JP2006337490A - Content distribution system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a content distribution system wherein an existing content can be utilized without modification and a learner can efficiently achieve an improved learning effect. <P>SOLUTION: The content distribution system comprises a learning content information providing server 120, and a learner's operation terminal 100. The learning content information providing server 120 is provided with a content list output means (step S212) which creates, in accordance with the input learning level, a content list including difficulty of each of a plurality of visual and audio contents stored in a video sound distribution server 130 and relevant level information, and outputs the content list to the learner's operation terminal 100. The learner's operation terminal 100 is provided with a distribution requesting means (step S205, S207) which requests the servers 120 and 130 for distribution of a specific content selected from the content list by the input of a learner, and a synchronization control means which selectively outputs, in synchronization with reproduction of the main content distributed from the video sound distribution server 130, a corresponding sub content distributed from the learning content information providing server 120. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a content distribution system for learning foreign languages using content such as medical, legal, and sports.

  For example, when learning a foreign language, each learner goes to various classrooms, and the instructor and the learner have a one-to-one conversation in the classroom, or one instructor and a plurality of learners. It is common to learn by talking between them.

  However, in such a form, restrictions on time and place are large, and it is difficult to continue learning according to the schedule as intended. Therefore, a video conference system in which a plurality of terminals equipped with a TV camera are connected to each other via a communication network is also used. By using the video conference system, home-based learning can be realized, and time and place restrictions are reduced, so many learners such as students and adults can easily learn.

  In addition, by preparing a teaching material in which video and audio necessary for learning are recorded in advance on a recording medium such as a DVD, and reproducing this teaching material using a predetermined playback device, each learner can individually speak a foreign language. There is also a learning system that can learn such things.

  For example, the technology disclosed in Patent Document 1 proposes that a language learning system is realized by a personal computer by adding language learning auxiliary software separately created to digital movie software.

JP 2001-22265 A

  When the technique of Patent Document 1 is adopted, the existing digital movie software can be used as it is for learning without modification, so that it is very easy to create a language learning system. However, since existing digital movie software has not been designed for learning from the beginning, there are many cases where the expected learning effect cannot be obtained.

  For example, if it is difficult to display translated sentences alone, the language level of the content contained in the digital movie software for learning is too high compared to the learner's proficiency level. The learning effect is not improved because the content is too difficult for the user. Conversely, if the language level of the content included in the digital movie software is too low compared to the learner's proficiency level, most of the content that the learner does not need to learn already exists. The learning effect is not improved.

  The present invention has been made in view of the above circumstances. For example, a content distribution system that makes it possible to use existing content such as digital movie software without modification and to efficiently increase the learning effect. The purpose is to provide.

  The content distribution system of the present invention includes a main content distribution server that selectively provides a plurality of viewing contents including at least video as main contents, a character string used for learning when viewing the main contents, and A sub-content distribution server that provides information composed of at least one of audio as sub-contents, and a learner operation terminal having a function of receiving and playing back the main content and sub-content and receiving an input operation from a learner And a content list including level information related to the difficulty level of each of the plurality of viewing contents stored in the main content distribution server according to the learning level input to the operation terminal for learners Content list output means created and provided to the learner's operation terminal; A distribution request means for requesting the main content distribution server and the sub-content distribution server to distribute the specific content selected by the learner's input from the content list, and the main content on the learner operation terminal. Synchronous control means for selectively outputting information of the corresponding sub-content distributed from the sub-content distribution server in synchronism with the reproduction operation of the main content distributed from the distribution server.

With this configuration, the learner downloads the main content and the sub content from the main content distribution server and the sub content distribution server to the learner's operation terminal via the predetermined communication network, and synchronizes the main content and the sub content with each other. It is possible to learn content such as language by playing. As the main content, for example, existing content including video and audio, such as digital movie software, may be used. Sub-contents can be created based on text data such as subtitle information that is created at the same time that the main content is created. The content list output means creates a content list including level information related to the difficulty level of each of the plurality of viewing contents according to the learning level input to the learner operation terminal, and the learner operation Provide to the terminal. The distribution request means requests the main content distribution server and the sub-content distribution server to distribute specific content selected by the learner's input from the content list. The synchronization control means selectively outputs information of the corresponding sub-content distributed from the sub-content distribution server in synchronization with the reproduction operation of the main content distributed from the main content distribution server.
Accordingly, when there are many main contents to be learned on the main content distribution server, the level information is suitable for the actual learning level of the learner from the content list including the level information of each main content. It is possible to select and view the optimum content that can be considered. As a result, content suitable for the learning level of the learner is learned, so that efficient learning is realized.

