Patent Publication Number: US-2003226149-A1

Title: Integrated home network system for providing multimedia services and integrated terminal device for the integrated home network system

Description:
CLAIM OF PRIORITY  
       [0001] This application makes reference to, incorporates the same herein, and claims all benefits accruing under 35 U.S.C. §119 from my application INTEGRATED HOME NETWORK SYSTEM FOR MULTIMEDIA SERVICE AND INTEGRATED TERMINAL THEREFOR filed with the Korean Industrial Property Office on May 31, 2002 and there duly assigned Serial No. 30733/2002.  
       BACKGROUND OF THE INVENTION  
       [0002] 1. Technical Field  
       [0003] The present invention relates to an integrated home network, and more particularly to an integrated home network system for providing multimedia services to a subscriber and a terminal device for the integrated home network system.  
       [0004] 2. Related Art  
       [0005] Generally, various devices such as information devices (e.g., personal computer (PC)), communication devices (e.g., telephone), broadcasting devices (e.g., television set), audio and video (AV) devices (e.g., digital video disc (DVD) player and digital camera), home appliances, etc. are used at home. Home networking, a technique to connect these devices with one another to form a network and to have this network interact with various external networks so as to enable a user to conveniently use it, has been suggested in various forms, but it is expected that the respective home network forms will be slowly introduced by their necessities.  
       [0006] As examples of receiving high definition television (HDTV) broadcast at home, a method using ground wave, a method using cable television (CATV), a method using satellite broadcast, etc., may be included. To view HDTV broadcast by means of these methods, a separate set-top box (STB) is required. In the case of the method using ground wave, the blanket area is wider than in the case of analog broadcast. The method using CATV or satellite broadcast involves high cost, and in particular, in the case of the method using satellite broadcast, environment acts as an important factor. On the other hand, in order to use the Internet, a particular modem such as an asymmetric digital subscriber line (ADSL) modulator-demodulator (modem), a cable modem, a modem for public switched telephone network (PSTN), etc. must be additionally installed. Thus, a user must install various apparatuses to view HDTV broadcast at home and to use the Internet. Likewise, other multimedia services such as high definition television video on demand (HDTV VOD) services have the same problems as described above. In addition, in order to control home appliances, a separate home automatic system must be installed as well.  
       [0007] To connect various devices used in a home to a satellite broadcast receiving antenna, a cable television (CATV) network, a public switched telephone network (PSTN), an asymmetric digital subscriber line (ADSL), etc., various kinds of lines are introduced into the home. In addition, to link these lines to various devices, a number of taps are necessary. Furthermore, to connect the devices with one another, a complex wiring system of lines is necessary. For these reasons, network management is difficult, enormous maintenance cost is incurred, and new service cannot be easily accommodated.  
       SUMMARY OF THE INVENTION  
       [0008] Therefore, it is an object of the present invention to provide an integrated home network system for providing multimedia services which enables each subscriber to use various multimedia services by connecting one external line to only one terminal device, and to provide an integrated terminal device for the integrated home network system.  
       [0009] It is another object of the present invention to provide an integrated home network system for providing multimedia services which enables each subscriber to view high definition television (HDTV) broadcast and to use high-speed Internet by connecting one external line to only one terminal device, and to provide an integrated terminal device for the integrated home network system.  
       [0010] It is another object of the present invention to provide an integrated home network system for providing multimedia services which enables each subscriber to either view a high definition television (HDTV) broadcast or use a video on demand (VOD) service, and to use high-speed Internet by connecting one external line to only one terminal device, and to provide an integrated terminal device for the integrated home network system.  
       [0011] It is yet another object of the present invention to provide an integrated home network system for providing multimedia services which enables each subscriber to either view a high definition television (HDTV) broadcast or use a video on demand (VOD) service, to use high-speed Internet, and to remotely control home appliances by connecting one external line to only one terminal device, and to provide an integrated terminal device for the integrated home network system.  
       [0012] In accordance with the present invention, the above and other objects can be accomplished by the provision of an integrated home network system for providing multimedia services, comprising: a service providing system for providing a high definition television (HDTV) broadcast, a video on demand (VOD) service and an Internet access service to subscribers of the home network; a plurality of integrated terminal devices corresponding to the respective subscribers of the network, the integrated terminal devices providing Internet access to the respective subscribers through subscriber lines, receiving HDTV broadcast or VOD contents through the subscriber lines, and providing the HDTV broadcast or VOD contents to an HDTV for each subscriber; and an access network connected between the service providing system and the integrated terminal devices, the access network providing a communication path between the service providing system and the integrated terminal devices so that the subscribers can receive the HDTV broadcast or VOD contents through the subscriber lines and have access to the Internet.  
