KR102488472B1 - Internet lecture recording and uploading system - Google Patents

Abstract

The present invention relates to an internet lecture photographing and uploading system. The system includes: a photographing means for recording lecture content; an encoding part that encodes video and audio data streams input from the photographing means and automatically converts the data streams into a lecture video; an uploading part that automatically uploads the lecture video converted by the encoding part to an assigned channel; and a notification part that extracts keywords and topics of the corresponding lecture and notifies that a new lecture is uploaded when a user who is taking a lecture logs in.

Description

Filming and uploading system of internet lecture {INTERNET LECTURE RECORDING AND UPLOADING SYSTEM}

The present invention processes a video lecture generated at the lecture site, uploads the processed video on the web, automatically creates content for each use, extracts keywords and topics of the lecture, and logs in the user taking the lecture. The present invention relates to a filming and uploading system for an Internet lecture that can notify that a new lecture has been uploaded in the case of a new lecture.

Recently, information exchange through the Internet has been used in almost all industries that require video, such as Internet broadcasting stations and distance education, with the development of filming equipment that shoots videos and encoders that produce videos. A variety of content development is also taking place.

In general, in order to produce content provided on the Internet, lectures, etc. are filmed with filming equipment at sites such as academies, and the filmed sources (video and voice, etc.) are encoded and edited so that they can be provided on the Internet in an editing room. We create content that is serviced through the Internet.

Therefore, in order to disclose content on the Internet, it is necessary to provide a service as content by uploading it on the Internet so that the source of the produced video can be provided to a user requesting it.

In this way, in order to produce contents disclosed on the Internet, a lecture is filmed as a video at an academy, encoded and edited, classified and stored to provide services on the Internet, and implemented as a video lecture service through a web server.

However, since a large number of equipment and software are required to produce such content, there is a problem in that a system for controlling each step of producing such content and professional personnel who operate the same are also required.

In addition, it is not easy for ordinary people, such as private academy instructors, to directly film their own lectures and produce content for video lectures at the site, such as private academies. There are problems such as having to know how to handle this expensive and specialized software and related equipment.

On the other hand, the above-mentioned background art is technical information that the inventor possessed for derivation of the present invention or acquired in the process of derivation of the present invention, and cannot necessarily be said to be known art disclosed to the general public prior to filing the present invention. .

Korea Patent Registration No. 10-2010343

The present invention processes video lectures generated at the lecture site, uploads the processed videos on the web, and automatically creates content for each use, extracts keywords and topics of the lecture, and allows users who are taking the lecture to log in In one case, a filming and uploading system for an Internet lecture is provided to notify that a new lecture has been uploaded.

Another object of the present invention is to expand the size of the blackboard and expand additional blackboards as needed to write lecture contents, thereby minimizing the situation in which the blackboard needs to be erased during the lecture. of shooting and uploading system.

Another object of the present invention is to provide a recording and uploading system for Internet lectures capable of automatically erasing lecture contents written on a blackboard.

Another object of the present invention is to provide a recording and uploading system for Internet lectures capable of automatically removing chalk powder from an eraser that erases a blackboard.

The technical problem of the present invention is not limited to the technical problem mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the following description.

A system for filming and uploading an Internet lecture according to an embodiment of the present invention includes: a photographing means for photographing lecture content; and a blackboard portion disposed in front of the photographing means and provided for the lecturer to describe lecture contents.

And, an encoding unit that encodes the video and audio data streams input from the photographing means and automatically converts them into lecture videos; an uploading unit that automatically uploads the lecture video converted by the encoding unit to an assigned channel; and a notification unit for extracting keywords and topics of the corresponding lecture and notifying that a new lecture has been uploaded when a user taking the course logs in, wherein the notification unit extracts keywords and subject information of the lecture and determines whether the extracted information is new information. If the information is new, it is determined that a new lecture has been uploaded, and it is notified that there is newly uploaded information while the user is logged in.

In addition, an erasing unit provided to erase the contents of the lecture written on the blackboard; and a removal unit that is spaced apart from the blackboard unit by a predetermined distance and removes foreign substances buried in the erasing unit.

The blackboard unit may include a center blackboard unit having entrances on both sides and an empty space therein; a partition wall dividing the empty space of the center blackboard unit into a first partition space and a second partition space; first side blackboard units accommodated in pairs in the first partition space; second side blackboard units accommodated in pairs in the second compartment space; a first development unit which moves the first side blackboard units in a direction away from each other and protrudes from the first partitioned space of the center blackboard unit; and a second development unit which moves the second side blackboard units in a direction away from each other and protrudes from the second partitioned space of the center blackboard unit.

In addition, the first development unit may include a first movable body installed on an upper surface of the first side blackboard unit and movable in left and right directions along a first movement guide hole formed on an upper surface of the center blackboard unit; a first shaft for guiding movement of the first movable body in left and right directions; and a first motor for rotating the first shaft in a forward or reverse direction so as to bring the first side blackboard unit into or out of the first compartment space.

The second development unit may include a second movable body installed on the upper surface of the second side blackboard unit and movable in left and right directions along the second movement guide hole formed on the upper surface of the center blackboard unit; a second shaft for guiding movement of the second movable body in left and right directions; and a second motor for rotating the second shaft in a forward or reverse direction so as to bring the second side blackboard unit into or out of the second compartment space.

In addition, the erasing unit may include an eraser unit for erasing chalk buried on the front surface of the center blackboard unit; a pocket portion in which a predetermined area of the eraser portion is fixed to an inner space; a first magnet part buried in the inner space of the pocket part; a second magnet part disposed to face the eraser part in the first compartment of the center blackboard unit and having a polarity opposite to that of the first magnet part so that the eraser part remains in contact with the front surface of the center blackboard unit; an X-axis moving cylinder for reciprocating the second magnet part in the X-axis direction; and a Z-axis moving cylinder for elevating the X-axis moving cylinder.

And, the removal unit, the storage unit in which the pocket unit is accommodated; a deformable bar of elastic material installed on the ceiling surface of the storage unit and formed in a sinusoidal shape to be compressed or expanded; an additional pocket portion installed on a lower surface of the deformable bar and having a receiving groove formed on the lower surface to receive the pocket portion; a third magnet part embedded in the ceiling surface of the pocket part and having a polarity opposite to that of the second magnet part so that the pocket part is fixed by magnetic force of the second magnet part; a vibration generating unit compressing or expanding the deformation bar so that the eraser fixed to the pocket unit vibrates; a hitting unit that repeatedly strikes the eraser at predetermined time intervals; and a suction unit disposed below the pocket unit and sucking chalk powder separated from the eraser unit by the vibration generating unit and the hitting unit.

