KR20050074881A - Storage medium including interactive graphic stream providing a plurality of languages, reproducing apparatus, and reproducing method therefor - Google Patents

Abstract

Disclosed are a storage medium, a reproduction device, and a reproduction method for recording an interactive graphic stream supporting a plurality of languages.

According to the present invention, a storage medium for storing multimedia information includes video data, graphic data in at least one language providing a menu screen overlaid on an image based on the video data, and information on a language constituting each graphic data. Characterized in that it comprises a. Accordingly, graphics such as a menu or a button of a language preferred by the user may be provided using graphic data supporting a plurality of languages.

Description

Storage medium including interactive graphic stream providing a plurality of languages, reproducing apparatus, and reproducing method therefor}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the reproduction of multimedia images, and more particularly, to a storage medium, a reproduction device, and a reproduction method for recording an interactive graphic stream supporting a plurality of languages.

In order to reproduce the multimedia image, AV data for the multimedia image, control information for controlling reproduction of the AV data, and the like are recorded in the storage medium. In particular, the AV data (Audio-visual data) is recorded by multiplexing multiple pieces of information necessary for reproducing a multimedia image such as video, audio, subtitle, menu, etc. into one main stream.

1 is a diagram showing the structure of AV data recorded on a storage medium.

Referring to FIG. 1, a storage medium for playing a multimedia image includes a video stream 102, an audio stream 104, a presentation graphics stream 106 for providing a subtitle, and an interactive graphics stream for providing a menu screen. 108 is multiplexed and recorded as one main stream. The multiplexed main stream is hereinafter referred to as AV data 110.

The presentation graphics stream 106 is used to provide additional images related to the playback of high definition movies. Mainly providing subtitles or related graphics during movie playback.

The interactive graphics stream 108 is used to provide interaction with the user during the playback of high definition movies. Provides a menu screen mainly composed of buttons for performing a specific command during the playback of a high-definition movie. For example, the user may select a chapter or a title to change the playback time, or provide a function of changing a setting of the playback device such as removing a sound. Images defined within the interactive graphics stream are overlaid on the video image.

The presentation graphics stream 106 providing the audio stream 104 or the subtitle of each of the aforementioned streams includes at least one or more streams to provide various languages, thereby providing audio or subtitles supporting various languages. do.

However, conventional storage media and playback apparatuses have a problem in that they cannot provide a method for supporting a plurality of languages for an interactive graphic stream.

Accordingly, it is an object of the present invention to provide a storage medium, a playback device, and a playback method for recording an interactive graphic stream supporting a plurality of languages in order to solve the above problems.

The above object is characterized in that the storage comprises the video data, graphic data in at least one language providing a menu screen overlaid on an image based on the video data, and information on a language constituting each graphic data. Achieved by the medium.

In addition, video data and graphic data are multiplexed into one stream, and information about a language is preferably recorded separately from the multiplexed stream.

In addition, the information on the language is preferably included in the clip information file which is control information on the recording unit of the multiplexed stream.

In addition, the information on the language is preferably included in a structure in which coding information of each stream in the clip information file is recorded.

In addition, the storage medium preferably further includes information on an application type for which graphic data is used.

The storage medium preferably further includes priority information on the graphic data to be reproduced preferentially from the at least one graphic data.

On the other hand, according to another field of the present invention, the above object is to provide a playback device for reproducing a storage medium for storing graphic data in at least one language that provides a video screen and a menu screen overlaid on an image based on the video data. A video decoder for decoding the video data; A memory storing language information on graphic data selected by a user among graphic data; A graphic decoder that finds and decodes graphic data corresponding to language information stored in a memory by referring to language information of each graphic data stored in the storage medium; And a blender for overlaying the decoded video data with the graphic data.

Further, the memory is preferably a system register which stores the current reproduction status and reset information of the reproduction apparatus.

On the other hand, according to another field of the present invention, the above object is directed to a playback method for reproducing a storage medium for storing graphic data composed of at least one language providing a menu screen overlaid on video data and an image based on the video data. A method comprising: decoding video data; Comparing the language information for each graphic data stored in the storage medium with the language information for the graphic data selected by the user stored in the memory of the playback device, and decoding the graphic data corresponding to the comparison result; And overlaying and outputting the decoded video data and the graphic data.

