DE19927711A1 - Transmission device for transferring digital video disc information over a network - Google Patents

Abstract

The device includes a transport format converter unit for receiving and converting user interface data entered via a user interface for command and control of the converter. There is a device with a display unit for displaying the user interface, and a physical layer for connecting the devices for a communication. An Independent claim is also included for a method of transferring digital video disc (DVD) information between equipment's over a network.

Description

BACKGROUND OF THE INVENTION FIELD OF THE INVENTION

The present invention relates to a digital da transmission and in particular both to a device as well as a method for transferring information from a digital video disc (Digital Versatile Disc, DVD) a network to a device that has a user interface can display, which allows the display device, the Control DVD information.

DESCRIPTION OF THE PRIOR ART

Generally, an optical disc player (DVD player, DVD player) a bit stream that is from a disc under Read using a video decoder installed in it and converts the decoded video signal into an analog one TV signal (TV signal) using a scheme such as the NTSC standard (National Television System Committee).

The structure of such a general DVD player is shown in FIG. 1. In Fig. 1, a spindle motor (SP) 104, a plate 102 rotates. A receiving unit 106 receives light that has been irradiated to the plate 102 and reflected by it to read data from the disk 102nd The receiving unit 106 also includes a loading mechanism that can transport the receiving device and load the plate 102 .

A radio frequency amplifier (RF-AMP) 108 amplifies an RF signal that is picked up by the recording unit 106 , removes noise, performs an analog-to-digital conversion and detects a synchronization signal (sync). A servo controller 110 controls the rotation of the disk 102 and the focusing and tracking of the recording to accurately read the data from the disk 102 under the control of a system controller 116 . An eight-to-fourteen modulation (EFM) signal output from RF amplifier 108 is provided to a digital signal processor (DSP) 112 .

The DSP 112 demodulates the EFM signal read from the disk 102 and phase-compensates the data using a phase locked loop (PLL) based on the detected synchronization, descrambling, error detection / correction and buffer control 114 through. The transfer rate of a signal written on disk 102 is greater than or equal to that of a signal read by DSP 112 , so the data processed in DSP 112 is temporarily stored in buffer 114 and then transferred when an MPEG video decoder 128 and an MPEG audio decoder 130 need the data. The series of processes are carried out under the control of the system controller 116 so that there is no overflow in the buffer 114 and this does not become empty. The DSP 112 also detects the control data portion of the bit stream read from the disk 102 and provides the detected data to the system controller 116 .

The data from the DSP 112 can be scrambled to prevent digital copying. In this case, the data is descrambled by a content scrambler (CSS) decoder 122 . The descrambled data stream is a program stream that is described in the MPEG standard (Moving Picture Expert Group). The program stream includes a video pack that has an MPEG-1 or MPEG-2 format, an audio pack that has an MPEG format, an audio coding (AC) -3 format or a linear pulse code modulation (PCM) format, a sub-picture package and a navigation package.

The CSS decoder 122 descrambles the bit stream provided by the DSP 112 , a demultiplexer (DEMUX) 124 demultiplexes the descrambled stream into the audio packet, the video packet, the sub-picture packet and the navigation packet, with the MPEG video decoder 128 the demultiplexed video packet decodes, the MPEG audio decoder 130 decodes the demultiplexed audio package, and the sub-picture decoder 132 decodes the de-multiplexed sub-picture packet, such as a menu or an insert. A video mixer 134 mixes the decoded video data and the sub-picture data, and a video digital-to-analog converter (DAC) 136 converts the output signal of the video mixer 134 to an analog signal. Then an analog coded video signal is output by a video encoder 138 . An audio DAC 140 outputs the audio data decoded by the MPEG audio decoder 130 as an analog audio signal.

An interface (I / F) 126 of a central processing unit (CPU) forms an interface with the system controller 116 so that the MPEG video decoder 128 , the MPEG audio decoder 130 and the sub-picture decoder 132 decode at one schedule according to the MPEG format.

A first memory 118 for storing various programs required by the system controller 116 may include an erasable programmable read only memory (EPROM), and a front controller 120 transmits key data used by a user via remote control or are input from a front control panel of the player to the system controller 116 .

