KR100944683B1 - Electronic teaching table system using mcu with integrated signal processing function - Google Patents

Abstract

PURPOSE: An electronic teaching table system using a main controller is provided, which can obtain convenience and agreeable environment of the wiring processing and can prevent malfunction. CONSTITUTION: An electronic teaching table system using a main controller comprises a peripheral device group(20) selected from peripheral devices of a computer; a main controller(10) which is connected to the discrete peripheral devices within the peripheral group and controls peripheral devices; and a teaching desk(30) accepting the main controller. The main controller includes; an integrated signal processing unit processing the integrated signal; and a diagnostic module processing the situation of the peripheral devices receiving the diagnostic signal.

Description

ELECTRONIC TEACHING TABLE SYSTEM USING MCU WITH INTEGRATED SIGNAL PROCESSING FUNCTION

The present invention relates to an electronic teaching system using a main controller with integrated signal processing function, wherein video, sound output and network connection in connection with an existing PC or laptop connected to the main controller having a central control processing function in the electronic teaching system. It is possible to boast the neatness of wire processing by integrating and connecting a plurality of wirings into one, and to provide an easy connection to other peripheral devices other than a PC or a notebook. It is about.

 Electronic teaching system is used for lectures and education in classrooms and classrooms of schools and corporations. In general, lecturers (users) use writing software on monitors (tablet monitors, etc.) in electronic teaching systems to teach and lecture. The content generally refers to a system that can be printed on the screen of a beam projector or a large copyboard so that a lecturer (student, etc.) can view it on a large screen.

The electronic teaching system can not only conveniently use various educational contents stored in the DB server but also peripheral devices such as monitors, beam projectors, speakers, etc., in the MCU (Main Controller Unit), which is a central control unit of the electronic teaching system. Is connected in a wired or wireless manner, which makes it more convenient to control the lecture.

However, in the existing electronic teaching system, since a plurality of electronic devices are connected to the MCU, the wiring process is not neat and the rear part of the MCU becomes dirty or complicated. Or confusion when removing it.

In order to solve this problem, there may be a space for concealing wiring on one side of the electronic teaching table where the MCU is accommodated, but it cannot provide a fundamental solution for solving a complicated wiring state.

Lecture content displayed on a monitor in a general electronic teaching system (control display panel or touch screen) can be displayed on the beam projector screen as it is. Educational contents (or lecture materials) such as images can be provided in various ways, and in many cases, PCs or laptops serve as a material providing server.

However, although the existing electronic lectures provide multimedia educational contents such as video and images, they are often provided using Microsoft's PowerPoint or media player installed in the PC. In many cases, the lecturer must edit and save videos and images for each lecture in order to fully utilize and express various educational contents databases stored in PCs with sufficient hard disk capacity. There was a problem to take the inconvenience.

Therefore, PC to laptop and main controller can be connected and processed by simple cable integration method, and more diverse and efficient lecture contents exposure method is provided, and various educational contents stored in hard disk such as PC can be used more conveniently. There is a need to provide a new and advanced electronic teaching system that can be used as a system.

SUMMARY OF THE INVENTION The present invention has been made to overcome the problems of the above-described technology, and particularly in an electronic teaching system having a main controller for connecting and controlling various peripheral devices, in particular, audio of a computer for storing educational materials and executing lecture programs among peripheral devices. Its main purpose is to provide an electronic teaching system that integrates the video / network terminal into one to connect to the integrated USB port of the main controller, providing a convenient and convenient environment for wiring and preventing troubles. do.

Another object of the present invention is to provide convenience of operation of a peripheral device by assigning a specific default value to each of the on / off states of the peripheral device and performing a driving process by the corresponding default value when the main controller is turned on / off.

Still another object of the present invention is to provide a self-diagnostic function by checking for abnormalities of peripheral devices.

It is a further object of the present invention to express educational contents supplementally inserted in lecture materials by using a picture in picture (PIP) display method.

It is a further object of the present invention to provide a means for efficiently displaying and extracting educational content expressed in a PIP method by a search term search and priority selection method.

In order to achieve the above object, the electronic teaching system using the main controller having an integrated signal processing function according to the present invention, an image output device having a video / audio input / output function, a microphone, a monitor, a beam projector, a screen, a speaker, educational content And a peripheral device group selected from peripheral devices including a computer having a DB server function for storing lecture data. A main controller connected to individual peripheral devices in the peripheral device group to control the peripheral devices; The main controller includes an integrated signal processing unit configured to connect the audio / video / network cable of a computer among the peripheral devices through one integrated USB port to perform integrated signal processing. It is characterized by including.

