US20060123034A1 - Method and apparatus for managing data files stored in local storage - Google Patents

Method and apparatus for managing data files stored in local storage Download PDF

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Publication number
US20060123034A1
US20060123034A1 US11/292,110 US29211005A US2006123034A1 US 20060123034 A1 US20060123034 A1 US 20060123034A1 US 29211005 A US29211005 A US 29211005A US 2006123034 A1 US2006123034 A1 US 2006123034A1
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United States
Prior art keywords
file
local storage
data
files
binding unit
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Abandoned
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US11/292,110
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English (en)
Inventor
Kang Seo
Jea Yoo
Byung Kim
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LG Electronics Inc
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Individual
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Priority to US11/292,110 priority Critical patent/US20060123034A1/en
Assigned to LG ELECTRONICS INC. reassignment LG ELECTRONICS INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KIM, BYUNG JIN, SEO, KANG SOO, YOO, JEA YONG
Publication of US20060123034A1 publication Critical patent/US20060123034A1/en
Abandoned legal-status Critical Current

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    • 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
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/00094—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to authorised record carriers
    • 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
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/02—Control of operating function, e.g. switching from recording to 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
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • 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
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/00094—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to authorised record carriers
    • G11B20/00115—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to authorised record carriers wherein the record carrier stores a unique medium identifier
    • 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
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/00731—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction
    • 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
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/00855—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a step of exchanging information with a remote server
    • 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
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/10527—Audio or video recording; Data buffering arrangements
    • G11B2020/10537—Audio or video recording
    • 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 managing data files stored in 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 managing data files stored in 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 effectively managing data files stored in a local storage.
  • Another object of the present invention is to provide a method and apparatus for deleting data files stored in a local storage in disc units, content units, or content units.
  • a method for managing data files of a local storage comprises the steps of: a) downloading at least one data file from a content provider, storing the downloaded data file in the local storage, and forming a binding unit using the stored file; and b) upon receiving a command for deleting a specific file contained in the binding unit, deleting all files contained in the binding unit.
  • a method for managing data files of a local storage comprising the steps of: a) downloading at least one data file from a content provider, storing the downloaded data file in the local storage, and forming a binding unit using the stored file; and b) upon receiving a command for deleting a specific file contained in the binding unit, simultaneously deleting all files associated with a title including the specific file to be deleted.
  • a method for managing data files of a local storage comprising the steps of: a) downloading at least one data file from a content provider, storing the downloaded data file in the local storage, and forming a binding unit using the stored file; and b) upon receiving a command for deleting a specific file contained in the binding unit, deleting only the specific file to be deleted, and correcting a database file associated with the deletion of the file.
  • an apparatus for managing data files of a local storage comprising: a pickup unit for reading data from a recording medium; a local storage for downloading at least one file associated with the recording medium data, and storing the downloaded file; and a controller for forming a binding unit using the file stored in the local storage, and deleting a specific file or specific files from the binding unit in disc units, title units, or content units.
  • 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
  • FIGS. 5 A ⁇ 5 B are conceptual diagrams illustrating a method for deleting local storage data in accordance with a first preferred embodiment of the present invention, in which a binding unit of the local storage is configured in disc units (i.e., per disc);
  • FIGS. 6 A ⁇ 6 B are conceptual diagrams illustrating a method for deleting local storage data in accordance with a second preferred embodiment of the present invention, in which a binding unit of the local storage is configured in title units (i.e., per title); and
  • FIGS. 7 A ⁇ 7 B are conceptual diagrams illustrating a method for deleting local storage data in accordance with a third preferred embodiment of the present invention, in which a binding unit of the local storage is configured in content units (i.e., per content).
  • 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 applied to other recording mediums without departing from the scope and spirit of the invention.
  • 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.
  • HDD Hard Disc Drive
  • 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.
  • a directory area capable of storing the downloaded data of the local storage is referred to as a local storage file structure.
  • 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.
  • data recorded in the recording medium is referred to as “original data”
  • additional data data associated with the recording medium from among a plurality of data units stored in 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. It should be noted that 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. 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.
