EP1834327A1 - Dispositif et procede servant a reproduire des donnees depuis un support d'enregistrement au moyen d'une memoire locale - Google Patents

Dispositif et procede servant a reproduire des donnees depuis un support d'enregistrement au moyen d'une memoire locale

Info

Publication number
EP1834327A1
EP1834327A1 EP05826398A EP05826398A EP1834327A1 EP 1834327 A1 EP1834327 A1 EP 1834327A1 EP 05826398 A EP05826398 A EP 05826398A EP 05826398 A EP05826398 A EP 05826398A EP 1834327 A1 EP1834327 A1 EP 1834327A1
Authority
EP
European Patent Office
Prior art keywords
information
package
file
local storage
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Withdrawn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
EP05826398A
Other languages
German (de)
English (en)
Other versions
EP1834327A4 (fr
Inventor
Kang Soo Seo
Jea Yong Yoo
Byung J. 111-204 Chonggu APT. KIM
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LG Electronics Inc
Original Assignee
LG Electronics Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020050109677A external-priority patent/KR20060081333A/ko
Application filed by LG Electronics Inc filed Critical LG Electronics Inc
Publication of EP1834327A1 publication Critical patent/EP1834327A1/fr
Publication of EP1834327A4 publication Critical patent/EP1834327A4/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Withdrawn legal-status Critical Current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
    • 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
    • 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
    • G11B27/102—Programmed access in sequence to addressed parts of tracks of operating record carriers
    • G11B27/105—Programmed access in sequence to addressed parts of tracks of operating record carriers of operating 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
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
    • G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
    • G11B27/32—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on separate auxiliary tracks of the same or an auxiliary record carrier
    • G11B27/327—Table of contents
    • G11B27/329—Table of contents on a disc [VTOC]
    • 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
    • G11B27/34—Indicating arrangements 
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/79—Processing of colour television signals in connection with recording
    • H04N9/87—Regeneration of colour television signals
    • H04N9/8715—Regeneration of colour television signals involving the mixing of the reproduced video signal with a non-recorded signal, e.g. a text signal
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/21—Disc-shaped record carriers characterised in that the disc is of read-only, rewritable, or recordable type
    • G11B2220/213—Read-only discs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/21—Disc-shaped record carriers characterised in that the disc is of read-only, rewritable, or recordable type
    • G11B2220/215—Recordable discs
    • G11B2220/216—Rewritable discs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2508—Magnetic discs
    • G11B2220/2516—Hard disks
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2537—Optical discs
    • G11B2220/2541—Blu-ray discs; Blue laser DVR discs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/40—Combinations of multiple record carriers
    • G11B2220/41—Flat as opposed to hierarchical combination, e.g. library of tapes or discs, CD changer, or groups of record carriers that together store one title
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/60—Solid state media
    • G11B2220/65—Solid state media wherein solid state memory is used for storing indexing information or metadata
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/84—Television signal recording using optical recording
    • H04N5/85—Television signal recording using optical recording on discs or drums
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/79—Processing of colour television signals in connection with recording
    • H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N9/804—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components
    • H04N9/8042—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components involving data reduction
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/79—Processing of colour television signals in connection with recording
    • H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N9/82—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only
    • H04N9/8205—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only involving the multiplexing of an additional signal and the colour video signal

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 recently been developed 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) .
  • 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 . Disclosure of Invention
  • the present invention is directed to a method and apparatus for reproducing data from a recording medium using a local storage that substantially obviate one or more problems due to limitations and disadvantages of the related art .
  • An obj ect of the present invention is to provide a method and apparatus for downloading data from an external part, storing the downloaded data in a plurality of local storages, and effectively reproducing data recorded in the local storages and data recorded in a recording medium such as a BD . Additional advantages , obj ects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention . The obj ectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings .
  • a method for reproducing data recorded on a recording medium using a local storage comprises reading a disc package from the recording medium; reading a local storage package associated with the disc package from a local storage; displaying metadata information of the local storage package; generating a first binding unit from the local storage package according to binding information modified by a user with reference to the displayed metadata information; and generating a first virtual package by binding the first binding unit with the disc package according to the modified binding information .
  • a method for generating a virtual package comprises reading a first package from an optical disc; reading a second package associated with the first package from a local storage; displaying metadata information of the second package stored through a BD-J application; generating a binding unit from the second package, the binding unit including binding unit manifest information which is modified by a user with reference to the displayed metadata information; and generating a virtual package by binding the binding unit with the disc package according to the binding unit manifest information included in the binding unit .
  • an apparatus for reproducing data recorded on a recording medium comprises a pickup unit for reading a disc package from the recording medium; a local storage for storing a local storage package associated with the disc package; and a controller for generating control signals to display metadata information of the local storage package, and to generates a binding unit from the local storage package according to binding information modified by a user with reference to the displayed metadata information, wherein the controller generates a virtual package by binding the binding unit with the disc package according to the modified binding information .
  • 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 generating 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 local storage binding unit for generating a virtual package in accordance with a preferred embodiment of the present invention
  • FIG . 7 is a structural diagram illustrating a local storage binding unit for generating a virtual package in accordance
  • FIG . 8 is an application image illustrating descriptor information for a binding unit according to the present invention.
  • FIG . 9 is a flow chart illustrating a method for reproducing data from a recording medium using a local storage in accordance with a first preferred embodiment of the present invention.
  • FIG . 10 is a conceptual diagram illustrating a method for generating the virtual package using a virtual file system (VFS ) , and modifying the virtual package according to the present invention.
  • VFS virtual file system
  • FIG . 11 is a flow chart illustrating a method for reproducing data from a recording medium using a local storage in accordance with a first preferred embodiment of the present invention.
  • a method and apparatus for reproducing data from a recording medium using a local storage will hereinafter be described with reference to the annexed drawings .
  • 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 .
  • Disc is considered to be the same as the recording medium according to the present invention .
  • 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 .
  • 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)
  • HDD Hard Disc Drive
  • the term “local storage” of the present invention is not limited to the HDD, and is applicable to other examples as necessary.
  • the local storage may be connected/ disconnected to/from the optical recording/reproducing device, and may be implemented with a portable recording medium (e . g . , a portable HDD, and a portable flash memory, etc. )
  • 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 .
  • Local Storage File Structure for use in the present invention is indicative of a file structure of data stored in the local storage .
  • the local storage may directly read some permission data from the recording medium, may generate system data (e . g . , metadata) associated with record/reproduction operations of the recording medium, and may download the system data from an external Content Provider (CP) , such that the system data may be stored in the local storage .
  • system data e . g . , metadata
  • CP Content Provider
  • the metadata is indicative of data recorded in a metadata file, for example, Metadata for Binding Unit .
  • 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.
  • the information set is replaced with, is added (or appended) to, or is merged with data contained in the recording medium by information of the binding unit manifest files , such that it can simultaneously reproduce data of the recording medium and data of the local storage .
  • the binding unit can be deleted or modified even by the metadata file information, and a detailed description thereof will be described later .
  • 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
  • a program for reproducing data of the recording medium or driving the optical recording/reproducing device is referred to as an "Application" in the present invention .
  • the recording medium is determined to be a BD
  • a BDJ application is used as a drive application
  • a Disc Library Application is used for a disc library.
  • the present invention is not limited to the aforementioned specific application names , and is applicable to other examples .
  • 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 .
  • 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 .
  • a function capable of modifying the additional data according to a user command or operation is used, such that the present invention proposes a method for more effectively reproducing data .
  • 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 .
  • 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 .
  • additional data may be indicative of audio data, presentation graphic (PG) data, interactive graphic (IG) data, or text subtitle, etc .
  • 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 disc is a BD-ROM.
  • 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 obj ect .
