RU2312411C2 - Carrier for storage of information which stores a set of headers, device and method for reproduction - Google Patents

Abstract

FIELD: information storage carrier is claimed, where a set of headers is recorded, and device and method for reproduction of the carrier.

SUBSTANCE: information storage carrier contains a set of headers, which are reproduced as moving image, and a set of attribute information blocks, which correspond to headers and point out whether the user may control the header subject to reproduction.

EFFECT: realization of efficient navigation, due to which headers may be reproduced as was intended by information storage carrier manufacturer.

4 cl, 11 dwg

Description

Technical field

The present invention relates to the reproduction of audio / video (AV) data, in particular to an information storage medium on which AV data and data providing a navigation function, such as a search function, are recorded, as well as a device and method for reproducing data.

State of the art

The titles of the video material consist of AV data that is recorded on a digital video disc (DVD). In addition, navigation data that allows the user to select superimposed dialogs or to search for scenes is also recorded on a digital video disc that reproduces the titles of the video material. However, there is a need for more user interaction and more efficient reproduction of AV data.

Disclosure of invention

The present invention provides a storage medium with a data structure in which audio / video (AV) data can be efficiently reproduced and a navigation function can be efficiently performed, as well as an apparatus and method for reproducing titles as a moving image.

The present invention also provides a storage medium with a data structure by which various applications can be provided, as well as a reproducing apparatus and method for providing various applications.

According to one aspect of the present invention, there is provided an information storage medium comprising a plurality of titles that are reproduced as moving images and a plurality of attribute information blocks that correspond to titles and indicate whether the user can control the title to be reproduced.

Titles may be recorded with main mode data, which includes audio / video data and navigation data for reproducing audio / video data.

Each of the titles may contain at least one navigation object, and at least one navigation object may contain a navigation command that provides a command for the playlist corresponding to the title.

The title may include main mode data, which includes audio / video data and navigation data reproducing audio / video data; and full mode data, which includes program data that allows for interaction with the user, and browsing data, which allows browsing on the Internet, or the title may include a navigation object and at least one viewing object that allows to browse web-pages on the Internet, and a program object that provides the ability to interact with the user.

Additional aspects and / or advantages of the invention are set forth below in the description, or will be apparent from the description, or may be learned by practice of the invention.

In accordance with another aspect of the invention, there is provided an information storage medium including a plurality of titles that are reproduced as moving images; and title access type information that matches the titles and indicates whether it is possible to search for the corresponding title through a user operation.

Title access type information may further include title type display type information indicating whether the title number is displayed for the corresponding title.

In accordance with another aspect of the present invention, a reproducing apparatus includes a reader that reads a plurality of titles to be reproduced as moving images and a plurality of title information blocks that correspond to titles; a buffer that buffers data read by the reader; and a decoder that interprets the title information to indicate a title entry point and reproduces the title, wherein the decoder interprets the attribute information contained in the title information to indicate whether the user can control the title to be reproduced.

The decoder can play titles that are recorded with main mode data that contain audio / video data and navigation data reproducing audio / video data, execute at least one navigation object indicated by the title entry point, or execute a navigation object that includes itself a navigation command that provides a command for playing a playlist corresponding to the title.

The decoder can reproduce the title, which includes the main mode data that contains audio / video data and navigation data reproducing the audio / video data, and full mode data that includes program data that allows user interaction, and viewing data, which provide the ability to view on the Internet, execute at least one navigation object corresponding to the title, a viewing object that allows you to view web-page Itz, and a program object that provides the ability to interact with the user, or execute a navigation object, implemented as a program of commands, which provides a command for playing a playlist, and the viewing object is implemented as a file that is recorded in a markup language and scripting language, and software the object is implemented as a specific program file.

