KR100954999B1 - Method for managing and playing addition contents data for high density optical disc - Google Patents

Abstract

The present invention relates to a method for managing and reproducing additional content data of a high density optical disc, wherein the main A / V data of the high density optical disc and additional content data to be synchronously reproduced and additional content data to be asynchronously reproduced are separately recorded, and the main A In the clip information file for controlling playback of / V data and additional content data, stream coding information for the additional content data is recorded and managed, and when the reproduction operation is performed, the additional content data is reproduced in synchronization with the main A / V data. Or by reproducing independent of the main A / V data, the additional content data to be synchronously reproduced with the main A / V data and the additional content data to be asynchronously reproduced on a high-density optical disc such as a playback-only Blu-ray disc (BD-ROM). It is a very useful invention that enables efficient recording management and reproduction control.

Additional Content Data, Play-only Blu-ray Disc, Clip Information File, Stream Coding Information, Stream Coding Type, Stream Packet ID, Arrival Time Stamp

Description

{Method for managing and playing addition contents data for high density optical disc}             

1 shows a file system of a rewritable Blu-ray disc,

2 illustrates an embodiment in which an A / V stream of a rewritable Blu-ray disc, a clip information file, and a playlist are associated with each other.

3 shows a file system of a playback-only Blu-ray disc according to the present invention,

4 schematically shows the volume of a playback-only Blu-ray disc according to the present invention,

5 shows an ally time stamp recorded in a transport packet extra header of a playback-only Blu-ray disc according to the present invention.

6 illustrates the syntax of program information recorded in a clip information file according to the present invention;

7 is a table illustrating stream coding type information according to the present invention.

8 illustrates syntax of stream coding information according to the present invention;                 

9 shows a configuration of an optical disc apparatus to which the additional content data reproducing method according to the present invention is applied.

?? Explanation of symbols for main parts of the drawings

10: ENAV Filter 11: BDAV Demux

12: BDAV buffer 13: ENAV demux

14,15: ENAV buffer 16: controller

17: decoder

The present invention is directed to recording management and reproduction control of various additional content data related to main A / V data on a high-density optical disc such as a reproduction-only Blu-ray Disc-ROM (BD-ROM). A method for managing and reproducing additional content data of a high density optical disc.

In recent years, the standardization of new rewritable high-density optical discs, such as Blu-ray Disc Rewritable (BD-RE), which can record and store high-quality video data and high-quality audio data for a long time, is rapidly progressing. As it progresses, it is expected that related products will be developed and released and commercialized.

On the other hand, the file system of the BD-RE has a 'DVR' directory under the 'Root' directory at the top as shown in FIG. 1, and an 'info.dvr' file under it. , a 'menu.tidx' file and a 'mark.tidx' file, and also a 'PLAYLIST' directory in which a plurality of playlist files (* .rpls, * .vpls) are recorded and a plurality of clip information files (*. The 'CLIPINF' directory where the clpis are recorded and a plurality of clip files corresponding to each clip information file, that is, clip files (* .m2ts) in which an A / V stream of an MPEG2 transport stream method is recorded are recorded. It uses a file structure to hold the 'STREAM' directory to be recorded.                         

Also, reproduction control information for clip files included in the STREAM directory, for example, files '01001.m2ts' and '02000.m2ts', may be recorded as '01001.clpi' and '01001.clpi' recorded in the ClLIP directory. 02000.clpi 'files may be recorded and stored, respectively, and a playlist for determining connection playback and playback order for the' 01001.m2ts' file and the '02000.m2ts' file may be included in the PLAYLIST directory. It can be recorded and saved in the file '01001.rpls'.

 On the other hand, as shown in Fig. 2, the A / V stream recorded and stored in the BD-RE, for example, the Clip A / V stream recorded and stored as a clip file with temporal continuity, is the BD. It is recorded and reproduced by an actual play list (Real PlayList) of RE, a virtual play list (Virtual PlayList) set by user editing, and a clip info file.

therefore. In the optical disc device for reading and playing back an A / V stream recorded and stored on the BD-RE as described above, the A / V is recorded and managed as a clip file by searching for the actual play list, the virtual play list, and the clip information file. A series of playback operations for reading and playing the stream is performed.

