JP2008282475A - Information storage medium, its manufacturing apparatus and information reproduction method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an information storage medium to/from which write-in and reproduction of a plurality of contents can be performed, and its manufacturing apparatus. <P>SOLUTION: The information storage medium is provided with: a first contents file arranged under a first directory and corresponding to a first contents; a first play list file for controlling reproduction of the first contents; a second contents file arranged under a second directory and corresponding to a second contents being different from the first contents; a second play list file for controlling reproduction of the second contents; and a contents management file arranged under the prescribed directory and managing selection of the first and the second contents. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an information storage medium for storing a plurality of contents and a manufacturing apparatus thereof.

An optical disc (information storage medium) on which contents such as movies and music are written and a disc playback device (information playback device) for playing back the optical disc are used (for example, see Patent Document 1).
As for optical discs, a rapid transition from the DVD standard to a larger capacity HD DVD standard has progressed, and many HD DVD-Video contents have been produced and sold.
JP2005-259188

By the way, as a result of an increase in the capacity of the optical disk, it has become easier to write a plurality of contents on the optical disk in terms of capacity.
However, the HD DVD standard does not consider storing and reproducing a plurality of contents on one optical disk.
In view of the above, an object of the present invention is to provide an information storage medium capable of writing and reproducing a plurality of contents, and an apparatus for manufacturing the same.

  An information storage medium according to an aspect of the present invention includes a first content file corresponding to the first content, which is arranged under the first directory, and a first content file for controlling the reproduction of the first content. One playlist file, a second content file arranged under the second directory and corresponding to a second content different from the first content, and the reproduction of the second content The second playlist file and a content management file arranged under a predetermined directory for managing the selection of the first and second contents.

  According to the present invention, it is possible to provide an information storage medium capable of writing and reproducing a plurality of contents, and an apparatus for manufacturing the same.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a block diagram showing an information reproduction system 100 according to an embodiment of the present invention.
The information reproduction system 100 includes a disk D, a persistent storage ST, an information reproduction device 110, and a video / audio output device 120, and is connected to a network NW.
The information reproducing apparatus 110 includes a data access manager 111, a navigation manager 112, a data cache 113, a presentation engine 114, an AV renderer 115, an input unit 116, and a setting information storage unit 117.
The video / audio output device 120 is a display device (for example, a liquid crystal display device or a plasma display) or an audio output device (for example, a speaker or headphones).

  The data access manager 111 controls data access to the disk D, persistent storage ST, and network NW. That is, the data access manager 111 can read data from the disk D, read data from the persistent storage ST (nonvolatile memory for storing information), and download data from the network NW.

  The data access manager 111 inputs data (for example, data according to the HD DVD-Video format) from these data sources (disk D, persistent storage ST, network NW), navigation manager 112, data cache 113, presentation The output is distributed to the engine 114. A playback control file or the like described in XML (eXtended Markup Language) or ECMA (European Computer Manufacturers Association) script (playlist, manifest, markup, script, etc. described later) is sent from the data access manager 111 to the navigation manager 112. (Directly or indirectly via data cache 113).

The navigation manager 112 includes a content type determination unit 131, a content selection unit 132, and a content playback unit 133, and controls content playback.
The content type determination unit 131 determines the type of content such as the disc D. The content selection unit 132 can select a plurality of contents in the disc D using a content selection menu. Details of content type determination and content selection will be described later.
The content playback unit 133 controls playback of the selected content, interprets the playback control file sent from the data access manager 111, generates a playback control command, and outputs it to the presentation engine 114. The content playback unit 133 receives an input (user operation) from the input unit 116 (keyboard, remote controller, etc.), generates a playback control command, and outputs the playback control command to the presentation engine 114.