  In the above content distribution system, the content list output unit acquires the difficulty level for each word of all character strings appearing for each main content and the appearance frequency of each word, and the difficulty level with the highest appearance frequency. The level information of the corresponding content is determined from the above, and the content list is created according to the magnitude of the correlation between the learning level input to the learner's operation terminal and the level information of each main content.

  With this configuration, since the level information of each content is determined based on the distribution of the difficulty level and appearance frequency of a large number of words included in each content, the difficulty level for each content can be appropriately expressed as level information. Can do. In addition, since the content list is created according to the magnitude of the correlation between the input learning level and the level information of each main content, for example, by outputting a content list in which a plurality of contents are arranged in the order of large correlation, the learner Can easily find the best content for their learning.

  Further, in the above content distribution system, the content list output means acquires the difficulty level and the appearance frequency of each word in each of a plurality of specialized fields for each word of all character strings appearing for each main content. The difficulty level having the highest appearance frequency is generated for each specialized field as the difficulty level by field, and the content list includes the level information and the difficulty level by field for each content.

  With this configuration, since not only the general difficulty level of each content but also the difficulty level for each specialized field can be grasped from the content list, the learner can easily find the optimal content for his / her own learning.

  According to the present invention, it is possible to provide a content distribution system that makes it possible to use existing content such as digital movie software without modification and to efficiently increase the learning effect.

  One embodiment of the content distribution system of the present invention will be described with reference to FIGS.

  FIG. 1 is a block diagram showing a configuration example of a learning content distribution system according to an embodiment of the present invention. FIG. 2 is a sequence diagram showing the operation of the learning content distribution system. FIG. 3 is a block diagram showing the configuration of the learning content information DB. FIG. 4 is a schematic diagram showing a specific configuration example of the content information table. FIG. 5 is a flowchart showing a process for creating the learning content information DB. FIG. 6 is a schematic diagram showing a configuration example of a content subtitle information file. FIG. 7 is a schematic diagram showing a configuration example of a chapter information table file. FIG. 8 is a flowchart showing content list creation processing. FIG. 9 is a diagram showing a specific example of the content list displayed on the screen. FIG. 10 is a block diagram illustrating a configuration example of the operation terminal for learners. FIG. 11 is a graph showing a specific example of characteristic curves of a plurality of contents. FIG. 12 is a front view showing a specific example of the screen display of the learner's operation terminal.

  As shown in FIG. 1, the learning content distribution system of the present embodiment includes a learner operation terminal 100, a learning content information providing server 120, and a video / audio distribution server 130. In this example, two learner operation terminals 100 a and 100 b are connected to the learning content information providing server 120 and the video / audio distribution server 130 via the Internet 110. In this example, it is assumed that the learner learns a foreign language, but the present invention can also be applied to the case of learning knowledge in other fields such as medicine, law, and sports.

  The learner learns by operating one of the learner operation terminals 100 and viewing the learning content including video and audio. Content information necessary for learning is distributed from the learning content information providing server 120 and the video / audio distribution server 130 to the operation terminal 100 for learners.

  Each learner's operation terminal 100 is provided with an operation keyboard and a remote controller scanning device, a display device, and a speaker so that the content can be viewed and learned.

  The video / audio distribution server 130 is provided for distributing main content information including video and audio to the learner's operation terminal 100 operated by the learner. Actually, the video / audio distribution server 130 distributes the content data read from the predetermined recording medium by the video / audio disk device 131. As a recording medium for holding content, for example, a DVD disk or the like may be used. In addition, as content that is actually used, it is possible to use image and audio data composed of existing movies and a large number of still images. In addition, the content to be distributed can be paused, fast-forwarded, or rewound in accordance with instructions from the learner's operation terminal 100 during playback.

