KR100584574B1 - Information storage medium having data structure for being reproduced adaptively according to player profile information - Google Patents

Abstract

An information storage medium recorded in a data structure adaptively reproducible according to profile information is disclosed.

The information storage medium includes: interactive data displayed together with an AV screen obtained from the AV data, which is required for reproducing the AV data in the interactive mode, to provide additional information related to the AV screen; And profile information informing a version of the interactive data. As a result, it is possible to adaptively reproduce the various playback devices having different supported interactive data ranges.

Description

Information storage medium having data structure for being reproduced adaptively according to player profile information}

1 is a schematic diagram of a playback system according to a preferred embodiment of the present invention;

2 shows an embodiment of an ENAV disc 100 according to the invention,

3 is a schematic diagram of a volume space of the ENAV disk 100 according to an embodiment of the present invention;

4 is a directory structure diagram of an ENAV disc 100 according to an embodiment of the present invention;

5 is a relationship diagram of AV data and ENAV files recorded on the ENAV disc 100 according to an embodiment of the present invention;

6 is a block diagram of a playback apparatus 200 according to an embodiment of the present invention;

7 illustrates an example of a startup file STARTUP.MLS according to an embodiment of the present invention;

8 is a system parameter table in which profile information is recorded according to an embodiment of the present invention;

9 is a data structure diagram of profile information recorded as a system parameter of FIG. 8;

10 is a flowchart for explaining a playback method according to an embodiment of the present invention.

The present invention relates to an information storage medium having recorded therein information necessary for reproducing AV data in an interactive mode.

Based on a PC, a DVD (hereinafter referred to as "interactive DVD") that can play AV data in an interactive mode is sold. In the interactive DVD, AV data is recorded according to the conventional DVD-Video standard, and interactive data for supporting the interactive function is further recorded. AV data recorded on the interactive DVD can be displayed in two modes. One is a video mode displayed in the same manner as a general DVD-Video, and the other is an interactive mode in which an AV screen obtained by playing back AV data is embedded in an interactive screen obtained by playing back interactive data. For example, if the AV data is a movie title, a movie is displayed on the AV screen, and various additional information such as a script of the movie, a plot, a photograph of the actor, and the like are displayed on the interactive screen. The additional information may be displayed in synchronization with the title (AV data). For example, when a specific actor starts to appear on the AV screen, interactive data containing history information about the actor is reproduced and displayed.

Interactive data can be markup documents written in the markup language, script code that is created inside or in a separate file and linked to the markup document, audio files linked to the markup document, and played with the markup document, and animation files. , Image files, and so on. Various functions may be added in the user interface in the interactive mode to reflect various needs of the user. Therefore, when there is a playback device that supports the interactive mode, the range of interactive data supported for each playback device may vary.

Accordingly, it is an object of the present invention to provide an information storage medium having recorded thereon interactive data having a data structure adaptively reproducible for various reproduction apparatuses having a different range of supported interactive data.

Another object of the present invention is to provide an information storage medium having recorded thereon interactive data having a highly compatible data structure.

The object is, according to the present invention, interactive data displayed together with an AV screen obtained from the AV data necessary for reproducing the AV data in the interactive mode, to provide additional information related to the AV screen; And profile information informing a version of the interactive data.

The interactive data preferably includes a startup file that is read first when the interactive mode is selected, and the profile information is recorded in the startup file.

The profile information is preferably referred to by the playback device for reproducing the AV data in the interactive mode for selecting the playable interactive data.

Alternatively, the object may include a plurality of ENAV applications produced in a plurality of versions for reproducing AV data in an interactive mode; And profile information referenced to select any one of the plurality of ENAV applications.

The profile information is preferably recorded using an element linking a loading information file included in the ENAV application corresponding to the startup file that is first read when the interactive mode is selected.

The loading information file preferably indicates location information of ENAV files belonging to a corresponding ENAV application.

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

In the present specification, "interactive data" is data recorded to support an interactive mode, a markup document recorded in a markup language and / or script code, a script code file linked to or separately provided from a markup document, and a program file. As a resource file for linking to a markup document and being displayed together, it is used to mean an audio file, an animation file, an image file, and the like. In other words, the interactive data serves as an application program necessary for reproducing the AV data in the interactive mode and also serves as additional content provided with the AV data.