Recently, development and standardization of high density optical discs, such as a playback-only Blu-ray disc (BD-ROM), is in progress, and various related to main A / V data recorded and stored on high density optical discs such as the BD-ROM are in progress. Recording and managing additional content data, such as enhanced audio video or enhanced navigation (ENAV) data to be reproduced synchronously with the main A / V data, and additional content data such as ENAV data to be asynchronously reproduced and Since there is not yet a method for controlling reproduction, it is urgently required to prepare a solution.

The present invention was created in view of the above-described circumstances, and provides various additional content data related to main A / V data recorded and stored on a high density optical disc such as a reproduction-only Blu-ray disc (BD-ROM). It is an object of the present invention to provide a method for managing and reproducing additional content data of a high density optical disc for distinguishing between V data and additional content data to be reproduced synchronously and additional content data to be reproduced asynchronously. .

The method for managing additional content data of the high density optical disc according to the present invention for achieving the above object comprises separately recording the main A / V data of the high density optical disc, additional content data to be synchronously reproduced, and additional content data to be asynchronously reproduced. And recording and managing stream coding information for the additional content data in a clip information file for controlling reproduction of the main A / V data and the additional content data.

Further, according to the present invention, the main A / V data of the high density optical disc, additional content data to be synchronously reproduced, and additional content data to be asynchronously reproduced are separately recorded, and the main A / V data and additional content data are recorded. Stream coding information for the additional content data is recorded in a clip information file for controlling playback.

In addition, the method for reproducing additional content data of a high density optical disc according to the present invention comprises: a step of separating main A / V data and additional content data by referring to a packet ID of a data stream read from the high density optical disc; Dividing and storing the separated additional content data into additional content data to be reproduced synchronously with the main A / V data and additional content data to be reproduced asynchronously; And reproducing and outputting the additional content data to be synchronously reproduced in synchronization with the main A / V data, and reproducing and outputting the additional content data to be asynchronously reproduced regardless of the main A / V data. It is characterized by comprising.

Best Mode for Carrying Out the Invention A preferred embodiment of the method for managing and playing additional content data of a high density optical disc according to the present invention will be described in detail with reference to the accompanying drawings.

First, the method for managing and playing additional content data of a high density optical disc according to the present invention can be applied to a disc production process for authoring a high density optical disc such as, for example, a BD-ROM, and also a high density optical disc such as a BD-ROM. The present invention can be applied to an optical disc player or an optical disc recorder for playing back.

On the other hand, the additional content data, for example ENAV data, can be recorded in the form of Mark Up Language (HTML) such as HTML or XHTML, in the method for managing additional content data of a high density optical disc according to the present invention, For example, as shown in FIG. 3, a single clip file is provided by multiplexing the main A / V stream and ENAV content data recorded on a BD-ROM or interleaving the data by a predetermined recording size. In the clip file, only the main A / V stream may be recorded, or only the ENAV stream may be recorded, and the main A / V stream and the ENAV stream may record data of a BD-ROM. Recording is carried out as a clip file (* .m2ts) of an MPEG2 Transport stream that matches the format.

In addition, navigation files for searching and reproducing ENAV data recorded and managed by a clip file (* .m2ts) of the MPEG2 transport stream through a user interface or the like may be recorded as' The recording management is performed in a specific directory newly added separately from the STREAM 'directory, for example, in the' ENAVNAVI 'directory as shown in FIG.

The navigation file may be associated with at least one of a playlist (PlayList), a play item (PlayItem), and a clip information file (* .clpi) for controlling playback of the clip file in which the ENAV data is recorded. Link information and data in an XHTML format may be recorded, and the XHTML data may be recorded as Markup Language for start up data. The navigation file may be recorded and managed as '* .mls'.

In the 'ENAVNAVI' directory, a Start Up Menu file for generating and displaying a menu of each object image corresponding to the navigation files (* .mls), for example, 'startupmenu.enav' The file is recorded and managed, and the start-up menu file is for outputting and displaying an image of a browser screen, which is outputted or displayed by a user's key input or a system control operation on an optical disk device, for example, playback. When the initial operation is performed, the output may be automatically displayed.

In addition, in the navigation information of the clip information file (* .clpi) associated with the clip file (* .m2ts), the ENAV stream recorded in the clip file is an ENAV stream to be synchronously reproduced with the main A / V stream, or Stream coding type (stream_coding_type) information for identifying whether the ENAV stream to be asynchronously reproduced regardless of the main A / V stream is recorded.