The main controller may further include a condition setting unit that sets a default value of the peripheral device according to the ON / OFF processing of the main controller, and the peripheral device is driven according to the DEFAULT value when the main controller is turned on / off. It is characterized in that it further comprises a setting module for processing so that.

The main controller may further include a PIP display module having a display unit that provides a PIP screen for simultaneously displaying lecture materials and educational contents on one screen.

In addition, the PIP display module,

A tag setting unit for designating a tag functioning as a headword function related to a topic of the education content and storing the tag in a file header of the education content; A search word input unit which inputs and processes a specific word included in the lecture data as a search word; And a matching unit that matches and searches for educational content having a tag corresponding to the search word, wherein the display unit recognizes the lecture material as a first screen and uses the matching content found by the matching unit as a second screen. Recognize and simultaneously display the first and second screens on one screen.

According to the electronic teaching system using the main controller having an integrated signal processing function according to the present invention,

1) It has the advantage of preventing the neatness and trouble of wiring by receiving video / audio / network connection from one main controller through one cable and one USB port.

2) Peripheral devices can be driven by a specific default value by the ON / OFF operation of the main controller, reducing the inconvenience of having to operate the peripheral devices one by one.

3) The self-diagnosis function of the peripheral devices under the control of the main controller not only allows the user to quickly check for abnormalities.

4) PIP can be used to display the educational contents that can supplement the contents of lectures, and ensure the efficiency of lecture contents delivery.

5) It provides the convenience of preparing lecture materials as well as pursuing qualitative improvement of lecture materials by displaying the educational contents matching the lecture materials first and displaying them in a PIP manner.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. The accompanying drawings are not drawn to scale, and the same reference numerals in each of the drawings refer to the same components.

1 is a conceptual diagram illustrating various peripheral devices that may be connected to a main controller of an electronic teaching system using a main controller having an integrated signal processing function according to the present invention.

The main controller 10 serves to perform a central control function of the electronic teaching system, and as shown in FIG. 1, the main controller 10 may be connected to various peripheral devices, and these peripheral devices are referred to as the peripheral device group 20. do.

That is, the individual peripheral devices constituting the peripheral device group 20 are detachably connected to a plurality of terminals located at the rear part of the main controller 10 to implement ON / OFF processing and operation under the control of the main controller 10. It is made to be.

In particular, the main controller 10 according to the present invention can control basic peripheral devices such as PCs, projectors, microphones, as well as extended peripheral devices such as security sensors, fire alarm (fire) sensors, and electronic curtains.

2 is a perspective view showing an exemplary appearance of the teaching of the electronic teaching system according to the present invention.

The lecture table 30 according to the present invention is used by the lecturer for the lecture, and the lecturer can operate the main controller 10 and the peripheral device group 20 provided in the lecture table 30.

The teaching desk 30 may include a control panel and microphone, various cable terminal grooves, a keyboard support, etc., including a top plate on which a notebook may be seated, and have a separate space for accommodating a main controller.

The main controller 10 is provided in such a table, it may be exposed to the outside one side for convenience of operation / control.

Such a table 30 may not only be implemented as a single-use table as shown in Figure 2, it is also of course possible to be designed for application as a round table or multi-use table.

3 is a block diagram showing a specific configuration of the electronic teaching system according to the present invention.

As can be seen from Figure 3, the system according to the present invention is the main controller 10, peripheral device group 20, teaching table 30, training content DB 40, lecture materials DB 50, interworking module 110 ), A setting module 120, a self-diagnosis module 130, and a PIP display module 200.

As shown in FIG. 1, the peripheral device group 20 according to the present invention refers to various electronic devices that may be connected to the main controller 10, for example, a projector, a monitor (control display panel), a speaker, and a prompter. There may be things like, microphones, Bluetooth devices (earphones, keyboards, etc.), PCs (desktops), laptops, DVD players, cameras, electronic curtains, screens, digital door locks, fire alarm sensors, DB servers, screens.

Here, the DB server stores education contents and makes them available during lectures. In general, the DB server plays a role of the DB server in a computer such as a notebook or a PC.

The peripheral device group 20 may be driven by the control of the main controller 10, the connection state or disconnection while being connected and disconnected to the terminal on the rear of the main controller elastically according to the contents of the lecture or classroom situation, etc. Can have state

4 is a conceptual diagram schematically illustrating a rear portion of a main controller according to the present invention.

