RU2402082C2 - Recording medium, as well as method and device for playing back data recorded on said medium - Google Patents

Abstract

FIELD: information technology. ^ SUBSTANCE: recording medium includes a data area and a data management area. The data area includes a single film playback unit and a single Java playback unit which have different formats. The data management area includes several data management files for playing back the single film and Java playback unit. Data management files contain a film object file and a Java object file. The film object file contains management information relating to film, which is associated with playback of the single film playback unit. The Java object file contains management information relating to Java, which is associated with playback of the single Java playback unit. ^ EFFECT: efficient playback of a recording medium having different attributes by providing a new file structure for managing playback of such data. ^ 17 cl, 9 dwg

Description

FIELD OF THE INVENTION

The invention relates to a recording medium, and more particularly, to a recording medium and a method and apparatus for reproducing data recorded thereon.

State of the art

Optical discs are widely used as a recording medium for recording large amounts of data. Today, among a wide range of optical discs, a new high-density recording medium, such as a blu-ray disc (hereinafter referred to as “BD”), is being developed for recording and storing high-definition video and audio data for a long period of time. Currently, a blu-ray disc (BD), which is known as the next generation of recording media technology, is under development as the next generation optical recording solution that can record data that is significantly larger than a traditional DVD, along with many other digital devices . Also in discussion and development is an international standard for the specification of such a technology.

If in great detail, then a variety of data having different attributes can also be written to a blu-ray disc (BD). Examples of such data could be titles with recorded movie data in MPEG-2 format, titles containing interactive information, including movie data that are executed (or played) using Java programs recorded there, titles that are recorded in language programming for the web, etc. However, in the current BD standard, it is still necessary to approve the details of general standardization for reproducing (or playing) the above-described data (i.e., titles) having various attributes, there are many limitations in the manufacturing development of an optical recording and / or reproducing device based on a blu-ray disc (BD).

Disclosure of invention

Accordingly, the present invention is directed to a recording medium, as well as to a method and apparatus for reproducing data recorded thereon, which largely eliminates one or more problems due to limitations and disadvantages of the prior art.

An object of the present invention is to provide a recording medium in which a variety of data having various attributes can be recorded, and to provide a new file structure for controlling the reproduction of such data.

Another objective of the present invention is to provide a method and apparatus for reproducing data suitable for such a recording medium.

Additional advantages, objects and features of the invention will be set forth in part in the description that follows, and in part will become apparent to those skilled in the art after analyzing the following description, or may be studied by putting the invention into practice. The objectives and other advantages of the invention can be realized and achieved by means of the device shown in detail in its written description and claims, as well as the accompanying drawings.

To achieve these goals and other advantages and in accordance with the purpose of the invention, as implemented and outlined in this document, the recording medium includes a data area including first and second titles having different data formats, and a data management area including a plurality of data management files for reproducing the first and second titles, wherein the data management files include a first object file containing first control information associated with the reproduction ction of the first title and the second object file, which includes the second control information associated with the reproduction of the second title.

In another aspect of the present invention, the recording medium includes a data area including a movie title and a Java title, and a data management area including a movie object file containing control information for reproducing a movie title, at least one Java object file, containing control information for reproducing a Java title, and an index file containing index information of a movie title and a Java title.

In another aspect of the present invention, the recording medium includes a data area including a movie title and a Java title, and a data management area including a movie object file containing control information for reproducing a movie title, at least one Java object file, containing control information for reproducing a Java title, a first index file containing index information of a movie title, and a second index file containing index information of a movie title and Java title.

In another aspect of the present invention, the recording medium includes a data area including a movie title and a Java title, and a data management area including a movie object file containing control information for reproducing a movie title and an index file containing index information of the title a movie and a Java title, wherein the data management area further includes a Java program file containing Java object information associated with reproducing a Java title.

In another aspect of the present invention, a method for reproducing data recorded on a recording medium that includes a data area comprising first and second titles having different data formats, and a data management area comprising control information for reproducing the first and second titles includes extracting the index information of the first and second titles from the data management area, executing the first object associated with the reproduction of the first title and the designated index information when the command to play the first title is entered, and the execution of the second object associated with playing the second title and indicated by index information when the command to play the second title is entered.

In an additional aspect of the present invention, a device for reproducing data recorded on a recording medium that includes a data area comprising first and second titles having different data formats, and a data management area comprising control information for reproducing the first and second titles includes a microcomputer for generating a control signal for reading the index information of the first and second titles that is contained in at least one index file, and for reading I information of the objects of the first and second titles, which is contained in at least one object file, wherein said at least one index file and said at least one object file are included in the data management area, and a player unit for reproducing a title selected by the user, using index information and object information extracted from the data management area.

It should be understood that both the foregoing general description and the following detailed description of the present invention are illustrative and explanatory and are intended to provide further explanation of the claimed invention.

Brief Description of the Drawings

The accompanying drawings, which are included to provide an additional understanding of the invention, and form part of this application, illustrate embodiment (s) of the invention, and together with the description serve to reveal the principle of the invention.

In the drawings:

Figure 1 is an illustration of each title recorded on a recording medium according to the present invention;

FIG. 2 is an illustration of a file structure recorded on a recording medium (i.e., an optical disk) and its relationship to reproducing data according to the present invention; FIG.

