KR102031739B1 - Interactive whiteboard supporting real-time internet broadcasting by constructing a lecture screen according to the class progress mode separately from the display screen - Google Patents

Abstract

Disclosed is an interactive whiteboard supporting real-time internet broadcasting by constructing a lecture screen according to a class progress mode separately from a display screen. The interactive whiteboard according to an embodiment saves the cost of equipping external devices by configuring a multi-view screen for a plurality of multimedia inputs through a built-in mixer, and automatically configuring an internet broadcasting screen separated from a display screen according to a class progress mode and transmitting it. So, it is possible to provide a realistic lecture screen reflecting a lecture environment and improve learning efficiency at the same time. The interactive whiteboard includes a video input part, an audio input part, a mixer part, a video processing part, an audio processing part, and an encoding and streaming part.

Description

Interactive whiteboard supporting real-time internet broadcasting by constructing a lecture screen according to the class progress mode separately from the display screen}

The present invention relates to an interactive whiteboard for constructing a separate lecture screen distinguished from a screen displayed on an interactive whiteboard display including an electronic blackboard or an electronic lecture table and transmitting the same to a real-time Internet broadcast. The present invention relates to an interactive whiteboard for transmitting a multi-view screen composed of a plurality of inputs without an external device to an Internet broadcast.

An electronic board or electronic desk receives images from peripheral devices such as PCs, laptops and A / V players in classrooms or conference rooms of schools, academies, public institutions, and corporations, and outputs images on the display. It has a basic function of outputting voice through an audio amplifier or a directly connected speaker.

In general, the classroom is equipped with a variety of multimedia devices such as lecture PC or mobile terminal, lecturer camera, student camera, student mobile terminal, lecturer microphone, student microphone. In such a system, a plurality of video devices can be connected to an image input unit, but two or more images cannot be displayed on the screen at the same time. In addition, it is not possible to provide an interface for receiving and outputting an image transmitted through a network from an instructor or a student's mobile terminal or receiving input from a plurality of audio devices. In addition, it is difficult to share the lecture screen to the outside through streaming.

According to an embodiment of the present disclosure, a built-in internet broadcasting module including a mixer and a streaming module provides a function of real-time broadcasting of a lecture screen separated from a display screen of an electronic board or an electronic lecture table through an internet broadcast without a separate internet transmission system. It provides an interactive whiteboard that can automatically configure and provide Internet broadcasting screens according to the class progress mode by providing the 'lecture screen composition scenario' function.

According to an embodiment of the present invention, an interactive whiteboard includes a video input unit for receiving an image signal, an audio input unit for receiving an audio signal, and a mixer configured to selectively configure a plurality of input images and input audios, respectively, to synthesize a lecture screen. And an image processor for processing the synthesized image through the image or mixer received from the image input unit and outputting the synthesized image through the display, and processing the synthesized audio through the audio or mixer unit received from the audio input unit and outputting the synthesized audio through the speaker. An audio processing unit and an encoding and streaming unit for encoding the video and audio synthesized through the mixer unit for streaming the lecture screen for real-time Internet broadcasting.

The mixer unit comprises an event detection unit for detecting an event occurring during a lecture, a mode determination unit for determining a class progress mode according to the detected event, and a screen configuration for composing a lecture screen by synthesizing an image according to the determined class progress mode. It may include wealth.

The event detector detects an event that receives a presentation request message from the student terminal and then sends a message acknowledging it or sends an announcement request message to the student terminal and then detects an event that receives a message accepting the message from the student terminal. Mode is determined, and if it detects an event that receives a question request message from the student terminal and transmits a message to approve it, it is determined as the student query mode, if it detects the writing, it is determined as the writing mode, the student presentation mode, student query mode and If it is not in writing mode, it can be judged as instructor presentation mode.

The screen configuration unit displays the writing screen in the instructor presentation mode and the writing mode, the student presentation material screen in the student presentation mode, and the student question material screen in the student inquiry mode, when the display screen of the electronic desk or copyboard is configured. Can be configured.

The screen unit may divide the lecture screen into a display screen and an internet broadcast screen, and configure the Internet broadcast screen separately from the display screen.

The screen composition unit displays the instructor camera video screen in the instructor presentation mode, the writing screen in the writing mode, and the multi view screen including the student presentation material screen and the student camera video in the student presentation mode. In the query mode, the Internet broadcast screen may be configured to display a student question screen and a multi-view screen including a student camera image and an instructor camera image.