To video and audio information from a general DVD-Ab game device to a display device for display, such as to transmit a television receiver or a monitor, the DVD player transmits the video and audio signals using predetermined signal lines according to one analog interface. That is, a data transmission channel  between the DVD player and the display device for the display is used by a user through the direct ver bind a plurality of signal lines, that is, one first channel for video and two to six channels for audio, from each connection point of the DVD player to the display device, installed so that the video and audio Si gnale, which are supplied by the DVD player, in analog signal form through the signal lines to the display direction are transmitted. For a transfer of a quali high-quality video information becomes a super video (S-Video) output signal separated and by a special cable transfer. The transmission mode of the super video output i However, signals are made in analog signal form.

To transmit digital information use DVD-Ab play equipment also the Sony Philips digital interface (SPDIF) in which a video signal is available for connection direction output as a digital signal and for display device is transmitted by signal lines. SPDIF can but did not support complicated functions like that Controlling the DVD player via the display device or checking the operating status of the DVD player.

The analog interface has the disadvantages that noise is superimposed during the transmission of a signal. The means various factors, such as the connection state ner connecting device, the quality of signal lines, or whether noise is generated near the analog interface or not, can greatly affect the quality of the transmitted video and Audio signals affect, and the fidelity of the transmitted signals is due to physical properties the signal lines themselves determined. The analog cut The following additional problems arise.

First, a DVD remote control is required to get one Control DVD player. Although a television is only an on is pointing terminal, it requires remote control for that Control the function of the TV. So when the need arises  maneuverability to ver a variety of devices bind, so a variety of remote controls are necessary, so that it becomes quite inconvenient for a user.

Second, if an analog interface is used to connect digital devices, the various network functions that a digital interface provides cannot be implemented.

When using a digital interface, such as an IEEE 1394 det, the above problems can be solved. The DVD player mentioned above, however, is for playback in a television set that has an analog input, without careful consideration of a digital long distance visual device manufactured. So it is, even if the DVD-Ab game device and a digital television with the IEEE 1394 Interface connected, difficult, the current Stan dard DVD information using a digital remote to give the visual device again. That means being a digital long distance vision device, a receiver for receiving high definition Television (HDTV) can process a bit stream that is a MPEG-2 Transport Stream (TS) format, while the DVD player stores a bit stream that an MPEG-2 Pro format (PS) format, the format conversion from MPEG-2 PS format to MPEG-2 TS format performed in advance the data from the DVD player through the IEEE-1349 interface to transmit to the display device that uses the MPEG-2 TS format.

SUMMARY OF THE INVENTION

An object of the present invention is to provide a Device for transmitting image disc (DVD) information tion via a network to a display device, in which pre-displays the DVD information by the display direction controlled according to a user's control command can be.  

Another object of the present invention is a method for transferring DVD information over a To deliver network to a display device through which the Display of the DVD information according to the control command of a Be can be controlled by the user.

To solve the first task, a device for the Transfer of information between devices via a Network supplied, which device comprises: ei ne first device that a transport format converter for receiving user interface data via a Entered user interface includes, where the User interface for controlling and controlling the first device and for converting information into a transport format is used for the transmission; a second Device which has a display unit acting as a Display unit for displaying the user interface for instructing and controlling the first device; and a physical layer for connecting the first and second devices for communication.

In order to solve the second task, a procedure for the Transfer information between devices in one Network provided, the method comprising: Connecting a first device to a network, the first device for receiving user interface l data entered via a user interface for instructing and controlling a first device and for converting the information into a transport format serves for a transmission; Connect a second device tion with the network, the second device for the An show the user interface for instruction and control serves the first device; Receive the user interface location data in the second device; Show the user interface data in the second device; a Be Allow users to issue a command in response to the user interface information contained in the second device  appears to enter and transfer tax and Command information from the second device to the first Device according to user input to gain access to the In formation provided by the first device Taxes.

BRIEF DESCRIPTION OF THE DRAWINGS

The above objects and advantages of the present invention be made clearer by a detailed description before embodiments with reference to the accompanying Drawings.

