KR19990084359A - Cable TV, PC and TV Internet and Multimedia Access System - Google Patents

Abstract

The present invention provides a PC and TV combined Internet access system that can be connected and communicated with both a PC and a TV in the Internet access using a cable TV network, and automatically detects a communication failure such as a signal intrusion on a cable TV line. By automatically transmitting / receiving the transceiver's transmit / receive frequency to the unobstructed frequency, it not only maintains the communication network without the communication obstacle, but also provides ON-DEMAND SERVICE such as VIDEO, AUDIO, NEWS-ON-DEMAND, TELEBANKING, TELESHOPPING, VIDEO GAME, etc. according to the user's choice. Provides PC, TV, Internet, and multimedia access terminal devices that can be provided by PC or TV.

Description

Cable TV, PC and TV Internet and Multimedia Access System

The present invention provides a PC and TV combined access system capable of internet communication and multimedia service using a PC or TV by connecting not only a PC but also a TV in the Internet and a multimedia connection using a cable TV network. If a communication failure occurs in the network, the transmitter automatically detects the frequency of the transceiver and transfers it to a frequency free of communication failure to maintain the communication network without the communication failure. On-demand services such as ON DEMAND and VIDEO GAME ON DEMAND are provided by PC or TV according to user's choice.

In the conventional Internet connection, a telephone line was used to connect a PC to communicate with the Internet, or connect a telephone line to a special TV developed for the Internet. In recent years, high speed cable modems have been developed to enable Internet access through cable TV networks. However, these high speed cable modems can only be connected to a PC or a special TV with built-in PC functions. There was a problem.

In general, the Internet using the telephone line has a problem that TCP / IF protocol, limited bandwidth, and limitation of transmission speed cannot generally accommodate multimedia data having a large amount of data.

In particular, many types of high-speed cable modems have been developed for internet access using cable TV networks. However, all of these cable modems are expensive and use one uplink and one downlink band. When the signal oscillation occurs, the entire communication network is paralyzed, and all the PCs connected to the same cable TV network are paralyzed.

In addition, the conventional Internet system has a problem that only the MPEG-I level of image quality can be realized due to the limitation of the transmission traffic and the available bandwidth in transmitting the multimedia data from the server to the user. Since the image quality can be improved to the MPEG-II level or higher, the present invention allows a user to selectively select a monitor means from a PC or a general home TV, as well as to provide a high-quality multimedia service with an Internet service. It is to provide a manufacturing technology of the terminal device.

The present invention is to solve the above problems in the Internet and multimedia access using a cable TV network, if a communication failure occurs due to signal intrusion or signal oscillation on the line, the network management control means of the central control computer automatically It provides technology that maintains perfect communication network by detecting and automatically transferring transmission / reception frequency to frequency without communication obstacles. Also, one connection terminal device can be connected to internet or multimedia through PC or general home TV according to user's choice. Provides a PC and TV-enabled HOME TERMINAL system, and also provides a multi-function multimedia service access system for both PC and TV that can provide high-quality multimedia services to the PC or TV at the same time as the user's choice. do.

1 is a system block diagram of the present invention

2 is a block diagram of a central control system for implementing the present invention.

3 is a modified application example of FIG.

4 is a network diagram of the present invention

<Description of Symbols for Main Parts of Drawings>

101: cable TV line 102: duplex filter

103: first multi-channel receiving means 104: receiving data address checking means

105: central control unit 106: compressed data storage means

107: TV interface means 108: TV receiver connection means

109: PC connection means 110: PC interface means

111: multichannel transmitting means 112: second multichannel receiving means

113: transmission and reception frequency conversion means 114: reception frequency conversion means

115: address storage means 116: display means

117: IF receiver 118: transmission data storage memory means

119 tuner 120 service selection means

121: printer connection means 122: radio wave detection means

202: duplex filter 201: cable TV line

203: first multichannel transmitting means 204: frequency changing means of the first transmitting means