  • a person for providing content data used as an external source is generally referred to as a content provider (CP).
  • CP content provider
  • AV Audio/Video
  • 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.
  • 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 original data For the convenience of description, although a signal recorded in the disc is called the original data, and other signals existing in the outside of the disc are called the additional data, it should be noted that the original data and the additional data are not limited to only specific 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.
  • the present invention When original data is recorded in the optical disc 30 seated in the optical recording/reproducing device 10 , and additional data associated with the original data is present in other storage places (e.g., Internet), the present invention deletes unnecessary files, forms a binding unit to be combined with original data, such that it reproduces the original data and the additional data at the same time.
  • the present invention provides a method for deleting additional data files stored in the local storage.
  • 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).
  • 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 includes a plurality of AV stream files recorded in a disc according to a specific format.
  • 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”.
  • 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 clip-info files (*.Clpi) connected to the stream files (*.m2ts) on a one-to-one basis are generically named a “Clip”. In other words, this means that a single clip is indicative of data composed of a stream file (*.m2ts) and a clip-info file (*.clpi).
  • 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 (PlayItem) and one or more sub-playitems (SubPlayItem).
  • Each playitem (PlayItem) and each sub-playitem (SubPlayItem) are adapted to designate a playing interval during which a specific clip is reproduced.
  • the playitem (PlayItem) and the sub-playitem (SubPlayItem) 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 (PlayItem) in the playlist file is referred to as a main path, and a process for reproducing data using individual sub-play items (SubPlayItem) 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 (SubPlayItem) 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 (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 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
  • FIG. 2 a method for reproducing a specific title using the above-mentioned disc file structure is shown in FIG. 2 .
  • the index file (index.bdmv) 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 information “Title #1 ⁇ Title #n”.
  • title menu information associated with the index table is provided to the user via the display 20 .
  • data reproduction begins according to a scenario pre-defined by a disc manufacturer.
  • a specific playlist file is executed according to a command contained in the object file (MovieObject) of the reproduction/management file structure.
  • one or more clips e.g., Clip #1 ⁇ Clip #3
  • 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.
  • 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 downloading external additional data in a local storage, and deleting specific data from the downloaded data upon receiving a request command from a user, before reproducing original data (e.g., a file structure shown in FIG. 2 ) recorded in the disc and additional data recorded in the local storage, such that a variety of preferred embodiments according to the present invention will hereinafter be described.
  • original data e.g., a file structure shown in FIG. 2
  • 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
  • the virtual file system is indicative of a virtual file system which unifies a file system contained in the local storage 15 and a file system of the loaded disc such that it manages the unified system.
  • a new virtual package is formed.
  • the virtual package formed by the binding operation acts as a reproduction management file structure for reproducing/managing an original clip composed of the original data of the disc and an additional clip composed of the additional data of the local storage.
  • the original clip and the additional clip are stored in different areas.
  • a local storage file structure In association with the local storage 15 , a local storage file structure includes a binding unit whose additional data associated with original data is configured in disc units, title units, or content units. Therefore, the additional data is stored in the local storage file structure.
  • the controller 12 forms a local storage file structure in the local storage 15 , and controls external data in the local storage file structure. In addition, the controller 12 controls a function for storing the downloaded data in the local storage file structure, and a function for deleting user-selected files contained in the downloaded data from the local storage file structure.
  • 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 .
  • 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 the 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 binding unit manifest files including binding unit manifest information for a binding operation associated with a disc file structure (i.e., a disc package) may be formed.
  • the local storage 15 may include a plurality of file information units (Directory-File for disc_IDs #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 the original data of the disc and the additional data of the local storage using the formed virtual package.
  • the controller 12 reads the binding unit file information, and forms a virtual package by binding (or combining) the read information and the disc package.
  • the present invention provides a method and apparatus for deleting data files from the local storage file structure upon receiving a deletion command from a user.
