JPH11338339A - Remote lecture system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a remote lecture system for supporting a lecturer's instruction method as a method of activating communication between a lecturer and a student and between the students. SOLUTION: Not only data 24 on a lecture material 24, a moving picture data 22 of a lecturer, a moving picture data 23 on a student, but also picture data 25 for control (a group of control buttons) which show a list of various executable controls are displayed on a display screen. The lecturer can easily execute various controls (switching of camera and lecture materials, message transmission, etc.), only by selecting control buttons among the picture data 25 for control (click) by using a pointing device.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a remote lecture system for giving a lecture using a communication line.

[0002]

2. Description of the Related Art Satellite communication and ISDN (Integrated Serv
ices Digital Network) and distance education using high-speed digital dedicated lines are actively conducted in Japan and overseas. Recently, the Ministry of Education has decided to allow credits to be earned through distance lectures. Until now, credit recognition has been granted only for face-to-face classes in classrooms, but it has also been granted for remote lectures using networks. As a result, education will not only be face-to-face classes in the classroom, but will also be more globally spread using networks. It is no longer an essential matter to be in a remote area, and anyone with equal motivation can have equal access to education.

[0003]

However, in the current distance learning system, an effort is mainly made to send a video, a still image, and a voice of an instructor to a multi-ground by a video transmission device. It is certainly efficient in sending uniform learning information to multiple destinations at the same time, but as a result, education that does not always satisfy the trainees is provided.

[0004] In education, "communication between the instructor and the students and between the students" is the most important. In the case of a distance lecture, a sense of alienation in the distance is inevitable. Therefore, it is important not to give students a sense of alienation in the distance, and for that purpose, mutual communication is particularly important. In a distance lecture, it is impossible to exceed the physical distance, but it is possible to overcome the "psychological distance" by devising the system and teaching methods.

The present invention has been made in view of such circumstances, and provides a remote lecture system that supports a teaching method of a lecturer as a method of activating communication between the lecturer and the students and between the students. It is intended to be.

[0006]

According to the present invention, there is provided a remote lecture system for exchanging lecture material data, moving image data, voice data and control data between a lecturer and a student through a communication line. Communication means for transmitting and receiving lecture material data, moving image data, audio data and control data to and from a communication line;
Information storage means for storing lecture material data created in advance or received from the communication line, lecture material data received from the information storage means, moving image data of the other party input from the camera and sent through the communication line, Create a display screen by performing image processing on control image data for displaying a list of your own moving image data and various executable controls input from the camera and selecting the control to be executed using a pointing device Image processing means for transmitting to the image display device, voice information received from the microphone to the communication means, voice processing means for transmitting the voice information of the other party received from the communication means to the speaker, and keyboard input Receives control signals from the device and the pointing device, and Means, information storage means, encourage the image processing unit and an audio processing unit, and an operation control means for performing control corresponding to the control signal.

In one embodiment of the present invention, the control image data includes at least a button for switching a screen configuration of a display screen, a button for operating a posture and a magnification of a camera, and a button for displaying lecture materials. A button for starting the program, a button for sending a message to the other party connected via the communication line, a button for linking the display screen of the instructor with the display screen of the student, and selecting and communicating with the other party A line connection button for connecting a line is provided.

[0008]

According to the present invention, control image data (control button group) displaying a list of various controls that can be executed together with lecture material data, instructor moving image data, and student moving image data is displayed on the display screen. Will be displayed. The instructor can easily execute various controls (switching of cameras and lecture materials, message transmission, etc.) only by selecting (clicking) using a pointing device from the control image data. The burden is reduced, and it is possible to concentrate on the lecture.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a remote lecture system according to the present invention will be described.
This will be described in detail with reference to the drawings.

(1) System Configuration FIG. 1 is a block diagram showing the overall configuration of a remote lecture system.

The remote lecture system includes one instructor system 1 and one or a plurality of student systems 2.

