EP1817773A2 - Procede et appareil pour la reproduction de donnees a partir d'un support d'enregistrement utilisant une memoire locale - Google Patents

Procede et appareil pour la reproduction de donnees a partir d'un support d'enregistrement utilisant une memoire locale

Info

Publication number
EP1817773A2
EP1817773A2 EP05819111A EP05819111A EP1817773A2 EP 1817773 A2 EP1817773 A2 EP 1817773A2 EP 05819111 A EP05819111 A EP 05819111A EP 05819111 A EP05819111 A EP 05819111A EP 1817773 A2 EP1817773 A2 EP 1817773A2
Authority
EP
European Patent Office
Prior art keywords
file
binding unit
binding
contained
disc
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Withdrawn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
EP05819111A
Other languages
German (de)
English (en)
Other versions
EP1817773A4 (fr
Inventor
Kang Soo 104-1504 Chowon APT. 898 SEO
Jea Yong 205-808 Ssangyong APT. YOO
Byung Jin 111-204 Chonggu APT. Hansolmaeul KIM
Kun Suk 707-1103 Chowon APT. KIM
Min Jae 501-1403 Jugong APT. Keumhwamaeul CHON
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
Priority claimed from KR1020050047141A external-priority patent/KR20060063597A/ko
Application filed by LG Electronics Inc filed Critical LG Electronics Inc
Publication of EP1817773A2 publication Critical patent/EP1817773A2/fr
Publication of EP1817773A4 publication Critical patent/EP1817773A4/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Withdrawn legal-status Critical Current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
    • G11B27/02—Editing, e.g. varying the order of information signals recorded on, or reproduced from, record carriers
    • G11B27/031—Electronic editing of digitised analogue information signals, e.g. audio or video signals
    • G11B27/034—Electronic editing of digitised analogue information signals, e.g. audio or video signals on discs
    • 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
    • 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.
  • an apparatus for reproducing data from the recording medium to simultaneously reproduce the external input signal and data of the BD has not yet been established, such that many limitations and problems occur in developing a BD-based optical recording/reproducing device.
  • 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.
  • a method for reproducing data from a recording medium using a local storage comprises the steps of: a) forming a binding unit from among data stored in the local storage; b) binding the binding unit with files contained in the recording medium using binding information, and forming a virtual package, wherein a file of the binding unit has binding priority when the file contained in the binding unit is equal to a file contained in the recording medium; and c) reproducing data recorded in the recording medium and data stored in the local storage using the formed virtual package.
  • a method for forming a virtual package comprising the steps of: a) forming a binding unit using a binding unit manifest file from among data stored in the local storage; and b) binding the binding unit with files contained in the recording medium, and forming a virtual package using the binding unit manifest file, wherein a file of the binding unit has binding priority when the file contained in the binding unit is equal to a file contained in the recording medium on the basis of the binding unit manifest file.
  • an apparatus for reproducing data from a recording medium using a local storage comprising: a pickup unit for reading original data from the recording medium; a local storage for storing additional data associated with the original data contained in the recording medium; and a controller for forming a virtual file system to reproduce the original data and/or the additional data, and forming a virtual package to reproduce the original data and/or the additional data using the virtual file system, wherein, if a specific file contained in the additional data is equal to a specific file contained in the recording medium, higher priority is assigned to the file of the additional data.
  • 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 components contained in the optical recording/reproducing device according to the present invention
  • FIG. 5 is a conceptual diagram illustrating a method for forming a virtual package capable of simultaneously reproducing data recorded in a recording medium and data recorded in a local storage according to the present invention
  • FIG. 6 is a structural diagram illustrating a binding unit of a local storage for forming a virtual package according to the present invention
  • FIG. 7 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
  • FIGS. 8a ⁇ 8b are conceptual diagrams illustrating a method for forming/reproducing a virtual package in accordance with a first preferred embodiment of the present invention, specifically, a method for performing a binding operation for combining a binding unit configured in disc units (i.e., a binding unit per disc) with a recording-medium file structure (i.e., a disc package) such that it forms/reproduces a virtual package;
  • FIGS. 9a ⁇ 9c are conceptual diagrams illustrating a method for forming/reproducing a virtual package in accordance with a second preferred embodiment of the present invention, specifically, a method for performing a binding operation for combining a binding unit configured in title units (i.e., a binding unit per title) with a recording-medium file structure (i.e., a disc package) such that it forms/reproduces a virtual package; and
  • FIGS. 10a ⁇ 10b are conceptual diagrams illustrating a method for forming/reproducing a virtual package in accordance with a third preferred embodiment of the present invention, specifically, a method for performing a binding operation for combining a binding unit configured in content units (i.e., a binding unit per content) with a recording-medium file structure (i.e., a disc package) such that it forms/reproduces a virtual package.
