JP2016057993A - Content display device and content display method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a feature for preventing a user from confusing when accessing a link destination, and for improving convenience of the user.SOLUTION: The content display device determines, when link information is present in a display object page, whether a link destination corresponding to the link information is accessible. The content display device displays the display object page with the link information remained when the link destination is accessible, and display the display object page after deleting the link information when the link destination is not accessible.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a content display device and a content display method, and, for example, relates to a technique for processing link information existing on a display target page.

  As represented by a URL (Universal Resource Locator) used in WWW (World Wide Web) browsers, it is common to embed data indicating the location of electronic content in a document and browse the content while following it. It has become. There is also data indicating not only a position but also a general name including a person and a document as seen in URN (Universal Resource Name). The URL and URN are generally called a URI (Universal Resource Identifier).

  As a URL link display format, a related word or phrase that is the source of a link in a document is generally underlined or corresponds to a link destination title. In addition, there is a display format in the form of an icon instead of a phrase, and in some cases, it is displayed so that a user can easily understand which part has a link.

JP 2011-109326 A JP 2004-178512 A

  There is no particular problem as long as the link is pointed to one and the content ahead can be accessed. However, if there is no link destination server or content, or there is a network failure, the link destination information is not displayed, and the user may be confused. In particular, in the case of URN, there may be cases where a plurality of things pointed to by URN are found, or conversely, the user may be confused. For example, the link destination in an electronic teaching material may be a page with an electronic textbook or an item in a dictionary, but the corresponding textbook may not be used by the school, and the corresponding content is a textbook, dictionary, or auxiliary teaching material. It may appear in multiple. If the display of the link destination is not appropriate for the situation, the user's knowledge, especially in primary education, is insufficient, the cognitive ability is in the process of development, and there are large differences between individuals. It is expected that users will be confused and lessons will be difficult.

  By the way, there are techniques disclosed in Patent Documents 1 and 2 as techniques for preventing user confusion regarding content display. Japanese Patent Application Laid-Open No. 2004-228561 discloses a display method related to a mail transmission destination, in which once a mail is sent, the link is deleted to prevent re-sending. Patent Document 2 discloses a method for displaying linked content, in which content is summarized and the display magnification is changed, and the link destination is presented in an easy-to-understand manner. Specifically, an important portion or image portion indicated by an HTML h tag or b tag is extracted and further enlarged and reduced to be displayed in an easy-to-understand manner for the user.

  However, in Patent Document 1, the link display is turned off once communication to the link destination is completed. Therefore, the technique disclosed in Patent Document 1 is desirable for links that are inconvenient when a plurality of communications are performed, but is not desirable when the link destination is followed many times. Moreover, in patent document 2, it cannot respond when the link destination is shown by the name of a thing like the case where it is shown by URN, and when there are a plurality of link destinations or there is no target.

  The present invention has been made in view of such a situation, and provides a technique for preventing user confusion when accessing a link destination and improving user convenience.

  In order to solve the above problem, in the present invention, the content display device determines whether the link destination corresponding to the link information is accessible when the link information exists on the display target page. When the link destination is accessible, the content display device displays the display target page while leaving the link information, and when the link destination is not accessible, the content display device deletes the link information and displays the display target page. indicate.

  Further features related to the present invention will become apparent from the description of the present specification and the accompanying drawings. The embodiments of the present invention can be achieved and realized by elements and combinations of various elements and the following detailed description and appended claims.

  It should be understood that the description herein is merely exemplary and is not intended to limit the scope of the claims or the application of the invention in any way.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to prevent a user's confusion at the time of accessing a link destination, and to improve a user's convenience.

It is a figure which shows the whole schematic structure of the content display system by embodiment of this invention. It is a figure which shows the structural example of electronic teaching material metadata DB. It is a figure which shows the example of a data structure of a search cache. It is a figure which shows the structural example of a table of contents page. It is a figure which shows the structural example of a text page. It is a flowchart for demonstrating the hyperlink process at the time of a page display. It is a flowchart for demonstrating the process which confirms the presence or absence of the information of a link destination. It is a flowchart for demonstrating the search process of the content corresponding to the "name" in an electronic teaching material. It is a flowchart for demonstrating the display process of the content of a link destination. It is a figure which shows the example of a form which displays the some link destination on a page. It is a flowchart for demonstrating the search process of the content using a search server.

