KR102685137B1 - System for providing korean as a second language education service - Google Patents

Abstract

A Korean language education service provision system is provided, which outputs at least one step-by-step content containing text, images, and voices for learning speaking skills, compares them when the user's voice utterance is recognized, and proceeds to the next step to learn grammar. Outputs the stem, Vst (Verb Stem), outputs the alphabet segment of the word to which Vst is attached, outputs grammatical discrimination standards for distinguishing positive or negative vowels, and outputs grammatical discrimination standards and sentence patterns sequentially step by step. Voice utterances corresponding to Korean utterances uttered by the user terminal and direct teaching method are set as the first stage, voice utterances that convey meaning in the user's native language by the grammatical teaching method are set as the second stage, and parenthetical utterances are set as the second stage. The speech education department sets the voice utterance made by the Tease (Parentese) speech method as the third stage, and sets the fourth stage to return to the first stage and restart the first stage, and the Vst (Verb), which is the stem included in each sentence. Stem) is designated separately, the output of each sentence and stem is set as the first stage, the output of the alphabet segment of the word to which Vst is attached is set as the second stage, and among the grammatical discrimination criteria, positive and negative vowels are labeled. Education that includes a grammar education department that sets the user terminal to output in the third stage after storing it, labels and stores the sentence types to distinguish them, and then sets them to output in the fourth stage on the user terminal. Includes service provision servers.

Description

Korean education service provision system{SYSTEM FOR PROVIDING KOREAN AS A SECOND LANGUAGE EDUCATION SERVICE}

The present invention relates to a Korean language education service provision system and provides a platform for teaching systematic grammar and speaking skills to foreigners learning Korean as a second language.

Currently, there are many international students of various nationalities in Korea, and their purposes for studying Korean are diverse. Accordingly, Korean language education for foreign learners must be realized in various ways, but most Korean language education for these students is conducted using communication-centered teaching methods. If the teaching method in the past was the grammar-translation teaching method, recently, the teaching method that focuses on fluency and smooth communication has become dominant. Looking at the Korean phonological system, phonemes are located in the initial, medial, and final consonants, and at the syllable level, they are composed of word-initial, word-middle, and word-final sounds. Therefore, in the case of polysyllables, final consonants or initial sounds are influenced by surrounding phonemes, resulting in phoneme changes. While languages like English are written horizontally, producing final consonants like Korean can be difficult for foreigners.

At this time, a platform that connects instructors and learners online for foreigners learning Korean as a second language was researched and developed. In this regard, the prior art, Korea Public Utility Model No. 2021-0000263 (February 3, 2021) In Korean Patent Publication No. 2021-0003326 (published on January 12, 2021), native Korean instructors living in Korea provide one-on-one video education services through an optimized solution for foreigners who want to learn Korean. , constructing a learning content database specialized for Korean language education and teaching through full sentence correction, registering a user by inputting user information including the first language of the user terminal, and using the user information of the user terminal and at least the previously stored information. Compare and match the instructor information of one instructor terminal, assign users by transmitting user information to the matched instructor terminal, and form a channel between the user terminal and the instructor terminal at the speaking time within the preset curriculum to transmit and receive data. , a configuration that allows a user terminal to output at least one content included in a preset curriculum in synchronization with time is disclosed.

However, because most languages have short vowels, which are the standard vowels for vowel squareness, the acoustic characteristics of vowels are different in each language-producing country, and even if the same English is used, the pronunciation in each country is different. Vowels accompany consonants to convey pronunciation and distinguish speech sounds based on differences in their resonance frequencies. Therefore, in the case of vowels that do not exist in a foreigner's native language, it is difficult to even perceive the resonance frequency, and similar vowels are used based on their native language pronunciation. It is calculated. Therefore, foreigners' production of Korean pronunciation is based on the phonological characteristics of their native language, which interferes with perceiving and understanding the phonological characteristics of Korean. Accordingly, research and development of a platform that can teach speech and grammar using various teaching methods and speaking methods is required.

In one embodiment of the present invention, when teaching speaking skills, the first step is a direct teaching method that uses Korean speech, the second step is a grammatical teaching method that conveys meaning, and the third step involves parents speaking slowly to their children with an exaggerated intonation. Parentese speech is used, and in the fourth stage, the student returns to the first stage and finishes with the first speech method, which is a direct teaching method, to learn the speaking method. In grammar, the stem (stem) is learned in the first stage. Verb Stem), perform alphabet segmentation of words with stems in the second step, distinguish positive and negative vowels, which are grammatical discrimination standards, in the third step, and learn the discrimination standards and sentence patterns in the fourth step. We can provide a method of providing Korean language education services that teaches you to learn the structure and allows you to analyze the structure. However, the technical challenge that this embodiment aims to achieve is not limited to the technical challenges described above, and other technical challenges may exist.