In addition, the vibration generating unit, a first horizontal bar coupled to one side and the other side of the deformation bar, respectively; Pressing blocks spaced apart by a predetermined interval to the lower side of the first horizontal bar; and a first lifting cylinder which lifts the pressing block relative to the horizontal bar so that the deformable bar is compressed or expanded.

In addition, the hitting unit may include a square frame disposed below the eraser unit; a mesh plate installed in the inner space of the square frame; a second horizontal bar installed on an inner wall surface of the storage unit, coupled to an end of the square frame, and formed of a metal material; a housing disposed below the second horizontal bar and having an access hole formed on an upper surface thereof; a second lift cylinder accommodated in the inner space of the housing and operating at a predetermined time interval from the first lift cylinder; And a fourth magnet part that moves in and out of the entrance hole while being moved up and down by the second lift cylinder, is magnetically attached to the second horizontal bar when it is lifted, and is separated from the second horizontal bar when it is lowered into the inner space of the housing. and, when the fourth magnet unit is separated from the second horizontal bar, the second horizontal bar is elastically bent upward so that the mesh plate strikes the eraser unit.

According to one aspect of the present invention described above, it is possible to process a video lecture generated at the lecture site, upload the processed video on the web, automatically generate content for each use, and extract keywords and topics of the lecture. Therefore, when a user who is taking a course logs in, it has the effect of notifying that a new lecture has been uploaded.

In addition, the size of the blackboard can be expanded, and additional blackboards can be expanded as needed to write lecture contents, thereby minimizing the situation in which the blackboard needs to be erased during the lecture.

In addition, there is an effect of automatically erasing the contents of the lecture written on the blackboard.

In addition, a filming and uploading system for Internet lectures capable of automatically removing chalk powder from an eraser for erasing a blackboard is provided.

Effects of the present invention are not limited to the effects mentioned above, and various effects may be included within a range apparent to those skilled in the art from the contents to be described below.

1 is a perspective view showing a photographing means and a blackboard applied to a filming and uploading system of an Internet lecture according to an embodiment of the present invention.
Figure 2 is a block diagram of the entire system to which the filming and uploading system of the Internet lecture according to an embodiment of the present invention is applied.
Figure 3 is a block diagram showing the internal configuration of the filming means applied to the filming and uploading system of the Internet lecture according to an embodiment of the present invention.
Figure 4 is a block diagram showing the connection relationship between the recording means and the encoding server applied to the filming and uploading system of the Internet lecture according to an embodiment of the present invention.
5 is a block diagram showing the internal configuration of a media server applied to the system for filming and uploading Internet lectures according to an embodiment of the present invention.
6 is a block diagram sequentially illustrating a method for automatically generating content for a lecture in a recording and uploading system for an Internet lecture according to an embodiment of the present invention.
7 is a perspective view illustrating a center blackboard unit and an erase unit applied to a system for filming and uploading an Internet lecture according to an embodiment of the present invention;
8 is a diagram showing a coupling relationship between a side blackboard unit and a development unit applied to a system for filming and uploading an Internet lecture according to an embodiment of the present invention.
9 is a plan view illustrating a state in which a side blackboard unit applied to a system for filming and uploading an Internet lecture according to an embodiment of the present invention is deployed by a deployment unit.
10 is a side view showing a state in which a side blackboard unit and an eraser are installed in a center blackboard unit in a recording and uploading system for an Internet lecture according to an embodiment of the present invention.
11 is a diagram showing a removal unit applied to the filming and uploading system of an Internet lecture according to an embodiment of the present invention.
12 is a diagram showing a hitting unit applied to the filming and uploading system of an Internet lecture according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The detailed description of the present invention which follows refers to the accompanying drawings which illustrate, by way of illustration, specific embodiments in which the present invention may be practiced. These embodiments are described in sufficient detail to enable one skilled in the art to practice the present invention. It should be understood that the various embodiments of the present invention are different from each other but are not necessarily mutually exclusive. For example, specific shapes, structures, and characteristics described herein may be implemented in another embodiment without departing from the spirit and scope of the invention in connection with one embodiment. Additionally, it should be understood that the location or arrangement of individual components within each disclosed embodiment may be changed without departing from the spirit and scope of the invention. Accordingly, the detailed description set forth below is not to be taken in a limiting sense, and the scope of the present invention, if properly described, is limited only by the appended claims, along with all equivalents as claimed by those claims. Like reference numbers in the drawings indicate the same or similar function throughout the various aspects.

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the drawings.

1 is a perspective view showing a recording means and a blackboard applied to a recording and uploading system of an Internet lecture according to an embodiment of the present invention, and FIG. 2 is a perspective view to which the recording and uploading system of an Internet lecture according to an embodiment of the present invention is applied. Figure 3 is a block diagram of the entire system, and Figure 3 is a block diagram showing the internal configuration of the filming means applied to the filming and uploading system of Internet lectures according to an embodiment of the present invention, Figure 4 is a block diagram showing the internal structure of the filming unit Figure 5 is a block diagram showing the connection relationship between the filming means and the encoding server applied to the filming and uploading system of Internet lectures according to the present invention, and FIG. 6 is a block diagram showing, in order, a method for automatically generating content for a lecture in a filming and uploading system for an Internet lecture according to an embodiment of the present invention.

A filming and uploading system 1 of an Internet lecture according to an embodiment of the present invention includes a filming means 10, an encoding server 20, a media server 30, a web server 40, and an encoding unit. (21), an uploading unit 22, a notification unit 23, a blackboard unit 50, an erasing unit 60, and a removal unit 70 may be included.

The photographing means 10 may include a known camera 11 to photograph the contents of a lecture conducted by a lecturer.

The camera 11 is spaced apart from the front of the blackboard 50 by a predetermined distance and is mounted on the upper surface of the tripod-shaped cradle 14 to capture the entire area of the blackboard 50 at a certain height away from the ground.

Although it is a common case that the encoding server 20, the filming means 10, the media server 30, and the web server 40 are interconnected in a wired communication method, filming and uploading of Internet lectures according to an embodiment of the present invention. Since the encoding server 20 in the system is not limited to a wired communication method, a wired communication method as well as a wireless communication method may be applied.

When a lecture is filmed at a site such as an academy through the filming means 10, the encoding server 20 encodes video and audio stream data and signals received from the filming means 10 in real time and converts them into lecture videos.