The instructor system 2 includes devices such as a personal computer 3, an image display device 4, an external storage device 5, a keyboard input device 6, a pointing device 7, an electronic board input device 8, a video camera 9, a speaker 10, and a microphone 11. It is configured.

The student system 2 has substantially the same configuration as the instructor system 1, and the instructor system 1 and the external communication line 12
Connected through. The instructor system 1 and the student system 2 may be connected by a multipoint (multipoint control device) using an MCU. The following description focuses on the instructor-side system 1.

The personal computer 3 is a central processing unit (CPU) for executing processing according to a program.
And a memory (both not shown) used by the processing device in executing the program.

The image display device (CRT display device, liquid crystal display, etc.) 4 is used for displaying moving image information and still image information exchanged in the remote lecture system.

The external storage device (hard disk, flexible disk, magneto-optical disk, etc.) 5 includes lecture materials prepared in advance, programs required for the remote lecture system, telephone numbers required for connecting the external communication line 12, and the like. Is used to store the information of

The keyboard input device 6 is used for operating a remote lecture system and inputting information such as a telephone number. The pointing device (mouse, pen plotter, trackball, etc.) 7 is used to efficiently operate the remote lecture system.

Electronic board input device (soft board) 8
Is for reading static image information such as characters and figures handwritten on an electronic board and outputting it as digital data. Only the instructor-side system 1 is provided. The electronic board input device 8 generally includes a housing such as a white board,
It comprises a screen for the user to write directly with a pen, a winding mechanism for winding the screen in a certain direction, and a scanner for reading characters, figures, etc. drawn on the wound screen. ing. When the screen is wound in one direction, characters and figures handwritten by the user on the screen are sequentially read by the scanner line by line and output as digital data.

The video camera 9 is for capturing the state of the room, the expression of the instructor or the student, and outputting it as a moving image signal. The video camera 9 can be remotely controlled by a camera switching window 48, which will be described later, and can rotate up, down, left, and right, and can zoom in and out. In addition to imaging the expression of the instructor or the student, by turning the video camera 9 downward, it is possible to display paper-based information on a desk as a document camera.

The loudspeaker 10 is a voice processing means 1 to be described later.
The sound is output based on the sound signal input from the input unit 6.
The microphone 11 listens to audio information in a room, converts the information into an electric signal, and outputs the electric signal to the audio processing unit 16. Instead of the speaker 10 and the microphone 11, an audio input / output device such as a headphone with a microphone may be used.

The external communication line 12 is a line for transmitting and receiving between the lecturer and the student, that is, between the lecturer system 1 and the student system 2. As the external communication line 12, a highly reliable LAN (Local Area Net
work), an ISDN line (integrated digital communication network), a dedicated line, and the like.

The personal computer 3 also includes a communication unit 13, an information storage unit 14, an image processing unit 15, an audio processing unit 16, and an operation control unit 17.

The communication means 13 encodes various types of information such as moving image information, still image information such as lecture materials, audio information, control information, and the like, compresses the information, and transmits it to the external communication line 12. Also,
The coded and compressed information is received, decompressed, and decoded.

The information storage means 14 receives and stores various kinds of information from the external storage device 5 and the communication means 13 and image processing means 15 and sound processing means described later. Also, the stored various information is sent to the external storage device 5, the communication unit 13, the image processing unit 15, and the audio processing unit.

The image processing means 15 comprises: static image information such as lecture materials received from the information storage means 14;
2, moving image information of the user (instructor) to be transmitted to the student input from the video camera 9, characters handwritten by the instructor input from the electronic board input device 8 The graphic information and the control image information are subjected to various image processing such as enlargement / reduction, assignment of display positions, synthesis, etc., to generate a display screen, and send it to the image display device 4. Also, the moving image information received from the video camera 9 and transmitted to the student is encoded and compressed, and transmitted by the communication unit 13.