       [0013] Preferably, the service providing system may include: a video on demand (VOD) server for storing the VOD contents and outputting a moving picture expert group transport stream (MPEG TS) of the VOD contents in response to a VOD service request from each of the integrated terminal devices; a high definition television (HDTV) broadcast encoding device for receiving an HDTV broadcast signal, and converting the HDTV broadcast signal into the MPEG TS; and a remote access server (RAS) for connecting a corresponding integrated terminal device to the Internet in response to the VOD service request from the corresponding integrated terminal device.  
       [0014] In accordance with one aspect of the present invention, the above and other objects can be accomplished by the provision of an integrated terminal device for an integrated home network system for providing multimedia services, the integrated home network system including a service providing system for providing a high definition television (HDTV) broadcast, video on demand (VOD) service and Internet access service to subscribers of the home network and a plurality of integrated terminal devices corresponding to the respective subscribers of the network, the integrated terminal devices being connected to a very-high-data-rate digital subscriber line (VDSL), the integrated terminal device comprising: at least one interface section selected from an Ethernet interface section connected to a personal computer (PC) through an Ethernet, a home phone line networking alliance (HPNA) interface section connected to a device having another HPNA interface section through a subscriber&#39;s telephone line, and a wireless local area network (WLAN) interface section connected by wireless to a device having another WLAN interface section; a VDSL interface section for demodulating a VDSL frame received through the VDSL, converting the demodulated VDSL frame into an asynchronous transfer mode (ATM) cell, modulating the ATM cell, to be transmitted to the VDSL, into the VDSL frame and transmitting the modulated VDSL frame to the VDSL; a moving picture expert group transport stream (MPEG TS) section for converting the ATM cell associated with a moving picture expert group transport stream (MPEG TS) of HDTV broadcast or VOD contents received through the VDSL interface section into the MPEG TS; an MPEG-2 decoder for decoding audio and video data from the MPEG TS; an HDTV encoder connected to an HDTV, the HDTV encoder encoding the audio and video data decoded by the MPEG-2 decoder into an HDTV signal and transmitting the HDTV signal to the HDTV; a microprocessor unit for converting an internet protocol (IP) packet, to be transmitted from each Ethernet interface section, the HPNA interface section and the WLAN interface section to the Internet, into the ATM cell to transmit the ATM cell to the VDSL interface section, converting the ATM cell received from the VDSL interface section into the Internet protocol packet to transmit the Internet protocol packet to one of the Ethernet interface section, the home phone line networking alliance (HPNA) interface section and the wireless local area network (WLAN) interface section, and operating the moving picture expert group transport stream (MPEG TS) section in response to the ATM cell; and a memory for storing operation programs and data of the microprocessor unit.  
       [0015] Preferably, the integrated terminal device may comprise: a remote controller for generating an infrared signal of an high definition television (HDTV) control command to control the HDTV; and an infrared receiver for receiving the infrared signal from the remote controller and outputting the HDTV control command; the microprocessor unit controlling the moving picture expert group (MPEG) decoder in response to the HDTV control command received from the infrared receiver.  
       [0016] The integrated terminal device may further comprise: a power line communication (PLC) controller connected to a home appliance having the PLC controller through a subscriber home power line; and a remote controller for generating an infrared signal of a home appliance control command to control the home appliance; the microprocessor unit converting the Internet protocol packet, to be transmitted from the PLC controller to the Internet, into the ATM cell to transmit the asynchronous transfer mode (ATM) cell to the very-high-data-rate digital subscriber line (VDSL) interface section, converting the ATM cell received from the VDSL interface section into the Internet protocol packet to transmit the Internet protocol packet to the PLC controller of the home appliance, and transmitting the home appliance control command received from an infrared receiver to the home appliance through the PLC controller.  
       [0017] The integrated terminal device may further comprise: a remote controller for generating an infrared signal of an Internet access control command to control the Internet; and an infrared receiver for receiving the infrared signal from the remote controller and outputting the Internet access control command; the microprocessor unit having a Web browser, driving the Web browser in response to the Internet access control command received from the infrared receiver, converting the internet protocol (IP) packet, to be transmitted to the Internet, into the asynchronous transfer mode (ATM) cell to transmit the ATM cell to the very-high-data-rate digital subscriber line (VDSL) interface section, and graphically decoding data included in the ATM cell received from the VDSL interface section using the MPEG-2 decoder to transmit the decoded data to the high definition television (HDTV) encoder.  