The decoder may determine that a title search may be performed by a user operation if the access type information as attribute information represents the title as a “normal title”, and that a title search cannot be performed by the user operation if the access type information represents the title as a “hidden title”. If the access type information represents the title as a “hidden title”, then the decoder can display the title number for that title when the title is reproduced in accordance with the information contained in the attribute information that indicates whether the title number is displayed for that title.

In accordance with another aspect of the present invention, there is provided a reproducing method comprising reading a plurality of titles that are reproduced as moving images and a plurality of title information blocks that correspond to titles; and an interpretation of the attribute information included in the title information, which indicates whether the corresponding title can be searched for by a user operation, the interpretation of the title information to indicate the entry point of the title, and reproducing the title.

Interpretation of information and reproduction of titles may include reproducing titles that are recorded with data of the main mode, which contain audio / video data and navigation data reproducing audio / video data; executing at least one navigation object that is indicated by a title entry point, or executing a navigation object that includes a navigation command that provides a command for reproducing a playlist corresponding to that title.

Interpretation of information and reproduction of titles may include reproducing a title, which includes main mode data that contains audio / video data and navigation data for reproducing audio / video data; and full-mode data, which includes program data that allows for interaction with the user, and viewing data, which enables viewing on the Internet, the execution of at least one navigation object corresponding to the title, a viewing object that allows viewing web pages, and a software object that provides the ability to interact with the user, or the execution of a navigation object, implemented as a program of commands, which nd provides a command to reproduce a playlist, the view object is implemented as a file, which is written in a markup language and the language of the script execution, and program object is implemented as a specific program file.

Interpretation of information and reproduction of the title may include determining that a title may be searched for by the user operation if the access type information as title information represents the title as a “normal title” and that the title search cannot be performed by the user operation if the access type information represents title as “hidden title”. If the access type information represents the title as a “hidden title,” then interpreting the information and reproducing the title may include displaying the title number for that title when the title is reproduced in accordance with information contained in the attribute information that indicates whether the title number is displayed for this title.

Brief Description of the Drawings

The above and other aspects and advantages of the invention are explained in the following description of embodiments of the invention, illustrated by the drawings, which represent the following:

1A, 1B and 1C are diagrams illustrating various types of data recorded on a disc 100 in accordance with an embodiment of the present invention.

2A is a diagram illustrating the relationships between the playback modes of the disc 100 of FIG. 1A or 1B.

2B is a diagram illustrating the relationships between the playback modes of the disc 100 of FIG. 1C.

Fig. 3A is a block diagram of a reproducing apparatus that supports both the main mode and the full mode in accordance with an embodiment of the present invention.

Fig. 3B is a detailed block diagram of a reproducing apparatus of Fig. 3A.

4A is a diagram for explaining a method for reproducing main mode data recorded on a disc 100 in accordance with FIG. 1A or 1B.

FIG. 4B is a diagram for explaining a method for reproducing the main mode data and the full mode data recorded on the disc 100 in accordance with FIG.

5A is a diagram illustrating a data structure of a title #i representing information of a title information block according to the present invention.

5B is a diagram illustrating a data structure of a hidden title #i representing information of a title information block according to the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION

Below is a detailed description of embodiments of the present invention, examples of which are shown in the drawings, where the same reference numerals denote the same elements in all the drawings. Embodiments are described below to explain the invention with reference to the drawings.

1A, 1B and 1C are diagrams illustrating various types of data recorded on the disc 100 in accordance with an embodiment of the present invention. Data having the same functions are denoted by the same reference numerals. However, although the data are denoted by the same reference position, they may differ from each other in content and structure.

1A, the main mode data 1 and index information 2 are stored on the disk 100. The main mode data 1 contains audio / video (AV) data, which includes a plurality of titles, and navigation data, which have a plurality of navigation commands for navigating AV data, like a regular digital video disc (DVD video disc). The structure and data of the main mode satisfy the requirements and standards for DVD video discs.

