KR100370186B1 - Device controlling system and device status displaying method on home network - Google Patents

Abstract

The present invention relates to a device control system on a home network and a device status display method on a home network. A device control system on a home network for displaying and controlling a non-IP based device connected on an IEEE 1394 bus is provided. It has a predetermined display screen, displays a device connected to the IEEE 1394 bus by displaying a web browser on the screen, displays the homepage related to the function of the device selected by the user among the displayed devices, and receives the user input on the displayed homepage. A control device for outputting a predetermined control command to the device; And a controlled device that receives a control command from the control device and performs an operation suitable for the control command.

According to the present invention, in the device control system on the home network that performs IEEE 1394 communication, the devices constituting the home network system are devices based on non-IP, and the web browser of the device in charge of the control even if the standard signals of the devices are different It is possible to display information such as a homepage where the functions of other connected devices are described on the screen, and to exchange control signals accordingly.

Description

Device controlling system and device status displaying method on home network

The present invention relates to a device control method and a device status display method of a home network system, and more particularly, a device on a home network that controls a device that does not provide TCP / IP in a web browser-based home network system and displays it on a screen. A method of displaying device status on a control system and a home network is provided.

Recently, various digital devices such as digital TV (DTV), digital VCR (DVCR), and digital set-top box have emerged, and IEEE 1394, a network that allows these digital devices to interface and communicate with each other, is in the spotlight. (See references in IEEE 1394-1995 High Performance Serial Bus, IEC 61883, etc.).

FIG. 1 illustrates a protocol stack of an IEEE 1394 device (hereinafter, referred to as a 1394 device), and a general protocol stack provided by each device employing a 1394 communication function includes a physical layer 100, which is a lowermost layer. It consists of a link layer (110), a transaction layer (transaction layer) 120 and a serial bus management (Serial Bus Management) 130, which is the top layer. The physical layer 100 receives a bit string from the link layer 110 at the time of transmission, obtains a right to use a serial bus, encodes it, converts it into an electrical signal, and transmits data on an external bus. When receiving, the reverse process is performed. The link layer 110 handles data in units of packets, and has a function of packet construction and decomposition, error detection, and bus cycle management. In general, the physical layer 100 and the link layer 110 are composed of a chipset. Transaction layer 120 provides transactions such as data read / write / lock and performs asynchronous communication with other devices (or nodes) on the 1394 bus using services provided in the lower layers. The serial bus management 130 includes various data structures such as a configuration ROM and a control and status register (CSR), and includes power management and a system-wide connection structure (topology). Responsible for the top level management roles such as speed maps. The transaction layer 120 and the serial bus management layer 130 are written in software and are implemented by being embedded in the microcomputer of each device.

2 is a block diagram of a digital device having a 1394 communication function, and the digital device includes a device dependent hardware 200, a microcomputer 210, a physical layer performing block 220, and a link layer. It is composed of a performance block 230. The unique function performing unit 200 performs a unique function of the corresponding device. The microcomputer 210 supports 1394 and performs operations of the transaction layer and the serial bus management layer described with reference to FIG. 1. The physical layer performing block 220 is hardware implementing the functions of the physical layer 100 of FIG. 1, and the link layer performing block 230 implements the link layer 110 and the CIP header insertion / removal function of IEC 61883. It's hardware.

In such communication between devices, there is a problem that the user interface for displaying or controlling the device is not smooth.