  • a binding unit configured in content units i.e., a binding unit per content
  • a recording-medium file structure i.e., a disc package
  • a recording medium for use in the present invention is indicative of all recordable 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
  • 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 indicative of 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 set of information (i.e., information set) associated with a specific recording medium.
  • information set is combined with or is added to a file contained in the recording medium, such that it can simultaneously reproduce data of the recording medium and data of the local storage.
  • 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 can reproduce the data from the optical disc without recording the data in the same.
  • the present invention exemplarily 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.
  • 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.
  • representative external input signals 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.
  • a person 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
  • additional data for use in the Internet is an audio stream different from an audio stream (e.g., Korean) of the original data.
  • some users 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.
  • additional data may be indicative of audio data, presentation graphic (PG) data, interactive graphic (IG) data, or text subtitle, etc., but the additional data may also be indicative of a multiplexed AV stream including the above- mentioned data and video data.
  • data associated with the original data simultaneously existing in the 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.
  • the file structure according to the present invention includes one or more BD directories (BDMV) under a single root directory.
  • the BD directory (BDMV) includes not only an index file "index" acting as a general file (i.e., an upper file) capable of guaranteeing user interactivity, but also the above-mentioned object.
  • 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) .
  • the AUXDATA directory includes an additional data file for reproducing data of the disc.
  • the AUXDATA directory includes a "Sound.bdr ⁇ v" 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 MPEG-2 based transport packet, and the stream directory (STREAM) uses extension names of stream files (01000.m2ts and 02000.m2ts) as a specific extension name "*.m2ts". Particularly, if video/audio/graphic information from among the above-mentioned streams is multiplexed, the multiplexed information is called an AV stream, and a single title is composed of at least one AV stream file.
  • 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 (*.m2ts) therein.
  • the playlist directory includes a plurality of playlist files (*.mpls) .
  • Each playlist file 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 reproduction termination time (OUT-Time) of the specific clip.
  • 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 desired clip by combination of one or more playitems (Playltem) .
  • 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 clip-info files (*.clpi) contained in the clip- info directory (CLIPINF) .
  • 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)
  • duplicate files of all clip-info files *.clpi
  • 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. In other words, if the user enters 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. Thereafter, one or more clips (e.g., Clip #1
  • FIG. 3 is a structural diagram illustrating a data record structure recorded in a recording medium according to the present invention. In more detail, 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.
  • data recorded in the AV stream area may be determined to be original data as previously stated above.
  • the present invention provides a method and apparatus for simultaneously reproducing original data (e.g., a file structure shown in FIG. 2) recorded in the disc and additional data recorded in the local storage, and a variety of preferred embodiments according to the present invention will hereinafter be described.
  • 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 reguest from a user.
  • the local storage includes a binding unit whose additional data associated with original data is configured in disc units, title units, or content units.
  • the virtual package formed by the controller 12 includes at least one virtual playlist including at least one playitem capable of reproducing a plurality of clips.
  • a decoder 17 finally decodes output data (i.e., original data and/or additional data) upon receiving a control signal from the controller 12, and 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.
  • 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 recording/reproducing device 10 according to the present invention.
  • 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.
  • 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.
  • a binding unit of the local storage 15 is formed, and the local storage 15 may store binding unit manifest information for a binding operation associated with a disc file structure (i.e., a disc package) .
  • the local storage 15 may include a plurality of file information units (Directory-File for Disc__id #n dependent) to cope with different discs. Therefore, 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.
  • an optical disc e.g., disc__ID #1
  • disc_ID a specific disc ID
  • 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. If the local storage 15 stores file information, the controller reads binding unit 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 to simultaneously reproduce data of a recording medium and data of a local storage according to the present invention.