  The present invention relates to, for example, a hyperlink that points to a specific part in an electronic teaching material. In particular, it relates to technology that makes it easier for users to handle hyperlinks by changing the method of displaying hyperlinks on the original display target page according to the type of the linked electronic teaching materials and the presence of content. Is.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the accompanying drawings, functionally identical elements may be denoted by the same numbers. The attached drawings show specific embodiments and implementation examples based on the principle of the present invention, but these are for understanding the present invention and are not intended to limit the present invention. Not used.

  This embodiment has been described in sufficient detail for those skilled in the art to practice the present invention, but other implementations and configurations are possible without departing from the scope and spirit of the technical idea of the present invention. It is necessary to understand that the configuration and structure can be changed and various elements can be replaced. Therefore, the following description should not be interpreted as being limited to this.

  Furthermore, as will be described later, the embodiment of the present invention may be implemented by software running on a general-purpose computer, or may be implemented by dedicated hardware or a combination of software and hardware.

  In the following description, each information of the present invention will be described in a “table” format. However, the information does not necessarily have to be expressed in a data structure by a table, such as a data structure such as a list, a DB, a queue, or the like. It may be expressed as Therefore, “table”, “list”, “DB”, “queue”, etc. may be simply referred to as “information” to indicate that they do not depend on the data structure.

  In addition, when explaining the contents of each information, the expressions “identification information”, “identifier”, “name”, “name”, “ID” can be used, and these can be replaced with each other. It is.

  Hereinafter, each process in the embodiment of the present invention will be described with each processing unit (program) as a subject (operation subject). However, the program is executed by a processor, and the processing determined by the processor is performed by a memory and a communication port (communication control). Therefore, the description may be based on the processor. A part or all of the program may be realized by dedicated hardware or may be modularized. Various programs may be installed in each computer by a program distribution server or a storage medium.

<System configuration>
FIG. 1 is a diagram showing a schematic configuration of a content display system (also simply referred to as a data processing system) 1 according to an embodiment of the present invention. In the present embodiment, the content display system that executes various processes for displaying the contents of textbooks and auxiliary teaching materials is taken as an example, but the present invention is not limited to these contents and can be applied to digital contents in general.

  The content display system 1 includes a content display device 101 and a search server 103, which are connected via a network 102.

  The content display device 101 is configured by a general computer, and includes a storage device 110 that stores various data, a memory 120 that stores various programs, and a CPU (processor) that reads necessary programs from the memory 120 and processes the data. 130, an input / output device 140 for inputting data and instructions necessary for processing, and outputting processing results, and a search cache 150.

  The search server 103 is a server that answers the position of the corresponding content in the learning material in response to the name inquiry.

  The network 102 is, for example, the Internet, and is used when accessing content on the Internet that is referred to as a hyperlink from the electronic teaching material in the electronic teaching material DB 112 or when inquiring the search server 103 about the position of the content with respect to the name.

  The electronic learning material metadata DB 111 is a database that stores metadata of the electronic learning material stored in the electronic learning material DB 112. Details will be described later (see FIG. 2).

  The electronic teaching material DB 112 is a database that stores various electronic teaching materials. There are various types of electronic teaching materials such as textbooks, auxiliary teaching materials, and dictionaries.

  The display processing unit 121 is a program that executes processing for displaying the content of the electronic teaching material DB 112 as a page.

  The search processing unit 122 is a program that executes processing for searching the electronic teaching material DB 112 for a content corresponding to a name when a hyperlink indicating the name is included in the page.

  The input / output device 140 is, for example, a keyboard, a microphone, or a mouse as an input device, a display, a speaker, a printer, or the like as an output device.

  The search cache 150 is a search cache that stores position information of content indicated by a name. More specifically, in the hyperlink indicated by the name in the text, the content corresponding to the name is searched from the electronic teaching material DB 112 and the position is stored. Details will be described later (see FIG. 3).

<Structural example of electronic teaching material metadata DB>
FIG. 2 is a diagram illustrating a structure example of the electronic teaching material metadata DB 111 according to the embodiment of the present invention.

  The electronic learning material metadata DB 111 includes a learning material name 211, an identifier 212, a subject 213, a type 214, a file path 215, and a search server 216 as configuration items.

  The learning material name 211 is information indicating the name of the learning material. The identifier 212 is information for uniquely identifying and identifying the learning material. In general, it is often indicated by a number called UUID or ISBN.

