JP2009505312A - Recording medium, data reproducing method and reproducing apparatus, and data recording method and recording apparatus - Google Patents

Abstract

A recording medium having a data structure for managing reproduction of at least one picture-in-picture presentation path is provided.
A data area for storing a first video stream representing a first presentation path and a second video stream representing a picture-in-picture presentation path relating to the first presentation path; a position for displaying the second video stream A management area for storing management information for managing reproduction of the picture-in-picture presentation path, and including configuration information including position information for indicating at least one picture-in-picture presentation path. A recording medium having a data structure to be managed is configured.

Description

  The present invention relates to a recording / reproducing method, a recording / reproducing apparatus, and a recording medium.

  As recording media, optical discs capable of recording large volumes of data are widely used. In particular, recently, new high-density recording media capable of recording and storing high-quality video data and high-quality audio data over a long period of time, such as Blu-ray Disc (BD) and high-density Digital video discs (High Definition Digital Versatile Disc: HD-DVD) have been developed.

  High-density recording media, the next-generation recording media technology, is a next-generation optical recording solution that can store data that far exceeds existing DVDs, and is being developed along with other digital devices. Has been. In addition, development of an optical recording / reproducing apparatus applying a high density recording medium standard has also started.

  With the development of high-density recording media and optical recording / reproducing devices, it has become possible to simultaneously reproduce a plurality of videos. However, a preferred method for simultaneously reproducing a plurality of videos is not yet known, and since a high-density recording medium standard is not completely provided, an optical recording / reproducing apparatus based on a full-scale high-density recording medium is completed. It was difficult to develop.

  The present invention relates to a recording medium having a data structure for managing reproduction of at least one picture-in-picture presentation path.

  In an embodiment of the present invention, a first video stream representing a first presentation path and a second video stream representing a picture-in-picture presentation path related to the first presentation path are stored in a data area of a recording medium. The Management information for managing picture-in-picture presentation path playback is stored in a management area of a recording medium. The management information includes configuration information including position information indicating a position for displaying the second video stream.

  For example, the position information may include vertical position information representing a vertical position in which an uppermost left pixel of the second video stream is displayed on the display of the first video stream. As another example, the position information may include horizontal position information representing a horizontal position at which an uppermost left pixel of the second video stream is displayed on the display of the first video stream. The configuration information may include scale information indicating a size for displaying the second video stream.

  As yet another embodiment, the management information includes timing information that instructs the start of a section in which the configuration information is valid.

  As yet another embodiment, the management information may include picture-in-picture timeline information. The picture-in-picture timeline information indicates whether the timing information refers to one of a play item timeline and a sub-pass timeline. The play item indicates a playback section of the first video stream, and the subpath indicates a playback section of the second video stream.

  As yet another embodiment, a first video stream representing a first presentation path and a second video stream representing a picture-in-picture presentation path related to the first presentation path are stored in a data area of a recording medium. . Management information for managing picture-in-picture presentation path playback is stored in a management area of a recording medium. The management information includes configuration information including scale information indicating a size for displaying the second video stream.

  The present invention also relates to a method and apparatus for recording picture-in-picture video data on a recording medium, and a method and apparatus for reproducing picture-in-picture video data from the recording medium.

  Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The same reference numbers throughout the drawings are used to refer to the same or like parts.

  In the following description, an exemplary embodiment of the present invention will be described by taking an optical disk as a recording medium, in particular, a “Blu-ray Disc (BD)” as an example. The present invention can be similarly applied to a recording medium.

  The “storage” in the present invention is a kind of storage means provided in an optical recording / reproducing apparatus (see FIG. 1), and arbitrarily stores and uses information and data required by a user. Means an element that can. That is, currently commonly used storage includes “hard disk”, “system memory”, “flash memory”, etc., but the present invention is not necessarily limited to the above.

  In the present invention, the “storage” is also used as a means for storing data related to a recording medium (for example, a Blu-ray disc). Generally, data stored in the storage in relation to the recording medium is Data downloaded from the outside.

  It is also possible to read partially accepted data directly from the recording medium or generate system data (eg metadata) associated with recording and playback of the recording medium and store it in the storage is there.

  In the present invention, for convenience of explanation, the data recorded in the recording medium is named “original data”, and the data related to the recording medium among the data stored in the storage is “additional data”. It is named “data (additional data)”.

  Also, the “title” in the present invention refers to a playback unit that serves as an interface with the user. Each title is linked to a specific object, and a stream associated with the corresponding title recorded in the disc is reproduced by a command or program in the object. In particular, in the present invention, for convenience of explanation, among titles including video data in the MPEG2 compression format, seamless multi-angle, multi-story, language credit, director's cuts. ) Name a title that supports features such as trilogy collections as "HDMV title". Also, among titles that include video data in the MPEG2 compression format, titles that provide a blogable application environment as well as connectivity to the network and enable the content provider to implement high interactivity. It is named “BD-J Title”.

  FIG. 1 is a diagram showing an embodiment in which an optical recording / reproducing apparatus and a peripheral device according to the present invention are used in combination.

  An “optical recording / reproducing apparatus 10” according to an embodiment of the present invention is an apparatus capable of recording or reproducing optical discs of various standards. Depending on the design, only an optical disc of a specific standard (for example, BD) can be recorded / reproduced. It is also possible to exclude only recording and perform only reproduction. However, in consideration of the linkage between the Blu-ray Disc (BD) and peripheral devices to be solved by the present invention, in the following description, a player (BD-recorder) or Blu-ray Disc (BD) that plays a Blu-ray Disc (BD) A recorder (BD-recorder) that records / reproduces (BD) will be described as an example. It is already widely known that the “optical recording / reproducing apparatus 10” of the present invention can be a “drive” that can be built in a computer or the like.

  In addition to the function of recording / reproducing the optical disc 30, the optical recording / reproducing apparatus 10 of the present invention receives an external input signal, processes the received signal, and passes it to the user through the external display 20. It has a function of transmitting in a visible form. There are no particular restrictions on the external signals that can be input, but digital broadcasts, the Internet, and the like can be representative external input signals. In particular, in the case of the Internet, it is a medium that anyone can now easily access, and specific data on the Internet can be downloaded and utilized through the optical recording / reproducing apparatus 10.

  Here, a person who provides content as an external input source is collectively referred to as a “content provider (CP)”.

  Content in the present invention means data provided by an author of a recording medium as the contents constituting a title.

