KR20020011653A - Internet service system using satellite - Google Patents

Abstract

PURPOSE: An Internet service system using an artificial satellite is provided to connect various subscriber networks with television systems using a set-top box so as to enable both way communication, to allow users to be able to be provided with ultra-high-speed artificial satellite Internet service without purchasing computer systems. CONSTITUTION: An Internet service system using an artificial satellite has a main server(10) providing information services including shopping information, chatting service, mail service and network games and a variety of Internet services according to a user's choice, and a relay server(20) that is connected with a plurality of users(60) through a subscriber network(40), transmits an information request signal of each user to the main server and sends information data delivered from the main server to each user through the subscriber networks. The system further includes a satellite transmitter/receiver(31,32) that is connected to each of the main server and the relay server and transmits/receives a data information signal between the main server and the relay server using both way communication through an artificial satellite, and a set-top box(50) connected between the subscriber network and the users to enable both way communication.

Description

Internet service system using satellites {INTERNET SERVICE SYSTEM USING SATELLITE}

The present invention relates to an internet service system using satellites, and more particularly, to an internet service system using satellites using a set-top box that enables two-way communication between a subscriber network and a user.

As the use of the Internet spreads rapidly, the number of users is increasing rapidly, and the use field is also used in various forms such as shopping, information use, network games, and chat. And Internet service providers (ISPs), which provide this type of Internet service using the Internet, are growing rapidly.

In addition, the number of ISPs that provide Internet services using a high-speed communication network in recent years has increased, and satellites that enable the use of high-speed Internet services using a wireless Internet access method that uses the advantages of satellite communication such as wide area and broadcasting are available. ISPs that provide Internet services have also increased.

Internet service using satellites has the advantage of being limited to the region by using a satellite network such as a telephone line or ISDN for a small amount of uplink data transmission, and a satellite using a satellite data transmission method for receiving a large amount of information. Broadband services are available without marginalized areas such as mountains and mountainous areas.

However, in the above-described conventional technology, although a short distance user can use a dial-up service (PPP) or a leased line service to access an ISP that provides satellite Internet service, remote users, in particular, foreign users cannot use the leased line service. You must connect to an ISP that provides satellite Internet service through a dial-up service. Therefore, the user using the satellite Internet service through a dial-up service at a long distance increases the cost burden, it is difficult to use the high-speed services provided through the satellite Internet. In addition, since this service is based on a computer system, the cost of purchasing a computer is high.

Accordingly, an object of the present invention is to solve the above-described problems, and to provide an Internet service system that allows a user to receive an Internet service using a satellite using a television.

1 is a block diagram of an Internet service system using a satellite according to an embodiment of the present invention.

2 is a block diagram of the system of FIG. 1 where the subscriber network is a coaxial cable network.

3 is a block diagram of the system of FIG. 1 when the subscriber network is xDSL.

4 is a block diagram of the system of FIG. 1 when the subscriber network is a B-WLL.

5 is a block diagram of a set top box in the system of FIG.

6 is a block diagram of an internet service system using satellites according to a second embodiment of the present invention.

7 is a block diagram of the system of FIG. 6 where the subscriber network is a coaxial cable network.

8 is a block diagram of the system of FIG. 6 when the subscriber network is xDSL.

9 is a block diagram of the system of FIG. 6 where the subscriber network is a B-WLL.

As a means for achieving the above object, the present invention provides a shopping server according to a user selection, a chat service, a mail service, an information service including a network game and a main server for providing various Internet services; A relay server connected to a plurality of users through a subscriber network, transmitting information request signals of each user to the main server, and transmitting information data transmitted from the main server to each user through the subscriber network; A satellite transceiver connected to the main server and the relay server, respectively, to transmit and receive data information signals between the main server and the relay server through bidirectional communication through satellites; And a set top box connected to enable bidirectional communication between the subscriber network and the user.

The subscriber network serves as a two-way communication medium between the relay server and the user, and a general subscriber network may be used.

Examples of such subscriber networks include coaxial cable networks, x Digital Subscriber Line (xDSL), and Broadband-Wireless Local Loop (B-WLL).

The user has a television for connection with the subscriber network, and the connection between the television and the subscriber network is achieved by a set top box.

The set-top box operates to facilitate two-way communication between the subscriber network and the user's television, so that the user can use the television to receive Internet service through satellites.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of an Internet service system using a satellite according to an embodiment of the present invention.