Index information 2 is a system data that allows the user to search for data 1 of the main mode or to reproduce data 1 of the main mode. Index information 2 denotes track reproduction of many titles, which are recorded in the data 1 of the main mode in accordance with the wishes of the manufacturer of the disc. More specifically, index information 2 contains launch information and title information. The start information indicates the initial AV title data to be reproduced when the disc 100 is inserted into the reproducing apparatus. The title information indicates the initial AV data of the plurality of titles to be reproduced and the attribute information accessed when reproducing the plurality of titles stored on the disc 100. The attribute information indicates whether the user can directly control the title to be reproduced. If the user cannot directly control the title to be reproduced, then the attribute information may further comprise information that indicates whether the title number is displayed for that title.

The mode in which the trigger information contained in the index information 2 is reproduced is called the trigger mode. The mode in which the main mode data 1 is reproduced is called the main mode or the moving picture mode, the main mode being performed in the same manner as in a conventional DVD video disc.

1B, the main mode data 1 and index information 2 are stored on the disk 100, similar to that described with reference to FIG. 1A. However, the index information 2 shown in FIG. 1B contains startup information, title information, and menu information.

The main mode data 1 contains AV data, which includes a plurality of titles, and navigation data, which have a plurality of navigation commands for navigating the AV data, like a conventional DVD video disc.

The trigger information contains an entry point that indicates the initial AV title data to be reproduced when the disc 100 is inserted into the reproducing apparatus. The title information contains an entry point that indicates the initial AV data of the plurality of titles to be reproduced, and attribute information that is accessed when playing the plurality of titles stored on the disc 100. The attribute information indicates whether the user can directly control the title to be played . If the user cannot directly control the title to be reproduced, then the attribute information may further comprise information that indicates whether the title number is displayed for that title. This information is called title number display type information.

The menu information displays a list of titles that can be selected and played back by the user from a plurality of titles that are recorded with AV data, so that the user can select one of the titles.

1C, the main mode data 1, the index information 2, and the full mode data 3 are stored on the disk 100. The full mode data 3 contains program data that enables user interaction, browsing data that allows browsing on the Internet. Java applications that provide various functions for interacting with users can be included in program data. The browsing data includes a markup document that is written in a markup language such as XML (Extensible Markup Language), the markup document containing script code or links to script code such as ECMA (European Association of Computer Manufacturers) code, a script file and a resource file including at least one of the image, graphics, and sound referenced by the markup document.

Full mode data 3 and main mode data 1 can exchange information using an application programming interface (API).

The titles contain data from various other modes. In other words, the titles contain at least a portion of the AV data that is included in the main mode data 1, and viewing data and program data that are included in the full mode data 3. For example, when a movie is displayed, a quiz related to a scene or a page from the Internet that provides the latest information about actors and actresses appearing in a scene may be displayed.

Index information 2 is a system data that provides the user the ability to conduct a more convenient search or playback of data 1 of the main mode and data 3 of the full mode. Index information 2 denotes playback tracks for a plurality of titles that contain the main mode data 1 and the full mode data 3 according to the wishes of the disc manufacturer. More specifically, the index information 2 comprises trigger information, title information and menu information, similar to the index information described with reference to FIG. The title information indicates the initial AV data of the plurality of titles to be reproduced and the attribute information accessed when reproducing the plurality of titles stored on the disc 100. The attribute information indicates whether the user can directly control the title to be reproduced. If the user cannot directly control the title to be reproduced, then the attribute information may further comprise information that indicates whether the title number is displayed for that title.

Similar to the modes described with reference to FIGS. 1A and 1B, the mode in which the start information and the menu information is reproduced is called the start mode, the mode in which the main mode data is reproduced is called the main mode, the mode in which the program data is reproduced is called a program mode, and a mode in which playback data is reproduced is called a viewing mode.

