KR100576691B1 - Apparatus and method for transmitting sub video stream of recording medium - Google Patents

Abstract

The present invention provides an apparatus and method for transmitting a digital sub-picture stream, wherein the sub-picture stream included in the digital data stream is amplified when the digital data stream (MPEG) is transmitted using the IEEE 1394 interface. The present invention relates to an apparatus and a method for transmitting a sub-image stream of a recording medium, which is converted into a standard PES or private section format and is transmitted. Separating the sub-picture stream read from the recording medium; Converting the separated sub-picture stream into a PES data format; And transmitting the converted sub-picture stream in a set transmission format. The sub-picture stream, which is played back and separated from a recording medium, is converted into a PES format or a private section format. By optimizing the transmission of the stream, it is a very useful invention to enable the video display device receiving the sub-picture stream to selectively display a sub-picture screen such as a subtitle video or a picture in picture (PIP) video.

Description

Apparatus and method for transmitting sub video stream of recording medium

The present invention relates to an apparatus and a method for transmitting a sub-image stream of a recording medium, and more particularly, to a digital data stream of an MPEG method using an IEEE 1394 interface and included in the digital data stream. The present invention relates to an apparatus and a method for transmitting a sub-picture stream of a recording medium for separating and transmitting a sub-picture stream, which is converted to an MPEG standard in a PES format or a private section format.

In recent years, standardization of DVD media (DVD: Digital Versatile Disc or Digital Video Disc.) Is being carried out quickly among related companies, and it is expected that the spread of DVD will be widely spread in the future. A digital video display device capable of displaying a high-definition image, for example, a digital satellite broadcasting or a digital television (D-TV, hereinafter referred to as D-TV) that displays digital high-definition images of the DVD more clearly. It is expected to spread widely.

Accordingly, the use of the DVD player (or DVD recorder / player) for playing the DVD and the D-TV is expected to increase rapidly, and the communication standard of IEEE 1394 is required for data transmission between the devices. Employment is confirmed.

On the other hand, the DVD player processes the MPEG data digital data stream, in particular, the program stream (Program Stream, hereinafter referred to as PS) into presentation (PT) data and navigation data (Navigation, NV). The presentation data PT is output as a video / audio signal, and the navigation data NV is used to control the playback operation of the DVD player.

However, unlike the DVD player, the D-TV processes video / audio signals by processing MPEG data digital data streams, in particular, a transport stream (TS), as presentation data. Since the DVD player converts the PS into a TS and transmits the signal, or the D-TV converts the input PS into a TS and processes the signal.

Therefore, as an example of a device for converting a format of a digital data stream as described above, a configuration and an operation of a conventional PS / TS converter for converting a PS into a TS and a DVD player and a D-TV according to the present invention will be described with reference to the accompanying drawings. The explanation is as follows.

FIG. 1 is a block diagram of a general optical disc apparatus and a video display apparatus for transmitting and receiving data using the IEEE 1394 interface, and a DVD player and a D-TV are shown as an example.

1 shows an optical disc (DVD) 1, an optical pickup (P / U) 2 for reading recording data from the optical disc, and a demodulation section 3 for demodulating and error-correcting the read data. A scrambler (Scrambler or CSS) for adding a copy protection code to the output data of the demodulator, and a selection output unit 5 for selecting an output path of the data to which the copy protection code is added; The data stream input from the selective output unit, that is, the program stream, is divided into presentation data (PT: Presentation), and navigation data (NV: Navigation, hereinafter NV). Data parser 6 for separating / outputting PT data into audio, video and sub picture data, and respective decoders 7 for decoding the separated audio, video and sub picture data. 8,9) and the decoded audio , A presentation engine (10) for outputting a digital audio signal and a video signal by combining video and sub-picture data, and a D / A converter for converting and outputting the digital audio and video signals into analog video and audio signals, respectively. (11, 12) and the navigation manager for controlling the reading operation of the optical disk to receive the NV data divided and outputted separately from the data separator (Parser) 6 to perform the operation corresponding to the user's key input (Navigation) Manager 13, the PS / TS converter 14 for converting the output data output from the selective output unit 5, that is, the program stream PS into a transport stream TS, and the converted transport. A DVD player S1 comprising an IEEE 1394 interface unit 15 for transmitting a stream TS;