Fig. 1 is a block diagram of a general video disc player (DVD player);

Fig. 2 is a block diagram of a transmission apparatus according to a preferred embodiment of the present invention;

Fig. 3 is a detailed block diagram of the PS / TS converter of Fig. 2;

Fig. 4 is a block diagram of a transmission device according to another embodiment of the present dung OF INVENTION; and

Fig. 5 is a block diagram of a transmission device dung according to another embodiment of the present OF INVENTION.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

Looking at Fig. 2, in a device for transmitting information over a network according to a preferred embodiment of the present invention, there is an image player (DVD player) used as a server (first device) and a digital one A television set (TV) used as a client (second device) is connected by a digital interface such as an IEEE 1394 cable.

In FIG. 2, the structure and operation of a Spindelmo gate 204, a receiving unit 206, a Radiofrequenzver er (RF AMP) 208, a servo controller 214, and a di gitalen signal processor (DSP) 210 and a buffer 212 the same as that in Fig. 1, so that an explanation of these directions is omitted.

A content scrambling system (CSS) decoder 216 descrambles the data provided by the DSP 212 when the data output by the DSP 212 is scrambled to prevent digital copying. The descrambled stream, a program stream that is prescribed in the MPEG standard, comprises a video packet which has an MPEG-1 or MPEG-2 format, an audio packet which is an MPEG format, an audio coding (AC) -3 format or a linear pulse code modulation (PCM) format, a sub-picture package and a navigation package.

Here, the navigation package includes various types of information mation that can control a bit stream, for example Me nü button information, highlighted information, angle off election information and record search information. Also Bildin formation for displaying an insert or menu in the sub image package saved. The menu is made with reference to the Screen control information stored in the navigation package is displayed, giving information such as the position of the Buttons on a screen, the color, the number of buttons, the color of a selected button and the color of one led buttons includes.

A PS-to-TS (PS / TS) converter 218 converts data having a program stream (PS) format provided by the CSS decoder 216 , under the control of a system controller 220, into data representing a transport stream - (TS) format, transmits audio / video (A / V) data, which have the TS format, through the isochronous channel of an IEEE 1394 interface 230 to a digital television (TV) 240 , and provides that Navigation package and the sub-image package, which are separate from the program stream, to the system controller 220 .

The IEEE 1394 interface 230 includes a network server that has a protocol stack that includes a physical layer, a link layer, an Internet Protocol (IP) layer on the link layer, an address resolution protocol (ARP) layer, a transmission control protocol ( TCP) layer, a user datagram protocol (UDP) layer, a hypertext transfer protocol (HTTP) layer and a dynamic host configuration protocol (DHCP) layer. The applicant has described such an IEEE 1394 interface in US Patent Application No. 09 / 104,299 entitled "Browser based command and control home network". The IEEE 1394 interface 230 can also use A / V control and transaction set (AV / C CTS) control commands for inter-device control rather than a client / server scheme as in the TCP / IP structure of the Internet.

The system controller 220 reads desired data from the disk 202 through the servo controller, data search and loading mechanism controller, and manages the DSP 210 and the buffer 212 so that an overflow or out of a program stream having variable bit rates does not occur. A WEB page is also provided using a protocol stack for a web server function so that the web server function can be performed according to the coordinate information detected by the web browser of the digital television 240 . Here, the operation of the DVD player is controlled by the digital TV 240 using received information instead of using a remote control signal for the DVD player, and the contents of the disc are reproduced.

In the case where the audio data is in a PCM format and the system used does not include a PCM decoder, a linear PCM audio decoder 222 can also be included.

FIG. 3 is a block diagram of the PS / TS converter 218 shown in FIG. 2. The PS / TS converter 218 comprises a selector 252 for a navigation packet (NV_PCK), a selector 254 for a sub-picture packet (SP_PCK), a selector 256 for a video packet, a selector 258 for an audio packet, a video buffer 260 , an audio buffer 262 , a buffer controller 264 , a PAT TS packet generator 266 , a PMT TS packet generator 268 , a data TS packet generator 270 , a timing controller 272 and a multiplexer 274 .