  • the optical recording/reproducing device 10 If a specific disc is loaded in the optical recording/reproducing device 10 on the condition that the information and contents shown in FIG. 4b are stored in the local storage 15, 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 disc.
  • 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 binding unit manifest information from a file system of the local storage 15, and firstly forms a binding unit according to the binding unit manifest information.
  • the optical recording/reproducing device 10 performs a binding operation which replaces the binding unit manifest information with a disc package of the loaded disc (disc__ID #1) , adds the binding unit manifest information to the disc package, or merges the binding unit manifest information with the disc package.
  • the binding unit manifest files includes a variety of information, for example, "Files and Titles Relation List" information indicative of a relationship between files and titles, name mapping information indicative of mapping locations of all files of the binding unit in the virtual package, progressive playlist information for a progressive playlist, and credential information.
  • "Files and Titles Relation List" information indicative of a relationship between files and titles
  • name mapping information indicative of mapping locations of all files of the binding unit in the virtual package
  • progressive playlist information for a progressive playlist for a progressive playlist
  • credential information Specifically, a file indicated by the aforementioned name mapping information forms the binding unit.
  • FIG. 6 is a structural diagram illustrating a binding unit of a local storage for forming a virtual package according to the present invention.
  • the above-mentioned local storage file structure of FIG. 6 includes an organization directory (e.g., org_ID #1) indicative of a content provider (CP) equal to a disc author in a binding unit data (BindingUnitData) directory.
  • the organization directory e.g., org_ID #1
  • the organization directory (org_ID #1) includes a disc directory (disc_ID #1) and a shared directory (e.g., Shared) .
  • the disc directory (disc_ID #1) is indicative of a unique directory for each disc manufactured by a corresponding content provider (CP)
  • the shared directory (Shared) is indicative of a directory shared by all discs manufactured by a corresponding content provider (CP) .
  • the disc directory (disc_ID #1) includes a binding unit manifest file (disc_ID #l.bumf) and a BD directory (BDMV) .
  • the BD directory (BDMV) includes two playlist files (i.e., May2005.mpls and Apr2005.mpls) , two clip-info files (i.e., May2005.clpi and Apr2005.clpi) , and two stream files (i.e., May2005.m2ts and Apr2005.m2ts) .
  • the shared directory (Shared) includes an AUXDATA (auxiliary data) file (e.g., Chinese. otf) .
  • the binding unit manifest file (disc_ID #l.bumf) contained in the disc directory (disc_ID #1) includes information for forming the binding unit.
  • the aforementioned binding unit manifest file (disc_ID #l.bumf) includes name mapping information indicating specific files (e.g., May2005.mpls, May2005.clpi, and May2005.m2ts) contained in the BD directory (BDMV) , and includes other name mapping information indicating a specific file "Chinese.otf" contained in the shared directory.
  • the aforementioned files designated by the name mapping information form the binding unit.
  • FIG. 7 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.
  • a specific file structure i.e., the disc package 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 shared area binding unit and the disc specific area binding unit are formed by the binding unit manifest file.
  • binding unit includes the shared area binding unit and the disc specific area unit.
  • the binding unit cannot be operated as a reproduction/management file by itself, differently from the disc package. If it is assumed that the binding unit is designed to perform data reproduction by itself, this data reproduction is similar to data reproduction of the local storage, such that the above- mentioned operations of the binding unit are 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 virtual file system (VFS) 40 performs a binding operation for combining the shared area binding unit and the disc specific area binding unit contained in the binding unit of the local storage with the disc package of the loaded disc using the above-mentioned binding information, such that it forms a new virtual package.
  • a method for forming the virtual package will hereinafter be described.
  • the binding operation is executed in the
  • FIG. 7 shows a binding unit associated with a loaded disc (e.g., disc_ID #1) .
  • the shared directory (Shared) includes the playlist file (00000.mpls) 65, a clip (i.e., a clip-info file "02000.dpi") managed by the playlist file (00000.mpls) 65, and a stream file (02000.m2ts) .
  • the disc directory includes a file group 62 composed of an index file “index,bdmv” and an object file “MovieObject.bdmv” 62 to construct index table information, a specific playlist file "00001.mpls” 66, and an AUXDATA file “sound.bdmv” for storing auxiliary data (AUXDATA) .