  The subject 213 is information indicating what subject the teaching material is related to. The type 214 is information indicating the type of learning material, and includes, for example, types such as textbooks, dictionaries, and auxiliary learning materials. The file path 215 is information indicating the file path name of the teaching material in the content display apparatus 101. The search server 216 is information indicating a server name that answers a position in the teaching material corresponding to the name. For example, information indicating a site of a creator (publisher) of a textbook or auxiliary teaching material.

  Note that the electronic teaching material metadata DB 111 may be created and prepared manually when the teaching material is introduced, or the teaching material introduction tool is automatically configured by extracting from the metadata in the teaching material. Also good. For example, information of the identifier 212 is included as metadata called dc: identifier in a file generally called a package document in an electronic book. Similarly, the teaching material name 211, the subject 213, the type 214, and the search server 216 are available.

<Structure example of search cache>
FIG. 3 is a diagram illustrating a structure example of the search cache 150 according to the embodiment of the present invention.
The search cache 150 stores information already acquired from the electronic teaching material DB 112, and has a name 311, a label 312 and a position 313 as configuration items.

  The name 311 is information indicating the link (URN) itself indicated by the name. However, there may be multiple records with the same name.

  The label 312 is information indicating a content label used when there are a plurality of contents corresponding to the “name”. The user decides which of a plurality of contents to select with reference to this label. The position 313 is information indicating the position of the content, and is configured by a file name and the position of the content within the file.

<Example of contents page data>
FIG. 4 is a diagram illustrating a data example of a table of contents page in the electronic teaching material DB 112. The table of contents includes the position of the content in the teaching material in addition to the chapter and title displayed on the display. For example, “3.1 Genji and Taira” in Ch 3, Sec 1 indicates that the file starts from the position indicated by the label chap03_01 in the file unit03.xhtml. “3.1 Genji and Mr. Taira” are visible to the user, but “unit03.xhtml # chap03_01” is information that is not visible to the user. Various information (aliases and common names as will be described later) can be included here to contribute to efficient search.

<Example of text page data>
FIG. 5 is a diagram showing a file that is a source of the text page of the textbook. In FIG. 5, <h1>... </ H1> is an HTML tag indicating a headword, and has six levels (hierarchies) from h1 to h6. The top-level headline is the Edo period, the next-level headings are the establishment of the Edo Shogunate, and the Genroku period. It shows that there is “legal”.

<Processing when there is a hyperlink>
FIG. 6 is a flowchart for explaining processing when there is a hyperlink according to the embodiment of the present invention. Whether or not the processing is presented to the user while leaving link information (information indicating that there is a link destination: for example, an underline attached to a term etc.) in the data of one display target page of the electronic teaching material DB 112 It is for determining.

(I) Step 601
This process is executed for the number of hyperlinks included in the display target page of the electronic teaching material in the electronic teaching material DB 112. That is, the following processing from step 602 to step 606 is executed for each hyperlink.

(Ii) Step 602
The search processing unit 122 accesses the link destination indicated by the link information and checks whether the link destination information exists. For example, when information is placed on a server on the network, the search processing unit 122 actually tries to access to check whether link destination information exists. When the link information indicates a specific page in the textbook or auxiliary teaching material, the search processing unit 122 accesses the electronic teaching material in the electronic teaching material DB 112 and confirms whether the corresponding page exists. Details of this processing will be further described with reference to FIG.

(Iii) Step 603
The search processing unit 122 determines whether a link destination exists and is accessible. If it is accessible (Yes in step 603), the process proceeds to step 604. If access is impossible (No in step 603), the process proceeds to step 605.

(Iv) Step 604
The display processing unit 121 displays the target page on the display while maintaining the link information included in the data of the display target page.

(V) Step 605
The display processing unit 121 deletes the link information included in the data of the display target page, and displays the target page on the display. That is, the target page is displayed by deleting the underline added to the term or the like, or canceling the designation when it is designated to display with a changed color.

(Vi) Step 606
If the hyperlink still exists on the display target page, the process proceeds to the process for the next hyperlink.

<Confirmation processing of existence of link destination: details of step 602>
FIG. 7 is a flowchart for explaining the details of the process (step 602) for confirming whether or not there is information corresponding to the link destination.