As a technical means for achieving the above-described technical problem, one embodiment of the present invention outputs at least one step-by-step content including text, images, and voice for learning speaking skills, and compares the user's voice utterance when it is recognized. Proceed to the next step, output Vst (Verb Stem), which is the stem for learning grammar, output the alphabet segment of the word to which Vst is attached, output grammatical discrimination standards to distinguish between positive and negative vowels, A user terminal that sequentially outputs grammatical discrimination standards and sentence patterns step by step and a voice utterance corresponding to a Korean utterance uttered through a direct teaching method is set as the first step, and the meaning is conveyed in the user's native language by a grammatical teaching method. The speech education department sets the vocal utterance as the second stage, sets the vocal utterance produced by the Parentese speech method as the third stage, and sets the fourth stage to return to the first stage and restart the first stage. , Vst (Verb Stem), which is the stem included in each sentence, is separately specified, the output of each sentence and stem is set to the first stage, and the output of the alphabet segment of the word to which Vst is attached is set to the second stage, Among the grammar discrimination criteria, positive vowels and negative vowels are labeled and stored, then set to be output in the third step on the user terminal, and labeling is performed to distinguish sentence types, which are the form of sentences, and stored, and then the user terminal is set to output in the fourth step. It includes an education service providing server including a grammar education department that is set to be output as.

According to one of the above-described problem-solving means of the present invention, when teaching speaking skills, the first step is a direct teaching method of speaking Korean, the second step is a grammatical teaching method that conveys meaning, and the third step is a parent-child teaching method. Parents learn to speak slowly with an exaggerated intonation, and in the fourth stage, they return to the first stage and finish with the first speaking method, which is a direct teaching method. In grammar, In the first step, the stem (verb stem) is distinguished, in the second step, the alphabet segment of the word with the stem is performed, in the third step, positive and negative vowels, which are the grammatical discrimination standards, are distinguished, and in the fourth step, It teaches you to learn the structure of discrimination criteria and sentence patterns, and allows you to analyze the structure.

1 is a diagram for explaining a Korean language education service provision system according to an embodiment of the present invention.
FIG. 2 is a block diagram illustrating an education service providing server included in the system of FIG. 1.
FIG. 3 is a diagram illustrating an example of a paused reading function performed in the reading practice unit 330 of the education service providing server of FIG. 2.
Figures 4 and 5 are diagrams for explaining an embodiment in which a Korean language education service according to an embodiment of the present invention is implemented.
Figure 6 is an operation flowchart for explaining a method of providing Korean language education services according to an embodiment of the present invention.

Below, with reference to the attached drawings, embodiments of the present invention will be described in detail so that those skilled in the art can easily implement the present invention. However, the present invention may be implemented in many different forms and is not limited to the embodiments described herein. In order to clearly explain the present invention in the drawings, parts that are not related to the description are omitted, and similar parts are given similar reference numerals throughout the specification.

Throughout the specification, when a part is said to be "connected" to another part, this includes not only the case where it is "directly connected," but also the case where it is "electrically connected" with another element in between. . In addition, when a part is said to "include" a certain component, this means that it does not exclude other components, but may further include other components, unless specifically stated to the contrary, and one or more other features. It should be understood that it does not exclude in advance the presence or addition of numbers, steps, operations, components, parts, or combinations thereof.

The terms "about", "substantially", etc. used throughout the specification are used to mean at or close to the numerical value when manufacturing and material tolerances inherent in the stated meaning are presented, and are used to enhance the understanding of the present invention. Precise or absolute figures are used to assist in preventing unscrupulous infringers from taking unfair advantage of stated disclosures. The term “step of” or “step of” as used throughout the specification of the present invention does not mean “step for.”

In this specification, 'part' includes a unit realized by hardware, a unit realized by software, and a unit realized using both. Additionally, one unit may be realized using two or more pieces of hardware, and two or more units may be realized using one piece of hardware. Meanwhile, '~ part' is not limited to software or hardware, and '~ part' may be configured to reside in an addressable storage medium or may be configured to reproduce one or more processors. Therefore, as an example, '~ part' refers to components such as software components, object-oriented software components, class components, and task components, processes, functions, properties, and procedures. , subroutines, segments of program code, drivers, firmware, microcode, circuits, data, databases, data structures, tables, arrays, and variables. The functions provided within the components and 'parts' may be combined into a smaller number of components and 'parts' or may be further separated into additional components and 'parts'. In addition, the components and 'parts' may be implemented to regenerate one or more CPUs within the device or secure multimedia card.

In this specification, some of the operations or functions described as being performed by a terminal, apparatus, or device may instead be performed on a server connected to the terminal, apparatus, or device. Likewise, some of the operations or functions described as being performed by the server may also be performed in a terminal, apparatus, or device connected to the server.

In this specification, some of the operations or functions described as mapping or matching with the terminal mean mapping or matching the terminal's unique number or personal identification information, which is identifying data of the terminal. It can be interpreted as:

Hereinafter, the present invention will be described in detail with reference to the attached drawings.

1 is a diagram for explaining a Korean language education service provision system according to an embodiment of the present invention. Referring to FIG. 1, the Korean education service providing system 1 may include at least one user terminal 100, an education service providing server 300, and at least one participant terminal 400. However, since the Korean language education service providing system 1 of FIG. 1 is only an embodiment of the present invention, the present invention is not limitedly interpreted through FIG. 1.

At this time, each component of FIG. 1 is generally connected through a network (Network, 200). For example, as shown in FIG. 1, at least one user terminal 100 may be connected to the education service providing server 300 through the network 200. In addition, the education service providing server 300 may be connected to at least one user terminal 100 and at least one participant terminal 400 through the network 200. Additionally, at least one participant terminal 400 may be connected to the education service providing server 300 through the network 200.