205: second multichannel transmitting means 206: multichannel receiving means

207: frequency changing means 208: address designation means

209: IN-BAND data transmission means 210: central control processing unit

211: radio wave checking means 301: cable TV line

302: duplex filter 303: receiving means

304: transmitting means 305: central control processing means

306: input data storage means 307: IF receiving means

308: output data storage means 309: address designation means

310: TV interface means 311: PC interface means

312: printer means 313: display means

314: PC, TV selection means 401: central control computer

402: network management control means 403-1 to 403N: Internet access terminal

404: INTERNET SERVICE PROVIDER SYSTEM

405: ON-DEMAND SERVICE PROVIDER SYSTEM

Hereinafter, with reference to the accompanying drawings will be described the system configuration of the present invention and its effects and effects for achieving the above object.

1 is a block diagram of the Internet and multimedia access system configuration of the present invention,

2 is a block diagram of a central control system for implementing the present invention,

3 is a modified example of FIG. 1,

4 is a network configuration diagram of the present invention.

As shown in Fig. 1, the Internet access terminal of the present invention includes a cable TV line 101, a duplex filter 102, a first multichannel receiving means 103, and means for converting a frequency of the receiving means ( 114, the means 104 for checking the address of the received data and passing only the data of its own address, the second multi-channel receiving means 112, the multi-channel transmitting means 111 and the multi-channel transmitting / receiving means. Frequency converting means 113, tuner means 119, addressing means 115, transmission data storing and storing means 118, received compressed data storing means 106, and TV interface for converting frequency. Means (107), PC interface means (110), output selection means (120) for determining whether the user selects a TV or a PC, printer connection means (121), and TV connection means (108). PC connection means 109, IF receiving means 117, display means 116 and the above. It consists of the central processing control apparatus 105 which controls each means.

In addition, the central control system for implementing the present invention, as shown in Figures 2 and 4, the Internet SERVICE PROVIDER SYSTEM (404) which is a service data storage and transmission means to provide a cable TV network, and ON-DEMAND for multimedia The service provider system 405, the central control computer 401 of the additional communication service provider that provides the Internet service, and the network management control means 402, the central control computer 401 is the data of the transmission and reception means Grouping is usually divided into cells of 500 to 1000 subscriber units according to the processing speed, and network management control means 402 is provided for each cell, and the data transmission / reception function of each cell is managed through the network management control means for each cell. .

The network management control means 402 includes a first multichannel transmission means 203, a frequency conversion means 204 for changing the frequency of the first multichannel transmission means, a second multichannel transmission means 205, and A frequency converting means 207 for changing the frequency of the channel receiving means 206, the second multichannel transmitting means and the multichannel receiving means together, an address designating means 208 for specifying an address for each data, and IN- An in-band data transmission means 209 for transmitting BAND data, a radio wave confirmation means 211 for confirming RETURN DATA, and a central control processor 210 for controlling each of the above means.

FIG. 3 is a diagram illustrating a modified application system of the present invention in which the multichannel transmitting and receiving means and the transmitting and receiving frequency changing means are replaced with the short channel transmitting and receiving means in FIG. 1, and the duplex filter 302, the receiving means 303, and the transmitting means ( 304, Internet input data storage means 306, output data storage means 308, TV interface means 310 for restoring the stored compressed data, modulating and signal processing to conform to the TV system, and stored compression PC interface means 311, display means 313, addressing means 309, printer means 312, display means 313, and remote control control signal data for interfacing data to a PC. IF means 307 for receiving the signal, PC TV selection means 314 and the central control unit 305 for central control of each means of the above system, in this case replace the transmission and reception means with a conventional high-speed cable modem Could The.

Referring to the operation and effects of the present invention configured as described above are as follows.