The screen configuration unit may vary the number of combined images and the screen configuration according to the number of input / output images.

The screen composition unit configures the lecture screen according to the class progress mode including at least one of writing mode, lecturer presentation mode, student presentation mode, student query mode, real imager mode, DVD viewing mode, and remote connection mode. You can configure the screen differently accordingly.

The mixer sets preset lecture screen composition scenarios including screen composition templates according to the class progress mode, sets multi view screen composition information composed of multiple inputs at the time of setting, or sets single view screen composition information composed of only one input. It may include a scenario setting unit for separately setting the screen and the template of the Internet broadcast screen.

The interactive whiteboard further includes a communication unit that receives an image from an external device and transmits and receives a control signal through a network, and the mixer unit receives an image from an external device through the communication unit and synthesizes the image together with the image input through the image input unit. have.

According to the interactive whiteboard that supports real-time Internet broadcasting by constructing a lecture screen according to the class progress mode separately from the display screen according to an embodiment, the multi-view for a plurality of multimedia inputs is configured using only the interactive whiteboard without a separate external device. And selective switching can provide various lecture screens. In addition, by providing a real-time Internet broadcasting function can be added to the practicality and at the same time can reduce the cost required to equip the external device for Internet broadcasting. There is no need for installation and wiring for internet broadcasting, so there is almost no trouble and convenient operation.

In addition, the display screen and Internet broadcasting screen configuration can be set differently so that the screen is shared optimally and more realistic lecture screens are provided to remote students in real time. Improve the quality of your work and create convenient lecture content.

In addition, by providing 'screen composition scenario' function and the screen suitable for the situation of the lecture, you can deliver the site more realistically and increase the concentration of the lecture. For example, in the case of an Internet broadcasting screen, the class progress mode changes such as a situation where an instructor writes on an electronic board or looks at a student while teaching, and a student presents an assignment or asks an instructor using his or her mobile terminal. When it is possible, the screen can be configured to effectively recognize the object that needs to be concentrated in the situation, so that the lecture site can be delivered more realistically.

In order to change the screen configuration in a general system, the instructor has to select the optimal template from the list of menus and then click or tap to select it. Therefore, the instructor takes time to pay attention to the additional settings during the lecture. It can solve the problem that leads to the dispersion of. At this time, it is possible to realistically display the appearance of the variously changed lecture site reflecting the current situation.

1 is a view showing the configuration of an interactive whiteboard system according to an embodiment of the present invention;
2 is a view showing the configuration of an interactive whiteboard according to an embodiment of the present invention;
3 is a view showing a detailed configuration of a mixer according to an embodiment of the present invention;
4 is a diagram illustrating a process of providing a multi-view screen of an interactive whiteboard according to one embodiment of the present invention;
5 is a diagram illustrating a process in which an interactive whiteboard determines a class progress mode according to an embodiment of the present invention;
6 is a diagram illustrating an example of a display screen and an internet broadcast screen according to an execution progress mode according to an embodiment of the present invention.

Advantages and features of the present invention, and methods for achieving them will be apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various forms, and only the embodiments of the present invention make the disclosure of the present invention complete and the general knowledge in the technical field to which the present invention belongs. It is provided to fully convey the scope of the invention to those skilled in the art, and the present invention is defined only by the scope of the claims. Like reference numerals refer to like elements throughout.

In describing the embodiments of the present disclosure, when it is determined that a detailed description of a known function or configuration may unnecessarily obscure the subject matter of the present disclosure, the detailed description thereof will be omitted, and the following terms are used in the embodiments of the present disclosure. Terms are defined in consideration of the function of the may vary depending on the user or operator's intention or custom. Therefore, the definition should be made based on the contents throughout the specification.

Combinations of each block of the block diagrams and respective steps of the flowcharts may be performed by computer program instructions (execution engines), which may be executed by a processor of a general purpose computer, special purpose computer or other programmable data processing apparatus. As such, instructions executed through a processor of a computer or other programmable data processing apparatus create means for performing the functions described in each block of the block diagram or in each step of the flowchart.

These computer program instructions may also be stored in a computer usable or computer readable memory that can be directed to a computer or other programmable data processing device to implement functionality in a particular manner, and thus the computer usable or computer readable memory. The instructions stored therein may also produce an article of manufacture containing instruction means for performing the functions described in each block of the block diagram or in each step of the flowchart.

