KR100389863B1 - Recording medium with data structure capable of reproducing sub-title with regard to title, reproducing apparatus and method thereof - Google Patents

Abstract

The present invention relates to a recording medium having a data structure that can be reproduced in association with a subtitle, a reproduction apparatus and a reproduction method thereof.

According to the present invention, a recording medium includes: a title including audio data and / or video data; At least one subtitle provided to correspond to the title and including at least one subfile and configured by combining the subfiles; And link information of the title of the subtitle, including the reproduction time information of the subtitle and a file name of the subfile. As a result, the subtitle which is completed by combining various types of data such as text data and video data as well as graphic data can be reproduced in association with the corresponding title.

Description

Recording medium having reproducible data structure in association with subtitle, reproducing apparatus and method for reproducing sub-title with regard to title, reproducing apparatus and method

The present invention relates to a recording medium on which a title containing audio data and / or video data is recorded, a reproduction apparatus and a reproduction method thereof, and more particularly, to reproduce a subtitle including additional data related to the title in association with the title. The present invention relates to a recording medium, a reproducing apparatus, and a reproducing method recorded in a data structure.

Conventional Digital Versatile Disc (DVD) video includes video data, audio data and sub-picture data as presentation data. Sub-picture data is additional data for reproduction in association with video data and / or audio data. That is, the user can provide various selection functions such as subtitle conversion of a movie, menu function, etc. through a unique data format called sub-picture data.

Thus, in order for a DVD to interface with a D-TV or HDTV, the signal output from the DVD must be converted back into a bitstream of a data structure that the D-TV or HDTV can interpret and present. In other words, the decoded video data and the decoded sub-picture data must be superimposed so that complete moving picture data is formed and then encoded into MPEG2 video data. As such, in order to interface DVD to D-TV or HDTV, hardware for re-encoding to MPEG2 video data must be separately provided, and deterioration of image quality due to re-encoding process is caused.

Moreover, conventional sub-picture data defines only graphic data. Accordingly, there is a problem in that additional data, which is completed by combining various types of data such as text data or moving image data, is not provided with contents reproduced in association with audio data and / or video data.

Accordingly, an object of the present invention is to provide a recording medium, a reproducing apparatus, and a reproducing method recorded in a data structure that can be interpreted and presented by a D-TV or HDTV.

It is another object of the present invention to provide a recording medium in which a data structure capable of reproducing in association with audio data and / or video data can be reproduced in association with audio data and / or video data. A reproducing apparatus and a reproducing method are provided.

1 is a reference diagram for explaining a data structure recorded on an optical disc according to a first embodiment of the present invention;

2 is an example of a data structure of a subtitle of FIG. 1;

3 is an example of displaying a subtitle,

4 is an example of link information recorded on an optical disc of FIG. 1;

5 is a reference diagram for explaining a logical connection relationship between a subtitle manager and a subtitle of FIG. 4;

6 is a reference diagram for explaining a connection relation between a title and a playback time of a subfile;

7 is a reference diagram for explaining a data structure recorded on an optical disc according to a second embodiment of the present invention;

8 is an example of a data structure of the superfile of FIG. 7;

9 is an example of link information recorded on an optical disc of FIG. 7;

10 is a reference diagram for explaining a logical connection relationship between a subtitle manager and a superfile of FIG. 9;

11 is a reference diagram for explaining a connection relationship between a title and a superfile at the time of reproduction;

12 is a block diagram of a reproducing apparatus 1 for reproducing a recording medium according to the present invention;

FIG. 13 is a detailed block diagram of the playback device 1 of FIG. 12;

14 is a flowchart for explaining a reproducing method of reading and reproducing data from a recording medium according to the present invention;

FIG. 15 is a flowchart for describing operation 1404 of FIG. 14.

* Description of the major symbols in the drawings

1: Playback device 10: Optical disc

11: user interface 12: pickup section

13: Servo unit 20: system control unit

21: memory 30: display device

31: Storage 201: File System

202: memory controller 203,303: timer

204,304: transmission module 302: storage controller

The object is according to the invention a title comprising audio data and / or video data; At least one subtitle provided to correspond to the title and including at least one subfile and configured by combining the subfiles; And link information for the title of the subtitle, including reproduction time information of the subtitle and a file name of the subfile.