  Hereinafter, the original data and the additional data will be specifically described. For example, a multiplexed AV stream for a specific title is recorded in the optical disc as original data, and the additional data on the Internet is different from the audio stream of the original data (for example, an English audio stream). Assume that there is an audio stream (eg, a Korean audio stream). In this case, depending on the user, an audio stream (for example, a Korean audio stream) that is additional data on the Internet is downloaded and played together with the AV stream that is the original data, or only the additional data is played. There should be a request to Therefore, in order to make such a request feasible, a systematic method for defining the relationship between the original data and the additional data and managing and reproducing these data according to the user's request is required. It becomes. The present invention seeks to provide a method for implementing the systematic method.

  In the above, for convenience of explanation, the signal recorded in the disc is named original data, and the signal existing outside the disc is named additional data. However, this is only classified by the method of acquiring each data, and the original data and the additional data are not necessarily limited to specific data. Therefore, any attribute data associated with the original data while existing outside the optical disk can be used as additional data.

  In order to realize the user's request, it is essential to have a file structure related to the original data and the additional data. Hereinafter, a file structure and a data recording structure that can be used in a Blu-ray disc (BD) will be described in detail with reference to FIGS.

  FIG. 2 is a diagram showing a file structure for reproducing and managing original data recorded in the disc.

  The file structure of the present invention includes at least one BDMV directory (BDMW) under one root directory. The BDMV directory (BDMV) includes an index file (“index”) and an object file (“movieObject”) as general file (upper file) information for ensuring bidirectionality with the user. In addition, the file structure includes a playlist directory (PLAYLIST), a clip info directory (CLIPINF), and a stream directory as directories having information on data actually recorded in the disc and information on a method of reproducing the data. (STREAM), auxiliary directory (AUXDATA), BD-J object directory (BDJO), metadata directory (META), backup directory (BACKUP), and JAR directory (JAR). Hereinafter, the directory and the files included in the directory will be described in detail.

  The metadata directory (META) includes a metadata file that is data for data. Examples of the metadata file include a search (search) file and a metadata file for a disc library (Disc Library). The metadata file is used for efficient search or management of data during data recording and reproduction.

  The BD-J object directory (BDJO) includes a BD-J object file for reproducing a BD-J title.

  The auxiliary directory (AUXDATA) includes additional data files necessary for disc playback. For example, the auxiliary directory (AUXDATA) is a “Sound.bdmv” file that provides sound when interactive graphics are executed, and “11111.otf” that provides font information while a disc is played. And a “999999.otf” file.

  The stream directory (STREAM) includes files for AV streams recorded in a specific format on the disc. Each stream is most commonly recorded in the transport packet format of the currently widely known MPEG-2 system. As the extension name of the stream file, “* .m2ts” is used (for example, 01000.m2ts, 02000.m2ts,...). In particular, among the streams, a stream in which video / audio / graphic information is multiplexed is referred to as an AV stream. The title is composed of at least one AV stream file.

  The clip info directory (CLIPINF) includes clip info files (01000.clpi, 02000.clpi,...). The clip info file has a one-to-one correspondence with each of the stream files ("* .m2ts"). In particular, the clip info file ("* .clpi") records attribute information, timing information, and the like of the stream file ("* .m2ts") corresponding to the clip info file. Here, the stream file ("* .m2ts") and the clip info file ("* .clpi") corresponding to this stream file ("* .m2ts") are collectively referred to as "clip". That is, “clip” means data including all stream files (“* .m2ts”) and corresponding clip info files (“* .clpi”).

  The playlist directory (PLAYLIST) includes a playlist file ("* .mpls"). A playlist refers to a combination of times during which a clip is played. The reproduction time is referred to as a play item. Each playlist file ("* .mpls") includes at least one play item and sub play item (SubPlayItem). The play item and the sub play item have information on a reproduction start time (IN-Time) and a reproduction end time (OUT-Time) of a specific clip desired to be reproduced. Therefore, the playlist can be said to be a combination of each play item.

  The process played by the at least one play item in the playlist file is defined as “main path”, and the process played by each sub play item is defined as “sub path”. To do. The main path provides a master presentation of the playlist, and the sub path provides auxiliary presentations associated with the master playback. The playlist file should include the main path, and at least one sub path may be included depending on the presence / absence of the sub play item. After all, the playlist file becomes a basic playback / management file unit in the entire playback / management file structure in which a desired clip is played back by a combination of at least one or more play items.

  In the present invention, the video data reproduced by the main path is named as a first video, and the video data reproduced by the sub path is named as a second video (secondary video). The function of the optical recording / reproducing apparatus for reproducing the first video and the second video together is also referred to as “picture-in-picture (PiP)”. In the present invention, the type of the subpath used to play the second video is classified based on the characteristics of the subpath, and information indicating the classified type of the subpath is provided. This will be described in detail with reference to FIG.

  The backup directory (BACKUP) is an index file ("index"), an object file (movie object, BD-J object), a unit in which information related to disc playback is recorded among data in the file structure. Key file (unit key file), all playlist files ("* .mpls") in playlist directory (PLAYLIST), and all clip info files ("* .clpi") in clip info directory (CLIPINF) Save a copy book for. The backup directory (BACKUP) is provided for separately storing a copy book of each file for backup in consideration of a fatal influence on disk reproduction when each file is lost.

  Here, the file structure of the present invention is not limited to the names and positions described above. That is, the directories and files should be understood as meanings that are not names and locations.

  FIG. 3 is a diagram showing a data recording structure recorded on an optical disc according to the present invention. FIG. 3 shows a form in which information related to the above-described file structure is recorded in the disc. Referring to FIG. 3, when viewed from the inner periphery of the disk, the disk includes a file system information area in which system information for managing the entire file is recorded and a recorded stream (* .m2ts). An area for recording an index file, an object file, a playlist file, a clip info file, and a metadata file for playback, and a stream area for recording a stream composed of audio / video / graphics or a JAR program file including.

  Further, the disc includes an area for recording file information for reproducing the content in the stream area. The area is referred to as a management area, and the file system information area and the database area correspond to the management area.

  However, each region in FIG. 3 is presented as an example, and the present invention is not limited to the arrangement structure of each region shown in FIG.

  Here, the stream data of the first video and / or the second video is stored in the stream area. In the present invention, the second video is multiplexed into the same stream as the first video, or is multiplexed into a different stream from the first video. In the present invention, a subpath type used for playing the second video, that is, information indicating the subpath type is stored in the management area. The subpath type is classified based on the type of stream in which the second video is multiplexed. Information on the timeline type of the second video metadata is stored in the management area. The second video metadata is data for managing reproduction of the second video. The timeline type information represents a timeline in which the metadata is defined. The metadata and the timeline type will be described with reference to FIGS. 9 and 10A to 10C.

