EP1789972A2 - Procede et appareil permettant la lecture de donnees provenant d'un support d'enregistrement au moyen d'un stockage local - Google Patents

Procede et appareil permettant la lecture de donnees provenant d'un support d'enregistrement au moyen d'un stockage local

Info

Publication number
EP1789972A2
EP1789972A2 EP05786908A EP05786908A EP1789972A2 EP 1789972 A2 EP1789972 A2 EP 1789972A2 EP 05786908 A EP05786908 A EP 05786908A EP 05786908 A EP05786908 A EP 05786908A EP 1789972 A2 EP1789972 A2 EP 1789972A2
Authority
EP
European Patent Office
Prior art keywords
data
file
local storage
recording medium
playlist
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP05786908A
Other languages
German (de)
English (en)
Other versions
EP1789972A4 (fr
Inventor
Kang Soo Seo
Jea Yong Yoo
Byung Jin 111-204 Chonggu APT. KIM
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LG Electronics Inc
Original Assignee
LG Electronics Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by LG Electronics Inc filed Critical LG Electronics Inc
Publication of EP1789972A2 publication Critical patent/EP1789972A2/fr
Publication of EP1789972A4 publication Critical patent/EP1789972A4/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/11—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information not detectable on the record carrier
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
    • 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
    • G11B2220/21—Disc-shaped record carriers characterised in that the disc is of read-only, rewritable, or recordable type
    • G11B2220/213—Read-only discs
    • 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
    • G11B2220/2508—Magnetic discs
    • G11B2220/2516—Hard disks
    • 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
    • G11B2220/2541—Blu-ray discs; Blue laser DVR discs

Definitions

  • the present invention relates to a method and apparatus for reproducing data from a recording medium, and more particularly to a method and apparatus for reproducing data from a recording medium using a local storage contained in an optical recording/reproducing device.
  • an optical disc acting as a recording medium capable of recording a large amount of data therein there has been widely used an optical disc acting as a recording medium capable of recording a large amount of data therein.
  • a high-density optical recording medium capable of recording/storing high-quality video data and high-quality audio data for a long period of time, for example, a Blu-ray Disc (BD) .
  • BD Blu-ray Disc
  • the BD based on the next-generation recording medium technique has been considered to be the next-generation optical recording solution capable of storing much more data than a conventional DVD.
  • many developers have conducted intensive research into the international standard technical specification associated with the BD along with those of other digital devices.
  • the above-mentioned optical recording/reproducing device must consider not only a basic function for recording/reproducing data of the BD, but also an additional function for enabling the optical recording/reproducing device to interact with peripheral digital devices.
  • the optical recording/reproducing device must receive an external input signal, must display the received signal, and must reproduce desired data using the external input signal and the BD.
  • the present invention is directed to a method and apparatus for reproducing data from a recording medium using a local storage that substantially obviate one or more problems due to limitations and disadvantages of the related art.
  • An object of the present invention is to provide a method and apparatus for reproducing data suitable for a recording medium.
  • Another object of the present invention is to provide a method for forming a virtual file structure which includes a local storage capable of receiving/storing data from an external part, and simultaneously reproduces data stored in the local storage and data recorded in a recording medium.
  • a further object of the present invention is to provide a method and apparatus for reproducing both data recorded in a recording medium and data stored in a local storage using a
  • a method for reproducing data of a recording medium using a local storage includes the steps of
  • a method for forming a virtual file structure includes the steps of (a) reading an original playlist file for reproducing original data recorded in a recording medium, and reading an additional playlist file associated with the original playlist file from a local storage; (b) combining the
  • file structure which includes at least one virtual playlist file to reproduce the original data and/or the additional data.
  • an apparatus for reproducing data of a recording medium includes a pickup unit for reading original data from a recording medium; a local storage for storing additional data associated with the original data; and a controller for forming a virtual file system to reproduce the original data and/or the additional data, and forming a virtual file structure including the original data and associated additional data using the virtual file system.
  • FIG. 1 is a conceptual diagram illustrating a method and apparatus for reproducing data from a recording medium according to the present invention
  • FIG. 2 is a conceptual diagram illustrating a file structure recorded in an optical disc acting as a recording medium and a method for reproducing a specific title using the file structure;
  • FIG. 3 is a structural diagram illustrating a data record structure of an optical disc acting as a recording medium according to the present invention
  • FIG. 4a is a block diagram illustrating an optical recording/reproducing device according to the present invention.