The encoding server 20 can convert/edit into a form capable of providing video lectures over the Internet.

For example, the encoding server 20, when video and audio are input together or individually or multiple video or audio signals are input from the photographing means 10, converts them into one or several lecture videos or deletes unnecessary parts. etc. can be edited.

That is, the encoding server 20 can automatically and easily generate lecture videos.

In addition, when logging in to the web server 40 through user authentication, the encoding server 20 may download a broadcast schedule list of content for a lecture video scheduled to be filmed in advance from the web server 40 or check it in real time.

That is, the encoding server 20 may select a broadcast scheduled item that the user wants to record and record the lecture. The encoding server 20 can easily start a content creation process according to the user's broadcast schedule list by using the user's scheduled broadcast schedule list.

Here, the content refers to a form that has been processed to be available on the Internet by classifying sources such as video and audio so as to provide services to consumers who want to be provided through the Internet.

In addition, the broadcast schedule list may include one or more of user information of a corresponding user using the encoding server 20, scheduled broadcast date and time, broadcast identification number, and broadcast title.

According to the present invention, each user sets a broadcast schedule list, selects one broadcast schedule item from the broadcast schedule list, and encodes video and audio streams input according to the selected broadcast schedule, so that individual content for the user can be created. there is.

In addition, the encoding server 20 matches the input data stream with the above-described broadcasting schedule list and transmits the encoded lecture video through the Internet or network for each broadcast schedule list for the user. At this time, the media server 30 connected to the network can classify according to the input broadcast schedule list and automatically store the lecture video.

Although it is known technology that the encoding server 20, the photographing means 10, the media server 30, and the web server 40 are interconnected by a wired communication method, the encoding server 20 according to an embodiment of the present invention is wired. Since it is not limited to, a communication method may also be applied to a wired communication method as well as a wireless communication method.

When a lecture is filmed at a site such as an academy through the filming means 10, the encoding server 20 encodes video and audio stream data and signals received from the filming means 10 in real time and converts them into lecture videos.

The encoding server 20 can convert/edit into a form capable of providing video lectures over the Internet. For example, the encoding server 20, when video and audio are input together or separately from the recording means 10, or when multiple video or audio signals are input, converts them into one or several lecture videos, or removes unnecessary parts. You can edit, delete, etc.

That is, the encoding server 20 can automatically and easily generate lecture videos.

In addition, when logging in to the web server 40 through user authentication, the encoding server 20 may download a broadcast schedule list of content for a lecture video scheduled to be filmed in advance from the web server 40 or check it in real time.

That is, the encoding server 20 may select a broadcast scheduled item that the user wants to record and record the lecture.

The encoding server 20 can easily start a content creation process according to the user's broadcast schedule list by using the user's scheduled broadcast schedule list.

Here, the content refers to a form processed so that sources such as video and audio are classified to provide services to consumers who want to be provided through the Internet and the like, and disclosed on the Internet.

In addition, the broadcast schedule list may include one or more of user information of a corresponding user using the encoding server 20, scheduled broadcast date and time, broadcast identification number, and broadcast title.

According to the present invention, each user sets a broadcast schedule list, selects one broadcast schedule item from the broadcast schedule list, and encodes video and audio streams input according to the selected broadcast schedule, so that individual content for the user can be created. there is.

In addition, the encoding server 20 matches the input data stream with the above-described broadcasting schedule list and transmits the encoded lecture video through the Internet or network for each broadcast schedule list for the user.

At this time, the media server 30 connected to the network can classify according to the input broadcast schedule list and automatically store the lecture video.

In addition, the encoding server 20 may transmit the lecture video in real time or selectively transmit it when the shooting of the corresponding lecture video is completed.

That is, the encoding server 20 can automatically encode the signals captured by the photographing means 10 and individually convert them into lecture videos without a separate operation and upload them to the media server 30 .

In addition, the encoding server 20 may control the video of the lecture video generated through recording, stopping, previewing, etc. when encoding a signal input from the photographing means 10.

That is, the encoding server 20 can generate necessary lecture videos without directly controlling the recording means 10 by controlling the recording of the video or audio signals input from the photographing means 10.

The media server 30 stores the lecture video uploaded from the encoding server 20 and matches the lecture video with a broadcast schedule list in which the content to be filmed is recorded to be uploaded as contents for the video lecture on the web server 40. can do.

That is, as described above, since the content selected by the user from the broadcasting schedule list is generated through the encoding server 20 and uploaded to the media server 30, the content is automatically selected according to the broadcasting schedule list without separately controlling the media server 30. It can be created by linking .

In addition, the media server 30 manages the video lectures uploaded from the encoding server 20, duplicates the file so that the contents for the video lecture are configured through the web server 40, and automatically creates data related to the content of the configured web page. can do.

The web server 40 may provide the user with each corresponding content when the user purchases the content.

Figure 3 is a block diagram showing the internal configuration of the photographing means 10 of the present invention. As shown in FIG. 2, the photographing means 10 includes a plurality of cameras 11 fixedly installed in the lecture hall for the convenience of photographing, a microphone 13 for receiving the voice of the lecturer, and a camera 11. It consists of a camera control unit 12 that can automatically adjust the shooting direction, zoom-in, zoom-out, brightness, etc.

The camera control unit 12 may be controlled through a remote controller (not shown) using wireless communication or an IR signal. That is, the user can easily control the recording of the lecture in the lecture hall. The microphone 13 is composed of a wired microphone 13 or a transmitter (not shown) worn by the instructor for lectures and a receiver (not shown) attached to the camera 11 to input voice data in a wireless manner. may receive

4 is a block diagram showing the internal configuration of the encoding server 20 according to the present invention.

As shown in FIG. 4, the encoding server 20 is composed of an encoding unit 21, an uploading unit 22, a broadcast schedule list monitoring unit 24, and a control unit 25. Here, the broadcasting schedule list monitoring unit 24 may monitor the web server 40 so that a broadcast schedule list previously reserved for each user may be downloaded from the web server 40 or checked in real time.

In addition, the broadcasting schedule list monitoring unit 24 may selectively notify the user according to a predetermined deadline of the broadcasting schedule list. In addition, the broadcasting schedule list monitoring unit 24 transmits user information to the web server 40 to check the broadcasting schedule list from the web server 40 and performs authentication for the corresponding user, thereby providing separate broadcasting for each user. You can view the scheduled list.

That is, when user authentication is completed in the web server 40, the web server 40 can check the broadcast schedule list for the user with the corresponding user information, so that several users can use it simultaneously.

