KR20020028675A - Real-time educating apparatus - Google Patents

Abstract

PURPOSE: An apparatus for the real time remote education is provided to increase the learning efficiency between a student and a teacher by displaying the study data on a common area without the delay or cut of the data transfer. CONSTITUTION: A voice input unit(110,310) such as a mike generates an electronic signal from the voice of the student or teacher and sends the electronic signal to a voice data processor(130,330). A voice output unit(120,320) outputs the electronic signal, which is impressed by the voice data processor, to the voice. The voice data processor converts the voice signal into the voice data, and sends the voice data to a data multiplexer or demultiplexer(160,360). Also, the voice data processor converts the voice data into the electronic voice signal and sends the electronic voice signal to the voice output unit. A study data input unit(140,340) creates the study data by perceiving the x,y coordinate and pressure, and sends the study data to the study data processor(150,350) and the data multiplexer or demultiplexer. The study data processor processes the study data and displays an image or character corresponding to the study data on the common area of a display unit(180,380). The data multiplexer or demultiplexer multiplexes and sends the voice and study data to a communication unit(170,370). Also, the data multiplexer or demultiplexer demultiplexes the multiplexed data and sends the voice/study data to the voice/study data processor. The communication unit sends/receives the data from the data multiplexer or demultiplexer to a learning server through the network. At this time, the demultiplexed data is communicated through the learning server between a teacher terminal and a student terminal. The display unit such as a CRT(Cathode Ray Tube) or LCD represents the image or text processed by the study data processor on the common area.

Description

REAL-TIME EDUCATING APPARATUS}

The present invention relates to a real-time remote tutoring apparatus, and more particularly to a real-time remote teaching apparatus that can prevent communication delays.

As is well known, conventionally, collective education was performed by gathering students in a school or academy at a certain time and conducting lessons by a specific instructor.

However, with the recent development of networks and the spread of computers, so-called remote lectures (or online education), which are taught remotely through a network, have recently emerged. Such remote lectures are free of time and space constraints, cost little, and give students the freedom to choose to receive an unlimited number of students (as long as network and server capacity is supported). Due to various advantages, it is emerging as an alternative to overcome the limitations of the existing collective education.

Such remote lectures can be classified into two types, broadcast type and reproduction type.

In the former case, the contents of lectures provided by a lecturer equipped with a camera, a microphone, an electronic board, and the like are unilaterally provided to students through airwaves or a communication line, and examples thereof include educational broadcasting and cable broadcasting of EBS. Since the broadcast type remote lectures are conducted in one direction, there are many problems regardless of the students 'understanding, and the students' classes cannot be managed.

On the other hand, in the latter case, the lecture contents of the lecturer are distributed to the students through the recording medium of the videotape, or the lecture contents downloaded in the form of a file are communicated to the students individually through communication. Like the broadcast type, the replay type remote lecture has the advantage that the student can watch repeatedly according to his / her understanding and can select and watch the desired lecture regardless of time. There is a problem that management is not made.

In addition, in both methods, students cannot ask the instructor, and even if they ask by fax or telephone, they cannot answer questions in real time as in the group education. There was a problem that the learning effect through is not reflected in the lecture. This results in a decrease in learning efficiency.

Because of the problems described above, despite the great advantages of remote lectures, which are low in cost and wide choice without being temporally and spatially constrained, conventional remote lectures have had limitations in replacing collective education.

On the other hand, in the above-mentioned conventional remote lectures, the transmission rate is often delayed or poorly connected due to the remote lecture including multimedia data, especially moving image data having a significantly larger data volume than text or voice data. As a result, it was difficult to provide remote lectures.

The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a remote lecture apparatus and method that can stably perform real-time remote lectures for a large number of students.

In order to achieve the above object, in the present invention, the instructor terminal and the learner terminal connected to the remote lecture server via the network, respectively, in the device for performing the remote lecture of the lecturer and the learner in real time, A voice input means for converting voice into data, handwriting means for recognizing coordinate values of a handwritten image desired by the instructor and the student, and generating handwriting data, and the voice data and the handwriting data between the instructor terminal and the student's terminal Data multiplexing and demultiplexing means for multiplexing the data, and multiplexing the multiplexed data received at the other side into the voice data and the handwriting data, an image corresponding to the coordinate values of the writing data generated by the writing means, Counterpart demultiplexed by the multiplexing and demultiplexing means The image corresponding to the coordinate value of the write data, provides a real-time remote devices Steels having the handwritten data processing means to be displayed in the same area.

