KR20060087980A - Method and apparatus for enabling enhanced navigation data associated with contents recorded on a recording medium to be utilized from a portable storage - Google Patents

Abstract

The present invention relates to a method and apparatus for enabling playback of contents on an interactive DVD (DVD) using a portable storage device. The present invention relates to additional navigation data for interactive reproduction of contents contained in a recording medium. The auxiliary storage information for linking the additional navigation data with the content when receiving from a server connected to a network and storing the received additional navigation data in an auxiliary storage device such as a USB memory that is detachably coupled to a playback device. By also writing to the device, the contents of the recording medium and the additional navigation data in the auxiliary storage device are correlated.

Interactive, Navigation, Link, Download, Secondary Memory, File Structure, Directory, Enhanced, Navigation, Removable

Description

A method and apparatus for enabling enhanced navigation data associated with contents recorded on a recording medium to be utilized from a portable storage}

1 illustrates a configuration of an interactive disc player to which the present invention is applied.

2 illustrates a structure of identification information of a content which uniquely identifies the content included in the navigation data of a recording medium containing the content, according to the present invention;

3 illustrates a structure of another embodiment of identification information of content according to the present invention;

4 illustrates an example in which additional navigation data and identification information of content are stored together in a removable auxiliary memory according to the present invention.

5 is a diagram schematically illustrating a process of playing content in another player using a removable auxiliary memory stored together with identification information of content associated with additional navigation data according to the present invention.

<Description of the symbols for the main parts of the drawings>

2: USB memory stick 10: disk management unit

11: network manager 12: input

13: I / O interface 20: storage

21: Data Cache 30: Additional Presentation Engine

31: streaming decoder 32: main decoder

33: video component 34: audio mixer

40: playback management unit 100: playback controller

110: additional content execution unit

The present invention relates to a method and apparatus for enabling playback of content on a record carrier, such as an interactive DVD (DVD), using a removable storage device.

Large digital data, such as DVDs, have a very high recording capacity. DVD's recording capacity is a large-capacity recording medium capable of recording and storing digital high-quality audio data as well as high-quality video data for a long time.

The DVD has two recording areas, one of which is an area in which actual data (i.e., video or A / V data) is recorded, and the other is a control or navigation necessary for controlling reproduction of the recorded actual data. Navigation) Area where data is recorded.

When the DVD is inserted and seated in the DVD player, the navigation data is first read and stored in a memory in the device, and then the actual data (A / V data) is reproduced by referring to commands or control information included in the navigation data. do. As a result, the user can watch the high quality video recorded on the DVD through the DVD playback apparatus.

Recently, interactive or enhanced navigation (i.e., I-DVD or ENAV (Enhanced Navigation)) systems have been proposed. Interactive content discs, such as I-DVD or ENAV discs, can control, navigate or enhance A / V data in the form of 'html (Hyper-Text Markup Language)' or 'xml' (Extensible Markup Language) files. It may include. The control or navigation data may be provided by an interactive playback device (i.e., an I-DVD or ENAV disc player) by the main A / V data recorded on the interactive disc, by additional auxiliary information such as a description of a scene or actor. Let's play together.

Navigation data of this function is referred to as enhanced or additional navigation data, wherein the additional (enhanced) navigation data, together with the main A / V data, is recorded on a content disc in playback-only form or can be provided from a remote server over a network. Can be.

Thus, a player playing an interactive disc receives additional navigation data associated with the content from the server prior to or during playback of the mounted disc and stores it in a fixed internal storage device, such as a hard disk or memory. And the contents on the interactive disc are reproduced according to the additional navigation data.

However, even though a player has downloaded and used additional navigation data, the user may move to a location, and when the user wants to play the interactive disk containing the same content in another player and play it again, the additional navigation data associated with the additional navigation data may be downloaded. You must receive it again.

In addition, if the player is not connected to the network, the additional navigation data is not downloaded, and therefore, the enhanced presentation function (provided by the additional navigation data) for the content contained on the disk is not available and is connected. If so, it takes time to receive the necessary additional navigation data back over the network.

This is very cumbersome for users who move frequently and frequently change the location where they play interactive discs.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object thereof is to provide a method of storing and using additional navigation data of A / V content recorded on a recording medium in a portable storage device.

According to an embodiment of the present invention, a method for receiving additional navigation data for interactive reproduction of contents contained in a recording medium is received from a server connected to a network, and the received additional navigation data is detachably combined with a playback device. And storage in the auxiliary storage device to include information for linking with the content recorded on the recording medium, thereby connecting the contents of the recording medium and the additional navigation data in the storage device. .