Demuxing the IEEE 1394 interface unit 21 that receives the data stream transmitted from the DVD player S1, that is, the transport stream TS, and the transport stream TS received from the interface unit 21. Demux 23 for separating and outputting audio and video data, and decoders 24 and 25 for decoding and outputting the separated and output audio and video data, respectively, as digital audio signals and video signals. ), D / A converters 26 and 27 for converting / outputting the digital audio and video signals into analog audio and video signals, and a user interface controller for outputting a control signal in response to a user's key input. D-TV (S2) comprising a 22,

It is shown that the user key input means 100 for controlling the operation of the DVD player (S1) and the D-TV (S2).

2 is a detailed configuration diagram of a conventional PS / TS converter. Each data packet constituting the PS by receiving the output data of the selective output unit 5, that is, the program stream PS, is described above. The header of the packet is decoded, the ID of the data stream included in the packet header is detected, and the navigation data NV, the presentation data PT, and the data stream are included in the program stream PS. Demuxing of the packet header decoder 41 for separating and outputting system clock data and for each component data of the separated presentation data PT, that is, audio and video (including sub-picture) data, respectively. Demux 42 to separate / output and buffer audio and video data separated / output from Demux 42, and read out at a speed faster than the input speed. (Buffer) (43,44) and the packet header The interpreter 47 which interprets the system clock data separated and output from the decoder 41 and the interpreted system clock are compared with a reference system clock (STC: System Time Clock). Program specification information (PSI: Program Specific Information) is received by receiving a timing controller 49 for controlling data read timing and data transfer timing of (43, 44) and navigation data (NV) output separately from the packet header decoder (41). The additional information generating unit 46 which adds and outputs an information analysis and a cyclic redundancy check (CRC) code, and the additional information generating unit 46, buffers 43 and 44, and the timing controller 49 Controls the operation of the TS packetizer 45 and the buffers 43 and 44 and the timing controller 49 which packetize and output the program stream PS into the transport stream TS according to the output. And compensating control / compensation unit 48 And it shows the configured.

Prior to the description of the operation of the conventional PS / TS converter and the DVD player and the D-TV configured as described above, the format of the digital data stream, i.e., the program stream PS and the transport stream TS, of the MPEG method is described. Briefly explain the differences.

The program stream PS is a data stream composed of a plurality of packets in which audio data, video data, and additional information data, which are digital data, is one packet. The packet has a variable length. The size of the data stream can be changed according to the size of the data. Therefore, the size of each packet is not always the same. For example, if the size of the data packet is set to 2Kbyte, and the arbitrary data size exceeds the 2Kbyte, a part of the arbitrary data can be continuously inserted into the next subsequent packet, and the arbitrary data size can also be inserted. If less than 2Kbyte, a padding area may be created in the extra portion of the packet, and another arbitrary data may be inserted and used according to the size of 2Kbyte.

On the other hand, the transport stream TS has a fixed size of a data stream. For example, an audio packet 188 bytes, a video packet 188 bytes, and content can be determined. Twelve packets consisting of ten packets, one audio packet, and one additional information data packet are configured and used as a group.

Therefore, in order to convert the program stream PS into the transport stream TS, the size of the program stream PS packet is adjusted to the size of the transport stream TS packet, for example, 188 bytes, and is sequentially divided. It should be changed and configured on the time axis. At this time, various necessary headers are added and converted.

Hereinafter, operations of the conventional PS / TS converter and the DVD player and the D-TV according to the related art will be described. As shown in FIG. 1, a program stream PS that is first read and processed from an optical disc (DVD) is described above. The data is separated into audio, video, and sub-picture data by a parser 6, and the audio and video signals are transmitted by the decoders 7, 8, 9, the presentation engine 10, and the D / A converter. When the program stream PS is input to the PS / TS converter 14 by the selection output unit 5, the packet header decoder 41 is input as shown in FIG. The program stream PS is decoded to interpret the stream ID, and the program specification information PSI, which is information for controlling the navigation data NV included in the program stream PS, in particular, the program reproduction, audio and video Presentation data (PT) corresponding to the signal, Separates each separated by the system clock data (SCD).