  FIG. 4 is a diagram shown to help conceptual understanding of the second video of the present invention.

  It is an object of the present invention to provide a method for playing back second video data together with a first video. That is, the present invention provides an optical recording / reproducing apparatus that enables a PiP application and can efficiently perform the PiP application.

  Referring to FIG. 4, during playback of the first video, there may be a request to output other video data associated with the first video 410 to the same display 20. For example, during the playback of a movie or documentary, a director's comments or episodes on the filming process can be provided to the user together. The video providing the comment or episode becomes the second video 420. The second video 420 can be played back together with the first video 410 from the start of playback of the first video 410.

  The playback of the second video 420 may be started at an intermediate playback point of the first video 410. Also, the second video can be displayed on the display at different positions or different sizes on the screen according to the reproduction process. The second video 420 may be composed of a plurality of pieces, and the playback of the second video 420 may be started or ended separately from the playback of the first video. Of course, the first video may be played with the audio 410a associated with the first video and the second video may be played with the audio 420b associated with the second video.

  In order to play back the second video, information on the playback time, playback position, playback size of the second video, and the streams constituting the second video is provided. Also provided is information defining an audio stream, presentation graphic or text subtitle stream (eg, PiP PG textST stream) that is played along with the second video, and information defining possible playback combinations of each stream. Is done. In addition, the optical recording / reproducing apparatus is provided with a memory unit (for example, PSR) for storing information representing the reproduction state and reproduction environment of the second video. The present invention provides a method for efficiently playing the second video together with the first video while satisfying the above requirements. The present invention will be specifically described with reference to the drawings after FIG.

  FIG. 5 is a diagram showing an embodiment relating to the overall configuration of the optical recording / reproducing apparatus 10 of the present invention.

  Referring to FIG. 5, the optical recording / reproducing apparatus 10 includes a pickup 11 for reproducing management information including original data and reproduction management file information recorded on an optical disc, and a servo 14 for controlling the operation of the pickup 11. A signal processing unit that restores a reproduction signal received from the pickup 11 to a desired signal value, or modulates and transmits a signal to be recorded, for example, a first video and a second video to a signal recorded on an optical disk 13 and a microcomputer 16 for controlling the operation are basically included. The pickup 11, the servo 14, the signal processing unit 13, and the microcomputer 16 may be collectively referred to as a recording / reproducing unit. The recording / reproducing unit in the present invention reads data from the optical disc 30 or the storage 15 under the control of the controller 12, and provides this to the AV decoder 17b. That is, from the viewpoint of reproduction, the recording / reproducing unit functions as a reader unit that reads data. The recording / reproducing unit can receive the signal encoded by the AV encoder 18 and record video, audio data, and the like on the optical disc 30.

  The controller 12 downloads additional data other than the optical disc by a user command or the like and saves it in the storage 15, and also stores the additional data in the storage 15 and / or the original data in the optical disc at the request of the user. To play. The controller 12 according to the present invention generates management data for the second video, and controls the recording / reproducing unit so as to record the management data on the optical disc 30 together with the video data.

  The optical recording / reproducing apparatus 10 further includes a reproducing system 17 that finally decodes the data under the control of the controller 12 and provides the data to the user. In particular, the playback system 17 analyzes an AV decoder 17b that decodes an AV signal, an object command or application in association with the playback of the specific title described above, and a user command input through the controller 12. And a player model 17a for determining the reproduction direction. In some embodiments, the player model 17a may be used to include the AV decoder 17a. In this case, the playback system 17 of the present invention is a player model.

  The AV decoder 17b may include a plurality of decoders. FIG. 6 is a diagram schematically showing an embodiment of the reproduction system of the present invention.

  Referring to FIG. 6, the AV decoder 17b of the present invention includes a first video decoder 810a that decodes the first video and a second video decoder 810 that decodes the second video. The decoded first video is output through the first video plane 820a and provided to the user, and the decoded second video is output through the second video plane 820b and provided to the user. In particular, the controller 12 checks the metadata managing the playback of the second video, and controls the second video decoder 810b to be displayed at a specific position and size at the specific time according to the metadata. To do. The time, position and / or size has already been determined. The stream data of the first video and / or the second video is recorded on a recording medium, that is, the optical disc 30, or downloaded from the outside of the recording medium and stored in the storage 15. .

  The AV encoder 18 included in the optical recording / reproducing apparatus 10 shown in FIG. 5 converts an input signal into a signal of a specific format, for example, an MPEG2 transport stream, in order to perform a function of recording a signal on an optical disc. This is provided to the signal processing unit 13.

  FIG. 7 is a diagram showing an embodiment of a data reproducing apparatus using the reproducing system of the present invention. According to the present invention, the playback system plays back the second video and the first video together.

  The reproduction system refers to collective reproduction processing means composed of programs (software) and / or hardware provided in the optical recording / reproducing apparatus. That is, the reproduction system reproduces the recording medium loaded in the optical recording / reproducing apparatus and is stored in the storage in association with the recording medium (for example, downloaded from the outside of the recording medium). ) It means a system that can reproduce and manage data.

  Referring to FIG. 7, in particular, the playback system 17 includes a user event manager 171, a module manager 172, an HDMV module 174, a BD-J module 175, a playback control engine 176, a presentation engine 177, and a virtual file system 40. Hereinafter, such a configuration will be described in detail.

  As separate reproduction processing management means for reproducing the HDMV title and the BD-J title, an HDMV module 174 for the HDMV title and a BD-J module 175 for the BD-J title are independently configured. The HDMV module 174 and the BD-J module 175 each have a control function for receiving a command or program in the above-described object (movie object or BD-J object) and processing the received command or program. ing. The HDMV module 174 and the BD-J module 175 may allow portability of the command or application by separating related commands or applications from the hardware configuration of the playback system. The HDMV module 174 includes a command processor 174a as means for receiving and processing the command or application. The BD-J module 175 includes a Java VM (175) and an application manager 175b as means for receiving and processing the command or application.

  The Java VM 175a is a virtual machine on which an application is executed. The application manager 175b includes an application management function for managing a life cycle of an application processed by the BD-J module 175.

  The module manager 172 controls the operations of the HDMV module 174 and the BD-J module 175 as well as transmitting user commands to the HDMV module 174 and the BD-J module 175. The playback control engine 176 analyzes the playlist file actually recorded in the disc according to the playback command of the HDMV module 174 and the BD-J module 175, and performs a playback function according to the analysis result. The presentation engine 177 decodes a specific stream whose reproduction is managed by the reproduction control engine 176, and displays the decoded stream on a screen. In particular, the playback control engine 176 includes a playback control function 176a that actually manages all playbacks, and a player register that includes a player status register (player status register (PSR) and general purpose register (GPR)). 176b. In some cases, the regeneration control function 176a may mean the regeneration control engine 176.