Here, the network refers to a connection structure that allows information exchange between each node, such as a plurality of terminals and servers. Examples of such networks include a local area network (LAN) and a wide area network (WAN). Wide Area Network, Internet (WWW: World Wide Web), wired and wireless data communication network, telephone network, wired and wireless television communication network, etc. Examples of wireless data communication networks include 3G, 4G, 5G, 3rd Generation Partnership Project (3GPP), 5th Generation Partnership Project (5GPP), Long Term Evolution (LTE), World Interoperability for Microwave Access (WIMAX), and Wi-Fi. , Internet, LAN (Local Area Network), Wireless LAN (Wireless Local Area Network), WAN (Wide Area Network), PAN (Personal Area Network), RF (Radio Frequency), Bluetooth network, NFC ( It includes, but is not limited to, Near-Field Communication (Near-Field Communication) network, satellite broadcasting network, analog broadcasting network, and DMB (Digital Multimedia Broadcasting) network.

In the following, the term at least one is defined as a term including singular and plural, and even if the term at least one does not exist, each component may exist in singular or plural, and may mean singular or plural. This should be self-explanatory. In addition, whether each component is provided in singular or plural form may be changed depending on the embodiment.

At least one user terminal 100 may be a terminal of a Korean or a foreigner who wants to learn Korean using a web page, app page, program, or application related to the Korean language education service.

Here, at least one user terminal 100 may be implemented as a computer capable of accessing a remote server or terminal through a network. Here, the computer may include, for example, a laptop equipped with a navigation system and a web browser, a desktop, a laptop, etc. At this time, at least one user terminal 100 may be implemented as a terminal capable of accessing a remote server or terminal through a network. At least one user terminal 100 is, for example, a wireless communication device that guarantees portability and mobility, and includes navigation, personal communication system (PCS), global system for mobile communications (GSM), personal digital cellular (PDC), PHS (Personal Handyphone System), PDA (Personal Digital Assistant), IMT (International Mobile Telecommunication)-2000, CDMA (Code Division Multiple Access)-2000, W-CDMA (W-Code Division Multiple Access), Wibro (Wireless Broadband Internet) ) It may include all types of handheld-based wireless communication devices such as terminals, smartphones, smartpads, and tablet PCs.

The education service providing server 300 may be a server that provides a Korean education service web page, app page, program, or application. Additionally, the education service providing server 300 may be a server that stores content corresponding to speech and grammar and builds a database so that speech and grammar can be taught. Additionally, the education service providing server 300 may be a server that outputs and repeats content corresponding to the speech method or grammar in order when the user terminal 100 selects a speech style or grammar. In addition, when Korean language education is conducted through a play, the education service providing server 300 forms one class in conjunction with the participant terminal 400, creates a channel to transmit and receive audio and video in both directions, and provides information on each script. It may be a server that turns on microphone control to the terminals (100, 400) in charge of each role according to the turn. In addition, the education service providing server 300 may be a server that, when a voice utterance exists in the user terminal 100, compares it with the voice utterance of pre-stored content and then transmits the comparative analysis result to the user terminal 100. .

Here, the education service providing server 300 may be implemented as a computer that can access a remote server or terminal through a network. Here, the computer may include, for example, a laptop equipped with a navigation system and a web browser, a desktop, a laptop, etc.

At least one participant terminal 400 may be a terminal of a participant using a web page, app page, program, or application related to the Korean language education service. Then, the participant of the participant terminal 400 selects his/her role, and when his/her turn comes and is given microphone control, he or she makes a voice speech, and the participant terminal 400 receives this input and sends it to the education service providing server 300. It may be a transmitting terminal.

Here, at least one participant terminal 400 may be implemented as a computer capable of accessing a remote server or terminal through a network. Here, the computer may include, for example, a laptop equipped with a navigation system and a web browser, a desktop, a laptop, etc. At this time, at least one participant terminal 400 may be implemented as a terminal capable of accessing a remote server or terminal through a network. At least one participant terminal 400 is, for example, a wireless communication device that guarantees portability and mobility, and includes navigation, personal communication system (PCS), global system for mobile communications (GSM), personal digital cellular (PDC), PHS (Personal Handyphone System), PDA (Personal Digital Assistant), IMT (International Mobile Telecommunication)-2000, CDMA (Code Division Multiple Access)-2000, W-CDMA (W-Code Division Multiple Access), Wibro (Wireless Broadband Internet) ) It may include all types of handheld-based wireless communication devices such as terminals, smartphones, smartpads, and tablet PCs.

FIG. 2 is a block diagram for explaining the education service providing server included in the system of FIG. 1, and FIG. 3 is an example of a paused reading function performed in the reading practice unit 330 of the education service providing server of FIG. 2. It is an explanatory drawing, and FIGS. 4 and 5 are drawings for explaining an embodiment in which a Korean language education service according to an embodiment of the present invention is implemented.

Referring to FIG. 2, the education service provision server 300 includes a speech education unit 310, a grammar education unit 320, a reading practice unit 330, a theater unit 340, a labeling unit 350, and a pronunciation analysis unit 360. ) may include.