Here, it is effective that the corresponding subfile constituting the subtitle is continuously recorded.

The link information further includes a file name of a subfile serving as an entry point for calling the subfile, and the play time information includes play start time information and play duration time information of the subtitle, or play back the subtitle. It is preferable to include start time information and reproduction end time information.

The subfile may include a text file or may further include an image file or a video file.

On the other hand, according to another field of the present invention, the above object is, the title including audio data and / or video data; A superfile concatenated with at least one subfile for combining at least one subtitle; And link information for the title of the superfile is recorded so that the subtitle can be reproduced in association with the title.

Here, it is effective that the corresponding subfile constituting the subtitle is continuously recorded.

The link information includes a subtitle manager in which a file name of the superfile, position information in the superfile of the subfile, and reproduction time information of the subtitle are recorded;

The subtitle manager may further include subfile information serving as an entry point for calling the subfile.

The subtitle manager may include a subtitle table provided to correspond to the subtitle, and a subtitle management table for managing the subtitle table.

The subtitle management table includes a subtitle table pointer indicating a file name of the superfile, the number of subtitles, and a location of the subtitle table.

The subtitle table includes the position information and the reproduction time information.

More specifically, the subtitle table includes a subfile table arranged to correspond to a corresponding subfile and a subfile management table for managing the subfile table, and the subfile management table includes: calling the subfile. It further includes subfile information serving as an entry point.

The location information of the subfile in the superfile includes location information of the subtitle in the superfile, and location information of the subfile in the subtitle.

The location information of the subtitle in the superfile may include the offset value of the subtitle, the size information of the subtitle, the number of the subfiles, and the size of the subfile.

The play time information may include play start time information and play duration time information of the subtitle.

On the other hand, according to another field of the present invention, the above object is achieved from a recording medium having recorded thereon a superfile having a title including audio data and / or video data and at least one subtitle connected to the title for reproduction. A method of reproducing data, the method comprising: (a) reading at least one subfile constituting a subtitle corresponding to a selected title from the superfile; And (b) reproducing the read subfile in association with the selected title.

Step (a) may include: (a1) searching for a corresponding subtitle in the superfile by referring to offset values and size information of the corresponding subtitle; And (a2) extracting the subfile by referring to the number and size information of the corresponding subfile in the searched subtitle,

Step (b) may include: (b1) combining the read subfiles to complete a corresponding subtitle; And (b2) reproducing the completed subtitle in synchronization with the title.

In the step (b1), it is preferable to complete the subtitle by first opening an entry subfile among the extracted subfiles, opening the remaining subfiles linked to the entry subfile, and combining them with the opened entry subfile. In the step (b2), the subtitle is displayed together with the title at a predetermined playback start time and the display of the subtitle is continued for a predetermined playback duration.

The subfile may include a text file or may further include an image file or a video file.

On the other hand, according to another field of the present invention, the above object is achieved from a recording medium having recorded thereon a superfile having a title including audio data and / or video data and at least one subtitle connected to the title for reproduction. In the playback apparatus for reproducing data,

Extracting means for extracting at least one subfile constituting a subtitle corresponding to a selected title from the superfile; And transmitting means for transmitting the subfile extracted by the extracting means to a display apparatus for reproducing in association with the selected title.

The extracting means searches for the corresponding subtitle in the superfile by referring to the offset value and the size information of the corresponding subtitle, and searches the subfile by referring to the number and size information of the corresponding subfile in the found subtitle. Control means for; And reading means for reading the subfile searched by the control means.

The extracting means further includes storage means for storing the subfile read by the reading means, and the transmitting means transmits the subfile stored in the storage means to the display apparatus.

