KR20030086706A - The remote education methol and equipment for duplex satellite - Google Patents

Abstract

PURPOSE: An interactive remote education service method and system is provided to offer interactive education contents of moving pictures to a client without a time delay via a satellite multicasting service. CONSTITUTION: The system comprises a central station system(140), a data station system(230), a user terminal(260), a remote education server(220), a satellite antenna(120), and a satellite(110). The central station system(140) includes a monitoring control and integrated network management system. The monitoring control and integrated network management system controls interfaces including a network interface, and a data transmission and receiving interface. The data station antenna(230) includes the data transmission and receiving interface connected to an interactive satellite network, and an indoor unit connected to the user terminal(260). The user terminal(260) includes an interface driver and an application software. The remote education server(220), connected to the central station system(140), receives request data from the user terminal(260), assesses the education result data, and stores the assessment data. The satellite antenna(120) transmits the data output by the central station system(140). The satellite(110) relays the data transmitted by the satellite antenna(120).

Description

Satellite interactive distance education method and system thereof {The remote education methol and equipment for duplex satellite}

The present invention relates to a satellite two-way remote education method and system, and more particularly, to provide a multi-casting service using satellite to a client who wants two-way remote education in the field of cyber education to transmit a clean video to the client without delay of speed. By doing so, two-way distance education can be achieved efficiently.

In recent years, with the generalization of the Internet, which connects networks around the world, information revolution has occurred in many parts, and most of daily life is made by computing work.

This computer environment is mainly based on the network, namely the Internet or intranet, and promotes the growth of the high value-added information and communication network industry, thereby expanding the social foundation and creating a high quality living environment without gaps between regions and classes. Is dramatically improving.

As such, the development of the information and telecommunications industry, which has a great influence on all areas of society, has also affected the education field without exception, overcoming the limitations of the school space by enabling distance education between educators and educators based on the Internet.

However, since the Internet still relies on public telephone networks, which have a limitation in transmission speed, Internet users who use Transmission Control Protocol / Internet Protocol (TCP / IP) require faster information transmission. Internet access service of the Internet has much more data than the message transmitted from user to internet network. It takes time.

Therefore, in the Internet distance education implemented in such an environment, the download speed is slowed and even the connection is often interrupted when many subscribers access at the same time, and alternatively, the Intergrated Service Digital Network (ISDN) and the Asymmetric Digital Subscriber Line (ADSL). The network is used, but at the same time, the service can be provided only in the local area because it cannot provide services in a large area, and there is still a problem that the speed is slowed down when many users connect at the same time. .

The main driving force to solve the weak network performance problem and to spread the multimedia market of video tele-education is to improve the network performance, and to satisfy the development trend of these services, and to satisfy the broadcasting and wide area. Satellites have emerged as the most suitable medium for communication.

The present invention is to solve the above problems, by providing a multicasting service using a satellite to a client who wants remote education in the field of cyber education can be efficiently conducted by sending a clean video to the client without delay of speed To provide a satellite two-way distance education system.

Satellite bi-directional distance education system of the present invention for achieving the above object, Satellite transmission and reception interface unit connected to the satellite network, monitoring control system unit connected to the satellite transmission and reception interface unit, network interface unit connected to the dedicated line (Optical Fiber) and A hub station system having an integrated network management system (NMS) for controlling each interface unit; A terminal station system having a satellite transmission / reception interface unit connected to a satellite network and an door unit for transmitting and receiving data of a user terminal; A user terminal having an interface driver unit and an application software unit connected to the terminal station system; A server device connected to the central station system for receiving data requested from the user terminal, evaluating, managing and storing data performed by a user; A satellite antenna for transmitting information output from the central station and the terminal station system; A satellite for relaying and transmitting information output from the satellite antenna; And a satellite receiver for receiving the information transmitted from the satellite.

In addition, the satellite two-way distance education method is a step of checking whether the user is a member, if the user is a member receiving data and delivering the desired training data and video training data to the user terminal using satellite communication means, the user And processing the created learning data and the test data.