First, when the user selects the PC connection as the output selection means 120, the cable TV line 101 flows into the cable TV line 101 from the central control computer 401 and the network management control means 402 for each cell through the cable TV line 101. The Internet data to be input is stored in the received data storage means 106 under the control of the central control processing unit 105 via the duplex filter 102, the multi-channel receiving means 103, and the address checking means 104, It is input to the PC via the PC interface means 110 and the PC connection means 109.

Data transmitted from the PC to the Internet system is controlled by the central control processing unit 105 via the PC connection means 109, the transmission data storage means 106, and the multi-channel transmission means 111, and the network management control means ( It is input to the central control computer 401 through the multi-channel receiving means 206 of 402, and is transmitted to the internet system 404 under the control of the central control computer. On the other hand, when the user selects the TV connection as the output selection means 120, Internet data drawn from the central control computer 401 and the network management control means 402 connected to the cable TV network to the cable TV line 101. Is input to the received data storage means 106 under the control of the central control processing unit 105 via the duplex filter 102, the multi-channel receiving means 103 and the address confirming means 104, and the TV interface means ( Internet data compressed at 107 is restored to real time data and modulated into an input signal suitable for TV reception (in the case of an analog TV receiver, the digital data is modulated into analog data) and transmitted to a TV receiver.

In addition, in order to transmit data to the Internet system by a user connected to the Internet through a TV receiver, the user inputs data using a remote controller and transmits the data to the central control unit 105 via the IF receiving unit 117. The data is stored in the transmission data storage means 116, and when the network management control means 402 of the central control computer 401 sequentially calls, the stored data is transmitted to the central control computer, and the central control computer 401 This data will be transferred to the Internet system.

At this time, if a communication failure occurs due to signal intrusion or the like on the cable TV line, since the terminal does not respond to the commands sequentially called by the network management control means 402, the network management control means 402 programmed a predetermined number of times. If there is no response even when the call is sequentially made, the network management control means 402 considers that a communication failure has occurred in the line, and transmits / receives frequency change data to the frequency conversion means 113 to the IN-BAND through the IN-BAND transmission means 209. Under the control of the frequency converting means 113, the transmit / receive frequencies of the multichannel receiver 112 of the terminal, the multichannel receiver 111, and the transceivers 205 and 206 of the transceiver of the network management apparatus 402 are automatically It automatically changes to the preliminary preliminary transmit / receive frequency, and if the transmit / receive is not possible even with the changed preliminary frequency, the preliminary change is automatically made to the preliminary 2nd and 3rd preliminary frequencies. It is that control area network is restored.

In addition, the Internet data transmitted from the Internet system to the subscriber access means is transmitted to the CATV line through the network management control means 402 by designating an address for each compressed data to be transmitted by the central control computer 401. The address confirming means 104 receives only the compressed data of its own address among the compressed data floating on the communication BUS and transfers it to the receiving data storing means 106 via the central control processing means 105. When a communication failure occurs due to a signal intrusion or the like and the data transmitted from the Internet system cannot reach the subscriber access means (terminal), the radio wave detection means 122 in the terminal detects this and multi-channel transmission means 111 The central control unit 105 is informed via the multi-channel transmission means 111. When notifying the network management granting means 402, the central control processing unit 210 of the network management controlling means changes the transmission frequency of the first multi-channel transmitting means 203 to a preliminary input reserved frequency and simultaneously performs IN-BAND. Through the data transmission means 209, the frequency of the multi-channel receiving means 103 of each subscriber access terminal as the IN-BAND data signal through the central control processing unit 105 of each subscriber access terminal as the preliminary frequency inputted in advance. It is to restore the communication network by changing, and if the communication network is not recovered even with the changed reserve frequency, it automatically recovers to the secondary and tertiary reserve frequencies.