It is more preferable that the display apparatus combines the read subfiles to complete the corresponding subtitles, and reproduces the completed subtitles in synchronization with the title. To this end, the display apparatus completes the subtitle by first opening an entry subfile among the extracted subfiles, opening the remaining subfiles linked to the entry subfile, and then combining the entry subfile with the opened entry subfile. It is particularly preferable to display the subtitle together with the title at a predetermined playback start time and to continue displaying the subtitle for a predetermined playback duration.

The subfile preferably includes a text file or further includes an image file or a video file.

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

1 is a reference diagram for explaining a data structure recorded on an optical disc according to a first embodiment of the present invention.

At least one title and a plurality of subtitles are recorded on the optical disc. Referring to Fig. 1, two titles and a plurality of subtitles corresponding to each title are recorded. Titles and subtitles are logical data units in accordance with the present invention. A title is an AV (Audio Video) bitstream in which audio data and / or video data is recorded as digital data. The subtitle includes data to be displayed in association with the title at some point during the reproduction of the title. Therefore, at least one subtitle corresponds to each title. The data structure of the subtitle is described later.

In addition, navigation information (not shown) necessary for reproducing titles and subtitles is recorded on the optical disc. The navigation information includes brief introduction information about the title / subtitle recorded on the optical disc, and link information for reproducing the title / subtitle. Link information will be described later.

On the other hand, device control data (not shown) recorded in the optical disk is required for the operation of the playback apparatus described later. The reproducing apparatus is operative to reproduce the contents recorded on the optical disc in accordance with the device control data as intended by the recorder. For example, the device control data is used to determine whether the title recorded on the optical disc is video data such as a movie or audio data such as classical music. In addition, if the title is a movie, the size of the video to be reproduced, the data transmission rate, and the like are determined through the device control data, and the operation is performed to correspond to the identified information.

FIG. 2 is an example of a data structure of a subtitle of FIG. 1. However, for simplicity, only the subtitle # 1 to subtitle #N corresponding to the title # 1 of FIG. 1 will be described. The remaining title # 2 and the corresponding subtitles # 1 to subtitle #M have the same structure.

Each subtitle includes at least one subfile. Subfiles included in each subtitle are combined with each other to represent one subtitle. Referring to FIG. 2, the subtitle # 1 has subfiles # 1 to #K. That is, subfiles # 1 to #K combine to represent subtitle # 1 as one complete document. In practice, this is the case where a graphic file and a text file are combined to display a subtitle of a movie as graphics and text.

3 is an example of displaying a subtitle.

Referring to FIG. 3, if the subfile corresponding to the subtitle is a.xml, b.bmp, c.jpg, the subtitle is displayed by a combination of a.xml, b.bmp, and c.jpg. That is, b.bmp and c.jpg are called with a.xml and displayed together with a.xml. Here, a.xml is an XML (eXtensible Markup Language) document which is one of the derivatives of Standard Generalized Markup Language (SGML), which is a markup language. Here, other markup languages such as HTML documents may be used instead of XML. Meanwhile, b.bmp is a graphic file and c.jpg is a video file.

4 is an example of link information recorded on the optical disk of FIG.

Referring to FIG. 4, the link information includes a subtitle manager so that subtitles can be displayed in association with a corresponding title.

The subtitle manager is for providing reference information in which a subfile can be reproduced in synchronization with a title and has a subtitle management table and at least one subtitle table.

The subtitle management table includes at least one subtitle table pointer indicating the number of subtitles and the location of the subtitle table as management information for at least one subtitle.

The subtitle table is provided to correspond to each subtitle. The subtitle table has a subfile management table and at least one subfile table for managing a subfile for indicating a corresponding subtitle.

The subfile management table is management information for managing the corresponding subfile, and includes the number of the corresponding subfiles, at least one subfile table pointer indicating the position of the subfile table, the file name of the entry subfile, and the reproduction time information of the subtitle. Include. Here, the entry subfile is the first subfile called among a plurality of subfiles to indicate a subtitle. Referring to FIG. 3, a.xml corresponds to this. In other words, an entry subfile means a file corresponding to index.htm in a website. In addition, the reproduction time information of the subtitle may be displayed as a reproduction start time and a reproduction end time of the subtitle, or may be displayed as a reproduction start time and a reproduction duration. The subfile for displaying the subtitle with reference to the reproduction time information can be reproduced in synchronization with the corresponding main file at a predetermined time point.