That is, the NV_PCK selector 252 and the SP_PCK selector 254 extract the navigation pack for data control and subpicture pack from the PS provided by the CSS decoder 216 of FIG. 2. The V_PCK selector 256 and the A_PCK selector 258 extract the video and audio packets from the PS, and the video buffer 260 and the audio buffer 262 temporarily store the extracted packets. The buffer controller 264 controls the data input / output of the video buffer 260 and the audio buffer 262 and calculates the amount of data stored in the video buffer 260 and the audio buffer 262 .

The MPEG-2 system hierarchy is briefly explained here. On Program consists of video information, audio information and other data information. In the MPEG-2 TS, the one in the MPEG-2 system is prescribed, various programs that Vi contain deo, audio and data information in a stream multiplexed in time. It is also PSI (program specific Information) included to make it a receiving device allow to receive a transmission stream to pas send audio, video and data information that you want  program to extract. Generally is the PSI in a tabular form, like a program association on table (PAT), a program card table (PMT) or egg ner condition access table (CAT) stored. The PAT and the PMT are important. There is only one PMT per program, in which serial number of TS packages (which have a fixed length of 188 bytes), the video and audio streams of the ent speaking program, called the packet identifier (PD) are summarized in a number of points. The means that the video stream of the program is shown as PID = xxxx and the audio stream is expressed as PID = YYYY.

In general, since there are many Pro programs exist, a large number of PMTs in the TS. So is an integrated table for connecting the different Programs that transmit in the current TS to the PIDs of the PMT become necessary for each program, and such an inte The table is the PAT. Generally exist as a Program is represented by a program number, points the PAT from program numbers (= xxxx) and information that the Define relationship between PMT and PIDs.

Thus, the PAT TS packet generator 266 generates PAT TS packets by receiving the header ID information output from the system controller 220 and the packet generation timing information provided by the timing controller 272 . The PMT TS packet generator 268 generates PMT TS packets by receiving the header ID information output from the system controller 220 and the packet generation timing information provided by the timing controller 272 . The data TS packet generator 270 receives A / V data from the video buffer 260 and the audio buffer 262 and generates data TS packets that include a program clock reference (PCR) and a presentation time stamp (PTS) under the control of the timing controller 272 .

The timing controller 272 provides the PAT TS packet generator 266 and the PMT TS packet generator 268 with packet generation timing information such as that PMT TS and PAT TS packets are repeatedly generated in a predetermined period. The transmission timing is also controlled so that each PAT TS and each of the PMT TS packets is transmitted once every 7 msec. The timing controller 272 controls the packet generation timing of the data TS packet generator 270 by receiving information about the capacity of the video buffer 260 and the audio buffer 262 from the buffer controller 264 . The multiplexer 274 multiplexes the output signals of the PAT TS packet generator 266 , the PMT TS packet generator 268 and the data TS packet generator 270 under the control of the timing controller 272 and transmits the multiplexed result in MPEG-2 TS format.

Fig. 4 is a block diagram of an information transmission device according to another embodiment of the present invention. In comparison with the structure of the device shown in FIG. 2, a DVD player used as a server (first device) further includes an sub-picture processor 322 and a navigation data processor 324 . A PCM audio decoder (not shown) may also be included. Here, an MPEG video decoder and an MPEG audio decoder, which are normally included in the DVD player, are omitted because their functions have no relation to the present invention.

Also, a digital television used as a client (second device) includes an MPEG-2 TS demultiple xer (DEMUX 342 ), a video decoder 344 , an audio decoder 346 , a video mixer 348 , a user interface manager 350 , a video -DAC 352 and an audio DAC 354 .

In Fig. 4, the PS / TS converter 318 provides MPEG-2 TS for A / V data through the isochronous IEEE 1349 channel to the MPEG-2 TS DEMUX 342 and supplies the sub-picture processor 322 and the navigation data processor 324 with the sub-picture package and the navigation package extracted from the PS.