Figure 3 is an illustration of a recording structure of data recorded on a recording medium (i.e., an optical disk) according to the present invention;

4A and 4B are illustrations of a file structure recorded on an optical disc according to a first embodiment of the present invention;

4C is an illustration of a relationship for reproducing data using a file structure according to a first embodiment of the present invention;

5A and 5B are illustrations of a file structure recorded on an optical disc according to a second embodiment of the present invention;

5C is an illustration of a relationship for reproducing data using a file structure according to a second embodiment of the present invention;

Fig. 5D is an illustration of a file structure recorded on an optical disc according to a third embodiment of the present invention;

5E is an illustration of a communication for reproducing data using a file structure according to a third embodiment of the present invention;

6A is an illustration of a file structure recorded on an optical disc according to a fourth embodiment of the present invention;

6B is a communication illustration for reproducing data using a file structure according to a fourth embodiment of the present invention;

7A is an illustration of a file structure recorded on an optical disc according to a fifth embodiment of the present invention;

7B is an illustration of a relationship for reproducing data using a file structure according to a fifth embodiment of the present invention;

Fig. 8A is an illustration of a file structure recorded on an optical disc according to a sixth embodiment of the present invention;

8B is an illustration of a relationship for reproducing data using a file structure according to a sixth embodiment of the present invention;

9A is an illustration of an optical recording and / or reproducing apparatus as a whole according to the present invention;

9B is an illustration of a player model according to the present invention.

The best option for carrying out the invention

Reference will now be made to the details of preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Where possible, the same reference numbers in the drawings will be used to refer to the same or similar parts. In addition, although the terms used in the present invention are selected from well-known and used terms, some of the terms mentioned in the description of the present invention are selected by the applicant at his or her discretion, the detailed meaning of which is described in the relevant parts of this description. In addition, it is required that the present invention is understood not simply by the actual terms used, but by the semantic meaning of each belonging term.

In this detailed description, “recording medium” refers to all types of media that can record data, and generally includes all types of media, regardless of the recording method, for example, an optical disk, magnetic tape, etc. Hereinafter, for ease of description of the present invention, an optical disc and, more specifically, a “Blu-ray disc (BD)" will be shown as an example of a recording medium provided herein. However, it will be apparent that the spirit or scope of the present invention can be applied equally to other types of recording medium.

In the present invention, “title” refers to a single unit of play (or play), providing interaction with the user. More specifically, according to the present invention, the title is associated with a specific object. And the stream associated with the corresponding title recorded on the optical disc is reproduced in accordance with a command or program in this object. Accordingly, the relationship between the title recorded on the optical disc and the file structure inside the optical disc for reproducing the title will be described in detail with reference to FIG. 2. More specifically, in order to simplify the description of the present invention, among the titles recorded on the optical disc, the title with the recorded movie data and / or interactive information will be called a “high definition movie title (HDMV)” or “movie title”. A title containing the movie data recorded therein and interactive information that is executed by the Java program is called a “Java title”.

In addition, in the present invention, an “object” refers to playback control information including a command or program for reproducing an optical disc. More specifically, there are various types of objects on the disk, where each object is either associated with a specific title or sequentially associated with other objects on the disk. Therefore, a wide selection of disc playback scenarios can be provided. In other words, according to the present invention, an object can be considered as a reproducing unit including a command or program for managing a script for reproducing data recorded on an optical disc. Accordingly, the object for reproducing the “HDMV title” is called the “Movie Object” or “M-OBJ”, and the object for reproducing the “HDMV title” is called the “Java Object” or “J-OBJ”. In addition, a file including object information is called an object file, which will be described in detail in a later process.

Figure 1 provides a conceptual understanding of the present invention. More specifically, FIG. 1 illustrates an example of reproducing a read-only blu-ray disc (BD-ROM) by the optical recording and / or reproducing apparatus 10. In particular, FIG. 1 illustrates an example where titles recorded on a BD-ROM consist of a combination of HDMV and Java titles (what is called “Full Mode”). The present invention should provide a standardized file structure within an optical disc, as well as a method and apparatus for reproducing such a file structure, so as to reproduce a BD-ROM that is recorded in “Full mode”.

Accordingly, the optical recording and / or reproducing apparatus 10 according to the present invention can record or reproduce data on or from optical discs of various standards. And depending on its design, the optical recording and / or reproducing device 10 can either record / play optical discs of only one specific standard (for example, a blu-ray disc (BD)), or only reproduce data and not perform any data recording. The present invention provides an example of a player (i.e., a BD player) for playing a read-only blu-ray disc (i.e., a BD-ROM). Here, many titles are recorded on the BD-ROM in accordance with the BR-ROM format. Obviously, the optical recording and / or reproducing device 10 may also be called the “drive” that computers can be equipped with.

Besides the blu-ray disc playback function (BD-ROM), the optical recording and / or reproducing apparatus 10 according to the present invention also has a function of reading data in the BD-ROM, performing signal processing and decoding in accordance with the read data, and transmitting the decoded signal a display device 30 that connects to the optical recording and / or reproducing device 10 so as to transmit a signal to the user through the screen of the display device. Accordingly, the optical recording and / or reproducing apparatus 10 is initially designed to reproduce all the titles that are recorded in the BD-ROM, each of the titles having attributes different from each other. However, the optical recording and / or reproducing apparatus 10 can reproduce titles only with specific attributes (e.g., HDMV titles), which will be described in detail with reference to FIG. 7A to FIG. 8B.

Figure 2 illustrates the file structure (a) recorded on a recording medium (e.g., BD-ROM) and the relationship (b) between each file in the file structure (a) when playing back a specific title from the file structure (a) according to the present invention . The file structure (a) of FIG. 2 will now be described in detail.