The subfile table has a file name for calling the corresponding subfile.

5 is a reference diagram illustrating a logical connection relationship between a subtitle manager and a subtitle of FIG. 4.

Referring to FIG. 5, a subtitle management table is first located in a subtitle manager. The subtitle management table manages three subtitles, and has subtitle table pointers TP # 1, TP # 2, and TP # 3 pointing to the start positions of the three subtitle tables. Subtitle table 1 is located after the subtitle management table. Subtitle table 1 corresponds to subtitle 1. More specifically, the subfile management table included in the subtitle table 1 has four subfiles for indicating corresponding subtitles, and has a subfile table pointer SP indicating four subfile tables for this purpose. The subfile table pointer points to the subfile tables T # 1, T # 2, T # 3, and T # 4, respectively. T # 1, T # 2, T # 3, and T # 4 correspond to subfile # 1, subfile # 2, subfile # 3, and subfile # 4, respectively. Subfile # 1, subfile # 2, subfile # 3, and subfile # 4 are combined to represent subtitle 1.

6 is a reference diagram for explaining a connection relation between a title and a playback time of a subfile.

Referring to Fig. 6, when title # 1 indicated by the AV bitstream corresponds to the playback time axis, the corresponding subtitles # 1 to subtitle #N correspond to an arbitrary time point on the playback time axis. Subtitle # 1 is displayed with a combination of subfiles # 1, # 2, and # 3, subtitle #n is displayed with a combination of subfile #k, subfile # k + 1, and subfile # k + 2. It can be seen that the subtitle #N is displayed by combining the subfile # K-1 and the subfile #K.

7 is a reference diagram for explaining the data structure recorded on the optical disc according to the second embodiment of the present invention.

At least one title and at least one superfile are recorded on the optical disc. Referring to Fig. 7, one title and one super file are recorded. Title and superfile are logical data units in accordance with the present invention. Here, a plurality of superfiles may be provided to have an appropriate size as needed. The title refers to an AV (Audio Video) bitstream in which audio data and / or video data is recorded as digital data, similar to that of FIG. A super file is a file in which a plurality of subfiles are connected in a row. The detailed structure of the superfile will be described later.

In addition, navigation information (not shown) is recorded on the optical disc to associate and reproduce the title and the superfile. The navigation information includes brief introduction information about the title / subtitle recorded on the optical disc, and link information for reproducing the title / subtitle. Link information will be described later.

On the other hand, device control data (not shown) recorded in the optical disk is required for the operation of the playback apparatus described later. The reproducing apparatus is operative to reproduce the contents recorded on the optical disc according to the device control data as intended by the recorder. For example, the device control data is used to determine whether the title recorded on the optical disc is video data such as a movie or audio data such as classical music. In addition, if the title is a movie, the size of the video to be reproduced, the data transmission rate, and the like are determined through the device control data, and the operation is performed to correspond to the identified information.

8 is an example of a data structure of the superfile of FIG. 7.

Referring to FIG. 8, the superfile includes subtitles # 1 to #L. Subtitle # 1 includes subfile # 1 through subfile #T. Similarly, subtitles # 2 to #L also include at least one subfile. In this way, the superfile is constructed by recording all the subfiles for displaying the subtitles to be reproduced in association with Title # 1 in a row. Meanwhile, the subfiles # 1 to #T are combined as shown in FIG. 3 to display the subtitle # 1. Each subfile included in the subtitles # 2 to #L is similarly combined to indicate the corresponding subtitle.

The meaning of superfile is as follows. That is, the number of subfiles for displaying subtitles reproduced in synchronization with one title depends on the size of the title and the intention of the content provider. For example, if two subtitles correspond to six subtitles per minute and each subtitle consists of two subfiles, then the number of subfiles corresponding to the title is two hours * 60 minutes * 6 * 2 = 1440. When 1440 files are recorded as files having independent file names, the recording space may be wasted due to overhead due to the characteristics of the file system that is recorded in a recording unit having a predetermined size. Therefore, when the number of subfiles is large and the size of each file is less than the size of the recording unit, it may be efficient to access the subfile through the superfile.