In addition, computer program instructions may be mounted on a computer or other programmable data processing device, such that a series of operating steps may be performed on the computer or other programmable data processing device to create a computer-implemented process that may be executed by the computer or other programmable data. Instructions for performing the data processing apparatus may also provide steps for executing the functions described in each block of the block diagram and in each step of the flowchart.

In addition, each block or step may represent a portion of a module, segment or code that includes one or more executable instructions for executing specific logical functions, and in some alternative embodiments referred to in blocks or steps It should be noted that the functions may occur out of order. For example, the two blocks or steps shown in succession may, in fact, be performed substantially concurrently, or the blocks or steps may be performed in the reverse order of the corresponding function, as required.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, embodiments of the present invention illustrated in the following may be modified in many different forms, the scope of the present invention is not limited to the embodiments described in the following. Embodiments of the present invention are provided to more fully explain the present invention to those skilled in the art.

1 is a diagram illustrating a configuration of an interactive whiteboard system according to an embodiment of the present invention.

Referring to FIG. 1, an interactive whiteboard system includes an interactive whiteboard 1 and a peripheral device.

The interactive whiteboard 1 may be an electronic lecture board or an electronic blackboard. The electronic teaching desk has a difference in that the main controller is physically provided separately, and the electronic board is included in the driving device in the form of an internal board instead of the main controller. The e-drug may be in the form of an enclosure. Although FIG. 1 illustrates the form of an electronic blackboard, the form is not limited thereto. It is noted that the present invention can be applied jointly to both the electronic teaching board and the electronic blackboard.

The interactive whiteboard 1 controls input and output of various peripheral devices. The peripheral device is a device connected to the interactive whiteboard 1, and includes, for example, an instructor terminal 2, a student terminal 3, an instructor microphone 4, a student microphone 5, an instructor camera 6, and a student camera ( 7) and the like. The instructor terminal 2 may be a PC or a mobile terminal, and the student terminal 3 may be a mobile terminal. The instructor terminal 2 and the student terminal 3 may be located in a classroom or classroom, or may be located remotely through a network. By simply connecting the interactive whiteboard 1 to the PC via HDMI, the screen of the PC can be viewed as it is through the display of the interactive whiteboard 1. The writing content may be displayed on the display of the interactive whiteboard 1. In this case, writing can be intuitively performed on the display of the interactive whiteboard 1 where the screen of the PC is visible, and writing can be done remotely through the instructor terminal 2. You can share the contents through the network and conduct lectures. In this case, it may be connected to another interactive whiteboard and may be connected to a mobile terminal such as a PC, a tablet, or a smart device to share content.

In general system, if you want to do real-time internet broadcasting while giving lectures through electronic board or electronic table, you can use a separate internet transmission system and connect a number of video devices such as lecturer camera and student camera to the input unit, and then change the input mode from time to time. After broadcasting or recording, Internet broadcasting should be provided in the form of VOD. However, since the interactive whiteboard 1 according to an embodiment includes an internet broadcasting module including a mixer and a streaming module, a separate internet broadcasting screen is distinguished from the display screen of the interactive whiteboard 1 without a separate internet broadcasting system. It provides a multi-view function to send it to the Internet broadcast.

The present invention proposes an interactive whiteboard 1 that provides a multi-view screen according to a set lecture screen configuration scenario and enables internet broadcasting. For example, various multimedia inputs may be configured in a single view or a multi view using only the interactive whiteboard 1 without a separate external device and displayed on the interactive whiteboard 1. In addition, it is possible to store recorded files in the storage device inside the interactive whiteboard 1 or to transmit them through real-time Internet broadcasting through various platforms such as YouTube, UStream, and LiveStream. In this case, the Internet broadcast screen may be automatically configured and transmitted in real time according to the class progress mode without the instructor's separate control.

The interactive whiteboard 1 according to an embodiment provides a function of automatically configuring, displaying, and sharing a lecture screen having an optimal layout intended by an instructor whenever the class progress mode is changed. It can improve the learning efficiency by effectively displaying lecture materials and instructors and students on the screen, and sharing more realistic lecture videos to distant students in real time so that lecturers and students can concentrate more on lectures.

Hereinafter, a configuration of the interactive whiteboard 1 having the above-described features and a method of providing a multi-view screen using the interactive whiteboard 1 will be described in detail with reference to the drawings described below.

2 is a diagram illustrating a configuration of an interactive whiteboard according to an embodiment of the present invention.

