KR20110006210A - Method for providing two-way remote lecture and apparatus - Google Patents

Abstract

PURPOSE: A bidirectional remote lecture providing method and an apparatus thereof for supplying online bidirectional remote lecture through information communications network are provided to supply more advanced point-to-multipoint real-time remote by watching a lecture video. CONSTITUTION: A lecture room server(200) comprises next. A first encoding unit is connected to a camera unit and a microphone unit and generates a first encoding signal. A first encoding signal transmitter is connected the information network to a classroom server(300). The first encoding signal is transmitted to the remote classroom. A second encoding signal receiver receives a second encoding signal toward the situation of the remote classroom.

Description

Method and providing two-way remote lecture and apparatus

The present invention relates to a method for providing an online two-way remote lecture, and more particularly, to a method and apparatus for providing an online two-way remote lecture in real time by connecting one or more classrooms attended by an instructor and one or more classrooms attended by an information communication network.

In general, online lectures, which are serviced online, are generally instructor-oriented one-way lectures using the Internet, airwaves, CATV, and satellite broadcasting. In the conventional online distance lecture, a simple pre-recorded and edited lecture video is transmitted to a student's terminal, etc. However, such a unidirectional injectable lecture not only maintains the interest of the student but also has no interaction between the student and the instructor. There is a problem that the effectiveness and class completion rate falls.

In order to overcome this problem, on the basis of advanced platforms such as IPTV, a lecture method capable of online interactive communication has been proposed. The IPTV platform has the effect that the instructor and the student, the student, through the predetermined interface can further interact with each other than the existing one through the interaction. However, even in this manner, for example, if a student wishes to answer or answer a question during a lecture, the instructor must deliver text information through typing using an interface device that is difficult to respond to immediately while watching the lecturer. And it is difficult for a student to respond immediately during class, and this problem is more prominent when there are a large number of students. In addition, there is a difficulty in applying the above-described method in a real-time lecture, such as a query that is difficult to express by keyboard typing.

The present invention has been made to solve the above-described difficulties, the present invention provides a lecturer and students in the classroom and the students in a plurality of remote classrooms through each other as if the instructor and students geographically separated from each other in the same classroom It aims to provide two-way remote lecture that enables one-to-many real-time lecture, question and answer while watching the video.

In addition, the present invention receives the voice and video of the students through the input device installed in a plurality of remote classrooms to provide the instructor in real time, to provide a two-way remote lecture to respond to the immediate question or answer instead of keyboard typing during class For other purposes.

In addition, when a student in a plurality of remote classrooms attempts to inquire or answer a question, the student or the remote classroom can be synthesized on the currently displayed screen by using a picture in picture (PIP) method and displayed on one screen together. Another objective is to provide two-way tele-lectures to all participants in the class, making it easier to identify the situation.

In order to achieve the above object, there is provided a bidirectional remote lecture providing method according to a preferred embodiment of the present invention, comprising: (a) receiving a lecture image from an input device; (b) generating a first encoded signal by encoding the reception result of step (a); And (c) transmitting the first encoded signal to a classroom server through an information communication network.

(C) thereafter, (d) receiving a second encoded signal for an image of a remote classroom from the classroom server; (e) decoding the second encoded signal; And (f) transmitting the result decoded in step (e) to an output device.

In order to achieve the above object, a bidirectional remote lecture providing apparatus according to a preferred embodiment of the present invention, an encoding unit for receiving a lecture image from the input device, and encodes the reception result to generate a first encoded signal; And a composite image transmitter for transmitting the first encoded signal to a classroom server through an information communication network.

A second encoded signal receiver configured to receive a second encoded signal for an image of a remote classroom from the classroom server; And a second decoding unit which decodes the second encoded signal.

According to a preferred embodiment of the present invention, more advanced one-to-many real-time remote lectures are provided by viewing lecture images and voices of a lecturer in a classroom where a plurality of students are separated from each other through a display device installed in a classroom. It can work.