In one embodiment of the present invention, information for linking with the content is recorded in the form of a file structure based on the identification information of the content.

In one embodiment of the present invention, information for linking with the contents is recorded in a directory structure and a directory name.

In another embodiment of the present invention, information for linking with the content is recorded as a file name.

In still another embodiment of the present invention, information for linking with the content is constructed from identification information (IIoC) of the content, and inserted and recorded in additional navigation data.

In an embodiment of the present invention, the information for linking with the content is constituted by information in a recording medium containing the content.

In another embodiment of the present invention, the information for linking with the content is configured based on information received from a server connected through a network.

In addition, the method according to another embodiment of the present invention, the identification information (IIoC) of the contents contained in the recording medium, the addition to the secondary storage device detachably coupled to the playback device associated with the identified identification information After checking whether the navigation data is stored, if the navigation data is stored, the content is reproduced based on the additional navigation data recorded in the auxiliary storage device.

In one embodiment of the present invention, the identification information (IIoC) of the content is composed of the provider identification information of the content and the content identification information ( CID: Content ID) of the provider uniquely assigned to the content by the provider.

In one embodiment of the present invention, the provider identification information is a provider name, and the content identification information (CID) is a title of the content.

In one embodiment of the invention, the additional navigation data downloaded from a server connected to the network is stored in the removable secondary storage device, for example a USB memory.

In another embodiment of the present invention, the downloaded additional navigation data is stored in a storage medium fixed to the playback device, and the stored additional navigation data is copied and recorded to the auxiliary storage device.

In one embodiment of the present invention, the identification information of the content is additionally recorded for each object constituting additional navigation data stored in the auxiliary storage device.

In the following, a preferred embodiment of a method and apparatus for enabling additional navigation data associated with content recorded on a record carrier from a portable storage device according to the present invention will be described in detail.

1 shows a configuration of an interactive disc player to which the present invention is applied. The player of FIG. 1 is a disc manager 10 for driving a disc 1 and reading data contained therein, a network manager 11 connected to the Internet or a home network to exchange data with a network, from a user or an external device. An input unit 12 for managing input from, an interface 13 for connecting and communicating with an external device, for example a USB device, data necessary for reproducing at the time of loading of the disc 1, and the stored data is stored Storage 20 which is preserved until retrieval, data cache 21 where data is stored / updated as necessary at the moment of reproduction, and main decoder which decodes main content data reproduced from disc 1 and outputs it as video and audio signals ( 32), a streaming decoder 31 for decoding A / V streaming data provided from an external network, additional content An additional presentation engine 30 for outputting graphics, effect sounds, and / or enhanced text data constituting the video, and an image configuration unit 33 for outputting the input video / graphic signals into a single video screen. An audio mixer 34 for synthesizing the input audio signals, a reproduction management unit 40 for managing an A / V presentation operation, an additional content performing unit 110 for interpreting and performing additional navigation data files, and components And a playback controller 100 for controlling interactive content playback by exchanging data with and transmitting control data to necessary components.

For the purpose of describing an embodiment of the present invention, it is assumed that a portable USB memory stick (hereinafter referred to as a “memory stick”) 2 is connected to the interactive disk player as an auxiliary storage device through the interface 13. do.

The disk 1 mounted in the apparatus of FIG. 1 has an enhanced presentation function of the A / V content, for example, in addition to an essential navigation data file for playback and / or navigation of the A / V content contained therein. Additional navigation data for a function such as a scene or a description of an actor is recorded, and the additional navigation data (consisting of one or more files) is stored in the storage 20 through the disk manager 10. And interpreted by the additional content performing unit 110. Additional object data constituting the additional navigation data, for example, data for a small screen or a sound effect, may also be stored in the storage 20. In the case of a temporary object that is unnecessary due to use once, the data cache 21 )

However, the network management unit 11 may be received from an external network other than the disk 1 on which the latest version of the additional navigation data whose function is further improved than the additional navigation data contained in the mounted disk 1 is received. The process of acquiring the enhanced additional navigation data from the external network may be performed automatically by the player or at the request of the user. The improved latest version of the additional navigation data may include additional audio streams (additional foreign languages and additional comments from the producer), additional subtitles such as additional text or graphics, and / or playback scenarios of additional or improved content ( Contains navigation programs that specify scenarios.