(I) Step 701
The search processing unit 122 determines whether the link information (hyperlink) is information indicating a position on the network. That is, the search processing unit 122 determines whether the link information indicates that target information exists in a server connected via a network. If the link information is information indicating a position on the network (Yes in Step 701), the process proceeds to Step 702. If the link information is not information indicating a position on the network (No in step 701), the process proceeds to step 703.

(Ii) Step 702
The search processing unit 122 accesses the link destination server or file indicated by the link information, and checks whether the link destination information exists. That is, the search processing unit 122 tries to access content by connecting to a server via the network (Internet) 102. If you can access it, you have confirmed its existence. If the content cannot be accessed, such as a network failure, server failure, or content not found on the server, the confirmation fails. As a link format indicating content on the Internet, a URL is a typical format, and a format such as http://www.xxx.jp/yyy/zzz.html is used. In this case, it is connected to the server www.xxx.jp to check whether the content yyy / zzz.html is accessible.

(Iii) Step 703
The search processing unit 122 determines whether the link information indicates a file or internal data stored in the content display device 101. If it is a file or internal data in the device 101 (Yes in step 703), the process proceeds to step 704. If it is not a file or internal data in the device 101 (No in step 703), the process proceeds to step 705.

(Iv) Step 704
The search processing unit 122 accesses the corresponding teaching material file and internal data, and confirms that the file or the like exists in the content display device 101. EPUB CFI is a typical link to the inside of an e-book, and the format is textbook.epub # epubcfi (/ 3/2! / 3/8). textbook.epub is the file name, and #epubcfi (/ 3/2! / 3/8) indicates the location of the content in the file. In some cases, an ebook identifier such as uuid: 1234-5678-90abcd is used instead of the file name textbook.epub. In this case, the electronic teaching material metadata DB 111 (FIG. 2) can be confirmed by converting the identifier 212 to the file path 215.

(V) Step 705
If the link information does not indicate a position on the network or a file in the device 101, the search processing unit 122 determines that it indicates “name”, and first searches the search cache 150. It is determined whether or not there is an entry of “name” corresponding to. There may be multiple entries. If there is a corresponding “name” entry (Yes in step 705), the process ends. If there is no corresponding “name” entry (No in step 705), the process proceeds to step 706.

(Vi) Step 706
The search processing unit 122 checks whether there is content corresponding to the name for each electronic teaching material in the electronic teaching material DB 112. That is, the confirmation process is performed to determine whether there are names corresponding to the number of electronic teaching materials. Details of this processing will be further described with reference to FIG.

<Confirmation processing of content corresponding to name: details of step 706>
FIG. 8 is a flowchart for explaining the details of the process (step 706) for confirming the presence / absence of the content corresponding to the name.

(I) Step 801
The processing is executed as many times as the number of electronic teaching materials stored in the storage device 110. That is, the following steps 802 to 809 are executed for each electronic teaching material.

(Ii) Step 802
The search processing unit 122 determines whether a chapter title including “name” exists in the table of contents page of the electronic teaching material to be processed. If there is a chapter title including “name” (Yes in step 802), the process proceeds to step 806. If there is no chapter title including “name” (No in step 802), the process proceeds to step 803.

(Iii) Step 803
The search processing unit 122 determines whether there is an item including “name” in the index page of the electronic teaching material to be processed. If there is an item including “name” (Yes in step 803), the process proceeds to step 806. If there is no item including “name” (No in step 803), the process proceeds to step 804.

(Iv) Step 804
The search processing unit 122 determines whether there is a heading or item including “name” from the body file. If there is a heading or item including “name” (Yes in step 804), the process proceeds to step 806. If there is no item or heading including “name” (No in step 804), the process proceeds to step 805.

(V) Step 805
The search processing unit 122 determines whether there is a description of a chart including “name” with a figcaption tag from the file of the body text. If there is a description of the chart including “name” (Yes in step 805), the process proceeds to step 806. If there is no description of the chart including “name” (No in step 805), the process proceeds to step 807.

(Vi) Step 806
The search processing unit 122 confirms whether there is target content in the item or heading that includes “name”.

  For example, in the case of a table of contents page, in FIG. 4, there are three titles: the beginning of the samurai era, Genji and Taira, and the beginning of the shogunate, from which the title including the name is acquired. When searching by the name Shogunate, “3.2 Beginning of the Shogunate” corresponds, and there is a unit03.xhtml # chap03_02 to which it is pointed, that is, there is an internal file unit03.xhtml in the teaching material file, and the internal file Check if there is a position indicated by chap03_02. If it can be confirmed, the search processing unit 122 adds a record including the name 311 corresponding to the link, the title of the chapter as the label 312 and the position 313 to the search cache 150 (FIG. 3), and the confirmation is successful. . As the label 312, “title” is adopted.