The data cache 113 is a memory for temporarily storing data used for reproduction.
The presentation engine 114 determines the output contents of video and audio from the playback control command and data used for playback (such as a primary video set and a secondary video set described later), and converts them into information that can be used for playback. The reproduction data stored in the disk D or the like is multiplexed with video and audio. The presentation engine 114 selects data such as video and audio necessary for reproduction, and restores the multiplexed data (demax). The demultiplexed data is encoded with various codecs (compression methods). For this reason, the presentation engine 114 decodes (decodes) the demultiplexed data. The presentation engine 114 generates playback data and the like based on the decoded data and the playback control command from the navigation manager 112, and sequentially outputs them to the AV renderer 115.

The AV renderer 115 performs video superposition and audio mixing, and outputs them to the video / audio output device 120.
The input unit 116 is input means such as a keyboard and a remote controller.
The setting information storage unit 117 stores setting information related to reproduction and the like. The setting information includes reference directory information described later. The disk D is mounted according to the information of the reference directory.
The video / audio output device 120 outputs video and audio in accordance with a signal from the AV renderer 115.

The disk D is, for example, a writable HD DVD standard optical disk.
The HD DVD-Video standard defines two types of content called standard content and advanced content.

  Standard content is positioned as an extended version of the DVD standard, and the data structure is close to the DVD standard. For this reason, standard content is likely to be accepted by studios that produced DVDs. However, standard content has higher video and audio quality and usable navigation commands (instruction groups used in title jumps and menus) than DVD.

  Advanced content has a data structure different from the DVD standard. In advanced content, in addition to improving the quality of video and audio like standard content, playback control information can be expressed in programming languages such as XML and ECMA script, like a homepage on the Internet. In addition, in the advanced content of HD DVD-Video, content from the persistent storage ST and the network NW can be reproduced in addition to the disc D.

  As described above, two types of contents are defined in HD DVD-Video, and the data structure and the like are different from each other. The disc D of the present embodiment targets advanced content among these two types of content.

A. Outline of Data Structure of Disc D (1) Content Data Structure Disc D has a data structure for facilitating storage of a plurality of contents.
2A and 2B are diagrams showing examples of the data structure of the disc D that can store a plurality of contents.

  As shown in FIGS. 2A and 2B, an HVDVD_TS (HVDVD_TS01, HVDVD_TS02) directory area and an ADV_OBJ (ADV_OBJ01, ADV_OBJ02) directory area are arranged under the root directory of the advanced content. The HVDVD_TS directory area stores the primary video set. The ADV_OBJ directory area stores playlists, DISCID.DAT, advanced applications, advanced subtitles, and secondary video sets as data.

  As shown in FIGS. 2A and 2B, a directory for advanced content can be arranged under the ADV_OBJ directory. DISCID.DAT is placed directly under the ADV_OBJ directory. In addition, in the case of content that needs to read a playlist from the disc, it is preferable that at least one playlist file exists immediately under ADV_OBJ.

  In the example of FIG. 2A, the HVDVD_TS directory and ADV_OBJ directory for each content are placed directly under the root directory. In this case, it is preferable that the content of each HVDVD_TS and ADV_OBJ can be classified by, for example, a directory name. In this example, contents are classified by directory names such as HVDVD_TS01 and HVDVD_TS02.

  In the example of FIG. 2B, a directory for each content (such as HDCONT01 and HDCONT02) is placed directly under the root directory, and the contents of each content (such as HVDVD_TS and ADV_OBJ) are stored therein.

  In the advanced content of the HD DVD-Video standard, the HVDVD_TS directory and the ADV_OBJ directory are stored immediately under the root directory, and playback data, playback control files, and the like are stored therein.

  The example of FIG. 2A has an advantage that the depth of the directory structure from the root directory is not different from HD DVD-Video (conventional HD DVD-Video standard) in the case of one disc and one content. In the example of FIG. 2B, there is an advantage that the data structure below each content directory is not different from the conventional HD DVD-Video standard.

  As shown in FIGS. 2A and 2B, the following content data is stored in the disc D.