1 is a block diagram of a satellite interactive distance education system according to the present invention

Figure 2 is a detailed view of the distance learning server system of Figure 1

Figure 3 is a flow chart showing a satellite two-way distance education method according to the present invention

<Description of Symbols for Main Parts of Drawings>

110: satellite 120: central station satellite antenna

130: terminal station satellite antenna 140: central station system

150: central station satellite transmission and reception interface unit

160: supervisory control system unit 170: network interface unit

180: hub satellite processor 190: hub protocol processor

200: Integrated network management system part 210: Optical fiber

220: distance education server system 230: terminal station system

240: terminal station satellite transmission and reception interface unit

250: interior unit unit 260: user terminal

270: interface driver unit 280: application software unit

1 is a configuration of a satellite bidirectional distance education system applied to the present invention, a central satellite transmit / receive interface 150 connected to a satellite network, a tax cut control system unit 160 connected to the central station satellite transmit / receive interface unit 150, and Central station system 140 having a network interface unit 170 connected to an optical fiber 210 and an integrated network management system unit 200 for controlling each interface unit, and a terminal station satellite transmission / reception connected to a satellite network A terminal station system (230) having an interface unit (240) and an indoor unit unit (250) for transmitting and receiving data of a user terminal; A user terminal 260 having an interface driver unit 270 and an application software unit 280 connected to the terminal station system 20; and from the user terminal 260 connected to the central station system 140. A distance learning server system 220 that receives the requested data and evaluates, manages and stores data performed by the user; A central station and terminal station satellite antennas 120 and 130 for transmitting information output from the central station and terminal station systems; A satellite (110) for relaying and transmitting information output from each of the satellite antennas; It comprises a satellite receiver for receiving information transmitted from the satellite.

The satellite two-way distance education system transmits a large amount of multimedia information from the central station system 140 to the user terminal 260 through a high speed satellite link, and sends a message from the user terminal 260 to the central station system 140. Similarly, the transmission network is configured to transmit via satellite link. As a result, the Internet user can transmit and receive a large amount of multimedia data at a faster speed than in the prior art.

The central station system 140 is connected to the server system 220 for distance education via a dedicated line 210. Here, the central station system 140 includes a network interface unit 170 and a satellite transmission / reception interface unit 150, and the terminal station system 230 includes a satellite transmission / reception interface unit 240 and an indoor unit 250. In addition, the user terminal 260 includes an interface driver 270 and an application software 280. The satellite interactive distance learning system supports the TCP / IP protocol to provide a multimedia service.

The satellite transceiving interface unit 150 and 230 is a function unit for accessing the satellite 110 through which a large amount of multimedia data is transmitted to the user terminal 260.

The network interface unit 170 is a function unit for connecting the central station system 140 and the server system 220 through the dedicated line 210. The network interface unit 170 transmits a user's message to the server system 220. Processing the multimedia data received from the) and transmits to the satellite transmission and reception interface unit 150 in the central station system 140.

The satellite 110 used by the distance learning system is Mugunghwa 3 satellite launched by KT (formerly Korea Telecom), and the performance of the satellite network is as follows. The transmission speed is downlink 256Kbps ~ 8.192Mbps, uplink 38.4 ~ 153.6Kbps, frequency band is 14.078 ~ 14.087GHz for transmission, 12.330 ~ 12.339GHz, and basic protocols are TCP / IP and MPEG-1. The equipment of the terminal station system is a satellite transceiver and an offset antenna, and the connection between the satellite transceiver and the user terminal (PC) is the Internet Protocol (TCP / IP) method. The training program is sent in real time in the form of multicasting, and service is provided throughout the Korean peninsula, Asia and Australia.

The satellite two-way distance education system of FIG. 1 provides a satellite multicast service (IP multicast), and a video on a content is provided through a satellite in connection with an information provider's server providing a distance education service. Attaches a separate satellite transmission and reception equipment to the PC to access the satellite two-way distance education system.

FIG. 2 shows the server system 220 for distance education in FIG. 1 in detail.