       [0018] The integrated terminal device may further comprise an Institute of Electrical and Electronics Engineers (IEEE) standard 1394 interface section for converting the moving picture expert group transport stream (MPEG TS) into an IEEE standard 1394 format, and transmitting the MPEG TS having the IEEE standard 1394 format to an IEEE standard 1394 cable. A simplified integrated device may be connected to the IEEE standard 1394 cable.  
       [0019] The simplified integrated device may include: an IEEE standard 1394 interface section connected to the IEEE standard 1394 cable and providing an IEEE standard 1394 interface; an MPEG-2 decoder for decoding audio and video data from a moving picture expert group transport stream (MPEG TS) received from the IEEE standard 1394 interface section; a high definition television (HDTV) encoder connected to an HDTV, the HDTV encoder encoding the audio and video data decoded by the MPEG-2 decoder into an HDTV signal to transmit the HDTV signal to the HDTV; a microprocessor unit for controlling the MPEG-2 decoder in response to the moving picture expert group transport stream (MPEG TS) from the IEEE standard 1394 interface section; and a memory for storing operation programs and data of the microprocessor unit. 
     
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
     [0020] A more complete appreciation of the invention, and many of the attendant advantages thereof, will be readily apparent as the same becomes better understood by reference to the following detailed description when considered in conjunction with the accompanying drawings, in which like reference numerals indicate the same or similar components, and wherein:  
     [0021]FIG. 1 is a block diagram showing the construction of an integrated home network system for providing multimedia services according to the preferred embodiment of the present invention;  
     [0022]FIG. 2 is a block diagram showing the construction of the integrated terminal device shown in FIG. 1;  
     [0023]FIG. 3 is a block diagram showing the construction of a simplified integrated device according to the preferred embodiment of the present invention;  
     [0024]FIG. 4 is a diagram showing a protocol stack of an integrated home network system for providing multimedia services according to the preferred embodiment of the present invention; and  
     [0025]FIG. 5 is a diagram showing a task flow of a microprocessor unit shown in FIG. 2 according to the preferred embodiment of the present invention. 
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS  
     [0026] Hereinafter, the preferred embodiments of the present invention will be explained in more detail with reference to the accompanying drawings. In the following description, well known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.  
     [0027]FIG. 1 is a block diagram showing the construction of an integrated home network system for providing multimedia services according to the preferred embodiment of the present invention. Referring to FIG. 1, an integrated home network system for providing multimedia services according to the present invention comprises a service providing system  100 , an access network  102 , and a plurality of integrated terminal devices  200  installed in each subscriber&#39;s home  104 . Indeed, a number of home network subscribers may connect to the service providing system  100  through the access network  102 , but for the sake of convenience, one subscriber&#39;s home  104  and one integrated terminal device  200  installed in the subscriber&#39;s home  104  are shown in FIG. 1.  
     [0028] The service providing system  100  includes a high definition television (HDTV) broadcast encoding device  108 , a video on demand (VOD) server  110  and a remote access server (RAS)  112 . The service providing system  100  provides an HDTV broadcast, a VOD service and an Internet access service to the home network subscribers. The HDTV broadcast encoding device  108  receives a ground wave HDTV broadcast signal or a cable HTDV broadcast signal, converts the received signal into a moving picture expert group transport stream (MPEG TS), and outputs the MPEG TS. The VOD server  110  stores HDTV VOD contents, and outputs an MPEG TS of the VOD contents in response to a VOD service request from the integrated terminal device  200 . The RAS  112  is commonly called a “remote access server”. The RAS  112  provides Internet protocol address assignation and certification services for connecting a corresponding integrated terminal device in response to an Internet access request from the integrated terminal device  200 .  
     [0029] The integrated terminal device  200  installed in the subscriber&#39;s home  104  corresponds to the respective home network subscribers. The integrated terminal device  200  is connected to the access network  102  through a very-high-data-rate digital subscriber line (VDSL)  120 , and is connected to the service providing system  100  through the access network  102  so that Internet access is provided to each subscriber through the VDSL, and high definition television (HDTV) broadcast or video on demand (VOD) contents received through the VDSL  120  are provided to an HDTV  212  installed in the subscriber&#39;s home  104 . The integrated terminal device  200  includes a wireless local area network (WLAN) interface section  204 , a home phone line networking alliance (HPNA) interface section  206 , a power line communication (PLC) controller section  208  and an IEEE standard 1394 interface section  210 . The integrated terminal device  200  is connected to a plurality of devices  214 , including the respective WLAN interface sections, via a WLAN. The integrated terminal device  200  is connected to a plurality of devices  216 , including the respective HPNA interface sections, via a telephone line  216  in the subscriber&#39;s home  104 . The integrated terminal device  200  is connected to a plurality of home appliances  222 , including the respective PLC controllers, via a power line  220  in the subscriber&#39;s home  104 . As shown in FIG. 1, the integrated terminal device  200  is connected to a plurality of HDTVs  226  having a simplified integrated device, which includes an IEEE standard 1394 interface section. In FIG. 1, the WLAN interface section  204 , HPNA interface section  206 , PLC controller  208  and IEEE 1394 interface section  210  are simplified as “WLAN”, “HPNA”, “PLC” and “IEEE 1394”, respectively. A personal computer is exemplified as the devices  214  and  216  including the respective WLAN interface section and HPNA interface section. As home appliances  222 , there may be included, for example, gas sensors for detecting gas leakage, gas valves for block gas supply, etc., in the subscriber&#39;s home  104 .  