  In the case of the index page, the same processing (content confirmation and addition of records to the search cache 150) as in the case of the table of contents page is executed. Note that “item” is used as the label 312.

  In the case of a headline or item in the text file, the search processing unit 122 acquires content in which “name” is included in the values of the h1 to h6 tags shown in FIG. The record addition process to the search cache 150 is as described above. Note that “heading” is used as the label 312.

  Further, in the case of figcaption, the search processing unit 122 searches for a figcaption tag including “name” as a value, and if found, sets the figure tag including the figcaption as the content indicated by the name. The process for adding a record to the search cache 150 is the same as described above. Note that the value of the figcaption tag is used as the label 312.

(Vii) Step 807
The search processing unit 122 determines whether there is an img or voice tag that includes “name” in the alt attribute value. If “name” is included in the alt attribute value (Yes in step 807), the process proceeds to step 808. If “name” is not included in the alt attribute value (No in step 807), the process proceeds to step 809, and data including “name” does not exist in the target teaching material.

(Viii) Step 808
When the alt attribute value includes “name”, the search processing unit 122 sets the corresponding img or voice tag as the content indicated by “name”. The record addition process to the search cache 150 is as described above. Note that an alt attribute value is used as the label 312.

(Ix) Step 809
If there is the next electronic teaching material, the process proceeds to the processing for that teaching material.

<Link destination information display processing>
FIG. 9 is a flowchart for explaining the details of the link destination information display process which is a process when the user designates a link destination.

(I) Step 901
The search processing unit 122 determines whether the link information specified by the user has one or more link destinations. If there is only one link destination (Yes in step 901), the process proceeds to step 902. If there are a plurality of link destinations (No in Step 901), the process proceeds to Step 903.

(Ii) Step 902
The display processing unit 121 accesses the link destination, acquires information on the link destination, displays the information on the display, and ends the processing.

(Iii) Step 903
When there are a plurality of link destinations, the display processing unit 121 acquires icons and labels corresponding to the types of link destinations, pops them up on the page, and waits for the user to select one.

  FIG. 10 is a diagram illustrating a state where the link destination is displayed in a pop-up manner. In FIG. 10, “Edo Shogunate” is underlined, so that the user knows that there is a link destination, and the screen is displayed when the mouse is clicked or tapped there. Here, two contents are found from the name “Edo Shogunate”, one of which is a textbook and the label is “7.1 Establishment of Edo Shogunate” including the chapter number, the other is an auxiliary teaching material, and the label is the chapter. It is “4.6 Edo Shogunate” including the number. The textbook icon “Label” and label are superimposed on the textbook, and the auxiliary textbook “complement” icon and label are superimposed on the text and displayed in a pop-up.

  The display processing unit 121 stores, in the electronic teaching material metadata DB (FIG. 2), the textbook, auxiliary teaching material, dictionary, and the like that matches the file name portion of the record location 313 in the search cache 150 (FIG. 3). A search is made from a certain file path 215, and it is determined from the type 214 of the record. The label can be obtained directly from the search cache label 312.

(Iv) Step 904
The display processing unit 121 displays the linked content indicated by the icon / label selected by the user, and ends the processing.

<Modification>
(A) Modified example in the case where a plurality of link destinations are found in one electronic teaching material When the process of FIG. 8 is executed, a plurality of link destinations may be found from one electronic teaching material. For example, this is the case where there are names indicated by hyperlinks at multiple locations in the table of contents. There is a form that processes a case where a plurality of link destinations are found, and a form that adopts a form that seems to be more appropriate. As a method of determining appropriateness, there is a method of giving priority to a shorter title or heading when “name” is included. For example, if two titles, “Edo Shogunate” and “Edo Life / Culture” are found for “Edo”, select “Edo Shogunate”. It is. That is, a higher matching degree is selected as a more appropriate one. In addition, there is also a method of searching from the top and selecting the one found first.