In addition, the memory is a system register for storing the current playback status and reset information of the playback device, the decoding of the graphic data is characterized in that the process of comparing the user-selected language information set in the system register with the language information stored in the storage medium It is desirable to.

In addition, the language information stored in the storage medium is stored in the clip information file recorded separately from the video data and the graphic data, and the process of decoding the graphic data compares the language information stored in the clip information file with the language information selected by the user stored in the memory. It is preferable to characterized in that the process.

The storage medium may further include information about an application type for which the graphic data is used, and the decoding of the graphic data may be a process of referring to a memory storing additional language information according to the application type. .

The storage medium may further include priority information of graphic data to be reproduced preferentially among at least one graphic data, and the decoding of the graphic data may include priority information when there is a plurality or no graphic data corresponding to the comparison result. It is preferable to characterize the process of decoding the corresponding graphic data with reference.

Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment of the present invention;

2 is a diagram showing the structure of a reproducing apparatus for reproducing a storage medium recording the AV data 110 according to the present invention.

Referring to FIG. 2, a reproducing apparatus for reproducing a multimedia image reproduces the AV data 110 with reference to the above-described control information. The control information may include information about a coding type of the AV data, a bit rate, area information in which the AV data is recorded, types of data included in the AV data, and the like. The control of the reader 210, the demultiplexer 220, and each of the decoders 230 to 260 is controlled with reference to the control information.

In detail, the reader 210 reads the multiplexed AV data 110 from the storage medium 200 using the area information in which the above-described AV data is recorded, and transmits the multiplexed AV data 110 to the demultiplexer 220. The demultiplexer 220 separates the transmitted AV data 110 into a video stream 102, an audio stream 104, a presentation graphics stream 106, and an interactive graphics stream 108 according to a data type. 230 to 260). Each stream transmitted to the corresponding decoder is decoded according to the data type and prepared to be output on the screen at a specified time. The decoded video stream and the presentation graphics stream and / or the interactive graphics stream are overlaid through the blender 270 into one image. Finally, the selected image is output on the display screen based on the output state set by the user. For example, the output state of the playback device may be controlled based on the user's selection, such as on / off of the subtitle, audio mute, and the like.

In particular, the interactive graphic decoder 250 receives the interactive graphic stream 108 from the storage medium 200, decodes it, and overlays and outputs a menu screen including a button on a screen where a high quality movie is being played. . The user may receive a user's selection by selecting a specific button on the output menu screen. That is, it may provide an interactive function with the user. For example, a user's selection such as setting on / off of a subtitle, moving to another title or chapter, muting audio, etc. can be applied to the playback apparatus. Hereinafter, the structure of the interactive graphic decoder in the playback apparatus according to the present invention will be described in more detail.

3 is a diagram illustrating the structure of an interactive graphics decoder for playing back an interactive graphics stream according to the present invention.

Referring to FIG. 3, the AV data 110 read from the storage medium is interactive graphics stream 108 selectively transmitted to the transmission buffer 304 through the PID (Packet IDentifier) filter 302. It is decoded at the decoder 310.

Inside the interactive graphics decoder 310, the interactive graphics stream 108 is temporarily stored in the coding data buffer 312 and then sent to the stream graphics processor 314. The transmitted interactive graphics stream is decoded by the stream graphics processor 314 so that the object data for the button image is sent to the object buffer 316, and the configuration information of the button is sent to the configuration buffer 318. The graphic controller 320 configures an image to be output with reference to the corresponding configuration information for each transmitted object data, and transmits the configured image to the graphic plane 330. That is, the graphic controller 320 configures an image to be output on the current screen, and transmits the configured image from the object buffer 316 to the graphic plane 330. The transmitted image is displayed on the screen by referring to a color lookup table (abbreviated as CLUT) according to the color information included in the corresponding configuration information. In addition, the graphic controller 320 receives a user input (abbreviated as a user operation (UOP)), changes a button state according to movement or selection of a button, and applies the result to a screen output.

Hereinafter, the structure of the data of the interactive graphic stream according to the present invention will be described in more detail based on the structure of the reproduction apparatus described above.

4 is a diagram illustrating a mutual relationship between various data recorded in a storage medium for reproducing the AV data 110 according to the present invention.

Referring to FIG. 4, a storage medium according to the present invention records data having four hierarchical structures in order to control reproduction of the AV data 110 shown in FIG. 1. Each layer is composed of an index table, a movie object, a playlist, and a clip.