Referring to FIG. 2, the interactive whiteboard 1 includes an internet broadcasting module including a mixer 106 and an encoding and streaming unit 112. Accordingly, the interactive whiteboard 1 alone may configure and switch the multi-view for various multimedia inputs without any additional device such as a switcher. In addition, by providing a display screen and real-time Internet broadcasting function, it is possible to reduce the cost required to provide an external device for this.

The interactive whiteboard 1 according to an embodiment provides a 'lecture screen configuration scenario' function that displays a screen in the most effective configuration reflecting the intention of the instructor according to the progress of the lecture. In addition, the configuration of the display screen and the Internet broadcast screen may be set differently. That is, the screen displayed on the display of the interactive whiteboard 1 and the Internet broadcast screen are different from each other. For example, information about the type, number, arrangement order, placement position, shape, size, shape, etc. of the images are different from each other. Accordingly, the lecture screen can be shared in real-time with students who meet the screen sharing environment more realistically. As a result, you can improve learning efficiency by creating an environment where instructors, students inside and far away from the classroom can focus more.

Hereinafter, each component is described in detail below.

The image input unit 100 receives an image and audio of an external video device through a high definition multimedia interface (HDMI) or the like and transmits the image and audio to the mixer unit 106. External video devices include PCs with written applications, instructor cameras, student cameras, DVDs, and physical imagers. In the case of a PC, it may be installed externally or may be included in the interactive whiteboard 1 in the form of an Open Pluggable Specification (OPS) PC. In FIG. 1, three HDMI inputs of the image input unit 100 are illustrated. However, this is only an exemplary embodiment for the understanding of the present disclosure, but is not limited thereto.

The audio input unit 102 receives audio from an external device such as an instructor and a student microphone, an audio out output of a PC or a mobile terminal, and delivers the audio to the mixer unit 106. The number of input audio of the audio input unit 102 may vary.

The communication unit 104 receives an image from an external device such as an instructor terminal and a student terminal through a wired or wireless network, decodes the image, and delivers the image to the mixer 106. In addition, it transmits and receives settings and status data, control messages and the like with the instructor terminal and the student terminal. For example, a presentation request message, a question request message, a presentation approval message, and a question approval message may be transmitted and received. The mixer 106 may receive an image from an external device through the communication unit 104 and synthesize the image together with the image input through the image input unit 100.

The interactive whiteboard 1 may share the screen of the mobile terminal with the interactive whiteboard 1 through the communication unit 104, or provide an interface for controlling the interactive whiteboard 1 using the mobile terminal. At this time, the communication signal processing unit 120 processes the image and audio received through the communication unit 104 and delivers it to the mixer 106. In addition, the communication signal processing unit 120 may transmit and receive setting and status data, control messages, and the like, and transmit the corresponding message to the mixer unit 106.

The mixer 106 may configure a multi-view screen by selectively switching and combining a plurality of input images. The synthesized image may be transmitted to the image processor 110 and the encoding and streaming unit 112. In addition, the mixer section 106 selectively synthesizes a plurality of input audios. The synthesized audio may be delivered to the audio processor 116 and the encoding and streaming unit 112. In this case, the number of input images and input audio to be synthesized may vary. The mixer 106 may individually set the video and the audio transmitted to each component.

Mixer 106 according to an embodiment of the 'lecture screen configuration scenario' function to transmit the lecture screen automatically configured in the optimal arrangement in consideration of the instructor's intention when changing the course progress mode, such as the class progress mode to the Internet broadcast To provide. The screen configuration scenario can be configured through the scenario control menu of the interactive whiteboard 1. Optionally, the instructor may be configured through the instructor terminal dedicated app when connecting to the interactive whiteboard (1) through the instructor terminal. The instructor may use the interactive whiteboard 1 or his terminal to stop or restart the scenario execution during the class, or may manually set the screen configuration by selecting among the screen configuration template settings during the scenario execution. In the manual setting, previously running scenarios are automatically stopped.

The class progress mode may include a writing mode, an instructor presentation mode, a student presentation mode, and a student query mode. The writing mode is a mode in which the instructor writes on the electronic board, and the instructor presentation mode is a mode in which the lecturer does not write but lectures to the audience. The student presentation mode is a mode in which a student or a group of students make a presentation, and the student query mode is a mode in which a student inquires a teacher. A detailed configuration of the mixer 106 will be described later with reference to FIG. 3.