4, the main controller 10 has a number of input / output terminals (e.g., input: two USB ports, one DVI port, three composite ports. The output: one DVI port, a VGA at the rear side. Ports) allow these terminals to connect individual peripherals in a group of peripherals.

In particular, the main controller 10 includes an integrated signal processor 11 to provide a DB server function for storing lecture data or training content, among other peripheral devices, and a main function for outputting sound or video of lecture data and training content. It provides the ability to complete a connection with a computer such as a laptop or PC in charge through a single integrated cable.

In other words, when downloading lecture materials or educational contents from a hard disk of a computer such as a notebook or a PC and executing them by a media player or a presentation execution program, the general main controller 10 outputs video outputs from a computer such as a notebook or a PC. The D-SUB cable, the audio output cable, the microphone input cable, and the RJ-45 cable for network connection had to be connected through separate ports.

However, the integrated signal processor 11 according to the present invention provides an interface that integrates a video, audio, LAN, and USB hub, in particular, for connecting a computer to the main controller 10. By combining the cables connected from the complex terminals into one integrated cable 12 and connecting these integrated cables to the integrated USB port 13 of the main controller, the signal processing function through the existing multiple cables can be integrated. It is.

 The integrated signal processor 11 can execute a transmission and distribution function of a multi-channel audio / video source having a sufficient bandwidth based on USB (Integrated USB), which is generated in the process of converting existing analog data into a digital signal. Not only can it reduce the noise, it can prevent the inconvenience caused by complicated cable connection, the problem that the connecting pin bends when screwing the D-SUB cable, and also prevents the occurrence of troubles. Provide the characteristics.

The main controller 10 is connected to a plurality of peripheral devices to control a variety of peripheral devices, and in particular, the automatic setting function, the self-diagnosis function, the PIP display function in the state of interlocking with the peripheral devices, and these functions are described in detail. The description based on the module is as follows.

The interlocking module 110 provides a function of recognizing a peripheral device connected to the main controller 10 at the main controller 10 level and interlocking both of them, when the peripheral device is connected to a terminal of the main controller 10. It can recognize peripheral devices, and it also has the ability to check the ON / OFF status and operation status of peripheral devices.

The setting module 120 performs a function of causing a peripheral device connected to the main controller 10 to be driven by a corresponding default value when the peripheral controller connected to the main controller 10 has a specific setting state, that is, a default value when the main controller 10 is ON / OFF processed. do.

For example, when the main controller 10 is turned off, the monitor is also turned off, the electronic curtain is wound to raise the curtain, and the surveillance camera and the fire detection sensor can be operated. When the 10) is ON, the settings for preparing the lecture, such as setting the time of the lecture, setting the clock mode to the video mode of the monitor, turning off the surveillance camera, and rewinding the beam projector are performed.

The setting module 120 includes a condition setting unit 121 and an execution unit 122 so that the condition setting unit 121 performs operation setting for individual peripheral devices immediately after the on / off processing of the main controller 10. The execution unit 122 may perform a specific operation by transmitting a control signal to individual peripheral devices based on a criterion determined by the condition setting unit 121 after the main controller 10 is turned on / off. do.

The setting module 120 provides convenience that a setting operation for a plurality of peripheral devices can be executed by only one on / off process of the main controller 10.

The self-diagnosis module 130 according to the present invention enables self-detection of an abnormal state of a peripheral device at the main controller 10 level. Specifically, the self-diagnosis module 130 includes a diagnostic signal transmitter 131 and a state output unit 132. Doing.

The diagnostic signal transmitter 131 transmits a diagnostic signal to an individual peripheral device at a predetermined cycle so that the signal for the status of the individual peripheral device itself can be returned to the main controller 10 after receiving the diagnostic signal from the peripheral device. Provides the ability to

The diagnostic signal is composed of a signal that can check the peripheral device for abnormality. The diagnostic signal is periodically transmitted to the peripheral device to analyze the reply information of the peripheral device so that an abnormal condition occurs or there is no reply itself. To be recognized.

In particular, the status output unit 132 has a function of outputting an abnormal state of the peripheral device through a monitor connected to the main controller 10 when an abnormal state of the peripheral device occurs.

