KR20100085437A - Apparatus for reproducing optical disc and reproducing method using the same - Google Patents

Apparatus for reproducing optical disc and reproducing method using the same Download PDF

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Publication number
KR20100085437A
KR20100085437A KR1020090004719A KR20090004719A KR20100085437A KR 20100085437 A KR20100085437 A KR 20100085437A KR 1020090004719 A KR1020090004719 A KR 1020090004719A KR 20090004719 A KR20090004719 A KR 20090004719A KR 20100085437 A KR20100085437 A KR 20100085437A
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KR
South Korea
Prior art keywords
application
optical disc
data
system memory
file
Prior art date
Application number
KR1020090004719A
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Korean (ko)
Inventor
김건석
Original Assignee
엘지전자 주식회사
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Publication date
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Priority to KR1020090004719A priority Critical patent/KR20100085437A/en
Publication of KR20100085437A publication Critical patent/KR20100085437A/en

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    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/005—Reproducing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
    • G11B7/00772—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track on record carriers storing information in the form of optical interference patterns, e.g. holograms
    • G11B7/00781—Auxiliary information, e.g. index marks, address marks, pre-pits, gray codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/84—Television signal recording using optical recording
    • H04N5/85—Television signal recording using optical recording on discs or drums
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/79—Processing of colour television signals in connection with recording
    • H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N9/82—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only
    • H04N9/8205—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only involving the multiplexing of an additional signal and the colour video signal
    • H04N9/8227—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only involving the multiplexing of an additional signal and the colour video signal the additional signal being at least another television signal
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2537—Optical discs

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)

Abstract

An optical disc reproducing apparatus according to the present invention includes a pickup for reading data from an optical disc, a local storage for storing contents and an external application provided from an external source, a system memory for storing an internal application for executing the contents, and a pickup, a local storage and It includes a control unit for controlling the system memory.

Description

Optical disc playback device and data playback method using the same {APPARATUS FOR REPRODUCING OPTICAL DISC AND REPRODUCING METHOD USING THE SAME}

The present invention relates to an optical disc reproducing apparatus and a data reproducing method using the same. More specifically, the present invention relates to an optical disc reproducing apparatus for reproducing data downloaded from the outside and a reproducing method using the same.

As a recording medium, an optical disc capable of recording a large amount of data is widely used. Most recently, new high-density recording media, such as Blu-ray Discs (BDs) and high-density digital video discs (HD-DVDs), can record and store high-quality video data and high-quality audio data for a long time. High Definition Digital Versatile Disc) and the like are being developed.

High-density recording media, the next-generation recording media technology, are next-generation optical recording solutions that can contain data that significantly surpasses existing DVDs. In addition, the development of an optical disc reproducing apparatus using a high density recording medium standard has also begun.

With the development of high-density recording media and optical disc reproducing apparatuses, recording and reproducing of titles having high interactivity based on data of various attributes, for example, the Java platform, has become possible. .

Such an optical disc reproducing apparatus should consider not only the basic function of recording and reproducing the data of the recording medium, but also the additional function considering the integrated use with the surrounding digital apparatus. That is, generally, a function of receiving and displaying data downloaded from the outside or reproducing by utilizing the external data and the data embedded in the recording medium must be provided.

SUMMARY OF THE INVENTION An object of the present invention is to provide an optical disc reproducing apparatus and a reproducing method which can reproduce external data more efficiently.

An optical disc reproducing apparatus according to the present invention includes a pickup for reading data from an optical disc, a local storage for storing contents and an external application provided from an external source, a system memory for storing an internal application for executing contents independently of the optical disc, and a pickup. And a control unit for controlling local storage and system memory.

The internal application may be a Java application application. The Java application application may be Xlet information. The Xlet information may be a boot Xlet for executing another Xlet.

Internal applications can be managed by the manufacturer of the playback device. The system memory may further store internal application related data provided by the manufacturer. The system memory may include data for binding with data stored on the optical disc.