FIG. 3 is a block diagram of a device control system on an IEEE 1394 home network based on IP. The device control system on a home network is a control device which displays or controls functions and operations of other devices on an IEEE 1394 bus. 300 and a controlled device 310 which is controlled by the control device and provides an operation and information. For example, if digital TVs, digital VCRs, digital set-top boxes, and digital camcorders are connected to the IEEE 1394 bus to form a home network, the digital TV with the most favorable user interface is the control device. The remaining devices become controlled devices. The control device 300 includes a memory 301 for storing a home page for control, a web server 302 for displaying or transmitting information of the home page on a web browser screen, and TCP information for processing Internet information. 303 and the IP unit 304, and the IEEE 1394 standard unit 305 for transmitting and receiving information by converting IP-based information into an IEEE 1394 standard signal or vice versa. The controlled device 310 has a second memory 311 for storing homepage information describing the corresponding device function, and transmits the homepage information to the control device 300 or according to a control command introduced from the control device 300. It is composed of a second web server 312, a second TPC 313, a second IP 314 and a second IEEE 1394 section 315 for processing a signal and generating a signal for performing a predetermined function accordingly. . A device control system on a home network, in which both controlled and controlled devices are based on IP, provides a user-friendly user interface by displaying their information in a web browser and hyper text markup language format. However, since each device has to establish a web server environment, it may cause compatibility problems when information is not transmitted when other devices which do not have such an environment are connected on the IEEE 1394 bus.

The present invention provides a device control system on a home network in which a web server-based control device controls a device that does not provide TCP / IP in a web browser-based home network system and displays the information on a web browser. To provide a device status display method on a home network.

1 illustrates a protocol stack of an IEEE 1394 device (hereinafter, referred to as a 1394 device).

2 is a block diagram of a digital device with a 1394 communication function.

3 is a block diagram of a device control system on an IEEE 1394 home network based on IP.

4 is a configuration diagram of a first embodiment of a device control system on a home network of the present invention.

5 is a configuration diagram of a second embodiment of a device control system on a home network of the present invention.

6 is a block diagram of a third embodiment of a device control system on a home network of the present invention.

7 is a flowchart of a device status display method on a home network of the present invention.

8A-8B show screens of the control device immediately after the IEEE 1394 bus is reset in FIG.

9A and 9B illustrate a homepage screen of a predetermined device displayed on a web browser screen of a control device immediately after a user selects a predetermined icon on the screens of FIGS. 8A through 8B.

Fig. 10 shows an example of the display form of the device control function button.

11 illustrates various forms and functions of device control function buttons providing a user interface, and examples of related devices using such icons.

In order to solve the above problems, a device control system on a home network for displaying and controlling a non-IP based device connected on an IEEE 1394 bus has a predetermined display screen and a web browser on the screen. A control device that displays devices connected on the IEEE 1394 bus, displays a homepage related to a function of a device selected by a user among the displayed devices, receives a user input on the displayed homepage, and outputs a predetermined control command to the selected device ; And a controlled device which receives the control command from the control device and performs an operation suitable for the control command.

The control device may include: a memory storing a home page containing a function for controlling the controlled device and home page information describing the functions and operations of the controlled device; The homepages are received from the memory and displayed on a web browser screen, and when a user command is received on the web browser screen, the command is outputted or a function of a predetermined industry standard standard signal inputted from the controlled device is interpreted. A web server displaying the function on a web browser screen; Converts the command received from the web server into a predetermined audio / video device control (command) related industry standard signal, or outputs a predetermined function related signal from the controlled device to the web server Industry standard protocol section; And an IEEE 1394 section for transmitting a command changed from the industry standard protocol to the industry standard standard signal to the controlled device or transmitting a signal flowing from the controlled device to the standard protocol.

The industry standard protocol unit is preferably a non-IP based predetermined protocol layer.

The industry standard protocol unit is preferably AV / C-CTS (Audio Video Control-Command & Transaction Set).

The controlled device may include: a second IEEE 1394 unit which receives a control command signal output from the controlled device and outputs a predetermined signal relating to the controlled device function or operation to the controlled device; Interpret the control command signal introduced from the second IEEE 1394 to generate and output a control signal for controlling the operation or function of the controlled device, or to inform the industry standard protocol of the function or operation of the controlled device. It is preferable to have a standard protocol unit of the second industry that converts the signal to the second IEEE 1394 unit.