(B) Modified example using the guideline In FIG. 8, when searching for contents by “name” as described above, the table of contents, index, heading, description of charts, and supplementary explanations in alt are searched in this order. However, you may use the guidelines. Since the contents of elementary / secondary / higher education are stipulated in the teaching guidelines, depending on the teaching materials, the words indicating the teaching contents / items in the teaching guidelines are embedded in the table of contents or text using div or span tags ( Embedded in a portion that is not visible to the user: for example, “unit03.xhtml # chap03” in FIG. In this case, it is expected that an item or its ID is embedded in the tag attribute, and this may be added to the search target.

(C) Modified example of searching for contents by a plurality of “names” In the above-described embodiment, the number of “names” is limited to one. Even if it is content, it may be missed. For example, the Edo Shogunate is also called the Tokugawa Shogunate, and it does not know which title is used for the title, index, or headline, and it is a case where it is desired to search with multiple names such as “urn: Edo, Tokugawa”.

  Therefore, when it is desired to search for a plurality of names that are the same in one link, it may be possible to use content corresponding to the case where one of the plurality of names matches or includes one of the names.

(D) Modified Example of Content Search Including Subject Information In the process of FIG. 8, all the teaching materials in the electronic teaching material metadata DB 111 (FIG. 2) are searched for content corresponding to “name”.

  However, the format indicating “name” may include not only “name” such as “urn: Edo period” but also “subject” as “urn: society: Edo period”. When the “subject” is included, the processing can be performed at a higher speed by referring to the subject 213 in the electronic teaching material metadata DB 111 of FIG.

(E) Modified Example of Content Search Using Search Server The search for the content corresponding to “name” in FIG. 8 was performed in the content display device 101, but inquires the search server 103 on the network (Internet) 102. The content search may be performed accordingly.

  FIG. 11 is a flowchart for explaining processing for acquiring content storage location information from the search server.

(I) Step 1101
The search processing unit 122 refers to the electronic teaching material metadata DB 111 (FIG. 2) and searches for information on the server to be inquired from the items of the search server 216.

(Ii) Step 1102
The search processing unit 122 determines whether the server information to be inquired has been acquired. If the server information has been acquired (Yes in step 1102), the process proceeds to step 1103. If the server information cannot be acquired (No in step 1102), the process proceeds to step 1106.

(Iii) Step 1103
The search processing unit 122 sends a search request including the search target “name” and the search target “electronic teaching material identifier” to the search server 103 specified in step 1101 to inquire about the storage location of the content.

(Iv) Step 1104
The search processing unit 122 determines whether a search request has been transmitted. If the search request can be transmitted (Yes in step 1104), the process proceeds to step 1105. If the search request cannot be transmitted due to a network trouble or the information of the search server being incorrect (No in step 1104), the process proceeds to step 1106.

(V) Step 1105
The search processing unit 122 determines whether information on the position (storage location) of the content corresponding to “name” has been acquired from the search server 103 as an inquiry result. If the information on the storage location of the content is obtained (Yes in step 1105), the process ends. If the content storage location information is not obtained (No in step 1105), the process proceeds to step 1106.

(Vi) Step 1106
The search processing unit 122 determines that the search has failed, and ends the processing assuming that the corresponding content does not exist.

<Summary>
The present invention appropriately displays link information even when the hyperlink destination cannot be accessed or when there are a plurality of links corresponding to the link destination. This is especially useful for links that show names rather than links that show places.

  In the present invention, the content display device confirms whether the content indicated by the URL indicating the location is accessible. For what is acquired via the network, check whether the content is actually available via the network. For example, in the case of "http://www.foo.jp/bar/baz.html", can you access the computer named www.foo.jp and access the content named bar / baz.html? Check. If it is local rather than via the network, make sure that the content is really there. For example, when referring to the content in an e-book called “book.epub # epubcfi (6/3/2/5)”, there is an e-book file called book.epub, and the EPUB Canonical Fragment Identifier (CFI) Check if there is content indicated by 6/3/2/5 in the notation.

  In addition, the content display device confirms the content corresponding to the “name” specified in the URN from among the electronic teaching materials in the local area. In order to search for a more appropriate content, not just a full-text search, first, a title that matches or includes a word / phrase corresponding to the corresponding “name” is searched from the table of contents to check whether there is content pointed to by the table of contents. Next, if no content corresponding to “name” is found in the table of contents, an item that matches the name or includes the name is searched from the index page, and it is confirmed whether there is content pointed to by the item. If no index is found, a search is made for a text that matches the value of the HTML h1 tag in the text or includes a phrase. If it is not found with the h1 tag, h2, h3, h4, h5, h6 are searched. If the h tag in the text is not found, a chart that matches the value of the HTML figcaption tag or includes a phrase is searched. If not found with the figcaption tag, the HTML tag that matches or is included in the alt attribute value of HTML is searched for.