     [0030] The access network  102  is arranged between the service providing system  100  and the integrated terminal device  200 . The access network  102  is connected to the service providing system  100  through an optical line, and is connected to the integrated terminal device  200  through the very-high-data-rate digital subscriber line (VDSL)  120 . The access network  102  provides a communication path between the service providing system  100  and the integrated terminal device  200  so that the subscribers can receive the high definition television (HDTV) broadcast and video on demand (VOD) contents through the VDSL  120  and have access to the Internet. The access network  102 , an example of use of an asynchronous transfer mode-passive optical network (ATM-PON), includes an asynchronous transfer mode (ATM) switch  114 , a plurality of optical line terminals (OLTs)  116  as optical subscriber units, and a plurality of optical network units (ONUs)  118 . The optical network units  118  are connected to the optical line terminals  116  through the respective optical lines, and are connected to the integrated terminal device  200  through the VDSL  120  to provide an interface between the optical line and the VDSL  120 . The optical line terminals  116  are connected to the ATM switch  114  and the optical network units  118 , respectively, by the respective optical lines. The optical line terminals  116  multiplex upstream signals to be transmitted from the integrated terminal device  200  to the service providing system  100  through the optical network units  118 , and demultiplex downstream signals to be transmitted from the service providing system  100  to the integrated terminal device  200  through the optical network units  118 . The ATM switch  114  is connected to the HDTV broadcast encoding device  108 , the VOD server  110 , the remote access server (RAS)  112 , and the optical line terminal  116  through the optical lines, transmits the MPEG TS of the HDTV broadcasts and VOD contents to the integrated terminal device  200  through the optical line terminal  116 , and provides communication between the corresponding integrated terminal device  200  and the RAS  112  in response to the Internet access of the corresponding integrated terminal device  200 .  
     [0031] When the subscriber&#39;s home  104  is a private home, the optical network units (ONUs)  118  are apart from the subscriber&#39;s home  104 . When the subscriber&#39;s home  104  is a hospital, hotel, company, television station, etc., the optical network units  118  are located within the subscriber&#39;s home  104 . The distance between the optical line terminals (OLTs)  116  and the optical network units  118 , for example, can be some kilometers long via a 2.5 Gbps optical line. The distance between the optical network units  118  and the integrated terminal device  200 , for example, can be 300 m apart through the VDSL  120  having a data rate of 36 Mbps downstream and 3.6 Mbps upstream.  
     [0032]FIG. 2 is a block diagram showing the construction of the integrated terminal device  200 . Referring to FIG. 2, the very-high-data-rate digital subscriber line (VDSL)  120  is connected to a VDSL interface section  202  including a universal test &amp; operations PHY interface for ATM (UTOPIA) interface section  250 , a VDSL processing section  252  and a line interface section  254 . The VDSL interface section  202  demodulates a VDSL frame received through the VDSL  120 , converts the modulated VDSL frame into an asynchronous transfer mode (ATM) cell, and outputs the ATM cell to a UTOPIA bus  256  connected to a microprocessor unit  228  and a moving picture expert group-transport stream (MPEG TS) section  234 . Since the ATM cell simultaneously transmitted to the microprocessor unit  228  and the MPEG-TS section  234  can extract different data by virtual path identifier (VPI) value and virtual channel identifier (VCI) value, respectively, the ATM cell associated with Internet protocol can be processed in the microprocessor unit  228  and the ATM cell associated with HDTV broadcast or VOD contents can be processed, under the control of the microprocessor unit  228 , in the MPEG-TS section  234 . At this time, the ATM cell inputted to the microprocessor unit  228  is converted into an Internet protocol packet within the microprocessor unit  228 , and the Internet protocol packet is transmitted to a corresponding device among devices connected to an Ethernet interface section  244 , a WLAN interface section  204 , a home phone line networking alliance (HPNA) interface section  206 , a PLC controller  208 , and an IEEE standard 1394 interface section  210 . The VDSL interface section  202  also modulates the ATM cell to be transmitted to the VDSL  120  into a VDSL frame and transmits the VDSL frame to the VDSL  120 . Accordingly, user data inputted to the microprocessor unit  228  are converted into an ATM cell and transmitted to the UTOPIA interface section  250  of the VDSL interface section  202 . The transmitted ATM cell is processed into a VDSL frame in the VDSL processing section  252 , subjected to quadrature-amplitude modulation (QAM), and transmitted to the VDSL  120  via analog front-ending through the line interface (AFE) section  254 .  