The education service providing server 300 according to an embodiment of the present invention or another server (not shown) operating in conjunction with at least one user terminal 100 and at least one participant terminal 400 provides a Korean education service application, When transmitting a program, app page, web page, etc., at least one user terminal 100 and at least one participant terminal 400 can install or open the Korean education service application, program, app page, web page, etc. there is. Additionally, a service program may be run on at least one user terminal 100 and at least one participant terminal 400 using a script executed in a web browser. Here, a web browser is a program that allows the use of web (WWW: World Wide Web) services and refers to a program that receives and displays hypertext written in HTML (Hyper Text Mark-up Language), for example, Netscape. , Explorer, Chrome, etc. Additionally, an application refers to an application on a terminal and includes, for example, an app running on a mobile terminal (smartphone).

Referring to Figure 2, the speech education department 310 sets the vocal utterance corresponding to the Korean utterance uttered by the direct teaching method as the first stage, and the vocal utterance that conveys meaning in the user's native language by the grammatical teaching method. can be set as the second stage, the voice utterance uttered by the Parentese speech method can be set as the third stage, and the fourth stage can be set to return to the first stage and restart the first stage. At this time, the speech education department 310 sets the Korean sentence uttered by the direct teaching method in the first stage of the speech education department 310 to be uttered twice, and in the second stage of the speech education department 310, it is uttered by the grammar teaching method. The user's native language for the Korean sentence is set to be uttered once, the Korean sentence uttered in the parent's speech method is set to be uttered twice in the third step of the speech education department 310, and the fourth step of the speech education department 310 is set to be uttered twice. At this stage, Korean sentences uttered using the direct teaching method can be set to be uttered twice.

At this time, the direct teaching method is a teaching method that uses only the target language in the same way as teaching the native language to children using ordinary Korean speech. Maintain pace, tone of voice, and speak syllable by syllable. The grammar-based teaching method is a method of conveying meaning by presenting English, which is the learner's common language, to multinational learners, the learner's native language to learners of the same language, or images or photos to learners without language awareness. Parental speaking is generally a method in which parents speak slowly to their children with an exaggerated intonation, and is a strictly grammatical speaking style that elongates or exaggerates actual words and sentences. By extending the sentence in a long, high tone and uttering it rhythmically, it provides optimized information to the brain and can help it unconsciously recognize the process of speech principles. By reading syllables slowly and accurately, it helps native speakers accurately recognize lump sounds. After proceeding with these three steps, we finish with the first speech method, in which the language acquired through the parent's speech method is re-pronounced using the native speaker's speech method.

The grammar education department 320 separately specifies the Vst (Verb Stem), which is the stem included in each sentence, sets the output of each sentence and stem to the first stage, and sets the output of the alphabet segment of the word to which the Vst is attached. It is set in two stages, and after labeling and storing the positive vowels and negative vowels among the grammar discrimination criteria, the user terminal 100 is set to output in the third stage, and labeling is performed to distinguish the sentence form, which is the form of the sentence, and stored. After that, the user terminal 100 can be set to be output in the fourth step.

A word may be made up of a single morpheme and cannot be divided into smaller elements with meaning, or it may be made up of several morphemes combined. When a word is made up of multiple elements (morphemes), the elements that become the unit of combination may have different characteristics or roles, and terms are needed to refer to these different elements. Root, base, and stem are the most essential of those terms. Definitions of roots, stems, and stems used in Korean linguistics can be broadly divided into two streams. In one embodiment of the present invention, definitions widely used in general linguistics are followed. Root, root, and stem are all terms related to the structure of a word. In morphology, root and stem are traditionally used first, but with the addition of base, the three terms are used as different concepts. A root is a morpheme that forms the center of a word and is the part that remains when all affixes are removed. A root is the part of a word that is subject to adding affixes and a part of a word that is subject to morphological processes. The stem is an inflection. This is an irregularity in affixes.

Stem is a type of verb, and the verb that is the subject of an inflectional affix is especially called a stem. In languages that widely use the method of expressing grammatical functions through affixes, the object to which an inflectional affix is attached is specifically referred to as the stem to distinguish it from the object to which a derivational affix is attached. For example, ‘trampled-’ in ‘trampled’ becomes the stem of the inflectional affix (ending) ‘-da’. Also, ‘laughter, laugh out loud’ does not include an inflectional affix, so there is no part corresponding to the stem. The part corresponding to the stem in ‘laugh, laughed’ is ‘ut-’, in ‘funny’ the stem is ‘laughter-’, in ‘funny’ the stem is ‘funny-’, and in ‘laughter’ the stem is ‘mock-’ am. Lexicalists do not make a special distinction between stem and root, and often refer to the object, whether it has a derivational affix or an inflectional affix, as a stem.

Alphabet segmentation is the separation of the consonants and vowels of the stem, referred to as Vst. This is disclosed in detail in Korean Patent No. 10-0629862 (announced on September 29, 2006), so detailed description will be omitted. Positive vowels are ㅏ, ㅐ, ㅑ, ㅒ, ㅗ, ㅘ, ㅙ, ㅚ, ㅛ, (ㆍ), (ㆎ), and voice vowels are ㅓ, ㅔ, ㅕ, ㅖ, ㅜ, ㅝ, ㅞ, ㅟ. , ㅠ, ㅡ, ㅢ. Here, the neuter vowel is ㅣ. Matching vowels of the same category means that when syllables with vowels of different categories are put together, the vowels of one are transformed into the corresponding pair of the other. Do not use ‘yellow’ or ‘yellow’, such as ‘yellow-yellow’. These grammar discrimination standards can be labeled as NLP standards.