The sound processing means 16 includes the microphone 11
The voice information received through the communication means 13 and the information storage means 14 are transmitted to the communication means 13 and the information storage means 14, and the voice information of each student received from the communication means 13 and the information storage means 14 is synthesized to generate synthesized voice information. Send to 10.

The operation control means 17 receives control signals from the keyboard input device 6 and the pointing device 7 and acts on the communication means 13, the information storage means 14, the image processing means 15 and the sound processing means 16, and responds to the control signals. Execute control.

(2) Display Screen of Remote Lecture System FIG. 2 shows a main screen 2 of the instructor-side system 1 displayed on the image display device 4 when the remote lecture system is activated.
0.

Main screen 20 in the instructor-side system 1
Is a main window 21 for displaying lecture materials created by the instructor, a remote window 22 for displaying a moving image sent from the student via the external communication line 12, and a self (instructor). And a local window 23 for displaying a moving image transmitted through the external communication line 12.

The main window 21 includes an area 24 for displaying lecture materials and the like, and a menu button 25 for selecting an application program. Lecture materials displayed in the display area 24 can be viewed by all persons participating in the lecture, and correspond to a slide projector, an OHP (Over Head Projector) screen, a blackboard, and a video monitor in a normal lecture. The menu button 25 is used to select lecture materials to be displayed in the display area 24, switch the camera 9, and connect a line. In general, the more an effective lecture is given, the more the operation scenes of the device become, and this burdens the lecturer and affects the lecture content. By using the menu button 25, the lecturer can switch the lecture material and the camera 9 in a unified and simple manner, so that the lecture can smoothly proceed without obstructing the flow of the lecture.

FIG. 3 shows the remote window 22. The remote window 22 includes an area 26 for displaying a moving image of the student transmitted through the external communication line 12 (in the student system 2, a moving image of the instructor transmitted through the external communication line 12). Button 27 for disconnecting the image, a pull-down menu 28 for selecting the size of the window 22, a button 29 for selecting ON / OFF of the microphone 11, and a button for selecting whether or not to display a moving image. 30 and a slide button 31 for adjusting the volume. In the remote window 22, from among the moving images of the students,
The instructor can arbitrarily select and display the students. In the student system 2, a moving image of the instructor is always displayed on the remote window 22.

FIG. 4 shows the local window 23. The local window 23 has an area 32 for displaying the own moving image (moving image sent to the other party through the external communication line 12) input from the video camera 9, and a pull-down menu for selecting the size of the window 23. 33, a button 34 for increasing luminance, a button 35 for decreasing luminance, and a button 36 for selecting image input. The image input selection button 36
When two video cameras 9 are used (for example, a main camera for displaying the lecturer's face and a sub-camera for displaying paper-based information on a desk are selectively used), a moving image is displayed in the window 23 while switching the video cameras 9. It is to make it.

As described above, the lecture proceeds while the expressions of the student and the lecturer are displayed on the remote window 22 and the local window 23, so that the effect of the lecture is not lost.

FIG. 5 shows the menu button 25.
The menu button 25 includes a display switching button 37, a camera operation button 38, a presentation program activation button 39, an electronic board activation button 40, a whiteboard activation button 41, a data capture activation button 42, a video display button 43, a message transmission button 44, and an application. It comprises a share button 45, a line connection button 46, and an end button 47.

(2-1) Display switching button FIG. 6 shows the main screen 2 when the display switching button 37 is pressed.
0 indicates a change. When the display switching button 37 is clicked, the main window 21 is enlarged and displayed on the entire screen of the image display device 4. When the display switching button 37 is clicked again, the display returns to the original state, and the main window 21, the remote window 22, and the local window 23 are divided and displayed.

(2-2) Camera Operation Button FIG. 7 shows a camera switching window 48 displayed on the screen when the camera operation button 38 is clicked. The camera switching window 48 includes buttons 49 for causing the video camera 9 to zoom in and zoom out, an upper button 50, a lower button 51, a left button 52, and a right button 5 for controlling the attitude of the video camera 9.
3. Local camera switching button 54 for switching video camera 9, remote camera switching button 55, main camera switching button 56, and sub camera switching button 5
7 is comprised.