Play list: A playback control file written in XML language.
DISCID.DAT: Setting file that describes the ID and provider ID of disk D

  Primary video set: Consists of primary audio video including data such as video and audio used for playback. The primary audio video is composed of main video (main video), main audio (main audio), sub video (sub video), sub audio (sub audio), sub picture (subtitle), and the like.

  Secondary video set: Consists of data such as video and audio intended to replace the primary video set. There are three types of secondary video sets: substitute audio video (replace main video and main audio), substitute audio (replace main audio), and secondary audio video (replace sub video and sub audio).

  -Advanced application: Data for an application for placing menu buttons on the screen or performing trick play. Manifest (XML file that defines what data is used in the application), markup (XML file that defines button layout, timing processing, etc.), script (playback control file written in ECMA script), image file, It consists of effect audio (sound file for sound effects), font (open type font used when displaying a message on the screen, etc.) and the like.

  • Advanced subtitle: Subtitles that can be described as an application in XML, separately from subtitles (sub-pictures) that are tailored to the video stream. An advanced subtitle markup is used in which the markup for the advanced application is specialized for subtitles.

(2) Data structure of content selection menu data When a plurality of contents are stored in one disc D, it is necessary to select the content to be reproduced. Here, a method of displaying the content selection menu is considered. That is, when the disc D is inserted and playback is started, the content selection menu is displayed. When the user selects one content from the contents listed in the content selection menu, the reproduction of the content is started.

  Here, a file (content management file) that contains information (content management information) such as image material for thumbnail display of each content used in the content selection menu, the number of contents stored on the disc, and the name of each content The data structure of is described. These are collectively called content selection menu data.

  3A and 3B are diagrams showing examples of the data structure of the disc D storing the content selection menu data. In the example of FIG. 3A, content selection menu data is stored directly under the root directory. In the example of FIG. 3B, a directory for content selection menu is placed directly under the root directory, and content selection menu data is stored therein.

  As a modification, a data structure other than those shown in FIGS. 3A and 3B can be adopted. For example, only the content management file may be placed under another directory. A thumbnail image or the like may be stored directly under the directory for content selection menu. When storing reproduction data, a reproduction control file, etc. for each content as in the example of FIG. 3B, content selection menu data can be placed in that directory.

  Compared to these modified examples, the examples of FIGS. 3A and 3B can easily adopt the HD DVD-Video standard as the data structure of each content. It should be noted that any one of FIGS. 2A and 2B and any of FIGS. 3A and 3B can be appropriately combined as the data structure of the content and content selection menu data (four combinations).

4A and 4B are diagrams showing examples of the contents and format of the content management information.
In the example of FIG. 4A, the number of contents stored in the disc D is described, and ID, title, HVDVD_TS directory URI, ADV_OBJ directory URI, and thumbnail display image URI are described for each content. This example corresponds to the data structure example of FIG. 3A. A URI (Uniform Resource Identifier) is a type of location information indicating the location where a directory, file, etc. exists.

  In the example of FIG. 4B, the number of contents stored in the disk D is described, and the ID, title, content data directory URI, and thumbnail display image URI are described for each content. This example corresponds to the data structure example of FIG. 3B.

  The format may not be the same as this example. It is only necessary that the information reproducing apparatus 110 can describe information necessary for displaying the content selection menu or reproducing the selected content.

  As described above, the disk D has a data structure in which FIG. 3A or 3B and FIG. 4A or 4B are combined. The disk D having such a data structure can be manufactured using a normal HD-DVD manufacturing apparatus.

B. Details of Data on Disk D Details of data stored on the disk D will be described below.
(1) DISCID.DAT (Figure 5)
FIG. 5 shows an example of the data structure of DISCID.DAT. DISCID.DAT is a setting file for setting the content ID and where the playlist is read from.