  The HDMV module 174 and the BD-J module 175 each receive a user command by a separate method, and a method of performing a user command between them is independent. In order to receive a user command and transmit it to any one of the HDMV module 174 and the BD-J module 175, a separate transmission means is required. Such a function is performed by the user event manager 171. Accordingly, if the received command is a user command generated by a user operation (UO) controller 171a, the user event manager 171 may recognize this as a module manager 172 or a UO controller. 171a. On the other hand, if the received command is a user command generated by a key event, the user event manager 171 transmits the command to the Java VM 175a in the BD-J module 175.

  In addition, the playback system 17 of the present invention can include a metadata manager 173. The metadata manager 173 provides a user with a disk library and an enhanced search metadata application.

  The module manager 172, HDMV module 174, BD-J module 175, and playback control engine 176 in the playback system of the present invention are processed in software. In practice, processing with software rather than hardware configuration is more useful in design. Of course, the presentation engine 177, the decoder 19, and the plane are generally designed in hardware. In particular, in the case of components processed in software (for example, reference numerals 172, 174, 175, and 176), they may be configured as a part of the controller 12 described above. Therefore, the configuration of the present invention should be understood as meaning thereof, and is not limited to a hardware configuration or a software configuration. Here, the plane means a conceptual model for explaining the overlay process of the first video, the second video, PG (presentation graphics), IG (interactive graphics), and the text subtitle. In the present invention, the second video plane is arranged before the first video plane. Therefore, the second video output after being decoded is presented on the second video plane.

  FIG. 8 is a diagram showing an embodiment of a state memory unit provided in the optical recording / reproducing apparatus of the present invention.

  The player register 176b included in the optical recording / reproducing apparatus 10 functions as a kind of memory unit that stores information on the recording / reproducing state and recording / reproducing environment of the player. The player register 176b is divided into general purpose registers (general purpose registers (GPRs)) and player status registers (player status registers (PSRs)). Each player status register (PSR) may be a playback status parameter (eg, 'interactive graphics stream number' 710, 'primary audio stream number' 720), or an optical recording / playback device's parameter (eg, optical recording / playback device ') player capability for video '770). In the present invention, since the second video is reproduced in addition to the first video, a PSR for storing the reproduction state of the second video is required.

  The stream number of the second video is stored in one of the PSRs (for example, PSR14 760). In addition, a stream number of the second audio related to the second video is stored in the PSR (hereinafter, PSR14). Referring to FIG. 8, the optical recording / reproducing apparatus 10 includes the PSR 14 760 for storing the stream numbers of the second video and the second audio as described above. The second video stream number stored in the PSR14 760 is used to specify which second video stream should be presented from the second video stream entry in the STN table of the current play item. Similarly, the second audio stream number stored in the PSR14 760 is used to specify which second audio stream should be presented from the second audio stream entry in the STN table of the current play item. Is done. The STN table related to the present invention will be described with reference to FIG.

  The PSR 14 760 may include a flag indicating whether the second video presentation is enabled or disabled. For example, if the flag is set to enabled, the second video is decoded and presented to the user through the second video plane 820b. Conversely, if the flag is set to disabled, the user cannot view the second video even if the second video is decoded by the decoder 810b. The flag is changed by a user operation (UO), a command, or an application programming interface (hereinafter, API).

  In addition, the PSR14 760 may store the size of the second video. For example, when the size of the second video is set to '0x0' in the PSR14 760, the presentation of the second video is presented by the second video scale information described with reference to FIG. The size is adjusted. On the other hand, when the size of the second video is set to '0xF' in the PSR14 760, the size of the second video is adjusted to the full screen size regardless of the scale information. . In this connection, the second video is adjusted to the same size as the first video.

  In the present invention, the second video can be played together with a presentation graphic or a text subtitle (hereinafter, 'PG TextST'). Accordingly, a memory unit (e.g., PSR2 720) that stores information about 'PG TextST' (hereinafter, PiP PG TextST) for the second video is required. Therefore, if the second video stream is displayed during the presentation of the current play item, the 'PiP PG TextST' stream number value in the PSR2 720 indicates which PG stream or TextST stream is in the STN table of the current play item. Used to specify whether to be presented from the 'PG TextST' stream.

  On the other hand, if the second video stream is not displayed, that is, if the video presentation flag in PSR14 is set to disabled or there is no second video stream currently displayed during the presentation of the play item, The 'PG TextST' number of the PSR2 720 is used to specify which PG stream or TextST stream should be presented from the 'PG TextST' stream in the STN table of the current play item.

  The PSR2 720 may include a flag indicating whether or not the display of the “PG TextST” including the “PiP PG TextST” stream is possible. That is, if the flag stored in the PSR2 is set to disable, the 'PG TextST' stream is not displayed. On the other hand, if the flag is set to be enabled, the designated 'PG TextST' stream is displayed to the user. Similar to the second video presentation flag of PSR14 760, the flag of PSR2 720 is set between enable and disable by user operation (UO), command or application programming interface (API). Be changed.

  In addition, the PSR2 720 may include a flag indicating whether “PiP PG TextST” is valid. The flag is used to indicate what kind of 'PG TextST' stream number is used when the second video stream is displayed. For example, if the flag is set to '0b', the 'PG TextST' number defined in the PSR2 720 is used when the current second video stream is displayed during the presentation of the current play item. . The ‘PG TextST’ is a ‘PG TextST’ stream displayed in the first video program which is a main video. On the other hand, when the flag is set to '1b', the 'PiP PG TextST' stream number defined in the PSR2 is used. The flag has no effect on the optical recording / reproducing apparatus of the present invention when the second video stream is not displayed. In this case, a 'PG TextST' stream defined in the PSR2 720 may be used. The value of the flag is changed by a navigation command, user operation (UO) or application programming interface.

  The PSR is a memory unit (for example, PSR7 750) that represents information for identifying a play item that is currently being reproduced, and a memory unit (for example, PSR6) that represents information for identifying a playlist that manages the reproduction of a currently reproduced title. 740). Therefore, the optical recording / reproducing apparatus of the present invention can know the playlist currently being executed and the play item currently presented through the PSR6 740 and the PSR7 750.