When the disc 100 is being played, the reproducing apparatus first reads the trigger information and searches for the data indicated by the trigger information to reproduce the data. If the start information provides commands for reproducing the main mode data, then the playback device is set to the main mode, if the start information provides commands for reproducing program data, the playback device is set to the program mode, and if the start information provides commands for reproducing the viewing data, Playback is set to view mode.

For example, the AV data shown in FIGS. 1A, 1B, and 1C is recorded as an AV stream file that is encoded using encoding according to the MPEG-II standard (Moving Picture Experts Group). A continuous AV stream file is called a clip stream file. The clip information file corresponds to each stream clip file. Playback control information related to the stream file of the clip, for example, display information that displays the play time and recording position, is stored in the clip information file. The clip information file that corresponds to the stream file of the clip is called a clip.

A playlist corresponds to at least a portion of one of the clips. In other words, a playlist is a playlist and corresponds to one clip, a part of one of the clips, a plurality of clips, or parts of a plurality of clips. The playlist can be played through the API as an object in the view mode and in program mode. The playlist is a playback unit described from the perspective of the playback device, while the title is the playback unit described from the perspective of the user. That is, the title corresponds to at least one playlist.

Navigation data is usually stored in the form of a binary data table. In one embodiment of the present invention, the navigation data includes a plurality of commands, including reproduction of a predetermined playlist and reproduction of another playlist during reproduction of the predefined playlist.

On figa presents a diagram illustrating the relationship between the playback modes of the disc according to figa or 1B. 2A, after the disc 100 (FIGS. 1A or 1B) is loaded into the reproducing apparatus, the reproducing apparatus reads the start information and determines the location from which the initial AV data should be reproduced in order to initiate title reproduction. For example, startup information may be implemented using a navigation command that provides instructions for reproducing a specific playlist to be reproduced. After the start mode is completed, this mode is replaced with the main mode.

On figv presents a diagram illustrating the relationship between the playback modes of the disc according to figs. 2A, after the disc 100 (FIG. 1C) is loaded into the reproducing apparatus, the reproducing apparatus reads the start information and determines the location from which the initial AV data should be reproduced in order to initiate title reproduction. For example, startup information may be implemented using a navigation command that provides instructions for reproducing a specific playlist to be reproduced. After the start mode is completed, this mode is replaced with the main mode.

Since some playback devices can reproduce only the main mode data, both the main mode start information and the full mode start information must be included in the start mode. If the start information of the main mode does not exist, then the playback device, which can reproduce only the data of the main mode, cannot work. In particular, in the case of a disc in which the start information provides only instructions for reproducing full mode data, it is not possible to start playback. For this reason, in the start mode, both the start information of the main mode and the start information of the full mode are provided, so that a reproducing apparatus that can reproduce only the main mode data can start playback using the start mode information of the main mode.

If the start-up information contains instructions to initially play back data 1 of the main mode, then the start-up mode is converted to the main mode. If the trigger information contains instructions to initially play back full mode data, then the trigger mode is converted to full mode.

FIG. 3A is a block diagram of a reproducing apparatus that supports both the main mode and the full mode in accordance with an embodiment of the present invention.

3A, the reproducing apparatus reproduces AV data in the main mode or in full mode using the main mode data 1 and / or the full mode data 3 stored on the disc 100. The reproducing apparatus comprises a reader 10, a buffer 20, and a decoder 30.

The reader 10 reads the necessary data from the disk 100. The buffer 20 buffers the data read by the reader 10. The decoder 30 decodes and outputs the data buffered by the buffer 20.

On figv presents a detailed block diagram of the playback device shown in figa.

3B, buffer 20 comprises a viewing data buffer 21 that buffers viewing data, a buffer 22 that buffers program data, a navigation data buffer 23 that buffers the navigation data, an AV data buffer 24 that buffers the AV data, and a buffer 25 index information that buffers index information.

The decoder 30 includes a viewing engine 31 that interprets the viewing data and executes the viewing instructions, a program engine 32 that interprets the program data and executes the program instructions, a navigation mechanism 33 that interprets the navigation data and executes the navigation commands, and a presentation mechanism 34 that decodes AV data. These mechanisms can pass information to each other through the API.