・ CONFIG_ID: ID of the configuration file. It is described as “HDDVD-V_CONF” in ISO8859-1 character code. 12 bytes.
-DISC_ID: ID of the disk described in binary representation. When not using the network, fill it with “1b”. 16 bytes.
-PROVIDER_ID: Provider ID described in binary representation. If the provider ID directory in the persistent storage is not used, fill it with “1b”. 16 bytes.
-CONTENT_ID: ID of the content described in binary representation. If the provider ID directory in the persistent storage is not used, fill it with “1b”. 16 bytes.
SEARCH_FLG: A flag indicating whether or not to search in the persistent storage when searching for an initial playlist in the startup process. Enter “0b” if not searching, and “1b” if searching. 1 byte.
• reserved: 67 bytes are left as a reserved area.

(2) Playlist (FIGS. 6 to 13)
FIG. 6 is a diagram showing the contents of control by a play list.
The playlist is a playback control file for describing information related to initial system settings, synchronization information between objects used for playback, and the like. The playlist is described in XML language, and includes playback control information such as when to play back the primary video set, secondary video set, advanced application, advanced subtitle, and the like.

FIG. 7 is a diagram showing an outline of a playlist.
The sentence <? Xml ...?> Described in the first line of FIG. 7 is a description called an XML declaration. This declaration indicates that "This document is written in the XML language."

  In XML, each element is held in a tree shape. The root element of the playlist (the root element of the tree) is a playlist element. The playlist element is described as a portion surrounded by <Playlist ...> and </ Playlist>. In this example, <Configuration> (structure information), <MediaAttributeList> (media attribute information), and <TitleSet> (title information) are described as child elements of the playlist element. In the structure information, information related to system settings is described. In the media attribute information, information relating to a video or audio codec (compression method) used for reproduction is described. The title information includes object mapping information such as which video is to be played at which timing.

8 to 13 are diagrams illustrating an example of the data structure of the title information.
The title information is configured by describing one or more <Title> elements as child elements of the <TitleSet> element. In addition to the <Title> element, playlist application element information can also be described as a child element of the <TitleSet> element.

  Information related to each title (referred to as title element information) is described in the <Title> element. The title element information includes object mapping information, resource information, playback sequence information, track navigation information, schedule control information, etc. (FIG. 9). The object mapping information is information for assigning objects in title reproduction. The resource information is resource information such as an image used in the title. Playback sequence information is information for dividing a title into units called chapters. The track navigation information is information for assigning video or audio tracks. The schedule control information is information for making a pause or generating an event at a certain timing.

  Object mapping information, which is a kind of title element information, describes information related to playback start / end times of objects such as video, audio, advanced application, and advanced subtitle, and information on files used for playback (FIG. 10). ).

  Elements that can be described as object mapping information include <PrimaryAudioVideoClip> element, <SubstituteAudioVideoClip> element, <SubstituteAudioClip> element, <SecondaryAudioVideoClip> element, <AdvancedSubtitleSegment> element, <ApplicationSegment> element, and the like (FIGS. 10 to 12). .

  In the <PrimaryAudioVideoClip> element, information such as a reproduction start / end time of the primary audio video and a URI indicating a location where the object is stored as a file is described. In the <SubstituteAudioVideoClip> element, information such as a start / end time of playback of the substitute audio video and a URI indicating a location where the object is stored as a file is described. In the <SubstituteAudioClip> element, information such as a start / end time of the substitute audio and a URI indicating a location where the object is stored as a file are described. In the <SecondaryAudioVideoClip> element, information such as a reproduction start / end time of the secondary audio video and a URI indicating a location where the object is stored as a file is described. In the <AdvancedSubtitleSegment> element, information such as the display start / end time of the advanced subtitle and the URI indicating the manifest file of the advanced subtitle are described. In the <ApplicationSegment> element, information such as the execution start / end time of the advanced application and the URI indicating the manifest file of the advanced application are described.