In the playback control file structure (a), at least one BD directory (BD directory) is included in the root directory. Each BD directory includes an index file (“index”) and an object file (“Object”), which provide interactivity with one or more users. Each BD directory includes three file directories including data to be reproduced and information necessary to reproduce the data. The file directories included in each BD directory are the stream directory (STREAM), the playlist directory (PLAYLIST), and the clip information directory (CLIPINF). The BD directory also includes a Java directory (JAVA), which consists of one or more Java program files. Hereinafter, the aforementioned directories and files included in each directory will be described in detail. Also, directory names and file names used to describe the file structure according to the present invention are only examples that are used to simplify the description of the file structure.

Referring to FIG. 2, a stream directory includes a plurality of stream files recorded in certain formats in an optical disc. Typically, movie data, audio data, interactive graphics data, or text subtitle data is recorded in each stream file. In addition, the clip information directory (CLIPINF) includes clip information files (01000.clpi, 02000.clpi) that are in one-to-one correspondence with each of the stream files included in the stream directory. The clip information file (* .clpi) includes property information and time characteristics information of the corresponding stream file. More specifically, the stream file (* .m2ts) and the clip information file (* .clpi), which are in one-to-one correspondence with this stream file, are collectively referred to as a “clip”. In other words, there must be a clip information file (* .clpi) corresponding to each stream file (* .m2ts).

Referring again to FIG. 2, a playlist directory (PLAYLIST) includes one or more playlist files (* .mpls), where each playlist file (* .mpls) includes at least one playitem (Playltem) , which indicates the playback interval for a particular clip. In other words, the Playback Element includes information indicating times of the start and end of the display (IN-Time and OUT-Time) of a particular clip. Here, a particular clip is indicated by clip_Information_File_name (clip_information_file_name) in the Playback Element. A Playlist file (* .mpls) plays the desired clip from a combination of one or more Playback Elements. Moreover, the Playlist file (* .mpls) also includes a SubPlayItem for reproducing data (if in detail, subdata) that are different from the data reproduced by the Playback Element.

More specifically, the playlist file is managed (or executed) only by command of the above object. Accordingly, from the position of the disc playback script, the Object executes or controls the dynamic script, and the Playlist file (* .mpls) executes or controls the static script. In addition, the Java Directory (JAVA) includes Java program files (for example, PPPPP.jar or QQQQQ.jar). Different types of applications are programmed in each Java program file, which in particular is called “Xlet”. The Java program file is processed by a special Java reproducer, which will be described in detail in a later process with reference to FIG.

Referring to FIG. 2, part (b) illustrates the relationship of a particular title reproduced by the file structure (a) also shown in FIG. 2. Accordingly, the relationship of the corresponding title that is reproduced when a title reproduction command made by a user that specifically targets a specific title provided by an index table configured based on the index file will be described in detail. Here, the index file includes “Initial Playback” information, “Main Menu” information, and at least one “Title” (i.e., Title # 1 - Title # 4). The initial playback information includes image information that is displayed first when the corresponding disc is loaded, and the Main menu information provides (or displays) a menu screen. Here, the title (i.e., Title # 1-Title # 4) can be configured from any one of the HDMV title and the Java title.

In a later process, when the user selects a specific title (eg, Title # 1), a specific Playlist is played in accordance with a command or program of a particular object that is associated with the selected Title # 1 in the File Object File (a). A specific clip (configured from “* .clpi” and “* .m2ts”) is also played through the Playback Item in the Playlist. Accordingly, if the selected title (for example, Title # 1) is an HDMV title, then this title is played using the specific “M-OBJ” included in one of the object files. Alternatively, if the selected title (eg, Title # 1) is a Java title, then a specific “J-OBJ” is used for playback. More specifically, the present invention seeks to provide various exemplary embodiments for a method of configuring the above objects (“M-OBJ” and “J-OBJ”) according to the present invention, which will be described in detail with reference to figa-6 B. In addition, the index the file can be configured from either a single index file (for example, FIGS. 8A and 8B), or configured from a first index file including index information regarding only HDMV titles and a second index file including information both with respect to HDMV titles and Java titles (for example, FIGS. 7A and 7B). This will be described in more detail with reference to figa-8B.

3 illustrates an example structure of information associated with a file structure (a) recorded in an optical disc. More specifically, starting from the inner circumference (or center) of the disk, the disk volume includes a file system information area occupying the farthest inner part of the disk volume, an AV stream region occupying the nearest outer part of the disk volume, and a database area located between the area file system information and stream data area. In the file system information area, system information for managing all data files is recorded. And main data, such as audio / video / image data, is recorded in the stream area. Disk playback control files, such as index files, object files, Playlist files, and clip information files, are recorded in the database volume area of the disk. Moreover, the area in which HDMV and Java titles are recorded according to the present invention is called the “Title Recording Area”. This region corresponds to the flow region shown in FIG. The area for recording information and files for playing back titles is called the “management area”. This area corresponds to the file system information area and the database area shown in FIG. Here, each region shown in FIG. 3 is only exemplary and therefore the orientation of each of the regions is not limited to the structure shown in FIG. 3.

4A and 4B illustrate a file structure recorded on an optical disc according to a first embodiment of the present invention. And FIG. 4C illustrates a relationship for reproducing data using a file structure according to a first embodiment of the present invention. Referring to FIG. 4A, the basic configuration of the file structure is identical to the file structure shown in FIG. 2 (a). Therefore, the structure of the object file that controls the dynamic script will now be described in detail.