First, the clip 410 is a single object made of the AV data (110) for providing a multimedia image, such as a high-definition movie shown in Figure 1 and the attribute information of the corresponding A / V data. AV data is recorded in the clip AV stream file 412, and attribute information of the AV data is recorded in the clip information file 414. As shown in FIG. 1, the clip AV stream file 412 multiplexes and records an interactive graphic stream such as a button object, as well as a video stream, an audio stream, and a presentation graphic stream for a subtitle.

On the other hand, the playlist 420 is a set of playback sections to be played in one unit of the above-described clip 410, each playback section is called a PlayItem (PlayItem). The play item 422 is composed of a pair of IN-point representing the start time of the playback section and OUT-point representing the end time of the playback section. IN_point and OUT_point of each reproduction section are converted into specific position information of the clip AV stream 412 with reference to the clip information file 414 which recorded the attribute information of the above-mentioned AV data. Accordingly, the AV data corresponding to the playback section may be found and the AV data of the corresponding section may be reproduced.

Meanwhile, the movie object 430 is composed of navigation commands. Navigation commands initiate playback of playlist 420, switch between movie objects, or manage playback of the playlist according to the user's preference.

The index table 440 is top-level data for defining a plurality of titles and menus, and includes all titles and menu start position information. Accordingly, the selected title or menu can be played through user input such as title search or menu call. In addition, when the storage medium is inserted into the playback device, it also includes start position information for First Playback that designates a title to be played first.

In particular, the menu according to the present invention is implemented as a set of the above-described button object (Button Object). Images of a plurality of buttons constituting one menu and commands to be executed when the corresponding button is selected are grouped and recorded as one interactive graphic stream. The interactive graphics stream is also multiplexed with video, audio, and presentation graphics and recorded as a clip AV stream file 412.

5 is a diagram showing the structure of a display set constituting the interactive graphic stream according to the present invention.

Referring to FIG. 5, a display set, which is a set of data required to configure one menu screen, is illustrated. The interactive graphics stream according to the invention consists of a plurality of display sets. One display set is composed of a composition segment, a definition segment, and an end segment. The configuration segment is a part defining configuration information, output time, and the like of an image of a button used to provide a menu. The definition segment includes a plurality of object segments and palette segments. The object segment is the part that defines the actual data of the image used to provide the button and the command to be executed when the button is executed. The palette segment defines the color information to be applied to the button image. Also, the end segment is a portion indicating the end of one display set.

In the case of a menu implemented through an interactive graphic stream composed of at least one display set, a user may perform an operation such as changing a viewpoint of a reproduction or renewing a setting of a reproduction apparatus. In this case, it is preferable that a plurality of interactive graphic images output through the reproduction device are displayed in various languages that the user can understand for the convenience of the user.

Accordingly, the present invention provides a storage medium in which a plurality of interactive graphic streams made in various languages are recorded. In particular, it is preferable to include language information so that a user can select and play an interactive graphic stream in a desired language among interactive graphic streams produced in a plurality of languages. The data structure of a specific interactive graphic stream will be described later.

FIG. 6 is a diagram illustrating a playitem including information on streams that are allowed to be reproduced among streams included in AV data according to the present invention.

6 and 4, the playitem 422, which is a reproduction unit of AV data, includes a stream number table (hereinafter, referred to as an STN table) in which information about a stream that is permitted to be reproduced is recorded. . Referring to the STN table of playitem # 1 of FIG. 4, playitem # 1 allows reproduction of video streams V, audio streams A1 and A2, presentation graphics streams P2 and P3, and interactive graphics streams I1 and I2. Playitem # 2 is allowed to play video stream V and audio stream A3. The playback device may play back some of the streams that are allowed to be played with reference to the STN table of the playitem.

7 is a diagram illustrating an example of a clip information file 414 including language information supported by an interactive graphic stream according to a preferred embodiment of the present invention.

Referring to FIG. 7, the clip information file 414 includes ProgramInfo () having program information included in the clip AV stream 412. A program is a set of continuous data on the same time axis, and one clip AV stream 412 file recorded on a storage medium according to the present invention has one program. One program defined in ProgramInfo () consists of a plurality of streams, and each stream is managed by a PID (packet identifier). Coding information of a stream having a unique PID is included in StreamCodingInfo ().