According to the broadcasting schedule currently selected from the broadcasting schedule list for the corresponding user searched by the broadcasting schedule list monitoring unit 24, the encoding unit 21 encodes the video and audio data streams input from the photographing means 10 so that the corresponding user's It plays the role of converting lecture videos that match the broadcast schedule.

Alternatively, the encoding unit 21 may set and use a separate editing function in advance or set it during encoding.

The uploading unit 22 serves to transmit the encoded lecture video matched with the above-described broadcast schedule list through the encoding unit 21 to the media server 30 through the Internet or network over wired or wireless networks as streaming data.

That is, the lecture video transmitted from the uploading unit 22 is classified and stored on the media server 30 according to the broadcast schedule list for each user.

At this time, the control unit 25 converts and edits the signal input from the photographing unit 10 into a digital signal in the encoding unit 21 to generate an encoded lecture video, and puts the generated lecture video on a broadcast schedule list for each user. Accordingly, by uploading to the media server 30 through the uploading unit 22, the content to be serviced through the Internet is created.

That is, the controller 25 classifies the generated video according to the content broadcast schedule list checked by the broadcast schedule list monitoring unit 24 and controls the upload to the web server 40 . In addition, the system for filming and uploading Internet lectures according to an embodiment of the present invention includes a keypad (not shown) having a plurality of buttons for controlling content to be automatically generated, and a display (not shown) for displaying a video recording and broadcast schedule list. city) may be further included.

The keypad may include buttons capable of controlling operations (recording, stopping, previewing, uploading, etc.) of the encoding server 20 . For example, a keypad is attached to the side of a blackboard in a lecture hall, etc., so that the instructor can start, complete, pause, edit, transmit to the media server 30, etc. You can control all functions of That is, the user can easily control a series of processes for creating content through the keypad.

In addition, a separate key conversion means (not shown) may be further added to control the encoding server 20 by converting a specific button of the keypad into a command corresponding to the function of the button input when pressed.

The display displays the current operating state (encoding, upload, broadcast schedule list, preview, etc.) of the encoding server 20 on the screen so that the user can control the encoding server 20 by manipulating the keypad.

The notification unit 23 extracts keywords and topics of the corresponding lecture and notifies that a new lecture has been uploaded when a user who is taking the lecture logs in.

Specifically, the notification unit 23 extracts the keyword and subject information of the lecture, determines whether the extracted information is new information, and if it is new information, determines that a new lecture has been uploaded, and newly uploaded while the user is logged in. inform that information is available.

5 is a block diagram showing the internal structure of a system for filming and uploading Internet lectures according to an embodiment of the present invention.

As shown in FIG. 5, the media server 30 includes a content storage unit 31, a broadcast schedule list storage unit 32, and a broadcast schedule list matching unit 33.

The broadcast schedule matching unit 33 may refer to the actual broadcast schedule list stored in the broadcast schedule list storage unit 32 to distinguish streaming data input from the encoding server 20 according to the user's broadcast schedule list.

At this time, the content storage unit 31 stores the content by specifying folder and file names according to the broadcast schedule list for each user in the broadcast schedule list storage unit 32 .

That is, in order to service the video lecture on the Internet, it is classified and stored for each user and provided to the web server 40 .

Here, the broadcast schedule list storage unit 32 stores a content broadcast schedule list for content to be started in the actual broadcast schedule list web server 40 . Therefore, the media server 30 automatically connects the lecture video uploaded from the encoding server 20 to the broadcast schedule list on the web server 40, so that no separate system operation is required to disclose the content on the Internet. will be.

Hereinafter, with reference to FIG. 6, a method for automatically generating content for a system for filming and uploading a video lecture according to an embodiment of the present invention will be described.

The encoding server 20 performs user login through the web server 40 (S10). In other words, when the user presses the login button on the keypad or inputs user information, the user is authenticated through the web server 40 and logged in.

At this time, the login screen is displayed on the display. Next, the encoding server 20 downloads the broadcasting schedule list of the user logged in from the web server 40 or displays it on the display so that it can be checked in real time, so that the user selects the schedule of the content to be recorded (S20). .

As described above, the user can easily proceed with filming with the filming means 10 by selecting a schedule to be filmed currently from among a list of broadcast schedules displayed on the display at the lecture site.

Next, the lecture is photographed through the photographing means 10 (S30). That is, the photographing state of the camera 11 fixedly installed in a lecture room or the like is adjusted by manipulating the camera control unit 12 to take a picture.

Here, in the lecture to be photographed, the audio of the microphone 13 is input together with the video.

At this time, the encoding server 20 encodes the video and audio data signals input from the photographing means 10 and generates lecture videos according to the broadcast schedule list for each user (S40).

That is, the video and audio signals input from the photographing unit 10 are automatically converted in the encoding unit 21 and converted into one or several lecture videos.

Subsequently, the encoding server 20 automatically uploads the lecture video to the media server 30 according to the user's broadcast schedule list (S50).

In addition, the encoding server 20 separately displays the broadcast schedule list selected in step S20 or classifies them accordingly and uploads them to the media server 30 .

At this time, the media server 30 compares the streaming data received according to the broadcast schedule of the broadcast schedule list selected by the user with the user's preset broadcast schedule list, classifies it, and stores it as content (S60).

That is, content is linked to each broadcast schedule list in the media server 30 .

Finally, the media server 30 publishes the generated content on the web server 40 and provides a service so that the consumer can use it (S70).

As such, the system for filming and uploading Internet lectures according to an embodiment of the present invention has an excellent effect in that a user can easily control a series of processes directly in the field of an online video lecture.

In addition, since the contents of the lecture video are classified according to the broadcast schedule list for each user, the user can easily create the contents for the video service on the Internet automatically.

Next, referring to FIGS. 7 to 12, a blackboard unit, an erasure unit, and a removal unit applied to the system for filming and uploading an Internet lecture according to an embodiment of the present invention will be described.

7 is a perspective view showing a center blackboard unit and an erase unit applied to a recording and uploading system for an Internet lecture according to an embodiment of the present invention, and FIG. 8 is a perspective view of a recording and uploading system for an Internet lecture according to an embodiment of the present invention. 9 is a plan view showing a state in which the side blackboard unit applied to the shooting and uploading system of an Internet lecture according to an embodiment of the present invention is deployed by the deployment unit. 10 is a side view showing a state in which a side blackboard unit and an eraser are installed in the center blackboard unit in a recording and uploading system for an Internet lecture according to an embodiment of the present invention, and FIG. 11 is an Internet lecture according to an embodiment of the present invention. It is a diagram showing a removal unit applied to a recording and uploading system of a lecture, and FIG. 12 is a diagram showing a striking unit applied to a recording and uploading system of an Internet lecture according to an embodiment of the present invention.