In addition, the present invention receives the voice and video of the students through the input device installed in a plurality of remote classrooms to provide the instructor in real time, to provide a two-way remote lecture to respond to the immediate question or response, rather than keyboard typing during class For other purposes.

In addition, the present invention has the effect of improving the understanding of the learning through the real-time by providing the video and questions of the students in the PIP form between the remote classrooms located in different areas in each video screen.

Hereinafter, an apparatus and method for providing bidirectional remote lectures according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings.

1 is a view schematically showing the technical configuration of a bidirectional remote lecture providing apparatus according to an embodiment of the present invention.

As shown, the bi-directional remote lecture providing apparatus of the present invention, the lecturer through the information transfer between the lecture room 100 and the remote classroom 400 geographically separated, the instructor (T) enters the lecture Various input / output devices (C, M, D, A), classroom server 200, classroom server 300, a plurality of students (S) are installed in the classroom 100 to proceed to watch the class Includes input and output devices (C, M, D, A) installed in the remote classroom 400.

In more detail, an input device is installed at one end of the lecture room 100 to capture and input a lecture proceeding by the instructor T, and such an input device is a lecturer, learning contents, and a whiteboard written by the instructor. It includes a camera (C) for photographing the lecture situation progressed by the instructor in real time and a microphone (M) for receiving the voice of the instructor.

The classroom server 200 encodes the data photographed and inputted from the camera C and the microphone unit M into a predetermined format that the display apparatus D installed in the remote classroom 400 can output. Generates an encoded signal, and sends it to the classroom server 300 through the information communication network. At this time, H.264 or MP4 is preferable as the encoding format to be applied.

In addition, the classroom server 200 receives a second encoding signal encoded in a predetermined format by receiving the input of the class progress of the remote classroom 400 transmitted from the classroom server 300, and decodes the classroom 100 The display device (D) and the speaker device (A) installed in the) serves to output. Here, when the speaker device (A) installed in the lecture room 100 is separately installed at one end of the lecture room 100, the microphone (S) is input at the same time as the voice of the instructor, howling (howling) may occur, such as In order to prevent the phenomenon, it is preferable to be implemented as a wireless earphone device worn by an instructor directly in a wearable type.

The classroom server 300 receives a first encoded signal from the classroom server 200 through an information communication network, decodes it, and provides a display device D and a speaker device A of the corresponding remote classroom 400 for output. Perform the function.

In addition, the classroom server 300 receives the progress of the students of each classroom from the input device installed in the remote classroom 400, encodes it and sends it to the classroom server 200 through the information communication network to the classroom 100 It performs the function of providing the output to the display device (D) and the speaker device (A) installed. In order to perform this function, each remote classroom 400 is provided with a camera (C) and a microphone (M) for receiving the appearance of students and their queries. The camera C and the microphone M installed in the remote classroom 400 are preferably installed on the ceiling or the wall of the remote classroom 400 to receive a plurality of students' appearances and voices.

In accordance with the above-described technical configuration, the bidirectional remote lecture providing apparatus of the present invention provides a one-to-many real-time online remote lecture between the instructor and the student at a distance. Hereinafter, a technical configuration of a classroom server in a bidirectional remote lecture providing apparatus according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

2 is a view showing the technical configuration of the classroom server of the bidirectional remote lecture providing apparatus of the present invention.

As shown, the classroom server 200 is connected to the camera unit 112 and the microphone unit 114 installed at one end of the classroom, the first encoding unit 230 for generating a first encoding signal, classroom server 300 And a first encoded signal transmitter 266 for transmitting a first encoded signal to a teleclassroom and a second encoded signal receiver 262 for receiving a second encoded signal that is information about a situation of a teleclassroom. ), A second decoding unit 270 that decodes the second encoded signal into video and audio, and an output unit 280 that outputs video and audio. Here, the first encoding unit 230 is composed of video and audio encoders 232 and 234 encoding video and audio, respectively, and the second decoding unit 270 converts the second encoded signal into video and audio, respectively. Video and audio decoders 272 and 274.