In particular, the decoder 30 includes an application manager 35 that interprets the index information. The application manager 35 selects and reproduces the title, which should be played first in accordance with the entry point indicated by the start information contained in the index information, and informs the mechanism according to the entry point corresponding to the conversion mode during playback. In addition, the application administrator 35 receives user input and passes the received input to a mechanism that corresponds to the user input mode.

FIG. 4A is a diagram explaining a method for reproducing the main mode data stored on the disc 100 in FIG. 1A or 1B.

4A, the title information comprises a plurality of information blocks, each of which denotes a navigation object. The block information is implemented as the title #i or as the hidden title #j. The title #i may be reproduced in response to a user operation. The hidden title #j cannot be played by the user. That is, the hidden title #j is played back only in the order predefined by the manufacturer of the disc 100. In other words, providing playback control allows searching for titles in response to a user-initiated operation.

When a particular title is selected by searching for a title on the disc 100 corresponding to that shown in FIG. 1A, or menu information is reproduced, and one of the titles shown in the menu is selected from the disc 100 corresponding to that shown in FIG. 1B, the title information indicates an entry point, where is the data to be initially executed or reproduced, i.e. a navigation object. The navigation object is implemented as an executable program of the navigation command. In other words, the navigation object is the top level of the playlist, which is a playlist, and includes a navigation command that initiates playback of a specific playlist.

For example, if the user selects the first title # 1, then the first title # 1 includes information that indicates the first navigation object # 1, while the first navigation object # 1 is executed. The first navigation object # 1 includes a navigation command. When the navigation command is executed, a predefined playlist is played. After the playlist is reproduced in accordance with the first navigation object # 1, the first navigation object # 1 indicates the first hidden title # 1, and the third navigation object # 3, indicated by the first hidden title # 1, is executed. In this case, the hidden title is not selected for playback directly by the user. The hidden title is reproduced only in the order predefined by the disc manufacturer. For example, a moving image that includes an official copyright notice, a moving image of the closing credits broadcast at the end of a movie, etc. may be a hidden title. Since these moving images are searched through a user operation, and they hardly require separate playback, these moving images are configured as hidden titles and are played back only in the order determined by the navigation command.

If the user selects the second title # 2, then the second title # 2 includes information that indicates the second navigation object # 2, while the second navigation object # 2 is executed. The second navigation object # 2 also includes a navigation command for reproducing a predefined playlist. A predefined playlist is played when a navigation command is executed. After the playlist is reproduced in accordance with the second navigation object # 2, the second navigation object # 2 indicates the second hidden title # 2 and the fifth navigation object # 5 indicated by the second hidden title # 2 is executed.

Fig. 4B is a diagram for explaining a method for reproducing the main mode data and the full mode data recorded on the disc 100 in accordance with Fig. 1C.

4B, index information includes start information, menu information, and title information. Title information contains many blocks of information, each of which denotes a navigation object. The block information is implemented as the title #i or as the hidden title #j. Title #i may be user controlled for playback, and hidden title #j may not be user controlled for playback. That is, the hidden title #j is reproduced only in the order predefined by the manufacturer of the disc 100.

When the disc 100 is loaded into the reproducing apparatus, a plurality of navigation objects are reproduced in accordance with the launch information. If the user brings up the menu, the menu information is reproduced. If the user selects one of the titles shown in the menu, then the title information indicates the entry point where the data should initially be executed or played back, that is, an object.

In an embodiment of the present invention, the object is divided into a navigation object corresponding to the main mode data, a viewing object corresponding to the viewing data, and a program object corresponding to the program data. The navigation object is implemented as a program of commands, which provides a command for reproducing data of the main mode, and the viewing object is implemented as a file that is recorded with the viewing data, for example, in a markup language or an executive markup language, and has a file name as an input point. A program object is implemented as a specific program file that has a file name as an input point.