The blackboard unit 50 is disposed in front of the photographing means 10 .

The blackboard unit 50 is provided so that the instructor writes the contents of the lecture with chalk, and includes a center blackboard unit 51, a partition wall 52a, a first side blackboard unit 53, and a second side blackboard unit ( 54), and a first deployment unit 55 and a second deployment unit 56.

The center blackboard unit 51 is installed on the wall of the classroom.

Entrances are formed on both sides of the center blackboard unit 51, and an empty space is formed therein.

The front of the center blackboard unit 51 is used for the instructor to write lecture contents with chalk.

The partition wall 52a is disposed in the center of the empty space of the center blackboard unit 51.

Due to the partition wall 52a, the empty space of the center blackboard unit 51 is divided into a first partition space 51a and a second partition space 51b.

The first side blackboard unit 53 is composed of two pairs.

The first side blackboard unit 53 is accommodated in the first partitioned space 51a.

One side surfaces of the first side blackboard unit 53 facing each other may contact each other at the center of the first compartment space 51a. At this time, the entirety of the first side blackboard unit 53 maintains a state of being completely drawn into the first compartment space 51a.

The first side blackboard unit 53 is drawn out of the first compartment space 51a or drawn into the first compartment space 51a by the first deployment unit 55 .

In addition, when the first side blackboard unit 53 is drawn out from the first partitioned space 51a, the lecturer may write the contents of the lecture on the front surface of the first side blackboard unit 53 with chalk.

The second side blackboard unit 54 is composed of two pairs.

The second side blackboard unit 54 is accommodated in the second partitioned space 51b.

Thus, the second side blackboard unit 54 is located behind the first side blackboard unit 53.

One side surfaces of the second side blackboard unit 54 facing each other may contact each other at the center of the second compartment space 51b. At this time, the entirety of the second side blackboard unit 54 maintains a state of being completely drawn into the second compartment space 51b.

The second side blackboard unit 54 is drawn out of the second partitioned space 51b or drawn into the second partitioned space 51b by the second deployment unit 56 .

And, when the second side blackboard unit 54 is drawn out from the second partitioned space 51b, the lecturer may write the contents of the lecture on the front of the second side blackboard unit 54 with chalk.

The first development unit 55 moves the first side blackboard units 53 in a direction away from each other and protrudes them from the first partition space 51a of the center blackboard unit 51, and the first movable body 551 and One shaft 552 and a first motor 553 may be included.

The first movable body 551 is composed of two pairs and coupled to the upper surfaces of the pair of first side blackboard units 53, respectively.

The first movable body 551 may be formed in a substantially ring shape, and a spiral is formed on the inner periphery.

The lower surface of the first movable body 551 is coupled to the upper surface of the first side blackboard unit 53, and moves in the left and right directions along the first movement guide hole 51c formed on the upper surface of the center blackboard unit 51. A first moving bar 5511 is formed.

The first shaft 552 is horizontally disposed above the first movement guide hole 51c.

The first shaft 552 has a spiral to which the first movable body 551 is fastened along the outer periphery along the longitudinal direction.

The first shaft 552 is rotated in a forward or reverse direction by a first motor 553 to be described later, and guides the movement of the first movable body 551 in left and right directions.

At this time, a first support ring 511 supporting the first shaft 552 is formed on the upper surface of the center blackboard unit 51 .

That is, the end of the first shaft 552 may be rotated in place while being supported in the inner hollow of the first support ring 511 .

The first motor 553 may be formed of an AC motor or a DC motor in which a motor shaft rotates in a forward or reverse direction.

The first motor 553 may be configured as a pair of two and coupled to the end of the first shaft 552, respectively.

The first motor 553 may be controlled by a remote controller (not shown).

At this time, the remote control may be possessed by the instructor. A first forward button for rotating the motor shaft of the first motor 553 in a forward direction and a first reverse button for rotating the motor shaft of the first motor 553 in a reverse direction may be formed on the remote control.

When the first side blackboard unit 53 is accommodated in the first compartment space 51a, the first movable body 551 is located in the center of the center blackboard unit 51. In this state, pressing the first forward button When the motor shaft of the first motor 553 is rotated in the forward direction, the first shaft 552 is rotated in the forward direction, so that the first movable body 551 located on the left side with reference to FIGS. 8 and 9 is located on the left side. It moves to the left side of the first shaft 552, and the first movable body 551 located on the right side moves to the right side of the first shaft 552 located on the right side. As a result, the pair of first side blackboard units 53 are drawn out to the left and right sides of the center blackboard unit 51, respectively.

Therefore, in a state where the first side blackboard unit 53 is accommodated in the first compartment space 51a, there is no space for the lecturer to write the contents of the lecture on the entire center blackboard unit 51 and to write on the center blackboard unit 51 any more. If there is none, press the first forward button to draw out the first side blackboard unit 53 and write the content to be lectured additionally.

Meanwhile, when the first side blackboard unit 53 is to be inserted into the first partitioned space 51a, the motor shaft of the first motor 553 is rotated in the reverse direction by pressing the first reverse button.

When the first reverse button is pressed, the first shaft 552 is rotated in a reverse direction, and the first side blackboard unit 53 is drawn into the first partitioned space 51a.

The second development part 56 moves the second side blackboard units 54 in a direction away from each other and protrudes them from the second partitioned space 51b of the center blackboard unit 51, and the second movable body 561 and Two shafts 562 and a second motor 563 may be included.

The second movable body 561 is composed of two pairs and coupled to the upper surfaces of the pair of second side blackboard units 54, respectively.

The second movable body 561 may be formed in a substantially ring shape, and a spiral is formed on the inner periphery.

The lower surface of the second movable body 561 is coupled to the upper surface of the second side blackboard unit 54, and moves in the left and right directions along the second movement guide hole 51d formed on the upper surface of the center blackboard unit 51. A second moving bar 5611 is formed.

The second shaft 562 is horizontally disposed above the second movement guide hole 51d.

A spiral to which the first movable body 551 is fastened is formed on the outer periphery of the second shaft 562 along the longitudinal direction.

The second shaft 562 is rotated in a forward or reverse direction by a second motor 563 to be described later, and guides the movement of the second moving body 561 in left and right directions.

At this time, a second support ring 512 supporting the second shaft 562 is formed on the upper surface of the center blackboard unit 51 .