  • the virtual file system 40 performs the binding operation according to the binding information.
  • a file group 61 composed of the index/object files "index.bdmv” and “MovieObject.bdmv” contained in the disc package is replaced with the aforementioned file group 62 composed of the index/object files "index.bdmv” and "MovieObject.bdmv” contained in the disc specific area binding unit, such that the index/object files "index.bdmv” and "MovieObject.bdmv” 63 contained in the virtual package 51 are configured.
  • the index/object files "index.bdmv” and “MovieObject.bdmv” 62 contained in the disc specific area binding unit are downloaded from a content provider (CP) acting as an external input source.
  • CP content provider
  • the content provider (CP) pre-transmits index/object files suitable for a binding structure formed after the binding operation is completed.
  • the playlist file (00001.mpls) 67 is configured in the virtual package by replacing the playlist file 64 with the other playlist file 65 of the shared area binding unit having earlier priority.
  • the playlist file (00001.mpls) 66 contained in the disc specific area binding unit has a file name different from the playlist file (00000.mpls) 65 of the shared area binding unit and the playlist file (00000.mpls) 64 of the disc package. Therefore, the playlist file (00001.mpls) 66 is additionally appended or added to the newly-formed virtual package, resulting in the configuration of the playlist file (00001.mpls) 68.
  • a first file structure configured in disc units (i.e., per disc) when a virtual package a second file structure configured in title units (i.e., per title) when a virtual package is formed by the binding operation, and a third file structure configured in content units (i.e., per content) when a virtual package is formed by the binding operation,
  • FIGS. 8a ⁇ 8b are conceptual diagrams illustrating a method for forming/reproducing a virtual package in accordance with a first preferred embodiment of the present invention, specifically, a method for performing a binding operation for combining a binding unit configured in disc units (i.e., a binding unit per disc) with a recording-medium file structure
  • a disc package such that it forms/reproduces a virtual package.
  • the optical recording/reproducing device recognizes disc ID (disc_ID) information.
  • the BD-ROM disc equal to the recognized disc includes index/object files "index.bdmv” and “MovieObject.bdmv” 71, playlist files composed of "00000.mpls” 75 and "00001.mpls”, clip-info files composed of "01000.clip” and "01001. dpi”, stream files composed of "01000.m2ts” and "01001.m2ts”, and an AUXDATA file.
  • the optical recording/reproducing device After recognizing the aforementioned disc ID information (disc_ID) , the optical recording/reproducing device determines whether the binding unit configured in disc units is contained in the same disc_ID file structure of the local storage at step SlO.
  • the local storage file structure includes a disc directory (disc_ID) equipped with a disc specific area binding unit, and/or a shared directory
  • “MovieObject.bdmv” 72 playlist files composed of "00000.mpls” 76 and “00002.mpls”, a clip-info file "01002.clip”, a stream file (01002.m2ts”, and an AUXDATA file are contained in the disc directory (disc_ID) and/or the shared directory (Shared) .
  • the local storage file structure has the same directory and file structure as those of the disc.
  • a single binding unit is contained in the disc directory (disc_ID) or the shared directory (Shared) .
  • a studio indicative of a content provider (CP) prepares data of database files (including an index table, movies objects, and/or a playlist) suitable for the virtual package formed after the binding operation, and transmits the aforementioned data if the loaded disc is determined to be a disc manufactured by the content provider (CP) .
  • the optical recording/reproducing device reproduces the disc package SIl. If the binding unit configured in disc units of the same disc ID (disc_ID) is contained in the local storage at step SlO, the optical recording/reproducing device determines whether the virtual file system performs a binding operation in
  • the optical recording/reproducing device reproduces a disc package at step S13. If the binding operation is performed at step S12, the optical recording/reproducing device forms a virtual package, and reproduces the virtual package at step S14. If the binding unit configured in disc units is contained in the local storage, a method for forming the virtual package, and the formed virtual package will hereinafter be described.
  • the virtual file system (VFS) performs the binding operation on the basis of the disc package according to the binding information.
