimensional code is received, for each of the plurality of problems, a Hadamard product ( an operation matrix generator that generates an operation matrix corresponding to each of the plurality of problems by calculating a Hadamard product;
When an operation matrix corresponding to each of the plurality of problems is generated, by extracting t non-zero components among the n ² components constituting each operation matrix from the operation matrix corresponding to each of the plurality of problems, a component extraction value generator generating t component extraction values corresponding to each of the plurality of problems; and
When t component extraction values corresponding to each of the plurality of problems are generated, for each of the plurality of problems, t identification codes corresponding to each problem stored in the identification code storage unit, and each problem Comparing t component extraction values corresponding to each other, identifying the problem in which all t identification codes and t component extraction values match among the plurality of problems as the first problem, which is the problem selected by the user. processing department
A solution containing a query service server. delete According to paragraph 1,
The electronic terminal is
When the URL address of the first web page for the first problem is received from the solution inquiry service server, the first web page for the first problem is accessed based on the URL address of the first web page. , A solution inquiry service server that displays answer information and commentary information for the first problem posted on the first web page on the screen of the electronic terminal. delete According to paragraph 1,
When the URL address of the first web page for the first problem is completely transmitted to the electronic terminal through the URL address transmission unit, the URL address of the first web page for the first problem is transmitted to the electronic terminal. a query history information generating unit that generates time information about the point in time, and then generates query history information consisting of the time information, information about the first problem, and the URL address of the first web page; and
When the inquiry history information is generated, a transaction containing the inquiry history information is created, and then a first node device, which is one of a plurality of node devices constituting the blockchain network, is randomly selected, and the first node device is randomly selected. A registration request unit that transmits, to a node device, a request for registration of the transaction to the blockchain network while transmitting the transaction.
It further includes,
The first node device is
When the transaction and the registration request are received from the solution inquiry service server, the first block containing the transaction is created based on the previous block linked in a chain to the blockchain data stored on the memory of the first node device. After completing storage of the first block by creating and linking the first block to the blockchain data as a chain, the first block is transferred to the first block among the plurality of node devices through the blockchain network. A solution inquiry service server characterized in that it propagates to the remaining node devices except the first node device. In the method of operating a solution search service server that supports a user to search answer information and explanation information for a problem selected based on a two-dimensional code printed in a learning book,
maintaining a URL address storage unit that stores the URL (Uniform Resource Locator) address of a web page on which answer information and explanation information for each of a plurality of problems included in the learning book are posted;
Maintaining an identification code storage unit in which t (t is a natural number of 2 or more) pre-issued identification codes corresponding to each of the plurality of problems are stored - a page on which each of the plurality of problems exists in the learning book In the problem display area within, there is a pre-printed two-dimensional code inserted with data for a pre-issued identification matrix of size nxn (where n is a natural number greater than or equal to 2 specified such that n ² is a number greater than t) for each problem; , where the identification matrix for each of the plurality of problems means that among the n ² components constituting the matrix, the components located at the t first points pre-designated for each problem are t identification codes for each problem. It is designated as , and it means a matrix in which the remaining n ² -t components located at the second points are designated with randomly generated dummy codes - ;
As the user who purchased the learning book scans and recognizes the two-dimensional code printed on the first problem display area in the page where the first problem, which is one of the plurality of problems, exists, through an electronic terminal, When the first identification matrix extracted from the two-dimensional code printed on the first problem display area is received from the electronic terminal, the problem identification unit selects the first problem present in the first identification matrix from the first identification matrix. By extracting t identification codes for and identifying which of the plurality of problems the problem selected by the user corresponds to, based on the t identification codes for the extracted first problem. , identifying the first problem as a problem selected by the user among the plurality of problems;
When the first problem is identified as a problem selected by the user, the URL address transmitting unit extracts the URL address of the first web page for the first problem from the URL address storage unit, and then extracts the URL address of the first web page for the first problem. 1. Transmitting the URL address of a web page to the electronic terminal;