9 is an example of link information recorded on the optical disk of FIG.

Referring to FIG. 9, the link information includes a subtitle manager so that subtitles can be displayed in association with a corresponding title.

The subtitle manager is for providing reference information in which a subfile included in the superfile can be reproduced in synchronization with a title, and has a subtitle management table and at least one subtitle table.

The subtitle management table includes subtitle table pointers indicating the file name of the superfile, the number of subtitles to be managed, and the location of the subtitle table as management information for managing the subtitle. Here, the number of subtitle table pointers is the same as the number of subtitles.

The subtitle table is provided to correspond to each subtitle. The subtitle table has a subfile management table and at least one subfile table for managing a subfile for indicating a corresponding subtitle.

The subfile management table is management information for managing the corresponding subfile, an offset value indicating the position of the corresponding subtitle, size information of the subtitle, number information of the corresponding subfile, file name of the entry subfile, and reproduction of the subtitle. Start time and playback duration. Here, the entry subfile is the first subfile displayed among the plurality of subfiles to indicate the subtitle. Referring to FIG. 3, a.xml corresponds to this. Also, the playback start time and playback duration of the subtitle can be replaced with the playback start time and playback end time. The subtitle can be reproduced in synchronization with a predetermined time point of the corresponding title with reference to the reproduction start time and the reproduction duration.

The subfile table has file name of subfile and size information of subfile.

FIG. 10 is a reference diagram for explaining a logical connection relationship between a subtitle manager and a superfile of FIG. 9.

Referring to FIG. 10, a subtitle management table is first located in a subtitle manager. The subtitle management table manages two subtitles. For this purpose, the subtitle management table has subtitle table pointers TP # 1 and TP # 2 respectively pointing to the start positions of the two subtitle tables. Subtitle table 1 is located after the subtitle management table. The subtitle table 1 includes a subfile management table having an offset value indicating the start position of the corresponding subtitle and the size of the subtitle. The subfile management table manages three subfiles, for which the subfile table pointer TP points to three subfile tables. The subfile table pointer points to the subfile tables T # 1, T # 2, and T # 3, respectively. The subfile tables T # 1, T # 2, and T # 3 correspond to subfile # 1, subfile # 2, and subfile # 3, respectively.

11 is a reference diagram for explaining a connection relationship between a title and a superfile at the time of reproduction.

Referring to Fig. 11, when title # 1 indicated by the AV bitstream corresponds to the playback time axis, the corresponding subtitles # 1 to subtitle #N correspond to an arbitrary time point on the playback time axis. Subtitle # 1 is displayed with a combination of subfiles # 1, # 2, and # 3, subtitle #l is displayed with a combination of subfile #t, subfile # t + 1, and subfile # t + 2. It can be seen that the subtitle #L is displayed by combining the subfile # T-2, the subfile # T-1, and the subfile #T. That is, at least one subfile is combined to display a subtitle, and the displayed subtitle is displayed together with the corresponding title at a specific time point.

12 is a block diagram of a reproducing apparatus 1 for reproducing a recording medium according to the present invention.

Referring to FIG. 12, the playback device 1 includes a user interface 11, a pickup part 12, a servo part 13, a system control part 20, a memory 21, a display device 30, and storage. 31 is provided.

When a user's operation command is input through the user interface 11, the servo unit 13 receiving the control command of the system controller 20 servo-controls the pickup unit 12. Thus, the pickup unit 12 reads out the data recorded on the optical disc 10. According to the present invention, the system control unit 20 stores the subtitle manager read from the area in which the reproduction control information is recorded, and the subfile read from the data area in the memory 21, and is extracted with reference to the subtitle manager. The subfile is read and transmitted to the display device 30. The subfile extracted here is a subfile constituting a subtitle to be reproduced in synchronization with a title at a predetermined time. Next, the system controller 20 transmits the read title to the display device 30. Titles and subfiles are subjected to appropriate amplification, decoding, and error correction processes prior to delivery to the display device 30. The display device 30 plays back the title and subfile transmitted from the system control unit 20. That is, the display device 30 displays the text data 42 to be reproduced together with the A / V data 50 using the subfont data transferred from the system controller 20.