In the present invention, a Movie Object (M-OBJ) for reproducing HDMV titles and a Java Object (J-OBJ) for reproducing Java titles are formed so as to be independent of each other and therefore not interfere with each other. In the first embodiment of the present invention, “M-OBJs” are included in a single Movie Object file (MovieObject.bdmv), and “J-OBJs” are included in each corresponding Java program file (* .jar). For example, J-OBJ 1 is included in PPPPP.jar, and J-OBJ 2 is included in QQQQQ.jar. Accordingly, FIG. 4B illustrates a plurality of J-OBJs included in each Java program file (* .jar) in the file structure shown in FIG. 4A. For example, by including a plurality of J-OBJs (i.e., J-OBJ I, J-OBJ 2, ...) in the PPPPP.jar file, an optical disc can be designed and produced using a wider selection of playback scenarios. However, in this case, the starting object must be specified in the PPPPP.jar file. For example, the host J-OBJ 1 can be used as the starting object for executing PPPPP.jar. The above description may also apply to the QQQQQ.j ar file.

FIG. 4C illustrates a relationship for reproducing a specific title in accordance with the file structure shown in FIG. Here, it is assumed that Title # 1 and Title # 2 are HDMV titles and that Title # 3 and Title # 4 are Java titles. When an optical disc having the above structure is loaded into the optical recording and / or reproducing apparatus 10, and when the HDMV title (Title # 1 or Title # 2) is reproduced by selecting the playback of the title that is executed by the user, or by the playback script recorded in the optical disc , then first M-OBJ 1 and M-OBJ 2 must be executed, which are associated with Title # 1 and Title # 2, respectively. To accomplish this, the information "Title_mobj_id_ref", which executes the object associated with the corresponding title, must be recorded in the appropriate syntax. In the first embodiment, according to the present invention, M-OBJ 1 and M-OBJ 2 are included in a single movie object file (MovieObject.bdmv).

On the other hand, when an optical disc having the above file structure is loaded into the optical recording and / or reproducing apparatus 10, and when the Java title (Title # 3 or Title # 4) is reproduced by selecting the playback of the title that is executed by the user, or by the playback script recorded in the optical disc, J-OBJ 1 and J-OBJ 2 must first be executed, which are associated with Title # 3 and Title # 4, respectively. To accomplish this, the Title_jobj_id_ref information that executes the object associated with the corresponding title must be recorded in the appropriate syntax. When playback is performed using the file structure shown in FIG. 4A, J-OBJ 1 and J-OBJ 2 are included in each respective Java program file, PPPPP.jar and QQQQQ.jar. Therefore, the Title jobj id ref () information should require information indicating a Java program file including the corresponding J-OBJ (ie, “Jar_file_name”). When a Java program file is configured with multiple applications, information indicating the specific application (ie, "application_id") may further be included in the Title_jobj_id_ref () information. Therefore, the command that ultimately plays the Playlist file is executed by M -OBJ in the case of an HDMV title and is executed by J-OBJ in the case of a Java title.

5A and 5B illustrate a file structure recorded on an optical disc according to a second embodiment of the present invention. And FIG. 5C illustrates a relationship for reproducing data using this file structure according to a second embodiment of the present invention. Referring to FIG. 5A, the basic configuration of the file structure is identical to the file structure shown in FIG. 2 (a). Therefore, the structure of the object file that controls the dynamic script will now be described in detail. More specifically, when compared with the file structure shown in FIG. 4A, in the file structure of the second embodiment of the present invention, objects for reproducing Java titles (i.e., J-OBJ) and objects for reproducing HDMV titles (i.e., M- OBJ) are written together into a single object file (for example, "JavaObject.bdj"). In other words, referring to FIG. 5A, the “JavaObject.bdj” file and the “MovieObject.bdmv” file are configured under the BD directory as shared files. Alternatively, referring to FIG. 5B, the “MovieObject.bdmv” file is configured under the BD directory as a common file, and the “JavaObject.bdj” file is included in the Java directory (JAVA).

Fig. 5C illustrates the relationship for reproducing a particular title in accordance with the file structure shown in Figs. 5A and 5 B. It is assumed here that Title # 1 and Title # 2 are HDMV titles and that Title # 3 and Title # 4 are Java titles . When an optical disc having the above structure is loaded into the optical recording and / or reproducing apparatus 10, and when the HDMV title (Title # 1 or Title # 2) is reproduced by selecting the playback of the title that is executed by the user, or by the playback script recorded in the optical disc then M-OBJ 1 and M-OBJ 2, which are associated with Title # 1 and Title # 2, respectively, must be executed first. To accomplish this, the information "Title_mobj_id_ref", which executes the object associated with the corresponding title, must be recorded in the appropriate syntax.

On the other hand, when an optical disc having the above file structure is loaded into the optical recording and / or reproducing apparatus 10, and when the Java title (Title # 3 or Title # 4) is reproduced by selecting the playback of the title that is executed by the user, or by the playback script recorded in the optical disc, J-OBJ 1 and J-OBJ 2 must first be executed, which are associated with Title # 3 and Title # 4, respectively. To accomplish this, the information "Title_jobj_id__ref" that executes the object associated with the corresponding title must be written in the appropriate syntax. In a second embodiment, according to the present invention, J-OBJ 1 and J-OBJ are included in a single Java Object File (JavaObject.bdmv). More specifically, in the case of the second embodiment of the present invention, a command that executes a specific Java program is written to the J-OBJ, and a Java program file (e.g., PPPPP.jar or QQQQQ.jar), indicated by the J-OBJ, is executed. Here, the Java program file can be configured with many applications. And a particular application may include a program that wishes to play (or play) a specific playlist file.