  • a local storage binding unit configured in disc units i.e., per disc
  • a local storage binding unit configured in title units i.e., per title
  • a local storage binding unit configured in content units i.e., per content
  • FIGS. 5 A ⁇ 5 B are conceptual diagrams illustrating a method for deleting local storage data in accordance with a first preferred embodiment of the present invention, in which a binding unit of the local storage is configured in disc units (i.e., per disc).
  • the local storage file structure includes a binding unit data (BindingUnitData) directory including a plurality of binding units in a root directory.
  • the local storage file structure may include an organization directory (e.g., org_ID #1) indicative of a content provider (CP) equal to a disc author in the binding unit data (BindingUnitData) directory.
  • the organization directory (org_ID #1) includes a plurality of specific disc directories (disc_ID) and a shared directory (Shared) in the org_ID directory of the content provider.
  • a method for deleting local storage data according to the present invention will hereinafter be described with reference to FIG. 5B .
  • the optical recording/reproducing device downloads additional data from an external content provider (CP), forms a local storage file structure in disc units, and stores the local storage file structure in a local storage at step S 10 .
  • CP external content provider
  • the controller of the optical recording/reproducing device forms a binding unit acting as a local storage file structure in disc units using a BDJ application serving as a download application, and downloads the additional data.
  • the local storage file structure including the downloaded data includes a disc specific directory (disc_ID #1) and another specific directory (disc_ID #1) in a directory (e.g., org_ID #1) for each content provider (CP).
  • a BD directory (BDMV) indicative of a binding unit 60 is contained in the disc specific directory (disc_ID #1).
  • the binding unit 60 indicated by the BDMV directory is configured in disc units.
  • the binding unit 60 includes an index file (index.bdmv) 61 acting as a general file (i.e., an upper file) capable of guaranteeing user interactivity, an object file (MovieObject.bdmv) 62 , a playlist directory (PLAYLIST) composed of playlist files (00000.mpls:63 and 00002.mpls:64), a clip-info directory (CLIPINF) composed of a clip-info file (01002.clpi) 65 , and a stream directory (STREAM) composed of a stream file (01002.m2ts) 66 in the BDMV directory.
  • index file index.bdmv
  • An object file i.e., an upper file
  • PLAYLIST playlist directory
  • CLIPINF clip-info directory
  • STREAM stream directory
  • the optical recording/reproducing device determines the presence of a command for deleting specific disc (disc #1) files downloaded/stored in the local storage at step S 11 .
  • the optical recording/reproducing device does not delete all files of the specific disc at step S 12 .
  • the optical recording/reproducing device deletes all files of a specific disc from the local storage file structure at step S 13 , such that it can delete the binding unit 60 .
  • the deletion of the specific disc files at the above step S 13 may be executed by a resident application of the controller contained in the optical recording/reproducing device, such that it means that all downloaded content data of the binding unit for the disc is deleted.
  • the local storage file structure deleted by the above step S 13 includes only the disc specific directory (disc_ID #2) in a directory (e.g., org_ID #1 directory) for each content provider (CP).
  • FIGS. 6A-6B are conceptual diagrams illustrating a method for deleting local storage data in accordance with a second preferred embodiment of the present invention, in which a binding unit of the local storage is configured in title units (i.e., per title).
  • the basic directory structure of the local storage in FIG. 6A is equal to that of FIG. 5A .
  • files contained in individual directories of the binding unit 70 of the local storage file structure are changed according to individual titles, and a detailed description thereof will hereinafter be described with reference to FIGS. 6 A ⁇ 6 B.
  • the optical recording/reproducing device downloads additional data from an external content provider (CP), forms a local storage file structure in title units, and stores the local storage file structure in a local storage at step S 20 .
  • CP external content provider
  • the controller of the optical recording/reproducing device forms a binding unit acting as a local storage file structure in title units using a BDJ application serving as a download application, and downloads the additional data.
  • the local storage downloads not only data but also the file information of the titles.
  • the local storage downloads not only first information indicating that specific files (00000.mpls:74, 01002.clpi:76, and 01002.m2ts:77) are equal to files associated with the title #1 binding unit, but also second information indicating that a specific file (00002.mpls) 75 is equal to a file associated with the title #2 binding unit while it downloads data from the external content provider (CP).