  • index/object files (“index.bdmv” and "MovieObject.bdmv”) 71 contained in the disc package are replaced with index/object files 72 of the disc directory (disc_ID) and/or the shared directory (shared) , such that index/object files ("index.bdmv” and "MovieObject.bdmv”) 73 of the virtual package are configured.
  • index/object files (“index.bdmv” and "MovieObject.bdmv") 72 are contained in data downloaded from a content provider (CP) .
  • index/object files suitable for a binding structure formed after the binding operation
  • the index/object files (“index.bdmv” and "MovieObject.bdmv") 72 of the binding unit have the same data as index/object files ("index.bdmv” and "MovieObject.bdmv") 73 of the virtual package.
  • the binding operation combines the playlist file (00000.mpls) 76 contained in the binding unit with the playlist file (00000.mpls) 75 contained in the disc package.
  • the playlist file (00000.mpls) 76 contained in a binding unit having the same file name as the aforementioned binding unit and the playlist file (00000.mpls) 75 contained in the disc package are replaced with a playlist file (00000.mpls) 75 of the binding unit having earlier priority.
  • a playlist file "00002.mpls) contained in the binding unit having a file name different from that of the aforementioned binding unit is appended or added, such that a plurality of playlist files ("00000.mpls" 77, "00001.mpls", and "00002.mpls" of a newly- formed virtual package are configured.
  • FIGS. 9a ⁇ 9c are conceptual diagrams illustrating a method for forming/reproducing a virtual package in accordance with a second preferred embodiment of the present invention, specifically, a method for performing a binding operation for combining a binding unit configured in title units (i.e., a binding unit per title) with a recording-medium file structure (i.e., a disc package) such that it forms/reproduces a virtual package.
  • a binding unit configured in title units i.e., a binding unit per title
  • a recording-medium file structure i.e., a disc package
  • FIGS. 9a ⁇ 9c exemplarily shows a binding unit configured in title units
  • FIGS. 9a ⁇ 9b show examples having different directory structures.
  • recording-medium file structures shown in FIGS. 9a and 9b are equal to that of FIG ' . 8a, so that a detailed description of the recording-medium file structure will herein be omitted.
  • FIG. 9a shows a first preferred embodiment of an example in which a binding unit of the local storage file structure is configured in title units.
  • the disc directory (disc_ID) and the shared directory (Shared) include directories for every title.
  • a binding unit directory of the title #1 (Title #1 binding unit, hereinafter referred to as ⁇ X Title #1 BD") and a binding unit directory of the title #2 (Title #2 binding unit, hereinafter referred to as "Title #2 BD”) are configured separately from each other.
  • a recording-medium file structure indicative of a specific structure composed of recording medium directories and files is different from a local-storage binding unit file structure indicative of directories and files of the local storage binding unit.
  • the priority of files contained in the local-storage binding unit is higher than that of the recording medium. Therefore, if a specific file contained in the local storage binding unit has the same file name as that of the recording medium files in the same manner
  • FIG. 9b shows a second preferred embodiment in which the binding unit of the local storage file structure is configured in title units.
  • the disc directory (disc_ID) and/or the shared directory (shared) have the same directory and file structure as those of the recording medium.
  • a binding unit of the title #1 (Title #1 binding unit, hereinafter referred to as a "Title #1 BD") and a binding unit of the title #2 (Title #2 binding unit, hereinafter referred to as a "Title #2 BD”) are distinguished from each other by additional information of individual titles.
  • the binding unit information of the title #1 indicates a playlist file (00000.mpls) 81, a clip-info file (01002.dpi) 83, and a stream file (01002.m2ts) 84.
  • the binding unit information of the title #2 indicates the playlist file (00002.mpls) 82.
  • the preferred embodiment shown in FIG. 9b is different from the preferred embodiment shown in FlG. 9a in which individual titles have different directories.
  • the priority of files contained in the local-storage binding unit is higher than that of the recording medium in the preferred embodiment shown in FIG. 9b. Therefore, the binding mechanism for performing the binding operation is
  • FIGS. 9a ⁇ 9b is equal to that of FIG. 8a, so that a detailed description thereof will herein be omitted for the convenience of description.
  • FIG. 9c is a flow chart illustrating a method for forming a virtual package by combining a binding unit configured in title units with a recording medium file structure, such that it reproduces data of the recording medium and data of the local storage according to the present invention.