  • 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 data directory (AUXDATA) , a metadata directory (META) , and a backup directory (BACKUP) .
  • a playlist directory PLAYLIST
  • CLIPINF clip information directory
  • STREAM stream directory
  • AUXDATA auxiliary data directory
  • MEA metadata directory
  • BACKUP backup directory
  • the auxiliary data 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 . 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 "* .in2ts" .
  • 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 ( * .mpls) includes one or more playitems (Playltem) and one or more sub-playitems (SubPlayltem) .
  • Each playitem ( Playltem) and each sub-playitem (SubPlayltem) are adapted to designate a playing interval during which a specific clip is reproduced.
  • the playitem ( Playltem) and the sub-playitem ( SubPlayltem) include information associated with a specific clip to be reproduced, i . e . , information associated with a reproduction start time ( IN-Time) and other information associated with a 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 metadata directory (META) is indicative of a directory including metadata files .
  • the metadata files include metadata information for the binding unit .
  • the metadata information for the binding unit includes descriptor information capable of allowing a user to recognize contents of data stored in the local storage .
  • the descriptor information may include "Descriptors for Disc Information" for modifying individual directories associated with a specific disc (e . g, disc_ID #1) and "Descriptors for Title Information" for modifying individual titles .
  • a single metadata file is used for a Disc Specific Directory and a Shared Directory, respectively.
  • the metadata file associated with the present invention is recorded as a file name such as "bumt_000. xml" .
  • head information "bumt_” contained in the aforementioned file name is used as a File Descriptor Code distinguished from other data .
  • a file beginning with the "bumt_” information is indicative of "Descriptor File for Binding Unit"
  • the "Descriptor File for Binding Unit” of the present invention may be used as a descriptor file, and it should be noted that the "Descriptor File for Binding Unit” is considered to be the same as the descriptor file .
  • Specific information "__OOO_" contained in the aforementioned file name is used as a language code for identifying supported language information .
  • the Descriptor File for Binding Unit" composed of the English language may be denoted by "_eng__”
  • the Descriptor File for Binding Unit” composed of the Korean language may be denoted by "_kor_”
  • the Descriptor File for Binding Unit” composed of the Japanese language may be denoted by "_jpn_”
  • the Descriptor File for Binding Unit” composed of a plurality of languages may be denoted by "_mul_” .
  • the "Descriptor File for Binding Unit” acting as a metadata file for modifying (deleting or modifying) the local storage binding unit may be denoted by "bumt_eng_xml” .
  • the "Descriptor file for Binding Unit” is stored in the same directory as other metadata files .
  • the "Descriptor file for Binding Unit” is located under the metadata directory (META) of a specific directory (disc_ID #1) of a specific disc, or is located under the metadata directory (META) of the shared directory (Shared) .
  • the backup directory (BACKUP) 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 obj ect file "MovieObj ect” duplicate files of all playlist files ( * .mpls ) contained in the playlist directory ( PLAYLIST)
  • duplicate files of all clip-info files * . clpi
  • 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
  • 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 obj ect file (MovieObj ect) 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.
  • 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 .
  • a file system information area serving as system information for managing overall files
  • 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.
  • original data e . g. , a file structure shown in FIG . 2
  • additional data recorded in the local storage
  • 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 , a local storage 15 , 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 local storage stores data therein .
  • the microprocessor 16 controls overall operations of the above-mentioned components .
  • the additional data may include a metadata file including metadata information capable of deleting or modifying the binding unit or the virtual package .
  • the present invention is applicable to an example in which a plurality of local storages 15 are used or another example in which a plurality of binding units are contained in a single local storage 15.
  • a controller 12 downloads additional data from 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 binding unit using Binding Unit Manifest Information recorded in Binding unit manifest files of the local storage .
  • the controller 12 configures a virtual file structure (hereinafter referred to as a virtual package) using the binding unit manifest information recorded in the binding unit manifest files , such that it can reproduce data contained in the recording medium and data contained in the local storage .