  The learning content information providing server 120 provides information necessary for learning other than the information distributed by the video / audio distribution server 130 to the operation terminal 100 for learners. Specifically, it is associated with a content list to be used as a reference when deciding content to be selected from a large number of contents stored in the video / audio distribution server 130 and main content distributed by the video / audio distribution server 130. Deliver a vocabulary list about the given words. As shown in FIG. 1, the learning content information providing server 120 holds a learning content information DB (database) 121 and a learning target vocabulary list 122. The content list and learning target vocabulary list 122 are created based on the learning content information DB 121.

  Next, an outline of the operation of the learning content distribution system shown in FIG. 1 will be described with reference to FIG.

  In step S201, the learner's operation terminal 100 accepts an input from a keyboard or a remote controller as a learner's learning level. Here, as the learning level input by the learner, for example, a learner's own numerical value determined in a standardized environment, such as a learner's individual score in the TOEIC (registered trademark) test or a target value thereof, is used. Is desirable.

  In step S <b> 202, the learner operation terminal 100 transmits the input learning level information to the learning content information providing server 120.

  The learning content information providing server 120 receives the learning level input from the learner's operation terminal 100 in step S210, and uses this learning level to create a content list in the next step S211. The created content list is transmitted from the learning content information providing server 120 in step S212.

  The content list transmitted here is, for example, a list in which names representing each of a plurality of contents and information on learning levels are arranged as shown in FIG. 4. It is determined that the one with a small difference from the learning level input to 100 is arranged at the top. Therefore, in general, efficient learning is realized by learning the content located at the top of the content list.

  The learner's operation terminal 100 receives the content list transmitted from the learning content information providing server 120 in step S203, and displays this list of content lists on the screen of the learner's operation terminal 100.

  In step S204, the learner's operation terminal 100 receives an input from the learner, and selects one content from the displayed content list. In step S205, the learner's operation terminal 100 transmits a content number or name representing the specific content selected in step S204 to the learning content information providing server 120.

  When the learning content information provision server 120 receives the content number from the learner's operation terminal 100 in step S213, the learning target vocabulary list 122 associated with the corresponding content is extracted from the learning content information DB 121 in the next step S214. The learning target vocabulary list 122 is transmitted to the learner operation terminal 100.

  The learning target vocabulary list 122 is generated based on the caption information attached to the corresponding content, and various character string information, appearance time information included in the caption information, and the meaning of each word constituting the character string. Contains information that represents

  In step S206, the learner's operation terminal 100 receives the information of the learning target vocabulary list 122 from the learning content information providing server 120 and expands it on the internal memory so that the received content can be easily referred to.

  The learner's operation terminal 100 requests the video / audio distribution server 130 to distribute the content selected in step S207, receives the video and audio data transmitted from the video / audio distribution server 130, and receives the video and audio data. Play on. Further, each word included in the subtitles temporally corresponding to the main content being reproduced and information representing the meaning thereof are superimposed on the screen according to the input operation and displayed on the OSD (On Screen Display).

  When reproducing the main content in step S207, depending on the learner's proficiency level for each word, a specific word is selected, the reproduction of the main content is paused, the content is rewound, The learner performs an input operation so as to fast-forward the content or repeatedly reproduce the content. The learner's operation terminal 100 records the contents of such learner's input operation and the position (time) in the content as a history, and uses it to estimate the learner's proficiency level.

  When the reproduction position reaches the end of the content to be learned, or proceeds to the next step S208 according to the learner's end operation. In step S208, the learner's understanding level and re-learning index are obtained and displayed for each chapter of the content based on the result of statistical processing related to the history of input operations during learning. That is, the position (chapter) to be re-learned in the content that has been learned is presented to the learner.

  When a request for re-learning is made by the learner's input operation, the process returns from step S209 to step S207, and the learning sequence is performed again. That is, for the same content as the content learned last time, the video / audio data and the word vocabulary are displayed from the selected chapter to fix the vocabulary.