In addition, StreamCodingInfo () includes coding type information of a stream having a specific PID. Coding type information indicates that the corresponding stream is one of a video, audio, presentation, and interactive graphic stream shown in FIG. 1. In the present invention, when coding type information indicates an interactive graphic stream, language_code is defined as an attribute field for the stream. Language_code according to the present invention represents language information for an interactive graphic stream. Accordingly, the storage medium according to the present invention can provide interactive graphic streams produced in a plurality of languages.

On the other hand, in order to play back the stream by selecting a language desired by the user from among the plurality of interactive graphic streams provided, the playback apparatus according to the present invention is a memory for storing the state information and setting values currently being played, and a system register (Player). Status Register: (hereinafter abbreviated as PSR).

System registers (PSRs) are divided into two types. That is, a playback status register and a player setting register. The former is a memory area for storing parameters indicative of the current playback state of the playback device. Information on the title number, chapter number, playback time, etc. currently being played is stored. The latter is a memory area for the user to set the parameters of the playback device. The user may set parameters such as a preferred audio and subtitle language. However, once the latter parameters are set, their values cannot be reset during playback.

8 is a diagram showing an example of a system register of a reproduction device for reproducing a storage medium according to the present invention.

Referring to Fig. 8, the registers PSR0 to PSR10 corresponding to the reproduction status register and the registers PSR13 to PSR18 corresponding to the reproduction setting register are shown. In particular, the PSR18 stores language information 802 of a menu preferred by the user according to the present invention. When a storage medium recording an interactive graphic stream produced in a plurality of languages is reproduced through a reproduction device according to the present invention, the reproduction device may generate an interactive graphic stream corresponding to language information of a user's preferred menu with reference to PSR18 described above. Select and play it.

The playback apparatus according to the present invention selects the interactive graphic stream to be played back according to the following priorities.

(1) language code: language information of the interactive graphics stream stored in the PSR18 which is a system register of the playback device;

(2) The order of the at least one interactive graphic stream which is allowed to play in the playitem.

Hereinafter, a process of selecting an interactive graphic stream by the playback apparatus according to the present invention will be described in more detail.

9 is a diagram illustrating a method of selecting an interactive graphic stream to be reproduced first when a storage medium is reproduced according to the present invention.

9, 4, and 6, when the storage medium is inserted, the playback apparatus first executes the first movie object to be played first indicated by First Playback in the index table (step 902). When the navigation commands included in the corresponding movie object are sequentially executed and a command for playing a specific playlist is encountered, playback of the playlist 420 is started.

Specifically, the playback device prepares for playback of the first playitem 422 of the playlist indicated by the movie object (step 904). That is, a stream which is allowed to be reproduced is extracted from a plurality of streams multiplexed in the clip AV stream 412 to be reproduced through the first playitem. At this time, if there is no interactive graphic stream in the clip AV stream file or there is no interactive graphic stream but there is no interactive graphic stream having a PID that allows playback in the playitem as shown in FIG. After the PID of the interactive graphic stream stored in the PSR0 is set to a default value, playback is started (step 908).

On the other hand, when there are a plurality of interactive graphic streams allowed by the playitem, the playback apparatus interprets language information (language_code) of each interactive graphic stream with reference to StreamCodingInfo () in the clip information file proposed in the present invention (step 910). ). It is determined whether there is an interactive graphic stream that matches the language information set in the system register PSR 18 described above with reference to FIG. 8 among the language information of each interpreted interactive graphic (step 912). If there is an interactive graphic stream having language information that matches the value of the PSR18, the PSR0 of the playback apparatus is set to the PID number of the corresponding interactive graphic stream and playback starts (step 916). If there is no interactive graphic stream that matches the value of PSR18, the PID number of the stream having the fastest order, that is, the lowest PID number, among the plurality of interactive graphic streams allowed to be played back is set to the value of PSR0. Start playback (step 914).

As described above, the author may provide a menu produced in various languages through the author medium including the language information of the interactive graphic stream and the playback apparatus supporting the same. In addition, the user can select and play a menu in a language of his / her preferred language.

Meanwhile, as another embodiment of the present invention, application information of an interactive graphic stream will be described below.

In general, a typical example of an application using an interactive graphic stream is a menu. The menu is an option for allowing the user to select a playback unit or change the state of the playback device. Typical examples of menu use include menus that allow you to select playback units, such as title menus or chapter menus, menus that let you change states such as audio menus, subtitle menus, angle menus, or submenus such as root menus. There is a menu for connection. In such a menu, it is desirable to support a plurality of languages for the convenience of the user.