  The PSR may include a memory unit (eg, PSR29 770) that represents the video capability of the optical recording / reproducing apparatus. The memory unit (hereinafter referred to as PSR29 770) can indicate, for example, whether or not HD (High Definition) second video can be played or whether or not video of a specific frequency (eg, 50 & 25 Hz) can be played. Navigation commands and system applications (eg, BD-J applications) cannot change the values contained in the PSR29 770.

  In the optical recording / reproducing apparatus of the present invention, the optical recording / reproducing apparatus has a function of processing a text subtitle. The specific function in the text subtitle can be processed as a selection item. Examples of the functions include a style set that can be changed by the user, a palette that can be changed by the user, an inline style, an outline border, or a text flow and alignment. There can be. Therefore, it is required to display the presence / absence of the player implementation capability using any one of the PSRs present in the optical recording / reproducing apparatus of the present invention. For example, PSR30 780 is used.

  When a part or all of the functions are converted into a function that should be implemented, it is possible to display the player implementation ability using PSR. That is, the display of the player realization ability using the PSR is a selective matter in the realization of the optical recording / reproducing apparatus.

  FIG. 9 is a diagram showing an example of management data according to the present invention.

  In order to play back the second video, management data including information on the playback attributes of the second video, such as playback time, playback size, and playback position, for example, metadata about the second video is required. The Hereinafter, the management data will be described by taking PiP metadata as an example.

  The metadata may exist in a playlist that is a kind of reproduction management file. FIG. 9 shows a case where there is a PiP metadata block in the 'ExtensionData' block of the playlist that manages the playback of the first video. The PiP metadata includes at least one block header (block_header [k]; 910) block and block data (block_data [k]; 920) block according to a metadata block entry stored in the PiP metadata block. Can do. The block header 910 includes header information of related metadata blocks, and the block data 920 includes data information of related metadata blocks.

  The block header 910 block includes a field indicating information identifying a play item (hereinafter, 'playitem_id' 910a) and a field indicating information identifying the second video stream (hereinafter, 'secondary_video_stream_id [k]' 910b). Can be included. The 'playitem_id [k]' 910a has a value for a play item including an STN table in which the 'secondary video_stream_id' entry specified by the 'secondary_video_stream_id [k]' 910b is listed. The 'playitem_id' value is given to the playlist block of the playlist file. In the PiP metadata, entries of “playitem_id” are classified in ascending order with respect to “playitem_id” recorded in the PiP metadata. The 'secondary_video_stream_id [k]' 910b is used to identify a sub-path and a second video stream to which the associated block data 920 is applied. This field represents a secondary_video_stream_id value in the STN table of the play item specified by 'playitem_id [k]'.

  The block header 910 may include information (hereinafter, 'pip_timeline_type' 910c) indicating which timeline the related PiP metadata refers to.

  FIGS. 10A to 10C are diagrams to help conceptual understanding of the timeline type of the present invention. Here, a time stamp indicating the point where the PiP metadata is located (hereinafter, 'pip_metadata_time_stamp' 921a) is included in the block data 920 block. The 'pip_timeline_type [k]' 910c is classified according to the type of the timeline to which the related 'pip_metadata_time_stamp [i]' entry refers.

  FIG. 10A is a diagram illustrating a case where the PiP presentation path is synchronized with the main path, and an entry of 'pip_metadata_time_stamp' refers to the timeline of the play item specified by the PiP metadata. In FIG. 10A, 'pip_metadata_time_stamp' determines the presentation time during the interval in which the related sub play item interval is projected on the timeline of the play item specified by 'playitem_id [k]' 910a. In the timeline type of FIG. 10A, 'pip_metadata_time_stamp [0]' and 'pip_metadata_time_stamp [m]' indicate that the related sub playitem section is projected onto the timeline of the playitem specified by 'playitem_id [k]' 910a. Are placed at the start points 101a and 105a of the respective sections.

  As described above, the PiP metadata includes block data 920. The block data 920 includes second video configuration information according to the number of 'pip_metadata_time_stamp' (hereinafter, 'pip_composition_metadata'). The 'i'th' 'pip_compositon_metadata' is valid in the interval from 'pip_metadata_time_stamp [i]' 102a to 'pip_metadata_time_stamp [i + 1]' 103a. The last 'pip_composition_metadata' existing in the block data 920 is valid from the last 'pip_metadata_time_stamp' to the presentation end time 104a of the subpath specified by 'secondary_video_stream_id' included in the PiP metadata.

  The configuration information of the second video is information indicating the playback position and playback size of the second video. Referring to FIG. 9, the configuration information may include position information and size information (hereinafter, pip_scale 921d) of the second video. The position information includes horizontal position information (hereinafter, 'pip_horizontal_position' 921b) information of the second video and vertical position information (hereinafter, 'pip_vertical_position' 921c) information of the second video. Hereinafter, an example of the second video position information according to the present invention will be described with reference to FIG. In FIG. 11, 'pip_horizontal_position' 921b represents the horizontal position 1101 of the second video displayed on the screen when viewed from the reference point of the screen. The 'pip_vertical_position' 921c represents the vertical position 1102 of the second video displayed on the screen when viewed from the reference point on the screen. The position where the second video is displayed on the screen is determined by the position information 921b and 921c.

  The size of the second video is determined by 'pip_scale' 921d. As described with reference to FIG. 8, the size of the second video is adjusted to the size of the first video. For efficient playback, the size of the second video may be set to a discontinuous value. The size of the second video is a ratio (scale) to the size of the first video, for example, “× 1”, “× 1/2”, “× 1/4”, “× 1.5”. It may be displayed.

  In the embodiment of FIG. 10A, since the PiP presentation path is synchronized with the main path, the subpath specified by the 'secondary_video_stream_id' 910b described above may be the first or second type subpath described with reference to FIG. It is common.

  In the case of the timeline type of FIG. 10A, the second video is played in synchronization with the main path, so that the second video also follows the timeline of the main path. That is, when the main path jumps or backs to a certain position, the second video is reproduced according to the position and scale information of 'pip_metadata_time_stamp' related to the time when the reproduction of the main path jumps or backs.

  FIG. 10B is a case where the PiP presentation path is not synchronized with the main path and the 'pip_metadata_time_stamp' entry refers to the timeline of the sub path. In the embodiment of FIG. 10B, since the PiP presentation path is not synchronized with the main path, the subpath specified by the above-mentioned 'secondary_video_time_stamp_id' 910b is generally the second type among the subpaths described with reference to FIG. is there. In the timeline type of FIG. 10B, 'pip_metadata_time_stamp' determines the presentation time within the sub play item section included in the sub path specified by 'secondary_video_stream_id [k]' included in the PiP metadata. In this timeline type, 'pip_metadata_time_stamp [0]' is preferably placed at the start point 101b of the sub play item included in the sub path designated by 'secondary_video_stream_id [k]'.