  • specific information which indicates whether files of the binding unit 70 contained in the aforementioned local storage file structure are equal to files of a specific title, may be included in information of the binding unit manifest files downloaded from the content provider (CP).
  • the local storage file structure including the downloaded data includes a disc specific directory (disc_ID #1) and another specific directory (disc_ID #1) in a directory (e.g., org_ID #1) for each content provider (CP).
  • a BD directory (BDMV) indicative of a binding unit 70 is contained in the disc specific directory (disc_ID #1).
  • the binding unit 70 indicated by the BDMV directory is configured in title units.
  • the binding unit 70 includes an index file (index.bdmv) 71 acting as a general file (i.e., an upper file) capable of guaranteeing user interactivity, a title #1's object file (MovieObject.bdmv) 72 , a title #2's object file (MovieObject.bdmv) 73 , a playlist directory (PLAYLIST) composed of playlist files (00000.mpls:74 and 00002.mpls:75), a clip-info directory (CLIPINF) composed of a clip-info file (01002.clpi) 76 , and a stream directory (STREAM) composed of a stream file (01002.m2ts) 77 in the BDMV directory.
  • index file index.bdmv
  • a general file i.e., an upper file
  • the object file (MovieObject.bdmv) 72 , the playlist file (00000.mpls) 74 , the clip-info file (01002.clpi) 76 , and the stream file (01002.m2ts) 77 from among the aforementioned files of the binding unit 70 are available for the title #1.
  • the object file (MovieObject.bdmv) 73 and the playlist file (00002.mpls) 75 are available for the title #2.
  • the optical recording/reproducing device determines the presence of a command for deleting specific title (Title #1) files downloaded/stored in the local storage at step S 21 .
  • the optical recording/reproducing device does not delete the files of the specific title (Title #1) at step S 22 .
  • the optical recording/reproducing device deletes the files of a specific title (Title #1) from the local storage file structure at step S 23 .
  • a plurality of files of the specific title (i.e., the object file (MovieObject.bdmv) 72 , the playlist file (00000.mpls) 74 , the clip-info file (01002.clpi) 76 , and the stream file (01002.m2ts) 77 ) are deleted from the binding unit 70 at step S 23 .
  • the deletion of the specific title files at the above step S 23 may be executed by a resident application of the controller contained in the optical recording/reproducing device, such that it means that all downloaded content data of the binding unit for the title #1 is deleted.
  • the optical recording/reproducing device modifies a database structure of a specific file from among the files of the local storage at step S 24 .
  • an index table of an index file (Index.bdmv) 71 - 1 may be modified according to a title formed after the database structure is deleted, or a database structure of the object file (MovieObject.bdmv) 73 may be modified.
  • the binding unit 70 - 1 includes an index file (Index.bdmv) 71 - 1 having a modified database file structure, an object file (Movieobject2.bdmv) 73 , a playlist directory (PLAYLIST) equipped with a playlist file (00002.mpls) 75 for the title #2, a clip-info directory (CLIPINF) having no files, and a stream directory (STREAM) having no files in the BDMV directory.
  • FIGS. 7 A ⁇ 7 B are conceptual diagrams illustrating a method for deleting local storage data in accordance with a third preferred embodiment of the present invention, in which a binding unit of the local storage is configured in content units (i.e., per content).
  • the optical recording/reproducing device downloads additional data from an external content provider (CP), forms a local storage file structure in content units, and stores the local storage file structure in a local storage at step S 30 .
  • CP external content provider
  • the controller of the optical recording/reproducing device forms a binding unit acting as a local storage file structure in content units using a BDJ application serving as a download application, and downloads the additional data.
  • the local storage file structure including the downloaded data includes a disc specific directory (disc_ID #1) and another specific directory (disc_ID #1) in a directory (e.g., org_ID #1) for each content provider (CP).