Meanwhile, the data reproducing method according to the present invention includes executing an internal application for executing content independently of an optical disc stored in a system memory, and downloading content and an external application provided from an external source to a local storage using the internal application. And reproducing the content.

The optical disc reproducing apparatus and the data reproducing method using the same according to the present invention have the effect of reproducing external data using the reproducing apparatus without the optical disc.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention.

1 is a conceptual diagram showing a data reproducing method using the optical disc reproducing apparatus.

The optical disc reproducing apparatus 100 according to the embodiment of the present invention can record or reproduce optical discs of various standards, and may be designed to record and reproduce optical discs of a specific standard (for example, BD), and reproduce optical discs. It may be designed to do so.

However, hereinafter, a BD-player playing a Blu-ray Disc BD will be described as an example. In addition, the optical disc reproducing apparatus 100 of the present invention may be a drive that can be embedded in a computer or the like, and may be connected to a display device such as a television to perform a self-playing. It may be.

In addition to the function of recording and reproducing the optical disc 300, the optical disc reproducing apparatus 100 of the present invention receives an external input signal provided from an external source 400, processes the signal, and then uses a user through another external display 200. Has the function to pass to the screen. In this case, the external input signal is not particularly limited, but digital multimedia broadcasting (DMB) and Internet signals may be representative external input signals.

In particular, in the case of the Internet, as a medium that anyone can easily access at present, specific data on the Internet can be downloaded and utilized through the optical disc reproducing apparatus 100.

Such external data may include content information such as a movie or a game and application information for executing the same. In this case, such data may be recorded in the optical disc 300 or may utilize an application stored in the system memory of the optical disc reproducing apparatus 100.

By utilizing an application stored in the system memory, the external content can be reproduced even when the optical disc 30 is not loaded in the optical disc player 100. The application stored in the system memory may be provided and managed from the manufacturer 50 of the optical disc reproducing apparatus 100.

2 shows a file structure recorded on an optical disc according to an embodiment of the present invention.

As shown in FIG. 2, in the file structure of the optical disc, at least one BD directory BDMV exists under one root directory. Each BD directory (BDMV) includes an index file (index.bdmv) and an object file (MovieObject.bdmv) as general information (parent file) for securing interactivity with a user.

The index file contains data representing the index table, which has a plurality of selectable menus and movie titles. Each BD directory (BDMV) further includes four directories containing AV data and various data required for AV data reproduction.

In other words, in the BD directory BDMV, a stream directory STREAM, a clip information directory CLIPINF, a playlist directory PLAYLIST auxiliary data directory AUXDATA, a Java object directory BDJO and a BD-J directory JAR are included. Included.

First, the stream directory STREAM includes audio and video (AV) stream files recorded in a specific format in the disc. For example, since the AV stream is recorded as a transport packet of the MPEG2 method, the stream file is named * .m2ts as shown in FIG. The stream directory may include one or more text subtitle streams. Each text subtitle stream includes text data for text subtitles expressed in a specific language and reproduction management information for text data.

In addition, the text subtitle stream file may exist as an independent file in the stream directory, and may be named * .m2ts or * .txtst. AV stream files and text subtitle streams existing in the stream directory may be named clip stream files.

The clip information directory CLIPINF includes clip information files (* .clpi) that correspond one to one with each stream file (* .m2ts). In particular, each clip information file (* .clpi) includes attribute information and timing information of a corresponding stream file.

For example, the clip information file includes mapping information, and the mapping information is represented by a presentation time stamp (PTS) and a source packet number (SPN) by an entry point map (EPM). Packet Number) indicates one-to-one correspondence. Using the mapping information, a specific position of the stream file (* .m2ts) is determined from the time information (In-Time, Out-Time) provided by the play item (PlayItem) or the sub play item (SubPlayItem) to be described later. Lose.