  • FIG. 4b is a block diagram illustrating an apparatus for reproducing data using a local storage from among overall
  • FIG. 5 is a conceptual diagram illustrating a method for forming a virtual package capable of reproducing data recorded in a recording medium and data recorded in a local storage according to the present invention
  • FIG. 6a is a conceptual diagram illustrating a method for forming the virtual package using a virtual file system (VFS) on the basis of a file structure according to the present
  • FIG. 6b exemplarily shows a variety of additional data types stored in a local storage according to the present invention.
  • FIGS. 7a ⁇ 7b are conceptual diagrams illustrating a method for forming a virtual playlist (Virtual PlayList) contained in the virtual package in accordance with a first preferred embodiment of the present invention
  • FIG. 8 is a conceptual diagram illustrating a method for forming a virtual playlist (Virtual PlayList) contained in the virtual package in accordance with a second preferred embodiment of the present invention
  • FIG. 9 is a conceptual diagram illustrating a method for forming a virtual playlist (Virtual PlayList) contained in the virtual package in accordance with a third preferred embodiment of the present invention.
  • FIG. 10 is a flow chart illustrating a method for reproducing data from a recording medium using a local storage according to the present invention.
  • a recording medium for use in the present invention is indicative of all storage mediums, for example, an optical disc, and a magnetic tape, etc., according to various recording schemes.
  • the optical disc such as a BD
  • the optical disc will hereinafter be exemplarily used as the above-mentioned recording medium in the present invention. It should be noted that technical ideas of the present invention can be applied to other recording mediums without
  • the term “local storage” is indicative of a storage unit contained in an optical recording/reproducing device 10 shown in FIG. 1.
  • the term “local storage” is indicative of a component capable of receiving necessary information or data from a user, and storing the received information or data.
  • a general local storage may be indicative of a Hard Disc Drive (HDD) , but it should be noted that the term “local storage” of the present invention is not limited to the HDD, and is applicable to other examples as necessary.
  • the term “local storage” is used as a storage unit for storing data associated with a recording medium such as a BD. The data associated with the recording medium is generally downloaded from an external device.
  • the local storage may directly read some permission data from the recording medium, and may generate system data (e.g., metadata) associated with record/reproduction operations of the recording medium, such that the system data may be stored in the local storage.
  • system data e.g., metadata
  • binding unit is indicative of a set of files stored in the local storage.
  • the binding unit is indicative of a specific unit associated with a specific recording medium.
  • the specific unit is combined with or is added to a file contained in the
  • virtual file structure is indicative of a virtual file for simultaneously reproducing data of the recording medium and/or data of the local storage.
  • binding information determines files for forming the binding unit, and controls the execution of the binding operation.
  • the binding information may be formed of a single file for each recording medium.
  • a file for forming the above-mentioned binding information is downloaded from an external device, and is then stored in the local storage.
  • data recorded in the recording medium is referred to as "original data”
  • data associated with the recording medium from among a plurality of data units stored in the local storage is referred to as “additional data” .
  • FIG. 1 is a conceptual diagram illustrating a method and apparatus for reproducing data according to the present invention. Unified usages of the optical recording/reproducing 10 and peripheral devices are shown in FIG. 1.
  • the optical recording/reproducing device 10 can record/reproduce data in/from various optical discs having different formats. If necessary, the optical recording/reproducing device 10 can record/reproduce specific data in/from only a specific optical disc such as a BD, or
  • the present invention uses a BD-player capable of reproducing data from the BD or a BD-recorder capable of recording data in the BD in consideration of correlation between the BD and peripheral devices for the convenience of description. It is well known in the art that the optical recording/reproduction device 10 is also applicable to a drive embedded in a specific device such as a computer.
  • the optical recording/reproducing device 10 records or reproduces data in/from the optical disc 30, receives an external input signal, performs a signal process on the received signal, and transmits the signal processed result to the external display 20, such that a user can view the signal processed result on the display 20.
  • an external input signal may be determined to be a DTV-associated signal and an Internet-associated signal, etc.
  • the Internet is indicative of a communication network to which a user easily gains access, such that the user can download specific Internet data using the optical recording/reproducing device 10, and can use the downloaded data.
  • an enterprise for providing content data used as an external source is generally referred to as a content provider (CP) .
  • CP content provider
  • the present invention aims to reproduce the original data and the additional data at the same time.
  • multiplexed AV (Audio/Video) streams are recorded as the original data recorded in the optical disc, and additional data for use in the Internet is
  • an audio stream different from an audio stream (e.g., Korean) of the original data may download a specific audio stream (e.g., English) acting as additional data from the Internet, may desire to reproduce the downloaded audio stream along with the AV stream acting as original data, or may desire to reproduce only the additional data.