That is, the end of the second shaft 562 may rotate in place while being supported in the inner hollow of the second support ring 512 .

The second motor 563 may be formed of an AC motor or a DC motor in which a motor shaft rotates in a forward or reverse direction.

The second motor 563 may be configured as a pair of two and coupled to the end of the second shaft 562, respectively.

The second motor 563 may be controlled by the aforementioned remote controller (not shown).

A second forward button for rotating the motor shaft of the second motor 563 in a forward direction and a second reverse button for rotating the motor shaft of the second motor 563 in a reverse direction may be formed on the remote control.

When the second side blackboard unit 54 is accommodated in the second compartment space 51b, the second movable body 561 is located in the center of the center blackboard unit 51. In this state, pressing the second forward button When the motor shaft of the second motor 563 is rotated in the forward direction, the second shaft 562 is rotated in the forward direction, so that the second movable body 561 located on the left side with reference to FIGS. 8 and 9 is located on the left side. It moves to the left side of the second shaft 562, and the second movable body 561 located on the right side moves to the right side of the second shaft 562 located on the right side. As a result, the pair of second side blackboard units 54 are drawn out to the left and right sides of the center blackboard unit 51, respectively.

Therefore, in a state where the second side blackboard unit 54 is accommodated in the second partitioned space 51b, the instructor writes the contents of the lecture on the center blackboard unit 51 and the first side blackboard unit 53, and the center blackboard unit ( 51) and the first side blackboard unit 53, when there is no more space to write, the first reverse button is pressed to bring the first side blackboard unit 53 into the first partitioned space 51a, 2 Press the forward button to draw out the second side blackboard unit 54 and write the contents to be additionally lectured.

Therefore, the system for filming and uploading an Internet lecture according to an embodiment of the present invention can minimize the occurrence of a situation in which an instructor has to erase the contents of the lecture written on the blackboard with an eraser in the course of giving a lecture. It is possible to prevent a situation in which the lecture is interrupted while deleting the contents of the lecture.

Meanwhile, when the second side blackboard unit 54 is to be inserted into the second partitioned space 51b, the motor shaft of the second motor 563 is rotated in the reverse direction by pressing the second reverse button.

When the second reverse direction button is pressed, the second shaft 562 is rotated in a reverse direction, and the second side blackboard unit 54 is drawn into the second partitioned space 51b.

Meanwhile, the erase unit 60 is provided to erase lecture contents written in chalk on the center blackboard unit 51 .

7 and 10, the erasing unit 60 includes an eraser unit 61, a pocket unit 62, a first magnet unit 63, a second magnet unit 64, X It may include an axis moving cylinder 65 and a Z axis moving cylinder 66 .

The eraser unit 61 erases the chalk on the front surface of the center blackboard unit 51 .

Since the eraser unit 61 is identical to a known eraser for chalk, a detailed description thereof will be omitted.

The pocket part 62 may have a structure in which one surface is open and an accommodation groove in which the eraser part 61 is accommodated is formed.

A certain area of the eraser part 61 is accommodated in the receiving groove, and the remaining area protrudes out of the pocket part 62 so that lecture contents written in chalk on the center blackboard unit 51 can be erased.

A fixing groove is formed on the inner surface of the pocket part 62, and the first magnet part 63 is fixed to the fixing groove.

The first magnet part 63 attaches the eraser part 61 to the front surface of the center blackboard unit 51 by interaction with the second magnet part 64 .

The second magnet part 64 is disposed to face the eraser part 61 in the first compartment space 51a of the center blackboard unit 51 .

The second magnet part 64 is formed to have a polarity opposite to that of the first magnet part 63 .

Therefore, when the eraser part 61 is brought into contact with the place where the second magnet part 64 is located on the front side of the center blackboard unit 51, the second magnet part 64 forms the first part with the center blackboard unit 51 therebetween. It is attached through the magnet part 63 and magnetic force, so that the eraser part 61 maintains contact with the front surface of the center blackboard unit 51 .

In addition, when the second magnet part 64 is moved in left and right directions and up and down directions through the X-axis moving cylinder 65 and the Y-axis moving cylinder, which will be described later, the eraser part 61 moves the center blackboard unit 51 The contents of the lecture are erased while moving along the moving direction of the second magnet part 64 on the front side of the.

At this time, an additional partition wall 52b for partitioning a space where the first side blackboard unit 53 is located and a space where the second magnet part 64 is located may be further installed in the first partition space 51a. .

The X-axis moving cylinder 65 may be formed as a linear cylinder or a rodless cylinder.

The X-axis moving cylinder 65 reciprocates the second magnet part 64 in left and right directions.

The Z-axis moving cylinder 66 is fixed to the additional partition wall 52b.

The Z-axis moving cylinder 66 is formed as a linear cylinder or a rodless cylinder and moves the X-axis moving cylinder 65 up and down.

The Z-axis moving cylinder 66 may be applied in plurality to stably elevate the Z-axis moving cylinder 66 .

The above-described remote control is formed with a left direction button for moving the piston of the X-axis moving cylinder 65 in the left direction and a right direction button for moving the piston in the right direction.

And, the remote control is formed with a rising button for raising the piston of the Z-axis moving cylinder 66 and a falling button for lowering the piston.

Therefore, the X-axis moving cylinder 65 and the Z-axis moving cylinder 66 are controlled by the left direction button, right direction button, up button, and down button so that the eraser unit 61 moves upward from the front of the center blackboard unit 51. , can be moved in the left and right directions.

In the recording and uploading system of an Internet lecture according to an embodiment of the present invention, the lecturer can easily erase the contents of the lecture written on the center blackboard unit 51 even in place through the erasing unit 60 .

In addition, the lecturer only needs to erase the content of the lecture that the eraser unit 61 could not erase.

Meanwhile, the removal unit 70 is configured to automatically remove foreign substances, that is, chalk powder, from the eraser unit 61 .

As shown in FIGS. 11 and 12, the removal unit 70 includes a storage unit 71, a deformable bar 72, an additional pocket unit 62, a third magnet unit 74, and vibration generation. It may include a part 75, a striking part 76 and a suction part 77.

The storage unit 71 may be disposed in a lecture room.

The storage unit 71 may be formed in a box shape with an open front and an empty space therein.

The pocket portion 62 to which the eraser portion 61 is fixed is accommodated in the empty space of the accommodating portion 71 .

The front open area of the storage unit 71 may be opened and closed by a door.

Closing the open area with a door prevents chalk powder from flying into the classroom.