When the local camera switch button 54 is pressed, the user can operate his / her own video camera 9. When the remote camera switch button 55 is pressed, a control signal is transmitted to the student system 2 through the external communication line 12, and the student's video is The camera 9 can be operated. The main camera switching button 56 and the sub camera switching button 57 are used when two or more video cameras 9 are used. For example, it is used when a lecture is given by capturing one's facial expression with one video camera 9 and paper-based materials on a desk with another video camera (document camera) 9.

(2-3) Presentation program start button When the presentation program start button 39 is clicked, a preset presentation program provided by each software manufacturer is started, and lecture materials are displayed in the display area 24 as shown in FIG. Is displayed. Lecture materials are created in advance using the presentation program. As a slide-type presentation program, for example, PowerP
oint (Microsoft).

Instead of a presentation program,
Lecture materials in HTML (Hyper TextMarkup Language)
And SGML (Standard Generalized Markup Languag
e), it may be described in XML (eXtensibe Markup Language). Lecture materials described in HTML can be displayed on a Web browser such as Netscape Communicator (Netscape Communications) or Internet Explorer (Microsoft).

(2-4) Electronic Board Activation Button FIG. 8 shows a state in which character / graphic information handwritten on the electronic board input device 8 is displayed on the display area 24 of the main screen 20.

The character / graphic information handwritten on the electronic board input device 8 is sequentially read by a scanner line by line and output as digital data. When the electronic board activation button 40 is clicked, the electronic board input device 8 is activated.
Is input, and the read character / graphic information is displayed on the display area 24.

(2-5) Whiteboard Activation Button When the whiteboard activation button 41 is clicked, the lecture material display area 24 is cleared to become a whiteboard, and the input device waits for the pointing device 7. As shown in FIG. 9, by moving the cursor of the pointing device 7 such as a mouse, characters and graphics can be directly written in the display area 24.

(2-6) Data capture start button When the data capture start button 42 is clicked,
The electronic file of the lecture material created by the presentation program is converted into an electronic file that can be displayed on the whiteboard.

(2-7) Video display button When the video display button 43 is clicked, a video image recorded or created in advance is displayed in the lecture material display area 2.
4 is displayed. MPEG (Movi)
A moving image or the like compressed by an ng Picture coding Experts Group) coding method is used.

(2-8) Message transmission button When the message transmission button 44 is clicked, a message transmission window 58 shown in FIG. 10 is opened. The message transmission window 58 has a message creation button 5
9, a message creation area 60, a button 61 for closing the message transmission window 58 and returning to the previous screen, a button 62 for registering / changing a destination to which the message is transmitted, and a button 63 for transmitting the message. You.

When the message creation button 59 is clicked, the message creation area 60 is cleared, and the operation shifts to a state of waiting for input from the keyboard input device 6. When a transmission message is created in the message creation area 60 and the button 63 is clicked, the message is sent to a destination registered in advance via the external communication line 12.

(2-8) Application Sharing Button When the application sharing button 45 is clicked, an image displayed in the lecture material display area 24 (a lecture material created by a presentation program, or written on an electronic board device or a whiteboard) is displayed. Characters, figures, etc.)
Can be shared between the instructor and all the students.

(2-9) Line Connection Button When the line connection button 46 is clicked, a connection destination list window 64 shown in FIG. 11 is opened. A plurality of connection destination buttons 65 are displayed on the connection destination list window 64, and "O"
The name of the connection destination such as “× University” is displayed on the button 65 for which the connection destination has not been registered yet, such as “connection destination.04”.