  Next, the learning content information DB 121 provided in the learning content information providing server 120 will be described in detail.

  As shown in FIG. 3, the learning content information DB 121 includes a content information table 200, a learning target word table file 201, and a chapter information table file 202.

  For example, as shown in FIG. 4, the content information table 200 includes information including content names, learning levels, and learning levels for each specialized field (specialized A, specialized B, specialized C, specialized D). Hold every time. The learning level indicates the level (difficulty) estimated based on the vocabulary of the words included in the corresponding content, and the learning level for each specialized field is estimated based on the vocabulary related to the specialized term that is an attribute of the vocabulary. Level (difficulty level).

  The learning target word table file 201 and the chapter information table file 202 are held in association with respective contents.

  The learning level for each content can be estimated as follows, for example. That is, a difficulty level is assigned to each word included in the content, and the level may be determined from the distribution of the appearance frequency of the words for each difficulty level. For example, it can be estimated that the content having the highest appearance frequency of words at difficulty level 500 has a lower difficulty level than the content having the highest appearance frequency of words at difficulty level 700.

  Similarly, for specialized fields, content can be divided into levels by assigning difficulty to specialized terms.

  The above-described learning content information DB 121 can be created by performing a process as shown in FIG. Actually, when this database is created, it can be efficiently created by utilizing subtitle data and chapter information used when creating a disc such as a DVD video.

  In this example, it is assumed that a database is created using content subtitle information file 450 configured as shown in FIG. 6 as subtitle data. As shown in FIG. 6, the content subtitle information file includes start time, end time, subtitle information, and display position data for each subtitle information that appears sequentially in time series.

  In step S400 of FIG. 5, a large number of subtitle information described in time series in the content subtitle information file 450 is sequentially read. In the next step S401, the character string is decomposed into words for each caption information read in step S400. For example, when subtitle information “This is a car” in the content subtitle information file 450 shown in FIG. 6 is processed, the words “This”, “is”, “a”, and “car” are decomposed.

  In step S402, for each word extracted in step S401, a word vocabulary database (word dictionary) prepared in advance for acquiring the information is searched. This word vocabulary database holds information representing the meaning, difficulty (learning level) of each word, and difficulty for each specialized field. By this search, the semantic information, the learning level, and the learning level information for each specialized field are accumulated as the learning target vocabulary list 122 for each word of the caption information.

  In step S403, it is checked whether or not the processing of all subtitle information in the content subtitle information file 450 has been completed. If unprocessed subtitle information remains, the process returns to step S400 and the above processing is repeated and completed. In this case, the process proceeds to the next step S404.

  In step S404, based on the contents of the learning target vocabulary list 122 created by the above processing, a general learning level in units of contents and a learning level for each specialized field are estimated. For example, if the words constituting all subtitle information included in the content are represented in a graph with the learning level as the horizontal axis and the appearance frequency as the vertical axis, a characteristic curve similar to FIG. 11 is obtained. Therefore, for example, the learning level at which the appearance frequency is maximum in this curve can be regarded as the learning level representing the characteristics of the content. A content information table 200 as shown in FIG. 4 is created using the learning level information estimated by this processing.

  In the next step S405, the learning level for each chapter (chapter) is specified based on the learning level for each content estimated in step S404, the contents of the learning target vocabulary list 122 and the contents of the chapter information file 450. To do. The chapter information file 450 holds chapter information for distinguishing the start time, the end time, and its area for each chapter of the content, as shown in FIG. In step S405, the learning level is estimated for each chapter based on the learning level of each word appearing during the display period of each chapter. The estimated learning level is added to the contents of the chapter information file 450.

  Next, creation of a content list processed by the learning content information providing server 120 in step S211 of FIG. 2 will be described in detail.

  In this case, the learning content information providing server 120 executes the process shown in FIG. In step S500, the content information table 200 (see FIG. 4) is referred to, and the learning level for each content related to a large number of contents (all contents that can be distributed by the audiovisual distribution server 130) and the learning for each specialized field of each content. Read level information.