On the other hand, the playback device 1 of FIG. 2 includes a display device 30, but the playback device may be configured to exclude the display device 30, the storage 31, and the necessary user interface 11.

FIG. 13 is a detailed block diagram of the playback apparatus 1 of FIG. 12.

Referring to FIG. 13, the system controller 20 includes a file system 201, a timer 203, a transfer module 204, and a memory controller 202. The file system 201 attaches file names to digital data recorded on the optical disc 10, and manages where to logically place them for storage or retrieval. The memory controller 202 controls the memory 21 to allow the memory 21 to accept or export data. The timer 203 continuously generates a reference clock value for the operation of the system controller 20. The transmission module 204 allows data or a control signal from the system controller 20 to be transmitted to the display device 30.

The display device 30 includes a storage controller 302, a timer 303, and a transmission module 304. The storage controller 302, like the memory controller 202, controls to write data to or read data from the storage 31. The timer 303 continuously generates a reference clock value for the operation of the display controller provided in the display apparatus 30. The transmission module 304 receives a title transmitted from the system control unit 20, that is, each subtitle composed of an AV bitstream and at least one subfile, and exchanges control signals with the system control unit 20. The system controller 20 and the display device 30 are synchronized by the timers 203 and 303.

On the other hand, the memory 21 stores the subtitle manager extracted from the optical disc and the N subfiles according to the present embodiment. In the case of the optical disc according to the first embodiment, since the subfile is stored with the file name, it is called and stored with the file name recorded in the subfile table. In the second embodiment, since the subfile is included and stored in the superfile, the file name recorded in the subfile table is stored in the subfile extracted by referring to the subfile management table and the subfile table.

The storage 31 stores subfiles transmitted from the system controller 20 according to the present embodiment.

Referring to the reproduction method according to the present invention by the above configuration as follows.

14 is a flowchart for explaining a reproducing method of reading and reproducing data from a recording medium according to the present invention.

Referring to FIG. 14, when the optical disc according to the present embodiment is inserted into the playback device 1 or power is applied, the system control unit 20 supplies the introductory information and link information recorded on the optical disc through the file system 201. The menu screen is displayed based on this. If the user requests reproduction of a predetermined title from the displayed menu, the system control unit 20 refers to the subtitle manager to read the super file linked to the read title (step 1401).

The system controller 20 refers to the subtitle manager, searches for the subtitle linked to the title from the read superfile (step 1402), and reads the subfile constituting the searched subtitle (step 1403).

Next, the system controller 20 reads the selected title (step 1403). Subsequently, the playback apparatus 1 plays the read subfile in association with the title (step 1404).

Here, the execution order of the step 1403 for reading the title is independent of the other steps and can be variously changed as necessary.

FIG. 15 is a flowchart for describing operation 1404 of FIG. 14.

Referring to FIG. 15, the system controller 20 searches for the corresponding subtitle from the superfile by referring to the offset value and the size information of the subtitle recorded in the subtitle manager (step 1501).

In addition, the system controller 20 extracts the subfile from the searched subtitle with reference to the number and size information of the corresponding subfile recorded in the subtitle manager (step 1502).

Next, the system control unit 20 extracts the corresponding title (step 1503).

The display apparatus 30 completes the subtitle by combining the subfiles extracted in step 1502 (step 1504), and reproduces the completed subtitle in synchronization with the title extracted in step 1503 (step 1505).

Similarly, since the execution order of step 1403 for reading a title is independent of other steps, it can be variously changed as necessary.

The reproduction method described with reference to FIGS. 14 and 15 will now be described in more detail.