     [0033] The moving picture expert group transport stream (MPEG TS) section  234  connected to the universal test &amp; operations PHY interface for ATM (UTOPIA) bus  256  converts the asynchronous transfer mode (ATM) cell associated with the MPEG TS according to high definition television (HDTV) broadcast or video on demand (VOD) contents received through the very-high-data-rate digital subscriber line (VDSL) interface section  202  into an MPEG TS, and outputs the MPEG TS to an MPEG-2 decoder  236 . The MPEG-2 decoder  236  searches for a channel or video identifier (ID) and audio identifier (which correspond to VOD contents) selected by the subscriber using a remote controller  246  by inputting the MPEG TS, decodes video data and audio data from the MPEG TS, and outputs the decoded video data and audio data to an HDTV encoder  238 . The HDTV encoder  238  connected to the HDTV  212  encodes the audio data and video data decoded by the MPEG-2 decoder  236  into an HDTV signal, and transmits the HDTV signal to the HDTV  212 . Accordingly, the subscriber can view HDTV broadcast or VOD contents received from the service providing system  100  through the access network  102  and the VDSL  120 .  
     [0034] The microprocessor unit  228  is connected to a display unit  240 , a serial interface section  242 , the Ethernet interface section  244  and an infrared receiver  248 , in addition to the universal test &amp; operations PHY interface for ATM (UTOPIA) bus  256 . The microprocessor unit  228  is also connected to the wireless local area network (WLAN) interface section  204 , the home phone line networking alliance (HPNA) interface section  206 , the power line communication (PLC) controller  208 , a memory  232  and the IEEE standard 1394 interface section  210  through a system bus  230 , and is also connected to the moving picture expert group transport stream (MPEG TS) section  234  and the MPEG-2 decoder  236 . The memory  232  stores operation programs and data of the microprocessor unit  228 . The microprocessor unit  228  is a microprocessor unit having a PHY/MAC (physical layer device/media access control), and the Ethernet interface section  244  is connected to a PHY/MAC port of the microprocessor unit  228 . The microprocessor unit  228  converts an Internet protocol packet, for transmission from each of the Ethernet interface section  244 , the WLAN interface section  204 , the HPNA interface section  206 , the PLC controller  208  and the IEEE standard 1394 interface section  210  to the Internet  106 , into an ATM cell so as to transmit the ATM cell to the very-high-data-rate digital subscriber line (VDSL) interface section  202 , and converts the ATM cell associated with the Internet protocol received through the VDSL interface section  202  into an Internet protocol packet for transmission to one of the Ethernet interface section  244 , the WLAN interface section  204 , the HPNA interface section  206 , the PLC controller  208  and the IEEE standard 1394 interface section  210 . Accordingly, a personal computer (PC) connected to the Ethernet interface section  244 , the PCs  214  including WLAN interface section  204 , the PCs  216  including HPNA interface section  206 , or a personal computer connected to the IEEE standard 1394 cable  224  can have access to the Internet  106 . The subscriber connects to the VOD server  110  through the Internet  106  and requests VOD service to receive VOD contents through the access network  102  and the VDSL  120 . In the WLAN interface section  204 , Internet protocol data transmitted by the microprocessor unit  228  are modulated so as to conform to an 802.11 B form, and the modulated data are transmitted to the subscriber&#39;s home  104  through the WLAN. The HPNA interface section  206  encapsulates the Internet protocol data transmitted by the microprocessor unit  228 , converts the encapsulated data into a phone line networking alliance (PNA) form, and transmits the form to the subscriber&#39;s home  104  through the telephone line  216 . In addition, the home appliances  222  can be remotely controlled via the Internet  106 . At this time, the power line communication (PLC) controller  208  modulates the Internet protocol data transmitted by the microprocessor unit  228  so as to conform to the Lonworks standard, and transmits the modulated data to the power line to control the home appliances  222 .  