  In step S501, content suitable as a learning target is listed from a large number of contents read as candidates in step S500. Specifically, a content having a small difference between the learning level of each content read in step S500 and the learning level input to the learner's operation terminal 100 in step S201 in FIG. 2 is extracted as a content suitable for learning. Furthermore, a content list is a list in which content is arranged in ascending order of difference between the learning level of each content and the learning level input to the learner's operation terminal 100 in step S201 of FIG.

  In step S502, the content list created in step S501 is converted into a file for transmission.

  The content list file created by the learning content information providing server 120 is transmitted in step S212 in FIG. 2, and the learner's operation terminal 100 receives the file in step S203. Then, the learner's operation terminal 100 displays a content list on the screen as shown in FIG. 9, for example.

  For example, assuming that the learning level input to the learner's operation terminal 100 in step S201 is “500”, the difference between the learning level “520” of the content “ABC001” illustrated in FIG. 9 is “20”. Since the difference between the content “ABC002” and the learning level “580” is “80”, the content “ABC001” has a smaller difference. Therefore, in this case, as shown in FIG. 9, the content “ABC001” is displayed higher than the content “ABC002”. For this reason, the learner can easily select the content “ABC001” suitable for his / her learning from a large number of contents.

  Next, the configuration of each learner's operation terminal 100 in the learning content distribution system of the present embodiment will be described with reference to FIG. As shown in FIG. 10, each learner's operation terminal 100 includes a keyboard 600, a remote control transmission unit 601, a communication processing unit 602, a remote control reception processing unit 603, a system ROM 604, a system CPU processing unit 605, and a data memory unit 606. , Demux processing unit 607, video decoding processing unit 608, audio decoding processing unit 609, vocabulary information display processing unit 610, video buffer 611, DA converter 612, video display unit 613, speaker unit 614, memory card IF unit 615, An external memory card 616 is provided.

  The keyboard 600 and the remote control transmission unit 601 are used when a learner performs an input operation for learning. The video display unit 613 is a device capable of displaying content video as a two-dimensional image, such as a liquid crystal monitor. The speaker unit 614 is provided for outputting audio of content.

  When the learner operates the keyboard 600 and the remote control transmitter 601, the sequence as shown in FIG. 2 is executed, and the video / audio distribution server 130 distributes the video and audio of the content to the learner's operation terminal 100. . The learner's operation terminal 100 outputs the vocabulary information of the content word received from the video / audio distribution server 130 and the video data of the content received from the video / audio distribution server 130 to the video display unit 613 as video signals. The audio data is output from the speaker unit 614 as an audio signal. This provides the learner with video and audio information.

  Data distributed from the learning content information providing server 120 and the video / audio distribution server 130 is sent to the system CPU processing unit 605 via the communication processing unit 602, and the vocabulary information of the word displayed as the OSD is the vocabulary information display processing unit. 610, the video / audio data is sent to a Demux processing unit 607 for separating the video data and the audio data, respectively, and the video signal is a video buffer 611 and the audio signal is a DA converter while synchronizing with each other via the system CPU processing unit 605 612 is output.

  The video and audio content distributed by the video / audio distribution server 130 and reproduced by the learner's operation terminal 100 includes time information indicating the current reproduction position, and subtitle information used by the learning content information providing server 120. Since time information is also included for vocabulary information of words configured based on subtitle information and subtitle information, it is possible to synchronize temporally the main content that is video or audio and the secondary content that is a learning word or the like it can.

  When learning a foreign language or the like, it is desirable to provide content that has a learning range curve as shown in FIG. That is, the highest level of appearance frequency of words appearing in the content for learning is controlled to be close to the learning level of the learner input in step S201 of FIG. 2, and as the distance from the learning level of the learner increases, It controls so that the appearance frequency of the word corresponding to the level of becomes low.

  Each word of information distributed from the learning content information providing server 120 is assigned a difficulty level. The learner's operation terminal 100 controls the appearance frequency of each word to change in accordance with the learning level input by the learner and the difficulty level of each word.