One object related to a predefined mode may be associated with another object related to another mode so as to provide reproduction. If objects belonging to the same mode are connected to each other, then the conversion of modes is not required. However, a mode conversion is necessary if objects belonging to different modes are connected to each other. Mode conversion is performed using hidden title information contained in the title information. That is, the title information indicates an entry point for searching for titles and an entry point for reproducing a predefined title, and the hidden title information indicates an entry point for converting a mode selected from a main mode, a viewing mode and a program mode.

After the disc 100 of FIG. 1C is loaded, the reader 10 of the reproducing apparatus reads the index information 2 and transfers the read index information 2 to the application manager 35. The application manager 35 provides instructions from the startup information to indicate a title to be played initially. Alternatively, if the user calls up the menu and selects the title from the titles shown in the menu, the application administrator accesses the entry point of the selected title and transfers the object indicated by the selected title to the mechanism corresponding to the selected title. According to an embodiment of the present invention, since the initial title to be reproduced, as indicated by the start information, is a navigation object, in step 1, the entry point of the navigation object is transmitted to the navigation mechanism 33. The navigation engine 33 starts reproducing the main mode data by transmitting the navigation command contained in the navigation object to the presentation engine 34. In operation 2, another navigation object is displayed, indicated by the first title # 1, after the navigation object is first executed in the main mode. The navigation object reproduced in step 2 can be reproduced in step 3 by searching for a title. Similarly, the second and third titles # 2 and # 3, respectively, are associated with the viewer and the program object in steps 4 and 5, and the titles can be played when the user enters a command to play them.

In operation 6, the navigation object indicated by the first title # 1 is connected to the viewing object through the first hidden title # 1. In other words, the mode conversion is performed with reference to the first hidden title # 1. In this case, the navigation mechanism 33 transfers control to the application administrator 35. The application administrator 35 issues instructions to the viewing engine 31 for reproducing the viewing object indicated by the first hidden title # 1. Therefore, the user cannot directly access the hidden title. Since the title can contain data in various modes, by converting the mode with reference to the hidden title, the user can play the title regardless of the mode conversion.

5A is a diagram illustrating a data structure of the title #i according to an embodiment of the present invention.

5A, the title #i contains access type information that acts as attribute information. The title #i also indicates the entry point of the title. Access type information indicates whether the user can directly control the title to be played. Since the title #i allows direct access by the user, access type information presents the title #i as “normal title”.

5B is a diagram illustrating a data structure of the hidden title #j according to an embodiment of the present invention.

5B, the hidden title #j also contains access type information that acts as attribute information. Access type information indicates whether the user can directly control the title to be played. Since the hidden title #j prohibits direct access by the user, access type information represents the title #j as a “hidden title”. The access type information also contains information that indicates whether the title number for the “hidden” title is displayed to the user. That is, access type information displays the title number if the title number is assigned to the hidden title, and does not display the title number if the title number is not assigned to the hidden title.

For example, assuming that access type information is presented in binary form, if the value of 1 bit of access type information is “1”, then the title is a hidden title that is used only as a transition point to conversion mode, while if the value of access type information equals “0”, then the title is a normal title, which can also be used as an entry point to search for a title.

Table 1 shows the case when only access type information of 1 bit is included in the attribute information, and table 2 shows the case where access type information and title display information are respectively included in the attribute information. Here, the attribute information may be index table information.

Table 1 Title Access Type Result 0 User title search allowed one User title search not allowed

table 2 Title Access Type Result 00 User title search is allowed and title number is displayed 01 Title search by user is allowed and title number is not displayed 10 Title search by the user is not allowed, and title number is displayed eleven Title search by the user is not allowed, and title number is not displayed

According to Table 2, the first bit of the title access type indicates whether the title search can be directly performed using a user operation or whether the corresponding title can be searched only by the navigation command. The second bit of the title access type indicates whether the title number is displayed to the user.