  An advanced application described as object mapping information of title element information is called a title application. The title application is valid only during playback of the title (strictly speaking, only during the playback start / end time specified by the <ApplicationSegment> element during playback of the title). On the other hand, an advanced application that is effective during the reproduction of the playlist is called a playlist application. Information about the playlist application can be described in the form of a <PlaylistApplication> element as a child element of the <TitleSet> element (FIG. 13).

(3) Manifest (Figure 14)
In the <ApplicationSegment> element of the playlist, specify the manifest file used in the application. The manifest is initialization information for the advanced application. The information reproducing apparatus 110 activates the advanced application according to the information described in the manifest. In the manifest, information on the markup that is executed first, information on the script (s) executed in the application start process, and the like are described in the XML language.

  FIG. 14 is a diagram illustrating an example of a data structure of a manifest. The root element of the manifest is an <Application> element. In a child element of the <Application> element, a region element <Region>, a script element <Script>, a markup element <Markup>, and a resource element <Resource> can be described. Multiple <Script> and <Resource> can be described, one <Region> is required, and <Markup> must be 0 or 1.

  The <Region> element specifies a region on the application's canvas. In the <Script> element, specify the script file (details will be described later) used in the application. In the <Markup> element, specify the markup file to be used in the application. In the <Resource> element, all resources used in the application (including the above script file and markup file in addition to image data and font data) are specified.

(4) Markup (Figure 15)
Markup is a playback control file written in XML language. Markup is used to place buttons and display messages on the screen. A plurality of markups cannot be reproduced simultaneously for one advanced application.

  The root element of the markup is <root>, and timing information, styling information, content information, etc. are described in the child (FIG. 15). Content information is information about buttons and objects used in the application, such as <button> element, <object> element, <input> element, and the like. Timing information is information related to the behavior when the button is pressed, such as <animate> element, <event> element, and <set> element. Styling information is information used to specify the button layout and font display size, and is realized by setting various attributes (style: fontSize, style: backgroundColor, etc.) of the <style> element Can be made.

(5) Script (Fig. 16)
A script is a playback control file described by an ECMA script. In HD DVD-Video, properties (values that can be referenced by name: example Player.countryCode property contains the country code of the information playback device 110) and functions (processing: example Player.playlist.pause ( (In addition, playback is paused when a function is called), and HD DVD-Video specific properties and functions can be used. A set of properties and functions that can be used is called an API.

There are the following 12 APIs specific to HD DVD-Video.
-Application API: Defines objects that can be used in applications-System API: Defines string arrays and timers that can be used in HD DVD-Video systems-File IO API: Defines input / output functions to persistent storage, etc. Diagnostics API: stipulates objects used mainly for debugging during development of the information playback device 110. Controller API: stipulates things related to remote control keys and mouse cursors, etc. Drawing API: When drawing graphics on the screen・ Network API: Defines functions for downloading playback data from the Internet ・ Data Cache API: Defines properties for acquiring the size of data cache 113 (temporary storage memory)・ Player API: Playback system such as fast forward, title jump, video size conversion Stipulates functions, etc. Persistent Storage API: stipulates properties for acquiring information related to persistent storage, etc. XML API: stipulates functions, etc. for manipulating information described in XML language such as markup API: Defines functions to get / set elements and attributes described in markup

  By using these APIs, various things such as saving one frame of the video being played back to persistent storage as a still image, drawing a picture on the screen, changing the message text displayed in markup, etc. Can be realized.

  FIG. 16 is a diagram illustrating an example of a script. In this example, when an event called captureEvent is issued (events can be described in a playlist or set with markup to be issued when the button is pressed), playback is paused. The The video image displayed at that time is captured as a still image and stored in the data cache 113. Thereafter, the size of the still image is changed to 1/2 and displayed on the screen of the video / audio output device 120 (the area defined as CaptureDisplayWindow by the markup).