  • the controller reproduces the original data and/or the additional data using the virtual package upon receiving a request from a user .
  • the virtual package generated by the controller 12 includes at least one virtual playlist including a playitem capable of reproducing a plurality of clips .
  • the controller 12 controls the modifying of the binding unit using "Descriptor Information for Binding Unit" from among metadata information, such that it generates an modified binding unit .
  • the controller 12 performs a binding unit for binding or combining the modified binding unit with a disc package, such that it generates a method for generating the virtual package .
  • the controller 12 can modify the virtual package using the binding unit manifest information. Therefore, if a user performs the modification operation by referring to an application image using the "Descriptor Information for Binding Unit" from among the metadata information, the controller 12 can modify the binding unit or the virtual package according to a user command.
  • the AV 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 .
  • the AV 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 for disc_ID #n dependent) 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 for disc_ID #n dependent
  • a binding unit of the local storage 15 is generated, and the local storage 15 may include binding unit manifest information for a binding operation associated with a disc package, and may also include "Descriptor Information for Binding Unit” information for allowing a user to view an application image so as to modify the binding unit or the virtual 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
  • 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
  • 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 , generates 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 generated virtual package .
  • binding unit file information equal to the loaded disc ID information from among all file information units stored in the local storage 15
  • 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 , generates 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 generated virtual package .
  • FIG. 5 is a conceptual diagram illustrating a method for generating the above-mentioned virtual package to simultaneously reproduce data of a recording medium and data of a local storage according to the present invention . If a specific disc is loaded in the optical recording/reproducing device 10 on the condition that the information and contents shown in FIG .
  • 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 generated 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 generates 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
  • the optical recording/reproducing device 10 reads file information (Directory-File for disc__ID #1 dependent) associated with the disc (e . g . , disc_ID #1 ) from the file system, generates a binding unit according the read binding unit manifest information, reads the generated binding unit, and performs a binding operation for replacing the read file information with a disc package of the loaded disc (disc__ID #1 ) or appending the read file information to the disc package .
  • file information Directory-File for disc__ID #1 dependent
  • the optical recording/reproducing device 10 reads file information (Directory-File for disc__ID #1 dependent) associated with the disc (e . g . , disc_ID #1 ) from the file system, generates a binding unit according the read binding unit manifest information, reads the generated binding unit, and performs a binding operation for replacing the read file information with a disc package of the loaded disc (disc__ID #1 ) or appending the read file information to the disc package .
  • the present invention is characterized in that the binding unit is modified by a metadata file before the binding operation associated with the binding unit manifest information is performed, or the virtual package is modified after being generated by the binding operation .
  • the binding unit manifest file according to the present invention includes a list ( i . e . , Files and Titles relation List) indicative of a relationship between files and titles ; Name Mapping information for performing mapping of all files contained in the binding unit to form the virtual package; Progressive Playlist information for progressive playlists ; and Credential information.
  • the above-mentioned name mapping information is used when file structure data of the local storage generates the binding unit or when the binding unit is combined with the disc package .
  • the virtual package generated by the above-mentioned binding operation is indicative of a file structure for reproducing/managing an original clip 422 and an additional clip 412.
  • the original clip 422 is composed of original data recorded in the disc .
  • the additional clip 412 is composed of additional data recorded in the local storage .
  • a preferred embodiment for generating the local storage binding unit will hereinafter be described with reference to FIG . 6.
  • the preferred embodiment shown in FIG. 6 is characterized in that the binding unit generates a file structure including a directory in title units , and it should be noted that the present invention is applicable to other examples .
  • the aforementioned binding unit configured in title units may have the same file structure as that of the recording medium. If necessary, the binding unit may have a file structure different from that of the recording medium.
  • FIG . 6 is a structural diagram illustrating a local storage binding unit for generating a virtual package according to the present invention . Specifically, FIG . 6 shows a preferred embodiment in which the ⁇ org__ID #1" and the ⁇ Misc_ID #1" are used.