On the other hand, as another application of the interactive graphic stream, the buttons appearing during playback are mostly irrelevant to the language information, such as when there are only commands without being displayed on the screen or for implementing a simple animation. Thus, the storage medium according to the invention preferably further comprises application information of the interactive graphic stream.

FIG. 10 is a diagram illustrating an example of a clip information file including language information and application information about an interactive graphic stream according to another embodiment of the present invention.

Referring to FIG. 10, application information (is_menu) is defined as an attribute field of an interactive graphic stream included in the StreamCodingInfo () described above with reference to FIG. 8. If the value of the application information (is_menu) is 0, it indicates that it is a general button, not a menu, and if 1, it indicates a menu. Therefore, the language information (language_code) in the StreamCodingInfo () including the application information indicates each language information according to the application example of the interactive graphic stream. That is, it is possible to distinguish between language information when the interactive graphic stream is used as a menu and language information when it is used for other cases.

11 is a diagram showing an example of a system register of a reproduction device for reproducing a storage medium according to another embodiment of the present invention.

Referring to FIG. 11, the PSR18 stores language information of a user's favorite menu when an application method is a menu among interactive graphic streams, and PSR19 stores language information of another case where the application method is not a menu among interactive graphic streams. Save it. Accordingly, the playback apparatus according to another embodiment of the present invention selects the interactive graphic stream to be played first by referring to PSR18 when the interactive graphic stream is used as a menu and by referring to PSR19 when the interactive graphic stream is used as a menu. do.

Hereinafter, a process of selecting an interactive graphic stream from a storage medium including the above-described language information and application information by the above-described reproduction apparatus will be described in more detail.

FIG. 12 illustrates a method of selecting an interactive graphic stream to be reproduced first when a storage medium is reproduced according to another exemplary embodiment of the present invention.

Referring to FIG. 12, a reproduction apparatus for reproducing a storage medium including the above-described language information and application information selects an interactive graphic stream based on the following priority order. That is, (1) Language code: Language information of the interactive graphics stream stored in the system registers such as PSR18 or PSR19 depending on the application method of the interactive graphics stream, and (2) Various interactive graphics that allow playback in the playitem. The order of the streams is that.

However, although a plurality of interactive graphic streams included in one clip AV stream file may exist according to language information, it is preferable that the application methods are all menus or all other buttons. In this case, the playback device only needs to refer to either PSR18 or PSR19 as the interactive graphic stream to be played first.

Meanwhile, as another embodiment of the present invention, priority information on an interactive graphic stream will be described below.

In the storage medium including the application information and the language information of the interactive graphic stream as described above, it is assumed that the plurality of interactive graphic streams belonging to one program have the same application information and different language information. However, in the case of an information storage medium that can include not only language information but also application information in one program, there are two interactive streams that satisfy each of PSR18 and PSR19 when selecting an interactive graphic stream to be reproduced for the first time. Problems may arise. Therefore, the storage medium according to the present invention preferably further includes priority information of the interactive graphic stream.

FIG. 13 is a diagram for another example of a clip information file including language information, application information, and priority information about an interactive graphic stream.

Referring to FIG. 13, not only language information (language_code) and application information (is_menu) but also priority information (is_priority) are defined as attribute fields for a plurality of interactive graphic streams included in the aforementioned StreamCodingInfo (). That is, when there is an interactive graphic stream satisfying each of PSR18 and PSR19 in one program, the priority information 1302 of the first interactive graphic stream to be selected is set to one. At this time, the priority information 1302 of the remaining interactive graphic streams is set to zero.

Meanwhile, as another embodiment of the present invention, the above-described priority information 1302 may be used when there is no language information and application information in the clip information file 414. In this case, the priority information may be used in step 914 of FIG. 9 or step 1218 of FIG. 12. In other words, if playback is allowed in the playitem but there is no interactive graphic stream corresponding to the language information set in the PSR18 or PSR19, the priority is given to the playback device instead of setting 0 as the initial value when assigning the number of the basic interactive graphic stream. Information 1302 can be set to the number of the interactive graphics stream whose number is one.

The above description is only one embodiment of the present invention, and those skilled in the art may implement the present invention in a modified form without departing from the essential characteristics of the present invention. That is, it should be interpreted to include various embodiments that are not limited to the examples according to the present invention but within the range equivalent to the contents described in the claims.