Sentence type is the type of arrangement of sentence components that make up a sentence. In particular, the type in which basic components such as subject, predicate, and object form a single sentence are called basic sentence types. For example, 'Please wait a moment' and 'Please take a note' are request-type sentences, and '-(eu)seo' in 'Please wait a moment' is used in the place of asking, meaning an explanation, question, or request. Since it is a combination of the ending endings '-eusi' and '-eo', it is used as a sign of invitation depending on the context. Alternatively, '-ㅂshio' used in 'wait' is a final ending that indicates the meaning of a command, so it can be an imperative sentence. At the end, the sentence pattern is displayed along with the grammatical discrimination criteria so that the structure itself can be understood as to what type of grammar it is used in.

Accordingly, the user terminal 100 outputs at least one step-by-step content including text, images, and voices for learning how to speak, and when the user's voice utterance is recognized, compares it to proceed to the next step and learn grammar. It outputs Vst (Verb Stem), which is the stem for each word, outputs the alphabet segment of the word to which Vst is attached, outputs grammatical discrimination standards for distinguishing positive or negative vowels, and grammatical discrimination standards and sentence patterns sequentially step by step. Can be printed.

The reading practice unit 330 divides a sentence in Korean into at least one unit, utters the last unit (N) among each divided unit (1 to N) first, and places the last unit before it. The units (N-1) are combined and uttered, and the utterance is set to be repeated until the first unit of each divided unit is combined, and then the utterance is compared with the sentence voiced in the user terminal 100. You can check it. For example, in a sentence consisting of 1+....+N-1+N, utter N first, then N-1 + N, and then N-2+N-1+N. Do this, and keep repeating this way until you have a sentence of 1+....+N-1+N, practicing reading from the back. Figure 3 is a diagram illustrating the paused reading function performed by the reading practice unit 330 by way of example.

The theater unit 340 transmits a script written in Korean to at least one participant terminal and the user terminal 100, and uses a real-time two-way communication channel to connect at least one participant terminal and the user terminal 100 within one class. )'s audio or video is connected, and the audio or video is activated according to each role, allowing speech to be input in turns and streamed in real time. At this time, streaming can also be done based on HTML5 so that it can be streamed based on a web browser without installing a program or application.

Here, HTML5 is the latest standard for HTML (Hyoer Text Markup Language), a web document standard, and includes functions for executing pictures, videos, music, etc. in the center of document creation. HTML5 eliminates the need to install separate programs like plug-in-based Active-X and Flash, and most problems arising from this can be resolved. At this time, the biggest difference between the conventional HTML standard and HTML5 is that it supports semantic markup and provides additional API. Semantic markup is a new element that can semantically structure web documents. For example, if you create a document with elements called <head>, <section>, and <footer> so that the content of the document can be divided into header, body, and footer, you can clearly understand the document's content structurally. Additionally, HTML5 provides various APIs. The API provided by HTML5 allows you to add various functions to web applications, such as supporting two-dimensional graphics or the ability to check the geographic location of the device. In addition, HTML5 is a markup language used when creating web pages, and can express and provide HTML, which was previously displayed as hyperlinks and text, to various applications such as multimedia.

HTML5 can be implemented including HTML, a markup language for web document structure design, CSS for design expression, and JavaScript for expressing interactive actions, and new tags can be added to existing HTML tags. More can be added, and the structure to contain content can be improved to even serve as a platform. In addition, although HTML5 is not a standard for the mobile web, it provides many of the functions necessary for implementing the mobile web among the many functions described above. Two-dimensional graphics, audio, and various web forms can make the UI (User Interface) of the mobile web rich and diverse. In other words, it is possible to provide multimedia information or support dynamic user interaction even in a mobile web environment. In the mobile web environment, there are limitations in transmitting large amounts of data due to the nature of the mobile environment, and environments where the Internet is not connected often occur. However, these limitations can be overcome by implementing offline web applications using the cache of the web client. Alternatively, you can save the DB locally and query it using SQL statements.

The efficiency of the HTTP-based adaptive media streaming system can be increased by using P2P communication based on WebRTC. This is called the Hive system and uses DASH, an HTTP-based adaptive media streaming method. In the Hive system, when a client needs a DASH segment, it is retrieved from the CDN server or HTTP cache by requesting the DASH segment from another peer watching the same content before requesting it from the CDN server. traffic can be greatly reduced. This method can significantly reduce the cost of CDN operators without lowering QoS (Quality of Service) when streaming media. Additionally, compared to the general P2P method, browsers that support the WebRTC standard can use standard APIs, which reduces the cost of developing web programs using JavaScript and eliminates the need to install special plug-ins or additional applications. Therefore, user accessibility and convenience are increased.

After a P2P connection is successfully completed, connected peers inform each other of the media data information they have. Peers use this information to request media data from a randomly selected peer among peers with the media data when they need specific media data. If the data request is rejected or exceeds a certain time, a request is sent to the CDN media server to receive media data. In this process, when media data is requested from peers in a low-speed network environment, requests to the CDN server increase due to poor P2P connection, resulting in CDN cost reduction (amount of data received through P2P/total amount of data received). ) may decrease. Therefore, the client peer accumulates the media data delivery history of peers in the peer list and holds it as statistical values, and uses this when requesting media data through P2P communication, giving priority to the peer expected to have the highest P2P success rate. You can use an algorithm to request media data.