As shown in FIG. 4, a disc volume of a BD-ROM according to the present invention includes a file system information area, a database area, and a data stream. The data stream area may be logically divided, and navigation information and play list information for controlling reproduction of an ENAV stream are recorded in the file system information area, and a clip information file is recorded in the database area. In the data stream area, only the clip file in which only the main A / V stream is recorded, the clip file in which the main A / V stream and the ENAV stream are recorded together, and the ENAV stream can be recorded and stored.

Meanwhile, as described above, the ENAV stream may be multiplexed or interleaved with the main A / V stream and recorded as an MPEG2 transport stream. The main A / V stream and the ENAV stream may be, for example, illustrated in FIG. 6. As shown in FIG. 6, a source packet arranged in 6144 byte units corresponding to three sectors (3 × 2048) and having a recording size of 192 bytes includes a 4-byte TP extra header and 188 bytes. It consists of a transport packet of bytes.

In addition, 30 bits of the TP extra header are an Arrival Time Stamp (ATS) for synchronizing main A / V data and ENAV data, and the ENAV stream is synchronized with the main A / V stream. When playing back, record a valid value, and when playing back asynchronously, record an invalid value, for example, a value of '0' in all 30 bits, so that the ENAV to be played back synchronously or asynchronously with the main A / V stream. Separate streams are recorded.

In addition, the decoding time stamp (DTS) or the presentation time stamp (PTS) that is additionally recorded in the ENAV stream is recorded as a valid value or a non-valid value such as '0'. By recording, the ENAV stream to be synchronously reproduced or asynchronously reproduced from the main A / V stream may be separately recorded.

Meanwhile, as illustrated in FIG. 6, program information (ProgramInfo) is recorded in a clip information (ClipInfo) file associated with a clip file in which the main A / V stream and the ENAV stream are recorded. The program information includes a stream packet ID (stream_PID) and stream coding information (StreamCodingInfo). The packet ID corresponding to the ENAV stream among the stream packet IDs (stream_PID) corresponds to, for example, the main A. A unique packet ID (PID) distinguished from the / V data is additionally recorded in a 16-bit recording size.

In addition, a video stream (MPEG-2 video stream), an audio stream (HDMV LPCM audio stream, Dobly Ac-3 audio stream, dts audio stream), and a subtitle graphics stream recorded on the BD-ROM are provided. A stream coding type of a new value distinguished from the graphics streams is assigned to the ENAV stream. As shown in FIG. 7, an ENAV stream to be reproduced synchronously with the main A / V stream is shown in FIG. ), A stream coding type of '0x92' is assigned, and a stream coding type of '0x93' is separately assigned to an ENAV stream (Non-synchronous ENAV stream) to be asynchronously reproduced.

In the stream coding information, as shown in FIG. 8, an ENAV coding type or the like for reproducing and controlling an ENAV stream (Sync_ENAV) to which a stream coding type of '0x92' is assigned is recorded. The stream of '0x93' is recorded. Since an ENAV coding type or the like for recording and controlling an ENAV stream (Non-sync_ENAV) to which a coding type has been assigned is recorded and recorded, in the optical disk device, the main A / V stream and the ENAV stream are searched and referred to for the information managed as described above. It is possible to perform a series of playback control operations for synchronous playback or asynchronous playback, which will be described in detail as follows.

Fig. 9 shows a configuration of an optical disk apparatus to which the method for reproducing additional content data of a high density optical disk according to the present invention is applied. The optical disk apparatus includes an ENAV filter 10, a BDAV demux 11, and a BDAV buffer ( 12), the ENAV demux 13, the first and second ENAV buffers 14 and 15, the controller 16, the decoder 17 and the like can be configured, in the ENAV filter 10, The packet ID of the MPEG2 transport stream read out from the BD-ROM is searched for, and the main A / V stream and the ENAV stream are output separately.

For example, as described above with reference to FIG. 6, when the stream packet ID (stream_PID) having the 16-bit recording size corresponds to the stream packet ID (ENAV_PID) of the ENAV, the ENAV stream is stored in the ENAV demux ( 13), when the stream packet ID corresponds to the main A / V stream, the main A / V stream is output to the BDAV demux 11 separately.