1 is a schematic diagram of a playback system according to a preferred embodiment of the present invention.

Referring to FIG. 1, the playback system includes an ENAV (ENhanced AV) disc 100, a playback device 200, and a TV 300 as a display device according to the present embodiment. ), The remote controller 400 as a user input device. The remote controller 400 receives a control command of the user and transmits the control command to the playback apparatus 200. The reproduction device 200 reproduces the AV data recorded on the ENAV disc 100 in the interactive mode. When the ENAV disc 100 is loaded in the DVD drive provided in the playback device 200 and the user selects the interactive mode, the playback device 200 plays the ENAV disc 100 in the interactive mode and transmits the ENAV disc 100 to the TV 300. . The TV 300 displays an AV screen according to the reproduced AV data together with the interactive screen obtained from the interactive application. The "interactive mode" refers to a method of displaying an AV screen on a display window defined in a markup document which is an interactive application, that is, a method of embedding an AV screen in an interactive screen. Here, the AV screen refers to a screen on which the DVD-Video data recorded on the ENAV disk 100 is reproduced by the playback device 200 and displayed on the TV 300, and the interactive screen is an interactive application recorded on the ENAV disk 100. The screen is interpreted and executed by the playback device 200 to be displayed on the TV 300. On the other hand, the "video mode" refers to a method of reproducing the AV data as defined in the conventional DVD-Video, that is, a method of displaying only the AV screen obtained by reproducing the corresponding AV data. In the present embodiment, the playback device 200 supports both the interactive mode and the video mode. Further, in the present embodiment, the playback device 200 may import AV data and / or interactive data from the network.

In particular, the playback apparatus 200 has a system parameter table in which a system parameter SPRM is set, and the system parameter table has player profile information according to the present invention. The player profile information informs the range of interactive data supported by the playback device 200. In other words, the player profile information is the same as the version information of the interactive data supported by the playback device 200. The version of the interactive data may be a version of the document type definition (DTD) of the markup language used to produce the ENAV file, a version of the programming language used to produce the ENAV file, or more widely used to implement an ENAV application. It may be a version of a language, or may refer to a version of a specification that defines the constraints of various resource files linked to markup documents.

Similarly, profile information informing the version of the interactive data stored in the disc 100 is recorded. The meaning of the profile information is the same as the player profile information, but differs in that it is recorded on the disc 100 and informs the corresponding interactive data.

According to the present invention, when the interactive mode is selected, the playback apparatus 200 reads the profile information recorded according to the present invention to the ENAV disc 100, compares it with the player profile information that it has as a system parameter, Play back using the selected interactive data.

2 is an embodiment of an ENAV disc 100 according to the present invention.

Referring to FIG. 2, interactive data is recorded on the ENAV disc 100 so as to correspond to profile information. That is, interactive data # 1 corresponding to profile information # 1 is recorded, interactive data # 2 corresponding to profile information # 2 exists, and there exists interactive data #n corresponding to profile information #n. Where n is an integer.

Profile information # 1,2, .., n is recorded separately from interactive data # 1,2, .., n and linked with interactive data # 1,2, .., n, or interactive data # 1,2 may be included as part of n.

If the player profile information recorded in the reproduction device 200 is profile information # 2, it means that not only the interactive data # 2 according to profile # 2 but also the interactive data # 1 according to profile information # 1 can be reproduced. Similarly, if the player profile information recorded in the reproduction device 200 is profile #n, it means that the reproduction device 200 supports any of the interactive data # 1, 2,..., N.

Therefore, if the player profile information is # 1, the playback apparatus 200 retrieves and plays back the interactive data # 1, but if the player profile information is # 2, the playback apparatus 200 may selectively play the interactive data # 2 and the interactive data # 1. It goes without saying that the interactive data # 2 can be set to play by default.

3 shows a volume space of the ENAV disc 100 according to an embodiment of the present invention.

Referring to FIG. 3, a Volume and File structure area in which information about a volume and a file is recorded, a AV data is recorded in a DVD-Video format, that is, a video title is a DVD-Video Data area, in a volume space of a disk 100. There is an ENAV file area in which ENAV files for supporting the interactive mode are recorded.

