Classifications

• • G—PHYSICS
  • G11—INFORMATION STORAGE
  • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
  • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
  • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
  • G11B27/102—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
  • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
  • G11B20/10—Digital recording or reproducing
• • G—PHYSICS
  • G11—INFORMATION STORAGE
  • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
  • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
  • G11B20/10—Digital recording or reproducing
  • G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
• • G—PHYSICS
  • G11—INFORMATION STORAGE
  • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
  • 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
• • 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
  • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
  • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
  • G11B7/005—Reproducing
• • 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
• • G—PHYSICS
  • G11—INFORMATION STORAGE
  • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
  • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
  • G11B20/10—Digital recording or reproducing
  • G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
  • G11B2020/1264—Formatting, e.g. arrangement of data block or words on the record carriers wherein the formatting concerns a specific kind of data
  • G11B2020/1288—Formatting by padding empty spaces with dummy data, e.g. writing zeroes or random data when de-icing optical 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
• • 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
  • G11B2220/2537—Optical discs
  • G11B2220/2541—Blu-ray discs; Blue laser DVR discs
• • 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
  • H04N9/806—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 with processing of the sound signal
  • H04N9/8063—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 with processing of the sound signal using time division multiplex of the PCM audio and PCM video signals
• • 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 recording medium, and more particularly, to a method and apparatus of reproducing data recorded on a recording medium and a local storage.
• Optical discs are widely used as a recording medium for recording mass data.
• a new high density optical recording medium such as a blu-ray disc (hereinafter referred to as "BD")
• BD blu-ray disc
• the optical recording and/or reproducing apparatus must be provided with functions of either receiving external input signals and displaying the received signals, or applying external input signals with a built-in blu-ray disc (BD) playback signal for reproduction
• the present invention is directed to a method and apparatus of reproducing data recorded on a recording medium and 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 of configuring a reproduction management file for reproducing both data recorded within the high density recording medium and data stored in a local storage.
• a method of reproducing data recorded on a recording medium includes reproducing main data recorded on the recording medium and sub ⁇ data stored in a local storage using a PlayList file which includes a main path and a sub path, wherein the main path contains a Playltem for play-back of the main data, and the sub path contains at least one SubPlayltem associated with the Playltem for play-back of the sub data in association with
• a recording medium includes reproducing main data recorded on the recording medium and associated sub data stored in a local storage using a PlayList file which includes a main path and a sub path, wherein the main path contains a plurality of Playltems for play-back of the main data, and the sub path contains at
• a method of reproducing data recorded on a recording medium includes reproducing main data recorded on the recording medium and sub data stored in a local storage using a PlayList file which includes a main path and a plurality of sub paths, wherein the main path contains a Playltem for play-back of the main data, and each sub path contains at least one SubPlayltem associated with the Playltem for play-back of the sub data in association with the play-back of the main data.
• an apparatus of reproducing data recorded on a recording medium includes a pick-up unit for reading main data recorded on the recording medium, a local storage for storing sub data associated with the main data, and a decoder for decoding the main data and the sub data using a PlayList file which includes a main path and a sub path, wherein the main path contains a Playltem for play-back of the main data, and the sub path contains at least one SubPlayltem associated with the Playltem for play ⁇ back of the sub data in association with the play-back of the main data.
• an apparatus of reproducing data recorded on a recording medium includes a pick-up unit for reading main data recorded on the recording medium, a local storage for storing sub data associated with the main data, and a decoder for decoding the main data and the sub data using a PlayList file which includes a main path and a sub path, wherein the main path contains a plurality of Playltems for play-back of the main data, and the sub path contains at least one SubPlayltem associated with the Playltems for play-back of the sub data in association with the play-back of the main data.
• an apparatus of reproducing data recorded on a recording medium includes a pick-up unit for reading main data recorded on the recording medium, a local storage for storing sub data associated with the main data, and a decoder for decoding the main data and the sub data using a PlayList file which includes a main path and a plurality of sub paths, wherein the main path contains a Playltem for play-back of the main data, and each sub path contains at least one SubPlayltem associated with the Playltem for play-back of the sub data in association with the play-back of the main data.