In addition, the classroom server 300 is connected to the camera unit 412 and the microphone 414 installed at one end of the classroom, in contrast to the classroom server 200 described above, the second encoding unit 330 for generating a second encoded signal. ), A second encoded signal transmitter 366 for transmitting a second encoded signal to the classroom server 200, a first encoded signal receiver 362 for receiving a first encoded signal that is information about a classroom, 1 includes a first decoding unit 370 for decoding the encoded signal into a video and audio, and an output unit 480 for outputting the decoded video and audio. Here, the second encoding unit 330 is composed of video and audio encoders 332 and 334 encoding video and audio, respectively, and the first decoding unit 370 converts the first encoded signal into video and audio, respectively. Video and audio decoders 372 and 374.

In addition, as another form, some or all of the functions implemented by the classroom server 200 and the classroom server 300 may be included in a terminal that is separately programmed in the classroom server 200 and the classroom server 300 by client programming. . As an example, the output units 180 and 480 connected to the classroom server 200 and the classroom server 300 may be replaced by a terminal having a computing function capable of executing a program, such as a general-purpose laptop computer, instead of a simple display device function. In addition, the encoding units 230 and 330 and the decoding units 270 and 370 of the classroom server 200 and the classroom server 300 may be installed in each terminal as a client program to perform a corresponding function.

According to the above-described technical configuration, the bidirectional remote lecture providing apparatus of the present invention performs a function of providing a lecture through a terminal connected to a classroom server and a classroom server to a plurality of students distant from the instructor, thus one-to-many form Provide real-time online lectures. Hereinafter, a bidirectional remote lecture providing apparatus according to another embodiment of the present invention with reference to the drawings. In another embodiment, the structure of the classroom server is the same as that of the embodiment shown in FIG. 2, and the following description focuses on the structure of the classroom server having characteristics that are different from the above-described embodiment.

3 is a diagram illustrating a technical configuration of a classroom server of a bidirectional remote lecture providing apparatus according to another embodiment of the present invention.

As shown, the classroom server according to another embodiment of the present invention further includes a PIP control unit 650 and a P / T communication unit for supporting the PIP function in addition to the first encoding unit and the second decoding unit. In detail, the first encoding unit 630 may encode an image encoder 632 for encoding a situation in a lecture room taken by the camera unit 512 into a predetermined format, and a voice of an instructor detected by the microphone unit 514. A voice encoder 634 is received and encoded into a predetermined format, and performs the function of providing the PIP control unit 650 with the generated first encoded signal.

The PIP controller 650 uses the first encoding signal provided from the first encoding unit 630 and the second encoding signal corresponding to the second encoding signal corresponding to the image of the remote classroom transmitted from the classroom server 700. And a first synthesized signal is synthesized by PIP. Thereafter, the generated first composite signal is transmitted to the classroom server 700 through the composite signal transmitter 666. Here, the PIP method is a method of simultaneously displaying two different images on one screen, and preferably, a part of the screen corresponding to the first encoding signal is present in the remote classroom designated by the operation of the instructor's interface unit 540. Display the situation at the same time. The first synthesis signal described above is provided to the classroom server 700 through the synthesis signal transmitter 666, and an example of a screen corresponding to the first synthesis signal is illustrated in FIG.