Fig. 5D illustrates a file structure recorded on an optical disc according to a third embodiment of the present invention. And FIG. 5E illustrates a relationship for reproducing data using this file structure according to a third embodiment of the present invention. Referring to FIG. 5D, the basic configuration of the file structure is identical to the file structure shown in FIG. 2 (a). Therefore, the structure of the object file that controls the dynamic script will now be described in detail. More specifically, when compared with the file structure shown in FIG. 5B, in the file structure of the third embodiment of the present invention, a plurality of Java object files for reproducing Java titles is configured for each of the Java objects (i.e., J-OBJ). For example, the file “JavaObject1.bdj” and the file “JavaObject2.bdj” can be configured in the file structure.

Fig. 5E illustrates a relationship for reproducing a specific title in accordance with the file structure shown in Fig. 5D. Here, it is assumed that Title # 1 and Title # 2 are HDMV titles, and that Title # 3 and Title # 4 are Java titles. When an optical disc having the above structure is loaded into the optical recording and / or reproducing apparatus 10, and when the HDMV title (Title # 1 or Title # 2) is reproduced by selecting the playback of the title that is executed by the user, or by the playback script recorded in the optical disc then M-OBJ 1 and M-OBJ 2, which are associated with Title # 1 and Title # 2, respectively, must be executed first. To accomplish this, the information "Title_mobj_id_ref", which executes the object associated with the corresponding title, must be recorded in the appropriate syntax.

On the other hand, when an optical disc having the above file structure is loaded into the optical recording and / or reproducing apparatus 10, and when the Java title (Title # 3 or Title # 4) is reproduced by selecting the playback of the title that is executed by the user, or by script playback recorded in the optical disc, the first must be executed J-OBJ 1 and J-OBJ 2, which are associated respectively with Title # 3 and Title # 4. To accomplish this, the Title_bdjo_id_ref information that executes the Java object file associated with the corresponding title must be written in the appropriate syntax. In the third embodiment, according to the present invention, J-OBJ 1 and J-OBJ are included in each Java Object file (JavaObject1.bdj and JavaObject2.bdj), respectively. More specifically, in the case of the third embodiment of the present invention, a command that executes a specific Java program is written to the J-OBJ, and a Java program file (e.g., PPPPP.jar or QQQQQ.jar), indicated by the J-OBJ, is executed. Here, the Java program file can be configured with many applications. And a particular application may include a program that wishes to play (or play) a specific playlist file.

6A illustrates a file structure recorded on an optical disc according to a fourth embodiment of the present invention. And FIG. 6B illustrates a relationship for reproducing data using this file structure according to a fourth embodiment of the present invention. Referring to FIG. 6A, the basic configuration of the file structure is identical to the file structure shown in FIG. 2 (a). Therefore, the structure of the object file that controls the dynamic script will now be described in detail. More specifically, in the file structure of the fourth embodiment of the present invention (shown in FIG. 6A), Java objects for reproducing Java titles (i.e., J-OBJ) and Movie objects for reproducing HDMV titles (i.e., M-OBJ) are recorded together into a single object file (for example, "Object.bdj"). In other words, referring to FIG. 6A, one of the object files (for example, “Object.bdj”) is configured under the BD directory as shared files. The object file includes a "MovieObject ()" field and a "JavaObject ()" field. Here, the “MovieObject ()” field includes Movie object information (M-OBJ) for reproducing HDMV titles, and the “JavaObject ()” field includes Java object information (J-OBJ) for playing Java titles.

FIG. 6B illustrates a relationship for reproducing a specific title in accordance with the file structure shown in FIG. Here, it is assumed that Title # 1 and Title # 2 are HDMV titles, and that Title # 3 and Title # 4 are Java titles. When an optical disc having the above structure is loaded into the optical recording and / or reproducing apparatus 10, and when the HDMV title (Title # 1 or Title # 2) is reproduced by selecting a title playback that is performed by the user or by a playback script recorded in the optical disc, then M-OBJ 1 and M-OBJ 2, which are associated with Title # 1 and Title # 2, respectively, must be executed first. To accomplish this, the information "Title_mobj_id_ref", which executes the object associated with the corresponding title, must be recorded in the appropriate syntax. In a fourth embodiment of the present invention, M-OBJ 1 and M-OBJ 2 are each defined in the “MovieObject ()” field in the “Object.bdj” file.

On the other hand, when an optical disc having the above file structure is loaded into the optical recording and / or reproducing apparatus 10, and when the Java title (Title # 3 or Title # 4) is reproduced by selecting the playback of the title that is executed by the user, or by the playback script recorded in the optical disc, J-OBJ 1 and J-OBJ 2 must first be executed, which are associated with Title # 3 and Title # 4, respectively. To accomplish this, the Title_jobj_id_ref information that executes the object associated with the corresponding title must be recorded in the appropriate syntax. In the fourth embodiment, according to the present invention, J-OBJ 1 and J-OBJ 2 are each defined in the "JavaObject ()" field in the "Object.bdj" file. In addition, a command that executes a specific Java program (* .jar) is written to the J-OBJ, and a Java program file (for example, PPPPP.jar or QQQQQ.Jar), specified by the J-OBJ, is executed. Here, the Java program file can be configured with many applications.

7A illustrates a file structure recorded on an optical disc according to a fifth embodiment of the present invention. And FIG. 7B illustrates a relationship for reproducing data using this file structure according to a fifth embodiment of the present invention. In contrast to the above embodiments, FIGS. 7A and 7B are related to the configuration of the index file. Therefore, the file structure according to the fifth embodiment of the present invention (shown in FIGS. 7A and 7B) can be applied to the file structure according to the above-described first through fourth embodiments of the present invention, as well as other possible embodiments.