The deformable bar 72 is installed vertically on the ceiling surface of the storage unit 71 .

The deformable bar 72 is installed on the ceiling surface of the housing part 71 . The deformed bar 72 is formed in a sine wave shape and is made of a metal material.

Since the deformed bar 72 is formed in a sine wave shape, it includes valleys 721 and ridges 722 that continuously intersect each other in the vertical direction.

Therefore, the deformable bar 72 is compressed to a certain level by an external force, and when the external force is dissipated, it expands and returns to its original shape.

The additional pocket portion 62 is installed at the lower end of the deformable bar 72. The additional pocket portion 62 has a receiving groove in which the pocket portion 62 is accommodated is formed on the bottom surface.

The third magnet part 74 is embedded in the ceiling surface of the pocket part 62, and the pocket part 62 has a polarity opposite to that of the second magnet part 64 so that the pocket part 62 is fixed by the magnetic force of the second magnet part 64. have

The vibration generating unit 75 compresses or expands the deformation bar 72 so that vibration is generated in the eraser unit 61 fixed to the pocket unit 62 .

The vibration generating unit 75 may include a first horizontal bar 751 , a pressure block 752 and a first lift cylinder 753 .

The first horizontal bar 751 is coupled to one side and the other side of the deformable bar 72, respectively.

The pressing block 752 is spaced apart from the lower side of the first horizontal bar 751 by a predetermined interval.

The first lift cylinder 753 may be formed as a hydraulic cylinder.

The first lift cylinder 753 is accommodated in the inner space of the accommodating unit 71 .

A pressure block 752 is coupled to an upper end of the piston of the first lift cylinder 753.

The pressing block 752 presses the first horizontal bar 751 upward while being raised by the first lifting cylinder 753, thereby compressing the deformable bar 72 to a certain level.

And, when the first lifting cylinder 753 lowers the pressing block 752, the pressing force applied to the first horizontal bar 751 is released and the deformation bar 72 expands, thereby causing the eraser unit 61 to Vibration is generated and the chalk powder buried in the eraser part 61 is dropped.

At this time, some of the chalk powder falls through the through holes 7621 of the mesh plate 762 to be described later.

The impact unit 76 may include a square frame 761, a mesh plate 762, a second horizontal bar 763, a second lift cylinder 765, and a fourth magnet unit 766.

The square frame 761 is disposed to be spaced apart from the lower side of the eraser unit 61 by a predetermined interval.

The mesh plate 762 is installed in the inner space of the square frame 761.

A plurality of through holes 7621 for passing chalk powder are formed in the mesh plate 762 .

The second horizontal bar 763 is installed on the inner wall surface of the housing part 71 .

The end of the second horizontal bar 763 is coupled to the outer surface of the square frame 761.

The second horizontal bar 763 may be formed of a material to which a fourth magnet part 766 to be described later is magnetically attached.

For example, the second horizontal bar 763 is formed of a metal material or has a polarity opposite to that of the fourth magnet part 766 .

At this time, if the first lift cylinder 753 is disposed on the inner left and right sides of the storage part 71, the second horizontal part 763 is installed on the rear wall surface of the storage part 71.

The housing 764 is disposed below the second horizontal bar 763.

An entrance hole 7641 is formed on the upper surface of the housing 764, and an empty space in which the second lift cylinder 765 is accommodated is formed.

The second lift cylinder 765 is accommodated in the inner space of the housing 764.

The second lift cylinder 765 may be formed as a hydraulic cylinder.

The fourth magnet part 766 is coupled to the upper end of the piston of the second lift cylinder 765 .

When the piston of the second lift cylinder 765 is raised, the fourth magnet part 766 protrudes upward from the housing 764 through the entrance hole 7641 and is magnetically attached to the second horizontal bar 763.

Also, when the fourth magnet part 766 descends, the second horizontal bar 763 is bent downward.

At this time, the fourth magnet part 766 is bent downward and comes into contact with the upper surface of the housing 764 .

Accordingly, when the fourth magnet part 766 is lowered and accommodated in the inner space of the housing 764, the fourth magnet part 766 is separated from the second horizontal bar 763.

And, when the fourth magnet part 766 is separated from the second horizontal bar 763, the second horizontal bar 763 elastically bends upward to the bottom of the eraser part 61 of the mesh plate 762. to hit Accordingly, the chalk powder on the eraser part 61 falls.

At this time, the second lift cylinder 765 may be programmed to operate at a predetermined time interval while operating at a predetermined time interval with the first lift cylinder 753 .

For example, a start button (not shown) may be provided on the housing 764 to sequentially operate the first lift cylinder 753 and the second lift cylinder 765 .

When the start button is pressed, the first lift cylinder 753 is operated first to raise and lower the piston.

At this time, the deformation bar 72 repeatedly compresses and expands elastically by the lifting operation of the pressing block 752, and as time passes, the degree of compression and expansion gradually weakens, and eventually maintains its original state.

For example, if the time required for the deformable bar 72 to maintain its original state is 10 seconds, the first lifting cylinder 753 raises and lowers the pressure block 752 once every 10 seconds.

Also, the first lift cylinder 753 may be programmed to stop operating after about 1 minute, and then the second lift cylinder 765 operates.

In addition, the second horizontal bar 763 is elastically and repetitively bent in the up and down directions by the lifting operation of the fourth magnet part 766. As time passes, the degree of bending gradually weakens, and eventually returns to its original state. will keep

For example, if the time required for the second horizontal bar 763 to maintain its original state is 10 seconds, the second lift cylinder 765 lifts the fourth magnet part 766 once every 10 seconds.

The suction part 77 sucks chalk powder separated from the eraser part 61 by the vibration generating part 75 and the striking part 76.

The suction unit 77 may include a suction hopper 771 disposed below the additional pocket unit 62 and a suction fan 772 for sucking air.

That is, when the suction fan 772 sucks air, the chalk powder separated from the eraser part 61 by the vibration generating part 75 and the striking part 76 is sucked through the suction hopper 771.

Chalk powder sucked by the suction fan 772 may be collected in a separate collection box (not shown).

The system for filming and uploading Internet lectures according to an embodiment of the present invention can easily remove chalk powder from the eraser unit 61 through the removal unit 70 .

In addition, through the eraser unit 60 described above, it is possible to prevent the instructor from inhaling chalk powder in the process of erasing the blackboard unit 50, and also inhaling the chalk powder in the process of removing the chalk powder from the eraser unit 61. can prevent doing so.

Furthermore, since erasing the blackboard part 50 and removing chalk powder from the eraser part 61 are automatically performed, the instructor's convenience can be improved.