In addition, the PIP controller 650 may further include a function of editing and outputting an image captured by a camera installed in a remote classroom according to the operation of the instructor's interface unit 540 or controlling a display method. The PIP controller 650 generates and generates a second synthesized signal for display on the output unit 580 and the second decoder 670 in response to the instructor's manipulation. This function is for focusing the remote classroom or the student, or the instructor to observe the class attitude of the students in a particular remote classroom when the students in the remote classroom to perform a query or presentation. The PIP controller 650 divides and displays images of several connected remote classrooms on one screen, and displays an enlarged image of the selected remote classroom than other remote classroom images when the instructor selects one remote classroom. . In order to perform this function, the PIP controller 650 adjusts Pan / Tilt and Zoom / Focus of the camera installed in the corresponding remote classroom through the classroom server P / T communication unit 664. In this case, the instructor may operate the interface unit 540 to insert subtitles, etc. required for lecture progression at one end of the screen. The contents of such subtitles may include lecture contents and information for identifying the corresponding remote classroom. Particularly, the output unit 580 viewed by the instructor displays a plurality of remote classroom images on one screen, and thus it is difficult to distinguish where each remote classroom is by using only the video. Is used. The PIP control unit 650 inserts the caption into the screen of the corresponding remote classroom in response to the operation of the interface unit 540. As described above, the functions of selecting a remote classroom and inserting subtitles correspond to operations of the instructor's interface unit 540. The interface unit 540 may be implemented as an LCD touch screen on a display device as well as an interface device used in a general computer terminal such as a keyboard or a mouse. The instructor can easily switch the screen of the currently focused remote classroom to another screen by touching the remote classroom displayed on the screen instead of manipulating an interface device separately provided to select a specific remote classroom during the lecture. An example of a screen corresponding to the second composite signal generated by the above operation is illustrated in FIG. 5. As shown in the drawing, it is possible to divide an image of each remote classroom into a predetermined number and to select an object to be focused so that the viewer can view the image more loudly.

In addition, as another form, some or all of the functions implemented by the classroom server 600 and the classroom server 700 may be included in a terminal that is separately provided in the classroom server 600 and the classroom server 700 by client programming. . As an example, the output unit 580 connected to the classroom server 600 is replaced with a terminal having a computing function capable of executing a program, such as a general-purpose laptop computer, instead of a simple display device function, and the classroom server 600 and The encoding unit 630 and the decoding unit 670 of the classroom server may be installed in each terminal as a client program to implement a corresponding function.

According to the above-described technical configuration, the bidirectional remote lecture providing apparatus of the present invention, in addition to the ability to receive a lecture through the terminal connected to the classroom server and classroom server, a plurality of students away from the instructor in the course of the lecture, It can provide more advanced two-way distance lectures as needed. Hereinafter, a bidirectional remote lecture providing method according to a preferred embodiment of the present invention with reference to the drawings. In the following description, the reference numerals shown in FIG. 2 will be described together.

6 is a view showing a bidirectional remote lecture providing method according to a preferred embodiment of the present invention.

As shown, the bidirectional remote lecture providing method of the present invention, the lecture room server 200 first receives the lecture video and audio input from the camera unit 212 and the microphone unit 214 installed in the classroom (S610), The first encoding unit 230 converts the received video and audio to generate a first encoded signal (S620). The first encoded signal generated in step S620 is sent to the first encoded signal receiving unit 362 of the classroom server 362 to which the first encoded signal transmitter 266 is connected through the information communication network (S630). The 1 encoded signal is decoded in the form of video and audio by the first decoding unit 370 and provided to the output unit 380. Also, the classroom server 300 encodes the video and audio of the lecture room input from the camera unit 412 and the microphone 414 installed in the remote classroom by a second encoding signal receiving unit 262 of the classroom server 200. The second encoded signal transmitter 366 receives the received signal (S640), and the second decoder 270 decodes the received second encoded signal into a video and audio form (S650). 200 transmits the video and audio converted in step S650 to the output unit 180 (S660).

According to the above-described technical steps, the bidirectional remote lecture providing method of the present invention can provide a lecture through a terminal connected to a classroom server and a classroom server to a plurality of students distant from the instructor. Thus, one-to-many real-time online lectures can be provided. Hereinafter, a bidirectional remote lecture providing method according to another embodiment of the present invention with reference to the drawings. In the following description, the reference numerals shown in FIG. 3 will be described together.

7 is a view showing a bidirectional remote lecture providing method according to another embodiment of the present invention.