In order to solve the above problem, a device control system on a home network for displaying and controlling a non-IP based device connected on an IEEE 1394 bus has a predetermined display screen and is provided on a predetermined portion of the screen. Control device for displaying other devices connected to the home network by displaying a web browser screen, receiving and displaying a homepage describing device functions from the device selected by the user, and outputting a control command according to a user input on the home page to the selected device. ; And a controlled device that has the device function description homepage for explaining the function, provides the homepage according to a request of the control device, and receives the predetermined control command from the control device and performs an operation accordingly. .

The control device may include: a memory storing home page information containing a function for controlling the controlled device; Display a web browser screen according to the homepage information provided from the memory, exchange information with the controlled device using the control information of the homepage, display it on the web browser, and output the command when a user command is received. Or a web server for interpreting a function of a predetermined industry standard standard signal introduced from the controlled device and displaying the function on the web browser screen; Converts the command received from the web server into a predetermined audio / video device control (command) related industry standard signal, or outputs a predetermined function related signal from the controlled device to the web server Industry standard protocol section; And an IEEE 1394 section for transmitting a command changed from the industry standard protocol to the industry standard standard signal to the controlled device or transmitting a signal flowing from the controlled device to the standard protocol.

The controlled device may include: a second IEEE 1394 unit which receives a control command signal output from the controlled device and outputs a predetermined signal relating to the controlled device function or operation to the controlled device; Analyzing the control command signal introduced from the second IEEE 1394 to control the operation or function of the controlled device, or converting the corresponding function or operation of the controlled device into the industry standard protocol signal to convert the second IEEE 1394 A second industry standard protocol unit outputting to a negative unit; And a homepage storage unit for storing homepage information describing the function and operation of the device and outputting the homepage information to the second IEEE 1394 unit at a predetermined request.

In order to solve the above problems, a device control system on a home network using an IEEE 1394 bus includes a home page describing the functions and operations of various digital devices and an analyzer capable of interpreting predetermined standard signals from the digital devices as web signals. A device information providing server for providing the homepage information and the interpreter according to a request through the Internet; Has a predetermined display screen and displays icons of devices connected on the IEEE 1394 on a web browser screen displayed on a predetermined portion of the screen, and when a user selects an icon of the predetermined device, homepage information of the corresponding device is displayed; An IP based control device downloaded from an information providing server to display the homepage information, and outputting a control signal according to a user's selection of a function of the displayed device; And a controlled device which receives the control signal from the control device and performs an operation according thereto.

The device information providing server may delete or update information of each device homepage that is already present, and may add information of a new device.

The control device may include a TCP / IP protocol unit that provides a predetermined communication protocol so as to request information or download the requested information to the device information providing server through an Internet network; Display the homepage information of the device introduced from the TPC / IP protocol unit on a web browser screen, and transmit a user's predetermined device homepage information request command through the web browser to the TPC / IP protocol unit, or the controlled device Web server for transmitting and receiving control information related to the function and operation of the; A link unit which converts the information from the web server into a predetermined standard signal of the controlled device by using the interpreter information, or interprets the predetermined standard signal of the controlled device as a web signal and outputs it to the web server; An industrial standard protocol unit which receives a controlled device control signal converted from the link unit into the predetermined standard signal and converts the control unit device according to the IEEE 1394 format, or transmits a signal from the controlled device to the link unit; And an IEEE 1394 protocol unit for outputting a signal from the industry standard protocol unit to the controlled device connected on an IEEE1394 bus, receiving the signal output from the controlled device, and outputting the signal output to the industry standard protocol unit. Do.

In a device control system on a home network that performs communication between devices using an IEEE 1394 bus, a device status display method on a home network in which a control device displays information of other devices is provided. Bringing up a web browser screen immediately after the reset, and displaying icon information representing other connected devices; If a user selects one of the icons, displaying a homepage describing a function of a device associated with the icon on the web browser screen; And when a user inputs a predetermined command on the homepage screen describing the function of the selected device, displaying operation details of the device operated according to the command on a portion of the homepage of the web browser screen. This is preferred.