However, since the client tends to continuously request segments from the peers with which it communicates most smoothly in order to maximize the segment acquisition success rate, there is a disadvantage in concentrating the load on these peers. If the load is concentrated on one peer in this way, not only will the resources of that peer be used excessively, but if communication between peers is paid, the owner of that peer will be dissatisfied because he or she will have to bear the cost of P2P traffic in order to reduce CDN costs. You can have it. Therefore, rather than placing an extreme burden on one peer, it is desirable to distribute the burden to multiple peers at an appropriate level. A new peer selection algorithm can be used to distribute the burden to multiple peers while maintaining an appropriate level of CDN cost reduction. .

For example, rather than selecting the peer with the highest priority, construct a list that includes both the peer with the highest priority and peers with priorities one and two levels lower than that priority, and from this, One peer can be selected at random. If the constructed list includes several peers, including the peer that received the previous segment request, the peer that received the previous segment request is excluded from the list, so that one peer can It can be configured to avoid as much as possible the case of receiving two segment requests in succession. Of course, if there is only one peer remaining in the list, a segment request is sent even if it is the peer that received the previous segment request. Usually, the priority of peers that are maintained for a certain period of time in good P2P communication status easily reaches the upper limit, so this is to give peers with priority 3 the opportunity to be selected through a random selection process.

The labeling unit 350 can process and store labeling for Vst, consonant segments, positive and negative vowels that are grammatical discrimination standards, and sentence patterns for at least one Korean sentence using NLP (Natural Language Processing). there is. To distinguish and extract whether a specific word is a noun or a verb, and if it is a verb, what its original form is, you can use KoNLPy, a Korean language processing tool, and to find the original form of a verb, you can use the Stemming function of the Twitter analyzer. The weights of elementary, middle, and high-level words can be set differently, but the weights may increase as you go to more advanced words. Although the above-described configuration sets the complexity and difficulty based on the Korean corpus, it is obvious that the complexity and difficulty can be set by applying the same to corpora for languages other than Korean.

The natural language processing method first begins with POS tagging, which is the most basic technology among natural language processing technologies. In Korean, which is an agglutinative language, unlike English, which is an inflectional language, it is common to perform part-of-speech attachment after morpheme analysis, but a method of performing part-of-speech attachment without morpheme analysis can also be used. The second is syntax analysis, which is a parsing process. The difficulty of syntactic analysis is high in the Korean language due to its free word order and the frequent omission of essential arguments, including subjects. The Sejong Corpus developed by the government can be used, and in addition, the Math Corpus can also be used. there is. In addition, proofreading (spelling) may be further included, and in the case of Korean proofreading technology, it is largely divided into spacing correction and spelling correction technology. In the case of Korean spacing, it can mainly be done using a corpus-based, statistical-based method, but it is not limited to this. In the case of Korean spelling correction research, it is difficult to approach the N-gram method due to the agglutinative nature of the Korean language. Therefore, Korean spelling correction can use correction vocabulary pairs in the Rule-Based method, but is not limited to this. In addition, Word Sense Disambiguation (WSD) can be carried out in various ways, mainly using small-scale semantically tagged corpora or dictionary information, and using entropy information, conditional probability, and mutual information. Korean learning data may include dozens of pieces of data for ambiguous vocabulary such as eyes, hands, and words. Additionally, a cross-reference (Coreference Resolution) may be further included. Lastly, a Named Entity Recognition (NER) process can be added. In the case of Korean entity name recognition, various models can be used in various domains. Of course, it goes without saying that various natural language processing technologies can be used in addition to these processes.

The pronunciation analysis unit 360 analyzes the pitch, first formant (F1) and pitch ratio, pitch bandwidth, average pitch position within the pitch bandwidth, and speech rate for the voice utterance input from the user terminal 100. Acoustic tone analysis data including can be analyzed. At this time, pitch is the height of the sound and is expressed as frequency.

<F1 and pitch ratio>

Formants are one of the important elements that determine the fundamental characteristics of an individual's voice. In the case of pitch, it can be sufficiently changed by adjusting the vocal cords and it is possible to produce a natural voice within an appropriate level, but since the first formant (F1) is fundamentally related to the length of the vocal tract, there are limits to artificial adjustment. Once F1 is determined, the second formant (F2) is calculated proportionally depending on which vowel is produced, so it follows the frequency characteristics of F1. For example, when expressing the ratio relationship between F1 and pitch, the average pitch of general women used to compare the ratio of F1/F0 can be used. F1 basically reflects body size, so it decreases in that order: children, women, and men. A low F1 in the normal listening range affects the weight and stability of the voice. On the other hand, if F1 is high, it will affect the relatively light and lively feeling. This reflects the overall vocal characteristics of men, women, and children. Also, depending on F1, the frequencies of F2 and F3 are all affected, which affects the overall frequency resonance shape. On the other hand, the higher the ratio between pitch and F1, the more the voice feels subdued. This is a different factor from the absolute height of the pitch.