  For example, a learner with a learning level of 500 points is controlled so that the appearance frequency of a word with a difficulty level of 500 points is the highest, and a learner with a learning level of 700 points has a difficulty level of 700 points. Control so that the frequency of the word appears highest.

  The vocabulary information display processing unit 610 estimates the range of the learner's learning level based on the learning range determination curve as shown in FIG. 11 and the learning level input from the learner. According to this range, the foreign language words and vocabulary to be presented to the learner are automatically narrowed down from the many words that can be output. In the character information representing the word and meaning output as a result of this processing, the corresponding character code is converted into a character pattern by the character generator and supplied to the video buffer 611 as an OSD signal.

  Accordingly, words and meanings can be displayed on the screen of the video display unit 613 together with video content such as moving images. A specific example of a display screen displayed on the video display unit 613 is shown in FIG. In the first example of FIG. 12A, the general word “CAR” and the meaning “car” of the related subtitles are superimposed and displayed as character information with the content including the video as the background. In the second example of FIG. 12B, character information for prompting selection of whether to display a general word or a specialized word as a learning word is superimposed on the content video. it's shown.

  The learner's operation terminal 100 shown in FIG. 10 includes a memory card IF unit 615 as an interface for connecting an external memory, and the external memory card 616 is detachable. Therefore, if the data generated by the learner's operation terminal 100 is stored in the external memory card 616, the data can be carried only by the external memory card 616. Therefore, even when the same learner uses the plurality of learner operation terminals 100 properly, the same data can be referred to. As data stored in the external memory card 616, words that the learner does not know at the time of learning, words that the learner wants to reconfirm later, and data representing the meaning of each word can be considered.

  In addition, about the structure and operation | movement of the operation terminal 100 for learners, you may mount the following functions further.

(1) When only a main content usually composed of video and audio is reproduced on the learner's operation terminal 100, display of words and meanings is suppressed, and a predetermined input operation from the learner is detected The sub-content information corresponding to the content of the main content being played back is controlled to be superimposed on the main content video and displayed on the screen of the learner's operation terminal 100.

(2) The main content that normally appears continuously such as a movie composed of video and audio is continuously played back, and the main content is temporarily played when a predetermined input operation from the learner is detected. In addition to the stop, control is performed so that the information of the sub-content corresponding to the content of the main content being reproduced is superimposed on the video of the main content and displayed on the screen of the learner's operation terminal 100.

(3) While continuously playing back the main content composed of video and audio, the learner's proficiency level is checked for each sub-content word that has a corresponding relationship with the content of the main content being played back, and the proficiency level is predetermined. Playback of the main content is temporarily stopped when the following word appears.

(4) When the reproduction of the main content is paused, if there is a predetermined input operation from the learner, the main content in the vicinity of the stopped scene is repeatedly reproduced, and a word that is a sub-content if necessary And meaning information are displayed in layers.

(5) The input operation from the learner is detected and stored during the reproduction operation of the main content composed of video and audio, and the proficiency level for each area of the main content and the sub-content is determined from the timing when the input operation is detected. It recognizes, displays the proficiency level for each area of the main content or sub-content, and controls to reproduce the main content for each selected area.

(6) A list of sub-content words corresponding to each timing at which an input operation from a learner is detected during playback of main content composed of video and audio, and semantic information indicating the meaning of each word are associated with each other Control is performed so that the information is automatically output as, for example, a text file after the reproduction of the main content is completed.

  When the learning content distribution system of the present embodiment is used as a foreign language learning system, the learner can easily select the optimum content for his / her learning level based on the content list transmitted from the learning content information providing server 120. You can choose. In addition, by automatically displaying foreign language words and vocabulary delivered according to the language learning level of the learner, the learner can select the learning content that is most suitable for him, and the learner can watch the selected content while viewing it. It is also possible to automatically display foreign language words that would be unknown. Therefore, as in the case of using a conventional system, it is possible to omit the trouble of temporarily stopping the reproduction of the video and audio and searching the dictionary by itself, thereby improving the learning efficiency.