The system control unit 20 reads the file name of the super file corresponding to the requested title by referring to the subtitle management table and opens the super file. At this time, the user can input the reproduction start time information of the corresponding title, whether to play from the beginning or the middle part. The system controller 20 compares the playback start time information input from the user with the playback time information recorded in the subtitle table, and finds a subtitle corresponding to the playback start time requested by the user. Next, with reference to the subfile management table and the subfile table, the subfile belonging to the found subtitle is extracted and recorded in the memory 21. When the subfile is recorded in the memory 21, since the subfile is recorded with the file name in the first embodiment, it is written as it is (with the original file name). In the second embodiment, the subfile is included in the superfile. Then, the extracted subfile is recorded by appending the file name recorded in the corresponding subfile table.

Subsequently, the system controller 20 reads the corresponding title through the file system 201 and transmits the title to the display device 30 through the transmission module 204. At the same time, the system control unit 20 monitors the timer value of the timer 203 and before the value matches the playback time information (playback start time information and playback duration information) recorded in the subfile management table, the memory 21 The corresponding subfiles recorded in) are extracted and transmitted to the display apparatus 30.

The display apparatus 30 completes the subtitle by combining the corresponding subfiles received through the transmission module 304 and displays the completed subtitle by superimposing it on the screen on which the title is being played.

The system control unit 20 having transmitted the subtitle extracts the subfile belonging to the next subtitle and stores it in the memory 21 according to the procedure described above with reference to the subtitle manager, and the subtitle is assigned to the title at a predetermined time. The subfile stored in the memory 21 is read and transmitted to the display apparatus 30 so as to be reproduced in synchronization with the display apparatus 30. The display apparatus 30 repeats the above-described procedure to reproduce the subtitle in synchronization with the title.

Meanwhile, one title and one superfile are recorded on the optical recording medium according to the second embodiment, but one superfile may be recorded for a plurality of titles. At this time, the superfile includes a subtitle set corresponding to each title. The subtitle set includes subtitles to be played along with corresponding titles, and each subtitle includes a subfile. In this case, the subtitle manager has a subtitle set management table and a plurality of subtitle set tables. The subtitle set management table has a file name of a superfile, the number of subtitle sets, and a subtitle set table pointer. The subtitle set table has a subtitle management table and a plurality of subtitle tables. The information recorded in each table is the same as that of FIG. However, since the superfile file name is recorded in the subtitle set management table, the superfile file name does not need to be recorded in the subtitle management table again.

In addition, unlike the first and second embodiments described above, one subfile is used to indicate at least two subtitles, and thus, one subfile may be configured to belong to at least two subtitles. In such a case, the plurality of subfiles used to display one subtitle may not be continuously recorded, and the method of displaying position information indicating the position of the subfile in the subtitle manager is changed. For example, assuming that subfile #s is used to indicate subtitles # 1 to #S, subfile #s is recorded S times according to the above-described embodiment. If the number of such subfiles is large, it may be more efficient to record the subfile only once and extract the subfile with reference to the location information whenever necessary.

As described above, according to the present invention, a subtitle which is completed by combining various types of data such as text data and video data as well as graphic data can be reproduced in association with a corresponding title.

Furthermore, according to the present invention, there is provided a recording medium, a reproducing apparatus, and a reproducing method recorded in a data structure that can be interpreted and presented by a D-TV or HDTV.

Claims (32)