As shown in FIG. 2, the server system 220 includes a connection part 32 connected to a dedicated line, an interface part 34 for outputting the input content to a corresponding device, and content input through the interface part 34. And an operating system 36 and an internet protocol unit 38 for operating the respective devices so that the corresponding devices can be processed. The server system 220 includes a WWW server 40 that is operated by the operating system 36 and that operates on the Internet protocol unit 38. The WWW server 40 transmits the data requested by the browser according to the HyperText Transfer Protocol (HTTP). Hypertext Transfer Protocol (HTTP) defines the protocol of communication between a browser and a server. The server system 220 is connected to the remote education execution unit 42 between the WWW server 40 and the database management unit 44. The distance learning execution unit 42 operates by the operating system 36 and operates while exchanging data with the WWW server 40. The distance learning execution unit 42 provides an educational program for the user to learn based on the function of the Common Gateway Interface (CGI), analyzes the contents of the learning, provides a moving image, and provides a user and server through a browser. Enable communication with each other. In addition, the server system 220 is connected to the database management unit 44 between the distance learning execution unit 42 and the database unit 46. The database manager 44 operates by the operating system 36, and outputs data necessary for the distance education execution unit 42 to operate with reference to the database unit 46. The database unit 46 outputs data required by the database manager 44 or stores data input through the database manager 44.

Operation of the satellite bidirectional distance learning apparatus according to the present invention configured as described above will be described in detail with reference to FIG.

The description of the operation of the device will be described with reference to the browser (A), WWW server unit (B), distance learning execution unit (C) and database management unit (D).

In addition, a person who intends to take cyber distance education according to the present invention accesses the website of the information provider and applies for registration as a member, and attaches a separate satellite transmission and reception equipment to the PC from the information provider to the satellite interactive education service. Will be able to receive.

When the user enters the Internet address of the WWW server unit B through the user terminal 260 under the condition that the user has received the satellite transmission and reception equipment and antenna for distance education from the information provider (step 300), the remote The WWW server unit B in the education server system 220 requests input of a user's name and password through the satellite transceiving interface unit 150 and the satellite 110 of the central station system 140 (step 302). When the user enters a name and password (step 304), it is transmitted to the WWW server unit B via the satellite transmission / reception interface unit 240 and the satellite 110 in the terminal station system 230, and the WWW server unit B ) Determines whether the user has been registered (step 306). The WWW server unit B transmits the member registration screen through the satellite 110 if the user is not registered (step 308), and allows the user to complete the member registration by re-entering the name and password (step 304). . WWW server unit (B), if the user is registered, the remote education by sending the home page for distance education to the user through the satellite transmission and reception interface unit 150 and satellite 110 of the central station system 140 so as to receive distance education Run the service (step 310). The homepage for distance education is the first page of the program for cyber distance education on a satellite interactive network. The user looks at the homepage for distance education and selects the user's personal information (ie, elementary, middle, high school, college student, public or enthusiast) and the learning process (step 312). The WWW server unit B drives the remote education execution unit C (step 314), so that the user can receive cyber distance education while exchanging data with the server to which the user is connected. The distance education execution unit (C) requests the analysis of the data to the database management unit (D) by processing the input data, that is, data such as personal information and learning process selection of the user (step 316). The database manager D retrieves and analyzes the requested data with reference to the database 46 and outputs the data to the distance learning execution unit C (step 318). The distance learning execution unit (C) creates an education page so that the user can be educated by referring to the input data and outputs it to the WWW server unit (B) (step 320), and the WWW server unit (B) inputs the education page. Is output via the satellite 110 to the browser A of the user terminal 260 (step 322). The user sees and learns the educational page output by the browser A (step 324). When the user's learning is completed, the browser A outputs the learning data to the WWW server 40 via the satellite 110. The WWW server 40 drives the distance education execution unit C to process the inputted learning data (step 326). As in step 316 and step 318, the distance learning execution unit (C) processes the input data in binary and requests a data analysis to the database management unit (D) (step 328). The database management unit (D) retrieves the input data and analyzes the data so that the user can take the test and outputs it to the distance education execution unit (C) (step 330), and the distance education execution unit (C) inputs the input data. A page for evaluation is created to evaluate the user's learning contents with reference to the WWW server unit B (step 332). The WWW server 40 outputs the input evaluation page to the browser A of the user terminal 260 via the satellite 110 (step 334). The user reports the test with the contents shown in the evaluation page retrieved through the browser A (step 336). When the user completes the test, the browser A sends the test data through the satellite 110 to the WWW server unit B ) The WWW server unit B drives the distance education execution unit C to analyze and store the input test data (step 338).