• FIG. 1 illustrates a general view of the present invention
• FIGs. 2A and 2B illustrate a file structure that is recorded in the present invention and a structure of a PlayList file, which is a reproduction management file, for reproducing the recorded file structure;
• FIG. 3 illustrates a recording structure of data recorded on the recording medium according to the present invention
• FIG. 4 illustrates an optical recording and/or reproducing apparatus according to the present invention
• FIGs. 5A and 5B illustrate a method and apparatus for reproducing data recorded within the recording medium and data stored in a local storage according to the present invention
• FIGs. 6A to 6E illustrate examples of configuring a SubPlayltem, among the methods of configuring the reproduction management files according to the present invention
• FIGs. 7A to 7D illustrate examples of configuring a SubPath, among the methods of configuring the reproduction management files according to the present invention
• FIGs. 8A to 8C illustrate other examples of configuring a SubPlayltem, among the methods of configuring the reproduction management files according to the present invention
• FIGs. 9A to 9D illustrate other examples of configuring a SubPath, among the methods of configuring the reproduction management files according to the present invention.
• FIGs. 1OA to 1OF illustrate syntaxes of the reproduction management file according to the present invention.
• a "reproduction management file” refers to a management file for reproducing both data recorded on the recording medium and data stored in a local storage. More specifically, in the blu-ray disc (BD) the reproduction management file is referred to as a "PlayList" . A detailed description of the reproduction management file will be made with reference to FIG. 2A and FIG. 2B along with the description of the overall file structure.
• FIG. 1 illustrates a general view of the present invention. More specifically, FIG. 1 illustrates an example of a
• the "optical recording and/or reproducing apparatus 10" can record and/or reproduce data on/from optical discs of various standards. Depending upon its design, the apparatus can record/reproduce data on/from an optical disc of a specific standard (e.g., blu-ray disc (BD)) only, or the apparatus can only reproduce data from the optical disc.
• a specific standard e.g., blu-ray disc (BD)
• BD blu-ray disc
• BD Blu-ray disc
• BD-Player Blu-ray disc Player
• BD-Recorder Blu-ray disc Recorder
• the optical recording and/or reproducing apparatus 10 Apart from the function of recording and/or reproducing the optical disc, the optical recording and/or reproducing apparatus 10 according to the present invention also has the function of receiving an external input signal and processing the received signal and providing the signal to a viewer by- transmitting the processed signal onto a screen through a display 20.
• the external signal there is no limitation for the external signal that can be inputted.
• the most common external input signal is a digital broadcast program (DTV) or the Internet. Most particularly, since the Internet
• the present invention seeks to efficiently reproduce data by combining main data and sub data, when the main data is recorded in the optical disc (i.e., BD) , which is loaded in the optical recording and/or reproducing apparatus 10, and when the sub data that is associated with the main data exists in an external source, such as the Internet.
• the "main data” refers to the signal recorded within the optical disc
• the "sub data” refers to the signal existing in an external source outside of the optical disc.
• the terminologies are only based on the method of acquiring the data, and the main data and the sub data do not limit the data to only specific types of data.
• the main data generally includes audio data, presentation graphic (PG) data, text subtitle, interactive graphic (IG) data, and so on.
• PG presentation graphic
• IG interactive graphic
• other types of data existing in an external source, which are associated with the main data may be used as the sub data.
• the present invention seeks to provide a method for resolving such requirements.
• FIGs. 2A and 2B and FIG. 3 illustrate a file structure and a data recording structure that can be applied to the recording medium according to the present invention.
• FIG. 2A which illustrates a file structure for controlling information recorded within the disc
• BDMV BD directory
• Each BD directory includes an "index.bdmv” and a "MovieObject .bdmv” , which represent general files that are used when interacting with one or more users .
• Each BD directory includes three file directories including data to be reproduced, and information required for reproducing the data.
• the file directories included in each BD directory are a stream directory (STREAM) , a playlist directory (PLAYLIST) , and a clip information directory (CLIPINF) .
• the stream directory includes audio/video (AV) stream (hereinafter referred to as "AV stream”) files. More specifically, the AV streams (01000.m2ts, 02000.m2ts) may generally be in the form of MPEG2 transport packets and be named as "*.m2ts". In the BD standard, the AV stream is referred to as a clip file, and in the description of the present invention, the "main data" and the "sub data” will be formed as AV stream files. Further, the clip information directory (CLIPINF) includes clip information files
• a clip information file (*.clpi) includes property information and timing information of a corresponding AV stream. More specifically, the timing information includes mapping information that maps presentation time stamp (PTS) with source packet number (SPN) using entry point map.
• PTS presentation time stamp
• SPN source packet number
• 01000.clpi included in CLIPINF includes the property and timing information of 01000.m2ts included in STREAM, and 01000.clpi and 01000.m2ts form a clip (Clip) .
• a "Main clip” refers to a clip associated with the main data
• the "Sub clip” refers to a clip associated with the sub data.