<Pitch Bandwidth>

Since a person's vocal structure and characteristics, including the vocal cords, are innate factors, the pitch that is suitable for one is determined to some extent. On the other hand, the pitch bandwidth in a speaking situation is not related to the innate vocal structure, and can be interpreted as a measure that can be used to determine how fluidly the speaker changes from the basic pitch when speaking. Pitch bandwidth reflects how dynamic the pitch changes are. In tense situations or depressed emotions, the activity of vocal cords decreases, and the most representative example is the vocalization of a robot.

Typical robot vocalizations have a constant pitch, so the pitch bandwidth is very narrow, and this is a typical example of vocalization assuming blunt emotional expression. On the contrary, in order to elicit affection from the other person or increase the ability to convey the targeted content, the activity of the vocal cords must inevitably be increased. Artificially excessive pitch bandwidth may be unnatural to listen to, but narrow pitch bandwidth inevitably reduces concentration and causes boredom. Ultimately, if the listener is within the level of natural hearing, a wide pitch bandwidth is advantageous.

Accordingly, when the overall pitch height and frequency characteristics and the pitch bandwidth and bandwidth ratio of each instructor are represented by the average spectrum around the pitch, it can be a reference value for comparison with the user's vocalization. Human frequency hearing is close to a logarithmic scale, as can be seen in musical scales that rise in multiples per octave. Therefore, the bandwidth ratio according to the pitch position rather than the linear pitch bandwidth is meaningful. Here, the pitch bandwidth is the range from the center frequency with the highest energy in the pitch range of the entire average spectrum of the speaker's voice until the energy drops by 3dB, and the bandwidth ratio is the average pitch divided by this.

<Average pitch position within pitch bandwidth>

People have a tendency to go lower in their voice when finishing a sentence. In other words, the position of the average pitch within the pitch bandwidth is determined depending on the time invested in finishing the sentence or the slope of the curve lowering the pitch. For example, based on the position occupied by the average pitch within the pitch bandwidth, the ratio of low and high pitch bands within the pitch bandwidth considering auditory characteristics can be considered in relation to intonation. The average pitch mainly indicates only the pitch used, but the ratio of the low-pitched band and the high-pitched tone band can be divided through the position of the average pitch within the pitch bandwidth. If the ratio of the low-pitched range of the corresponding number is high, it reflects the speaker's tendency to finish calmly at the end of the sentence or at the middle comma. Conversely, if the low-pitched range ratio is low, it reflects a tendency to finish sentences relatively quickly.

The F0 falling slope of these sentence endings also affects the impression. This number does not represent the entire sentence-ending vocalization characteristics, and it is not possible to distinguish between good and bad instructor's vocalization characteristics through this. F _LP in Equation 1 below is the position ratio of the low-pitched tone band occupied by the average pitch within the pitch bandwidth, and the positional ratio of the high-pitched tone band is F _HP . Here, F _L and F _H represent the minimum and maximum frequencies of the pitch bandwidth, respectively, and F _C is the average pitch.

<Ignition speed>

Speech speed is a measure of how many words a speaker utters per second and indicates the speed at which a speaker speaks. Since the appropriate speed varies depending on which sentence is spoken and under what circumstances, it is impossible to determine whether the speed has been properly controlled based on the average speaking speed alone, but it is possible to determine a certain degree of speed tendency through the average. At this time, the standard for measuring speed may be syllables per second (SPS).

Hereinafter, the operation process according to the configuration of the education service providing server of FIG. 2 described above will be described in detail using FIGS. 4 and 5 as an example. However, it will be apparent that the embodiment is only one of various embodiments of the present invention and is not limited thereto.

Figure 4 shows a teaching method for teaching speaking skills and Figure 5 shows a teaching method for teaching grammar. Following this method, you can publish textbooks or create web pages, app pages, applications, or programs. Of course, what is listed is only an example and is not limited thereto, and it is obvious that various embodiments are possible.

Matters that are not explained regarding the method of providing Korean language education services in FIGS. 2 to 5 are the same as those described in relation to the method of providing Korean language education services through FIG. 1 or can be easily inferred from the contents, so the following explanation is provided. Please omit it.

FIG. 6 is a diagram illustrating a process in which data is transmitted and received between components included in the Korean education service providing system of FIG. 1 according to an embodiment of the present invention. Hereinafter, an example of the process of transmitting and receiving data between each component will be described with reference to FIG. 6, but the present application is not limited to this embodiment, and the process shown in FIG. 6 according to the various embodiments described above It is obvious to those skilled in the art that the process of transmitting and receiving data can be changed.

Referring to FIG. 6, the education service providing server sets the first stage to be a voice utterance corresponding to a Korean utterance uttered by a direct teaching method, and sets a voice utterance that conveys meaning in the user's native language by a grammatical teaching method. It is set to the second stage, the voice utterance made by the Parentese speech method is set to the third stage, and the fourth stage is set to return to the first stage and restart the first stage (S5100).

In addition, the education service providing server separately specifies the Vst (Verb Stem), which is the stem included in each sentence, sets the output of each sentence and the stem as the first stage, and outputs the alphabet segment of the word to which the Vst is attached. It is set as the second stage, and after labeling and storing the positive and negative vowels among the grammatical discrimination criteria, it is set to be output as the third stage on the user terminal, and labeling is performed to distinguish the sentence form, which is the form of the sentence, and then stored. , set to be output in the fourth step from the user terminal (S5200).