The sub-picture processor 322 processes the sub-picture packet information from the PS / TS converter 318 and transmits bitmap picture information through the asynchronous IEEE 1394 channel to the video mixer 348 . The navigation data processor 324 decodes presentation control information (PCI) of the navigation packet information provided by the PS / TS converter 318 and sends the obtained screen control information through the asynchronous IEEE 1394 channel to the user interface manager 350 and receives command data through the asynchronous IEEE 1394 channel from the digital Television that controls the operation of the DVD player according to the key input by a user to control the servo controller 314 for searching the data. Here, the screen control information for the sub-picture includes a format for the transmission of control information in pixel units and information about when, where on the screen and in which color the areas of the sub-picture information are displayed. The screen control information for the sub-picture and the bitmap picture information is formatted in a predetermined format to be transmitted to the control of the display device (digital television), that is, the video mixer 348 and the user interface management device 350 .

Meanwhile, the MPEG-2 TS DEMUX 342 demultiplexes at the end of the client for receiving the EVE information, for example in a digital TV (DTV) or a monitor that can display MPEG-2 TS information Isochronous IEEE 1394 channel is output by PS / TS converter 318 , into a video stream and an audio stream.

The video decoder 344 decodes the demultiplexed video stream and outputs the decoded video signal at a time predetermined by the MPEG-2 video format under the control of the user interface manager 350 . The audio decoder 346 also decodes the demultiplexed audio stream and outputs the decoded audio signal at a time predetermined by the MPEG-2 audio format under the control of the user interface manager 350 .

The video mixer 348 further includes a general function for displaying simple graphic information on the screen and mixes the sub-picture transmitted from the DVD player with a video signal to make its synchronization and position according to the transmitted screen control information, and gives the mixed signal to the Vi deo-DAC 352 .

That is, when a command to display sub-picture information, such as menu screens or inserts, is entered by a user, the video mixer 348 presses a bit map image by a graphic overlay for a predetermined time in the corresponding place on a screen according to the bit map image information Sub-picture from, which is transmitted through the asynchronous IEEE 1394 channel from the sub-picture processor 322 of the DVDL player, and the screen control information generated by the navigation data processor 324 and transmitted through the asynchronous IEEE 1394 channel.

The function of the video mixer 348 with respect to the graphical overlay can be implemented with a browser installed in the device. In this case, the browser displays the sub-picture on a screen.

Unlike a conventional user interface management device, in which the control of the interface is limited to the corresponding device, the user interface management device 350 can receive a command related to the DVD player from a user and the command to the DVD player transmitted so as to allow a user to select the DVD information.

That is, when a command related to the DSI (data search information) is input by a user through a key input using a remote controller to control the operation of a DVD player, the user interface manager 350 transmits the DSI Command through the asynchronous IEEE 1394 channel to the navigation data processor 324 of the DVD player. For example, even if the command entered by the user relates to PCI (presentation control information), the user interface controller 350 transmits a command to change the color of the corresponding area of the bitmap image to the video mixer 348 according to the one stored therein PCI. The navigation data processor 324 controls the servo controller 314 , which controls access to the DVD disc 302 according to the DSI command transmitted through the asynchronous IEEE 1394 channel.

In a modification of the structure of Fig. 4, the bit map image information decoded from the sub-image information and the image control information for displaying the bit map image information in one screen by the isochronous IEEE 1394 channel together with the audio and / or (A / V) information is transmitted. In this case, the DVD player needs a circuit (selection control) for the selected transmission of the bitmap image and the screen control information or the A / V information, and a standard that prescribes how to transmit the bitmap image information through the isochronous IEE-1394 channel must be erected.

Fig. 5 is a block diagram of an information transmission apparatus according to still another embodiment of the present invention. Compared to the structure of the device shown in Fig. 4, a PS / TS converter 416 of a DVD player divides the sub-picture packet and the navigation pack having a PCI extracted from the PS into TS packets and multiplexes the sub-picture - and navigation packages together with PAT TS, PMT TS and data TS packages. A navigation DSI decoder 418 decodes the navigation packet having DSI that is output from the PS / TS converter 416 and receives a navigation command that is transmitted through the asynchronous IEEE 1394 channel from a DTV. The DTV also includes a sub-picture decoder 448 and a navigation PCI decoder 450 , which decode the sub-picture stream and the navigation stream, respectively, after being demultiplexed by an MPEG-2 TS DEMLIX 442 .