• PlayList files includes one or more PlayList files (*.mpls) , wherein each PlayList file (*.mpls) includes at least one Playltem which designates playing interval for a specific clip. More specifically, a Playltem includes information designating presentation start and end times (In-Time and Out-Time) of a specific clip, which may be designated by clip_Information_File_name within the Playltem. Accordingly, a PlayList file (*.mpls) represents a reproduction management control file for reproducing (or playing-back) a desired clip from a combination of one or more Playltems. Accordingly, FIG. 2B illustrates a relation (or association) between the PlayList file and the main clip.
• the PlayList file includes a main path having at least one Playltem, and each of the Playltems includes a reproduction (or playback) management information for reproducing (or playing-back) a specific main clip (Clip #1, Clip #2, Clip #3) .
• AV stream #1 within main clip #1 is reproduced by Playltem #1.
• AV stream #2 within main clip #2 is then reproduced by Playltem #2, and AV stream #3 within main clip #3 is reproduced by Playltem #3.
• FIG. 3 illustrates a general structure of information (or data) associated with the file structure that are recorded on the optical disc according to the present invention. More specifically, starting from the inner circumference (or center) of the disc, the disc volume includes a file system information area occupying the inmost portion of the disc volume, an AV stream area occupying the outmost portion of the disc volume, and a database area occupied between the file system information area and the stream data area. In the file system information area, system information for controlling the entire data files is recorded. And, main data such as audio/video/graphic data are recorded in the AV stream area. The general files, PlayList files, and clip information files are recorded in the database area of the disc volume.
• the data recorded in the AV stream area within the disc is referred to as the main data. Therefore, by using the information within the database area, a user is able to select an AV stream, which the user desires to reproduce, and decide and use the appropriate reproducing method of the selected AV stream.
• the present invention relates to a method for reproducing (or playing-back) the main data recorded in the optical disc and the sub data existing within an external source in combination.
• various examples of the present invention will be described with reference to the
• FIG. 4 illustrates an optical recording and/or reproducing apparatus 10 according to the present invention.
• the optical recording and/or reproducing apparatus 10 basically includes a pick-up unit 11 for reproducing the control information including the main data and the file information recorded on the optical disc, a servo 14 controlling the operations of the pick-up unit 11, a signal processor 13 either recovering the playback signal received from the pick-up unit 11 to a desired signal value, or modulating a signal to be recorded to an optical disc recordable signal and transmitting the modulated signal, and a microcomputer 16 controlling the above operations.
• a controller 12 downloads the sub data existing in an external source according to a user command and stores the downloaded sub data in a local storage 15.
• the controller 12 then creates a new composite PlayList for reproducing the main data recorded within the optical disc and the sub data stored in the local storage 15. Thereafter, in accordance with the user command, the controller 12 reproduces the main data and the sub data by using the composite PlayList.
• An AV decoder 17 performs a final decoding of an output data (i.e., the main data and/or the sub data) in accordance with the control of the controller 17 and provides the decoded data to the user.
• an AV encoder 18 converts an input signal to a specific format signal (e.g., an MPEG2 transport stream) according to the control of the controller 12 and provides the converted signal to the signal processor 13.
• a specific format signal e.g., an MPEG2 transport stream
• the local storage 15 storing the sub data may also be configured, for example, as a hard disc drive (HDD) .
• the newly created composite PlayList may either be stored in the local storage 15 for future usage or be temporarily stored in a separate dynamic memory and used.
• HDD hard disc drive
• the optical recording and/or reproducing apparatus separately creates the new composite PlayList.
• the composite PlayList may also be downloaded and stored.
• the optical recording and/or reproducing apparatus 10 is not required to create another separate composite PlayList .
• disc_id disc identification
• SlO local storage 15
• auxiliary audio stream Aux Audio 1
• second auxiliary audio stream Aux Audio 2
• an auxiliary presentation graphic stream Aux PG
• the controller 12 selects a reproduction (or playback) stream in accordance with a user's request or system settings (S20) .
• the controller 12 may notify the user that the sub data exists, and then the controller 12 may either reproduce only the main data recorded in the disc or select and reproduce the composite PlayList including the sub data within the local storage, in accordance with the user command or system settings.
• the controller 12 creates a reproduction management file for managing reproduction of the combined data, such as a composite PlayList file, and uses the newly created reproduction management file to reproduce the data (S202) . Accordingly, the newly created composite PlayList file is stored in the local storage 15, which can be used again when reproducing the sub data in a later process.
• the composite PlayList that is already stored in the local storage 15 is used, and reproduction of data can be immediately performed without having to create a new composite PlayList. Furthermore, as described above, the composite PlayList may also be downloaded and used.