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

4 is a configuration diagram of a first embodiment of a device control system on a home network of the present invention, wherein the device control system on a home network for displaying and controlling a non IP based device connected on an IEEE 1394 bus is shown in FIG. , Control device 400 and controlled device 410. The control device 400 has a predetermined display screen capable of a user interface, such as a digital TV, and displays a device connected to the IEEE 1394 bus by displaying a web browser on the screen. Displaying other devices on the web browser screen is to display icons or selection buttons representing the devices. When one of the icons displayed on the web browser screen is selected, the home page describing the function of the device is updated on the web browser screen. When a user receives a predetermined command on the displayed homepage, the user transmits the command signal to the corresponding device through the IEEE 1394 bus, and receives and displays an operation signal from the corresponding device. The control device 400 is composed of a memory 401, a web server 402, an industry standard protocol unit 403, and an IEEE 1394 unit 404. The memory 401 stores a home page of a control device, which contains a function for controlling the controlled device 410, and home page information describing the functions and operations of the controlled devices 410. The homepage information describing the controlled device 410 is generally known as a device function, that is, in the case of a VCR, a play function, a fast forward (FF) function, a rewind (RW) function, a recording function, and the like. I wrote about the function in advance. The web server 402 displays a web browser on a portion of the screen immediately after the IEEE 1394 bus is reset, displays icons of devices constituting the home network on the screen, and the memory 401 when the user selects a predetermined icon. ), The homepage information of the control device is obtained and displayed on the web browser screen. When the user selects a function of the controlled device on the homepage screen, a control signal for the corresponding function is generated and output. The industry standard protocol unit 403 converts a control command received from the web server 402 into an industry standard standard signal related to an audio / video device control (command) or outputs a predetermined command from the controlled device. The signal related to the function is converted into a web signal and output to the web server 402. The industry standard protocol unit 403 is a protocol layer adopted for communication between non-IP-based digital devices, such as AV / C-CTS (Audio Video Control-Command & Transaction Set), and the like. In addition to the C-CTS, there are a number of other standards. The IEEE 1394 unit 404 transmits a signal flowing from the industry standard protocol unit 403 to a corresponding controlled device connected to the IEEE 1394 bus, or receives the signal from the controlled device 410 and receives the industry standard protocol unit 403. To send. The controlled device 410 analyzes a signal flowing from the control device 400 and performs a function or operation corresponding thereto. The controlled device 410 includes a second IEEE 1394 part 411 and a second industry standard protocol part 412. The second IEEE 1394 part 411 and the second industry standard protocol part 412 are the same as the IEEE 1394 part 404 and the industry standard protocol part 403 included in the control part 400, and the second IEEE 1394 part 411 is provided. Outputs a predetermined signal relating to a controlled device function or operation to the control device 400 and receives a predetermined control command from the control device 400. The second industry standard protocol unit 412 analyzes the control command signal introduced from the second IEEE 1394 unit 411 to generate and output a control signal for controlling the actual operation or function of the controlled device 410, or the controlled device ( The information on the corresponding function or operation of the 410 is converted into an industry standard standard signal and output to the second IEEE 1394 part 411.

As such, when the homepage describing the functions of the controlled device 410 is previously created and stored in the controlling device 400, the device to be controlled is IP-based, such as IP, TCP, or a web server. It is possible to provide a user interface on a web browser through the control device 400 without employing the protocol of. This reduces hardware complexity while providing the same user interface as IP-based control schemes, and allows manufacturers to interface with other devices, that is, compatibility.