  • the binding unit manifest file (disc_ID #l . bumf) 61 contained in the local storage file structure includes mapping information for mapping lower files ( 42005.mpls , 42005. dpi, and 42005.m2ts) of a new trailer to an auxiliary data file (Japanese . otf) contained in the Shared directory of the disc.
  • a new- trailer directory is located under the specific disc directory (disc__ID #1) .
  • the aforementioned new-trailer directory includes a playlist file ( 42005.mpls ) , a clip-info file ( 42005. clpi) , and a stream file ( 42005.m2ts ) .
  • An auxiliary data file (Japanese . otf) is located under the Shared directory.
  • FIG . 7 is a structural diagram illustrating a local storage binding unit for generating a virtual package in accordance with another preferred embodiment of the present invention .
  • FIG . 7 shows a preferred embodiment in which the local storage file structure including the "Descriptor File for Binding Unit" is modified and then the binding unit is generated according to the binding unit manifest file .
  • the binding unit manifest file (disc__ID #l .
  • the binding unit manifest file (disc_ID tl . bumf) 71 is modified, such that the binding unit manifest file information is changed to a file including mapping information for mapping files ( 62005.mpls : 714 , 62005. clpi : 715 , and 62005.m2ts : 716) of a specific title (e . g .
  • the new-trailer directory (New-trailer) is located under the Disc Specific Directory (disc_ID #1) .
  • the new-trailer directory (New-trailer) includes a playlist file ( 62005.r ⁇ pls) 724 , a clip-info file ( 62005. clpi) 725 , and a stream file ( 62005.m2ts ) 726 for a specific title (Title #2 ) .
  • An auxiliary data file (Japanese . otf) 728 is located under the shared directory (Shared) .
  • all files of the generated binding unit act as Read-only files , and the aforementioned binding unit combined with the disc package generates a new virtual package to reproduce data of the recording medium and/or data of the local storage, as previously shown in FIG. 6.
  • FIG . 8 is an application image illustrating descriptor information for a binding unit according to the present invention . The modifying of the binding unit will be described with reference to FIG . 8.
  • a directory name indicative of selected directory information 800 is a movie title "Die Hard”
  • a specific title (Title #1 ) indicative of a content list is a specific image "Movie #1”
  • a specific title (Title #2 ) is indicative of another specific image "Movie #2”
  • a download site indicative of a CP' s site includes information of an Internet Web-site "WWW . FOX. com” and download time information "Jan-10-2005" as download information .
  • the download site may further include Directory Property information, Latest Downloaded Time information, or Updated Time information, etc .
  • the present invention is not limited to the aforementioned examples , and is applicable to other examples . If a user views a specific command "Do you want to delete data associated with this disc 1" to modify the binding unit or the virtual package in the application image showing the aforementioned selected directory information 800, the user can delete data of a desired disc by a descriptor application acting as an modifying program.
  • the application image shows the selected title information 810 on a display.
  • a title name is a specific movie "Die Hard”
  • a title type is a movie title
  • downloaded lists are Japanese Audio information and Korean Text Subtitle Information, etc .
  • the selected title information 810 may include a downloaded site, etc . , but it should be noted that the present invention is not limited to the aforementioned examples , and is applicable to other examples .
  • FIG. 9 is a flow chart illustrating a method for reproducing data from a recording medium using a local storage in accordance with a first preferred embodiment of the present invention. Specifically, FIG . 9 shows an example in which the binding unit is modified by the descriptor information for the binding unit .
  • the optical recording/reproducing device recognizes disc ID (disc_ID) information in local storage data at step S901.
  • the optical recording/reproducing device reads file information including local storage file structure information of the same disc ID (disc_ID) as the loaded disc from the local storage at step S902.
  • the file information includes a metadata file for the binding unit .
  • a metadata file is also downloaded from the external CP .