     [0035] The microprocessor unit  228  operates the moving picture expert group transport stream (MPEG TS) section  234  in response to the asynchronous transfer mode (ATM) cell associated with the MPEG TS according to high definition television (HDTV) broadcast or video on demand (VOD) contents through the VDSL interface section  202 . In addition, since the microprocessor unit  228  is connected to the display unit  240 , such as a light emitting diode (LED) or liquid crystal display (LCD), the microprocessor unit  228  can display the current state of the integrated terminal device  200 . Furthermore, since the microprocessor unit  228  is connected to the serial interface section  242 , such as an RS-232C or a universal serial bus (USB), the subscriber can monitor and change the current state of the integrated terminal device  200  through the serial interface section  242 .  
     [0036] On the other hand, the remote controller  246  is used when the subscriber wants to control the high definition television (HDTV)  212  or the home appliances  222 , and to have access to the Internet  106  without using personal computer while watching the HDTV  212 . The remote controller  246  includes buttons to input HDTV control commands for controlling the HDTV  212 , home appliance control commands for controlling the home appliances  222 , and Internet access control commands. The remote controller  246  generates an infrared signal corresponding to the commands in accordance with the subscriber&#39;s operation. The HDTV control commands include commands to select channels of the HDTV  212 , commands to control volume, etc., while the home appliance control commands include commands to open or close gas valve, etc., and the Internet access commands include commands to drive the web browser mounted on the microprocessor unit  228 . The microprocessor unit  228  receives these control commands from the infrared receiver  248 , controls the moving picture expert group (MPEG) decoder  236  to select channels and to control volume, and transmits the home appliance control commands to corresponding home appliances through the power line communication (PLC) controller  208 . The microprocessor unit  228  drives the web browser in response to the Internet access control commands, converts an Internet protocol packet to be transmitted to the Internet  106  into an asynchronous transfer mode (ATM) cell, transmits the converted ATM cell through the very-high-data-rate digital subscriber line (VDSL) interface section  202 , and graphically decodes the data according to the ATM cell associated with Internet protocol using the MPEG-2 decoder  236  so as to transmit the decoded data to the HDTV encoder  238 . Accordingly, the subscriber can have access to the Internet  106  while watching the HDTV  212 .  
     [0037] The IEEE standard 1394 interface section  210  converts the moving picture expert group transport stream (MPEG TS) converted by the MPEG-TS section  234  into an IEEE standard 1394 format, and outputs it to the IEEE standard 1394 cable  224 . A plurality of high definition televisions (HDTVs)  226  connected to the IEEE standard 1394 cable  224  include a simplified integrated device so by means of which the subscriber can view HDTV broadcast. The simplified integrated device is a device by means of which the subscriber can view HDTV broadcast with high definition by decoding the MPEG TS outputted from the MPEG-TS section  234 .  
     [0038] As shown in FIG. 3, the simplified integrated device includes a microprocessor unit  300 , a memory  302 , an IEEE standard 1394 interface section  304 , an MPEG-2 decoder  306 , a high definition television (HDTV) encoder  308  and an Ethernet interface section  310 . The IEEE standard 1394 interface section  304  is connected to the IEEE standard 1394 cable  224  so as to provide an IEEE standard 1394 interface. The MPEG-2 decoder  306  decodes audio data and video data from a moving picture expert group transport stream (MPEG TS) received from the IEEE standard 1394 interface section  304 , and outputs the decoded data to the HDTV encoder  308 . The HDTV encoder  308  is connected to the HDTV  226 , and encodes audio data and video data decoded by the MPEG — 2 decoder  306  to form an HDTV signal for transmission to the HDTV  226 . The microprocessor unit  228  controls the MPEG-TS decoder  306  in response to the receipt of the MPEG TS through IEEE standard 1394 interface section  304 . The memory  302  stores operation programs and data of the microprocessor unit  300 . Accordingly, the subscriber can view an HDTV broadcast or video on demand (VOD) contents through other HDTVs  226  connected to the IEEE standard 1394 cable  224 , as well as through the HDTV  212  connected directly to the integrated terminal device  212 . Since the simplified integrated device includes the Ethernet interface section  310  connected to the microprocessor unit  300 , a personal computer can be connected to the Ethernet interface section  310 .  
     [0039]FIG. 4 is a diagram showing a protocol stack of the integrated home network system for providing multimedia services according to the preferred embodiment of the present invention. Referring to FIG. 4, the protocol stack receives and transmits data between the service providing system  100  and the integrated terminal device  200 . Reference numeral  400  represents the protocol stack of the remote access server (RAS)  112 , reference numeral  402  represents the protocol stack of the high definition television (HDTV) broadcast encoding device  108 , reference numeral  404  represents the protocol stack of the video on demand (VOD) server  110 , reference numeral  406  represents the protocol stack of the asynchronous transfer mode (ATM) switch  114 , reference numeral  408  represents the protocol stack of the optical network unit (ONU)  118 , and reference numeral  410  represents the protocol stack of the integrated terminal device  200 .  