As shown in FIG. 1, the Internet service system using the satellite according to the embodiment of the present invention includes a main server 10, a relay server 20, satellite transceivers 31 and 32, routers 11 and 21, and an ISP ( 12), a backup line 33, subscriber network 40, and set-top box 50.

The main server 10 stores user registration information, and transmits various information services such as shopping information, chat service, mail service, and network game according to the user's 60 selection, and the user can use various Internet services. Make sure

The relay server 20 is connected to the plurality of users 60 through the subscriber network 40 and the set-top box 50, transmits the information request signal of each user 60 to the main server 10, the main The information data transmitted from the server 10 is transmitted to each user 60 side.

The satellite transceivers 31 and 32 are connected to the main server 10 and the relay server 20, respectively, and RF (radio) for modulating and demodulating data signals transmitted from the main server 10 and the relay server 20 into satellite communication signals. frequency) and a satellite antenna for transmitting the signal demodulated by the RF module to the satellite (S) and receiving the signal to the satellite (S).

As a result, data transmission and reception between the main server 10 and the relay server 20 is performed through the satellite (S).

The routers 11 and 21, which are connected between the main server 10 and the transceiver 31, and the relay server 20 and the transceiver 32, respectively, provide functions for connecting networks having different structures from each other. Data sent and received in the network is restricted to move only in the partial network, eliminating unnecessary work that may occur in the network.

The ISP 12 provides various types of Internet services such as shopping information, information use, network games, and chat.

On the other hand, the backup line 33 includes a cable for enabling data communication between the main server 10 and the relay server 20 by wire, and the data communication between the main server 10 and the relay server 20 Even when there is a failure in satellite communication for the data communication between the main server 10 and the relay server 20 to be possible.

The subscriber network 40 includes a coaxial cable network, xDSL, B-WLL, and the like, and bidirectional communication is performed between each subscriber network 40 and the set top box 50.

The user 60 is provided with a television that is connected to the set top box 50 and can receive Internet service through the relay server 20.

2, 3, and 4 are diagrams illustrating an Internet service system using satellites according to an embodiment of the present invention for each subscriber network.

2 is a block diagram of an Internet service system using a satellite according to an embodiment of the present invention when the subscriber network 40 is a coaxial cable network, and the relay server 20 and the set-top box 50 are coaxial cable networks 410. And via a cable modem 420.

The coaxial cable network 410 refers to a network used for cable television reception. A relay server 20 corresponding to a cable broadcasting station in each region is provided with a headend serving as a starting point of a cable television signal, thereby providing satellite and airwave broadcasting signals. Receive

The received satellite and airwave broadcast signals are transmitted from the headend through the coaxial cable network 410 to each user through the cable modem 420 and the set top box 50.

This cable facility is used for Internet access with broadband LAN technology. This technology enables the transmission of digital data using one or more 6 MHz channels over cable television networks.

The wideband LAN consists of two 6 MHz channels, each assigned for downlink transmission (relay server 20 to user 60) and uplink transmission (user 60 to relay server 20). In the relay server 20, the frequency converter connects two channels in one channel pair so that data can be transferred from one user to another.

3 is a block diagram of an Internet service system using a satellite according to an embodiment of the present invention when the subscriber network 40 is xDSL. The relay server 20 and the set-top box 50 may include a telephone station 430 and an xDSL ( 440, and xDSL modem 450.

xDSL technology is a new transmission technology that provides high-speed data transmission while guaranteeing the use of the existing general telephone line by using an unused upper band of the frequency band of the general telephone network. How fast a digital signal can be sent to an analog signal is basically determined by the frequency bandwidth (transmission capability) and the modulation scheme of the analog signal.

xDSL technology increases digital transmission speed by using analog bandwidth of telephone line to solve the problem of narrow bandwidth, which is a problem of telephone line. Telephone lines can theoretically transmit analog signals with bandwidths wider than the voice bandwidth of 4KHz. However, the higher the transmission speed, the shorter the distance that can be transmitted and the better the quality of the line. Accordingly, technologies of various transmission rates and transmission methods have been developed according to transmission distance and transmission rate application fields.

xDSL technology is a generic name for several types of DSL technology, including ADSL, SDSL, HDSL, RADSL, VDSL, and IDSL, and uses existing telephone lines for video on demand (VOD), high-speed Internet access, remote education, Provides high-speed multimedia services such as video phones.

A representative of these approaches is the Asymmetric Digital Subscriber Line (ADSL). This method uses existing telephone line two-wire telephone network to provide high speed downstream and low speed upstream data channels, and at the same time provide existing voice service.