Meanwhile, the main A / V stream separated and output as described above is demuxed into audio, video and subtitle data by the BDAV demux 11, and temporarily stored in the BDAV buffer 12, and separated The output ENAV stream is separately outputted by the ENAV demux 13 into an ENAV stream to be synchronously reproduced with the main A / V stream and an ENAV stream to be asynchronously reproduced. In the ENAV demux 13, an example is provided. For example, if all 30-bit values of the 4-byte TP extra header additionally recorded in the 188-byte transport packet (TP) are recorded as '0', it is determined that the ENAV stream (Non-sync_ENAV) to be asynchronously reproduced. After that, the ENAV stream to be asynchronously reproduced is output to the second ENAV buffer 15 and temporarily stored. If it is recorded as a valid value other than the 30-bit value, it is determined that the ENAV stream to be synchronously reproduced is an ENAV stream (Sync_ENAV). After, The ENAV stream to be synchronously reproduced is output to the first ENAV buffer 14 to be temporarily stored.                     

In addition, the main A / V stream temporarily stored in the BDAV buffer 12 is output to the decoder 17 to reproduce and output audio, video and subtitles corresponding to the main A / V data. In the controller 16, an allotted time stamp (ATS) recorded in the audio, video and subtitle data reproduced and output as described above, and the earmark additionally recorded in the ENAV data temporarily stored in the first ENAV buffer 14 The rival time stamp (ATS) is compared and referenced, and the decoder 17 outputs and controls the ENAV stream to be synchronously reproduced with the main A / V stream.

The ENAV stream temporarily stored in the second ENAV buffer 15 is read out and output to the decoder 17 by an event such as a user's key input, a chapter change, or an external interface. The ENAV stream to be reproduced is reproduced and synchronously outputted in association with the main A / V stream, and the ENAV stream to be reproduced is asynchronously reproduced and outputted regardless of the main A / V stream.

For reference, when the ENAV stream to be synchronously reproduced and the ENAV stream to be asynchronously reproduced are recorded separately by a decoding time stamp (DTS) or a presentation time stamp (PTS) instead of an arrival time stamp (ATS), the ENAV demux In 13, the ENAV stream to be synchronously reproduced and the ENAV stream to be asynchronously reproduced are separately outputted by searching and referring to the decoding time stamp or the presentation time stamp additionally recorded in the ENAV stream. In the controller 16, the main A series of playbacks in which the ENAV stream temporarily stored in the first ENAV buffer 14 is synchronously reproduced with the main A / V stream by searching and referring to a decoding time stamp or a presentation time stamp additionally recorded in the A / V stream and the ENAV stream. The control operation is performed.

As mentioned above, preferred embodiments of the present invention are disclosed for purposes of illustration, and those skilled in the art can improve and change various other embodiments within the spirit and technical scope of the present invention disclosed in the appended claims below. , Replacement or addition would be possible.

According to the present invention, there is provided a method for managing and playing additional content data of a high density optical disc, wherein the main A / V data of the high density optical disc and additional content data to be synchronously reproduced and additional content data to be asynchronously reproduced are separately recorded. In the clip information file for controlling reproduction and playback of the main A / V data and the additional content data, the stream coding information for the additional content data is recorded and managed, and the additional content data is synchronized with the main A / V data when the reproduction operation is performed. The additional content data to be played back synchronously with the main A / V data and the additional content to be played back asynchronously on a high-density optical disc such as a playback-only Blu-ray disc (BD-ROM). Very useful invention that enables efficient recording management and playback control of data Will.

Claims (22)