  • a specific audio stream e.g., English
  • correlation between the original data and the additional data must be established, and there is needed a systemized method for managing/reproducing the above- mentioned data according to a user request .
  • the present invention provides a method for implementing the above- mentioned systemized method.
  • additional data may be indicative of audio data, presentation graphic (PG) data, interactive graphic data, or text subtitles, etc., but the additional data may also be indicative of a multiplexed AV stream including the above-
  • data associated with the original data simultaneously existing outside of the optical disc may act as additional data.
  • a predetermined file structure must be established between the original data and the additional data. Accordingly, a file structure and data record structure for use in the BD will
  • FIG. 2 is a conceptual diagram illustrating a file structure for reproducing/managing the original data recorded in an optical disc, and a method for reproducing a specific title according to the file structure. It should be noted that the file structure can also be referred to as a disc package as necessary, as previously stated above.
  • the file structure according to the present invention includes one or more BD directories (BDMV) under a single root directory.
  • BDMV BD directories
  • the BD directory (BDMV) includes not
  • index file "index” acting as a general file i.e., an upper file
  • the file structure includes a variety of directories for storing information of actual data recorded in a disc and other information associated with a method for reproducing the data, for example, a playlist directory (PLAYLIST) , a clip information directory (CLIPINF) , a stream directory (STREAM) , an auxiliary directory (AUXDATA) , and a backup directory (BACKUP) .
  • PLAYLIST playlist directory
  • CLIPINF clip information directory
  • STREAM stream directory
  • AUXDATA auxiliary directory
  • BACKUP backup directory
  • the AUXDATA directory includes an additional data file for reproducing data of the disc.
  • the AUXDATA directory includes a "Sound.bdmv" file for providing a user with sound data when an interactive graphic function is executed, and an "11111.otf" file for providing the user with font information when data of the disc is reproduced.
  • the stream directory (STREAM) includes a plurality of AV stream files recorded in a disc according to a specific format. Generally, individual streams are recorded using an
  • the clip information (Clip-info) directory (CLIPINF) is composed of a plurality of clip-info files (01000.clpi and 02000.clpi) connected to the above-mentioned stream files on a one-to-one basis.
  • the clip-info files (*.clpi) record attribute information and timing information of the stream files (*. ⁇ n2ts) therein.
  • the clip-info files (*.clpi) connected to the stream files (*.m2ts) on a one-to- one basis are generically named a "Clip".
  • a clip recorded in the disc is referred to as an original clip.
  • a clip, which is downloaded and stored in a local storage, is referred to as an additional clip.
  • the playlist directory includes a plurality of playlist files (*.mpls) .
  • Each playlist file (*.mpls) includes one or more playitems (Playltem) and one or more sub-playitems (SubPlayltem) .
  • Each playitem (Playltem) and each sub-playitem (SubPlayltem) are adapted to designate a playing interval during which a specific clip is reproduced.
  • the playitem (Playltem) and the sub-playitem (SubPlayltem) include information associated with a specific clip to be reproduced, i.e., information associated with a reproduction start time (IN-Time) and other information associated with a
  • a process for reproducing data using at least one playitem (Playltem) in the playlist file is referred to as a main path, and a process for reproducing data using individual sub-play items (SubPlayltem) is referred to as a sub-path.
  • the playlist file must contain a single main path.
  • the playlist file may. contain at least one sub-path according to the presence or absence of the sub-playitem (SubPlayltem) as necessary.
  • the playlist file acts as a basic reproduction/management file unit contained in overall reproduction/management file structures for reproducing a
  • Playltem a playitem
  • the backup directory stores a plurality of duplicate files, i.e., a duplicate file (also called “copied files”) of the index file "index” storing information associated with disc reproduction, a duplicate file of the object file "MovieObject” , duplicate files of all playlist files (*.mpls) contained in the playlist directory (PLAYLIST) , and duplicate files of all playlist files (*.mpls) contained in the playlist directory (PLAYLIST) , and duplicate
  • the index file includes first playback information "First Playback” indicative of information associated with a first reproduction image when data of a corresponding disc is loaded, top menu information "Top_Menu” for providing a menu image, and at least one title
  • title menu information associated with the index table is provided to the user via the display 20. If the user selects a specific title or a specific menu contained in
  • a menu image data reproduction begins according to a scenario pre-defined by a disc manufacturer.
  • a command for reproducing a specific title e.g., title #1
  • a specific playlist file is executed according to a command contained in the object file (MovieObject) of the reproduction/management file structure.