4 is a block diagram of an Internet service system using a satellite according to an embodiment of the present invention when the subscriber network 40 is a B-WLL, and the relay server 20 and the set-top box 50 transmit and receive B-WLL wirelessly. Connected via device 460.

At this time, data transmission between the relay server 20 and the B-WLL radio transceiver 460 is performed wirelessly.

The WLL system is a system that provides voice, ISDN, fax, and data services by connecting a telephone company, a home, and an office wirelessly rather than by wire. Compared with the existing wired network, it can reduce the network construction cost, time, maintenance cost, etc., as well as improve the configuration and call quality of various subscriber networks, and thus, has been in the spotlight as a communication network technology to replace the existing wired network. The most advanced of these methods is the B-WLL.

B-WLL is a broadband fixed wireless communication network using uplink 24.25 ~ 24.75GHz and downlink 25.50 ~ 26.70GHz, which is the frequency for subscriber lines announced in the Ministry of Information and Communication Announcement No. 1997-49. Is available.

It is an outdoor wireless distribution system in which subscribers are located in a fixed location and can provide two-way high-speed multimedia services such as voice call, data communication, interactive video service, multimedia service combining voice / data / video, and line lease (dedicated line) service. Many scholars and researchers have come to the fore as a replacement technology for wired broadband access networks.

5 is a block diagram of a set-top box 50 of the Internet service system using a satellite according to an embodiment of the present invention.

As shown in FIG. 5, in the Internet service system using a satellite according to an embodiment of the present invention, the set-top box 50 that enables two-way data transmission between the relay server 20 and the user 60 includes a receiver 510. , A transmitter 520, a controller 530, a modulator 540, an input unit 550, an output unit 560, and a program memory unit 570.

Receiving unit 510 is a part for receiving a signal transmitted from each subscriber network 40, depending on the type of subscriber network 40, that is, coaxial cable network 410, xDSL 440, B-WLL (460), etc. Received in a different manner, these reception schemes include Orthogonal Frequency Division Multiplexing (OFDM), Quadrature Amplitude Modulation (QAM), Reed Solomon, Quadrature Phase Shift Keying (QPSK), and the like.

The controller 530 analyzes a signal received through the receiver 510 and executes and processes an appropriate program stored in the program memory unit 570, which is a memory part in which a predetermined program for processing various data is stored. .

The signals received through the receiver 510 are compressed by MPEG-2 compression technology or the like, and the signals which need to be restored are modulated by the modulator 540 and then the user 60's television through the output unit 560. Is transmitted to and output as audio and / or video.

The input unit 530 receives an input from the user 60 and transmits it to the control unit 530. The input unit 530 receives an input through a keyboard, a mouse, and a remote wireless device. At this time, the keyboard is used to receive the direct input of the user 60, the mouse is used as a tool for surfing the web or executing instructions on the television screen.

The transmitter 520 transmits the user 60 input through the input unit 530 to the subscriber network 40. At this time, the transmitter 520 uses a QPSK scheme for signal transmission.

When signals transmitted from the subscriber network 40 are converted into Ethernet signals and input to the set top box 50, the control unit 530 in the set top box 50 interprets these signals and is stored in the program memory unit 570. After executing a specific program, the program analyzes the received signal and shows it to the user 60 through the output unit 560 as a screen.

The user 60 may look at the screen displayed through the output unit 560 and search for desired information. When the user 60 does not have the desired information while viewing the screen, the user 60 may query the main server 10 through the input unit 530. You can do

At this time, the content to be queried is processed in a specific program selected by the controller 530, the result is converted back to the Ethernet signal from the transmitter 520 and transmitted to the subscriber network 40, the signal is satellite (S) Send to the main server 10 via.

As described above, various subscriber networks 40, such as coaxial cable network 410, xDSL 440, and B-WLL 460, and the user's 60's television are connected via the set-top box 50. As a result, the user 60 can use the Internet service using a satellite through his television.

6 is a block diagram of an internet service system using satellites according to a second embodiment of the present invention.

As shown in FIG. 6, in the Internet service system using the satellite according to the second embodiment of the present invention, unlike the embodiment of FIG. 1, Internet data information of the user transmitted from the relay server 20 to the main server 10 is shown. The request command signal is transmitted through a back-bone line 35 formed between the relay server 20 and the main server 10 and responds to a user request transmitted from the main server 10 to the relay server 20. According to the data information is formed through the satellite (S) by the satellite transmitter (31a) and the satellite receiver (32a).