The separated program specification information (PSI) is information for controlling program reproduction. The separated program specification information (PSI) is input to the additional information generation unit 46 and converted into data to which a CRC is added. The system clock data SCD is interpreted by an interpreter ( 47 is inputted to the system clock, and is then compared with the reference system clock STC by the timing controller 49 again. On the other hand, the presentation data PT is output as audio, video, and sub-picture data by the demux 42, and the sub-picture data is video data that is usually signal-processed into subtitle images or PIP images. The data is batch-processed with the data and applied to the video buffer 43 having a 2 Kbyte buffer capacity, and the audio data is applied to the audio buffer 44 having a 4 Kbyte buffer capacity. Audio and video (including sub-picture) data stored in the buffers 43 and 44 at an input rate of 10.08 Mbps, respectively, are output at a read speed of 19.28 Mbps or more, respectively, under the control of the control / compensation unit 49.

In this way, the output and generated data is converted into a transport stream TS by the packetizer 45, and the converted transport stream TS is converted into an IEEE 1394 interface unit 15, 16), to the D-TV S2.

The input transport stream TS is displayed as an audio and video signal through a demux 23, a decoder 24, 25, and a D / A converter 26, 27 configured in the D-TV S2. For example, the transport stream TS is transmitted in an isochronous data packet structure having isochronous property, and a user selection key selected from the D-TV S2, that is, navigation. Command is an asynchronous data packet structure having asynchronous, which is transmitted to the DVD player S1 so that the navigation manager 13 controls the navigation operation according to the user interface. .

In this way, the conventional PS / TS converter and the DVD player and the D-TV, which are constructed and operated, include the sub-streams in the video data and collectively process them, so that the images displayed on the D-TV (S2), in particular, sub-pictures. In order to selectively display the subtitle image or the PIP image generated by the stream, the user must control the DVD player S1. In order to separate and control the data separately, another complicated algorithm is required, which causes a complexity, a large size, and a delay in processing speed.

Accordingly, the present invention was created to solve the above problems, and separates the sub-picture stream from the digital data stream read out from the recording medium, and converts the separated sub-picture stream into the PES format, IEEE 1394. It is an object of the present invention to provide an apparatus and a method for transmitting a sub-image stream of a recording medium transmitted using an interface.

In accordance with an aspect of the present invention, there is provided a method of transmitting a sub-image stream of a recording medium, the method comprising: 1) separating a sub-image stream read from the recording medium; Converting the separated sub-picture stream into a PES data format; And transmitting the converted sub-picture stream in a set transmission format.

In accordance with another aspect of the present invention, there is provided a method for transmitting a sub image stream of a recording medium, the method comprising: a step of separating a sub image stream read from the recording medium; Converting the separated sub-picture stream into a private section format including a table ID; And transmitting the converted sub-picture stream in a set transmission format.

In accordance with another aspect of the present invention, there is provided a method of transmitting a sub-image stream of a recording medium, the method comprising: 1) separating palette data from a recording medium data stream; Extracting a sub-picture stream from the data stream from which the palette data is separated and converting the sub-picture stream into a PES data format; And transmitting the converted sub-picture stream in a set transmission format.

In accordance with another aspect of the present invention, there is provided a method for transmitting a sub image stream of a recording medium, the method comprising: converting a recording medium data stream including a sub image stream into a PES data format; And transmitting the data stream converted into the PES data format in an established transmission format by adding an identification code for identifying the sub-picture stream.

An apparatus for transmitting a sub image stream of a recording medium according to the present invention comprises: separating means for separating a sub image stream from a data stream of the recording medium; Converting means for converting the separated sub-picture stream into a PES data format and transmitting the converted sub-picture stream in a set format; And control means for controlling the converting means so that the identification information of the sub-picture stream to be converted and transmitted is added to the stream.