  Further, in the content display device, when a plurality of link destinations are found, the icon display is changed according to the type of the link destination and the plurality of links are displayed. Types include auxiliary textbooks such as textbooks / dictionaries / dictionaries / map books and glossaries.

  In this way, depending on whether the content of the link destination indicated by the URL (link information) is accessible to the access destination or how many contents of the “name” indicated by the URN exist, the link information is displayed if there is no content. If there are a plurality of contents without displaying, link information corresponding to the type of contents can be displayed. For this reason, the user is not confused because the link destination cannot be accessed. In addition, when there are a plurality of pointing destinations, link information in which the pointing destination types are combined is displayed, so that it is easy to select which link destination is displayed.

DESCRIPTION OF SYMBOLS 1 ... Content display system 101 ... Content display apparatus 102 ... Network 103 ... Search server 110 ... Storage apparatus 111 ... Electronic teaching material metadata DB
112 ... Electronic teaching material DB
120 ... Memory 121 ... Display processing unit 122 ... Search processing unit 130 ... CPU
140: Input / output device 150: Search cache

Claims (10)

A content display device that acquires and displays content via link information indicating that content exists at a link destination,
A memory for storing various programs;
A processor that reads a necessary program from the memory and executes processing;
The processor determines whether the link destination corresponding to the link information is accessible when the link information is present on the display target page, and leaves the link information when the link destination is accessible. A content display device that displays a display target page and deletes the link information and displays the display target page when the link destination is inaccessible. In claim 1,
The display target page is a page of content on a network or content included in an electronic teaching material,
When the link information is content on the network, the processor confirms that the content on the network is accessible, and when the link information is content in the electronic learning material, A content display characterized by confirming existence and determining whether the link destination is accessible by searching for the corresponding content in the electronic teaching material when the link information is indicated by a name apparatus. In claim 2,
When the link information is indicated by a name, the processor uses the electronic teaching material table of contents data, index data, text data of text, explanatory data of charts, and tag data of text using the at least one A content display device characterized by determining whether or not there is the corresponding content by determining whether or not there is an item included in the name. In claim 2,
When the link information is indicated by a name, the processor acquires information of a search server corresponding to the electronic teaching material, transmits the information of the name to the search server, and stores content information corresponding to the name. A content display device that searches for content corresponding to the name by acquiring storage location information. In claim 1,
The display target page is a page of content included in the electronic teaching material,
When the link information specified by the user has a plurality of link destinations, the processor displays information indicating that the plurality of link destinations exist, and prompts the user to select a content. Display device. A content display method for acquiring and displaying content via link information indicating that content exists at a link destination,
A step of reading a necessary program from a memory and executing a process to determine whether or not the link information exists in a display target page;
Determining whether the link destination corresponding to the link information is accessible when the processor determines that the link information exists on the display target page;
When the processor determines that the link destination is accessible, the display target page is displayed with the link information remaining, and when the link destination is determined to be inaccessible, the link information is deleted. And processing to display the display target page;
A content display method characterized by comprising: In claim 6,
The display target page is a page of content on a network or content included in an electronic teaching material,
When the link information is content on the network, the processor confirms that the content on the network is accessible, and when the link information is content in the electronic learning material, A content display characterized by confirming existence and determining whether the link destination is accessible by searching for the corresponding content in the electronic teaching material when the link information is indicated by a name Method. In claim 7,
When the link information is indicated by a name, the processor uses the electronic teaching material table of contents data, index data, text data of text, explanatory data of charts, and tag data of text using the at least one A content display method, wherein it is determined whether or not there is the corresponding content by determining whether or not there is an item included in the name. In claim 7,
When the link information is indicated by a name, the processor acquires information of a search server corresponding to the electronic teaching material, transmits the information of the name to the search server, and stores content information corresponding to the name. A content display method characterized in that content corresponding to the name is searched by acquiring storage location information. In claim 6,
The display target page is a page of content included in the electronic teaching material,
Further, when the link information specified by the user has a plurality of link destinations, the processor has a step of displaying information indicating that the plurality of link destinations exist and prompting the user to select A content display method characterized by the above.

Images