The encoding and streaming unit 112 encodes the synthesized video and the synthesized audio received from the mixer 106 and transmits the synthesized video to the real-time Internet broadcast.

The image processor 110 processes the image received from the image input unit 100 or the synthesized image through the mixer 106 and outputs the image through the display 118. The audio processor 116 processes the audio synthesized through the audio or mixer 106 received from the audio input unit 102 and outputs the audio to the outside through the speaker 120.

The USB interface 122 may transmit data of the touch processor 114 through the USB terminal. The image display unit 112 outputs an image processed through the image processing unit 110 to the display 118, and the touch processing unit 114 detects and processes a touch of a screen output to the display 118. Display 118 may be a projector.

3 is a diagram illustrating a detailed configuration of the mixer of FIG. 2 according to an embodiment of the present invention.

2 and 3, the mixer 106 may include an event detector 1060, a mode determiner 1062, and a screen configuration unit 1064, and may further include a scenario setting unit 1066. have.

The event detector 1060 detects an event occurring during the lecture. Process of video analysis of instructor terminal and student terminal, detection of switch on or input of student microphone, detection of control signal of instructor terminal and student terminal, reception of sensing signal from sensor that detects facial expression and gesture of instructor May be additionally required.

The mode determiner 1062 determines the class progress mode according to the event detected by the event detector 1060. For example, the mode determination unit 1062 detects an event in which the interactive whiteboard 1 receives a presentation request message from the student terminal and transmits a message acknowledging it, or the interactive whiteboard 1 announces the student terminal. After transmitting the request message, if it detects an event for receiving a message accepting the message from the corresponding student terminal is determined to the student presentation mode. On the contrary, if an event of receiving a question request message from the student terminal and transmitting a message for approving the question is determined, it is determined as the student query mode. If it detects the writing of the electronic teaching board or the copyboard, it is determined as the writing mode. On the other hand, if it is not the student presentation mode, student query mode and writing mode, it is determined as the lecturer presentation mode. An example of this will be described later with reference to FIG. 5.

The screen configuration unit 1064 composes a lecture screen by synthesizing an image suitable for the class progress mode determined by the mode determination unit 1062. For example, the screen configuration unit 1064 displays the writing screen in the instructor presentation mode and writing mode, and the student presentation material screen in the student presentation mode, when the display screen of the electronic teacher or copyboard, Configure the display of the Electronic Teaching Board or the Copyboard to display the Student Questionnaire screen.

The screen configuration unit 1064 according to an embodiment divides a lecture screen into a display screen of an electronic teaching board or an electronic blackboard and an internet broadcasting screen, and configures the internet broadcasting screen differently from the display screen. For example, the screen configuration unit 1064 displays an instructor camera video screen in an instructor presentation mode, displays a writing screen in a writing mode, and displays a student presentation material screen and a student camera image in a student presentation mode. The multi-view screen is included. In the student query mode, the Internet broadcast screen may be configured to display a multi-view screen including a student question material screen, a student camera image, and an instructor camera image.

The screen configuration unit 1064 may vary the number of images to be synthesized and the screen configuration according to the number of input / output images. For example, the number of screens synthesized through the mixer 106 may be added or subtracted according to the number of HDMI inputs of the image input unit 100. In the student query mode, the maximum number of sub-screens is 3 screens, which may be added or subtracted according to the input / output configuration.

The class progress mode may include at least one of a writing mode, an instructor presentation mode, a student presentation mode, a student query mode, a real imager mode, a DVD viewing mode, and a remote connection mode. The type and number of the class progress mode may be added or subtracted, and the screen configuration of the class progress mode may also be changed. Various screen configuration examples of the screen configuration unit 1064 will be described later with reference to FIG. 6.

The scenario setting unit 1066 presets the lecture screen configuration scenario including the screen configuration template according to the class progress mode. At the time of setting, it is possible to set the multi view screen configuration information composed of multiple inputs or to set the single view screen configuration information composed of only one input. The multi-view screen configuration information includes information on the type, number, arrangement order, arrangement position, shape, size, shape, etc. of images constituting the screen for each class progress mode. In addition, the template of the display screen and the Internet broadcast screen may be separately set. In this case, the lecture screen configuration scenario may be performed through the lecture screen configuration scenario setting menu of the interactive whiteboard.

4 is a diagram illustrating a process of providing a multi-view screen of an interactive whiteboard according to an embodiment of the present invention.