The distance learning execution unit (C) processes the input test data in binary, evaluates the test data (step 340), creates a result page (step 342), and analyzes the test result data and stores the result data in the database. Request to management unit D (step 344). The database unit 46 analyzes the input result data and stores the data for use as data on the learner's learning level the next time the user learns (step 346). Meanwhile, the distance learning execution unit (C) transmits the created result page to the WWW server unit (B). The WWW server unit B outputs the input result page to the browser A through the satellite 110 (step 348). The user completes the study by viewing the contents of the result page searched by the browser A on the screen.

As described above, the satellite two-way remote education method and the system according to the present invention provides a high-speed two-way service using satellite to the user who wants remote education in the field of cyber education to receive remote education as a clean video without delay of speed By doing so, it has the effect of making cyber education more efficient.

In addition, the present invention transmits a large amount of multimedia data from the user terminal to the central station system and a large amount of multimedia data from the central station system to the user terminal via a satellite bidirectional high-speed link to perform remote education to provide a large amount of multimedia information at high speed. Can be provided to Therefore, it solves the problem of speed and connection problems that occur when many subscribers access the existing coaxial cable and optical cable at the same time, and at the same time, provide remote education service and clean video to a large area, and use video multicast using IP multicast. The realization of education can cultivate experts in the field of cyber education.

Claims (6)

In the satellite interactive distance education system, A central station system having a satellite transmission / reception interface unit connected to a satellite bidirectional network, a network interface unit connected to a dedicated line, and a monitoring control and integrated network management system unit controlling each interface unit; A terminal station system having a satellite transmission / reception interface unit connected to a satellite bidirectional network and an door unit connected to a user terminal; A user terminal having an interface driver unit and an application software unit connected to the terminal station system; A remote education server system connected to the central station system for receiving data requested from the user terminal, evaluating, managing, and storing data performed by a user; A satellite antenna for transmitting information output from the central station system; And a satellite for transmitting and relaying information output from the satellite antenna. The system of claim 1, wherein the distance learning server system comprises: a connection portion connected to a dedicated line; An interface unit for outputting data input to the connection unit and an operating system; An operating system for operating each device to process data input from the interface unit; And And a remote education means operated by the operation system and configured to perform remote learning on a dedicated line and manage learned data. In the satellite interactive distance education method, Checking whether the user is a member; Receiving data when the user is a member and delivering desired learning data and real-time video education data to a user's terminal using satellite communication means; Satellite two-way distance education method comprising the step of processing the user-created learning data and test data. According to claim 3, the distance learning execution unit (C) processes the input data by referring to the database management unit 46 to search / analyze the requested data and output to the distance learning execution unit (step 318), WWW Step 324 of learning by the user while simultaneously outputting the educational page input to the server unit B to the WWW server 40 through the satellite 110 to the browser A of the user terminal 260; When this is completed, the browser A outputs the learning data to the WWW server 40 via the satellite 110 to drive the distance learning execution unit C to process the learning data (326), and the distance learning execution unit. (C) asks the database management unit (D) for data analysis, analyzes the data so that the user can take the test, outputs it to the distance education execution unit (C), and then evaluates the user's learning contents by referring to the input data. Outputting the evaluation page to the WWW server unit (B) In step 338, the user takes a test with the contents shown on the evaluation page and outputs the test date to the WWW server unit B through the satellite 110 to drive the distance learning execution unit C (338). ), And the distance learning execution unit (C) analyzes and stores the missing data created by processing the input data as binary in the database management unit (D), and then writes the result page to the WWW server unit through the distance education execution unit (C). (B), and the user finishes the learning by looking at the contents displayed on the screen of the result page retrieved by the browser (A), characterized in that the satellite interactive learning method. 4. The satellite bidirectional distance learning method according to claim 3, wherein the distance education execution unit (C) processes the input data in binary. The method of claim 3, wherein the satellite communication means A central station system, a terminal station system, a satellite transmitter, a satellite transmitter antenna, a satellite receiver and a satellite receiver antenna, characterized in that the satellite two-way remote education method.