That is, the self-diagnosis module 130 may check the abnormality of the peripheral device and display the abnormal state at the main controller 10 level, thereby ensuring the usability and convenience of the main controller 10 more intuitively. To provide.

Educational content according to the present invention refers to education-related multimedia content that is stored in advance in a DB server (PC, laptop, such as a computer), for example, consisting of various formats such as image files, videos, flash, text Contains content.

Such education content can be described separately from the lecture material in the present invention. That is, the lecture material refers to the material prepared by the lecturer in advance for the lecture, that is, the material edited or corrected to some extent by the lecturer, and the educational contents are various originals or sources that can be used by being attached to the lecture material, It can be included in or included in the lecture data to supplement the lecture data or form a part of the lecture data.

Therefore, the lecture material may be obtained by the lecturer to the educational content by a separate source, but in the present invention, the lecture material can be edited or completed by actively using the educational content.

Therefore, the present applicant has sought to improve the quality of lecture materials by allowing lecturers to edit lecture materials by actively utilizing the educational contents, and to expose the convenience of editing and rich educational materials, which will be described later. It is implemented through the PIP display module 200.

5 is a conceptual diagram illustrating a multi-split display screen by the PIP display module according to the present invention by way of example.

The PIP display module 200 according to the present invention has a function of expressing a screen displayed through a monitor (control display panel) and a beam projector in a picture in picture (PIP) manner when performing lectures and seminars using an electronic teaching table. To provide.

PIP display module according to the present invention is to display a more diverse and richer material screen by linking and matching with the educational content of the educational content database instead of simply dividing and displaying the screen for the lecture material presented as a lecture image At the same time, it is possible to provide a function of automatically setting the relationship between the main screen (first screen or main screen) and the sub screen (second screen or sub screen) according to the main content or the highlighted content.

That is, according to the PIP display module 200, it is linked with a DB server so that the lecturer can edit the lecture materials and simplify the search for the materials, and match and expose abundant educational contents. To express a unique feature that matches and extracts the educational content.

As can be seen from FIG. 5, the PIP display module expresses two or more contents (education contents, lecture materials) in a form in which a main screen (main screen) includes a sub screen (sub screen) or at regular intervals. It is possible to display different contents on a monitor or the like by arranging more than one frame and a multi-division method.

In detail, the PIP display module 200 includes a tag setting unit 210, a tag ranking designation unit 220, a search word input unit 230, a matching unit 240, and a display unit 250.

6 is a conceptual diagram schematically illustrating a concept of tag designation by a tag setting unit according to the present invention.

The tag setting unit 210 serves to set a kind of header word, that is, a tag, in a file header portion of individual education content of the education content database stored in the DB server.

The tag meaning in the present invention defines a subject of the educational content, and serves to specify a representative subject of the educational content, that is, a headword. Such a tag may be stored in the file header part of the education content by the tag setting unit 210.

In addition, the tag setting unit 210 includes a function of designating a plurality of tags. In other words, the tag setting unit 210 provides a function of designating a plurality of tags for classifying and defining a single education content.

As can be seen from Figure 6, for example, when the educational content containing the appearance characteristics of the tiger, the residence, behavior grasp, the content of the habitat is in the form of a plurality of images, videos, texts, etc. close or closely related tags You can set to multiple and then classify them by group.

That is, in the tag setting unit 210 according to the present invention, it is possible to specify a plurality of tags in one training content, but the degree of association of each tag (that is, the degree suitable for representing the corresponding training content in one word. Grouping may be performed in advance according to subjective intention and criteria by the user uploading the content.

The tag ranking unit 220 performs a function of assigning a rank to a tag or a tag group set by the tag setting unit 210. This ranking is applied to a user uploading training contents to a DB server when a tag is generated. Set the representative subject of the tag as a separate subject tag or assign a tag that exactly matches the subject tag as the first subject, and the remaining tads have the same post rank. It is possible to process.

In the present invention, the tag ranking is the processing of the correlation with the corresponding educational content. For example, in the educational content based on the tiger as the subject (representative tag) in FIG. It is possible to designate a tag having a first priority tag group, and then set the second and third priority tag groups in consideration of association with the tiger.

That is, the tag ranking is for specifying the ranking of the training contents to be included in the lecture materials. When the lecture materials are exposed during the lecture, the tag ranking is searched in the order of tag ranking in the search term input unit to be described later. To display the PIP method with lecture data by rank.

The search term input unit 230 designates a predetermined text included in the lecture material as a search word and searches for the education content.