The apparatus and method for transmitting a sub-image stream of a recording medium according to the present invention, which is performed as described above, separates the sub-video stream included in the data stream read out from the recording medium, and converts the sub-picture stream into an MPEG standard. By converting to the PES data format and transmitting using the IEEE 1394 interface, the video display device that receives and processes the sub-video stream can selectively display subtitle video or PIP video, The sub video stream transmission is optimized.

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

3 is a block diagram of an optical disk apparatus and an image display apparatus to which a sub-stream stream transmission apparatus and method of a recording medium according to the present invention are applied, and a DVD player and a D-TV are shown as an embodiment.

3 shows an optical disc (DVD) 51, an optical pickup (P / U) 52 for reading recorded data from the optical disc, and a demodulator 53 for demodulating and error correcting the read data. And a scrambler (Scrambler or CSS: Copy Protect System) 54 for adding a copy protection code to the output data of the demodulator, and a selective output unit 55 for selecting an output path of the data to which the copy protection code is added. The data stream input from the selective output unit, that is, the program stream, is divided into presentation (PT) data and navigation data (NV), and the divided PT data is further divided into audio, video, and sub-pictures. Data parser 56 for separating / outputting picture data, and decoders 57, 58 and 59 for decoding the separated audio, video and sub-picture streams, and the decoded audio and video. And sub-images Presentation engine (60) for outputting digital audio and video signals by combining the trim, and D / A converter (61, 62) for converting and outputting the digital audio and video signals into analog video and audio signals, respectively. And a navigation manager 63 that receives the NV data separated from the data separator 56 and controls the read operation of the optical disc to perform an operation corresponding to a user's key input. And a PS / TS converter 64 for converting output data output from the selective output unit 55, that is, a program stream PS into a transport stream TS, and the converted transport stream TS. A DVD player (S1) comprising an IEEE 1394 interface (65) for transmitting a signal;

Demuxing the IEEE 1394 interface unit 71 for receiving the data stream transmitted from the DVD player S1 and the data stream received from the interface unit 71, that is, the transport stream TS Demux 73 for separating and outputting video and sub-picture streams, and decoding the separated / output audio, video and sub-picture data, respectively, and outputting them as digital audio, main and sub-picture signals. Decoders 74, 75 and 76, an overlay unit 77 for selectively overlaying the main video signal and the sub video signal and outputting the video signal, and the digital audio and video signals as analog audio. And a D / A converter (78,79) for converting / outputting an image signal and a user interface controller (72) for outputting a control signal in accordance with a user's key input. )Wow,

It is shown that the user key input means 100 for controlling the operation of the DVD player (S1) and the D-TV (S2).

4 is a detailed configuration diagram of a PS / TS converter, which is an embodiment of a digital data stream format converting apparatus according to the present invention. The output data of the selective output unit 55 as described above, that is, the program stream PS Each data packet header is decoded to detect the ID of the data stream included in the packet header, and the navigation data NV included in the program stream PS, that is, the program A packet header decoder 81 that separates / outputs navigation data for controlling playback, presentation data PT and system clock data (SCD), and each configuration data of the separated presentation data PT; That is, a demux 82 for demuxing and separating / outputting audio, video and sub-picture streams, and the audio, video and sub-divisions separated / outputted from the demux 42. video After buffering each trim, buffers 83, 84, and 85 are read at a speed faster than the input speed, and system clock data separated and output from the packet header decoder 81 are output. By comparing the interpreter 88 and the interpreted system clock with a reference system clock (STC), the data read timing and the data transfer timing of the buffers 83, 84 and 85 are controlled. Receives navigation data (NV) separately output from the timing controller 90 and the data selector 80 and the packet header decoder 81, interprets program specific information (PSI), and analyzes CRC (Cyclic). An additional information generating unit 86 for adding a redundancy check code, and outputs the program stream according to outputs of the additional information generating unit 86, buffers 83, 84, 85, and the timing controller 90; PS) transport stream in PES format A TS packetizer 87 for packetizing and outputting a packet to the TS, and a control / compensation unit 89 for controlling and compensating operations of the buffers 83, 84, 85 and the timing controller 90. It is shown that configured to include.