Therefore, when a plurality of users 60 connected to the relay server 20 through the subscriber network 40 and the set top box 50 transmits the Internet data information request command signal through the television connected to the set top box 50, The relay server 20 transmits the user's Internet data information request command signal to the router 21, and the router 21 transmits the received data information request command signal through the satellite S in the embodiment of FIG. Unlike this, the transmission is performed through the backbone line 35.

As described above, since the Internet service system of the second embodiment differs only from the relay server 20 in the data transfer method from the relay server 20 to the main server 10, the description of the remaining parts is omitted.

On the other hand, in the Internet service system of the second embodiment of Figure 6 is shown in Figures 7, 8, and 9 are shown differently according to the case that the subscriber network 40 is a coaxial cable network, xDSL, B-WLL. .

Also in the Internet service system shown in Figs. 7, 8, and 9, the relay server 20 is connected to the main server 10 in comparison with the Internet service system shown in Figs. 2, 3, and 4 of the first embodiment. Since the data transmission method is the same except for the data transmission method, detailed description thereof will be omitted.

Although the present invention has been described with reference to the most practical and preferred embodiments, the present invention is not limited to the above disclosed embodiments, but also includes various modifications and equivalents within the scope of the following claims.

According to the present invention, by connecting a variety of subscriber networks and televisions that are easily available to users for two-way communication using a set-top box, users can use a high-speed satellite Internet service without purchasing a computer system.

Claims (10)

A main server providing shopping information, a chat service, a mail service, an information service including a network game, and various Internet services according to a user selection; A relay server connected to a plurality of users through a subscriber network, transmitting information request signals of each user to the main server, and transmitting information data transmitted from the main server to each user through the subscriber network; A satellite transceiver connected to the main server and the relay server, respectively, to transmit and receive data information signals between the main server and the relay server through bidirectional communication through satellites; And Set-top box connected to the subscriber network and the user to enable two-way communication Internet service system using a satellite comprising a. The method of claim 1, And the subscriber network is a coaxial cable network, and a cable modem is connected to enable a bidirectional data transmission between the coaxial cable network and the set-top box. The method of claim 1, The subscriber network is an xDSL (xDigital Subscriber Line), and an Internet service system using a satellite connected to the xDSL modem to enable bidirectional data transmission between the xDSL and the set-top box. The method of claim 1, An Internet service system using satellites, wherein the subscriber network is a broadband wireless subscriber network. The method according to any one of claims 1 to 4, The set top box A receiver which receives a signal transmitted from the subscriber network; A controller controlling the processing of the signal received through the receiver; A program memory unit for storing an application program for processing the received signal under control of the controller; A modulator for compressing and restoring the processed signal under the control of the controller; An output unit for transmitting a signal output through the modulator to a user under control of the controller; An input unit which receives an input from a user and transmits the input to the controller; And Transmitter for transmitting the signal processed by the controller to the subscriber network Internet service system using a satellite comprising a. A main server providing shopping information, a chat service, a mail service, an information service including a network game, and various Internet services according to a user selection; A relay server connected to a plurality of users through a subscriber network, transmitting information request signals of each user to the main server, and transmitting information data transmitted from the main server to each user through the subscriber network; A satellite transmitter connected to the main server to transmit data information signals from the main server to satellites; A satellite receiver connected to the relay server to receive a signal from the satellite; A backbone line connected between the relay server and the main server and transmitting a signal from the relay server to the main server; And Set-top box connected to the subscriber network and the user to enable two-way communication Internet service system using a satellite comprising a. The method of claim 6, And the subscriber network is a coaxial cable network, and a cable modem is connected to enable a bidirectional data transmission between the coaxial cable network and the set-top box. The method of claim 6, And a subscriber network is xDSL, and an xDSL modem is connected to enable bidirectional data transmission between the xDSL and the set-top box. The method of claim 6, An Internet service system using satellites, wherein the subscriber network is a broadband wireless subscriber network. The method according to any one of claims 6 to 9, The set top box A receiver which receives a signal transmitted from the subscriber network; A controller controlling the processing of the signal received through the receiver; A program memory unit for storing an application program for processing the received signal under control of the controller; A modulator for compressing and restoring the processed signal under the control of the controller; An output unit which transmits a signal output through the modulator to a user under control of the controller; An input unit which receives an input from a user and transmits the input to the controller; And Transmitter for transmitting the signal processed by the controller to the subscriber network Internet service system using a satellite comprising a.