  • the optical recording/reproducing device recognizes disc ID (disc_ID) information. After recognizing the aforementioned disc ID information (disc_ID) , the optical recording/reproducing device determines whether the binding unit configured in title units of the same disc__ID information is contained in
  • the binding unit is contained in the disc directory (disc_ID) and/or the shared directory (Shared) of the local storage.
  • the content provider (CP) transmits files of individual titles to the local storage of the optical recording/reproducing device so as to reproduce data of individual titles.
  • the aforementioned files of individual titles form binding units, respectively.
  • the optical recording/reproducing device reproduces the disc package S21. If the binding unit configured in title units of the same disc ID (disc__ID) is contained in the local storage at step S20, the optical recording/reproducing device determines whether the virtual file system performs a binding operation in consideration of the binding information at step S22. In this case, the binding unit contained in the local storage may be divided into smaller binding units according to individual title units as shown in FIG. 9a, or may represent files of individual files using additional information whereas its directory/file structure is equal to that of the recording medium as shown in FIG. 9b. If the execution of the binding operation is not requested at step S22, the optical recording/reproducing device reproduces data of the recording medium using only the disc package at
  • step S23 the optical recording/reproducing device forms a virtual package, and reproduces data of the recording medium and data of the local storage using the formed virtual package at step S24.
  • the directory priority is applied to a process for forming a virtual package, such that the file replacement is executed.
  • the directory priority is in the order of the disc directory
  • the recording medium file structure has a file name different from that of the local storage file structure, the appending operation between files is performed so that a virtual package is formed.
  • the virtual package may be re-formed when a title is changed to another title.
  • FIGS. 10a ⁇ 10b are conceptual diagrams illustrating a method for forming/reproducing a virtual package in accordance with a third preferred embodiment of the present invention, specifically, a method for performing a binding operation for combining a binding unit configured in content units (i.e., a binding unit per content) with a recording-medium file structure (i.e., a disc package) such that it forms/reproduces a virtual package.
  • a binding unit configured in content units i.e., a binding unit per content
  • a recording-medium file structure i.e., a disc package
  • FIG. 10a shows a preferred embodiment in which the binding unit of a local storage file structure is configured in content units (i.e., Per Content) .
  • content units i.e., Per Content
  • the index file "index.bdmv" and the object file ⁇ MovieObject.bdmv" are contained in each of the disc directory (disc_ID) and the shared directory (Shared) .
  • Playlist files (00000.00.mpls: 91, 00000.01.mpls: 92, and 00002.mpls) are contained in the playlist directory (PLAYLIST) .
  • the playlist file (00000.00.mpls) 91 is indicative of a playlist file of a first content (Content 1)
  • the playlist file (00000.01.mpls) 92 is indicative of a playlist file of a second content (Content 2) .
  • the binding unit of the local storage file structure includes clip-info files (01002.clpi, 01003.clpi) contained in the clip-info directory (CLIPINF), stream files (01002.m2ts, 01003.m2ts) contained in the stream directory (STREAM), and an AUXDATA directory.
  • the local storage file structure is conceptually equal to the recording medium file structure (BD-ROM disc) .
  • some files downloaded in the local storage file structure include partial- or corrected- information for content data.
  • the partial- or corrected- information performs a merging process to form a virtual package. Therefore, the virtual package formed after the binding unit configured in content unit is combined with the recording medium file structure (BD-ROM disc) is as follows.
  • the index file "index,bdmv” and the object file "MovieObject.bdr ⁇ v" are contained in the virtual package
  • playlist files (00000.mpls:93, 00001.mpls, and 00002.mpls) are contained in the playlist directory (PLAYLIST) .
  • the aforementioned playlist file (00000.mpls) 93 is indicative of a playlist file formed when the recording medium playlist file
  • Clip-info files (01000. dpi, 01002.CIpI, and 01003.clpi) are contained in the clip-info directory (CLIPINF)
  • the stream files (01000.m2ts, 01002.m2ts, and 01003.m2ts) are contained in the stream directory (STREAM) , such that the virtual package is formed.
  • FIG. 10b is a flow chart illustrating a method for forming a virtual package by combining a binding unit configured in content units with a recording medium file structure, such that it reproduces data of the recording medium and data of the local storage according to the present invention.