In FIG. 5, the PS / TS supplies transducer 416, the Navigationspa ket having DSI information that was extracted from the PS that has been entered by a CSS decoder 414, vigationspaket for navigation DSI decoder 418 and forms packets from the Na having PCI and the sub-picture package into a navigation TS packet and a sub-picture TS packet under the control of a system controller 220 . The PS / TS converter 416 multiplexes the navigation TS packet and the sub-picture TS packet together with PAT TS, PMT TS and data TS packets and transmits the result through the isochronous IEEE 1394 channel to the DTV. The navigation DSI decoder 418 decodes the navigation DSI data provided by the PS / TS converter 416 and stores the decoded data.

The MPEG-2 TS DUMX 442 of the DTV demultiplexes the MPEG-2 TS, which was transmitted through the isochronous IEEE 1394 channel, into a video stream, an audio stream, a sub-picture stream and a navigation stream. Under the control of a user interface manager 454, a video decoder 444 decodes the video stream and provides the decoded video signal to a video mixer 452 , an audio encoder 446 decodes the audio stream and provides the decoded audio signal to an audio DAC 458 , a sub-picture encoder 448 decodes the Sub-image stream and provides bitmap image information to video mixer 452 , and a navigation PCI decoder 450 decodes the navigation stream and provides a command related to PCI to video mixer 452 .

When a command to display sub-picture information, such as menu screens or inserts, is entered by a user, the user interface manager 454 provides the command to the video mixer 452 , and the video mixer 452 shows the bitmap image decoded by the sub-picture decoder 448 by one graphic overlay in the corresponding space on a screen and outputs the result via a video DAC 456 .

When a user enters the command related to PCI, the user interface manager 454 transmits the command to the navigation PCI decoder 450 , and the navigation PCI decoder 450 processes the user's command according to the PCI , which has been decoded and stored here, and transmits a corresponding control command to the video mixer 452 .

The video mixer 452 displays the sub-picture information transmitted from the sub-picture decoder 448 on a screen according to the commands from the user interface manager 454 and the navigation PCI decoder 450 , changing pixel values corresponding to a specific sub-picture area. to display the sub-picture information. For example, in the case when a user selects a new button on a displayed menu, the navigation PCI decoder 450 searches for information specifying parts of the sub-picture area whose brightness value is to be changed, in the PCI information decoding and has been stored here and provides a command to the video mixer 452 to change the brightness value. Then, the video mixer 452 changes the pixel value of the corresponding area of the sub-picture to be displayed. Through the above procedure, a user can change the button highlighted in the DVD control menu, the menu being displayed on the DTV screen. Then, when a user selects a special button on a menu, the corresponding command is transmitted through the asynchronous IEEE 1394 channel to the navigation DSI decoder 418 of the DVD player to execute the corresponding command.

Thus, the user interface manager 454 receives a command related to the DVD player from the user and analyzes the command to send the corresponding command to the video mixer 452 , the navigation PCI decoder 450, or the DVD player .

In a modification of the device shown in FIG. 5, the decoding can be implemented by the navigation DSI decoder 418 in the DVD player in the display device (DTV). That is, all the information read from the DVD is converted into the MPEG-2 TS and transmitted to the display device, and the display device decodes and transmits data having the MPEG-2 TS format using a Decoder installed therein and provides the result to a user. Here, the difference between the modification and the device shown in FIG. 5 is that all navigation information including both PCI and DSI is decoded in the display device. To this end, the display device transmits a position command to directly access DVD information to the system controller of the DVD player through the asynchronous IEEE 1394 channel, and then the system controller controls the servo controller that controls access to the disc. For example, if the playback button of a remote controller for the display device is never pressed, a command indicating the address of the disc from which the information is to be read is transmitted to the DVD player.