On the other hand, even if there is no additional navigation data on the disc 1, the additional navigation data identified from the contents contained in the disc 1 can also be received through the external network. The link between the contents on the disk 1 and the additional navigation data in a server (not shown) connected to the network may include an identification number such as a serial number recorded on the disk 1 or a provider ID and a content ID. It can be accomplished by mediation.

When the playback controller 100 detects that the memory stick 2 is connected through the interface 13, identification information of contents on the currently mounted disk 1 is described in detail later. Check whether there is additional navigation data associated with the content on the disc, and if not, request the server connected to the external network through the network management unit 11 to add the additional navigation data. To be downloaded. The additional navigation data received thereafter is stored in the memory stick 2 instead of the storage 20. The storage at this time is performed through a file system (F / S: File System) in the memory stick 2.

In another embodiment, the downloaded additional navigation data may be first stored in the storage 20 and then copied and stored in the memory stick 2.

On the other hand, when the additional navigation data is stored in the memory stick 2, the identification information (IIoC) of the content described later in detail is added or stored under a file structure determined according to the content.

The playback controller 100 stores the information stored in the disk 1 and information linking the additional navigation data before the start of storing the downloaded additional navigation data or after the storage is completed. In the document). This will be described in detail.

The playback controller 100 reads the information IIoC for identifying the content recorded on the disk 1 from the navigation information previously loaded into the storage 20. As shown in Fig. 2, the content identification information is recorded in the video title information management table VTSI_MAT in the video title set information VTSI of the navigation information in the size of 8 bytes. The eight bytes consist of a four-byte content provider identifier 201 and a four-byte content identifier (CID) 202 to uniquely specify content by recording an identification number in each area. In the content identifier (CID) 202, an identification value uniquely assigned by the content provider to the corresponding content is recorded. When the content providers are different, the value of the content identifier may be the same.

3 is another embodiment of the structure of the identification information (IIoC) of the content recorded on the disc 1, and is composed of a 16-byte content provider identifier and a 32-byte content identifier (CID). In this embodiment, a character string of an ASCII code, for example, a provider name and a title name of content are recorded in each identifier, and the number of character strings recorded in the corresponding field is recorded in the first byte (301, 302) of each identifier.

The embodiment of the structure of the identification information (IIoC) of the above content is merely exemplary, and in addition, the structure of the identification information of the content may be defined in various ways.

In addition, as another embodiment of the present invention, the playback controller 100, in addition to the identification information of the content previously obtained from the disk 1, as shown in FIG. 2 or 3, each object constituting the additional navigation data additionally. (Each may correspond to a file), for example, may obtain and record detailed information about a media object such as text, audio, and / or video. Examples of detailed information about the media object may include a type of media, a codec required to decode the media, language information of a text code, and the like.

Such detailed information is interpreted by, for example, the reproduction controller 100, by requesting the downloaded additional navigation data to be interpreted by the additional content performing unit 110, for example, a script written in XML, SMIL, or the like. It is possible to grasp by receiving the information obtained by.

When the identification information of the content and the detailed information of each object are obtained, the playback controller 100 further includes an additional object including the obtained information at the head of each object constituting the additional navigation data, as shown in FIG. 4. Header information 401n is added.

Instead of adding IIoC to each object as shown in Fig. 4, a file structure having a directory name determined according to the IIoC found from the mounted disk 1 is created in the storage area in the memory stick 2 and under the directory IIoC. It is also possible to store additional navigation data without adding. In this case, the directory and its name in the tree structure associate the additional navigation data with the content.

For example, if the title of the content contained in the mounted disc 1 is Day After Tomorrow and its provider name is Centropolis Entertainment, the playback controller 100 may use the file system (e.g. F / S: File System), create a directory [Centropolis Entertainment] under the root directory, create a [Day After Tomorrow] directory under that directory, and download the downloaded additional navigation data to the [Day After Tomorrow] directory. Record each file in the log.

In order that the memory stick 2 can also be used for other general purposes, a specific directory for storing such additional navigation data, for example, a directory named as [HD-DVD] is first created in the root directory, and then It is also possible to create a directory of the provider name under the [HD-DVD] directory, and again create a directory whose name is the content title under the directory of the provider name, and store the additional navigation data as each file under that directory. In other words, for the above example,

＼

[HD-DVD] Media type

[ Centropolis  Entertainment] Contributor

Day After Tommorrow ] title

information.txt

actors_description.htm

korean_language.wav

.......