Hereinafter, referring to FIG. 4, the interactive whiteboard detects an event during a lecture (310). Subsequently, the class progress mode is determined 320 according to the detected event, and a lecture screen suitable for the determined class progress mode is configured and provided (330). The class progress mode determination process 320 will be described later with reference to FIG. 5, and the lecture screen configuration and provision process 330 suitable for the class progress mode will be described below with reference to FIG. 6.

5 is a diagram illustrating a process in which an interactive whiteboard determines a class progress mode according to an embodiment of the present invention.

Referring to FIG. 5, the writing mode is a mode in which an instructor writes on an interactive whiteboard or an instructor terminal whose screen is shared on the interactive whiteboard, that is, a mode in which the instructor concentrates on the blackboard. When the interactive whiteboard is not in the presentation and query mode, when the interactive whiteboard detects the writing (470), the interactive whiteboard determines that the current mode is the writing mode and enters (480).

Instructor presentation mode is a mode where a lecturer looks at an audience. If the interactive whiteboard is not in the presentation and inquiry or writing mode, the interactive whiteboard determines to enter the instructor presentation mode (490).

The student presentation mode is a mode in which a student or a group of students present a specific topic, such as assignment presentation. Relevant materials displayed on student terminals during presentations and data written by students on their student terminals can be shared through interactive whiteboards. The interactive whiteboard detects an event in which the student sends a presentation request message to the interactive whiteboard through his terminal (430) and requests an announcement, and then sends an acknowledgment message by the interactive whiteboard, or through the interactive whiteboard. After setting the presentation student by transmitting a presentation request message to the student terminal (400), when the student detects an event for receiving a message to accept the determination, the current mode is determined as the student presentation mode and then entered (410). When the presentation ends and the end presentation button is clicked on the student terminal or the interactive whiteboard, it may be determined that the student presentation mode has ended.

The student query mode is a mode in which a student can ask an instructor and get an answer. Related data displayed on the student terminal during the query and data written by the student on his or her student terminal can be shared through the interactive whiteboard, and data written on the interactive whiteboard during the instructor's response can also be displayed on the student terminal screen. Can be shared. The interactive whiteboard requests a question by sending a question request message to the interactive whiteboard through its terminal (440), and when the instructor detects an event that sends a message acknowledging it through the interactive whiteboard, the student selects the current mode. In operation 450, the query mode is entered. When the query is terminated and the query termination button is clicked on the student terminal or the interactive whiteboard, it may be determined that the student query mode is terminated (460).

In the present invention, the teaching progress mode is defined and described as the four modes described above, but other modes such as a real picture mode, a DVD viewing mode, a remote connection mode, and the like may be added as necessary.

6 is a diagram illustrating an example of a display screen and an internet broadcast screen of an interactive whiteboard according to an execution progress mode according to an embodiment of the present invention.

Referring to FIG. 6, the instructor may set a screen configuration template according to the class progress mode in the lecture screen configuration scenario setting menu of the interactive whiteboard. When setting the template, the multi-view screen configuration information composed of a plurality of inputs may be set, or only one video and audio input may be set. Further, templates of the display screen and the Internet broadcast screen may be separately set. For example, only the writing screen of a PC may be displayed on the electronic blackboard, and the Internet broadcasting screen may be configured to arrange the instructor camera image as a sub screen (PIP) on the writing screen. You can also provide multiple screen configuration template settings and scenario template settings by default, or provide an interface to add instructor settings.

In the lecturer presentation mode, the lecturer's camera may be intensively displayed in order to focus on the facial expressions and gestures of the lecturer. When the lecturer is presenting in front of the interactive whiteboard, the camera image cannot be displayed on the interactive whiteboard. Therefore, the instructor camera image can be broadcasted on the Internet, and only the writing image can be displayed on the display screen.

In the writing mode, only the writing screen can be displayed so that the contents of the writing can be concentrated.

In the student presentation mode, the student camera image can be placed on the student presentation screen as a PIP to focus on the presentation materials and the presenters, and the student can also share the written information on the presentation materials through his terminal.

In Student Query mode, you can place student and instructor videos as PIPs on the Student Questionnaire screen to focus on question material and the instructor's interactions with the questioner and answer, and share what you write on the student terminal and the interactive whiteboard. have.

In the student query mode of FIG. 6, the maximum number of sub-screens is 3 screens, which may be added or subtracted according to the H / W input / output configuration. For example, the image input unit may be added or subtracted according to the number of HDMI input images.

