JPH0290190A - Tv learning system - Google Patents

Abstract

PURPOSE:To make questions and answers between plural students and one teacher in a state where contents of questions and answers between one student and the teacher can be monitored by the other students by providing a personal computer function for handling teaching materials and TV phone system. CONSTITUTION:Pictures inputted from cameras 13 and 17 are converted into code data by means of CODECs 3 and 5 and sent to a receiving-side CODEC through a inlet 4, by which the code data are converted into image data and outputted to monitors 18 and 14 on the receiving side. The teaching material of this TV learning system is the data base 8 in the terminal on the teacher side. Students previously transmit necessary parts of the teaching data to their own terminals through control data signal lines, file data signal lines, and terminal switching controlling sections 6 and teach themselves after outputting the data to be monitors 18. A handset 15 is provided with the part of the transmitter-receiver of a telephone set. Therefore, the students teach themselves when they do not have any question, but can ask the teacher through the TV phone function when they have questions. The questions and answers can be monitored by all students.

Description

[Detailed Description of the Invention] ■Technical Field This invention is based on CAI (Computer As5ist).
This invention relates to a TV learning system in which a TV telephone, which is an advanced information communication system, is introduced in the ed.

CAI broadly refers to a computer-based educational system. You can learn while interacting with the computer. You can proceed with learning according to the level of the learner.
There is an advantage.

(a) Prior Art Most conventional CAI learning systems simply involve questions and answers between a computer and a learner.

Information is entered into the computer using a keyboard, and information from the computer is presented as images on a television screen. This is a system that primarily involves interaction between a computer and an individual, and there are no students or teachers.

Furthermore, there are times when a teacher broadcasts a lesson to a large number of students. Information is sent from the teacher to the students through audio and television images.

It doesn't matter how many students you have. You can study at the same time. However, students are unable to ask questions to their teachers. It was a one-way class.

Sec.) Problems that the invention aims to solve With video learning, which involves interacting with a computer, it is not possible to receive guidance from a teacher while studying using teaching materials. This is because the teacher is absent.

When a teacher broadcasts something to a large number of students, there is no reaction from the students. For this reason, the teacher cannot check the level of understanding on the student's side. As a result, teachers do not know what is the appropriate base for learning.

Since students cannot ask questions to the teacher, students' questions cannot be clarified.

There are such problems. The current system does not allow for appropriate instruction according to the student's level. Therefore, a sufficient learning effect cannot be expected.

These difficulties can be resolved by bringing the method closer to the way actual classes are held. In other words, there are multiple students and one teacher, and questions and answers can be held between them, and the content of the questions can be intercepted by other students.

In order to do this, it is necessary to have both a computer function for handling teaching materials and a video telephone system.

CAI that has both PC functions and video phone functions
The system did not previously exist.

B) Configuration The learning system of the present invention has the following features.

(1) It is a learning system consisting of many students and one teacher. Each has terminal equipment.

(2) There is a line between the student and the teacher, and this line can pass images, audio, and control data file data. In other words, it has the function of a video phone.

(3) Information can be transmitted from teachers to students through images and sounds. Information can be transmitted from students to teachers through images and audio. In other words, questions can be asked.

(4) Other students can overhear the question and answer session between the teacher and students.

Although this system has such features, the general configuration of this system is shown in FIG. 1.

On the teacher's side, there is a teacher terminal 1, a signal connection control unit 2, and a CO that converts and inversely converts signals such as image and audio into coded data.
There are DEC3, Database 8, etc.

Database 8 stores teaching material data.
.

On the student side, there are a plurality of student terminals 7, a CODEC 5, a terminal switching control section 6, and the like. Since there are a number of student terminals 7, it is necessary to select which of them to connect to the teacher terminal 1. Therefore, there is a terminal switching control section 6, which is connected to all student terminals.

The teacher terminal 1, signal connection control unit 2, and CODEC 3 each
Connected so that signals can be exchanged.

There are three types of signal lines. There are three types: an image signal 9, an audio signal 10, control data, and a file data signal 11.

The signal connection control unit 2 and the database 8 containing teaching materials are:
They are connected so that image signals 9, control data, and file data signals 11 can be exchanged.