In another modification of the device shown in FIG. 5, the navigation PCI decoder installed in the display device may be constructed in the DVD player. In this case, the navigation information need not be multiplexed into TS in the PS / TS converter and then transmitted to the display device. The navigation information read from the DVD can be processed by a navigation decoder installed in the DVD player. When the PCI is decoded, a command that specifies the pixels of the sub-picture whose picture point values are to be changed is transmitted to the video mixer of the display device through the asynchronous IEEE 1394 channel. Here, all control commands relating to navigation are transmitted from a user to the DVD player through the asynchronous IEEE 1394 channel.

As described above, the device for Transmission of DVD information through the IEEE 1394 interface to a display device, the data in the MPEG TS For mat processed, the PS format converted to the TS format, so that the information transmission device according to the before lying invention easily an interface with the display device that uses the MPEG format.

Since the DVD information as a digital signal through the IEEE 1394 interface being transmitted has the information Transmission device according to the present invention Advantages that the attenuation of a signal by the quality and the properties of a connection medium and the interference Comparison of video and audio signals through rapid comparison hardly occurs to the conventional analog interface.

A user is not bothered by two Connect the device to a variety of signal lines got to. That is, connecting the two devices with one IEEE 1394 cable is sufficient to provide all information transmitted so that you do not have to pay attention to signal line high quality. With the plug & play function on for the self-recognition of the connection status must be User did not enter any information about how the two Devices are connected.  

According to the present invention, since the operation of the DVD player can be controlled by commands that using a remote control for the display device input, an interface to the user easily achieved without separate remote controls for each Device would be required.

In addition, the digital IEEE 1394 interface allows ge according to the present invention that the to be connected before directions are connected so that the devices inte grail can be managed and operated. The DVD player device can also act as a server based on a browser network through the IEEE 1394 bus.

Claims (15)