L is a configuration diagram of a general remote lecture system,

2 is a block diagram of a real-time remote lecture apparatus according to the present invention,

3 is an exemplary view of a common display area according to the present invention.

♣ Explanation of symbols for the main parts of the drawing

100: lecturer terminal 200: network

300: student terminal 400: remote lecture server

110, 310: voice input means

120, 320: audio output means

130, 330: voice data processing means

140, 340: handwriting data input means

150, 350: handwriting data processing means

160, 360: means of data multiplexing and demultiplexing

170, 370: communication means

180, 380: display means

Hereinafter, a remote lecture apparatus according to the present invention with reference to the accompanying drawings as follows.

The core technical idea of the present invention is to provide a common area that can be used by both the instructor and the learner, and to improve the learning efficiency of the remote lecture, and to process the writing data transmitted from the transmitting side on the receiving side. Display, thereby reducing the amount of data transmitted and received while allowing both to answer questions, thereby enabling the instructor and the learner to improve learning efficiency through query / response in real time without delay in transmitting and receiving data. ” The following description will be understood from such a core technical idea.

The device of the real-time remote field according to the present invention is employed in the general remote lecture system shown in FIG. 1, and is particularly employed in the instructor terminal 100 and the student terminal 300. The network 200 is a communication network for data transmission and reception, such as the Internet, and the remote lecture server 400 is a server that manages authentication and interconnection of the instructor terminal 100 and the student terminal 300, and a conventional network and server. Since the structure and function similar to the description thereof will be omitted.

In the remote lecture system shown in Figure 1, the instructor terminal 100 and the student terminal 300 is basically the same structure, a general personal computer (PC: personal computer), education dedicated terminal, PDA (personal digital assistant), A wireless terminal or the like is used to transmit and receive data to and from the network 200.

The real-time remote lecture apparatus according to the present invention which is employed in such a lecturer terminal 100 and the student terminal 300, respectively, as shown in Figure 2, voice input means (110, 310), voice output means 120 320, voice data processing means 130, 330, handwriting data input means 140, 340, handwriting data processing means 150, 350, data multiplexing and demultiplexing means 160, 360, communication means 170 , 370, and display means 180 and 380, and the configuration and functions of the instructor terminal 100 and the learner terminal 300 are the same.

First, the voice input means (110, 310) is composed of a microphone or the like, the voice input from the instructor or attendee generates an electrical signal, and transmits the generated electrical signal to the voice data processing means (130, 330).

The audio output means 120, 320 is composed of a headphone, a speaker, or the like, and outputs an electrical signal applied by the voice data processing means 130, 330 as voice. The voice output means 120, 320 may be a headset composed in combination with the above-described voice input means (110, 310).

The voice data processing means (130, 330) is composed of a sound card (sound card) or the like, the voice signal applied from the voice input means (110, 310) is sampled and converted into voice data, and the converted data is converted into data. It provides to the multiplexing and demultiplexing means (160, 360). In addition, the voice data provided from the data multiplexing and demultiplexing means 160 and 360 are converted into electric voice signals, and the converted electric voice signals are provided to the voice output means 120 and 320.

The writing data input means (140, 340) is composed of a mouse, a graphic tablet and a mouse pen, and generates the writing data by detecting the x, y coordinates and pressure corresponding to the operation of the instructor or the learner, The handwriting data is provided to the handwriting data processing means 150 and 360 and the data multiplexing and demultiplexing means 160 and 360, respectively. At this time, the x, y coordinates represent the movement trajectory of the mouse pen (or mouse), and the pressure represents the shade of the line to express the natural writing style. As an example of the writing data input means, if the present applicant is disclosed in the patent application No. 2000-27293 filed on May 20, 2000 under the name of "Pen device for graphic tablet", the detailed description is omitted.