The reason why the database 8 does not have an audio signal line is because the teaching material is not output in the form of audio.

Here, the image signal line, audio signal line, control data, and file data may be transmitted via separate and independent signal lines, or a mixed signal of these may be created and transmitted via a smaller number of signal lines. It is also possible to do so.

Teacher terminal 1 includes a computer 12, a camera 13, and a monitor 1.
4, a handset 15, etc.

The same applies to the student terminal 7. Individual student terminals 7 are connected to personal computers 16. Camera 17. It is equipped with a monitor 18 and a handset 19.

The student terminal 1, the terminal switching control section 6, and the GODEG 5 are connected by a signal line.

The student terminal 7 and the terminal switching control section 6 are connected so that image signals 9, audio signals 10, control data, and file data signals 11 can be exchanged.

The terminal switching control section 6 and the CODEC 5 are connected so that the image signal 9 and the audio signal 10 can be exchanged.

The teacher's CODEC 3 and the student's CODEC 5 are connected by a line 4. Line 4 is an optical fiber code,
Electric wire or wireless.

Signals are transmitted after being put into a form suitable for these media.

The control data and file data signal 11 are CODEC
Information is exchanged between teachers and students over the line, without going through 3 and 5.

The operation of the configuration shown in FIG. 1 will be explained.

Images input from cameras 13 and 17 are CODEC
3 and 5, it is converted into code data. This reaches the receiving side CODEC via line 4, where it is inversely converted and becomes image data. This is output to the receiving side monitor 18.14.

Transmission and reception are bidirectional. Sometimes it is sent from the teacher to the student, and sometimes from the student to the teacher.

The teaching materials are on the teacher's terminal. This is database 8.

The student transmits the necessary part of the teaching material data in advance to his own terminal via the terminal switching control section 6 through the control data and file data signal lines, and outputs it to the monitor 18. Study by yourself. Since the teaching material data is transmitted one after another, students can study independently.

Handset 15 comprises the transceiver part of the telephone.

Students will continue with their own study unless they have any doubts, but if they have any doubts, T
You can ask questions to your teacher using the V-phone function.

This response can be intercepted by other students.

The exchange of signals at the student terminal will be explained with reference to FIG.

CODEC5 on the student side receives the code data from line 4,
Convert back to video and audio signals. It also converts the video signal and audio signal given from the student side into code data and sends it to the line 4.

Video signal 91 sent by CODEC 5 to terminal switching control unit 6
transports an image of the teacher or an image containing the teacher and teaching materials.

The terminal switching control section 6 selects a specific student terminal and outputs it as a video signal 92.

The student terminal 7 has a signal connection control section 20, which removes unnecessary video and audio signals and receives only necessary video and audio signals.

In this way, the video signal of (teacher) or (teacher + teaching materials) is transmitted only to the student terminals that require it, and
8 is displayed.

The same applies to audio.

The teacher's audio signal 101 that was inversely converted by CODEC5 is
The terminal switching control unit 6 sends the audio signal 102 to the required student terminal.

A video signal 93, a video signal 94, and an audio signal 103 are sent from the student terminal 7 to the terminal switching control section 6.

The video signal 93 carries images of students or images including students and teaching materials. This is necessary when a student asks a question to the teacher.

The video signal 94 is for sending images for creating a composite screen. The composite screen is monitor 1 of a student terminal.
This is the image output in 8.

A video signal 94 is sent out so that other students can display this image on a portion of their monitors.

This allows other students to see and hear the content of the question and answer session between the teacher and a specific student.

The video signal 92 and the audio signal 102 can be received by selecting either the signal from the teacher's terminal or the signal from other students, and by receiving both, the monitor screen can be divided and both can be displayed at the same time. You can also.

GODI: Control signal 1 between C5 and terminal switching control unit 6
12 are exchanged.

Control signals or data signals are transmitted and received between the terminal switching control section 6 and the student terminal 7 via a control line 111.

The terminal switching control section 6 and the teacher's terminal are connected by a control line 110. It sends and receives control or data signals.

In the configuration shown in FIG. 2, the operation will be explained.