  • the BDMV directory indicative of a binding unit 80 is contained in the disc specific directory (disc_ID #1).
  • the binding unit 80 indicated by the BDMV directory is configured in content units.
  • the binding unit 80 includes an index file (index.bdmv) 81 acting as a general file (i.e., an upper file) capable of guaranteeing user interactivity, an object file (MovieObject.bdmv) 82 , a playlist directory (PLAYLIST) composed of playlist files (00000.00.mpls:83, 00000.01.mpls:84, and 00002.mpls:85), a clip-info directory (CLIPINF) composed of clip-info files (01002.clpi:86 and 01003.clpi:87), and a stream directory (STREAM) composed of a stream file (01002.m2ts:88 and 01003.m2ts:89) in the BDMV directory.
  • index file index.bdmv
  • the playlist file (00000.00.mpls) 83 , the clip-info file (01002.clpi) 86 , and the stream file (01002.m2ts) 88 from among the aforementioned files of the binding unit 80 are available for the content #1.
  • the playlist file (00000.01.mpls) 84 , the clip-info file (01003.clpi) 87 , and the stream file (01003.m2ts) 89 are available for the title #2.
  • the optical recording/reproducing device determines the presence of a command for deleting specific content (Content #1) files downloaded/stored in the local storage at step S 31 .
  • the optical recording/reproducing device does not delete the files of the specific content (Content #1) at step S 32 .
  • the optical recording/reproducing device deletes the files of a specific content (Content #1) from the local storage file structure at step S 33 .
  • a plurality of files of the specific content (Content #1) i.e., the playlist file (00000.00.mpls) 83 , the clip-info file (01002.clpi) 86 , and the stream file (01002.m2ts) 88 ) are deleted from the binding unit 80 at step S 33 .
  • the deletion of the specific content files at the above step S 33 may be executed by a resident application of the controller contained in the optical recording/reproducing device, such that it means that all downloaded content data of the binding unit for the content is deleted.
  • the optical recording/reproducing device modifies a database structure of a specific file from among the files of the local storage at step S 34 .
  • a database structure of a specific file For example, an index table of a partial index file (Index.bdmv) 81 - 1 and a database structure of the object file (MovieObject.bdmv) 8201 may be mofidied according to a content formed after the database structure is deleted.
  • the binding unit 80 - 1 includes an index file (Index.bdmv) 81 - 1 having a modified database file structure for the content #2, an object file (MovieObject.bdmv) 82 - 1 , a playlist directory (PLAYLIST) equipped with playlist files (00000.01.mpls:84 and 00002.mpls:85) for the content #2, a clip-info directory (CLIPINF) composed of a clip-info file (01003.clpi) 87 , and a stream directory (STREAM) composed of a stream file (01003.m2ts) 89 in the BDMV directory.
  • an index file Index.bdmv
  • an object file MovieObject.bdmv
  • PLAYLIST playlist directory
  • CLIPINF clip-info directory
  • STREAM stream directory
  • the aforementioned method for deleting data of the binding unit in content units can delete only the damaged or corrupted content data.
  • data of the binding unit is deleted in disc units, all disc files may be deleted.
  • data of the binding unit is deleted in title units, all title files may be deleted.
  • a method and apparatus for deleting local storage data can delete data from the binding unit of the local storage file structure in disc units, title units, or content units, such that it can maximally use the local storage having limited capacity. Also, the present invention can effectively reproduce original data recorded in a recording medium and additional data downloaded from an external part, resulting in the creation of more convenient functions for a user.

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  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Management Or Editing Of Information On Record Carriers (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
  • Television Signal Processing For Recording (AREA)
  • Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
US11/292,110 2004-12-03 2005-12-02 Method and apparatus for managing data files stored in local storage Abandoned US20060123034A1 (en)

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KR1020050049468A KR20060063602A (ko) 2004-12-03 2005-06-09 로컬 스토리지 데이터를 삭제하는 방법 및 장치
US11/292,110 US20060123034A1 (en) 2004-12-03 2005-12-02 Method and apparatus for managing data files stored in local storage

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