After the URL address of the first web page for the first problem is transmitted to the electronic terminal, an error message indicating that an error exists in the answer information and explanation information for the first problem is sent from the electronic terminal. When generated and received, the review request message transmission unit transmits the URL address of the first web page to the administrator terminal held by the administrator of the learning book, requesting review of the answer information and commentary information for the first problem. generating a review request message and transmitting it to the manager terminal; and
After the URL address of the first web page and the review request message are transmitted to the administrator terminal, the answer information and explanation information for the first question posted on the first web page are modified by the administrator. , when a modification completion message indicating that the answer information and commentary information for the first problem has been modified is generated and received from the administrator terminal, the correction completion notification message transmission unit sends the answer information and commentary information for the first problem Creating a modification completion notification message indicating that modification has been completed and transmitting it to the electronic terminal
Including,
The step of identifying the first problem is
Different mapping matrices corresponding to each of the plurality of problems - The mapping matrix corresponding to each of the plurality of problems is a matrix of size nxn composed of components of 1 and 0, and n constituting each mapping matrix Among the ^two components, the components located at the t first points pre-specified for each problem are designated as 1, and the remaining components located at the n ² -t second points are designated as 0. - This storage maintaining a mapping matrix storage unit;
As the user who purchased the learning book scans and recognizes the two-dimensional code printed on the first problem display area through the electronic terminal, 2 printed on the first problem display area is received from the electronic terminal. When the first identification matrix extracted from the dimensional code is received, the operation matrix generator generates, for each of the plurality of problems, a mapping matrix corresponding to each problem stored in the mapping matrix storage unit and the first identification matrix. generating an operation matrix corresponding to each of the plurality of problems by calculating a Hadamard product between them;
When an operation matrix corresponding to each of the plurality of problems is generated, the component extraction value generator generates a t non-zero among the n ² components constituting each operation matrix in the operation matrix corresponding to each of the plurality of problems. generating t component extraction values corresponding to each of the plurality of problems by extracting components; and
When t component extraction values corresponding to each of the plurality of problems are generated, the identification processing unit generates, for each of the plurality of problems, t identification codes corresponding to each problem stored in the identification code storage unit. And, the t component extraction values corresponding to each problem are compared with each other, and the problem in which the t identification codes and the t component extraction values all match among the plurality of problems is selected as the first problem, which is the problem selected by the user. Steps to identify with
A method of operation of the solution inquiry service server including. delete According to clause 6,
The electronic terminal is
When the URL address of the first web page for the first problem is received from the solution inquiry service server, the first web page for the first problem is accessed based on the URL address of the first web page. , A method of operating a solution inquiry service server, characterized in that the answer information and explanation information for the first problem posted on the first web page are displayed on the screen of the electronic terminal. delete According to clause 6,
When the URL address of the first web page for the first problem is completely transmitted to the electronic terminal, the inquiry history information generating unit transmits the URL address of the first web page for the first problem to the electronic terminal. After generating time information about the viewpoint, generating inquiry history information consisting of the time information, information about the first problem, and the URL address of the first web page; and
When the inquiry history information is generated, the registration request unit creates a transaction containing the inquiry history information, and then randomly selects a first node device, which is one of a plurality of node devices constituting the blockchain network. , transmitting, to the first node device, a request for registration of the transaction to the blockchain network while transmitting the transaction.
It further includes,
The first node device is
When the transaction and the registration request are received from the solution inquiry service server, the first block containing the transaction is created based on the previous block linked in a chain to the blockchain data stored on the memory of the first node device. After completing storage of the first block by creating and linking the first block to the blockchain data as a chain, the first block is transferred to the first block among the plurality of node devices through the blockchain network. A method of operating a solution inquiry service server, characterized in that it propagates to the remaining node devices except the first node device. A computer-readable recording medium recording a computer program for executing the method of any one of claims 6, 8, or 10 through combination with a computer. A computer program stored in a storage medium for executing the method of any one of claims 6, 8, or 10 through combination with a computer.

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