The student terminal 7 retrieves teaching materials from the database 8 on the teacher terminal and displays them on the monitor 18 for self-study. This is the only case where there is no need to communicate with the teacher.

If you have a question or need to communicate with your teacher for some reason, please do the following:

In order to communicate with the teacher, the student terminal 7 takes an image including the student or the student and the teaching material with the camera 17 and sends it to the terminal switching control section 6. This corresponds to the video signal 93. This is a moving image and a still image.

At the same time, the student sends the image shown on his/her own monitor 18 to the terminal switching control section 6 in order to have other students' terminals intercept the lesson content of his or her own station. This is the video signal 94. This is actually a composite image of the output image consisting of (student/student+teaching material) and the image shown on the monitor, and is sent to the terminal switching control section 6.

Self-study using individual teaching materials continues on other students' terminals. The Q&A session with other students can be projected onto a portion of the monitor, allowing you to overhear the exchange between students and teachers.

Alternatively, you can continue with your own learning and ignore the responses of other students and the teacher.

In this way, each student terminal receives a camera image of itself, an image sent from the terminal switching control unit 6 from the teacher or another student terminal, or an image showing the teaching material. , can be superimposed and displayed on the monitor 18 of the own station.

Alternatively, it can also be displayed on the monitor 18.

Furthermore, these images can also be sent to the terminal switching control section 6.

The terminal functional configuration will be explained with reference to FIG.

The teacher's terminal and the student's terminal are almost the same, but the teacher's terminal has a teaching material database 8, while the student's terminal does not.

In the case of a teacher terminal, there is no terminal switching control unit 6 between it and (:0DEC:3).In the case of a student terminal, there is this.

This is not shown in FIG.

Cameras include portrait cameras 13a and 17a, and document camera 13b.
There is 117b. This is to image the teacher and students.

Monitor televisions 14 and 18 display images. The P and GB double signals are sent from the signal connection control section 20.

The handset 15, t9 is a terminal for transmitting and receiving videophone audio. It is similar to a telephone receiver.

The video deck 22 and the signal connection control section 20 exchange video signals and audio signals.

The video printer 26 receives the RGB signals and prints a color image.

The personal computers 12 and 16 have input means such as a keyboard 23 and a mouse 24. Also, characters and images are output to the printer 25 and printed on paper.

Computer is 70ppi disk FD, hard disk HD
2.Which storage device do you have?

In this manner, the terminal includes a pan controller for handling teaching materials, a signal connection control section 20 for controlling connections of video signals, audio signals, and control signals, and various input/output devices.

In addition to the above-mentioned functions, the signal connection control section 20 also has an image superimposition function.

FIG. 4 shows an image of the configuration of the processing section.

Moving images and still images from the CODEC pass through the terminal connection control section 30 and enter the first signal selection circuit 31 as NTSC signals.

There are four signal selection circuits, all of which have the function of selecting and outputting one of a plurality of input signals.

The NTSC signal has been referred to as a video signal.

national television 5yst
NTSC is an abbreviation for an community TV system. This is the standard method for color television used in the United States, Japan, and other countries. Any signal system that transmits video information may be used (not necessarily NTSC).

Portrait cameras 13a, 17a, document camera 13b,
17b.

NTSC signal from video deck 22 and CODEC
NTSC signals of still images and videos from the signal selection circuit 31
is input.

The signal selection circuits 31, 33, 34 are directly controlled by the signal connection control section 20.

The second signal selection circuit 32 includes a Pin P controller 42
It is indirectly controlled through

The first signal selection circuit 31 selects and outputs two of the input signals.

One video signal is processed by the signal processing circuit 35. A/D circuit 36, reduction processing section 37, reduction F, M, circuit 38, D
/A circuit 39 and is converted into a reduced image.

The Pin P controller 42 has a function of fitting a reduced image into a part of the full screen. Picture this
n picture This is called the picture-in-picture function.

In order to reduce an image, it is necessary to convert an analog video signal into a digital signal.

Furthermore, a frame memory is required to temporarily store the reduced image bit by bit in association with pixels. This is the reduced F%M1 circuit 38.