A title comprising audio data and / or video data; At least one subtitle provided to correspond to the title and including at least one subfile and configured by combining the subfiles; And And link information for the title of the subtitle, including reproduction time information of the subtitle and a file name of the subfile. The method of claim 1, The corresponding subfile constituting the subtitle is recorded continuously. The method of claim 2, The link information further includes a file name of a subfile serving as an entry point for calling the subfile. The method according to any one of claims 1 to 3, The play time information includes a play start time information and a play duration time information of the subtitle. The method according to any one of claims 1 to 3, And the play time information includes play start time information and play end time information of the subtitle. The method according to any one of claims 1 to 3, The subfile includes a text file. The method of claim 6, The subfile may further include an image file or a video file. A title comprising audio data and / or video data; A superfile concatenated with at least one subfile for combining at least one subtitle; And And link information for the title of the superfile is recorded so that the subtitle can be reproduced in association with the title. The method of claim 8, The corresponding subfile constituting the subtitle is recorded continuously. The method of claim 9, And the link information includes a subtitle manager in which a file name of the super file, position information in the super file of the subfile, and reproduction time information of the subtitle are recorded. The method of claim 10, The subtitle manager further includes subfile information serving as an entry point for calling the subfile. The method of claim 11, The subtitle manager includes a subtitle table provided to correspond to the subtitles and a subtitle management table for managing the subtitle table, The subtitle management table includes a subtitle table pointer indicating a file name of the superfile, the number of subtitles, and a location of the subtitle table. And the subtitle table includes the positional information and the reproduction time information. The method of claim 12, The subtitle table includes a subfile table arranged to correspond to a corresponding subfile, and a subfile management table for managing the subfile table, The subfile management table further includes subfile information serving as an entry point for calling the subfile. The method according to any one of claims 8 to 13, And the location information of the subfile in the superfile includes location information of the subtitle in the superfile and location information of the subfile in the subtitle. The method of claim 14, The location information of the subtitle in the superfile includes an offset value of the subtitle and size information of the subtitle. The method of claim 14, The location information of the subfile in the subtitle includes the number of the subfiles and the size of the subfiles. The method according to any one of claims 8 to 13, The reproduction time information includes a reproduction start time information and a reproduction duration time of the subtitle. A method for reproducing data from a recording medium on which a title including audio data and / or video data, and a superfile connected with at least one subtitle to be reproduced associated with the title, are recorded. (a) reading at least one subfile constituting a subtitle corresponding to a selected title from the superfile; And and (b) playing the read subfile in association with the selected title. The method of claim 18, In step (a), searching for a corresponding subtitle in the superfile by referring to offset values and size information of the corresponding subtitle; And and (a2) extracting the subfile by referring to the number and size information of the corresponding subfile in the searched subtitle. The method of claim 19, In step (b), (b1) combining the read subfiles to complete a corresponding subtitle; And (b2) reproducing the completed subtitle in synchronization with the title. The method of claim 20, Step (b1), The subtitle of the extracted subfile is first opened, and the remaining subfile linked to the entry subfile is opened and combined with the opened entry subfile to complete the subtitle. The method of claim 21, Step (b2), And displaying the subtitle together with the title at a predetermined playback start time and continuing the display of the subtitle for a predetermined playback duration. The method of claim 18, And the subfile comprises a text file. The method of claim 23, wherein The subfile further includes an image file or a video file. A reproduction apparatus for reproducing data from a recording medium on which a title including audio data and / or video data and a superfile connected with at least one subtitle to be reproduced associated with the title are recorded. Extracting means for extracting at least one subfile constituting a subtitle corresponding to a selected title from the superfile; And And transmitting means for transmitting the subfile extracted by said extracting means to a display apparatus for reproducing in association with said selected title. The method of claim 25, The extraction means, Control means for searching for the corresponding subtitle in the superfile by referring to the offset value and the size information of the corresponding subtitle, and for searching the subfile by referring to the number and size information of the corresponding subfile in the searched subtitle; And And a reading means for reading the subfile searched by said control means. The method of claim 26, The extraction means, A storage means for storing the subfile read by the reading means, And the transmission means transmits the subfile stored in the storage means to the display apparatus. The method according to any one of claims 25 to 27, The display device, And a read subfile is combined to complete a corresponding subtitle, and the reproduced subtitle is reproduced in synchronization with the title. The method of claim 28, The display apparatus may complete the subtitle by first opening an entry subfile among the extracted subfiles, opening a remaining subfile linked to the entry subfile, and then combining the entry subfile with the opened entry subfile. Playback device. The method of claim 29, And the display apparatus displays the subtitle together with the title at a predetermined playback start time and continues displaying the subtitle for a predetermined playback duration. The method of claim 30, And the subfile includes a text file. The method of claim 31, wherein The subfile further comprises an image file or a video file.