In the DVD-Video data area, VIDEO_TS.IFO containing the playback control information for the entire video title recorded on the disc 100 and VTS_01_0.IFO containing the playback control information for the first video title are recorded. The constituent AV data VTS_01_0.VOB, VTS_01_1.VOB, ... are recorded. VTS_01_0.VOB, VTS_01_1.VOB, ... are video titles, that is, video objects. Each VOB contains a VOBU packed with a navigation pack, video pack, and audio pack. A more detailed configuration is disclosed in the DVD-Video standard "DVD-Video for Read Only Memory Disc 1.0".

The ENAV file area stores an ENAV application composed of a plurality of ENAV files. That is, as the ENAV file, a startup file that is first read when the interactive mode is selected, a markup document corresponding to the selected video title, and the like are recorded.

As such, in the present embodiment, the interactive data is recorded in a plurality of ENAV files. As described above, ENAV files are markup documents, script code files, program files, style sheets for styling markup documents, resource files for linking and display with markup documents, audio files, animation files, Image file, etc.

4 is a directory structure diagram of an ENAV disc 100 according to an embodiment of the present invention.

Referring to FIG. 4, a DVD video directory VIDEO_TS exists in the root directory, and an ENAV directory DVD_ENAV in which ENAV data is recorded for supporting the interactive mode is provided.

VIDEO_TS stores data described with reference to FIG. 2, that is, VIDEO_TS.IFO, VTS_01_0.IFO, VTS_01_0.VOB, VTS_01_1.VOB, and the like. DVD_ENAV stores data described with reference to FIG. 2, that is, a startup file STARTUP.MLS and other ENAV files.

5 shows a relationship between AV data and ENAV files recorded on the ENAV disc 100 according to an embodiment of the present invention.

Referring to FIG. 5, ENAV applications are associated with AV data for which seamless reproduction is guaranteed. One ENAV application is a collection of a plurality of ENAV files. In order to ensure seamless reproduction of the AV data, it is desirable to buffer the corresponding ENAV application before playing the AV data in the interactive mode.

Each ENAV application contains one loading information file. In the loading information file, positional information of ENAV files necessary for reproducing the corresponding AV data in the interactive mode is recorded. The location information of the required ENAV files includes the location information of the ENAV file to be buffered, that is, the location information of the ENAV files to be preloaded before the corresponding ENAV application is launched.

Since preloading is performed for each ENAV application, seamless reproduction is guaranteed for the AV data corresponding to each ENAV application. Accordingly, it is desirable in view of the user interface that a content producer ensures seamless playback by producing one ENAV application corresponding to one video title and one video title chapter.

On the other hand, in response to preloading, postloading refers to buffering a predetermined ENAV file after the corresponding ENAV application is launched. An ENAV application does not necessarily have an ENAV file to post load. When postload is required, the loading information file records postload information necessary for postloading, that is, location information of the ENAV file to be postloaded.

6 is a block diagram of a playback apparatus 200 according to an embodiment of the present invention.

Referring to FIG. 6, the playback apparatus 200 according to the present embodiment includes a reader 1, an AV playback engine 2, and an ENAV engine 3.

The reader 2 reads AV data, that is, DVD-Video data and ENAV files in the present embodiment, from the DVD 300 in accordance with a control signal from the ENAV engine 3.

The AV reproduction engine 2 reproduces the AV data read by the reader 2. In this embodiment, since the AV data is recorded as DVD-Video data, in this embodiment, the AV reproduction engine 4 is implemented with a DVD-Video reproduction engine that reproduces DVD-Video data. The AV reproduction engine 2 communicates with the ENAV engine 3 through an application program interface (API). That is, in response to a request from the ENAV engine 3, the ENAV engine 3 is informed of the property of informing the operation status of the AV reproduction engine 2, and the trigger is sent to the ENAV engine 3. Send it to). For example, if a battle scene is displayed on the AV screen when Star Wars is displayed in the interactive mode, and a corresponding quiz is displayed on the interactive screen, the trigger is displayed before and after the battle scene is displayed. Point to inform.