  • FIG. 3 is a structural diagram illustrating a data record structure recorded in a recording medium according to the present invention.
  • FIG. 3 shows a disc record format of information associated with the file structure. As shown in FIG.
  • the above-mentioned disc structure sequentially includes a file system information area serving as system information for managing overall files, a database area for recording a playlist file and a clip-info file to reproduce a recorded AV stream (*.m2ts) , and an AV stream area for recording a plurality of streams composed of audio data, video data, and graphic data, etc.
  • a file system information area serving as system information for managing overall files
  • a database area for recording a playlist file and a clip-info file to reproduce a recorded AV stream (*.m2ts)
  • an AV stream area for recording a plurality of streams composed of audio data, video data, and graphic data, etc.
  • data recorded in the AV stream area may be determined to be original data as previously stated above.
  • FIG. 4a is a block diagram illustrating the optical recording/reproducing device 10 according to the present invention.
  • the optical recording /reproducing device 10 includes a pickup unit 11, a servo unit 14, a signal processor 13, and a microprocessor 16.
  • the pickup unit 11 reproduces original data recorded in the optical disc and management information including reproduction/management file information.
  • the servo unit 14 controls operations of the pickup unit 11.
  • the signal processor 13 receives a reproduction signal from the pickup unit 11, restores the received reproduction signal to a desired signal value, or modulates a signal to be recorded into another signal recorded in the optical disc, such that it transmits the restored or modulated result.
  • the microprocessor 16 controls mutual operations of the above-mentioned components.
  • a controller 12 downloads additional data existing outside of the optical disc upon receiving a command from a user, stores the downloaded additional data in the local storage 15, and configures a virtual file system (VFS) to reproduce the original data recorded in the optical disc and the additional data stored in the local storage.
  • the controller 12 forms a virtual package including the original data and associated additional data using the VFS, and reproduces the original data and/or the additional data using the formed virtual package upon receiving a request from a user.
  • VFS virtual file system
  • a decoder 17 finally decodes output data (i.e., original data and/or additional data) upon receiving a control signal from
  • controller 12 provides the user with the decoded result .
  • An encoder 18 converts an input signal into a specific format signal (e.g., an MPEG2 transport stream) upon receiving a control signal from the controller 12, and transmits the converted result to the signal processor 13.
  • a specific format signal e.g., an MPEG2 transport stream
  • the new virtual package may be stored in the local storage 15 such that it can be re-used in future. Also, the new virtual package may be temporarily stored in an additional dynamic memory, and may then be used.
  • FIG. 4b is a block diagram illustrating an apparatus for reproducing data of an optical disc using a local storage from among overall components contained in the optical
  • the local storage 15 stores file information (Directory-File Tree Information for Disc_id #n) including directories and files for every individual disc identification (ID) information, and a plurality of additional clips downloaded from an external part.
  • the local storage 15 may further store binding information for a binding operation associated with a disc package, and a plurality of files (Content Identifying Info files) for explaining content data stored in the local storage 15.
  • the local storage 15 may include a plurality of
  • the local storage 15 additionally requires a file system for managing the above-mentioned file information units.
  • the file system is also referred to as a local storage file system 41, and the local storage file system 41 is indicative of a system for managing all files stored in the local storage 15.
  • the controller 12 contained in the optical recording/reproducing device 10 recognizes ID information of the disc using the pickup unit 11 and the signal processor 13, reads file information equal to the loaded disc ID information from among all file information units stored in the local storage 15, forms a virtual package by binding (or combining) the read information and the disc package, and reproduces both
  • FIG. 5 is a conceptual diagram illustrating a method for forming the above-mentioned virtual package according to the present invention.
  • the optical recording/reproducing device 10 reads the file system information 41 contained in the local storage 15, and at the same time reads disc file system information 42 including the file structure recorded in the disc, resulting in the creation of the VFS.
  • the virtual file system (VFS) is indicative of a file system virtually formed to manage both the file system contained in the local storage 15 and the other file system of the loaded
  • the optical recording/reproducing device forms a new virtual package to simultaneously reproduce original data recorded in the disc and additional data recorded in the local storage using the above-mentioned virtual file system (VFS) .
  • the optical recording/reproducing device 10 reads file information (Directory-File Tree Information for Disc_id #n) associated with the disc (e.g., Disc_id #1) from the file system, and performs a binding operation for combining the read file information with a disc package of the loaded disc (Disc_id #1) or adding the read file information to the disc package.