The writing data processing means 150, 350 is composed of a graphic card or the like and processes the writing data provided from the writing data input means 140, 340 or the data multiplexing and demultiplexing means 160, 360. , An image, a character, or the like corresponding to the handwritten data is displayed in a common area displayed on the display means 180,380.

The data multiplexing and demultiplexing means 160 and 360 multiplex the voice data input from the voice data processing means 130 and 330 and the writing data input from the handwriting data input means 140 and 340 based on the data transmission / reception protocol. The multiplexed data is then provided to the communication means 170 and 370. Further, after demultiplexing the multiplexed data received from the communication means 170 and 370 into the voice data and the handwritten data, the voice data is provided to the voice data processing means 130 and 330, and the handwritten data is transmitted to the handwritten data processing means ( 150, 360).

Communication means (170, 370) is made of a modem or a dedicated terminal adapter (terminal adapter), etc., data received from the data multiplexing and demultiplexing means (160, 360) to the learning server 400 through the network 200 Or provide the multiplexed data provided from the learning server 400 through the network 200 to the data multiplexing and demultiplexing means (160, 360). At this time, each demultiplexed data is transmitted and received between the instructor terminal 100 and the student terminal 300 through the learning server 400.

The display means 180 and 380 are constituted by a display device such as a cathode ray tube (CRT) or a liquid crystal display (LCD), and display an image or text processed by the writing data processing means 150 or 350 on a common area. Display. In this case, the common area may be provided from the instructor server 400.

Hereinafter, an operation process of a real-time remote lecture apparatus according to the present invention configured as described above will be described with reference to FIG. 3. At this time, all data transmission and reception of the instructor terminal 100 and the student terminal 300 is made through the network 200, and selectively made through the remote lecture server 400, description thereof will be omitted to avoid repetition. .

First, when the lecturer terminal 100 and the learner terminal 300 are interconnected through the network 200 by the remote lecture server 400, the display means 180 and 380 of both terminals 100 and 300 are remotely connected. The common area 10 as shown in FIG. 3 is displayed based on the initial screen (ie, common area) data provided from the lecture server 400. In this case, in another embodiment, the video of the instructor and the student may be displayed by using an image input device such as an image camera instead of the common area, or the common area and the video may be interchanged.

Then, when the lecturer terminal proceeds to lecture, the voice of the lecturer is converted into an electrical signal by the voice input means 110, and then applied to the voice data processing means 130.

The voice data processing means 130 converts the electrical voice signal applied from the voice input means 110 into voice data and then provides the voice data to the data multiplexing and demultiplexing means 160. At this time, if there is no handwriting content, only voice data is multiplexed by the multiplexing and demultiplexing means 160, and then provided to the learner terminal 300 through the communication means 170. At this time, in another embodiment, when there is no input of the writing data, the video data of the instructor may be configured to be transmitted to the student terminal 300.

The multiplexed data provided from the instructor terminal 100 is received by the communication means 370 and provided to the multiplexing and demultiplexing means 160, and the multiplexing and demultiplexing means 160 is provided via the communication means 170. Demultiplex the multiplexed data provided by < RTI ID = 0.0 > At this time, since there is no handwriting data, it is demultiplexed with only voice data. The demultiplexed voice data is converted into an electrical voice signal by the voice processing means 130 and then output as voice to the user by the voice output means 120.

When the instructor manipulates the writing data input means while the above-described process is in progress, the writing data input means 140 writes the writing data including the x, y coordinates and the pressure value of the trajectory input by the instructor. And the data multiplexing and demultiplexing means 160, respectively.

The handwriting data processing means 150 displays an image or text based on the coordinate value and the pressure value of the handwriting data provided from the handwriting data input means 140 in a common area on its display means 180.

Meanwhile, the data multiplexing and demultiplexing means 160 multiplexes the handwritten data provided to the handwritten data input means 140 and the voice data provided from the voice data processing means 130 and then transmits the multiplexed data to the communication means ( Provided to the student terminal 300 through 170. Of course, when voice data is not provided from the voice data processing means 130, only handwritten data is multiplexed and provided to the student terminal 300. In addition, at this time, the image file stored in the storage unit (not shown) or the like required by the instructor or the user, in addition to the handwritten data and voice data, may be transmitted, and the image file 50 transmitted as described above may be transferred to the text or image corresponding to the handwritten data. It may also be configured to display on the common area 10 together.