The sequence between the above-described steps (S5100 to S5200) is only an example and is not limited thereto. That is, the order between the above-described steps (S5100 to S5200) may change, and some of the steps may be executed simultaneously or deleted.

Matters not explained regarding the method of providing Korean language education services in FIG. 6 are the same as or can be easily inferred from the contents previously described regarding the method of providing Korean education services through FIGS. 1 to 5, so the following explanation is provided. Please omit it.

The method of providing Korean education services according to an embodiment described with reference to FIG. 6 may also be implemented in the form of a recording medium containing instructions executable by a computer, such as an application or program module executed by a computer. Computer-readable media can be any available media that can be accessed by a computer and includes both volatile and non-volatile media, removable and non-removable media. Additionally, computer-readable media may include all computer storage media. Computer storage media includes both volatile and non-volatile, removable and non-removable media implemented in any method or technology for storage of information such as computer-readable instructions, data structures, program modules or other data.

The method of providing a Korean language education service according to an embodiment of the present invention described above can be executed by an application installed by default on a terminal (this may include programs included in a platform or operating system, etc., installed by default on the terminal), It may be executed by an application (i.e., a program) installed directly on the master terminal by the user through an application providing server such as an application store server, a web server related to the application or the service. In this sense, the method of providing Korean language education services according to an embodiment of the present invention described above is implemented as an application (i.e., program) installed by default on the terminal or directly installed by the user, and is stored in a computer-readable record such as on the terminal. Can be recorded on media.

The description of the present invention described above is for illustrative purposes, and those skilled in the art will understand that the present invention can be easily modified into other specific forms without changing the technical idea or essential features of the present invention. will be. Therefore, the embodiments described above should be understood in all respects as illustrative and not restrictive. For example, each component described as unitary may be implemented in a distributed manner, and similarly, components described as distributed may also be implemented in a combined form.

The scope of the present invention is indicated by the claims described below rather than the detailed description above, and all changes or modified forms derived from the meaning and scope of the claims and their equivalent concepts should be construed as being included in the scope of the present invention. do.

Claims (6)

Outputs at least one step-by-step content including text, image, and voice for learning how to speak, and when the user's voice utterance is recognized, compares it to proceed to the next step, and outputs Vst (Verb Stem), which is a stem for learning grammar. A user terminal that outputs the alphabet segment of the word to which the Vst is attached, outputs grammatical discrimination standards for distinguishing between positive and negative vowels, and sequentially outputs the grammatical discrimination standards and sentence patterns step by step; and
Spoken utterances corresponding to Korean utterances uttered by the direct teaching method are set as the first stage, vocal utterances that convey meaning in the user's native language by the grammatical teaching method are set as the second stage, and Parentese ) The speech education department sets the voice utterance uttered by the speech method as the third stage, returns to the first stage as the fourth stage and sets it to restart the first stage, and Vst (Verb Stem), which is the stem included in each sentence. ) is designated separately, the output of each sentence and stem is set to the first stage, the output of the alphabet segment of the word to which the Vst is attached is set to the second stage, and among the grammatical discrimination criteria, positive vowels and negative vowels are set as the first stage. A grammar education department that labels and stores the information and sets it to be output in the third step from the user terminal, and labels and stores the sentences to distinguish sentence types, and then sets the user terminal to output the fourth step. , and transmitting a script in Korean to at least one participant terminal and the user terminal, and connecting the audio or video of the at least one participant terminal and the user terminal within one class using a real-time two-way communication channel. An educational service that includes a theater department that uses P2P communication based on WebRTC and at the same time activates the audio or video according to each role, receives input speech in turns, and streams in real time based on HTML5. server;
According to claim 1,
The Department of Speech Education,
In the first step of the speech education department, the Korean sentence uttered by the direct teaching method is set to be uttered twice, and in the second step of the speech education department, the user's native language for the Korean sentence uttered by the grammatical teaching method is set to 1. It is set to be uttered twice, and the Korean sentence uttered using the parent speech method in the third step of the speech education department is set to be uttered twice, and the Korean sentence uttered using the direct teaching method is set to be uttered twice in the fourth step of the speech education department. A Korean language education service provision system characterized in that it is set to be uttered once.
According to claim 1,
The education service provision server is,
After dividing a sentence in Korean into at least one unit, utter the last unit (N) among each divided unit (1 to N) first, and then utter the last unit and the unit placed before it (N-1). A reading practice unit that combines and utters, sets the utterance to be repeated until the first unit among the divided units is combined, and then checks the utterance by comparing it with the sentence spoken by the user terminal;
A Korean language education service provision system further comprising:
delete According to claim 1,
The education service provision server is,
A labeling unit that processes and stores labeling for Vst, consonant segments, positive vowels and negative vowels as grammatical discrimination standards, and sentence patterns for at least one Korean sentence using NLP (Natural Language Processing);
A Korean language education service provision system further comprising:
According to claim 1,
The education service provision server is,
Analyze acoustic timbre analysis data including pitch, first formant (F1), pitch ratio, pitch bandwidth, average pitch position within the pitch bandwidth, and speech rate for the voice utterance input from the user terminal. a pronunciation analysis unit;
A Korean language education service provision system further comprising:

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