The present invention can be implemented in a universal digital computer by executing a program with the medium used by the computer, including, but not limited to, magnetic storage media (e.g., ROM, RAM, floppy disks, hard drives, etc.), optically readable media (e.g. , CD-ROM, DVD, etc.) that carry vibrations (e.g., Internet transmissions). Computer-readable media for recording data can be installed in a computer system connected to a network, stored and executed as computer-readable codes in a distributed computing environment.

As described above, since the attribute information indicates whether the plurality of titles are hidden titles or not, the disc manufacturer can generate content with which various applications can be implemented. That is, since the titles are divided into titles that are directly accessible and titles that are accessible only in a predetermined order, as determined by the manufacturer of the disc, content may be generated that meets the wishes of the manufacturer of the disc. Accordingly, various applications may be provided to users.

Although several embodiments of the present invention have been described and shown, it will be understood by those skilled in the art that modifications to the described embodiments can be made without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (9)

1. A storage medium containing, at least one title that is reproduced as a moving image, and at least one block of attribute information that corresponds to at least one title and indicates whether the user can control one of the at least one title to be reproduction, wherein the attribute information includes access type information that represents each title as a “normal title” if the title can be searched through a user operation and presents is each title as "hidden title" if it can not be searched by the user operation, the type of access information for a title that represents the title as "hidden title" further includes information that indicates whether the title number is displayed for the title. 2. The storage medium according to claim 1, in which the title is displayed if the value of the information about the type of access is 0, and the title is not displayed if the value of the information about the type of access is 1. 3. A playback device comprising a reader that reads data containing at least one title to be reproduced as a moving image and at least one block of title information that corresponds to at least one title with media for storing information, a buffer that buffers data read by the reader, and a decoder that interprets title information to indicate an entry point of at least one title and reproduces at least one title, wherein the decoder interprets the attribute information contained in the title information to indicate whether the user can control the title to be played, the decoder determines that the user operation on the title is permitted if the access type information that acts as the attribute information represents the title as “normal title”, and that the user operation on the title is not permitted if the access type information represents the title as “hidden title”, and if the information The type of access represents the title as a “hidden title”, then the decoder displays the title number for that title when the title is reproduced in accordance with the information contained in the attribute information that indicates whether the title number is displayed for that title. 4. The playback device according to claim 3, in which the title is displayed when the value of the information about the type of access is 0, and the title is not displayed when the value of the information about the type of access is 1. 5. A playback method comprising reading at least one title, which is reproduced as a moving image, and at least one block of title information that corresponds to at least one title, the interpretation of attribute information included in the title information, which indicates whether the user operation can search for the corresponding one of the at least one title, the interpretation of the title information to indicate the entry point of at least one title and reproducing at least one title, and displaying a title number for at least one title when at least one title is reproduced in accordance with information contained in attribute information that indicates whether the title number is displayed for at least one title, if the information at least one title as “hidden title” represents the type of access, the interpretation of the attribute information includes determining that a user operation for at least one title is permitted if the access type information included in the attribute information represents at least one title as a “normal title”, and that a user operation for at least one title is not permitted if the access type information represents at least one title as a “hidden title”. 6. The playback method according to claim 5, further comprising displaying at least one title if the value of the access type information is 0, and at least one title is not displayed if the value of the access type information is 1. 7. A reproducing apparatus using an information storage medium comprising a reader that reads titles and title information corresponding to specific titles from an information storage medium, a buffer that buffers titles and title information, and a decoder that selectively decodes the titles based on title information and attribute information in title information indicating user control of the selected decoded titles, the attribute information further comprising number display information indicating whether a title number of one of the selected decoded titles should be played. Priority on points: 10/07/2003 according to claims 1, 3, 5, 7; 02/03/2004 according to claims 2, 4, 6.

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