When an arbitrary connection destination button 65 is clicked, a line connection window 66 is opened. The line connection window 66 includes a telephone number input area 67, a button 68 for closing the line connection window 66 and returning to the connection destination list window 64, a button 69 for registering and changing a telephone number, and a button for connecting a line. It comprises a button 70. When the telephone number displayed in the area 67 is confirmed and the connection button 70 is clicked, the instructor system 1 and the student system 2 are connected via the external communication line 12.

(3) Operation of the Remote Lecture System The operation of the remote lecture system configured as described above will be described.

The operation of this system is roughly divided into two modes, a "lecture preparation mode" and a "lecture execution mode".

(3-1) Lecture Preparation Mode FIG. 12 is a flowchart showing the flow of the operation of the remote lecture system in the lecture preparation mode.

The instructor first turns on the personal computer 3 and various devices connected thereto to activate the remote lecture system (step 100). On the screen of the image display device 4, a main screen 20 as shown in FIG. 2 is displayed.

Before the lecture, the instructor needs to
Lecture materials and M using a presentation program and a moving image creation program such as nt (Microsoft)
PEG data is created and stored in the external storage device 5 (step 101). Lecture materials stored in the external storage device 5 used in the lecture before may be used. Alternatively, a video capture device may be connected to the personal computer 3 to convert an analog video signal transmitted from the video deck into a digital video signal and use it as a lecture material.

In order to start a lecture, the instructor system 1 and each student system 2 must be connected via the external communication line 12. The instructor instructs the student system to be turned on by notifying the lecture time in advance or contacting the student who needs to attend the lecture (step 102).

Next, the instructor gave the personal computer 3
A line connection operation with the student system 2 is performed using the keyboard input device 6 or the pointing device 7 connected to the system. Click on the line connection button 46 of the menu button 25 to open the connection destination list window 64
Is displayed, and the button 65 of the partner to be connected is clicked (step 103). By clicking the connection button 70 of the line connection window 66 displayed on the screen, the instructor system 1 and the student system 2 are connected via the external communication line 12 (step 10).
4).

The lecturer transmits the lecture material to each student before the lecture starts so that the lecture material can be displayed at a high speed during the lecture (step 105). As a method of transmitting lecture materials, a method of directly transmitting an electronic file created by the presentation program and a method of converting the image data to image data which can be displayed on a whiteboard which is opened when the whiteboard start button 41 is clicked and transmitting the same. is there. The former method is based on the premise that the presentation program is installed in the student's personal computer 3, and the latter method can display lecture materials even when the presentation program is not installed. .

The instructor first clicks a presentation program start button 39 to start a preset presentation program. The lecture material prepared in advance is opened from the presentation program, and the lecture material is displayed in the display area 24. Next, the user clicks the data capture start button 42 to convert the lecture material into an electronic file that can be displayed on the whiteboard, and stores it in the information storage unit 14. Finally, the converted lecture material is delivered to the student system 2 connected via the external communication line 12. Each student system 2 stores the delivered lecture materials in the information storage unit 14 until the lecture ends (step 106).

The lecture materials distributed to each student system 2 are stored in the information storage means 14 independently of the instructor system 1 and other student systems 2. Therefore, when the application sharing button 45 is released, an instruction is given by using the keyboard input device 6 or the pointing device 7 to select a display page at any time during the lecture or to change the size of the display screen. (If the application sharing button 45 is pressed, the lecture materials displayed on the main window 21 of the instructor system 1 are displayed on the main window 21 of each student system 2. Is done). In this way, after the lecture material is distributed to the user's own system 2, the student can view and consider the lecture material while selecting a necessary part during the lecture.

When the lecture material is normally stored in the information storage means 14 of the student system 2, a message to that effect may be transmitted to the lecturer system 1.

(3-2) Lecture execution mode FIG. 13 is a flowchart showing a flow until the main screen 20 is displayed on the image display device 4 of the instructor system 1.

The lecture material data created in advance is
After being read from the external storage device 5 to the information storage means 14 (step 107) and subjected to image processing (step 1)
12), displayed on the main window 21 (step 113).