In this embodiment, when configuring the index file (index.xxxxx), a separate index file for the optical recording and / or reproducing apparatus that can only play HDMV titles is additionally created (or configured). More specifically, an index file (i.e., index.bdj), including both HDMV and Java titles, must be included in an optical disc containing both HDMV and Java titles recorded thereon. However, when using an optical recording and / or reproducing apparatus that can only play HDMV titles, Java titles and Java program files (* .jar) cannot be executed. This can cause confusion or error in the index file (index.bdj), which includes all the titles (i.e. both HDMV and Java titles). That is why a separate index file (index.bdmv) is created in advance only for HDMV titles during the optical disc manufacturing process in order to provide it to the user when an optical recording and / or reproducing apparatus reproducing only HDMV titles is used during the future process.

Figa illustrates an example of two index files ("index.bdj" and "index.bdmv"), which are created independently under the directory BD. FIG. 7B illustrates a relationship for reproducing a specific title in accordance with the file structure shown in FIG. 7A. Although the above-described embodiments shown in FIG. 4C, FIG. 5C, FIG. 5E and FIG. 6B can all be applied to FIG. 7B, the structure (or configuration) shown in FIG. 4C will be shown as an example for simplicity descriptions. Title # 1 and Title # 2 are assumed to be HDMV titles, and that Title # 3 and Title # 4 are Java titles. Accordingly, the index file (index.bdmv) for HDMV titles includes only title information corresponding to Title # 1 and Title # 2, and does not include any information about Title # 3 and Title # 4 that correspond to Java titles. Alternatively, in other embodiments, Title # 3 and Title # 4 information may be included in an index file (index.bdmv) created only for HDMV titles. However, instead of writing a “Title_jobj_id_ref ()” field that indicates Java objects (J-OBJ), “Title_mobj_id_ref” is written in the corresponding information of Title # 3 and Title # 4, which indicates a specific Movie object (M-OBJ). Thus, the execution of Java titles by Titles # 3 and # 4 can be prevented.

Therefore, when the optical recording and / or reproducing apparatus 10 that reproduces the above-described optical disc consists of a system supporting playback of all types of titles, among the plurality of index files, the device refers to an index file (index.bdj) that supports all the titles to provide user information about all titles. Alternatively, when the optical recording and / or reproducing device 10 consists of a system that supports playback of only HDMV titles, among the plurality of index files, the device refers to an index file (index.bdmv) that supports only HDMV titles to provide the user with information only about HDMV titles.

Fig. 8A illustrates a file structure recorded on an optical disc according to a sixth embodiment of the present invention. And FIG. 8B illustrates a relationship for reproducing data using this file structure according to a sixth embodiment of the present invention. In contrast to the embodiment shown in FIG. 7A, when configuring the index file (index.xxxxx), the field “index_bdj ()” including the index information of all titles and the field “index_bdmv ()” including index information of the titles HDMVs are independently configured in a single index file (called the index.bd file). Fig. 8B illustrates a relationship for reproducing a specific title in accordance with the file structure shown in Fig. 8A. Although the above-described embodiments shown in FIG. 4C, FIG. 5C, FIG. 5E and FIG. 6B can all be applied to FIG. 8B, the structure (or configuration) shown in FIG. 4C will be shown as an example for ease of description. .

Title # 1 and Title # 2 are assumed to be HDMV titles and that Title # 3 and Title # 4 are Java titles. Here, a single index file (index.bd) includes the field "index_bdj () >>, which includes information about all the titles (Title # 1-Title # 4), and the field" index_bdmv () ", which includes information about Title # 1 and Title # 2 (both HDMV titles). Therefore, when the optical recording and / or reproducing apparatus 10 that reproduces the above optical disc consists of a system supporting playback of all types of titles, the apparatus refers to the “index_bdj ()” field in the index file (index.bd) to provide the user with information about all the titles. Alternatively, when the optical recording and / or reproducing device 10 consists of a system that supports playback of only HDMV titles, the device accesses the “index_bdmv ()” field in the index file (index.bd) to provide the user with information only on the HDMV titles. In other embodiments, Title # 3 and Title # 4 information may be included in an index file (index.bdmv) created only for HDMV titles. However, instead of writing a “Title_jobj_id_ref () >> field that indicates Java objects (J-OBJ),“ Title_mobj_id_ref ”is written in the corresponding information of Title # 3 and Title # 4, which indicates a specific Movie object (M-OBJ). Thus, the execution of Java titles by Titles # 3 and # 4 can be prevented.

In all of the above embodiments (shown in FIGS. 4A to 8B), the “first playback” field corresponds to information indicating a first screen that is being played (or displayed) forcibly after the corresponding optical disk is loaded into the device 10. The “Main Menu” field is information indicating the screen (or title) that configures the main screen of the corresponding optical disc. Here, the “First Playback” field and the “Main Menu” field also include information indicating any of the M-OBJ and J-OBJ as a specific object belonging to it. However, it is preferable that the “First Playback” field and the “Main Menu” field in the index.bdmv file of FIG. 7B or the index.bd file of FIG. 8B include information indicating only the Movie Object (M-OBJ ) The reason is that index files (index.bdmv and index.bd) are created taking into account the optical recording and / or reproducing apparatus 10, which reproduces only HDMV titles.

9A and 9B illustrate an example of an optical recording and / or reproducing apparatus according to the present invention. More specifically, FIG. 9A illustrates the general structure of an optical recording and / or reproducing apparatus 10. And FIG. 9B illustrates a detailed structure of a player model according to the present invention, which is intended to reproduce an optical disc having titles recorded thereon with various attributes. Referring to FIG. 9A, an optical recording and / or reproducing apparatus 10 according to the present invention will be described in detail.