  • the virtual package formed by the above-mentioned binding operation is indicative of a file structure for reproducing/managing an original clip 422 and an additional clip 412.
  • the original clip 422 is composed of original data recorded in the disc.
  • the additional clip 412 is composed of additional data recorded in the local storage.
  • FIG. 6a is a conceptual diagram illustrating a method for forming the virtual package using a virtual file system (VFS) on the basis of a file structure according to the present invention.
  • VFS virtual file system
  • a specific disc package (e.g., the structure of FIG. 2) is recorded in the loaded disc.
  • a local storage file system 41 is contained in the local storage.
  • the local storage file system 41 includes a binding unit and binding information, which are combined with the loaded disc (e.g., Disc_id #1) .
  • the binding unit is similar to the disc package.
  • the binding unit may include a playlist file having the same name as that of a specific playlist file contained in the disc, such that it can be combined with the specific playlist file.
  • the binding unit cannot be operated as a reproduction/management file by
  • this data reproduction is similar to data reproduction of the local storage, such that the above-
  • binding unit is contrary to the purpose of the present invention for simultaneously reproducing both original data recorded in the disc and additional data recorded in the local storage.
  • the binding information includes a variety of information units associated with the binding unit, for example, file types of the binding unit, update times of the binding unit, and a binding method, etc.
  • the virtual file system performs a binding operation for combining the binding unit with the disc package of the loaded disc using the above-mentioned binding information, such that it forms a new virtual package. For example, if the binding unit associated with the loaded
  • disc (e.g., Disc_id #1) includes a first playlist file
  • the first playlist file (00000.mpls) contained in the binding unit is combined with a second playlist file (00000.mpls) contained in the disc package, resulting in the creation of a virtual package including a new playlist file (00000.mpls) .
  • the second playlist file (00000.mpls) has the same file name as that of the first playlist file (00000.mpls) ) .
  • the playlist file 61 contained in the disc package is referred to as an original playlist file 62 (Original PLayList)
  • the playlist file 62 contained in the binding unit is referred to as an additional playlist file (additional PlayList)
  • the playlist file 63 formed by combining the original playlist file 61 with the additional playlist file 62 is referred to as a virtual playlist file 63 (virtua PlayList)
  • the clip-info files (*.clpi) and the stream files (*.m2ts) other than the virtual playlist file 63 in the virtual package are contained in the virtual package so as to achieve their unified management only.
  • index file (index) and the object file (MovieObject) act as upper files, and may be updated from a conventional index file (index) and a conventional object file (MovieObject) on the basis of the virtual playlist file 63.
  • the above-mentioned update operation occurs when the title is changed to another by the virtual playlist file 63. For example, if the addition of a new title, the deletion of a conventional title, or the change of a title reproduction scenario occurs, the above-mentioned update operation of the index and object files (index, MovieObject) .
  • the file system structure 41 contained in the local storage includes a file structure for managing downloaded additional data.
  • the file structure includes ⁇ Org_id" directories for every content provider (CP) for providing additional data,
  • the "Disc_id” directories are configured in the form of a hierarchial structure. Provided that the "Org_id #1" directory is determined to be a directory of a specific company "A" providing contents, the
  • the virtual package has the same structure as the disc package. Specifically, the virtual package includes a virtual playlist file 63 newly formed by the binding operation. By a reproduction/management method of the newly-formed virtual playlist file 63, an original clip (e.g., a clip-info file (01000.clpi) ) and a stream file
  • the virtual playlist file 63 contained in the virtual package serves as a basic reproduction/management file for simultaneously reproducing both original data recorded in the disc , and additional data recorded in the local storage.
  • FIG. 6b exemplarily shows a variety of additional data types stored in the local storage according to the present invention. Specifically, FIG. 6b shows five additional data types according to additional data attributes.
  • the additional data type #1 includes a plurality of data units for assisting the original data, for example, audio data, presentation graphic (PG) data, interactive graphic (IG) data, and text subtitle data (Text Subtitle) , etc.
  • the additional data type #1 is combined with the original playlist file 61 via a sub-path contained in the additional playlist file 62, and a detailed description thereof will hereinafter be described with reference to FIGS. 7a ⁇ 7b.
  • the additional data type #2 includes a plurality of multiplexed-clip AV streams which are replaced with original data or are appended to the original data.
  • the additional data type #2 is mainly combined with the original playlist 61 via a main path contained in the additional playlist 62, and a detailed description thereof will hereinafter be given with reference to FIG. 8.