  • the metadata file is modified by the application . For example, if a user command enters the optical recording/reproducing device via a user interface because the user desires to delete or modify specific content data contained in a specific directory, specific content data to be modified by the user is deleted by a BD-J application, and a metadata file is updated by the deleted information .
  • the metadata information is indicative of descriptor information for the binding unit (Descriptors for Binding Unit) , and is required to recognize each binding unit as information when the user desires to modify the binding unit .
  • the user desires to recognize a variety of information, i . e . , CP content information downloaded/stored in the local storage, content information of a disc, and content information of a title, such that descriptor information is required to recognize the aforementioned information .
  • the user can perform the deleting operation from among directory-, disc- , and title- modifying operations using the aforementioned descriptor information .
  • the descriptor information can support a user operation for the aforementioned modifying operation .
  • the modifying application from among a binding unit group composed of a single binding unit or a plurality of binding units uses "Descriptor for Disc Information" to modify individual directories associated with a specific disc in the Disc Library Application .
  • the modifying operation of individual files associated with a specific title may be performed by "Descriptor for Title Information" . If the modifying operation caused by the metadata information is not performed at step S903, a first binding unit indicative of a binding unit based on the Binding Unit Manifest Files is generated at step S904. If the modifying operation caused by the metadata information is performed at step S903, the local storage file structure is modified according to the metadata file, and a second binding unit indicative of the binding unit associated with the modified binding unit manifest files is generated at step S905.
  • step S906 If the binding operation is not performed at step S906, a disc package is reproduced at step S907.
  • the binding operation associated with the name mapping information contained in the binding unit manifest files is performed so that the virtual package is generated.
  • Original data of a disc acting as a recording medium and additional data of a local storage are reproduced according to the virtual package at step S908.
  • the binding priority can be established during the aforementioned binding operation . It is preferable that the controller 12 may establish the binding priority .
  • the binding priority is as follows .
  • the file of the Disc Specific Area Binding Unit has priority over the file of the Shared Area Binding Unit .
  • the file of the Shared Area Binding Unit has priority over the file of the Disc Package .
  • the binding unit is basically similar to the disc package . If necessary, the binding unit configured in title units may have the same file structure as that of the recording medium, or may have a file structure different from that of the recording medium. It should be noted that the binding unit cannot be operated as a reproduction/management file by itself, differently from the disc package .
  • 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 . Therefore, the virtual file system (VFS ) specifically uses name mapping information from among the above-mentioned binding unit manifest files , and performs a binding operation by binding (or combining) the binding unit updated to the local storage file structure with the disc package contained in the loaded disc, such that it generates a new virtual package .
  • VFS virtual file system
  • the generated virtual package may have the same structure as that of the disc package .
  • FIG. 10 is a conceptual diagram illustrating a method for generating the virtual package using a virtual file system (VFS) , and modifying the virtual package according to the present invention .
  • VFS virtual file system
  • the disc package (org_ID #1, disc_ID #1 : 102 ) contained in a specific disc includes an index file (index . bdmv) , an obj ect file (MovieObj ect . bdmv) , a playlist file (00000.mpls) 1021, a clip-info file ( 01000. dpi) 1022, a stream file ( 01000.m2ts) , and an auxiliary data file ( sound . bdmv) 1024 in the BD directory (BDMV) indicative of a lower directory of the root directory.
  • the newly-downloaded-updated binding unit associated with the loaded disc e . g .
  • disc ID #1 or the local storage binding unit 101, which is pre-downloaded and stored in the local storage, includes a disc specific directory (disc_ID #1) and a disc Shared directory (Shared) under the specific CP directory (e . g. , an org__ID #1) .
  • the new-trailer directory indicative of a lower directory of the disc specific directory (disc_ID #1) includes a specific playlist file ( 42005.mpls ) 1011, a clip-info file
  • the disc shared directory (Shared) includes an auxiliary data file ( Japanese . otf) 1015 , such that the binding unit of the local storage is generated.