The optical recording and / or reproducing device 10 includes a head module 11 for reproducing control information including data recorded in the title recording area and file information recorded in the control area, a servo module 14 controlling the actions of the head module 11, processor 13 signals, or restoring the playback signal (or playback), received from the module 11 of the head, to the desired value of the signal or the modulating signal that you want to record, recorded in the optical disc signal and transmitting the modulated signal, memory 15 records various necessary information required for the optical disc, and a microcomputer 16 controlling the above operations. The above construction may be collectively referred to as a recording / reproducing unit 20. The controller 12 controls all components included in the overall design. More specifically, the controller 12 receives the play (or play) commands of a particular title via an interface with a user. Processing processing means 17 reproduces the final decoding of the output data in accordance with the control action of the controller 12 and provides decoded data to the user.

More specifically, the reproduction processing means 17 includes a decoder 17a and a player model 17b. The decoder 17a decodes the AV signal, and the player model 17b interprets the object information associated with the playback of specific titles and the user command received by the controller 12. Then, the player model 17b performs playback in accordance with the interpreted information and the command. However, depending on the embodiment, the player model 17b may also include a decoder 17a. In this case, the reproduction processing means 17 according to the present invention can function as a player model (shown in FIG. 9B). Moreover, in order to write the signal to the optical disk, the AV encoder 18 converts the input signal into a signal of a certain format (for example, the MPEG2 transport stream) in accordance with the control action of the controller 12 and provides the converted signal to the signal processor 13.

FIG. 9B illustrates a detailed structure of a player model that includes a manager (control) 171 modules, a film module 172, a BDJ module 173, a playback control tool 174, and a display mechanism 175. Here, the film module 172 and the BDJ module 173 are independently formed as separate means for controlling the reproduction process to reproduce HDMV and Java titles. More specifically, the movie module 172 plays HDMV titles, and the BDJ module 173 plays Java titles. Both the film module 172 and the BDJ module 173 have control functions that can receive and process the objects described above (M-OBJ or J-OBJ), which are received in the form of a command or program. As a means for receiving and processing object information, a movie processor 172a is included in the film module 172, and an application manager 173a and a Java virtual machine (VM) 173b are included in the BDJ module 173. In addition, the module manager 171 not only transfers the user command to the film module 172 and the BDJ module 173, but also controls the operation of the film module 172 and the BDJ module 173.

The playback control means 174 interprets the contents of the Playlist file that is recorded on the optical disc in accordance with the play (or play) command of the film module 172 and the BDJ module 173, and thereby performs playback (here, the contents of the Playlist file configure, in particular, static scenario). In addition, the means 175 display displays a specific stream on the screen. Here, the playback control of a particular stream is performed by the playback control means 174. If in detail, the playback control means 174 consists of a playback control function 174a and a player register 174b, the playback control function 174a actually controlling the entire playback, and the player registers 174b save (or register) a playback mode or a playback state (or condition) corresponding to the player. In some cases, the playback control functional element 174a may function as and is referred to as the playback control means 174. Player registers 174b are comprised of a plurality of player status registers (PSR) and a plurality of general purpose registers (GPR).

In the player model (shown in FIG. 9B), according to the present invention, the module manager 171, the film module 172, the BDJ module 173 and the playback control means 174 can be processed using software. Here, in fact, it is preferable to process the aforementioned elements using software rather than hardware. On the other hand, the display means 175, the decoder 17a, and the graphic panels 17c and 17a are typically designed as hardware. If in great detail, then elements that can be processed as software (for example, links numbered 171, 172, 173 and 174) can also be configured as part of the above controller 12. Therefore, it is obvious that each structural element according to the present invention should be considered and understand as part of the design itself and not be limited to whether each of the elements is configured as software or hardware.

The player model (shown in FIG. 9B) has the following characteristics. First, as described above, each of the film module 172 reproducing HDMV titles and the BDJ module 173 reproducing Java titles is independently formed. Here two modules (172 and 173) are not operated at the same time. In other words, the Java title cannot be played while the HDMV title is being played. And the HDMV title cannot be played while the Java title is being played.

In addition, each of the HDMV and Java titles receives the user command in a different way, and their methods of executing the received user command are also independent of each other. In this case, however, means for receiving a user command and transmitting the received command to one of the film module 172 and the BDJ module 173. In the present invention, the user event manager 171a included in the module manager 171 performs such a function. For example, when the received user command is a command made by user action (UO), the user event manager 171a transmits the received command to the UO controller 172b included in the film module 172 so that the user command can be executed. And when the received user command is a command made by a key event, the user event manager 171a transmits the received command to the Java VM 173b included in the BDJ module 173 so that the user command can be executed.

Moreover, any of the modules (172 or 173) that is currently in operation controls (or directs) the playback control means 174. More specifically, the movie module 172 is controlled while the HDMV title is being played, and the BDJ module 173 is controlled while the Java title is played. Finally, the graphic panel is also independently controlled. For example, the operation of the panel 17 with HDMV is controlled by the display means 175, and the operation of the Java panel 17d is controlled by the Java VM 173b included in the BDJ module 173.