5 is a detailed configuration diagram of a PS / TS converter, which is another embodiment of an apparatus for converting a digital data stream format according to the present invention. The output data of the selective output unit 55 described above, that is, a program stream ( PS) Decodes each data packet header, detects the ID of the data stream included in the packet header, and navigation data NV included in the program stream PS, namely And a packet header decoder 81 for separating / outputting navigation data for controlling program reproduction, presentation data PT and system clock data SCD, and each of the separated presentation data PT. Demux 82 for demuxing and separating / outputting configuration data, i.e., audio, video and sub-picture streams, and audio and video separated / outputted from the demux 42 And After buffering the video streams, the buffers 83, 84, and 85 read at a speed faster than the input speed, and the bitmap decoder 200, which decodes the sub-video stream in a bit map format. ), An interpreter 88 for interpreting the system clock data separated and output from the packet header decoder 81, and the interpreted system clock as a reference system clock (STC: System Time Clock). And a navigation controller separated from the data selector 80 and the packet header decoder 81 to control the data read timing and the data transfer timing of the buffers 83, 84, and 85. An additional information generating unit 86 for receiving program data, interpreting program specific information (PSI), and adding a cyclic redundancy check (CRC) code, the additional information generating unit 86, and a buffer; (Buffer) (83,84,85) and timing controls A TS packetizer 87 for packetizing and outputting the program stream PS into a transport stream TS in a PES format according to the output of 90; and the buffer 83 84, 85 and a control / compensation unit 89 for controlling and compensating the operation of the timing controller 90.

Hereinafter, operations of a DVD player and a D-TV to which the PS / TS conversion apparatus and method according to the present invention are applied will be described. As shown in FIG. 3, a program stream (PS) which is first read and processed from an optical disc (DVD) will be described. ) Are separated and output as audio, video, and sub-picture streams by the data parser 60, respectively, so that the decoders 57, 58, 89, the presentation engine 60, and the D / A converter 61 are output. And a data stream, i.e., a program stream (PS), read out from the optical disc (DVD) by the selective output unit 55, to the PS / TS converter 64. As shown in FIG. 4, the packet header decoder 81 decodes the program stream PS to interpret the stream ID, for example, navigation data NV included in the program stream PS, for example. , Program specification information (information for controlling program playback) PSI), the presentation data PT corresponding to the audio and video signal, and the system clock data SCD are separated and separated.

The separated program specification information (PSI) is information for controlling program reproduction. The separated program specification information (PSI) is input to the additional information generation unit 86 and converted into data to which a CRC is added. The system clock data SCD is interpreted by an interpreter ( After input to the clock 88, and output to the system clock, the timing controller 90 is compared with the reference system clock (STC). Meanwhile, the presentation data PT is output as audio, video, and sub-picture streams by the demux 82, in particular, the sub-picture stream is usually video data signal-processed as subtitle video or PIP video. For example, the video data is applied to a separate sub-picture buffer 83 having a buffer capacity of 4 Kbytes to be processed separately from the video data, and the video data is applied to a buffer 84 having a buffer capacity of 4 Kbytes. The audio / video and sub-image data applied to the audio buffer 8 having a buffer capacity of 4 Kbytes and stored at the input speeds of 10.08 Mbps in the buffers 83, 84 and 85, respectively, is controlled by the control / compensation unit 89. ), It is output at read speed of 19.28Mbps or more.

In this way, the output and generated data is converted into a transport stream TS by the packetizer 87, and the converted transport stream TS is converted into an IEEE 1394 interface unit 65, 66), to the D-TV S2.

On the other hand, the inputted transport stream TS is output through the demux 73, the decoders 74, 75, 76 and the overlapping unit 77 configured in the D-TV S2 to output digital audio and video data. The digital audio and video data are displayed as audio and video signals via D / A converters 78 and 79, and the output signal of the decoder, in particular, the sub-picture decoder 76 for decoding the sub-picture stream. That is, the sub video signal is displayed by the superimposing unit 77 as a caption video or PIP video signal.

As described above, an operation of converting the sub video stream displayed as the subtitle video or PIP video signal to the transport stream TS will be described in detail with reference to the accompanying drawings.