  In the case of the timeline type of FIG. 10B, since the second video refers to the timeline of the sub play item, the second video is played through the sub path regardless of the playback progress through the main path. Become. That is, the timeline type of FIG. 10B is that the presentation position and scale of the second video are not changed even if the playback point of the main pass is changed to a specific part of the timeline of the play item that constitutes the main pass. This is different from the timeline type of FIG. 10A.

  FIG. 10C shows a case where the PiP presentation path is not synchronized with the main path, and the 'pip_metadata_time_stamp' entry refers to the timeline of the play item specified by 'playitem_id [k]' included in the PiP metadata. Similar to the case of FIG. 10A, the timeline type of FIG. 10C also refers to the timeline of the play item. Therefore, the reproduction start time of the sub play item, that is, 'subplayItem_in_time' is projected on one point 102c of the time line of the play item. In the timeline type of FIG. 10C, 'pip_metadata_time_stamp' determines the presentation time in the playitem section specified by 'playitem_id [k]'. In the timeline type of FIG. 10C, it is preferable that 'pip_metadata_time_stamp [0]' is placed at the start point 101c of the play item section specified by the 'playitem_id [k]'. The timeline type of FIG. 11C is similar to the timeline type of FIG. 11A. In the case of the timeline type of FIG. 11C, 'pip_metadata_time_stamp [0]' is located at the start point 101c of the play item section. However, in the case of the timeline type of FIG. 11A, 'pip_metadata_time_stamp [0]' is a section in which the related sub playitem section is projected on the timeline of the playitem specified by the 'playitem_id [k]'. It is placed at the starting point 101a.

  The last 'pip_composition_metadata' existing in one block data 920 is valid until the presentation end time of the sub path specified by 'secondary_video_stream_id' included in the PiP metadata. Therefore, 'pip_metadata_time_stamp [1 + i] is valid until the current play item outtime 104c. However, since the second video is reproduced by the sub path, the second video is not displayed after the sub play item out time 103c.

  In the embodiment of FIG. 10C, the PiP presentation path is not synchronized with the main path, and therefore, the subpath specified by the above-described 'secondary_video_time_stamp_id' 910b is preferably the second type among the subpaths described with reference to FIG.

  In the case of the timeline type of FIG. 10C, when the playback position of the main path jumps or backs to a certain position, the metadata of the jumped or backed point is applied to the second video that has started playback. Referring to FIG. 10C, for example, the condition that 'pip_composition_metadata [i + 1]' corresponding to 'pip_metadata_time_stamp [i + 1]' is applied to the second video, and the playback position of the main path is from the position of 'pip_metadata_time_stamp [i + 1] i When returning to the position of [i], 'pip_composition_metadata [i]' corresponding to the 'pip_metadata_time_stamp [i]' is applied, and the second video is reproduced.

  The contents related to the time information, position information, size information, etc. in which the second video configuration information is valid described in the embodiment of FIG. 10A are similarly applied to the cases of FIGS.

  In the example of FIG. 9, the case where the playback time information and the configuration information of PiP are included in the playlist is taken as an example. However, each piece of information is included in the header of the second video stream that implements PiP. Is also possible.

  FIG. 12 is a diagram illustrating an example of a table including information on the second video stream according to the present invention. The table (hereinafter, STN table) defines a list of elementary streams that an optical recording / reproducing apparatus can select during presentation of a current play item and a sub-path associated with the current play item. Which of the main clip and sub-pass streams has an entry in the STN table of each play item is a problem for the disc manufacturer.

  The optical recording / reproducing apparatus of the present invention has a function of processing the second video, the second audio, the presentation graphic, and the text subtitle. Accordingly, the STN table of the present invention stores entries associated with the second video, the second audio, the presentation graphic, and the text subtitle.

  Referring to FIG. 12, the STN table of the present invention includes a second video stream number value corresponding to a 'secondary_video_stream_id' value. As defined in block 1250 of FIG. 12, the 'secondary_video_stream_id' starts from '0' and is incremented by '1' until it becomes equal to the number 1220 of second video streams defined in the STN table. can get. The second video stream number is the same as a value obtained by adding “1” to the “secondary_video_stream_id” value.

  A stream entry (stream_entry) block 1260 is defined in the STN table by the 'secondary_video_stream_id'. The stream entry block 1260 includes a type of database for identifying the basic stream specified by the stream number for the stream entry. The stream entry block of the present invention includes information for identifying a sub-path associated with playback of the second video and information for identifying a sub-clip entry defined in the sub-play item of the sub-path designated by the information.

  The optical recording / reproducing apparatus of the present invention identifies a stream entry block related to the reproduction of the second video based on 'playitem_id' 910a and 'secondary_video_stream_id' 910b included in the PiP metadata described with reference to FIG. can do. Since the stream entry block includes information for identifying an associated sub path and sub path clip entry, it is possible to play an appropriate stream for playing the second video. Since the second video is presented by the sub-pass, when the 'playitem_id' 910a and the 'secondary_video_stream_id' 910b are determined, the playback time of the second video and the playback order of each stream constituting the second video are determined. . 'Pip_metadata_time_stamp' 921a refers to the timeline of the related play item or sub play item by 'pip_timeline_type' 910c. The second video is presented at a specific position and in a specific size according to 'pip_composition_metadata' corresponding to the 'pip_metadata_time_stamp' 921a.

  The 'playtime_id' 910a, 'secondary_video_stream_id' 920b, 'pip_timeline_type' 910c and 'pip_metadata_time_stamp' 921a can be said to correspond to time information in the PiP metadata. This is because each piece of information is related to the playback time of the second video. However, from the viewpoint of the timeline followed by the PiP metadata, only 'pip_timeline_type' 910c and 'pip_metadata_time_stamp' 921a can be viewed as time information.

  In the present invention, the STN table includes a 'PiP PG textST' stream number value for a presentation graphic / text subtitle stream entry associated with a 'PiP_PG_textST_stream_id' value. The value of 'PiP_PG_textST_stream_id' is the same as the value of 'PG_textST_stream_id'. The 'PiP_PG_textST' stream number is obtained by adding '1' to 'PG_textST_stream_id'. As defined in block 1240 of FIG. 12, the value of the 'PG_textST_stream_id' starts with '0', the number of 'PG textST' stream entries 1210 and an additional 'PG textST' stream entry for the PiP application It is obtained by incrementing by “1” until it becomes equal to the value obtained by adding the number 1230.