A method for reproducing an optical disc by using an optical recording and / or reproducing apparatus according to the present invention will now be described in detail. More specifically, when an optical disc having the above-described reproduction control file structure recorded thereon in accordance with any of the above embodiments (shown in FIGS. 4A to 8B) is loaded into the optical recording and / or reproducing device 10, the microcomputer 16 reads file information recorded in the optical disc by using the head module 11. Then, the microcomputer 16 stores the read information in the memory 15. Then, after the user selection command for playing back the specific title is entered using the controller 12, the microcomputer 16 reads the specific data set in accordance with the playback scenario corresponding to the selected title. Then, the microcomputer 16 transmits the read data to the player model (shown in FIG. 9B). After that, in accordance with the playback scenario, certified by the attribute of the corresponding title and each object file and the Playlist file, the player model (shown in Fig. 9B) uses one of the film module 172 and the BDJ module 173 in order to perform the final title playback selected by the user.

Industrial applicability

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention covers the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.

Claims (17)

1. The recording medium containing:
a data area in which a unit for reproducing a movie and a unit for reproducing a Java having different data formats are stored; and
a data management area in which a plurality of data management files for reproducing a single movie playback unit and a single Java playback unit are stored, the data management files including a movie object file including film-related control information associated with reproducing a single film playback unit , and a Java object file including Java-related control information associated with reproducing a single reproducing unit Java
wherein the data management files include a plurality of Java objects for controlling reproduction of a single Java playback unit, and each of the Java object files includes one Java object. 2. The recording medium of claim 1, wherein the movie object file includes a plurality of movie objects. 3. The recording medium according to claim 1, in which each file of the Java object includes control information associated with the reproduction of a specific unit playback unit Java. 4. The recording medium according to claim 3, in which the control information included in each file of the Java object, indicates at least one Java program file associated with the reproduction of said specific unit Java playback unit. 5. The recording medium of claim 1, wherein the data management files include one Java object file for controlling reproduction of a single Java reproduction unit. 6. The recording medium of claim 5, wherein the Java object file includes a plurality of Java objects. 7. The recording medium according to claim 1, in which the data management files further include at least one index file containing index information of a single movie playback unit and a single Java playback unit. 8. The recording medium according to claim 1, in which the data management files further include a single index file containing index information of a single movie playback unit and a single Java playback unit, 9. The recording medium according to claim 1, in which the data management file further includes a film index file containing index information of a single film reproducing unit, and a Java index file containing index information of a single Java reproducing unit. 10. The recording medium according to claim 1, in which the data management files further include a first index file containing index information of a single film playback unit and a second index file containing index information of a single film playback unit and a Java single playback unit. 11. The recording medium containing:
a data area including a single movie playback unit and a Java playback unit; and
a data management area including a movie object file containing control information for reproducing a single movie reproducing unit, at least one Java object file containing control information for reproducing a single Java reproducing unit, and an index file containing index information of a single movie reproducing unit and a single play unit of Java. 12. The recording medium containing:
a data area including a single movie playback unit and a Java playback unit; and
a data management area including a movie object file containing control information for reproducing a single movie playback unit, at least one Java object file containing control information for reproducing a single Java playback unit, a movie index file containing index information of a single movie playback unit and a Java index file containing index information of a single movie playback unit and a single Java playback unit. 13. The recording medium containing:
a data area including a single movie playback unit and a Java playback unit; and
a data management area including a movie object file containing control information for reproducing a single film playback unit and an index file containing index information of a single film playback unit and a Java single playback unit, the data management area further comprising a Java program file, containing Java object information associated with reproducing a single unit of Java playback. 14. A method of reproducing data recorded on a recording medium, which includes a data area containing a single movie playback unit and a Java single playback unit having different data formats, and a data management area containing control information for reproducing a single movie playback unit and a single a Java playback unit, comprising the steps of:
reading index information of a unit for reproducing a movie and a unit for reproducing Java from a data management area;
executing a movie object associated with reproducing a single film reproducing unit and indicated by index information when a command to reproduce a single film reproducing unit is entered; and
executing a Java object associated with reproducing a single Java reproducing unit and indicated by index information when a command to reproduce a single Java reproducing unit is entered,
wherein the control information includes a plurality of Java object files for controlling reproduction of a single Java play unit, and each of the Java object files includes one Java object. 15. A method of reproducing data recorded on a recording medium, which includes a data area containing a group of unit film and Java playback units having different data formats, and a data management area containing control information for reproducing unit film and Java playback units, comprising stages in which:
retrieving a movie index file from the data management area, including index information of a single movie reproduction unit;
extracting from the data management area a Java index file including index information of a unit side of a movie reproduction and a unit block of Java reproduction;
provide the user with a movie-related list of a group of unitary movie playback units when only a group of unitary movie playback units is playable;
provide the user with a Java-related list of unit groups for reproducing a movie and Java, when both of the unit groups for reproducing a movie and Java are reproducible; and
reproducing a single playback unit that the user selects from the list of unit playback units related to the movie and Java. 16. A device for reproducing data recorded on a recording medium including a data area in which a single movie playback unit and a Java playback unit having different data formats are stored, and a data management area containing control information for reproducing a single film playback unit and Java play unit block containing:
a playback module, configured to reproduce data from the recording medium;
a controller configured to control a playback module for reading index information of a single movie playback unit and a single Java playback unit that is contained in at least one index file, and for reading information of objects of a single film playback unit and a Java single playback unit that is contained in at least one object file, wherein said at least one index file and said at least one object file are included into the data management area; and
a player unit configured to reproduce a single playback unit selected by the user using index information and object information read from the data management area,
wherein the control information includes a plurality of Java object files for controlling reproduction of a single Java play unit, and each of the Java object files includes one Java object. 17. The device according to clause 16, in which the playback module includes a head module, configured to read data from the recording medium.

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