• preferred embodiments of the inner structure of the reproduction management files according to the present invention will now be described in detail with reference to FIG. 6A to FIG. 9D.
• the main data is reproduced by at least one Playltem included in the main path within the PlayList file.
• the sub data is reproduced by a SubPlayltem included in the sub path within the PlayList file.
• the SubPlayltem included in the sub path for the sub data is either associated with each Playltem included in the main path (as shown in FIG. 6A to FIG. 6E) or associated with an entire PlayList reproduction (or playback) section within the main path (as shown in FIG. 9A to FIG. 9C) .
• auxiliary audio stream (AUX Audio) or the auxiliary Presentation Graphic (PG) stream is appropriate to be used as the sub data in the present invention.
• the auxiliary stream within the sub data may be configured in a language different from the main stream included in the main data.
• the sub data may be configured to have a different attribute.
• Such attribute may include a difference in channel number, a difference in coding type, and so on.
• the contents of the auxiliary stream may be configured differently. Accordingly, in the description of the present
• auxiliary audio stream and the auxiliary presentation graphic stream will be given as examples of the sub data.
• the related information is prepared in advance by the author of the disc and downloaded along with the sub data. Accordingly, the "Info" that is stored in the local storage 15, as shown in FIG. 5A, represents the information for configuring the composite PlayList.
• FIGs. 6A to 6E and FIGs. 7A to 7D illustrate embodiments of the SubPlayltem within the composite PlayList being associated with each of the Playltems, among the method of configuring the composite PlayList. Accordingly, FIGs. 6A to 6E illustrate examples of configuring a SubPlayltem, among the methods of configuring the composite PlayList according to the present invention. Referring to FIG. 6A, in configuring the SubPlayltem within the sub path, the SubPlayltem, which is matched by one-to-one correspondence with each Playltem within the main path, is configured independently.
• a main audio stream that is included in a main clip and designated by each Playltem may be replaced with the auxiliary audio stream that is included in a sub clip and designated by each of the corresponding SubPlayltems.
• the main audio stream recorded within the optical disc is replaced with the auxiliary audio stream stored in the local storage 15.
• the SubPlayltem which is matched by one-to-one correspondence with each Playltem within the main path, is configured independently.
• a matching SubPlayltem may not exist for all of the Playltems.
• by designating a SubPlayltera corresponding to a specific Playltem within the PlayList only the main audio stream that is included in the main clip and designated by the specific Playltem may be replaced with the auxiliary audio stream that is included in the sub clip and designated by the corresponding SubPlayltem.
• the video signal is reproduced from the main video stream recorded within the disc.
• the audio signal is reproduced from the auxiliary video stream recorded in the local storage 15.
• the optical disc is reproduced from the main audio stream that is included in the main path and designated by the Playltem.
• a section of the main audio stream within the optical disc is replaced with the auxiliary audio stream stored in the local storage 15.
• FIG. 6A and FIG. 6B a plurality of matching SubPlayIterns may exist for a single Playltem.
• FIG. 6C a plurality of matching SubPlayltems exists for one Playltem.
• 6C only illustrates an example for a single Playltem
• Playltems (Playltem #2, Playltem #3) as well.
• the main audio stream that is included in the main clip and designated by Playltem may be replaced with the auxiliary audio stream that is included in the plurality of sub clips and designated by the corresponding plurality of SubPlayltems.
• a main audio signal that is reproduced by Playltem #1 may be reproduced by being replaced with two auxiliary audio signals for each section, both signals having a different attribute (e.g., language) . Therefore, when reproducing the optical disc using the above-described composite PlayList, the video signal is reproduced from the main video stream which is recorded in the optical disc, and, when a SubPlayltem exists in accordance with a sub path, the
• the SubPlayltem matching with each Playltem within the main path is configured independently.
• the SubPlayltems that match with a Playltem may exist only in a partial section among the entire section that is reproduced by the Playltem. More specifically, in FIG. 6A, FIG. 6B, and FIG. 6C, one or more SubPlayltems matches with one entire Playltem section.
• FIG. 6A, FIG. 6B, and FIG. 6C one or more SubPlayltems matches with one entire Playltem section.
• the SubPlayltem corresponding to one Playltem exists only in a partial section.
• the entire section that is reproduced by the corresponding Playltem includes each of a main audio stream that is included in the main clip and designated by the Playltem, and an auxiliary audio stream that is included in the sub clip and designated by the SubPlayltem.
• the main audio signal and the auxiliary audio signal having a different attribute (e.g., language) in only part of the entire section, which is reproduced by Playltem #1, is reproduced.