  • the additional data type #3 includes a plurality of data units (denoted by "Database only") associated with conversion of a reproduction scenario for reproducing original data. For example, in the case where the order of the playitems contained in the playlist is changed, or the index file (index) or the object file (MovieObject) is changed, this means that only a reproduction/management file is changed/added with the absence of an actual additional clip.
  • the above-mentioned additional data type #3 is associated with the above-mentioned case.
  • the additional data type #3 is combined with the original playlist 61 using a main path contained in the additional playlist 62 according to a changed scenario, or is combined with the original index
  • the additional data type #4 includes a plurality of data units (Auxdata) associated with the auxiliary directory (AUXDATA) contained in the file structure.
  • the additional data type #4 is associated with the addition of click sound information or the addition of a font file for a text subtitle.
  • the additional data type #4 is combined with the original sound file (sound.bdmv) or the original font file (*.otf) in the disc file structure using the additional sound file (sound.bdmv) and/or the additional font file
  • the additional data type #5 includes a plurality of data units used as system reproduction information.
  • the additional data type #5 is associated with Java application data (indicative of a BD reproduction mode) and/or system information used as system information.
  • the additional data type #5 is combined with associated data contained in a system.
  • FIGS. 7a ⁇ 7b are conceptual diagrams illustrating a method for forming the virtual playlist 63 in accordance with a first preferred embodiment of the present invention. Particularly, a method for employing a sub-path and a binding operation of the above-mentioned additional data type #1 are shown in FIGS.
  • the original playlist 61 in the disc includes two playitems (Playlteras #1 and #2) contained in a main path and a single sub-playitem (SubPlayltem #1) contained in a sub-path.
  • the original clip #1 indicative of a multiplexed AV stream is reproduced/managed by the playitem #1 contained in the main path.
  • the original clip #2 indicative of a multiplexed AV stream is reproduced/managed by the playitem #2 contained in the main path.
  • each multiplexed AV stream includes video data, audio data, and graphic data.
  • the original clip #3 constructing the text subtitle stream is reproduced/managed by the sub- playitem #1 (SubPlayltem #1) contained in the sub-path.
  • the additional playlist 62 contained in the local storage does not include a main path, and includes a sub-playitem #2 (SubPlayltem #2) contained in a first sub- path #A and a sub-playitem #3 (SubPlayltem #3) contained in a second sub-path #B.
  • the additional clip #1 constructing a Japanese audio stream is reproduced/managed by the sub- playitem #2 (SubPlayltem #2) contained in the sub-path #A.
  • the additional clip #2 constructing a Chinese audio stream is reproduced/managed by the sub-playitem #3 (SubPlayltem #2)
  • the virtual playlist 63 is formed by combining the original playlist 61 with the additional playlist 62.
  • the virtual playlist 62 is formed using the binding information.
  • a binding method can be determined by the above-mentioned binding information. For example, a binding method for adding two sub-paths #A and #b contained in the
  • additional playlist 62 to the original playlist 61 can also be determined by the binding information.
  • the virtual file system (VFS) performs the binding operation, it forms a new virtual playlist 63 by referring to the original and additional playlists 61 and 62 and/or the binding information, such that the virtual package including at least one newly-formed virtual playlist 63 is formed.
  • the binding operation can also be performed by a predetermined binding method without using the binding information.
  • the main path contained in the newly-formed virtual playlist 63 has the same structure as that of the original playlist 61.
  • the sub-path #1 has the same structure as that of the sub-path contained in the original playlist 61.
  • the sub-path #2 and the sub-path #3 have the same structures as those of the sub-paths #A and #B contained in the additional playlist 62.
  • the newly-formed virtual playlist 63 requires specific information for managing streams contained in the single main
  • STN_Table STN_Table
  • PID_table Type and attribute information of streams selectable by a user are contained in the "STN_Table” or “PID_table” information.
  • the system provides the user with information for allowing a specific sub-path to be selectively reproduced by the user with reference to the above-mentioned type and attribute information of the user-
  • FIG. 7b is a structural diagram illustrating an additional data type #1 capable of being added as a sub-path according to the first preferred embodiment of the present invention.
  • the additional data type #1 capable of being added as the sub-path is classified into 6 data types, for example, a first additional clip #1 (denoted by "Sync type Audio stream”) / a second additional clip #2 (denoted by "Non-Sync type audio stream”) , a third additional clip #3
  • the first additional clip #1 synchronizes an additional audio stream with original data.
  • the second additional clip #2 does not synchronize the additional audio stream with the original data.
  • the additional clip #3 includes only a text subtitle.
  • the additional clip #4 includes only a presentation graphic (PG) stream.