     [0040] A very-high-data-rate digital subscriber line (VDSL) stack and an asynchronous transfer mode (ATM) stack are processed in the VDSL interface section  202  of the integrated terminal device  200 , while an ATM adaptation layer (AAL)  5  stack, an Ethernet MAC stack, a point-to-point protocol over Ethernet (PPPoE) client stack, a point-to-point protocol (PPP) stack, an Internet protocol stack, a transmission control protocol (TCP) stack and an application program stack are processed in the microprocessor unit  228  of the integrated terminal device  200 . The optical network unit (ONU)  118  interlocks with the integrated terminal device  200  to process the VDSL stack and the ATM stack, and connects to the RAS  112  with the ATM. A PPPoE is connected to the integrated terminal device  200  in the remote access server (RAS)  112 . At this time, the RAS  112  is end-to-end connected by a PPPoE server, and all signals generated in the integrated terminal device  200 , (e.g., a signal generated by click of the browser to connect to the Internet) are operated on the PPPoE. The moving picture expert group transport stream (MPEG TS) is practically processed in an ATM layer. Accordingly, the MPEG TS corresponding to HDTV broadcast or VOD contents enters the ATM layer of the integrated terminal device  200  to transmit the MPEG TS to the MPEG-2 decoder  236 . At this time, the microprocessor unit  228  is not involved with the moving picture expert group (MPEG) data. When an Internet browser is clicked in the personal computer connected to the integrated terminal device  200 , the signal is converted into an Internet protocol packet on the PPPoE and transmitted to the RAS  112 . At this time, the RAS  112  transmits the Internet protocol packet to a desired location.  
     [0041]FIG. 5 is a diagram showing a task flow in the microprocessor unit  228  shown in FIG. 2 according to the preferred embodiment of the present invention. Referring to FIG. 5, the microprocessor unit  228  is in the idle state when no event is generated in a run-state  500 . The microprocessor unit  228  carries out tasks in response to commands received through the infrared receiver  248  from one or more of a high definition television (HDTV) task  502 , a video on demand (VOD) task  504 , a wireless local area network (WLAN) task  506 , an wireless local area network (WLAN) task  508 , an Ethernet task  510 , a power line communication (PLC) task  512  and an IEEE standard 1394 task  514 , or events generated from the personal computer connected to the Ethernet interface section  244 , PCs  214  connected to the WLAN, personal computers  216  connected to the telephone line  216  by the home phone line networking alliance (HPNA), personal computers connected to the IEEE standard 1394 cable  224 , and home appliances  222  connected to the power line  220 . Accordingly, a corresponding task run among steps  516  to  528  is performed. After the task is completed, the microprocessor unit  228  again returns to the idle state to wait for the next event. The WLAN task  506 , HPNA task  508 , Ethernet task  510 , PLC task  512 , and IEEE standard 1394 task  514  can call one another and communicate data to a WLAN interface section  204 , a phone line networking alliance (PNA) interface section  206 , a PLC controller  208 , an IEEE standard 1394 interface section  210  and an Ethernet interface section  244 .  
     [0042] In the integrated home network system of the present invention, when the subscriber wants to view a high definition television (HDTV) broadcast through the HDTV  212 , channels can be selected or volume can be controlled using the remote controller  246 . When the subscriber wants to receive HDTV video on demand (VOD) contents, he connects to the VOD server  110  through the Internet  106  using the personal computer connected to the Ethernet interface section  244  of the integrated terminal device  200 , a personal computer connected to the WLAN, or the personal computer connected to the home phone line networking alliance (HPNA), etc., and requests desired VOD contents. Then, the VOD server  110  outputs the moving picture expert group transport stream (MPEG TS) corresponding to the requested VOD contents. The MPEG TS corresponding to HDTV broadcast or VOD contents is received from is the very-high-data-rate digital subscriber line (VDSL) interface section  202  via the access network  102  and the VDSL  120 . The ATM cell associated with the MPEG TS corresponding to the HDTV broadcast or VOD contents outputted from the VDSL interface section  202  is converted into an MPEG TS in the MPEG-TS section  234 , and the MPEG TS is outputted to the MPEG-2 decoder  236 . The MPEG-2 decoder  236  searches for a channel or video identifier and an audio identifier (which corresponds to the VOD contents) selected by the subscriber using the remote controller  246 , decodes video data and audio data from the MPEG TS, and outputs the decoded video data and audio data to the HDTV encoder  238 , which transmits the HDTV signal to the HDTV  212 . Accordingly, the subscriber can view an HDTV broadcast or VOD contents received through the VDSL  120  via the access network  102  from the service providing system  100 .  