1. An apparatus for transmitting information between devices over a network, comprising:
a first device having a transport format converter for receiving user interface data input via a user interface, the user interface for instructing and controlling the first device and for converting information into a transport format for transmission;
a second device having a display unit, the display unit being used to display the user interface, for instructing and controlling the first device; and
a physical layer for connecting first and second devices for communication. 2. The apparatus of claim 1, wherein the information is a Program stream format. 3. The apparatus of claim 1, wherein the transport format converter comprises:
an extracting device for extracting video, audio, navigation and sub-pixel information in packet units from the information in a program stream format read from an image disc (DVD);
a first transport stream packet generator for generating an additional transport stream information packet by adding a header with additional information required for program analysis in the second device;
a second transport stream packet generator for generating a data transport packet stream by adding a header to the extracted video and audio data in packet units;
a multiplexer for multiplexing the outputs of the first and second transport stream packet generators to provide a transport stream; and
a timing controller for controlling the timing of the generation of the additional information and data transport stream packets. 4. The device of claim 3, wherein the physical Layer is the IEEE 1394 interface. 5. The apparatus of claim 4, wherein the first apparatus further comprises the following
a sub-picture processor for decoding the sub-picture extracted by the transport format converter to generate bit map picture information and to transmit the generated bit map picture information through the asynchronous IEEE 1394 channel; and
a navigation data processor for decoding the navigation data extracted by the transport format converter to generate screen control information and for transmitting the generated screen control information through the asynchronous IEEE 1394 channel, and for controlling the reading of the DVD information according to the navigation control command given by the IEEE 1394 asynchronous channel was transmitted by the second device, and
the second device further comprising:
a user interface management device for transmitting the navigation command as far as a user's command is a navigation related command, as user interface data through the asynchronous IEEE 1394 channel to the navigation data processor, and for generating control information for controlling the user interface display when the user's command is a display related command; and
a video mixer for receiving the screen control information and the bitmap image information transmitted through the asynchronous IEEE channel, and for displaying the bitmap image in the corresponding area of a screen by graphically superimposing it according to the control information generated by the user interface management device . 6. The apparatus of claim 5, wherein the video mixer one Browser that includes the graphical overlay function points. 7. The apparatus of claim 4, wherein the first apparatus further comprises the following
a sub-picture processor for decoding the sub-picture extracted by the transport format converter to generate bit map picture information;
a navigation data processor for decoding the navigation data extracted by the transport format converter to generate screen control information and for controlling the reading of the DVD information according to a navigation control command transmitted by the asynchronous IEEE 1394 channel from the second device; and
a selection controller for selectively transmitting the bitmap image information, the screen control information and the output of the transport format converter through the isochronous IEEE 1394 channel; and
the second device further comprising:
a user interface management device for transmitting the navigation-related command when the user's command is a navigation-related command, as user interface data through the asynchronous IEEE 1394 channel to the navigation data processor and for generating control information for control the user interface display when the user's command is a display related command; and
a video mixer for receiving the screen control information and bitmap image information transmitted through the IEEE isochronous channel and for displaying the bitmap image in the corresponding area of a screen by graphically superimposing it according to the control information generated by the user interface management device. 8. The apparatus of claim 7, wherein the video mixer one Browser that includes the graphical overlay function points. The apparatus of claim 4, wherein the first apparatus further comprises a first navigation decoder for decoding navigation data related to data access extracted by the transport format converter and for controlling reading of the DVD information according to the Navigation control command transmitted by the asynchronous IEEE 1394 channel from the second device;
wherein the second packet transport stream generator of the transport format converter brings the navigation-related data and the sub-picture into packets;
the multiplexer multiplexing a navigation packet transport stream and a sub-picture packet transport stream together with an additional information packet transport stream and a data packet transport stream to output the multiplexed result in a transport stream format; and
the second device further comprises:
a sub-picture decoder for decoding a sub-picture stream transmitted through the IEEE 1394 isochronous channel to generate bit map picture information;
a second navigation decoder for decoding a navigation stream transmitted through the IEEE 1394 isochronous channel to generate screen control information;
a user interface management device for transmitting the command as user interface data when a user command is a navigation related command through the asynchronous IEEE 1394 channel to the first navigation decoder, and for generating control information for controlling the user interface display when that Command of the user is a command related to the representation; and
a video mixer for receiving the bitmap image information and the screen control information from the sub-picture decoder and the second navigation decoder and for displaying the bitmap image in the corresponding area of a screen according to the control information generated by the user interface management device. 10. The device of claim 9, wherein the first device does not include the first navigation decoder, and the second navigation decoder of the second device the Na decoding navigation data relating to data access drag, in addition to the navigation data that relates to the Get data representation, and the transport format converter al le data of the program stream in the form of packets in the Transport stream brings, the program stream video data, Contains audio data, all navigation data and subpicture data. 11. The device of claim 9, wherein the second device does not contain the second navigation decoder and which it Most navigation decoder of the first navigation device decodes data related to data access in addition to navigation data that relates to the data display and the transport format converter receive the video data, Audio data and subpicture data in one program stream in packs into a transport stream. 12. The apparatus of claim 9, wherein the video mixer one Browser that includes a graphical overlay function on. 13. The apparatus of claim 1, wherein the user with the Remote control user interface for the second Device communicates, and the second device with egg ner other device is connected via a network, so that the other device using the remote control for the second device is controlled.   14. An apparatus for converting the format of an input program stream to a transport stream, comprising:
an extractor for extracting various types of stream data from the input program stream;
a first transport stream packet generator for generating an additional information transport stream packet by adding a header to the additional information required for program analysis;
a second transport stream packet generator for generating a data transport stream packet by adding headers to various types of stream data;
a multiplexer for multiplexing the output signals of the first and second transport stream packet generators and outputting the multiplexed result as a transport stream; and
a timing controller for controlling the timing of the generation of the additional information and the data stream package. 15. A method for transferring information between devices over a network, comprising:
Connecting a first device to a network, the first device for receiving user interface data input via a user interface, for instructing and controlling a first device, and for converting information into a transport format for transmission;
Connecting a second device to the network, the second device for displaying the user interface for instructing and controlling the first device;
Receiving the user interface data in the second device;
Displaying the user interface data in the second device;
give a user permission to enter a command in response to the user interface displayed in the second device; and
Transfer of control and command information from the second. Device to the first device according to the user's input to control access to information provided by the first device.