  For the basic data of content and words to be learned, subtitle information and chapter information created in the process of creating optical discs such as movie DVDs that are generally sold can be used. Since it is possible to save the trouble of creating teaching materials for video and audio and text data, a learning environment can be prepared at a low cost.

  In the above explanation, it is assumed that the displayed content is a foreign language word, but it is also used to learn various other technical terms such as explanations of other medical, legal, and sports rules. it can.

  As described above, by using the content distribution system of the present embodiment, the learner can easily select the optimum content for his / her learning based on the content list distributed from the server side, and the efficiency Learning becomes possible. In addition, it is possible to automatically display the vocabulary of foreign language words that the learner may not know while appreciating the content selected by the learner. The trouble of searching for can be omitted. Therefore, it can be used as a learning content distribution system that effectively presents vocabulary information of foreign language words according to the learner's learning level, in particular in synchronization with audio signals and video signals of a predetermined language.

  The present invention makes it possible to use existing contents such as digital movie software without modification, and has an effect of efficiently increasing the learning effect. For example, foreign languages, medical care, It is useful as a content distribution system that distributes content that can be used when learning laws and sports.

The block diagram which shows the structural example of the learning content delivery system which concerns on embodiment of this invention. Sequence diagram showing the operation of the learning content distribution system of the present embodiment The block diagram which shows the structure of the content information DB for learning in this embodiment Schematic diagram showing a specific configuration example of the content information table in the present embodiment The flowchart which shows the process for producing the content information DB for learning in this embodiment Schematic diagram showing a configuration example of a content subtitle information file in the present embodiment The schematic diagram which shows the structural example of the chapter information table file in this embodiment Flowchart showing content list creation processing in the present embodiment The figure which shows the specific example of the content list displayed on the screen in this embodiment The block diagram which shows the structural example of the operation terminal for learners in this embodiment The graph which shows the specific example of the characteristic curve of the some content in this embodiment The figure which shows the specific example of the screen display of the operation terminal for learners in this embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Operation terminal for learners 110 Internet 120 Learning content information provision server 121 Content information DB for learning
122 learning target vocabulary list 130 video / audio distribution server 131 video / audio disk device 200 content information table 201 learning target word table file 202 chapter information table file 600 keyboard 601 remote control transmission unit 602 communication processing unit 603 remote control reception processing unit 604 system ROM
605 System CPU processing unit 606 Data memory unit 607 Demux processing unit 608 Video decoding processing unit 609 Audio decoding processing unit 610 Vocabulary information display processing unit 611 Video buffer 612 DA converter 613 Video display unit 614 Speaker unit 615 IF unit for memory card 616 External memory card

Claims (3)

A main content distribution server for selectively providing a plurality of viewing contents including at least video as main content;
A sub-content distribution server that provides, as sub-contents, information composed of at least one of a character string and audio used for learning when viewing the main content;
A learner operation terminal having a function of receiving and playing back the main content and subcontent and receiving an input operation from a learner;
A content list including level information related to the difficulty level of each of the plurality of viewing contents stored in the main content distribution server is created according to the learning level input to the operation terminal for learners, and the learning Content list output means to be provided to the operator operation terminal;
Distribution request means for requesting the main content distribution server and the sub-content distribution server to distribute the specific content selected by the learner's input from the content list;
Synchronization that selectively outputs information of the corresponding sub-content distributed from the sub-content distribution server in synchronization with the reproduction operation of the main content distributed from the main content distribution server on the learner operation terminal A content distribution system comprising: control means. The content distribution system according to claim 1,
The content list output means obtains the difficulty level for each word of all character strings appearing for each main content and the appearance frequency of each word, determines the level information of the corresponding content from the difficulty level with the highest appearance frequency, The content distribution system which creates the said content list according to the magnitude | size of the correlation with the learning level input into the said operation terminal for learners, and the level information of each main content. The content distribution system according to claim 2,
The content list output means obtains the difficulty level and the appearance frequency of each word for each word of all character strings appearing for each main content, and the difficulty with the highest appearance frequency for each specialized field A content distribution system that generates a degree as a difficulty level by field, and includes the level information and the difficulty level by field for each content in the content list.

Images