A pair of clip info files (* .clpi) associated with a stream file (* .m2ts) is called a clip. For example, file 0.1000.clpi in clipinfo directory (CLIPINF) contains file in stream directory (STREAM), attribute information and time information for 01000.m2ts, so files 01000.clpi and 01000.m2ts are one. It will make a clip of.

The playlist directory PLAYLIST includes at least one playlist file (* .mpls), each playlist file (* .mpls) at least specifying a playing interval at which a particular clip is played. Contains one or more PlayItems.

In particular, the PlayItem is a playback time (In-Time) and a playback end time of a specific clip to be played back, that is, a clip specified as a clip name (Clip_Information_File_name) in the PlayItem (PlayItem). It includes time information about (Out-Time). Thus, a playlist file (* .mpls) means basic playback control information for at least one or more main AV clips.

In addition, the playlist file (* .mpls) further includes a sub playitem (SubPlayItem), and the sub playitem (SubPlayItem) includes, for example, basic playback control information for a text subtitle stream file.

Within the playitem, there is a stream number table (STN table) that lists the playback streams that can be played back during the playback interval. One of the entries in the stream number table is selected for playback. The stream number table includes a video stream, an audio stream, a text subtitle stream, and the like.

Finally, the auxiliary data directory AUXDATA contains auxiliary data stream files. For example, a font file (e.g., aaaaa.font or aaaaa.otf), a pop-up menu file (not shown), or a sound to provide a click sound ( sound) file (sound.bdmv) may correspond.

The Java object directory (BDJO) contains a BD-J object file (xxxxx.bdjo), and the Java directory (JAR) contains a JAR file (ppppp.jar) containing a Java application application.

3 is a block diagram showing the configuration of an optical disc reproducing apparatus 100 according to an embodiment of the present invention. As shown in FIG. 3, the optical disc player 100 includes a pickup 10, a servo 12, a signal processor 14, a local storage 16, a system memory 18, a microcomputer 20, and an AV decoder. (22), an AV encoder (24), and a control unit (26).

The pickup 10 reads management information including data recorded on the optical disc and reproduction management file information. The servo 12 controls the operation of the pickup 10. The signal processor 14 restores the playback signal received from the pickup 10 to a desired signal value, or modulates the signal to be recorded into a signal recorded on an optical disk, and the microcomputer 20 controls this. .

The control unit 26 downloads data such as contents and applications existing in addition to the optical disk by a user command and stores the data in the local storage 16 and stores the data stored in the optical disk and the data stored in the local storage 16 in response to a user's request. Play along.

System memory 18 stores an application for executing data stored in local storage 16. As described above, the application stored in the system memory 18 can be managed by the manufacturer of the optical disc reproducing apparatus. In this case, the application may be a Java application application, which will be described later.

The playback system 22 finally decodes the data under the control of the controller 26 and provides it to the user. The AV encoder 24 converts an input signal into a signal of a specific format, for example, an MPEG2 transport stream, and provides it to the signal processor 14 under the control of the controller 26 to perform a function of recording a signal on an optical disc. Done.

FIG. 4 is a diagram illustrating a data playback system structure using the optical disk player of FIG. 3. The reproducing system here means a set of reproducing processing means composed of a program (software) and hardware provided in the optical disc reproducing apparatus. It refers to a system for reproducing and managing data recorded on an optical disc loaded in an optical disc reproducing apparatus and data stored in local storage in association thereto.

As shown in FIG. 4, the playback system 600 includes a resident system software (BD-ROM Resident System Software, 610), an application environment (BD-ROM Application Environment, 620), and a player model (BD-ROM Player Model, 630). 3 layers).

Resident system software 610 includes a User Event Manager 612, a Module Manager 614, and a Metadata Manager 616.

In addition, the application environment 620 includes an HDMV module 622 and a BD-J module 624. The HDMV module 622 includes a command processor 622a, and the BD-J module 624 includes an application manager 624a and a Java virtual machine JAVA VM 624b.

The player model 630 includes a playback control engine 632, a presentation engine 634, and a virtual file system 636. The playback control engine 632 again includes playback control functions 632a and a player register 632b.