First, FIG. 6 illustrates a data stream conversion process according to the present invention. In particular, an elementary stream (ES) of a sub-picture stream is referred to as a packet element stream (PES). The PES packet is converted into a PES packet having a format of 'PES', and the converted PES packet is converted into a TP packet having a TP (Transport Protocol, TP) format. The element stream (ES) of the video stream is divided into a plurality of PES packets. A PES header is added to the divided PES packets, and a padding byte is added to a region in which no data exists by simply adding. Is filled.

In addition, the converted PES packet is converted into a TP packet of a plurality of TP formats. A TP header is similarly added to the divided TP packet, and an area (gray area) in which the padding byte exists is represented by The TP) header is filled with null data that has no meaning.

Meanwhile, FIG. 7 illustrates a format of a PES packet according to the present invention. The PES packet format includes a packet start code prefix and a stream ID code. A packet start code for notifying the start of the packet; PES Packet Length indicating the length of the PES packet; An optional PES header in which copy related information such as Copy Protection is optionally filled; And a PES packet data area for providing a sub-picture stream, wherein the PES packet data area can identify picture data or highlight data again. A stream identifier; A total partition indicating a total number of divided TP packets; A partition number representing each of the divided TP packet numbers; And a picture data corresponding to palette data or picture information corresponding to color information of a sub-picture stream, as shown in FIGS. 7A and 7B. (Picture) Data is allocated.

A sub-picture stream of a PES packet having the above-described format is transmitted in a compressed run length code format or a bit map format in pixel units. Same as

FIG. 8 illustrates a sub-stream stream transmission format according to the present invention. In particular, FIG. 8 illustrates a run length data format and a bit map data format. FIG. 8A illustrates a run length data format compressed and recorded on a DVD, which is an optical disk, and FIG. 8B illustrates a bit map decoder described above with reference to FIG. 5. Bitmap data formats converted by the method 200 are respectively shown. The run length data format is a data format directly read from a DVD, and is compressed information about a sub-picture stream. That is, as shown in (a) of FIG. 8, the bitmap is a compressed data format including a contiguous number of pixels followed by pixel data corresponding to the contiguous number of pixels. The bit map data format uses a bit map decoder 200 as described above with reference to FIG. 5 for the run length data read directly from a DVD. ) Is a data format converted into a pixel format, as shown in FIG. 8B. The beam and the degree of color (Color Depth) to be configured with information, in particular 16-bit pixel format is a color superposition (Overlay) information ( "@") indicating the amount of the data to be added. Meanwhile, the bitmap data format has a higher compression ratio than the run length data format, but the bitmap data format has been described above in order to convert a sub-picture stream into the bit map data format. Map) decoder 200 is necessary.

9 illustrates a sub-stream stream transmission table according to the present invention. First, the above-described palette data includes a type code indicating a type of data, that is, palette data; A data length indicating a data amount; Format indicating a data format; And pure palette data, wherein the picture data includes a type code indicating a type of data, that is, picture data; A data length indicating a data amount; Coordinate position information (Position X, Y) indicating a start point of picture data; Width / height information (Width, Height) indicating a size of picture data; And pure picture data, each of which is configured as described above. As a method of transferring the palette data and the picture data, the palette data and the picture data A method of transmitting in real time through an isochronous channel having isochronousness, and the picture data is an isochronous channel for real time transmission, and the palette data is received. A method of transmitting over an asynchronous channel may optionally be used as necessary.

Meanwhile, FIG. 10 illustrates a format for transmitting a sub-video stream using a private section according to the present invention, wherein the private section is defined in the MPEG so that the user can use it arbitrarily. Since a sub-picture stream can be transmitted by using the private section, since the allocated section is rarely used, the private section format includes a packet start code prefix. A packet start code consisting of a prefix and a stream ID code indicating a start of a packet; A table identifier (Table ID) indicating the type of transmission data, such as a sub-picture stream, highlight data, or navigation (NV) data; A section syntax indicator that provides information on whether there is data in a private section length following the private section, that is, whether there is transmission data in the private section; Private Section Length indicating the data length of the Private Section; A Private Data Bytes area to which pure data is allocated, and when the data transmission is extended, a table identifier extension indicating that the transmission data is extended; A version number indicating a version of a private section by incrementing by 1 each time the value of the private section is changed once; A Current / Continuous Indicator that provides a version of the current and subsequent private sections; A section number indicating a section number; Last Section Number indicating the number of the last section; A private data area to which pure data is allocated; And a CRC for detecting a transmission error. The sub-picture stream reproduced and separated from the recording medium, that is, the optical disc 1, by using the private section format configured as described above. You can convert and send.