The ENAV engine 3 plays back ENAV files. In particular, in the present embodiment, the ENAV engine 3 verifies, interprets, and executes a markup document, which is one of the ENAV files, to reproduce the DVD-Video data recorded on the DVD 300 in the interactive mode. In addition, the ENAV engine 3 blends the reproduced DVD-Video stream and the interpreted markup document and outputs the blended markup document. Accordingly, the TV 300 displays an interactive screen in which an AV screen is embedded. On the other hand, the ENAV engine 3 may include various plug-ins. Plug-ins allow you to open files in various formats that are included in or linked to markup documents. For example, to play the AV data for the Windows Media Player, the ENAV engine 3 can bring up the Windows Media Player. In addition, the ENAV engine 3 can connect to a network and import necessary information such as an ENAV file.

In particular, the ENAV engine 3 reads the profile information recorded in the startup file according to the present embodiment, compares it with the player profile information recorded in the system parameter table, and accordingly the corresponding loading information file accordingly. Choose. The loading information file contains a list of ENAV files to be buffered in advance or during playback for seamless playback. The ENAV engine 3 buffers ENAV files according to the selected loading information file into a buffer (not shown) provided in the ENAV engine 3 and then analyzes and executes the initial file.

7 shows a startup file STARTUP.MLS according to an embodiment of the present invention.

Referring to FIG. 7, a start-up file STARTUP.MLS, which is a markup document written using a markup language, includes two elements. One is the "walledgarden" element and the other is the "loadinginfo" element.

The " walledgarden " element links a walled garden list file listing the list of files accessible according to the area or parental level of the network accessible through the inserted ENAV disc 100. However, the "walledgarden" element does not have to be recorded in the startup file.

The "loadinginfo" element links a loading information file for loading an ENAV application, which is a collection of ENAV files required for reproduction in interactive mode, that is, location information of ENAV files belonging to the ENAV application. In the present embodiment, condition information for selecting one of a plurality of ENAV applications is recorded by using the "condition" element included in the "loadinginfo" element. In more detail, condition information for selecting an ENAV application is recorded using the "name" and "value" attributes recorded in the "condition" element.

There are two "loadinginfo" elements in the startup file according to this embodiment. The symbol A indicates the part where the first "loadinginfo" element is written, and the symbol B indicates the part where the second "loadinginfo" element is written. The ENAV application referenced by the first "loadinginfo" element records the attribute values "name" and "value" of the "condition" element contained in the "loadinginfo" element as "profile" and "01", respectively. The profile information of the ENAV file included in the corresponding ENAV application is "01", and the version information of the ENAV file constituting the ENAV application referred to by the second "loadinginfo" element is "00". For example, the profile information "00" is a standard ENAV application standard. The markup document corresponding to DVD-ML 1.0 and the resource files linked to the markup document include JPEG and PNG. In addition to the content of the profile information "00" as a standard, the specification may be an extended standard including a markup document or a resource file produced using Flash, JAVA Language, or the like.

In the conventional playback apparatus, since there is only one standard that defines a restriction condition of ENAV files at a branch point at which one of a plurality of ENAV applications is to be executed for the first time, that is, all ENAV applications are manufactured under the same restriction condition. That is, in view of profile information according to the present invention, since only one profile information is present, there is no need to select an ENAV application according to the profile information. However, in the present invention, the profile information is recorded in consideration of the version up of the standard that stipulates the addition, deletion, etc. of various resource files in the future, so that the profile information can be recorded and included in the startup file so that the information storage medium can be included in the production process. It is to be able to produce content produced in multiple versions.

8 shows a system parameter table in which player profile information is recorded according to an embodiment of the present invention.

Referring to FIG. 8, the system parameter table according to the present embodiment is stored in the playback apparatus 200. In consideration of compatibility, system parameters 0 to 20 refer to the DVD Specifications for Read-Only Disc Part3 Video. The player profile information according to the present invention is added to the system parameter table according to System Parameters (SPRMs) defined in the specification. System parameters are stored with a fixed length of 2 bytes. Each parameter has an integer value of 16-bits. In particular, the system parameters SPRM 11 to SPRM 21 are referred to as player parameters. Parameters for the playback device have only read attributes. Detailed descriptions of the SPRM (0) to the SPRM (20) are described in the DVD-Video standard, and since the direct relationship with the present invention is low, the description thereof is omitted here.