• the video signal is reproduced from the main video stream recorded within the disc, and part (or a partial section) of the entire presentation section of the audio signal, which is reproduced by a specific Playltem, is reproduced from the auxiliary audio stream that is recorded in the local storage 15 and designated by the SubPlayltem within the sub path.
• the reproduction section (or presentation section) of the SubPlayltem within the sub path is not required to be identical with the Playltem within the main path, the SubPlayltem can apply the auxiliary audio stream more diversely.
• the reproduction (or presentation) of the main clip and the reproduction (or presentation) of the sub clip is created.
• the main clip is reproduced by a Playltem (e.g., Playltem #1) , and then, the reproduction of the main clip is changed to the reproduction of the sub clip.
• Playltem e.g., Playltem #1
• the system needs to be supported so that a seamless presentation can be performed between the audio streams even at the boundary.
• Playltem within the main path is configured independently.
• each of the SubPlayIterns is matched with its respective Playltem by different methods. More specifically, in FIG. 6E, the examples of configuring the SubPlayltem as shown in FIGs. 6A to 6D can be applied to each Playltem.
• the method of replacing the entire section of Playltem #1 with a SubPlayltem (as shown in FIG. 6A or FIG. 6B)
• the method of replacing the entire section of Playltem #2 with a plurality of SubPlayIterns as shown in FIG. 6C
• the method of replacing only part of the entire section of Playltem #3 with a SubPlayltem are all applied in FIG. 6E.
• FIGs. 7A to 7D illustrate examples of configuring a SubPath, among the methods of configuring the reproduction management files according to the present invention. Accordingly, the method for configuring a SubPlayltem within the sub path may be applied to any one of the examples shown in FIGs. 6A to 6E. However, in case of FIG. 7D, a new method for configuring the SubPlayltem is illustrated, which will be described in detail in a later process.
• a sub path is configured for each auxiliary data stream.
• the sub paths may be configured so that Sub path #1 designates Auxiliary Audio stream #1, Sub path #2 designates Auxiliary Audio stream #2, and Sub path #3 designates the Auxiliary Presentation Graphic stream. Therefore, when the above-described composite PlayList is reproduced, one of Sub path #1 and Sub path #2, which designates the same auxiliary stream file stored in the local storage 15, is selected and reproduced along with the main data that is recorded within the disc and designated by the main path.
• Sub path #3 which designates the Auxiliary Presentation Graphic stream may also be reproduced. Referring to FIG.
• a sub path is configured for each auxiliary data stream attribute.
• Sub path #1 is configured to designate the auxiliary audio stream. Therefore, the corresponding Sub path #1 designates and manages all of the sub data, which is stored in the local storage 15 and
• Auxiliary Audio stream #1 is defined and managed as group #1
• Auxiliary Audio stream #2 is defined and managed as group #2.
• path #2 is configured to designate the auxiliary presentation graphic (PG) stream. Therefore, the corresponding Sub path #2 designates and manages all of the sub data, which is stored in the local storage 15 and corresponds to the same disc, having the auxiliary presentation graphic (PG) stream attribute. More specifically, Auxiliary Presentation Graphic
• (PG) stream #1 is defined and managed as group #1, and
• Auxiliary Presentation Graphic (PG) stream #2 is defined and managed as group #2. Therefore, when the above-described composite PlayList is reproduced, each of Sub path #1 and Sub path #2, which designates the sub data stored in the local storage 15, is reproduced along with the main data that is recorded within the disc and designated by the main path. However, when reproducing Sub path #1 and Sub path #2, one of group #1 and group #2 designated within each sub path may be selectively reproduced.
• a plurality of auxiliary data streams may be configured in a single sub path. More specifically, a sub path is configured for reproducing the sub data stored in the local storage 15, and a plurality of groups is formed for each auxiliary data stream within the corresponding sub path.
• group #1 may be defined to be related with Auxiliary Audio stream #1
• group #2 may be defined to be related with Auxiliary Audio stream #2
• group #3 may be defined to be related with Auxiliary Presentation Graphic (PG) stream. Therefore, when the above-described composite PlayList is reproduced, the sub path designating the sub data stored in the local storage 15 is reproduced along with the main data
• a plurality of auxiliary data streams may be configured in a single sub path.
• a composite SubPlayltem for reproducing the sub data is created within the sub path. More specifically, a sub path is configured for reproducing the sub data stored in the local storage 15, and a composite SubPlayltem (composite SubPlayltem #1, #2, #3) matching with each of the Playltems (Playltems #1, #2, #3) within the main path is created within the corresponding sub path.