(Operation of information reproduction system 100)
In the information reproducing system 100, a plurality of HD DVD-Video contents can be stored in the disc D, and one can be selected and reproduced. When the disc D is played back by the information playback device 110, a menu for selecting content (content selection menu) is displayed on the video / audio output device 120, and the user can select the content to be played back by selecting the content to be played back. Playback starts.

When the disk D is inserted, processing is executed in the following order of A, B, and C.
A. Content selection (Fig. 17)
For the inserted disc D, the content is selected using the content selection unit 132.
FIG. 17 is a flowchart showing an example of a content selection procedure.

(1) Reading content management information (steps S11 and S12)
It is determined whether the content management information is stored in a predetermined storage location such as the disk D (step S11). If the content management information is found, the content management information is read (step S12). If the content management information is not found, it is determined that a single content is stored in the disc D, and the reproduction of the content is started (step S17).

(2) Content selection (steps S13 to S15)
A thumbnail image described in the content management information is read (step S13), and a content selection menu is displayed on the video / audio output device 120 using the title name and thumbnail image described in the content management information (step S13). Step S14). Using the content selection menu, one content to be reproduced by the user is selected (step S15).
FIG. 18 is a diagram illustrating an example of a content selection menu. Thumbnail images of contents 1 to 3 and buttons for selection are displayed on the screen. The content is selected when the user selects and accesses a button with the input unit 116.

(4) Mount on the reference directory (step S16)
Mount to the base directory. This mount depends on the data structure of the content.
In the case of the data structure of FIG. 2A, file: /// dvddisc / HVDVD_TS and file: /// dvddisc / ADV_OBJ of the URI used in the content are replaced with the HVDVD_TS directory (such as HVDVD_TS01) and ADV_OBJ of the content selected by the user. Mount to a directory (such as ADV_OBJ01). For example, HVDVD_TS01 and ADV_OBJ01 are stored in the setting information storage unit 117 as reference directories for the HVDVD_TS directory and the ADV_OBJ directory. Then, based on the reference directory stored in the setting information storage unit 117, data is read from the disk D and reproduced.

In the case of the data structure of FIG. 2B Mount the file: /// dvddisc / of the URI used in the content on the directory (such as HDCONT01) of the content selected by the user. For example, HDCONT01 is stored in the setting information storage unit 117 as a reference directory for the HDCONT directory. Then, based on the reference directory stored in the setting information storage unit 117, data is read from the disk D and reproduced (that is, the root directory is HDCONT01 thereafter).

  After the above selection of content, content type determination and content reproduction are performed.

B. Content type discrimination (FIG. 19)
HD DVD-Video defines two types of content: standard content and advanced content. For this reason, the content type determination unit 131 of the information playback apparatus 110 determines which content is the target content as a start process during content playback.

FIG. 19 is a flowchart showing an example of a procedure for determining target content.
(1) When the disk D is inserted, it is confirmed whether or not a DISCID.DAT file exists (step S21). If the DISCID.DAT file exists, it is determined that the target content is advanced content (step S22).

(2) If DISCID.DAT does not exist, it is confirmed whether VMG_ID (a kind of standard content ID information) is valid (step S23). If VMG_ID is valid, it is determined as standard content (step S24). If VMG_ID is not valid, it is determined that the content is unknown (that is neither advanced content nor standard content of HD DVD) (step S25).
In the present embodiment, since the advanced content of HD DVD is targeted, hereinafter, it is assumed that the content in the disc D is the advanced content.

C. Reproduction process (FIG. 20)
FIG. 20 is a flowchart showing an example of a content reproduction procedure.
(1) A DISCID.DAT file is read (step S31).
(2) It is determined whether a display is defined (step S32). The search target file is selected according to whether the display is defined. The definition of the display means that the display unit of the video / audio output device 120 is connected to the information reproducing device 110 and is in a usable state.