In the playback system according to the embodiment of the present invention, as separate playback processing management means for reproducing the HDMV title and the BD-J title, the HDMV module 622 for the HDMV title and the BD- for the BD-J title are respectively. J module 624 is configured independently. In particular, the HDMV module 622 and the BD-J module 624 have a control function for receiving a command or a program in the aforementioned object (Movie Object or BD-J Object) and processing the same.

The metadata manager 616 may perform title selection at any time, under the control of the user, and provide the recording medium and title metadata to the user. The HDMV module 622 and the BD-J module 624 separate the command or application from the hardware configuration of the playback system, thereby enabling portability of the command or application. As a means for receiving and processing a command or application, the HDMV module 622 has a command processor 622a, and the BD-J module 624 has a Java virtual machine 624b and an application manager 624a. Each is provided.

The Java virtual machine 624b is a virtual machine on which the application runs. The application manager 624a includes an application management function that manages the life-cycle of the application.

In addition, the module manager 614 transmits a user command to the HDMV module 622 and the BD-J module 624 and controls the operations of the HDMV module 622 and the BD-J module 624.

The playback control engine 632 interprets the playlist file information recorded in the disc according to the playback commands of the HDMV module 622 and the BD-J module 624, and performs the playback function accordingly. In addition, the presentation engine 634 decodes the specific stream reproduced and managed by the reproduction control engine 632 and displays it on the screen. The playback control function 632a of the playback control engine 632 manages the actual playback, and the player register 632b stores player status registers (PSR) and general purpose registers (GPR). do. In some cases, the regeneration control function 632a may mean the regeneration control engine 632.

A separate user command is applied to the HDMV title and the BD-J title, and the method of performing the user commands is independent of each other. The user event manager 612 receives a user command and transmits the command to one of the HDMV module 622 and the BD-J module 624. Accordingly, if the received command is a user command by a user operation (UO), the user event manager 612 transmits the received command to the module manager 614 or the user operation control unit (UO Controller) 612a to perform a user command. do. In addition, if the received command is a user command by a key event, it is transmitted to the Java virtual machine 624b in the BD-J module 624 to perform the user command.

In addition, the metadata manager 616 provides a user with a disc library Disc Library and an enhanced search metadata application.

In the above-described playback system of the present invention, the module manager 614, the HDMV module 622, the BD-J module 624, and the playback control engine 632 are each capable of software processing. In general, processing in software rather than hardware configuration is more useful for design.

However, the presentation engine 634, the decoder 640, and the planes 650 may be designed in hardware. In particular, the component that is processed in software may be configured as one part of the controller. However, this is for illustrating the present invention, the configuration of the present invention should be understood as a function thereof, and is not limited to the hardware configuration or software configuration.

FIG. 5 is a schematic diagram illustrating a file structure of data stored in the system memory of FIG. 3. As shown in FIG. 5, a Java application application (boot.jar) is stored in the system memory.

At this time, the Java application may be composed of a compressed file including the xlet. In this embodiment, the Java application stored in the system memory may be a boot xlet that executes a server connection, receives necessary resources such as image information, sound information, font information, and executes another service xlet.

Using such a Java application, the data of the local storage downloaded from the outside can be executed without the optical disk loaded. That is, the minimum application for executing the external data is stored in the system memory, and the external data is reproduced using this.

These Java applications have a very small data size and can be stored in small system memory. Such a Java application can be managed by the manufacturer of the playback device.

In addition, in an embodiment of the present invention, an index file (index.bdmv) and an object file (MovieObject.bdmv, xxxxx.bdjo) may be further stored in the system memory.

In this case, the optical disc reproducing apparatus can reproduce the external content using the index file and the Java object file (xxxxx.bdjo) and the Java application stored in the system memory.