As described above, according to the present invention, a graphic such as a menu or a button of a user's preferred language may be provided through a storage medium in which an interactive graphic stream including language information, application information, and / or priority information is recorded. Various applications are possible using interactive graphic streams.

1 is a diagram showing the structure of AV data recorded on a storage medium;

2 is a diagram showing the structure of a reproduction device for reproducing a storage medium having recorded AV data according to the present invention;

3 illustrates the structure of an interactive graphics decoder for playing back an interactive graphics stream in accordance with the present invention;

4 is a view showing a mutual relationship between various data recorded in a storage medium for reproduction of AV data according to the present invention;

5 is a diagram showing the structure of a display set constituting an interactive graphic stream according to the present invention;

FIG. 6 is a view showing a playitem including information on streams that are allowed to be reproduced among streams included in AV data according to the present invention; FIG.

FIG. 7 illustrates an example of a clip information file including language information supported by an interactive graphic stream according to a preferred embodiment of the present invention. FIG.

8 shows an example of a system register of a reproduction device for reproducing a storage medium according to the present invention;

9 is a view showing a method of selecting an interactive graphic stream to be reproduced first when playing a storage medium according to the present invention;

10 is a diagram illustrating an example of a clip information file including language information and application information about an interactive graphic stream according to another embodiment of the present invention;

11 shows an example of a system register of a reproduction device for reproducing a storage medium according to the present invention;

12 is a view showing a method of selecting an interactive graphic stream to be reproduced first when playing a storage medium according to the present invention;

FIG. 13 is a diagram for another example of a clip information file including language information, application information, and priority information about an interactive graphic stream.

Claims (14)

Video data; Graphic data configured in at least one language for providing a menu screen overlaid on an image based on the video data; And And information on languages constituting the graphic data. The method of claim 1, And the video data and the graphic data are multiplexed into one stream, and information about the language is recorded separately from the multiplexed stream. The method of claim 2, And the information on the language is included in a clip information file which is control information on a recording unit of the multiplexed stream. The method of claim 3, The information on the language information is included in a structure in which coding information of each stream in the clip information file is recorded. The method of claim 1, The storage medium further comprises information on an application type for which the graphic data is used. The method of claim 1, And the storage medium further comprises priority information of graphic data to be reproduced preferentially from at least one of the graphic data. A reproduction apparatus for reproducing a storage medium for storing graphic data composed of at least one language providing video data and a menu screen overlaid on an image based on the video data. A video decoder for decoding the video data; A memory storing language information on graphic data selected by a user among the graphic data; A graphic decoder that finds and decodes graphic data corresponding to language information stored in the memory by referring to language information of each graphic data stored in the storage medium; And And a blender that overlays the decoded video data and the decoded graphics data. The method of claim 7, wherein And the memory is a system register for storing the current reproduction status and reset information of the reproduction apparatus. The method of claim 7, wherein Language information for each graphic data stored in the storage medium is stored in the clip information file recorded separately from the video data and the graphic data, And the graphic decoder searches for language information stored in the clip information file to find and decode graphic data corresponding to the language information of the memory. A reproduction method for reproducing a storage medium for storing graphic data configured in at least one language that provides video data and a menu screen overlaid on an image based on the video data. Decoding the video data; Comparing language information of each graphic data stored in the storage medium with language information of graphic data selected by a user stored in a memory of the playback device, and decoding graphic data corresponding to the comparison result; And And overlaying the decoded video data with the graphic data to output the graphic data. The method of claim 10, The memory is a system register that stores the current playback state and reset information of the playback device, and the decoding of the graphic data includes comparing language information selected by a user set in the system register with language information stored in the storage medium. The playback method characterized in that. The method of claim 10, The language information stored in the storage medium is stored in a clip information file recorded separately from the video data and the graphic data, and the decoding of the graphic data includes selecting language information stored in the clip information file by the user stored in the memory. A reproduction method characterized by comparing the language information. The method of claim 10, The storage medium may further include information on an application type for which the graphic data is used, and the decoding of the graphic data may refer to a memory storing separate language information according to the application type. Way. The method of claim 10, The storage medium further includes priority information of graphic data to be reproduced preferentially among at least one of the graphic data. And decoding the corresponding graphic data with reference to the priority information.