FIG. 5 is a configuration diagram of a second embodiment of the home network system of the present invention, wherein a user interface for displaying and controlling functions of non IP based devices connected on an IEEE 1394 bus is displayed on a web browser screen. A device control system on a home network that provides a control device includes a control device 500 and a controlled device 510. The control device 500 is a device that provides a user interface screen, such as a digital TV, and displays a web browser in the screen to display other devices connected to the IEEE 1394 bus, the controlled device (s) as icons, and the like. When the user selects a predetermined device icon on the web browser screen, the device receives homepages describing the device's functions, etc., from the device, and displays the webpage in the web browser screen. Output The control device 500 includes a memory 501, a web server 502, an industry standard protocol unit 503, and an IEEE 1394 unit 504. The memory 501 stores home page information for performing a function of the control device 500 for controlling the controlled device 510. The web server 502 displays a web browser screen according to the home page information provided from the memory 501, exchanges information with the controlled device 510 using the control information contained in the home page, and displays the result on the web browser. When the user command is received through the web browser, the (control) command is output or the predetermined standard signal introduced from the controlled device 510 is converted into web information and displayed on the web screen. The industry standard protocol unit 503 converts the command received from the web server 502 into an industry standard standard signal related to an audio / video device control (command) or outputs from the controlled device 510. A predetermined signal is output to the web server 502. The industry standard protocol unit 503 is a protocol layer adopted for communication between non-IP-based digital devices, such as AV / C-CTS (Audio Video Control-Command & Transaction Set). The IEEE 1394 unit 504 transmits a signal flowing from the industry standard protocol unit 503 to a corresponding controlled device connected to the IEEE 1394 bus, or receives the signal from the controlled device 510 and receives the industry standard protocol unit 503. To send. The controlled device 510 has a homepage describing its functions, provides this function description homepage at the request of the control device 500, and performs the corresponding function and operation according to a control command from the control device 500. To perform. The controlled device 510 includes a second IEEE 1394 unit 511, a second industry standard protocol unit 512, and a homepage storage unit 513. The second IEEE 1394 unit 511 is the same as the IEEE 1394 unit 504 of the control device 510, and flows in a control command signal output from the control device 500, and controls a predetermined signal related to its function or operation. Output to device 500. The second industry standard protocol unit 512 is the same as the industry standard protocol unit 503 of the control device 510, and controls its operation or function by interpreting the control command signal introduced from the second IEEE 1394 unit 511. Or converts its function or operation into an industry standard protocol signal and outputs it to the second IEEE 1394 part 511. The homepage storage unit 513 stores homepage information describing the function and operation of the device, and outputs the homepage information to the second IEEE 1394 unit 511 at a predetermined request.

6 is a configuration diagram of a third embodiment of a device control system on a home network according to the present invention. The device control system on a home network using an IEEE 1394 bus includes a device information providing server 600, a control device 610, and a target device. Control device 620. The device information providing server 600 has a home page describing the functions and operations of various digital devices and an interpreter capable of interpreting predetermined standard signals provided from such digital devices as web signals, and requests from clients through the Internet 601. According to these homepage information and the interpreter is provided. The device information providing server 600 may delete or update information on the device homepage being stored and has an update function for adding information of a new device. The control device 610 is an IP-based device, and serves as a client for downloading information from the device information providing server 600. The control device 610 is a device such as a digital TV having a predetermined display screen for providing a user interface, which displays a web browser on the screen and displays icons of other devices connected on the IEEE 1394 bus therein. When the user selects one of the displayed icons, the homepage information of the device indicated by the selected icon is downloaded from the device information providing server 600 and displayed on the web browser screen. When a user inputs a predetermined device function control command on the displayed homepage (for example, a 'play' function of the VCR), a corresponding control signal is output to the controlled device 620. The control device 610 is composed of a TCP / IP protocol unit 611, a web server 612, a link unit 613, an industry standard protocol unit 614, and an IEEE 1394 unit 615. . The TPC / IP protocol unit 611 provides a predetermined communication protocol for requesting information or downloading the requested information to the device information providing server 600 through the Internet network 601. The web server 612 displays the homepage information of the controlled device introduced from the TPC / IP protocol unit 611 on the web browser screen, and displays the user's command through the web browser. 611 or a control command related to the functions and operations of the controlled device 620 input by the user and data from the controlled device 620. The link unit 613 converts the information from the web server 612 into a predetermined standard signal of the controlled device 620 using the interpreter information downloaded from the device information providing server 600 together with the predetermined device function description homepage. Alternatively, the predetermined standard signal sent from the controlled device 620 is interpreted as a web signal and output to the web server 612. The industry standard protocol unit 614 receives and outputs a control signal of the controlled device 620 converted into a predetermined standard signal from the link unit 613, or outputs a predetermined standard signal from the controlled device 620. To pass. The IEEE 1394 unit 615 transmits a signal flowing from the industry standard protocol unit 614 to a corresponding controlled device connected to the IEEE 1394 bus, or receives the signal from the controlled device 620 and receives the industry standard protocol unit 614. To send. The control device 610 further includes a RAM 616 for temporarily storing the downloaded information, and the RAM 616 stores information such as the above-described analyzer downloaded from the device information providing server 600. It outputs to the link unit 613 and the like. The controlled device 620 receives a predetermined control signal from the control device 610 and performs an operation according thereto.