It may also be stored in the form. Here, * .htm and * .wav files constitute additional navigation data.

An information file (eg, information.txt) may be included under each generated directory. The information file under [HD-DVD] describes the media of the HD-DVD, and the information file under the [Provider name] directory. A description of the provider and / or a title provided by the provider, and an information file under the [Title] directory contains a general description of the title.

On the other hand, the storage structure of the additional navigation data for the contents contained in the mounted disk 1 may be designated by a server providing the additional navigation data, not depending on the IIoC recorded on the disk 1. That is, when the server sends the requested additional navigation data, it may make all the files into one archived file and specify in the archiving file up to the directory where each file should be stored. In this case, when the playback controller 100 releases the archived file with the help of the additional content performing unit 110, it creates a necessary directory in the memory stick 2.

As described above, the information associated with the contents of the mounted disk 1 may be implemented by each file name instead of the directory structure and the name thereof. For example, by specifying a file name in the form of provider name_title.extension, the file name may function as link information with the content. If a plurality of files having the same extension (for example, wav, ac3, htm, etc.) must be provided, the file name may be specified in the form of provider name_title_file classification information.extension. The file classification information may be a serial number or text describing the file contents. As a delimiter for distinguishing each provider name, title, and file classification information, a character such as '_' (underbar) may be used.

With respect to the downloaded additional navigation data, information for linking with the contents on the disk as described above is generated, and the information stored in the memory stick 2 together with the downloaded additional navigation data is completed or has information associated with the contents. When the additional navigation data downloaded under the directory structure or as a file name is completed to be stored in the memory stick 2, the playback controller 100 sends the additional navigation data to the interface 13 when a user requests playback. The additional content performing unit 110 reads the data through the additional content performing unit 110, and the additional content performing unit 110 interprets the additional navigation data and transmits the additional navigation data to the playback controller 100 based on a procedure and / or a command specified therein. Request playback, and accordingly, the disc 1 under the control of the playback controller 100 Applied to the A / V content is sequential to the main decoder 32 is output by being decoded to the video and audio signals. At this time, some media data of the additional navigation data is transmitted to the additional presentation engine 30 to be decoded and outputted to the user together with the main A / V content.

After the reproduction is completed or the reproduction is not performed and only the additional navigation data is downloaded and stored in the memory stick 2, the user detaches and carries the memory stick 2, as shown in FIG. As described above, when the player 500 moves to a place and connects to another interactive disc player 500 (Player # 2) and inserts the disc 1 'containing the content and requests playback, the player 500 attaches the mounted disc. The title information management table (VTSI_MAT) in the navigation information on (1 ') is searched to identify the identification information of the content having the structure of FIG. 2 or 3, and the identification information is recorded as shown in FIG. The identification information of the content recorded in the one or more additional object header information 401n in the memory stick 2 is compared. In the case of the embodiment having a directory structure or file name by the identification information of the identified content, it is checked whether a directory or file associated with the identification information of the content exists in the memory stick 2. In an embodiment in which a directory structure is generated based on the identification information of the content, when a directory indicating a media type, for example, [HD-DVD], is generated, the player 500 includes the corresponding media directory and the following directory. No access other than

If the identification information of the two contents to be compared are identical to each other, or if there is a file having a directory structure or a file name according to the identification information of the identified content, the player 500 adds additional navigation data in the memory stick 2. If it is determined that the content is on the mounted disk 1 'and does not perform the operation of downloading the additional navigation data through the connected network, and there is a user's request for playback, as described above, the playback based on the additional navigation data is performed. Depending on the scenario, the content on the mounted disk 1 'is also played back along with the additional content of the additional navigation data.

If the identification information of the two contents to be compared is not identical to each other, or does not have a directory structure according to the identification information of the identified content, or there is no file having a file name, the player 500 is connected to the mounted disk through a connected network. Additional navigation data associated with 1 'is downloaded, which is stored in the memory stick 2 as described above for use by other players.

It is to be understood that the present invention is not limited to the above-described exemplary preferred embodiments, but may be embodied in various ways without departing from the spirit and scope of the present invention. If you grow up, you can easily understand. If the implementation by such improvement, change, replacement or addition falls within the scope of the appended claims, the technical idea should also be regarded as belonging to the present invention.

According to the present invention described in detail above, by storing the additional navigation data of the content recorded on the recording medium in the portable storage means together with the link information associated with the content, even if the place or the disc player is changed, the same content is not included. Therefore, there is no need to download new additional navigation data, so that the contents contained in the recording medium can be quickly played.