• each of the composite SubPlayltems compositely manages at least one of the auxiliary data streams that is to be reproduced with the corresponding Playltem.
• the composite SubPlayltem #1 includes information for reproducing Sub clip #1, Sub clip #2, and Sub clip #3.
• each of Sub clip #1, Sub clip #2, and Sub clip #3 reproduces Auxiliary Audio stream #1, Auxiliary Audio stream #2, and Auxiliary Presentation Graphic (PG) stream, respectively, which are stored in the local storage 15. All of Sub clip #1, Sub clip #2, and Sub clip #3 are reproduced simultaneously or selectively with the main clip that is designated by Playltem #1.
• the method of configuring each of composite SubPlayltem #2, and composite SubPlayltem #3 is not illustrated in FIG.
• FIGs. 8A to 8C and FIGs. 9A to 9D illustrate embodiments of the SubPlayltem being associated with the entire section of the Playltem, among the method of configuring the composite PlayList. Accordingly, FIGs. 8A to 8C illustrate examples of configuring a SubPlayltem, among the methods of configuring the composite PlayList according to the present invention.
• a SubPlayltem matching with the entire section of the PlayList is configured independently. More specifically, by designating a SubPlayltem that simultaneously corresponds to all Playltems within the PlayList, the main audio streams included in the main clip and designated by each Playltem may be replaced with the auxiliary audio stream included in a single sub clip and designated by a corresponding single SubPlayltem.
• the system can be simplified. Therefore, when reproducing the optical disc using the above-described composite PlayList, the video signal is reproduced from the main video stream recorded within the disc, and the audio signal is reproduced from the auxiliary audio stream that is recorded in the local storage 15.
• a SubPlayltem matching with the entire section of the PlayList is configured independently.
• a presentation section is chrono-logically defined within the SubPlayltem. More specifically, in case of FIG. 8A, a SubPlayltem includes an In-time and an Out-time. However, in case of FIG. 8B, a SubPlayltem includes a plurality of In- times and Out-times. Accordingly, each section defined as an In-time and an Out-time is referred to as a "time slot" . For example, FIG.
• the time slot 8B illustrates three time slots "Time slot #1", “Time slot #2", and "Time slot #3" included in a SubPlayltem.
• the time slot may be created from a random section. However, the time slot may also be matched with Playltem #1, Playltem #2, and Playltem #3 within the main path. Therefore, when reproducing the optical disc using the above- described composite PlayList, the video signal is reproduced from the main video stream recorded within the disc, and the audio signal is reproduced from the auxiliary audio stream that is recorded in the local storage 15. However, reproduction (or presentation) is performed in' accordance with the In-time and Out-time designated by each of Time slot #1, #2, and #3. In other words, the main audio stream recorded on the optical disc is replaced with an auxiliary audio stream stored in the local storage 15.
• a SubPlayltem matching with only a partial section of the entire PlayList section is configured independently. More specifically, part of the entire main data presentation section reproduced (or presented) by the PlayList is replaced with the sub data. For example, part of
• the entire section that is reproduced by the composite PlayList reproduces the main audio signal, and another part of the entire section reproduces the auxiliary audio signal. Therefore, when reproducing the optical disc using the above- described composite PlayList, the video signal is reproduced from the main video stream recorded within the optical disc.
• the audio signal part of the entire section of the audio signal reproduced by the composite PlayList is reproduced from the main audio stream within the main path. And, another part of the audio signal is reproduced from the auxiliary audio stream recorded in the local storage 15 and designated by the SubPlayltem.
• the SubPlayltem since the reproduction section (or presentation section) of the SubPlayltem within the sub path is not required to be identical with the Playltem within the main path, the SubPlayltem can apply the auxiliary audio stream more diversely. However, in this case, a boundary between the reproduction (or presentation) of the main clip and the reproduction (or presentation) of the sub clip is created.
• FIG. 8B may also be identically applied in FIG. 8C.
• FIGs. 9A to 9D illustrate examples of configuring a SubPath, among the methods of configuring the reproduction management files according to the present invention. Accordingly, the method for configuring a SubPlayltem within the sub path may be applied to any one of the examples shown in FIGs. 8A to 8C. However, in case of FIG. 9D, a new method for configuring the SubPlayltem is illustrated, which will be described in detail in a later process.
• a sub path is configured for each auxiliary data stream.
• the sub paths may be configured so that Sub path #1 designates Auxiliary Audio stream #1, Sub path #2 designates Auxiliary Audio stream #2, and Sub path #3 designates the Auxiliary Presentation Graphic stream. Therefore, when the above-described composite PlayList is reproduced, one of Sub path #1 and Sub path #2, which designates the same auxiliary stream file stored in the local storage 15, is selected and reproduced along with the main data that is recorded within the disc and designated by the main path.