In the device control system on the home network of FIG. 6, even though the devices constituting the home network use communication methods employing their respective standard standards and do not store homepages separately, the device information providing server storing these communication methods and the homepage separately By downloading the analyzer and the corresponding homepage information which can convert the signal according to the communication method into the web-based signal from the 600, the device (control device 610) in charge of controlling the home network Even the device to be controlled (controlled device 620) can be displayed and controlled. In such a system, if only the control device 610 is an IP-based device, the controlled device 620 is fully compatible with the IEEE 1394 network regardless of whether a third party or another communication scheme is adopted.

7 is a flowchart illustrating a display method of a home network system according to an embodiment of the present invention, wherein a device on a home network displaying information of other devices on a web screen of a predetermined device in a home network system performing communication between devices using an IEEE 1394 bus. In the method of displaying a status, first, a web browser screen is displayed immediately after the IEEE 1394 bus is reset to display icon information representing other connected devices (step 700). Here, the icons of devices connected on the IEEE 1394 bus should include pictures or text that symbolize each device. When the user selects one of the icons, a homepage describing the function of the device associated with the icon is displayed on the web browser screen (step 710). The home page is configured to include a function button indicated so that a user can select the name of the device indicated by the home page, the current operating state of the device, and various functions of the device. Whenever a user inputs a predetermined command on the homepage screen describing the function of the displayed predetermined device, the operation state of the device operated according to the command is updated and displayed (step 720).

8A-8B show the screen of the control device immediately after the IEEE 1394 bus is reset in FIG. 7, where a web browser 800, 810 is displayed on a portion of the control device screen, and the 1394 image is displayed on the 1394 in the web browser screen. The icons of all connected devices are displayed. Here, a display method that provides a more user-friendly interface such as 8b than FIG. 8a is preferable.

9A and 9B illustrate a homepage screen of a predetermined device displayed on a web browser screen of a control device immediately after a user selects a predetermined icon on the screens of FIGS. 8A through 8B. FIG. 9A is a home page screen when the selected device among the icons of FIG. 8A or 8B is a digital VCR, the name of the device 901, a key frame 902 indicating a main operation of the device, and the device. Display device status function button 904 for status 903 and user interface. FIG. 9B is a home page screen when the selected device among the icons of FIG. 8 is a compact disc player, and the name 911 of the device, the state 912 of the device, the device control function button 913 for the user interface, and the device. The screen of the key frame 914 indicating the main operation of is displayed. The key frames 902 and 914 show information that can summarize the information of the corresponding device, and their contents may change with time. The part which displays the device status 903 and 912 is a place which displays the operating state of the corresponding device. The device control function buttons 904 and 913, which allow the user to control the function of the device, are displayed only in text as in A of FIG. 10, only in a symbolic picture as in B, or as shown in C. It can be in the form of an icon with all the pictures it symbolizes. 11 illustrates various forms and functions of device control function buttons 904 and 913 that provide a user interface, and examples of related devices using such icons.