  • the additional clip #5 includes only an interactive graphic (IG) stream.
  • the additional clip #6 is formed by multiplexing at
  • the number of sub-paths contained in the virtual playlist 63 can be determined to be a plural number, there is a limitation in the number of sub-paths capable of being
  • FIG. 8 is a conceptual diagram illustrating a method for employing a main path according to the second preferred embodiment for forming the virtual playlist 63. Specifically, the binding operation of the above-mentioned additional data type #2 is shown in FIG. 8.
  • the additional data type #2 adds the additional clip composed of a multiplexed AV stream to the disc, or is used as data for substituting for a specific original clip.
  • the original playlist 61 in the disc includes two playitems (Playltems #1 and #2) contained in a main path and a single sub-playitem (SubPlayltem #1) contained in a sub-path.
  • the original clip #1 indicative of a multiplexed AV stream is reproduced/managed by the playitem #1 contained in the main path.
  • the original clip #2 indicative of a multiplexed AV stream is reproduced/managed by the playitem #2 contained in the main path.
  • each multiplexed AV stream includes video data, audio data, and graphic data.
  • the original clip #3 constructing the text subtitle stream is reproduced/managed by the sub- playitem #1 (SubPlayltem #1) contained in the sub-path.
  • each multiplexed AV stream includes video data, audio data, and graphic data.
  • a binding method can be determined by the above-mentioned binding information.
  • a binding method for replacing the playitem #2 contained in the original playlist 61 with the playitem #3 contained in the additional playlist 62 can be determined by the binding
  • the finally-formed virtual playlist 63 includes the playitem #1 for reproducing/managing the original clip #1 and the playitem #3 for reproducing/managing the additional
  • FIG. 9 is a conceptual diagram illustrating a method for employing a main path according to the third preferred embodiment for forming the virtual playlist 63. Specifically, the binding operation of the above-mentioned additional data type #3 is shown in FIG. 9.
  • the additional data type #3 is associated with a specific case in which a reproduction scenario of the original data is changed without addition of an additional clip. Specifically, the additional data type #3 is associated with a method for
  • the original playlist 61 in the disc includes two playitems (Playltems #1 and #2) contained in a main path and a single sub-playitem (SubPlayltem #1) contained in a sub-path.
  • the original clip #1 indicative of a multiplexed AV stream is reproduced/managed by the playitem #1 contained in the main path.
  • the original clip #2 indicative of a multiplexed AV stream is reproduced/managed by the playitem #2 contained in the main path.
  • each multiplexed AV stream includes video data, audio data,
  • the original clip #3 constructing the text subtitle stream is reproduced/managed by the sub- playitem #1 (SubPlayltem #1) contained in the sub-path. Particularly"/ a first reproduction scenario for performing
  • the additional playlist 62 in the local storage includes two playitems #3 and #4 (Playltem #3 and Playltem #4) in a main path.
  • the original clip #3 is reproduced/managed by the playitem #3 (Playltem #3) of the main path.
  • the original clip #1 is reproduced/managed by the playitem #4 (Playltem #4) of the main path.
  • a binding method can be determined by the above-mentioned binding information. For example, a binding method for replacing the playitem #1 contained in the original playlist 61 with the playitem #3 contained in the additional playlist
  • a binding method for replacing the playitem #2 contained in the original playlist 61 with the playitem #4 contained in the additional playlist 62 can be determined by the binding information.
  • the finally-formed virtual playlist 63 includes the playitem #3 for reproducing/managing the original clip #3 and the playitem #4 for reproducing/managing the additional clip #1 in the main path. Also, the finally-formed virtual playlist 63 includes a sub-playitem #1 for reproducing/managing the original clip #3 in the sub-path. In other words, the above-mentioned virtual playlist 63 includes a second reproduction scenario for performing data
  • an additional index file or an additional object file may also be adapted to change the reproduction scenario to another scenario.
  • an index file contained in the virtual package is formed by combining the additional index file contained in the local storage with the original index file contained in the disc
  • an object file contained in the virtual package is formed by combining the additional object file contained in the local storage with the original object file contained in the disc.
  • the binding operation replaces the additional index file or the additional object file contained in the local storage with the original index file or the original object file contained in the disc, such that the replaced files can be included in the virtual package.
  • the additional playlist file contained in the binding unit is directly replaced with the original playlist file contained in the disc by the binding operation, such that the replaced files can be contained as virtual playlist files in the virtual file structure.
  • the replaced additional playlist file name and the replaced original playlist file name must be defined in the binding information.