6 illustrates an example of a file structure of data stored in the local storage of FIG. 3, that is, downloaded from an external source, that is, a local storage file system. As shown, the file structure of the local storage includes a binding unit management file (1.bumf). The binding unit management file includes name mapping information, and the binding unit is configured using this. For example, the list of files that create the binding unit, the files of the binding unit may include information about a location in the virtual file structure and a file name in the virtual file structure.

FIG. 7 illustrates an example for describing a relationship for creating a virtual package structure in an embodiment of the present invention. In this embodiment, a virtual file structure is formed using data stored in system memory and data stored in local storage when the optical disc is not loaded.

The virtual file system (VFS) utilizes name mapping information stored in local storage, and a new virtual file through a binding operation that binds a data structure in the system memory and a binding unit of the local storage. Create a virtual package.

For example, the file structure in the system memory may include an index file (Index.bdmv), a movie object file (MovieObject.bdmv), an auxiliary data file (sound.bdmv), a Java object file (xxxxx.bdjo), and a boot xlet (boot. jar).

According to the name mapping information, the playlist file (Apr2005.mpls) in the binding unit is a playlist file (00000.mpls) in the playlist (PLAYLIST) directory in the virtual file structure (Apr2005.clpi). Is the clip information file (01000.clpi) in the clipinfo (CLIPINF) directory in the virtual file structure, and the stream file (Apr2005.m2ts) is the stream file (01000.m2ts) in the stream (STREAM) directory in the virtual file structure. The file Japanese.otf is renamed as an auxiliary data file 11111.otf in the auxiliary data directory.

In this case, the index file (Index) and the object file (MovieObject) as parent files in the virtual file structure are based on the newly created playlist file (00000.mpls). It can be updated from a file (MovieObject).

Although the preferred embodiments of the present invention have been described above, the present invention is not limited thereto, and various modifications and changes can be made within the scope of the claims and the detailed description of the invention and the accompanying drawings, and the present invention is also provided. Naturally, it belongs to the range of.

1 is a schematic diagram showing a data reproduction management method according to an embodiment of the present invention.

2 is a schematic diagram showing an example of a data file structure of an optical disc.

3 is a block diagram showing an optical disc reproducing apparatus according to an embodiment of the present invention.

4 is a conceptual diagram illustrating a data reproduction system according to an embodiment of the present invention.

5 is a schematic diagram showing an example of a data file structure stored in the system memory.

6 is a schematic diagram illustrating an example of a data file structure stored in local storage.

FIG. 7 is a conceptual diagram illustrating a virtual file structure using data stored in a system memory and local storage.

Claims (14)

Pickup for reading data from the optical disc; Local storage for storing content and external applications provided from external sources; A system memory for storing an internal application for executing the content independently of the optical disc; And Control unit for controlling the pickup, the local storage and the system memory Optical disc playback device comprising a. According to claim 1, And the internal application is a Java application application. The method of claim 2, The Java application application is Xlet information optical disc playback device. The method of claim 3, And the Xlet information is a boot Xlet for executing another Xlet. According to claim 1, And the internal application is managed by the manufacturer of the playback device. 6. The method of claim 5, And the system memory further stores the internal application related data provided from the manufacturer. According to claim 1, And the system memory includes data for binding with data stored on the optical disc. Executing an internal application for executing contents independently of the optical disc stored in the system memory; Downloading content and an external application provided from an external source to the local storage using the internal application; And Playing the content Data playback method using an optical disc playback device comprising a. The method of claim 8, The internal application is a data playback method using an optical disk playback device that is a Java application application. The method of claim 9, The Java application application is a data playback method using an optical disk playback device that is Xlet information. The method of claim 10, And the Xlet information is a boot Xlet for executing another Xlet. The method of claim 8, The internal application is a data playback method using an optical disk playback device managed by the manufacturer of the playback device. The method of claim 12, And the system memory further stores the internal application related data provided from the manufacturer. The method of claim 8, And the system memory includes data for binding with data stored on the optical disc.
KR1020090004719A 2009-01-20 2009-01-20 Apparatus for reproducing optical disc and reproducing method using the same KR20100085437A (en)

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