As shown, the bidirectional remote lecture providing method of the present invention, the classroom server 600 first receives the lecture video and audio input from the camera unit 512 and the microphone 514 installed in the classroom (S710), The first encoding unit 630 converts the received video and audio to generate a first encoding signal and provides the first encoding signal to the PIP controller 650 (S720). In addition, the second encoding receiver 662 receives the second encoded signal from the classroom server 700 and provides it to the PIP controller 650 (650). Thereafter, the PIP controller 650 synthesizes the first and second encoded signals by PIP in response to the instructor's operation of the interface unit 540 to generate the first and second synthesized signals. Here, the above-described first and second synthesized signals are signals corresponding to the screen displayed on the output unit 580 of the remote classroom and the lecture room, respectively. The instructor controls the Pan / Tilt and Zoom / Focus of the camera installed in the remote classroom by operating the interface unit 540 to concentrate the student who performs the question or the answer and the corresponding remote classroom on the displayed screen. The above-described Pan / Tilt control is to control the rotation / angle of the camera, and Zoom / Focus is to control the focus of the camera and the like to enlarge / focus the subject. The classroom server P / T communication unit 664 transmits a signal for such control to the classroom server 700 (S742). The PIP controller 650 receives the second encoded signal reflecting the manipulation through the second encoded receiver 662 and generates the first and second composite signals (S750). The unit 666 transmits the above-described first composite signal to the classroom server 700 (S760), and the second decoding unit 670 decodes the second composite signal and converts it into an image and audio signal. (S770). In addition, the instructor may adjust the volume of the voice output from the classroom server by operating the interface unit 540 when the volume of the voice signal reproduced through the output unit 580 is too large or small.

According to the above-described technical method, the method of providing a bidirectional remote lecture of the present invention is not only a function of receiving a lecture through a terminal connected to a classroom server and a classroom server by a plurality of students away from the instructor, but also in proceeding with the lecture. At the time of inquiry and presentation, the focus on the student and the remote classroom can be controlled, providing a more advanced two-way distance lecture.

The technical spirit of the present invention has been described above with reference to the accompanying drawings, but this is by way of example only and not intended to limit the present invention. In addition, it is a matter of course that various modifications and variations are possible without departing from the scope of the technical idea of the present invention by anyone having ordinary skill in the art.

1 is a view schematically showing the technical configuration of a bidirectional remote lecture providing apparatus according to an embodiment of the present invention.

2 is a view showing the technical configuration of the classroom server of the bidirectional remote lecture providing apparatus of the present invention.

3 is a diagram illustrating a technical configuration of a classroom server of a bidirectional remote lecture providing apparatus according to another embodiment of the present invention.

4 is an example of a screen corresponding to the first composite signal transmitted by the bidirectional remote lecture providing apparatus of the present invention.

5 is an example of a screen corresponding to the second composite signal transmitted by the bidirectional remote lecture providing apparatus of the present invention.

6 is a view showing a bidirectional remote lecture providing method according to a preferred embodiment of the present invention.

7 is a view showing a bidirectional remote lecture providing method according to another embodiment of the present invention.

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

112: camera portion 114: microphone portion

180: output unit 200: classroom server

230: First encoding unit 262: Second encoding signal receiving unit

266: first encoding signal transmitter 270: second decoding unit

300: classroom server 330: second encoding unit

362: first encoded signal receiver 366: second encoded signal transmitter

370: First decoding unit 412: Camera unit

414: microphone 480: output

Claims (4)

As a method of providing online two-way remote lectures, (a) receiving a lecture image from an input device; (b) generating a first encoded signal by encoding the reception result of step (a); And, (c) transmitting the first encoded signal to a classroom server through an information communication network; Bidirectional remote lecture providing method comprising a. The method of claim 1, After (c), (d) receiving a second encoded signal for an image of a remote classroom from the classroom server; (e) decoding the second encoded signal; And (f) transmitting the result decoded in step (e) to the output device; Bidirectional remote lecture providing method comprising a. An encoding unit configured to receive a lecture image from an input device and to encode a reception result to generate a first encoded signal; And A composite image transmitter for transmitting the first encoded signal to a classroom server through an information communication network Bidirectional remote lecture providing device comprising a. The method of claim 3, wherein A second encoded signal receiver configured to receive a second encoded signal for an image of a remote classroom from the classroom server; And A second decoding unit to decode the second encoded signal Bidirectional remote lecture providing device further comprising a.

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