  In reproducing the second video together with the first video according to the present invention, i.e., performing a PiP application, a second audio or 'PiP PG textST' stream is reproduced together with the second video. In this case, the playback relationship between the second video and the second audio or 'PG textST' played together with the second video needs to be defined. Accordingly, the STN table of the present invention includes information on the allowable combinations of the second video and the second audio and the allowable combinations of the second video and the 'PiP PG textST' stream.

  Referring to FIG. 12, the STN table in the play item of the present invention includes a 'comb_ino_Secondary_video_Secondary_audio' block 1270. The 'comb_ino_Secondary_video_Secondary_audio' block 1270 defines an allowed combination of a corresponding second video stream and a 'PiP PG textST' stream. That is, the block 1270 includes information on the second audio stream that is allowed to be played along with the second video stream. The second audio stream information may include, for example, the number of second audio streams allowed to be played together, and information for identifying the second audio stream (for example, secondary_audio_stream_id).

  The STN table includes a 'comb_info_Secondary_video_PiP_PG_textST' block 1280. That is, the block 1280 includes information on the 'PiP PG textST' stream that is allowed to be presented together with the second video stream. The 'PiP PG textST' stream information includes, for example, the number of 'PiP PG textST' streams allowed to be reproduced together and information for identifying the 'PiP PG textST' stream (for example, secondary_audio_stream_id). be able to.

  FIG. 13 is a diagram showing an embodiment of a data reproduction method according to the present invention.

  When the reproduction of the video data is started, the optical recording / reproducing apparatus 10 of the present invention checks the metadata for managing the reproduction of the second video (S10). The metadata includes information related to playback of the second video. Similar to the embodiment of FIG. 9, the metadata is included in a playlist file. The controller 12 controls the second video decoder 810b to decode the second video stream according to the metadata (S20). The metadata includes information on the playback time and composition of the second video. The configuration information includes 'pip_horizontal_position' 921b, 'pip_vertical_position' 921c, and 'pip_scale' 921d. As described with reference to FIG. 12, the time information may include 'playtime_id' 910a, 'secondary_video_stream_id' 920b, 'pip_timeline_type' 910c, and 'pip_metadata_time_stamp' 921a. Therefore, the second video decoder 810b decodes the second video at the position and size defined in the configuration information at the time defined in the time information. The decoded second video is provided to the user through the screen 20 on which the first video is displayed (S30).

  The first video and the second video are provided from the recording medium 30 or the storage 15 to the decoder. That is, all the first videos and second videos to be played are provided from the recording medium 30, or all the first videos and second videos to be played are provided from the storage 15. In addition, the first video can be provided from the recording medium 30 and the second video can be provided from the storage 15 except when the first video and the second video are multiplexed into the same stream. The opposite is also possible. However, if the first video and the second video are all stored in the recording medium, one of them should be copied to the storage 15 in order to play the first video and the second video simultaneously. .

  According to the recording medium, the data reproduction method and apparatus, and the data recording method and apparatus according to the present invention, the second video can be reproduced together with the first video. Furthermore, the reproduction can be performed efficiently. Therefore, the content provider can configure more various contents, and the user can experience more various contents.

  It will be apparent to those skilled in the art that the above-described embodiments of the present invention can be variously improved, changed, substituted or added within the technical idea and technical scope of the present invention disclosed in the claims. . Therefore, it is obvious that the present invention includes improvements and modifications of the present invention within the scope of the claims and the scope equivalent thereto.

It is the figure which showed one Example which reproduces | regenerates the data in a recording medium and / or storage through an optical recording / reproducing apparatus. It is the figure which showed the file structure recorded on the optical disk as a recording medium of this invention. It is the figure which showed the recording structure of the optical disk as a recording medium of this invention. FIG. 6 is a diagram shown to help conceptual understanding of the second video of the present invention. 1 is a diagram showing an overall configuration of an optical recording / reproducing apparatus of the present invention. It is the figure which showed roughly one Example of the reproduction | regeneration system of this invention. It is the figure which showed the data reproduction apparatus using the reproduction | regeneration system of this invention. It is the figure which showed one Example of the state memory unit with which the optical reproduction / recording apparatus of this invention was equipped. It is the figure which showed one Example of the management data based on this invention. FIG. 5 is a diagram shown to help conceptual understanding of the timeline type of the present invention. FIG. 5 is a diagram shown to help conceptual understanding of the timeline type of the present invention. FIG. 5 is a diagram shown to help conceptual understanding of the timeline type of the present invention. It is the figure which showed one Example of the 2nd video position information of this invention. It is the figure which showed one Example of the table containing the information regarding the 2nd video stream of this invention. It is the figure which showed one Example of the data reproduction method which concerns on this invention.

Claims (44)