In the apparatus and method for transmitting a sub-image stream of a recording medium according to the present invention as described above, the sub-image stream is converted into a PES format or a private section format by converting a sub-image stream to be reproduced and separated from the recording medium. By optimizing the transmission of the, it is a very useful invention to be able to selectively display a sub-picture screen, such as a subtitle video or a picture in picture (PIP) video in the video display device receiving the sub-picture stream.

1 is a block diagram of an optical disk apparatus and a video display apparatus using a conventional IEEE1394 interface,

2 is a block diagram of a conventional program stream (PS) / transport stream (TS) converter,

3 is a block diagram of an optical disk apparatus and an image display apparatus according to the present invention;

4 is a block diagram of a program stream (PS) / transport stream (TS) converter according to the present invention,

5 is a block diagram of another program stream (PS) / transport stream (TS) converter according to the present invention,

6 shows a conversion process of a data stream according to the present invention,

7 illustrates a PES packet format according to the present invention,

8 illustrates a Run Length data format and a Bit Map data format according to the present invention.

9 illustrates a sub-stream stream transmission table according to the present invention.

10 illustrates a private section format according to the present invention.

※ Explanation of code for main part of drawing

81: packet header decoder 82: Demux

83,84,85: Buffer 86: Additional information generating unit

87: TS Packetizer 88: Interpreter

89: control / compensation unit 90: timing controller

Claims (12)

In the sub-video stream transmission method of the recording medium, Separating the sub-picture stream read from the recording medium; Converting the separated sub-picture stream into a PES data format; And And transmitting the converted sub-picture stream in a run-length data format or a bit-map data format. The method of claim 1, The converted PES data is a sub video stream transmission method of a recording medium, characterized in that the identification information for identifying the sub video stream is included in the stream identifier. The method of claim 1, The converted PES data is, A sub-stream identifier (Sub-stream ID) for distinguishing between the highlight data stream and the sub-picture stream; Partition information for providing partition information of a sub-picture stream; And Sub video stream transmission method of a recording medium, characterized by comprising the image data. The method of claim 3, The video data is a sub-stream stream transmission method of a recording medium, characterized in that the compressed run-length (Length) data format. The method of claim 3, The video data is a sub-image stream transmission method of a recording medium, characterized in that the bit-map data format (Pixel) unit. The method of claim 3, And the image data is composed of palette data or picture data. In the sub-video stream transmission method of the recording medium, Separating the sub-picture stream read from the recording medium; Converting the separated sub-picture stream into a private section format including a table ID; And And transmitting the converted sub-picture stream in a run-length data format or a bit-map data format. In the sub-video stream transmission method of the recording medium, Separating palette data from the recording medium data stream; Extracting a sub-picture stream from the data stream from which the palette data is separated and converting the sub-picture stream into a PES data format; And And transmitting the converted sub-picture stream in a run-length data format or a bit-map data format. The method of claim 8, And transmitting the palette data separated in the step 1 in the format of an async channel (Asynchro-nous). In the sub-video stream transmission method of the recording medium, Converting a recording medium data stream including a sub-picture stream into a PES data format; And 2, which adds an identification code for identifying the sub-picture stream to the data stream converted to the PES data format and transmits it in a run-length data format or a bit-map data format. A sub-video stream transmission method of a recording medium comprising the step of. Separating means for separating the sub-picture stream from the data stream of the recording medium; Converting means for converting the separated sub-picture stream into a PES data format and then transmitting the data to a Run-Length data format or a Bit-Map data format; And And control means for controlling the converting means so that the identification information of the sub-picture stream to be transformed and transmitted is added to the stream. The method of claim 11, And the converting means further comprises a video format converter for converting and reconstructing a video configuration format of the separated sub video stream.