After the reduction is completed, the signal is returned to the NTSC signal, which is an analog signal. Memory controller 40 controls such operations.

What is the difference between a full screen image signal and a reduced image signal?
It enters the second signal selection circuit 32 in the form of SC.

Three of these outputs pass through the fourth signal selection circuit 34,
Send images to other terminals.

The NTSC signal of the image to be displayed on this terminal is NTSC.
C-, and becomes an RGB signal through the RGB converter 43.

This is a signal representing the intensity of the three primary colors R%G, B.

This is further added to the RGB signals of another image provided from the personal computers 12 and 16 in a superimpose circuit 44. This passes through the signal selection circuit 33 and is output to the monitor 1.
8 is displayed. It is also printed on the video printer 26.

The same image is sent from the signal selection circuit 33 to the RGB decoder 4.
5. The signal is sent to another terminal via the signal selection circuit 34.

In this way, one terminal can display one of the video signals from the CODEC, the camera signal, and the video signal from the video deck in full screen, and reduce the other one to display a part of it. become able to.

(B) Effects The learning system of the present invention is a device that utilizes a video telephone function in the learning system.

Therefore, in the field of CAI, even when teachers and students are separated, they can learn as if they were sitting across a desk and having a conversation.

Teachers can check students' level of understanding and control the progress of education. Students can immediately ask questions and receive satisfactory answers. Other students can see and hear these responses.

It is an effective system with many educational effects.

[Brief explanation of drawings]

FIG. 1 is an overall schematic configuration diagram of the TV learning system of the present invention. FIG. 2 is a configuration diagram showing signal exchange at the student terminal. Figure 3 is a terminal function configuration diagram. FIG. 4 is a configuration diagram of the image processing section. 1... Teacher terminal 2... Signal connection control unit 3... CODEC 4... Line 5 ......CODEC 6...Terminal switching control section 7...Student terminal 8...Database 9... ......Image signal 10...Audio signal 11...Control data, file data signal 12...PC N13・
......Camera 13a...Portrait camera 13b...Document camera 14...Monitor 15...
・・・Handset 16・・・・・・PC 17・・・Camera 17a...
...Portrait camera 17b...Document camera 18...Monitoring 19...
...Handset 20...Signal connection control section 22...
...Video deck 23...Keyboard 24...Mouse 25...
...Blink-26...Video printer 30...
...Terminal connection control section 31-34...Signal selection circuit Mr. Sumi

Claims (1)

[Claims] A single computer equipped with a personal computer 12 for the teacher to input and process information, a camera 13 for capturing images of the teacher or teaching materials, a monitor 14 for displaying images, and a handset 15 for transmitting and receiving audio. A teacher terminal 1, a database 8 in which teaching materials are stored, and a signal connection control unit 2 that selects and sends signals from the teacher terminal 1 and the database 8.
, a CODEC 3 provided following the signal connection control unit 2 for converting video signals and audio signals into code data or inversely converting code data into video signals and audio signals, and a CODEC 3 for students to input and process information. A plurality of student terminals 7 each include a personal computer 16, a camera 17 for taking an image of the student, and a handset 19 for transmitting and receiving audio.
, 7, . . . , a terminal switching control unit 6 for selectively transmitting and receiving video signals and audio signals between all the student terminals 7, 7, . . . and the teacher terminal 1, and video signals and audio signals. A CODEC 5 is provided following the terminal switching control unit 6 to convert code data into code data or inversely convert the code data into video signals and audio signals, a CODEC 5 on the teacher's side, and a CODEC on the student's side.
It consists of a line 4 that connects the ODEC 5 and transmits encoded data, and at the student terminal 7 the student can connect the computer 16 and the monitor 1.
8 to proceed with self-study, and if you have any doubts, you can ask the teacher a question by taking an image of the teaching material or the teaching material and yourself using the camera 17, and talking to the teacher using the handset 19. , can respond to the student's questions by taking an image of themselves or both with the camera 13 and having a conversation with the handset 15, and other students can intercept the question and answer session between the student and the teacher and monitor the question and answer session on the monitor 18. A TV learning system characterized by being able to display a portion of the TV.