  • the name mapping information of the binding unit manifest files of the local storage includes specific information indicative of names and locations of the binding unit files in the virtual package .
  • the playlist file (42005.mpls ) 1011 contained in the binding unit is replaced with the playlist file ( 00000. mpls ) 1031 contained in the playlist directory (PLAYLIST) of the virtual package
  • the clip-info file ( 42005. clpi) 1012 is replaced with the clip-info file ( 02000. clpi) 1033 of the clip-info directory (CLIPINF) of the virtual package
  • the stream file ( 42005.m2ts ) 1013 is replaced with the stream file
  • the aforementioned name mapping information includes list information of files associated with file locations .
  • the binding operation is executed according to the aforementioned name mapping information recorded in the Binding Unit Manifest Files contained in the local storage, such that the virtual package is generated. Therefore, the virtual package 103 generated by the name mapping information includes a BD directory acting as a lower directory of a root directory.
  • the BD directory includes an index file (index . bdmv) and an obj ect file (MovieObj ect . bdmv) according to the virtual package .
  • the BD directory includes a playlist directory ( PLAYLIST) , a clip-info directory (CLIPIF) , a stream directory (STREAM) , a metadata directory (META) , and an AUXDATA directory (AUXDATA) .
  • the playlist directory (PLAYLIST) includes a playlist file ( 00000.mpls) 1031 acting as a substitute for the playlist file ( 42005.mpls ) 1011 of the local storage binding unit 101.
  • the clip-info directory (CLIPINF) appends a clip-info file ( 02000. clpi) 1033 acting as a substitute for the clip-info file ( 42005. clpi ) 1012 of the local storage binding unit 101 to the clip-info file (01000.
  • the stream directory (STREAM) appends a stream file ( 02000.m2ts) 1035 acting as a substitute for the stream file ( 42005.m2ts) 1013 of the local storage binding unit 101 to the stream file ( 01000.m2ts ) 1023 of the disc package .
  • the metadata directory (META) includes a "Descriptor File for
  • Binding Unit (bumt_eng . xml) 1036 acting as a metadata file of the local storage binding unit 101.
  • the AUXDATA directory (bumt_eng . xml) 1036 acting as a metadata file of the local storage binding unit 101.
  • AUXDATA appends an auxiliary data file (11111. otf) 1038 acting as a substitute for the auxiliary data file (Japanese . otf) 1015 of the local storage binding unit 101 to the auxiliary data file ( sound. bdmv) 1024 of the disc package .
  • the index file (Index . bdmv) and the object file (MovieObj ect . bdmv) which act as upper files of the virtual package, may be updated in conventional index and object files ( Index. bdmv and MovieObj ect . bdmv) contained in the disc on the basis of the newly-generated virtual playlist file
  • the generated virtual package 103 is referred to as a first virtual package . If a user modifies the first virtual package according to the "Descriptor File for Binding Unit"
  • the new virtual package is referred to as a second virtual package .
  • the index and obj ect files ( index . bdmv and MovieObj ect . bdmv) acting as upper files contained in the second virtual package generated by the aforementioned deletion result are updated on the basis of the newly- generated virtual playlist file
  • FIG. 11 is a flow chart illustrating a method for reproducing data from a recording medium using a local storage in accordance with a first preferred embodiment of the present invention. Specifically, FIG. 11 is a flow chart illustrating a method for reproducing data of a recording medium and data of a local storage in a new virtual package generated by modifying a virtual package including the "Descriptor File for Binding Unit" .
  • the optical recording/reproducing device recognizes disc ID information
  • the optical recording/reproducing device determines whether the binding unit of the same disc ID (disc_ID) exists in the aforementioned local storage at step S1102. In this case, if there are a plurality of local storages , a single binding unit of the same disc ID (disc_ID) may be contained in the local storages, or no binding unit of the same disc ID
  • the binding unit includes the "Descriptor File for Binding Unit” (e . g . , bumt_eng . xml) acting as a metadata file . If it is determined that there is no binding unit of the same disc ID (disc_ID) in the local storage at step S1102 , the optical recording/reproducing device reproduces data of a disc package contained in a disc acting as the recording medium at step S1103.