The thus provided multiplexed data is received at the communication means 370 of the student terminal 300 and then provided to the multiplexing and demultiplexing means 360. The multiplexing and demultiplexing means 360 demultiplexes the multiplexed data received through the communication means 370 into voice data and handwriting data, and then provides the voice data to the voice data processing means 330, respectively. The handwriting data processing means 350 is provided. The voice data processing means 330 converts the voice data provided from the multiplexing and demultiplexing means 360 into an electrical voice signal and outputs the same to the user through the voice output means 320. In addition, the writing data processing means 350 displays an image or text corresponding to the coordinate value and the pressure value of the writing data provided from the multiplexing and demultiplexing means 360 on the common area 10 of the display means 380. Display. Accordingly, the common area 10 in which the same image (or text) 20 is displayed is displayed on the display means 180 of the instructor terminal 100 and the display means 380 of the student terminal 300.

On the other hand, when the learner marks a specific part on the common area with a specific question (when writing) during the above-described process, voice data and handwriting from the instructor terminal 100 to the learner terminal 300 are described. Similar to the process in which data is transmitted and displayed, the process is performed from the learner terminal 300 to the lecturer terminal 100 to display the common area 10 and the learner terminal 300 displayed on the display screen 180 of the lecturer terminal 100. The same image (or text) is displayed on the common area 10 displayed on the screen 380. In this case, the pointers 30 and 40 of the instructor and the learners may be additionally displayed in the common area 10 and may be configured to be distinguished from each other by color or shape.

In addition, while the above-described process is in progress, the data received by the student terminal 300 may be stored as a lecture file in a separate storage means (not shown), and may be configured to be viewed repeatedly.

According to the present invention, since the instructor and the learner can mutually answer questions using the same area, the learning efficiency can be improved by increasing the rapport between the instructor and the learner.

In addition, since handwriting data is composed of coordinates and input values, the current 5 × 5 tablet has approximately 12,000 x and y values, so each can be processed in 14 bits, and the pressure value is approximately 256 steps. Since the data can be processed and data read is performed about 128 times per second, it can be seen that the data transfer rate required for transmitting handwritten data in real time is about 34 bits x 128 = 4.35 Kbps. In the case of a modem using a telephone line, a transmission speed of 56Kbps is supported, and a dedicated line supports up to 1Mbps, which means that the modem can be transmitted in real time without delay. Therefore, there is also an effect that the learning efficiency can be prevented from being lowered due to transmission rate delay or poor connection.

Claims (4)

In the device that is mounted on the lecturer terminal and learner terminal connected to the remote lecture server via a network, respectively, in the device to perform the remote lecture of the lecturer and the learner in real time, Voice input means for converting voices of lecturers and students into data; Writing means for generating handwriting data by recognizing coordinate values of the handwritten image desired by the instructor and the student; Data multiplexing and demultiplexing means for multiplexing the voice data and the handwritten data to be transmitted to the counterpart between the instructor terminal and the student terminal, and demultiplexing the multiplexed data received at the counterpart to the voice data and the handwritten data; Handwriting data processing for displaying an image corresponding to the coordinate value of the writing data generated by the writing means and an image corresponding to the coordinate value of the counterpart writing data demultiplexed by the multiplexing and demultiplexing means on the same area. Way Real-time remote lecture apparatus having a. The method of claim 1, The writing means, The instructor and the learner further comprises a pressure value for detecting the pressure of the handwritten image to generate the handwriting data, The writing data processing means expresses the shape based on the coordinate value, and expresses the density of the shape based on the pressure value. The method according to claim 1 or 2, The real-time remote lecture device, And storing means for storing the image or text separately, The handwriting data processing means further includes an image or text requested from the lecturer or a student among the images or text stored in the storage means, and an image or text of the other side demultiplexed by the data multiplexing and demultiplexing means on the common area. Real-time remote lecture device, characterized in that for displaying. The method according to claim 1 or 2, The real-time remote lecture device, It is further provided with an image input device capable of inputting a moving picture of the instructor or student, And the writing data processing means switches between the common area and the counterpart video in accordance with the data transmitted from the counterpart.