The above-described embodiments are for illustrative purposes, and those skilled in the art to which the above-described embodiments belong can easily transform into other specific forms without changing the technical spirit or essential features of the above-described embodiments. You will understand. Therefore, it should be understood that the above-described embodiments are illustrative in all respects and not restrictive. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as distributed may be implemented in a combined form.

The scope to be protected through this specification is indicated by the following claims rather than the detailed description above, and should be construed to include all changes or modifications derived from the meaning and scope of the claims and equivalent concepts thereof. .

10: shooting means 11: camera
12: camera control unit 13: microphone
14: cradle 20: encoding server
21: encoding unit 22: uploading unit
23: notification unit 24: broadcast scheduled list monitoring unit
25: control unit 30: media server
31: content storage unit 32: broadcast schedule list storage unit
33: broadcast scheduled list matching unit 40: web server
50: blackboard unit 51: center blackboard unit
51a: first compartment space 51b: second compartment space
52a: partition wall 52b: additional partition wall
53: first side blackboard unit 54: second side blackboard unit
55: first deployment unit 551: first moving body
5511: first moving bar 552: first shaft
553: first motor 56: second deployment unit
561: second moving body 5611: second moving bar
562: second shaft 563: second motor
60: eraser unit 61: eraser unit
62: pocket part 63: first magnet part
64: second magnet part 65: X-axis moving cylinder
66: Z-axis moving cylinder 70: removal part
71: storage unit 72: deformation bar
73: additional pocket portion 74: third magnet portion
75: vibration generating unit 751: first horizontal bar
752: pressurization block 753: first lift cylinder
76: hitting part 761: square frame
762: mesh plate 7621: through hole
763: second horizontal bar 764: housing
765: second lifting cylinder 766: fourth magnet part
77: suction part 771: suction hopper
772: suction fan

Claims (3)

photographing means for photographing lecture contents; and
It is disposed in front of the photographing means and includes a blackboard portion provided for the lecturer to write the contents of the lecture,
The blackboard part,
A center blackboard unit with entrances formed on both sides and an empty space formed therein;
a partition wall dividing the empty space of the center blackboard unit into a first partition space and a second partition space;
first side blackboard units accommodated in pairs in the first partition space;
second side blackboard units accommodated in pairs in the second compartment space;
a first development unit which moves the first side blackboard units in a direction away from each other and protrudes from the first partitioned space of the center blackboard unit;
A second development unit which moves the second side blackboard units in a direction away from each other and protrudes from the second partitioned space of the center blackboard unit;
The first development unit,
first movable bodies installed on the upper surfaces of the first side blackboard units and movable in left and right directions along the first movement guide holes formed on the upper surfaces of the center blackboard units;
a first shaft for guiding movement of the first movable body in left and right directions;
A first motor that rotates the first shaft in a forward or reverse direction to bring the first side blackboard unit into or out of the first compartment space;
The second development unit,
a second movable body installed on the upper surface of the second side blackboard unit and movable in left and right directions along the second movement guide hole formed on the upper surface of the center blackboard unit;
a second shaft for guiding movement of the second movable body in left and right directions;
A second motor that rotates the second shaft in a forward or reverse direction to bring the second side blackboard unit into or out of the second compartment space;
an erasing unit provided to erase lecture contents written on the center blackboard unit; and
Further comprising a removal unit spaced apart from the blackboard unit by a predetermined distance and removing foreign substances buried in the erasing unit,
The erasing part,
an eraser unit for erasing chalk on the front surface of the center blackboard unit;
a pocket portion in which a predetermined area of the eraser portion is fixed to an inner space;
a first magnet part buried in the inner space of the pocket part;
a second magnet part disposed to face the eraser part in the first compartment of the center blackboard unit and having a polarity opposite to that of the first magnet part so that the eraser part remains in contact with the front surface of the center blackboard unit;
an X-axis moving cylinder for reciprocating the second magnet part in the X-axis direction; and
Including; Z-axis moving cylinder for elevating the X-axis moving cylinder,
the removal unit,
a storage unit in which the pocket unit is accommodated;
a deformable bar of elastic material installed on the ceiling surface of the storage unit and formed in a sinusoidal shape to be compressed or expanded;
an additional pocket portion installed on a lower surface of the deformable bar and having a receiving groove formed on the lower surface to receive the pocket portion;
a third magnet part embedded in the ceiling surface of the pocket part and having a polarity opposite to that of the second magnet part so that the pocket part is fixed by magnetic force of the second magnet part;
a vibration generating unit compressing or expanding the deformation bar so that the eraser fixed to the pocket unit vibrates;
a hitting unit that repeatedly strikes the eraser at predetermined time intervals; and
A suction unit disposed below the pocket unit and sucking chalk powder separated from the eraser unit by the vibration generating unit and the hitting unit;
The vibration generating unit,
A first horizontal bar coupled to one side and the other side of the deformable bar, respectively;
Pressing blocks spaced apart by a predetermined interval to the lower side of the first horizontal bar; and
And a first lifting cylinder for lifting the pressure block relative to the horizontal bar so that the deformation bar is compressed or expanded.
the striking part,
a square frame disposed below the eraser unit;
a mesh plate installed in the inner space of the square frame;
a second horizontal bar installed on an inner wall surface of the storage unit, coupled to an end of the square frame, and formed of a metal material;
a housing disposed below the second horizontal bar and having an access hole formed on an upper surface thereof;
a second lift cylinder accommodated in the inner space of the housing and operating at a predetermined time interval from the first lift cylinder; and
A fourth magnet part that enters and exits the entrance hole while being moved up and down by the second lift cylinder, is magnetically attached to the second horizontal bar when it is lifted, and is separated from the second horizontal bar when it is lowered into the inner space of the housing. and
When the fourth magnet unit is separated from the second horizontal bar, the second horizontal bar is elastically bent upward so that the mesh plate hits the eraser unit.
According to claim 1,
an encoding unit that encodes the video and audio data streams input from the photographing unit and automatically converts them into lecture videos;
an uploading unit that automatically uploads the lecture video converted by the encoding unit to an assigned channel; and
Extracting keywords and topics of the lecture and further including a notification unit notifying that a new lecture has been uploaded when a user who is taking the lecture logs in,
The notification unit extracts the keyword and subject information of the lecture, determines whether the extracted information is new information, and if it is new information, determines that a new lecture has been uploaded, and indicates that there is newly uploaded information while the user in the course is logged in. A system for filming and uploading online lectures.
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