(3) If a display is defined, VPLST $$$. XPL is searched and an initial playlist is determined (steps S41 to S45). “$$$” means a three-digit number.
It is determined whether SEARCH_FLG in the DISCID.DAT file is 1 (step S41). Depending on whether SEARCH_FLG is 1, the process proceeds to steps S43 and S42.

Search for a playlist file (VPLST $$$. XPL) under a specific directory in all persistent storages ST (step S42).
Search for a playlist file (VPLST $$$. XPL) directly under the ADV_OBJ directory in the disc (step S43).
It is determined whether one or more VPLST $$$. XPL has been found (step S44). When one or more VPLST $$$. XPL is found, an initial playlist is determined (step S45). That is, playback starts with the largest playlist in VPLST $$$. XPL as the initial playlist.

(4) If the display is not defined, APLST $$$. XPL is searched and an initial playlist is determined (steps S51 to S55). In these steps, APLST $$$. XPL is used instead of VPLST $$$. XPL in steps S41 to S45.
If APLST $$$. XPL is not found, for example, playback is stopped (step S56). The behavior at this time is determined by the setting information in the setting information storage unit 117.

(Other embodiments)
Embodiments of the present invention are not limited to the above-described embodiments, and can be expanded and modified. The expanded and modified embodiments are also included in the technical scope of the present invention.

It is a block diagram showing the information reproduction system concerning one embodiment of the present invention. It is a figure which shows the example of the data structure of a disc. It is a figure which shows the example of the data structure of a disc. It is a figure which shows the example of the data structure of the disc which stored the data for content selection menus. It is a figure which shows the example of the data structure of the disc which stored the data for content selection menus. It is a figure which shows an example of the content and format of content management information. It is a figure which shows an example of the content and format of content management information. It is a figure which shows the example of the data structure of DISCID.DAT. It is a figure showing the control state by a play list. It is a figure which shows the outline | summary of a play list. It is a figure which shows an example of the data structure of title information. It is a figure which shows an example of the data structure of title information. It is a figure which shows an example of the data structure of title information. It is a figure which shows an example of the data structure of title information. It is a figure which shows an example of the data structure of title information. It is a figure which shows an example of the data structure of title information. It is a figure which shows an example of the data structure of a manifest. It is a figure which shows an example of the data structure of markup. It is a figure which shows an example of the data structure of a scripter. It is a flowchart showing an example of a content selection procedure. It is a figure which shows an example of a content selection menu. It is a figure which shows an example of the discrimination | determination procedure of object content. It is a figure which shows an example of the reproduction | regeneration procedure of a content.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 100 ... Information reproduction system, 110 ... Information reproduction apparatus, 111 ... Data access manager, 112 ... Navigation manager, 113 ... Data cache, 114 ... Presentation engine, 115 ... AV renderer, 116 ... Input part, 117 ... Setting information storage part, DESCRIPTION OF SYMBOLS 120 ... Video / audio output device 131 ... Content type determination part, 132 ... Content selection part, 133 ... Content reproduction part

Claims (6)

A first content file corresponding to the first content and a first playlist file for controlling the reproduction of the first content, which are arranged under the first directory;
A second content file corresponding to a second content different from the first content and a second playlist file for controlling reproduction of the second content, which are arranged under a second directory When,
A content management file disposed under a predetermined directory for managing selection of the first and second contents;
An information storage medium comprising: 2. The information storage medium according to claim 1, wherein the recording medium corresponds to an HD-DVD standard. The information storage medium according to claim 1, wherein the first and second directories are the same directory. 4. The apparatus according to claim 1, further comprising first and second image files arranged under the predetermined directory and respectively representing the contents of the first and second contents. An information storage medium described in 1. A third content file corresponding to a third content different from the first and second content, which is arranged under the third directory, and a third content for controlling the reproduction of the third content A playlist file, and
5. The information storage medium according to claim 1, wherein the content management file is for managing selection of the first to third contents.   A manufacturing apparatus for manufacturing the information storage medium according to claim 1.

Images