     [0043] In order to have access to the Internet  106  using a personal computer connected to the Ethernet interface section  244  of the integrated terminal device  200 , the personal computer connected to the wireless local area network (WLAN), the personal computer connected to the home phone line networking alliance (HPNA), etc., an Internet protocol packet is selected from an IPOA, a bridge mode, etc., of the point-to-point protocol over Ethernet (PPPoE). The Internet protocol packet is converted into an asynchronous transfer mode (ATM) cell. The ATM cell is inputted to the remote access server (RAS)  112  via the interface section  202 , the very-high-data-rate digital subscriber line (VDSL)  120  and the access network  102  so as to complete an ATM. The ATM cell is again converted into the Internet protocol packet so as to connect to the Internet  106 .  
     [0044] When high definition television (HDTV) broadcast viewing and Internet access are simultaneously performed, the Internet protocol packet is selected from various modes of the point-to-point protocol over Ethernet (PPPoE) and is converted to an asynchronous transfer mode (ATM) cell. Since the virtual path identifier (VPI) value and virtual channel identifier (VCI) value used herein are different from those used in the HDTV broadcast, no collision occurs.  
     [0045] Hereinafter, examples of controlling home appliances  222  are described. Once a gas sensor connected to the power line communication (PLC) controller detects gas leakage, the gas detector transmits the detection signal to the power line  220  through the PLC controller  208 . The microprocessor unit  228  of the integrated terminal device  200  receives the signal, converts the signal into a transmission control protocol/Internet protocol (TCP/IP) packet, and connects to the Internet  106  through the very-high-data-rate digital subscriber line (VDSL)  120  so as to inform a wireless application protocol (WAP) server. Then, the WAP server informs the subscriber of the gas leakage through a cell phone as a short message service (SMS) message. Usually, the subscriber may connect to the PLC server driven by the WAP server to check the state of gas valve. If the gas valve is opened, the subscriber can close the gas valve through the WAP server. Specifically, a command to close the gas valve is transmitted from the WAP server to the integrated terminal device  200  using a TCP/IP packet. Then, a corresponding command is transmitted by the PLC controller  208  of the microprocessor unit  228  through the power line  220 .  
     [0046] In accordance with the present invention, multimedia services, Internet access, home appliance control, etc., are provided by one integrated terminal device  200  using the remote controller  246 . Therefore, networking over the whole country will enable the subscriber to view a high definition television (HDTV) broadcast at a hospital, hotel, company, television station, as well as at home. In addition, the blanket area can be reduced, the subscriber can enjoy the quality of cultural life at low cost, and the subscriber can use multimedia services such as an HD video on demand (VOD) service. Since only one very-high-data-rate digital subscriber line (VDSL)  120  cable is introduced into the subscriber&#39;s home  104 , the installation is convenient, the cost is reduced, and viewing fees of HDTV broadcast, VOD service fees, Internet access fees, etc., can be collectively processed. In accordance with the present invention, networking the subscriber&#39;s home  104  with one integrated terminal device  200  can provide the subscriber&#39;s home  104  with various services.  
     [0047] The present invention has been described in connection with what is presently considered the most practical and the preferred embodiment. However, it is intended to cover various modifications within the spirit and the scope of the appended claims. In particular, the very-high-data-rate digital subscriber line (VDSL) is mentioned as a subscriber line in the embodiment of the present invention. However, if desired, other lines, (e.g., an optical line) can be used instead of the VDSL. If the optical line is used, an optical interface section (instead of the VDSL interface section  202 ) is used in the integrated terminal device  200  to directly connect to the optical line of the optical line terminal (OLT)  116 . In addition, an example for providing an HDTV broadcast, Internet access, video on demand (VOD) service and home appliance control is mentioned in the embodiment of the present invention. However, if desired, they can be selectively used in accordance with the practical application thereof. Furthermore, the integrated terminal device including the Ethernet interface section, home phone line networking alliance (HPNA) interface section, wireless local area network (WLAN) interface section and IEEE standard 1394 interface section is described. However, if desired, these interface sections can be selectively included in the integrated terminal device. Connection with other interfaces, such as Blustooth, home RF, osgi, UPnP, voice over Internet protocol (VoIP), etc., is also possible by including corresponding interface sections in the integrated terminal device  200 . Therefore, the scope of the invention is indicated by the appended claims and the equivalency of the claims, rather than the embodiments as described above.