When the lecture starts, the lecturer is imaged by the video camera 9 (step 108). Video camera 9
Is subjected to image processing by the image processing means 15 (step 112), and is displayed on the local window 23 of the image display device 4 (step 1).
13). The moving image of the lecturer is compressed by the communication means 13,
It is distributed to each student system 2 via the external communication line 12 (step 109). The delivered moving image of the instructor is subjected to decompression processing in the communication means 13 of the student system 2 and displayed on the remote window 22 of the student.

Similarly, the moving image of the student captured by the video camera 9 (step 110) is displayed on the local window 23 of the student system 2 and distributed to the instructor system 1 via the external communication line 12. (Step 111), and after image processing is performed (Step 11).
2) It is displayed on the remote window 22 of the instructor system 1 (step 113). This allows the lecturer to proceed with the lecture while watching the response of the student.

Preferably, at the beginning of the lecture, the moving image of the lecturer is displayed on the image display device 4 on the student's side so as to fill the entire screen, and orientation is performed. Set to display.

FIG. 14 is a flowchart showing the flow of the operation of the remote lecture system in the lecture execution mode.

At the start of the lecture, the application sharing flag is set to "1" (step 114). The application sharing flag indicates whether or not the lecture material displayed in the lecture material display area 24 of the instructor system 1 is linked to the lecture material displayed in the lecture material display area 24 of each student system 2. With a flag pointing to
"1" means linked and "0" means independent. Therefore, the lecture materials displayed in the lecture material display area 24 of the instructor system 1 are displayed by default in the lecture material display area 24 of each student system 2 (when the application sharing button 45 is pressed). State). When the instructor changes the size of the page or screen of the lecture material, the image data of the newly displayed page is distributed to each student system 2 via the external communication line 12, so that the lecture material of the student The display page is also changed in conjunction with this.

The teacher switches the display switching button 37, the camera operation button 38, the presentation program start button 3
9. When any one of the electronic board start button 40, the whiteboard start button 41, and the video display button 43 is clicked (step 115), processing corresponding to these buttons is performed, and the display content of the main screen 20 is changed. (Step 116).

When the display switching button 37 is clicked (step 115), the main window 21 is enlarged and displayed on the entire screen of the image display device 4. Display switching button 3 again
Click 7 to return to the main window 21,
Remote window 22 and local window 23
Is divided and displayed.

When the camera operation button 38 is clicked (step 115), a camera switching window 48 shown in FIG. 7 is displayed. When the local camera switching button 54 is clicked, the user can operate his / her own video camera 9. When the remote camera switching button 55 is clicked, a control signal is transmitted to the student through the external communication line 12 so that the video camera 9 on the student can be operated. By clicking the main camera switching button 56 and the sub camera switching button 57, the video camera 9 can be switched and displayed.

When the presentation program start button 39 is clicked (step 115), a preset presentation program provided by each software manufacturer is started, and lecture materials are displayed in the display area 24 as shown in FIG.

When the electronic board start button 40 is clicked (step 115), the input of digital data output from the electronic board input device 8 is accepted, and the read character / graphic information is displayed on the display area 24.

When the whiteboard activation button 41 is clicked (step 115), the lecture material display area 24 is cleared to become a whiteboard, and writing can be directly performed using the cursor of the pointing device 7.

When the video display button 43 is clicked (step 115), a video image recorded or created in advance is displayed in the display area 24.

The image signals input from these devices connected to the personal computer 3
5, various image processing such as enlargement / reduction, allocation of display positions, and synthesis are performed. The image signal generated by the image processing means 15 is sent to the image display device 4 and displayed on the display screen of the instructor-side system 1 (step 116).

Next, the value of the application sharing flag is determined (step 117). When the application sharing flag is “1”, the generated image signal is subjected to compression processing by the communication unit 13 and transmitted to the student system 2 via the external communication line 12. The transmitted image signal is subjected to decompression processing by the communication means 13 and displayed on the image display device 4 by the image processing means 15 (step 118).