• Sub path #3 which designates the Auxiliary Presentation Graphic stream may also be reproduced.
• a sub path is configured for each auxiliary data stream attribute.
• Sub path #1 is configured to designate the auxiliary audio stream. Therefore, the corresponding Sub path #1 designates and manages all of the sub data, which is stored in the local storage 15 and corresponds to the same disc, having the auxiliary audio stream attribute. More specifically, Auxiliary Audio stream #1 is defined and managed as group #1, and Auxiliary Audio stream #2 is defined and managed as group #2. Similarly, Sub path #2 is configured to designate the auxiliary presentation graphic (PG) stream.
• PG auxiliary presentation graphic
• the corresponding Sub path #2 designates and manages all of the sub data, which is stored in the local storage 15 and corresponds to the same disc, having the auxiliary presentation graphic (PG) stream attribute. More specifically, Auxiliary Presentation Graphic (PG) stream #1 is defined and managed as group #1, and Auxiliary Presentation Graphic (PG) stream #2 is defined and managed as group #2. Therefore, when the above-described composite PlayList is reproduced, each of Sub path #1 and Sub path #2, which designates the sub data stored in the local storage 15, is reproduced along with the main data that is recorded within the disc and designated by the main path. However, when reproducing Sub path #1 and Sub path #2, one of group #1 and group #2 designated within each sub path may be selectively reproduced. Referring to FIG.
• a plurality of auxiliary data streams may be configured in a single sub path. More specifically, a sub path is configured for reproducing the sub data stored in the local storage 15, and a plurality of groups is formed for each auxiliary data stream within the corresponding sub path. For example, group #1 may'be defined to be related with Auxiliary Audio stream #1, group #2 may be defined to be related with Auxiliary Audio stream #2, and group #3 may be defined to be related with Auxiliary Presentation Graphic (PG) stream. Therefore, when the above-described composite PlayList is reproduced, the sub path designating the sub data stored in the local storage 15 is reproduced along with the main data that is recorded .within the disc and designated by the main path.
• PG Auxiliary Presentation Graphic
• a plurality of auxiliary data streams may be configured in a single sub path.
• a composite SubPlayltem for reproducing the sub data is created within the sub path. More specifically, a sub path is configured for reproducing the sub data stored in the local storage 15, and a composite SubPlayltem (composite SubPlayltem #1) corresponding to a reproduction time (or presentation time) within the main path is created within the corresponding sub path.
• the composite SubPlayltem includes information for reproducing Sub clip #1, Sub clip #2, and Sub clip #3.
• each of Sub clip #1, Sub clip #2, and Sub clip #3 reproduces Auxiliary Audio stream #1, Auxiliary Audio stream #2, and Auxiliary Presentation Graphic (PG) stream, respectively, which are stored in the local storage 15.
• Sub clip #1, Sub clip #2, and Sub clip #3 are reproduced simultaneously or selectively with a main clip that is designated by each of Playltem #1, Playltem #2, and Playltem #3.
• FIGs. 1OA to 1OF illustrate syntaxes of the composite PlayList file for reproducing the sub data stored in the local storage 15 by each hierarchy.
• FIG. 1OA illustrates the syntax of a header portion of the PlayList file (xxxxx.mpls) .
• An identification information such as an "MPLS" character code, identifying the current file as a PlayList file is recorded in a "type_indicator” field.
• Information indicating the version of the PlayList file is recorded in a "version_number” field.
• a position information indicating at which position a "PlayList ()" field starts is recorded in a
• PlayList_start_address a position information indicating at which position a "PlayListMark() " field starts is recorded in a "PlayListMark_start_address” field.
• the PlayList file (xxxxx.mpls) includes an "ApplnfoPlayList ()” field, a "PlayList ()” field, and a “PlayListMark()” field.
• the "ApplnfoPlayList () " field includes information on the reproduction (or playback) method (i.e., PlayList_playback_type) .
• the "PlayList ()” field includes Playltem information and Sub path information
• the "PlayListMark() " field includes a mark pointer which is used for special reproduction (or playback) .
• FIG. 1OB illustrates a header syntax of the "PlayList ()" field included in the PlayList file.
• information on the size of the "PlayList ()” field is recorded in a “length” field.
• Information on the number of Playlterns included in the PlayList file is recorded in a "number_of_PlayItem” field, and information on the number of sub paths included in the PlayList file is recorded in a “number_of_SubPaths” field.