  • the first preferred embodiment, the second preferred embodiment, and the third preferred embodiment can be integrated into one example, such that the integrated example can also be applied to the present invention.
  • specific auxiliary reproduction data for example, specific auxiliary reproduction data
  • multiplexed AV stream may also be added to the result of the first preferred embodiment via the main path according to the second preferred embodiment .
  • a plurality of virtual playlists 63 are contained in the
  • the virtual playlist bound by the first preferred embodiment of FIG. 7a, the virtual playlist bound by the second preferred embodiment of FIG. 8, and the virtual playlist bound by the third preferred embodiment of FIG. 9 may also be contained in a single virtual package. It will be obvious to those skilled in the art that this example is a modified example of the present invention.
  • FIG. 10 is a flow chart illustrating a method for reproducing data from a recording medium using a local storage according to the present invention.
  • the optical recording/reproducing device recognizes disc ID information (Disc_id) , and determines whether additional data including a binding unit, which has the same disc ID information (Disc_id) as that of the loaded disc, is present in the local storage at step SlO. If it is determined that the binding unit is present in the local storage at step SlO, the optical recording/reproducing device determines whether the binding operation for combining the binding unit with a file structure contained in a recording medium is performed at step S20. The optical recording/reproducing device forms the virtual package using the binding operation, and reproduces original data recorded in the disc and/or additional data recorded in the local storage using the formed virtual package at step S202. If the binding unit is not present in the local storage at step SlO
  • step SlO the optical recording/reproducing device reproduces original data using only the disc package recorded in the disc at step SlOl. If the binding operation is not required at step S20, the optical recording/reproducing device reproduces original data using only the disc package recorded in the disc at step S201.
  • a predetermined step which determines whether the loaded disc type is indicative of a disc for allowing disc data to be simultaneously reproduced along with additional data recorded in the local storage, may be further positioned prior to the above step SlO.
  • a disc e.g., a BD-ROM
  • the reproduction method shown in FIG. 10 is performed.
  • a disc e.g., a BD-ROM
  • the above-mentioned reproduction method shown in FIG. 10 is not performed, but the optical recording/reproducing device reproduces only the original data recorded in the disc.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Management Or Editing Of Information On Record Carriers (AREA)
  • Television Signal Processing For Recording (AREA)
  • Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)

Abstract

La présente invention se rapporte à un procédé et à un appareil permettant la lecture de données provenant d'un support d'enregistrement au moyen d'un stockage local. Ledit procédé de lecture des données d'un support d'enregistrement au moyen d'un stockage local consiste (a) à lire une unité de liaison associée à un support d'enregistrement spécifique issu du stockage local; (b) à former une structure de fichiers virtuels au moyen d'une opération de liaison permettant de combiner l'unité de liaison à une structure de fichiers enregistrés sur le support d'enregistrement; et (c) à lire les données contenues sur le support d'enregistrement et/ou les données contenues dans le stockage local au moyen de la structure de fichiers virtuels formée.
EP05786908A 2004-09-13 2005-09-13 Procede et appareil permettant la lecture de donnees provenant d'un support d'enregistrement au moyen d'un stockage local Withdrawn EP1789972A4 (fr)

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US60888404P 2004-09-13 2004-09-13
US61708004P 2004-10-12 2004-10-12
KR20040096846 2004-11-24
PCT/KR2005/003023 WO2006031054A2 (fr) 2004-09-13 2005-09-13 Procede et appareil permettant la lecture de donnees provenant d'un support d'enregistrement au moyen d'un stockage local

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EP1789972A2 true EP1789972A2 (fr) 2007-05-30
EP1789972A4 EP1789972A4 (fr) 2009-12-30

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EP (1) EP1789972A4 (fr)
JP (1) JP2008517355A (fr)
KR (1) KR20070057821A (fr)
BR (1) BRPI0514990A (fr)
WO (1) WO2006031054A2 (fr)

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BRPI0409003A (pt) 2003-11-10 2006-03-28 Matsushita Electric Ind Co Ltd meio de gravação, aparelho de reprodução, programa, método de reprodução, circuito integrado do sistema
JP5552928B2 (ja) * 2010-07-08 2014-07-16 ソニー株式会社 情報処理装置、および情報処理方法、並びにプログラム

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KR20070057821A (ko) 2007-06-07
WO2006031054A3 (fr) 2007-08-09
WO2006031054A2 (fr) 2006-03-23
BRPI0514990A (pt) 2008-07-01
EP1789972A4 (fr) 2009-12-30
JP2008517355A (ja) 2008-05-22

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