  • the optical recording/reproducing device if the disc is loaded in the optical recording/reproducing device, the optical recording/reproducing device recognizes disc ID (disc__ID) information. After recognizing the aforementioned disc ID information (disc_ID) , the optical recording/reproducing device determines whether the binding unit configured in content units of the same disc_ID information is contained in the local storage at step S30. The binding unit is contained in the disc directory (disc_ID) and/or the shared directory (Shared) of the local storage. If the binding unit configured in content units of the same disc ID (disc_ID) is not contained in the local storage at step S30, the optical recording/reproducing device reproduces the disc package S31.
  • disc__ID disc ID
  • the optical recording/reproducing device determines whether the binding unit configured in content units of the same disc_ID information is contained in the local storage at step S30. The binding unit is contained in the disc directory (disc_ID) and/or the shared directory (Shared) of the local storage. If the binding unit configured in content units of the same disc ID
  • the optical recording/reproducing device determines whether the virtual file system performs a binding operation for combining the binding unit configured in content units with the recording medium file structure in consideration of the binding information at step S32. If the execution of the binding operation is not requested at step S32, the optical recording/reproducing device reproduces data of the disc package at step S33.
  • the optical recording/reproducing device forms a virtual package, and reproduces data of the formed virtual package at step S34.
  • the directory priority is applied to a process for forming a virtual package, such that the file replacement is executed.
  • the directory priority is in the order of the disc directory (disc_ID) -> the shared directory -> the BD-ROM directory. If the recording medium file structure has a file name different from that of the local storage file structure, the appending operation between files is performed so that a virtual package is formed. Preferably, the virtual package may be re-formed when a title is changed to another title.
  • a method and apparatus for reproducing data from a recording medium using a local storage can effectively reproduce original data recorded in a recording medium and additional data recorded in a local storage, resulting in the creation of more convenient functions for a user.

Abstract

La présente invention a trait à un procédé et un appareil pour la reproduction de données à partir d'un support d'enregistrement utilisant une mémoire locale. L'invention a trait à un procédé et un appareil pour le téléchargement de données associées au support d'enregistrement à partir d'une portion extérieure, et la reproduction des données téléchargées. Une unité de liaison combinée avec le support d'enregistrement à partir des données téléchargées de la mémoire locale est formée, et est combinée avec des fichiers du support d'enregistrement à l'aide de l'information de liaison, de sorte qu'un boîtier virtuel est formé. Des données du support d'enregistrement et/ou des données de la mémoire locale sont reproduites par le boîtier virtuel. Si un fichier spécifique contenu dans l'unité de liaison est égal à un fichier spécifique contenu dans le support d'enregistrement lors de la formation du boîtier virtuel, la priorité est donnée au fichier de l'unité de liaison de sorte que le boîtier virtuel est formé. Par conséquent, des données du support d'enregistrement et des données de la mémoire locale peuvent être efficacement reproduites simultanément, pour le plus grand confort d'un l'utilisateur.
EP05819111A 2004-12-03 2005-12-02 Procede et appareil pour la reproduction de donnees a partir d'un support d'enregistrement utilisant une memoire locale Withdrawn EP1817773A4 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US63264504P 2004-12-03 2004-12-03
KR1020050047141A KR20060063597A (ko) 2004-12-03 2005-06-02 로컬 스토리지를 이용한 기록매체 재생방법 및 재생장치
PCT/KR2005/004103 WO2006059888A2 (fr) 2004-12-03 2005-12-02 Procede et appareil pour la reproduction de donnees a partir d'un support d'enregistrement utilisant une memoire locale

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EP1817773A2 true EP1817773A2 (fr) 2007-08-15
EP1817773A4 EP1817773A4 (fr) 2009-12-23

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KR101267956B1 (ko) * 2005-03-18 2013-05-27 소니 가부시끼가이샤 정보 처리 장치 및 정보 처리 방법과 컴퓨터 판독가능한 기록 매체
WO2014156359A1 (fr) 2013-03-28 2014-10-02 三菱電機株式会社 Dispositif de lecture, procédé de commande et programme

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WO2006059888A3 (fr) 2006-11-02
EP1817773A4 (fr) 2009-12-23

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