• “PlayltemO” fields and “SubPathO” fields are created based upon the above-described number information.
• the "PlayltemO” field includes an "STN_table () " field, wherein all of the stream information that can be used in the corresponding Playltem.
• the optical recording and/or reproducing apparatus 10 may select and reproduce a stream information defined within the "STN_table () " field. Therefore, all of the above- described stream information (shown in FIG. 6A to FIG. 9D)
• FIG. 1OC illustrates a header syntax of the "STN_table () " field included in the "PlayltemO” field. More specifically, a size information of the u STN_table () " field is recorded in a "length” field. The number of reproduceable
• FIG. 1OD illustrates a syntax of a "stream__entry() " field, which is included in the "STN_table () " field. More specifically, a size information of the "stream_entry() " field is recorded in a "length” field, and a source information of the corresponding stream is recorded in a "type” field.
• type "1" represents a stream type that is included in the main clip and designated by the Playltem.
• Type "2” represents a stream type that is designated by the sub path and recorded within the optical disc.
• type "3” represents a stream type that is designated by the sub path and stored in the local storage 15. Therefore, when the type of the current "stream_entry() " field is "1”, a Packet ID (PID) information of the corresponding main clip is recorded in a "ref_to _stream_PID_of_mainclip" field. And, when the type of the current "stream_entry() " field is "2” or "3", a Packet ID
• FIG. 1OE illustrates a syntax of a "stream _attributes () " field, which is included in the "STN_table () " field. More specifically, a size information of the "stream _attributes () " field is recorded in a "length” field, and information of a stream type is recorded in a "stream __coding_type” field.
• the attribute information includes an "audio_jpresentation_type” , wherein information on the number of channels when reproducing (or presenting) the audio stream is recorded, and an ⁇ audio_language_code” field, wherein a language information of the audio stream is recorded.
• the attribute information includes a "PG_language_code” , wherein information of the language used in the presentation graphic is recorded.
• the attribute information includes an "IG_language _code” , wherein information of the language used in the interactive graphic is recorded.
• the attribute information includes a "textST_language_code” , wherein information of the language used in the text subtitle
• FIG. 1OF illustrates a header syntax of a ⁇ SubPath()" field that is included in the "PlayList () " field. More specifically, a size information of the "SubPath ()” field is recorded in a "length” field, and information of a stream type is recorded in a u stream_coding__type” field, and a source information of the corresponding sub path is recorded in a "SubPath_type” field.
• SubPath_type "n” represents the sub path recorded within the optical disc
• SubPath_type "m” represents the sub path stored in the local storage 15.
• a plurality of sub paths may be configured for each stream attribute (e.g., as shown in FIG. 7A, FIG. 7B, FIG. 9A, and FIG. 9B) .
• the sub paths types are described in more detail .
• SubPath_type “nl” or “ml” may represent the audio stream
• SubPath_type “n2” or “m2” may represent the text subtitle stream
• SubPath_type “n3” or “m3” may represent the interactive graphic stream
• SubPath_type “n4" or “m4" may represent the presentation graphic stream.
• a flag information indicating whether sub path presentation is to be repeated or not is recorded in a "is_repeat_SubPath” field.
• the number of SubPlayIterns included in the sub path is recorded in a "number_of_SubPlayItems” field.
• Information corresponding to each SubPlayltem is recorded in a "SubPlayltem()" field.
• 1OG illustrates a syntax of a "SubPlayltem()" field, which is included in the "SubPathO" field. More specifically, a size information of the "SubPlayltem() " field is recorded in a "length” field, the name of a sub clip that is stored in the local storage 15 and managed by the corresponding SubPlayltem is recorded in a
• SubPlayltem_IN_time (1, 2, ..., k) " field
• SubPlayItem_OUT_time (1, 2, ..., k) " field.
• a presentation start time (IN_time) and a presentation end time (0UT_time) are required for each "Time__slot” . Therefore, a plurality of "SubPlayItem_IN_time” fields and "SubPlayItem_OUT_time” fields should be included in the "SubPlayltem() " field.
• a Playltem identification information (e.g., Playltem #1, Playltem #2, Playltem #3) associated with the presentation start of the SubPlayltem is recorded in a ⁇ sync_PlayItem_id" field.
• Information associated with the presentation start time of the SubPlayltem is recorded in a "sync_start_PTS_of_PlayItem” field. More specifically, when the presentation of the Playltem reaches a specific time designated by the identification information recorded in the "sync_PlayItem_id" field, information for staring presentation of the SubPlayltem is recorded in the "sync__start_PTS_of_PlayItem” field.

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