The main A / V data of the optical disc and the additional content data to be reproduced synchronously and the additional content data to be asynchronously reproduced are separately recorded, In the clip information file for controlling reproduction of the main A / V data and the additional content data, stream coding information of the additional content data is recorded and managed. The additional content data management method of the optical disc, characterized in that additional stream packet IDs distinguished from the main A / V data are additionally recorded in the additional content data. The method of claim 1, An ally time stamp, a decoding time stamp, or a presentation time stamp of the additional content data to be synchronously reproduced is recorded as a valid value synchronized with an ally time stamp, a decoding time stamp, or a presentation time stamp of the main A / V data. And additional content data management method for an optical disc. The method of claim 1, The additional content data of the optical disc, wherein an ally time stamp, a decoding time stamp, or a presentation time stamp of the additional content data to be asynchronously reproduced is recorded at an invalid value which is not related to the main A / V data. How to manage. The method of claim 1, And additional stream coding type information corresponding to the additional content data to be synchronously reproduced and the additional content data to be asynchronously reproduced are recorded in the stream coding information. The method of claim 1, The optical disc is a reproduction-only Blu-ray disc (BD-ROM), and the main A / V data and additional content data are recorded in an MPEG2 transport stream. delete The main A / V data of the optical disc, the additional content data to be synchronously reproduced, and the additional content data to be asynchronously reproduced are recorded separately, Stream coding information for the additional content data is recorded in a clip information file for controlling reproduction of the main A / V data and additional content data. And the unique stream packet ID distinguished from the main A / V data is additionally recorded in the additional content data. The method of claim 7, wherein A valid value synchronized with an alligator time stamp, a decoding time stamp, or a presentation time stamp of the main A / V data is recorded in an ally time stamp, a decoding time stamp, or a presentation time stamp of the additional content data to be synchronously reproduced. An optical disc, characterized in that. The method of claim 7, wherein And a non-valid random value irrelevant to the main A / V data is recorded in an alligator time stamp, a decoding time stamp, or a presentation time stamp of the additional content data to be asynchronously reproduced. The method of claim 7, wherein And the unique stream coding time information corresponding to the additional content data to be reproduced synchronously and the additional content data to be reproduced asynchronously in the stream coding information. The method of claim 7, wherein The optical disc is a reproduction-only Blu-ray disc (BD-ROM), and the main A / V data and additional content data are recorded in an MPEG2 transport stream. delete Searching for a packet ID of a data stream read from the optical disc, and separating the main A / V data and the additional content data; Dividing and storing the separated additional content data into additional content data to be reproduced synchronously with the main A / V data and additional content data to be reproduced asynchronously; And Reproducing and outputting the additional content data to be synchronously reproduced in synchronization with the main A / V data, and reproducing and outputting the additional content data to be asynchronously reproduced regardless of the main A / V data. By the way, In step 3, the additional content data to be synchronously reproduced is compared with an ally time stamp, a decoding time stamp, or a presentation time stamp of the main A / V data to synchronize the additional content data with the main A / V data. And reproducing and outputting additional content data of an optical disc. The method of claim 13, In the first step, the main disk A / V data having different stream packet IDs and the additional content data are separated by referring to the packet IDs of the MPEG2 transport streams read from the reproduction-only Blu-ray disc. How to play content data. The method of claim 13, In the second step, the separated main A / V data is separately stored as audio, video and subtitle data, and the validity of an align time stamp, a decoding time stamp, or a presentation time stamp of the separated additional content data is stored. And classifying and storing the main A / V data into additional content data to be synchronously reproduced and additional content data to be asynchronously reproduced. delete The method of claim 13, In step 3, the additional content data to be reproduced asynchronously is reproduced and output irrespective of the main A / V data by at least one of a user key input, a chapter change, or an external interface. How to play content data. Separating means for retrieving the packet ID of the data stream read from the optical disc, and separating the main A / V data and the additional content data; Storage means for separately storing the separated additional content data into additional content data to be reproduced synchronously with the main A / V data and additional content data to be reproduced asynchronously; And Playback means for reproducing and outputting the additional content data to be synchronously reproduced in synchronization with the main A / V data and for reproducing and outputting the additional content data to be asynchronously reproduced independently of the main A / V data; Including but not limited to The playback means compares the additional content data to be synchronously reproduced with an alligator time stamp, a decoding time stamp, or a presentation time stamp of the main A / V data to synchronize the additional content data with the main A / V data. Apparatus for reproducing additional content data of an optical disc, characterized by outputting reproduction The method of claim 18, The separating means separates the main A / V data and the additional content data having different stream packet IDs by referring to the packet IDs of the MPEG2 transport stream read out from the reproduction-only Blu-ray disc. Content data playback device. The method of claim 18, The storage means separately stores the separated main A / V data into audio, video, and subtitle data, and also validates an elimination time stamp, decoding time stamp, or presentation time stamp of the separated additional content data. And additionally storing the main A / V data into additional content data to be synchronously reproduced and additional content data to be asynchronously reproduced. delete The method of claim 18, And the reproducing means reproduces and outputs the additional content data to be asynchronously reproduced regardless of the main A / V data by at least one of a user key input, a chapter change, or an external interface. Content data playback device.

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