The preliminary transmit / receive frequency to be used for frequency conversion is pre-determined for each cell and programmed in the network management control means 202. The allocation of the transmit / receive frequency and the preliminary frequency differently for each cell causes only a cell of the corresponding frequency to cause a communication failure. Since it does not affect other cells, it does not affect the data communication of the entire CATV network. As the communication failure problem is solved as described above, a DMA control unit may be added to each central control unit in order to increase the data transmission speed, and an uplink data may be operated in an interrupt manner.

In addition, in the system of the present invention as shown in FIG. 4, when the ON-DEMAND system 405 such as a VOD is connected to the central control computer 401, compressed data for ON-DEMAND is selected according to the subscriber's choice. Since it is transmitted to and stored in the compressed data storage means 106 of the device, the subscriber can watch the VOD program on a PC or a TV, and depending on the type of compressed data of the server, in addition to the ON-DEMAND service, the remote TELESHOPPING or HOME Various multimedia services such as BANKING or remote career service will be provided.

As described above, the present invention provides a system capable of connecting the Internet not only to a PC but also to a general TV in the Internet connection using a cable TV network, and, when a communication failure occurs on a cable TV line, Its frequency is automatically transferred to maintain the perfect internet communication network without any communication obstacles. In addition, high-speed high-speed Internet service, high-quality VOD service, AOD service, NOD service, video game service, and home shopping are all managed by one access terminal device. The present invention solves all three problems in the multimedia industry (TV-PC, communication, and high-speed multimedia) with one device. It is a useful invention.

Claims (6)

In a system for connecting the Internet and the multimedia over a cable TV network, (a) a duplex filter for filtering signal data received on a cable TV line; (b) a first multi-channel receiver for receiving the filtered signal; (c) frequency converting means for changing a frequency of said first multichannel receiver; (d) a second multi-channel receiver for receiving the filtered signal; (e) a multichannel transmitter for transmitting data to be transmitted; (f) frequency converting means for simultaneously changing frequencies of the second multichannel receiver and the transmitter; (g) receiving data storage means for storing the received compressed data; (h) transmission data storage means for storing data to be transmitted; (i) radio wave sensing means for sensing the presence or absence of addressed received radio waves; (j) address verification means for identifying an address among data transmitted and selecting only data of its own address; (k) a TV interface means, provided with a printer connection terminal and a TV connection terminal, for restoring compressed data stored in the reception data storage means, demodulating the signal into a signal suitable for a TV system, and processing the signal to interface with the TV for viewing; (1) PC interface means for installing a PC connection terminal and interfacing the compressed data stored in the reception data storage means to the PC; (m) addressing means for the system; (n) a TV in which the user selects an output means. PC selection means; (o) display means for displaying the output, type of service, and the like; (p) IF means for controlling the function of the terminal and receiving remote control data for selecting a type of service; (q) Internet and multimedia access system for both PC and TV, comprising a central control unit for centrally controlling the above means. The method according to claim 1, A PC and TV-compatible internet and multimedia access system, wherein the second multi-channel receiving means is removed to control the transmission traffic of the transmitted / received data as the invented data or to transmit the data by the interrupt method. The method according to claim 1 and 2, Internet and multimedia access system for both PC and TV characterized by adding DMA controller to central control unit A subscriber station system for connecting the Internet and multimedia, comprising: a cable TV line; Cable communication modem means composed of a transmitting means and a receiving means; Received data storage means for storing the received compressed data; Means for storing transmission data for transmission; Interface means for signal-processing the received data received and interfacing to a PC; Interface means for reconstructing, storing and compressing the stored compressed data to interface with the TV; A remote control receiver for system control; Display means; PC, TV output selection means, addressing means and central control processing means for controlling the above means The method according to claim 4, A subscriber terminal device for a PC, a TV and multimedia, and an Internet connection, comprising a cable TV line as a telephone line, and a transmitting means and a receiving means as data transmission / reception modem means for a telephone line. The method according to claim 4 and 5, Subscriber terminal device characterized in that the transmission and reception modem is composed of one transmitting means and two or more receiving means