A recording medium having a data structure for managing reproduction of at least one picture-in-picture presentation path,
A data area for storing a first video stream representing a first presentation path and a second video stream representing a picture-in-picture presentation path related to the first presentation path;
A management area for storing management information for managing reproduction of the picture-in-picture presentation path, including configuration information including position information indicating a position for displaying the second video stream. recoding media.   The position information includes vertical position information indicating a vertical position and horizontal position information indicating a horizontal position, in which an uppermost left pixel of the second video stream is displayed on a display of the first video stream. The recording medium according to claim 1.   The recording medium according to claim 2, wherein the configuration information includes scale information indicating a size for displaying the second video stream. A recording medium having a data structure for managing reproduction of at least one picture-in-picture presentation path,
A data area for storing a first video stream representing a first presentation path and a second video stream representing a picture-in-picture presentation path related to the first presentation path;
A management area for storing management information for managing reproduction of the picture-in-picture presentation path, including configuration information including scale information indicating a size for displaying the second video stream. recoding media.   The recording medium according to claim 4, wherein the scale information indicates a display scale of the second video stream with respect to the first video stream.   6. The recording medium according to claim 5, wherein the scale information indicates no scale, one half scale, one quarter scale, one half scale, and one full scale. A method for managing playback of at least one picture-in-picture presentation path, comprising:
At least a picture-in-picture presentation path including configuration information including position information indicating a position at which a second video stream is displayed that represents a picture-in-picture presentation path with respect to a first presentation path represented by the first video stream Replaying the management information to manage the replay of
Playing back the first video stream and the second video stream based on the management information.   The method of claim 7, wherein the position information includes vertical position information representing a vertical position at which an uppermost left pixel of the second video stream is displayed on the display of the first video stream.   The method of claim 7, wherein the position information includes horizontal position information that represents a horizontal position at which an uppermost left pixel of the second video stream is displayed on a display of the first video stream.   The method of claim 9, wherein the position information includes vertical position information representing a vertical position at which an uppermost left pixel of the second video stream is displayed on a display of the first video stream.   The method of claim 10, wherein the configuration information includes scale information including a size for displaying the second video stream.   The method of claim 11, wherein the scale information indicates a display scale of the second video stream relative to the first video stream.   13. The method of claim 12, wherein the scale information indicates no scale, one half scale, one quarter scale, one half scale, and full scale.   The method according to claim 10, wherein the management information includes timing information indicating a start of a section in which the configuration information is valid.   The management information includes picture-in-picture timeline information, and the picture-in-picture timeline information indicates whether the timing information refers to one of a timeline of a play item and a timeline of a sub path. 15. The method of claim 14, wherein the play item indicates a playback period of the first video stream, and the sub-path indicates a playback period of the second video stream.   The method of claim 15, wherein the picture-in-picture timeline information further indicates whether the second video stream is displayed in synchronization with the first video stream.   The method according to claim 7, wherein the management information includes timing information, and the timing information indicates a start of a section in which the configuration information is valid.   The management information includes picture-in-picture timeline information, and the picture-in-picture timeline information indicates whether the timing information refers to one of a timeline of a play item and a timeline of a sub path. The method of claim 17, wherein the play item indicates a playback period of the first video stream, and the sub-path indicates a playback period of the second video stream.   The method of claim 18, wherein the picture-in-picture timeline information further indicates whether the second video stream is displayed in synchronization with the first video stream.   The method of claim 7, wherein the configuration information includes scale information indicating a size with which the second video stream is displayed.   The method of claim 20, wherein the scale information indicates a display scale of the second video stream relative to the first video stream.   The method of claim 21, wherein the scale information indicates one of: no scale, half scale, quarter scale, half scale, half scale, and full scale.   The step of playing back the first video stream and the second video stream may include displaying the second video stream at a position indicated by the position information and a size indicated by the scale information. The method of claim 20, wherein one video stream and the second video stream are played.   The step of playing back the first video stream and the second video stream may include the first video stream and the second video stream so that the second video stream is displayed at a position indicated by the position information. The method according to claim 7, wherein reproduction is performed.   The method of claim 7, wherein in the reproducing of the first video stream and the second video stream, the second video stream is decoded using a decoder different from a decoder that decodes the first video stream. the method of. A method for managing playback of at least one picture-in-picture presentation path, comprising:
Including at least picture-in-picture presentation including configuration information including scale information representing a size of displaying a second video stream representing a picture-in-picture presentation path with respect to a first presentation path represented by the first video stream Replaying management information to manage path replay;
Playing back the first video stream and the second video stream based on the management information.   The method of claim 26, wherein the scale information indicates a display scale of the second video stream relative to the first video stream.   27. The method of claim 26, wherein the scale information indicates no scale, one half scale, one quarter scale, one half scale, and full scale. An apparatus for managing playback of at least one picture-in-picture presentation path,
A driver configured to drive a player and reproduce data from a recording medium;
At least a picture-in-picture presentation path including configuration information including position information indicating a position to display a second video stream representing a picture-in-picture presentation path related to a first presentation path represented by the first video stream A controller configured to control the driver to reproduce management information for managing reproduction of the first video stream and the second video by controlling the driver based on the management information And a controller configured to play the stream.   The position information includes vertical position information indicating a vertical position and horizontal position information indicating a horizontal position, in which an uppermost left pixel of the second video stream is displayed on a display of the first video stream. 30. The apparatus of claim 29.   The apparatus of claim 30, wherein the configuration information includes scale information indicating a size of displaying the second video stream. A first decoder configured to decode the first video stream;
30. The apparatus of claim 29, further comprising: a second decoder configured to decode the second video stream. An apparatus for managing playback of at least one picture-in-picture presentation path,
A driver configured to drive a player and reproduce data from a recording medium;
Including at least picture-in-picture presentation including configuration information including scale information indicating a size for displaying a second video stream representing a picture-in-picture presentation path related to a first presentation path represented by the first video stream A controller configured to control the driver to reproduce management information for managing path reproduction, the controller controlling the driver based on the management information to control the first video stream and the second A controller configured to play a video stream.   The apparatus of claim 33, wherein the scale information indicates a display scale of the second video stream with respect to the first video stream.   35. The apparatus of claim 34, wherein the scale information indicates no scale, one half scale, one quarter scale, one half scale, and full scale. A method of recording a data structure for managing playback of at least one picture-in-picture presentation path, comprising:
Recording a first video stream representing a first presentation path and a second video stream representing a picture-in-picture presentation path relating to the first presentation path in a data area of a recording medium;
Recording management information for managing reproduction of the picture-in-picture presentation path in a management area of the recording medium, including configuration information including position information indicating a position where the second video stream is displayed. A method characterized by.   The position information includes vertical position information indicating a vertical position and horizontal position information indicating a horizontal position, in which an uppermost left pixel of the second video stream is displayed on a display of the first video stream. The method of claim 36.   The method of claim 37, wherein the configuration information includes scale information indicating a size of displaying the second video stream.   Recording the first video stream and the second video stream includes separating the first video stream and the second video stream from a data stream reproduced from the recording medium and decoding the data stream by a separate decoder. The method of claim 36, wherein the first and second video streams are recorded. An apparatus for recording a data structure for managing reproduction of at least one picture-in-picture presentation path,
A driver configured to drive the recorder and record data on the recording medium;
Control for controlling the driver to record a first video stream representing a first presentation path and a second video stream representing a picture-in-picture presentation path related to the first presentation path in a data area of the recording medium. Management information for managing playback of the picture-in-picture presentation path is recorded in a management area of the recording medium, including configuration information including position information indicating a position where the second video stream is displayed. And a controller configured as described above.   The position information includes vertical position information indicating a vertical position and horizontal position information indicating a horizontal position, in which an uppermost left pixel of the second video stream is displayed on a display of the first video stream. 42. The apparatus of claim 40.   The apparatus of claim 41, wherein the configuration information includes scale information indicating a size with which the second video stream is displayed.   The controller controls the driver so that the first video stream and the second video stream are separated from a data stream reproduced from the recording medium and decoded by a separate decoder. 41. The apparatus of claim 40, wherein the apparatus is configured to record the second video stream.   30. The apparatus of claim 29, further comprising at least one filter configured to separate at least one of the first video stream and the second video stream from data reproduced from the recording medium. Equipment.

Images