System parameters 21-24 are reserved parts of the system parameter table, and player profile information according to the present invention is recorded in the system parameter 21 as Player Profile Code. In this embodiment, the SPRM 21 is recorded so as to have only a read attribute.

9 is a data structure diagram of player profile information recorded as the system parameter of FIG.

Referring to FIG. 9, player profile information according to the present invention is recorded in two bits of two bytes allocated to the SPRM 21. Thus, the remaining 14 bits are reserved so that other information can be recorded.

The SPRM 21 has 00b by default. 00b means player profile information according to the basic standard of DVD-Video in which interactive data is further recorded. Extended version can be set as 01b, 10b, 11b.

After the basic player profile information (e.g. "00b") has been upgraded, if an ENAV DVD with previous versions of interactive data has been created for backward compatibility with the new version (e.g. "01b") interactive data, The playback apparatus supporting the version "01b" refers to the profile information "01b" recorded in the SPRM 21, and the loading information file informing the position information of the ENAV application recorded according to the new version in the startup file of FIG. Play by selecting "LoadingInformation1.ldi". However, when played back by a playback device that supports the previous version "00b", the start-up file of FIG. 7 is moved to the previous version "00b" so that it matches the version information "00b" recorded in the SPRM 21 of the playback device. The loading information file " LoadingInformation2.ldi " which informs the position information of the corresponding ENAV application is selected and played.

The reproduction method according to the present invention will be described based on the above configuration.

10 is a flowchart illustrating a reproducing method according to an embodiment of the present invention.

Referring to FIG. 10, when the ENAV disc 100 is loaded into the playback device 200, the playback device 200 checks the startup file stored in the DVD_ENAV directory to determine whether the inserted disc is the ENAV DVD 100. Determine (step 1001). If the playback device 200 does not find the start-up file, it determines that the inserted disc is a conventional DVD-Video disc (step 1002), plays in the video mode (step 1003), or fails to play the other disc.

The playback apparatus 200 recognizes that the inserted disc is the ENAV disc 100 when the start-up file is found (step 1001). When the user selects the video mode, the playback apparatus 200 plays the video mode (step 1003). When the user selects the interactive mode (step 1004), the playback device 200 reads the startup file (step 1005), reads the profile information recorded in the startup file, and writes the player profile information recorded in the system parameter table. The matching loading information file is read (step 1006). The ENAV file listed in the loaded loading information file is buffered (step 1007), and the first AV file is interpreted and executed from the initial file to reproduce the selected AV data in the interactive mode (step 1008).

On the other hand, the above-described reproduction method can be created by a computer program. Codes and code segments constituting the program can be easily inferred by a computer programmer in the art. In addition, the program is stored in a computer readable medium, and read and executed by a computer to implement the reproduction method. The information storage medium includes a magnetic recording medium, an optical recording medium, and a carrier wave medium.

As described above, according to the present invention, there is provided an information storage medium having recorded thereon interactive data having a data structure adaptively reproducible for various reproducing apparatuses having a different range of supporting interactive data. Furthermore, it is possible to produce an information storage medium on which interactive data having a highly compatible data structure is recorded, and a user can have a wider choice.

Claims (7)

Interactive data, which is displayed together with the AV screen obtained from the AV data, which is necessary for playing the AV data in the interactive mode, to provide additional information related to the AV screen; And And a profile information for informing a version of the interactive data, wherein the playback device for reproducing the AV data in the interactive mode includes reference information for selecting playable interactive data. The method of claim 1, The interactive data includes a startup file that is first read when the interactive mode is selected, And the profile information is recorded in the startup file. delete A plurality of ENAV applications produced in a plurality of versions for reproducing the AV data in the interactive mode; And And a profile information for informing a version of the plurality of ENAV applications, wherein the playback device for reproducing the AV data in an interactive mode includes reference information for selecting a reproducible ENAV application. The method of claim 4, wherein And the profile information is recorded in a startup file which is first read when the interactive mode is selected. The method of claim 5, And the profile information is recorded using an element linking a loading information file included in a corresponding ENAV application. The method of claim 6, The loading information file informs the location information of ENAV files belonging to a corresponding ENAV application.

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