According to the present invention, in the device control system on the home network performing IEEE 1394 communication, the devices constituting the device control system on the home network are non-IP based devices and devices that are in charge of control even when the standard signals of the devices are different from each other. It is possible to display information such as a homepage where the functions of other connected devices are described on a web browser screen, and to exchange control signals accordingly.

Claims (27)

In a device control system on a network that displays and controls devices employing different communication protocols, And a display means, wherein the display means displays a home page including the functions of the controlled device based on the other communication protocol, converts a user command input through the home page into a first protocol, and outputs the same to another communication protocol based device. And a control device for receiving data on the result and converting the second protocol to display on the home page. The method of claim 1, wherein the control device, A memory storing a home page containing a function for controlling the controlled device and home page information describing the functions and operations of the controlled device; The homepages are received from the memory and displayed on a web browser screen, and when a user command is received on the web browser screen, the command is outputted or a function of a predetermined industry standard standard signal inputted from the controlled device is interpreted. A web server displaying the function on a web browser screen; Converts the command received from the web server into a predetermined audio / video device control (command) related industry standard signal, or outputs a predetermined function related signal from the controlled device to the web server Industry standard protocol section; And And an IEEE 1394 unit for transmitting a command changed from the industry standard protocol to the industry standard standard signal to the controlled device or transmitting a signal from the controlled device to the standard protocol. system. The method of claim 2, wherein the industry standard protocol unit, Device control system on a home network, characterized in that the non-IP based predetermined protocol layer. The method of claim 2, wherein the industry standard protocol unit, Device control system on home network characterized by AV / C-CTS (Audio Video Control-Command & Transaction Set). In a controlled device controlled by a control device employing a different communication protocol on a network, A second IEEE 1394 section for receiving a control command signal output from the control device and outputting a predetermined signal relating to the function or operation of the controlled device to the control device; Interpret the control command signal introduced from the second IEEE 1394 to generate and output a control signal for controlling the operation or function of the controlled device, or to inform the industry standard protocol of the function or operation of the controlled device. And a second industry standard protocol unit which converts the signal into a second IEEE 1394 unit and outputs the signal to the second IEEE 1394 unit. The method of claim 5, wherein the second industry standard protocol unit, Device control system on a home network, characterized in that the non-IP based predetermined protocol layer. The method of claim 5, wherein the second industry standard protocol unit, Device control system on home network characterized by AV / C-CTS (Audio Video Control-Command & Transaction Set). In a device control system on a network that displays and controls devices employing different communication protocols, And display means for displaying a home page provided by the controlled device from the other protocol-based controlled device on the display means, converting a user command input through the home page into a first protocol, and outputting the first command to the controlled device. And a control device for receiving data on the result from the controlled device and converting the second protocol to display on the home page. The method of claim 8, wherein the control device, A memory storing home page information including a function for controlling the controlled device; Display a web browser screen according to the homepage information provided from the memory, exchange information with the controlled device using the control information of the homepage, display it on the web browser, and output the command when a user command is received. Or a web server for interpreting a function of a predetermined industry standard standard signal introduced from the controlled device and displaying the function on the web browser screen; Converts the command received from the web server into a predetermined audio / video device control (command) related industry standard signal, or outputs a predetermined function related signal from the controlled device to the web server Industry standard protocol section; And And an IEEE 1394 unit for transmitting a command changed from the industry standard protocol to the industry standard standard signal to the controlled device or transmitting a signal from the controlled device to the standard protocol. system. The method of claim 9, wherein the industry standard protocol unit, Device control system on a home network, characterized in that the non-IP based predetermined protocol layer. The method of claim 9, wherein the industry standard protocol unit, Device control system on home network characterized by AV / C-CTS (Audio Video Control-Command & Transaction Set). In a controlled device controlled by a control device employing a different communication protocol on a network, A second IEEE 1394 section for receiving a control command signal output from the control device and outputting a predetermined signal relating to the function or operation of the