In detail, the search word input unit 230 is divided into a manual input means 231 and an automatic input means 232.

The manual input means 231 allows the lecturer to select a specific keyword of the lecture material and set it as a search word. When the text in the lecture material is clicked or clicked with a mouse on a monitor configured as a touch screen, it is recognized as a search word. In addition, the present invention provides a function of transmitting the search word to the matching unit 240 to be described later to search the education content having a tag matching the recognized search word.

The automatic input unit 232 automatically selects a specific keyword displayed in the lecture data, recognizes it as a search word, and then delivers the recognized search word to the matching unit 240.

In this case, the method of automatically selecting specific keywords of the lecture material may include scanning a specific page of the lecture material to select a large text as a search term, and automatically selecting a word displayed in the title as a search term. Can exist.

The matching unit 240 receives a search word recognized by the search word input unit 230 and performs a matching process on a tag of the education content stored in the DB server to extract a matched education content. The ranking means 241, the random decision means 242, and the multi-part determination means 243 are included.

The matching rank determining unit 241 performs a function of differentially notifying the matching result in the order of the ranking designated by the matching rank designating unit 220 when a plurality of training contents are extracted. That is, in the example of FIG. 5, five education contents having a tag matching the search word for the subject tag 'tiger' have been searched, and one of the education contents having the first priority tag group is one and the second priority tag. It performs a function of notifying the display unit 250, which will be described later, that two pieces of education content having a group and two pieces of education content having a third-order tag group have been searched. The educational content notified to the display unit 250 presents a criterion for determining whether or not to select the display when the educational content is displayed mixed with the lecture data by the PIP function.

The random determination means 242 has a function of randomly delivering all searched educational contents to the display unit 250 without ranking or regardless of tag ranking. In other words, in order to avoid the need to designate the priority of the tag, it has a role of delivering the education content searched to be related to the search word to the display unit without specifying a specific rank.

The multi-part determination unit 243 may, of course, display a combination of a plurality of contents or lecture materials on the display unit 250 itself, but as shown in FIG. 6B, the matching unit 240 performs an education content search. The divisional display method of the plurality of searched educational contents is determined.

That is, in order to reduce the burden of determining the PIP display method in the display unit 250, the display unit may determine the display method up to the display method level in advance. For example, when four education contents are searched, four 2 * The decision is whether to split display into two matrix structures or to split display into 4 * 1 matrix structures.

The display unit 250 according to the present invention includes a function of mixing and displaying two or more contents (lecture materials) by using a PIP method, and setting a display method according to a main / sub positioning function of a content to be displayed and a tag rank. Function, a blending method applying function when configuring a plurality of educational content at the same time as a single display screen, specifically, the main species determination means 251, tag ranking linkage determination means 252, mixed exposure means 253, Exposure state determination means 254.

Master species determining means 241 has a function of setting the main screen and the sub-screen, respectively, and displays the searched educational content and lecture materials, respectively, as shown in FIGS. 6 (a) and 6 (b).

In general, set the teaching material as the main display screen and the searched teaching content as the subordinate display screen, and vice versa, further setting the main / sub display screen with only two or more teaching materials, or setting two or more teaching contents. It is also possible to set up the main / sub display screen only, and in particular, the lecture material may be produced by blanking the space where the educational content is displayed in advance.

In addition, after determining the arrangement of display screens of the main and sub units, the master or slave determining unit 251 may display lecture materials and educational contents by various PIP display methods other than those shown in FIG. 6.

The tag rank linkage determining unit 252 plays a role of selecting a display screen based on a tag rank when there are a plurality of searched education contents when configuring the PIP display screen.

That is, when only one education content having a tag rank of 1st priority is selected and displayed in the manner as shown in FIG. 6 (a), or when there are four tag ranks of 1st rank or 2 tag ranks, 2nd rank and 2nd rank 2 When the educational content is retrieved as a dog, the PIP display screen can be set in the same manner as in FIG. 6 (b) (that is, two first rows and two second rows). The tag ranking linkage determining means is a reasonable method because it displays a plurality of retrieved educational contents or display spaces or situations, so that only a small number of educational contents should be displayed according to the ranking of tags. Guidelines for display representation or selection can be suggested.

The mixed exposure means 253 is different from the master / slave determination means 251 in the same status (that is, regardless of whether or not the master or the like) of the teaching material or educational content in FIG. It performs the role of displaying in the manner of 6 (d).