Claims (24)

In the recording medium, Content including at least video data; And It comprises a navigation data having information for the reproduction and / or navigation of the content, And the navigation data includes information for identifying the contents. The method of claim 1, And the information identifying the content includes provider identification information of the content and content identification information uniquely assigned to the content by the provider. In a removable data storage medium, It is configured to include a storage area for storing additional navigation data having additional information about the content contained in other media, And a file structure in the storage area for linking the additional navigation data to the contents. The method of claim 3, wherein The file structure includes a directory having a provider name and a title for uniquely identifying the content, and a directory having a provider name, wherein the directory having the provider name is a structure including a directory having a title as a subdirectory. Storage medium. The method of claim 3, wherein The file structure is a structure in which a file name including a provider name and a title for uniquely identifying the content is included in at least one file for storing the additional navigation data. A method for reproducing contents recorded on a recording medium by a reproducing apparatus, the method comprising: Receiving additional navigation data for interactive reproduction of the content from a server connected to a network; Storing the received additional navigation data in an auxiliary storage device detachably coupled to the playback device; And And recording information for identifying the content in the secondary storage device so as to link the contents of the recording medium with the additional navigation data in the storage device. The method of claim 6, The information for identifying the content includes a provider identification of the content and content identification information uniquely assigned to the content by the provider. The method of claim 6, The method may include adding information for identifying the content to each object constituting the additional navigation data. The method of claim 6, The information for identifying the content is obtained from the recording medium or the server. A method for reproducing contents recorded on a recording medium by a reproducing apparatus, the method comprising: Receiving additional navigation data for interactive reproduction of the content from a server connected to a network; And And storing the received additional navigation data in an auxiliary storage device detachably coupled to the playback device. And said step 2 stores said additional navigation data in a file structure for linking said additional navigation data to said content. The method of claim 10, The file structure includes a directory having a provider name and a title for uniquely identifying the content, and a directory having a provider name, wherein the directory having the provider name is a structure including a directory having a title as a subdirectory. Way. The method of claim 11, And the provider name and title for uniquely identifying the content are obtained from the recording medium. The method of claim 10, Wherein the file structure is specified at a server providing the additional navigation data. The method of claim 10, And the file structure has a file name for at least one file for storing the additional navigation data, the file name including a provider name and a title for uniquely identifying the content. A method for reproducing contents recorded on a recording medium by a reproducing apparatus, the method comprising: Confirming identification information of contents contained in the recording medium; Confirming whether or not the additional navigation data linked to the identified identification information is stored in the auxiliary storage device detachably coupled to the playback device; And And if present, reproducing the content based on additional navigation data stored in the auxiliary storage device. The method of claim 15, In the step 2, it is determined whether the additional navigation data is stored by checking whether the same identification information as the identified identification information is recorded in the auxiliary storage device. The method of claim 15, And the identification information of the content includes provider identification information of the content and content identification information uniquely assigned to the content by the provider. The method of claim 15, In the step 2, it is determined whether the additional navigation data is stored by checking whether a directory having the provider identification information and the content identification information, respectively, is recorded in the auxiliary storage device. . The method of claim 15, In the step 2, it is determined whether the additional navigation data is stored by checking whether a file including the provider identification information and the content identification information is recorded in the auxiliary storage device. Way. An apparatus for reproducing contents recorded on a recording medium, A reproducing unit driving the recording medium to read and decode the recorded content; A connection unit connected to an external network and an external device to exchange data; And Confirm whether the auxiliary storage device is detachably connected through the connection unit, and if connected, obtain additional navigation data for the content and store the information together with linking the content to the auxiliary storage device; And a controller for controlling the playback unit to play the content based on the additional navigation data in the auxiliary storage device. The method of claim 20, The information for linking with the content is identification information including provider identification information of the content and content identification information uniquely assigned to the content by the provider, and is inserted into and stored in the additional navigation data. . The method of claim 20, And the information for linking with the content is a file structure having a directory or file including a provider identification of the content and content identification information uniquely assigned to the content by the provider. The method of claim 20, The controller is further configured to provide additional navigation data specified by the linking information stored in the auxiliary storage device when the information for linking with the contents stored on the recording medium is recorded in the auxiliary storage device. And play the content based on the content. The method of claim 20, And the controller acquires the additional navigation data from the external network through the connection unit if information for linking with the contents contained in the recording medium is not recorded in the auxiliary storage device.

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