6 illustrates four class progress modes, the type and number of class progress modes may be added or subtracted, and the screen configuration of the class progress mode may be changed. Depending on the number of input / output of H / W, the number of branches of class progress mode may be added or subtracted, which is related to the material cost.

So far, the present invention has been described with reference to the embodiments. Those skilled in the art will appreciate that the present invention can be implemented in a modified form without departing from the essential features of the present invention. Therefore, the disclosed embodiments should be considered in descriptive sense only and not for purposes of limitation. The scope of the present invention is shown in the claims rather than the foregoing description, and all differences within the scope will be construed as being included in the present invention.

Claims (10)

An image input unit receiving an image signal;
An audio input unit configured to receive an audio signal;
By selectively switching and synthesizing a plurality of input videos and input audios, a lecture screen that supports a multi-view screen for a plurality of input images is configured, and when a lecture screen is configured, a display screen and an internet broadcast screen are differently configured. Determine the class progress mode including the student presentation mode, student query mode, writing mode, and lecturer presentation mode when constructing the broadcast screen. And a mixer configured to configure an internet broadcast screen by selecting from a writing screen.
An image processor which processes the image received from the image input unit or the synthesized image through the mixer unit and outputs the synthesized image through a display;
An audio processor configured to process audio synthesized through the audio or mixer received from the audio input unit and output the synthesized audio through a speaker; And
An encoding and streaming unit for encoding and synthesizing the synthesized video and audio through a mixer to transmit an internet broadcast screen in real time;
Interactive whiteboard comprising a. The method of claim 1, wherein the mixer portion
An event detector detecting an event occurring during a lecture;
A mode determination unit to determine a class progress mode according to the detected event; And
A screen configuration unit configured to compose a lecture screen by synthesizing images according to the determined class progress mode;
Interactive whiteboard comprising a. The method of claim 2, wherein the event detection unit
After receiving an announcement request message from the student terminal detects an event that transmits a message to approve it or transmits an announcement request message to the student terminal and detects an event that receives a message to accept it from the student terminal is determined to the student presentation mode and,
Receiving a question request message from the student terminal and detects the event to transmit a message to approve it, it is determined to the student query mode,
If it detects the writing, it is judged in writing mode.
An interactive whiteboard characterized in that it is judged by the instructor presentation mode unless the student presentation mode, student query mode, or writing mode. The apparatus of claim 2, wherein the screen configuration unit
When configuring the display screen of the electronic teaching board or the copyboard, configure the display screen to display the writing screen in the instructor presentation mode and the writing mode, the student presentation screen in the student presentation mode, and the student question material screen in the student inquiry mode. Featured interactive whiteboards. The apparatus of claim 2, wherein the screen configuration unit
The interactive whiteboard, which divides the lecture screen into a display screen and an internet broadcast screen, and configures the internet broadcast screen separately from the display screen. The apparatus of claim 2, wherein the screen configuration unit
In the lecture presentation mode, the lecturer camera video screen is displayed in the lecture presentation mode, the writing screen is displayed in the writing mode, the student presentation material screen and the multi-view screen including the student camera image are displayed in the student presentation mode. An interactive whiteboard, wherein the Internet broadcast screen is configured to display a multi-view screen including a questionnaire screen and a student camera image and an instructor camera image. The apparatus of claim 2, wherein the screen configuration unit
The interactive whiteboard, characterized in that the number of images to be synthesized and the screen configuration is different according to the number of input and output images. The apparatus of claim 2, wherein the screen configuration unit
The lecture screen is configured according to the class progress mode including at least one of the writing mode, the lecturer presentation mode, the student presentation mode, the student query mode, the real presenter mode, the DVD viewing mode, and the remote connection mode. Interactive whiteboards that are configured differently. The method of claim 1, wherein the mixer portion
Preset the lecture screen composition scenario including the screen composition template according to the class progress mode, set the multi-view screen composition information composed of multiple inputs at the time of setting, or set the single view screen composition information composed of only one input. A scenario setting unit for separately setting a template of an internet broadcast screen;
Interactive whiteboard comprising a. The method of claim 1, wherein the interactive whiteboard
A communication unit which receives an image from an external device through a network and transmits and receives a control signal; More,
The mixer unit receives an image from an external device through a communication unit and synthesizes the image together with the image input through the image input unit.