When the message transmission button 44 is clicked (step 119), a transmission window 58 is opened.
Creation and transmission of messages are accepted. The created message is transmitted to the student through the external communication line 12 (step 120).

When the application sharing button 45 is clicked, that is, when the sharing of the application is canceled (step 121), “0” is substituted for the application sharing flag (step 122), and the main screen 20 of each student is displayed on the instructor's side. Independent from the main screen 20. In the lecture material display area 24 of each student, lecture materials stored in advance in the information storage means 14 of the student system 2 are displayed.
It is possible to display an arbitrary page or change the size of the screen by giving an instruction by using the pointing device 7 or the pointing device 7.

When the end button 47 is clicked (step 123), the remote lecture system ends.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating an entire configuration of a remote lecture system.

FIG. 2 is a main screen 20 of the instructor-side system 1 displayed when the remote lecture system is activated.

FIG. 3 shows a remote window 22.

FIG. 4 shows a local window 23.

FIG. 5 shows a menu button 25;

FIG. 6 shows how the main screen 20 changes when the display switching button 37 is pressed.

FIG. 7 shows a camera switching window 48 displayed on the screen when the camera operation button 38 is clicked.

FIG. 8 shows characters handwritten on the electronic board input device 8;
This shows a state in which graphic information is displayed on the display area 24 of the main screen 20.

FIG. 9 shows a state in which characters are directly written on the whiteboard with the cursor of the pointing device 7;

FIG. 10 shows a message transmission window 58;

FIG. 11 shows a connection destination list window 64 and a line connection window 66 that are opened when the line connection button 46 is clicked.

FIG. 12 is a flowchart showing a flow of operation of the remote lecture system in the lecture preparation mode.

FIG. 13 is a flowchart showing a flow until the main screen 20 is displayed on the image display device 4 of the instructor-side system 1.

FIG. 14 is a flowchart showing a flow of operation of the remote lecture system in the lecture execution mode.

[Explanation of symbols]

 Reference Signs List 1 Instructor system 2 Student system 3 Personal computer 4 Image display device 5 External storage device 6 Keyboard input device 7 Pointing device 8 Electronic board input device 9 Camera 10 Speaker 11 Microphone 12 External communication line 13 Communication means 14 Information storage means 15 Image processing means 16 Audio processing means 17 Operation control means 20 Main screen 21 Lecture material display window 22 Remote window 23 Local window 24 Lecture material display area 25 Menu button 37 Display switching button 38 Camera operation button 39 Presentation program start button 40 Electronic board start Button 41 Whiteboard start button 42 Data capture start button 43 Video display button 44 Message send button 45 Application Deployment share button 46-line connection button 47 Exit button

Claims (2)

[Claims] [Claim 1] Lecture material data between an instructor and a student,
In a remote lecture system for exchanging moving image data, audio data and control data through a communication line, a communication means for transmitting and receiving the lecture material data, moving image data, audio data and control data to and from the communication line, Or information storage means for storing lecture material data received from the communication line, lecture material data received from the information storage means, moving image data of the other party input from the camera and transmitted through the communication line, input from the camera A display screen is created by performing image processing on control image data for displaying a list of the user's own moving image data and various executable controls and selecting a control to be executed using a pointing device. Image processing means to send to display device, received from microphone Voice processing means for transmitting voice information to the communication means and transmitting voice information of the other party received from the communication means to a speaker, and receiving control signals from a keyboard input device and a pointing device; Means, image processing means and sound processing means,
An operation control means for executing control according to the control signal. 2. The control image data includes a button for switching at least a screen configuration of a display screen, a button for operating a posture and a magnification of a camera, a button for starting a program for displaying lecture materials, A button for sending a message to the other party connected via the communication line, a button for linking the instructor's display screen with the student's display screen, and a button for selecting the other party and connecting the communication line 2. The remote lecture system according to claim 1, further comprising a line connection button.