That is, the PIP display screen according to the present invention is not necessarily to be determined the main / sub display screen, it is possible to arrange at regular intervals horizontally and vertically as the same position with each other, furthermore, the tag rank interworking determination means In connection with 252, only a certain number of educational contents may be first selected and displayed as the same status as the lecture materials.

The exposure state determining means 254 performs basic PIP functions such as the exposure time and PIP display method (ie, the design of the screen arrangement) and the PIP display of the education content selected as the sub display screen, in particular. In addition, a separate PIP setting interface is provided to enable a lecturer to determine whether to display the PIP by operating the same, and also provides a role of allowing educational contents to be included in the lecture material using the above configuration.

The display unit 250 and the PIP display module 200 not only can display the lecture material screen in a richer and qualitatively superior state, but also because the educational content found in the lecture material can be automatically compounded. It provides a feature that reduces the time it takes to prepare materials and allows you to display more diverse teaching materials differentially based on their relevance to the teaching material.

As described so far, the configuration and operation of the electronic teaching system using the main controller having the integrated signal processing function according to the present invention have been described in the above description and the drawings, but this is merely an example and the idea of the present invention is described above. And not limited to the drawings, various changes and modifications are possible within the scope not departing from the technical idea of the present invention.

1 is a conceptual diagram illustrating various peripheral devices that may be connected to a main controller of an electronic teaching system using a main controller with integrated signal processing according to the present invention.

2 is a perspective view showing an exemplary appearance for the teaching of the electronic teaching system according to the present invention.

3 is a block diagram showing a specific configuration of an electronic teaching system according to the present invention.

4 is a conceptual diagram schematically showing a rear portion of the main controller according to the present invention;

5 is a conceptual diagram illustrating a multi-split display screen by the PIP display module according to the present invention illustratively.

6 is a conceptual diagram schematically illustrating a concept of tag designation by a tag setting unit according to the present invention;

<Explanation of symbols for the main parts of the drawings>

10: main controller 120: setting module

11: integrated signal processor 121: condition setting unit

13: Integrated USB Port 130: Self Diagnostic Module

20: peripheral device group 131: diagnostic signal transmitter

30: teaching 200: PIP display module

40: training content database 210: tag setting unit

50: lecture data database 220: tag ranking unit

110: linkage module 230: search term input unit

240: matching unit 250: display unit

Claims (6)

Electronic teaching system using main controller with integrated signal processing A peripheral device group selected from peripheral devices including a video output device having a video / audio input / output function, a microphone, a monitor, a beam projector, a screen, a speaker, a computer having a DB server function for storing educational contents, and lecture materials; A main controller connected to individual peripheral devices in the peripheral device group to control the peripheral devices; Consists of receiving the main controller; The main controller, An integrated signal processor for performing integrated signal processing by connecting an audio / video / network cable of a computer among the peripheral devices through one integrated USB port; A diagnostic signal transmitter for transmitting a diagnostic signal to the individual peripheral device at a predetermined cycle, and a status output unit for detecting and processing the peripheral device as an abnormal situation when the peripheral device receiving the diagnostic signal transmits an abnormal signal or there is no response. An electronic teaching system using a main controller having an integrated signal processing function, comprising: a self-diagnosis module. The method of claim 1, The main controller, And a PIP display module having a display unit for providing PIP screens for simultaneously displaying lecture materials and educational contents on a single screen, wherein the electronic teaching system using the main controller having an integrated signal processing function. 3. The method of claim 2, The PIP display module, A tag setting unit for designating a tag functioning as a headword function related to a topic of the education content and storing the tag in a file header of the education content; A search word input unit which inputs and processes a specific word included in the lecture data as a search word; And a matching unit which matches and searches for educational content having a tag corresponding to the search word. The display unit, Recognizing the lecture material as a first screen, and the education content retrieved by the matching unit to recognize the second screen, characterized in that to display the first and second screens on one screen, with an integrated signal processing function Electronic teaching system using the main controller. The method of claim 3, The tag setting unit, Assign a plurality of tags to one training content and generate them as tag groups, The PIP display module, And a tag ranking designator configured to set a ranking for each tag group. The matching unit, And matching ranking means for transmitting the ranking information of the tags contained in the plurality of searched educational contents to the display. The display unit, Further comprising a tag rank linkage determining means for selecting and recognizing and displaying training contents including a tag having a priority among a plurality of training contents including rank information on a second screen. Electronic teaching system using main controller. delete delete

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