controlled device to the control device; Analyzing the control command signal introduced from the second IEEE 1394 to control the operation or function of the controlled device, or converting the corresponding function or operation of the controlled device into the industry standard protocol signal to convert the second IEEE 1394 A second industry standard protocol unit outputting to a negative unit; And And a homepage storage unit for storing homepage information describing the function and operation of the device and outputting the homepage information to the second IEEE 1394 unit at a predetermined request. The method of claim 12, wherein the second industry standard protocol unit, Device control system on a home network, characterized in that the non-IP based predetermined protocol layer. The method of claim 12, wherein the second industry standard protocol unit, Device control system on home network characterized by AV / C-CTS (Audio Video Control-Command & Transaction Set). In the device control system on the network, And display means, displaying other devices connected to the network on the display means, downloading homepage information of a selected device from a network, displaying the homepage information, and controlling the user's function of the displayed device. A device control system on a network comprising a control device for outputting a signal. The method of claim 15, wherein the control device, A TCP / IP protocol unit for providing a predetermined communication protocol so as to request information or download the requested information to the device information providing server through an Internet network; Display the homepage information of the device introduced from the TPC / IP protocol unit on a web browser screen, and transmit a user's predetermined device homepage information request command through the web browser to the TPC / IP protocol unit, or the controlled device Web server for transmitting and receiving control information related to the function and operation of the; A link unit which converts the information from the web server into a predetermined standard signal of the controlled device by using the interpreter information, or interprets the predetermined standard signal of the controlled device as a web signal and outputs it to the web server; An industrial standard protocol unit which receives a controlled device control signal converted from the link unit into the predetermined standard signal and converts the control unit device according to the IEEE 1394 format, or transmits a signal from the controlled device to the link unit; And And an IEEE 1394 protocol unit for outputting a signal from the industry standard protocol unit to the controlled device connected on an IEEE1394 bus, receiving the signal output from the controlled device, and outputting the signal output to the industry standard protocol unit. Device control system on home network. In a device control system on a network, the first protocol-based control device in the device state display method on the network to display information of the second protocol-based controlled devices, Displaying information representing the connected controlled devices; If the user selects one of the information, displaying a homepage describing the function of the controlled device associated with the information; And And outputting a control signal to a corresponding controlled device according to a user's selection of a function of the displayed controlled device. The method of claim 17, wherein the information representing the controlled device comprises: And a symbolic picture or text representing the controlled device. The method of claim 17, wherein the configuration of the home page, The name of the device of the home page; The current operating state of the device; And And a function button indicating a user to select various functions of the device. The method of claim 15, And a device information providing server for providing these homepage information and the analyzer upon request, including a homepage describing the functions and operations of various digital devices and an interpreter capable of analyzing a predetermined standard signal from the digital device. Device control system on the network, characterized in that. The method of claim 20, wherein the device information providing server, A device control system on a home network, wherein information on each homepage of an existing device can be deleted or updated, and information on a new device can be added. 18. The method of claim 17, wherein the device status display method on the network is: And displaying the operation details of the controlled device operated according to a control signal on the controlling device. The method according to claim 1 and 8, The first protocol conversion is a device control system on a network, characterized in that for converting IP-based protocol format information into non-IP-based protocol format information. The method according to claim 1 and 8, The second protocol conversion is a device control system on a network, characterized in that for converting non-IP based protocol format information into IP based protocol format information. The method of claim 17, wherein displaying the home page of the controlled device comprises: And displaying and displaying homepage information of a controlled device stored in the control device. The method of claim 17, wherein displaying the home page of the controlled device comprises: And displaying and displaying home page information stored in the controlled device to be displayed. The method of claim 17, wherein displaying the home page of the controlled device comprises: The control device may download homepage information of a device corresponding to a controlled device to be displayed from a predetermined server providing homepage information of various devices through a network, and display the homepage information on a screen of the control device. How to display device status on the network.