  • the optical recording/reproducing device determines whether the same file exists in the binding units having the same disc ID (disc_ID) at step S804.
  • step S1102 If it is determined that the binding unit of the same disc ID (disc_ID) exists in the local storage at step S1102, it is determined whether a binding operation for binding (or combining) the binding unit with the disc package is performed at step S1104.
  • the optical recording/reproducing device reproduces data of the disc package contained in a disc acting as the recording medium at step S1105. If the binding operation is performed at step S1104 , the optical recording/reproducing device generates the virtual package according to the name mapping information of the binding unit manifest files .
  • the first virtual package includes the "Descriptor File for Binding Unit" (e . g . , bumt_eng. xml) acting as a metadata file for the binding unit in the metadata directory (META) at step S1106.
  • the binding operation may be performed on the condition that the optical recording/reproducing device is not connected to a network such as the Internet .
  • the binding priority may be established between a plurality of local storages .
  • the controller may establish the binding priority.
  • the file of .the Disc Specific Area Binding Unit has a binding priority higher than that that of the Shared Area Binding Unit .
  • the binding priority between the file of the local storage binding unit and the file of the recording medium binding unit may be determined in the order of the local storage binding unit
  • the local storage binding unit file has a binding priority higher than that of the disc package file . It is determined whether the first virtual package generated at the above step S1106 is modified by a user command using the "Descriptor File for Binding Unit" (e . g . , bumt_eng . xml) at step S1107. If it is determined that the virtual package is not modified at step S1107 , the optical recording/reproducing device reproduces recording medium data and local storage data according to the first virtual package generated at the above step S1106 at step S1108.
  • the optical recording/reproducing device reproduces recording medium data and local storage data according to the first virtual package generated at the above step S1106 at step S1108.
  • the optical recording/reproducing device If it is determined that the virtual package is modified at step S1107 , the optical recording/reproducing device generates the second virtual package by executing the user command . If there is a reproduction command, the optical recording/reproducing device reproduces recording medium data and local storage data according to the second virtual package at step S1109.
  • 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 downloaded/recorded in a plurality of local storages .
  • the user can modify the additional data if required according to the present invention, such that the user can more conveniently use a variety of functions according to the present invention.

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Abstract

Dispositif servant à reproduire des données enregistrées sur un support d'enregistrement et comprenant une unité de saisie, une mémoire locale et un contrôleur. L'unité de saisie lit le contenu d'un disque à partir du support d'enregistrement et la mémoire locale enregistre un contenu associé au contenu du disque. Le contrôleur génère des signaux de contrôle servant à afficher une information sous forme de métadonnées du contenu de la mémoire locale, ainsi qu'à produire une unité de liaison à partir de ce contenu. Le processus de liaison est exécuté en fonction de l'information de liaison modifiée par l'utilisateur selon l'information affichée de métadonnées. Le contrôleur génère enfin un contenu virtuel par liaison de l'unité de liaison au contenu du disque en fonction de l'information de liaison modifiée.
EP05826398A 2005-01-07 2005-12-29 Dispositif et procede servant a reproduire des donnees depuis un support d'enregistrement au moyen d'une memoire locale Withdrawn EP1834327A4 (fr)

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US64178005P 2005-01-07 2005-01-07
KR1020050109677A KR20060081333A (ko) 2005-01-07 2005-11-16 로컬 스토리지를 이용한 기록매체 재생방법 및 재생장치
PCT/KR2005/004648 WO2006073247A1 (fr) 2005-01-07 2005-12-29 Dispositif et procede servant a reproduire des donnees depuis un support d'enregistrement au moyen d'une memoire locale

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EP1834327A4 (fr) 2010-06-30

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