KR20080055573A - Method and apparatus for reproducing data - Google Patents

Abstract

A method and an apparatus for reproducing data are provided to process an interactive object by an interactive module so as to supply various interactive contents to a user at different devices. A servo(14) controls operation of a pickup(11). A signal processing part(13) modulates a signal to be recorded into a signal recordable in a recording media. An interactive module(15) processes an interactive object. A microcomputer(16) controls the operations of the pickup, the signal processing part, the servo, and the interactive module. Data is read from a recording medium(30), the interactive module, and a storage according to the control of a control part(12). A clip AV stream and the management information on the clip AV stream are recorded in the recording medium. External data of the recording medium is downloaded and stored in a storage(19).

Description

Method and apparatus for reproducing data {Method and apparatus for reproducing data}

Figure 1 is shown to aid the conceptual understanding of the present invention, it is shown to show an example of the integrated use between the optical recording and playback device and peripherals.

2 conceptually illustrates the relationship between the recording medium of the present invention and an apparatus for recording and reproducing the recording medium.

3 shows one embodiment of the overall configuration of an optical recording and reproducing apparatus.

4 shows a recording structure of data recorded on the recording medium of the present invention.

5 is shown to help conceptually understand the title reproduction of the present invention.

Fig. 6 shows an example of reproduction of the interactive content by the level B recording / playback apparatus.

7 shows an example of reproduction of interactive content by the optical recording and reproducing apparatus of the present invention.

8 to 11 show embodiments of menus generated by the optical recording and reproducing apparatus of the present invention.

Fig. 12 shows an example in which the interactive content is reproduced in the optical recording and reproducing apparatus of the present invention.

* Explanation of symbols for main parts of the drawings

11 pickup 12 controller

13 signal processing unit 14 servo

15: interactive module 16: microcomputer

17: AV decoder 18: AV encoder

19: storage

The present invention relates to a data reproducing method and a reproducing apparatus for reproducing data associated with a recording medium.

As a recording medium, an optical disk capable of recording a large amount of data is widely used. In particular, new high-density recording media that can record and store high-quality video data and high-quality audio data for a long time, such as Blu-ray Disc (BD) and High-Definition DVD (HD-DVD: High Definition) Digital Versatile Disc) is being developed.

In addition, the development of the high-density recording medium provides a function of networking with the outside of the recording medium, integrated reproducing function of the recording medium and data stored outside the recording medium. In addition, it is possible to provide data in which the interactivity with the user remarkably exceeds the existing recording medium.

Recently, development of an optical recording and reproducing apparatus capable of reproducing data in the high density recording medium and data existing outside the recording medium has been in progress. However, it is true that the development is difficult due to the linkage between the optical recording and reproducing apparatus and the peripheral period, and the specification related to the high density recording medium being not fully completed.

The present invention was created in view of the above circumstances, and an object thereof is to provide a method and an apparatus for reproducing content including data to ensure interactivity with a user.

In order to achieve the above object, the present invention provides a method for generating a menu listing at least one of the content units, in which the content unit reproduces one or more recorded media, without executing an interactive application; And reproducing the content unit selected from the menu.

In addition, the present invention provides a reproduction unit for reproducing data recorded on the recording medium in the reproduction of the recording medium in which at least one content unit is recorded; And a control unit for generating a menu listing the content units recorded on the recording medium without executing the interactive object, and controlling the playback unit to reproduce the content unit selected from the menu. to provide.

The invention also encompasses embodiments in which the content unit is a title or chapter.

The present invention also includes an embodiment in which the generating of the menu includes determining a main content unit among the content units recorded on the recording medium.

The invention also encompasses an embodiment in which the main content unit is not an empty content unit, devoid of audio and video data or composed of black video.

In addition, the present invention includes an embodiment in which the main content unit is displayed separately from other content units in the menu.

The present invention also includes an embodiment in which the longest content unit having the longest playback time among the content units recorded on the recording medium is determined as the main content unit.

Further, the present invention includes an embodiment in which the generating of the menu includes determining an empty content unit in which content units recorded on the recording medium are free or composed of black video and audio and video data.

The invention also includes an embodiment in which the empty content unit without the audio and video data is identified from management information for the content unit recorded on the recording medium.

In addition, the present invention includes an embodiment in which the empty content unit consisting of the black video is identified from the characteristic that the amount of data per picture is reduced when the black video is compressed.

The invention also includes an embodiment in which the empty content unit is displayed separately from other content units in the menu.

The invention also includes embodiments in which the empty content unit is not listed in the menu.

In addition, the present invention includes an embodiment in which the selection of the empty content unit is prohibited or not reproduced even when selected.

Hereinafter, with reference to the accompanying drawings, the present invention will be described in detail. Note that the same reference numerals are used to refer to the same elements in each drawing, even if they are shown in different drawings. In addition, since the terms used below are named for convenience of description, it is obvious that other terms indicating the same function may be replaced with the other terms.

In the present invention, a recording medium is a medium on which data is recorded, for example, a "CD" "DVD", "Blu-ray Disc (BD)", "HD-DVD", "Near Field Recording (NFR) disk". And the like may be the recording medium of the present invention.

In addition, in the present invention, the term "presentation object" refers to a kind of execution unit. The expression object is executed by the optical recording and reproducing apparatus, and is provided to or connected to the optical recording and reproducing apparatus 10 to be described with reference to FIG. , Subtitles, etc. As a result, the user experiences various contents intended by the content provider by each expression object executed in the optical recording / reproducing apparatus 10. Each representation object is contained in a file, archive data, or the like, respectively, and recorded on a recording medium or downloaded to an optical recording / reproducing apparatus through various communication means.

In this regard, in the present invention, for convenience of description, the expression object is an A / V object (Audio / Video object) that does not largely support interactivity with the user, and interactive functions such as browsing and searching to the user (browse (browse) It is divided into interactive objects (also known as interactive applications) that support. The A / V object may include video, audio, simple images, picture images, and the like, and the interactive object may include various button images, texts, and sound effects displayed on the screen for interactivity with the user. Various button images, texts, sound effects, etc. of the interactive object may be provided as a menu to a user.

In addition, in the present invention, "resource" refers to a file, archive data, etc. constituting an expression object. The optical recording and reproducing apparatus 10 of the present invention provides the expression object to the user by reproducing the resource.

In addition, in the present invention, "reprodution" refers to an operation of reading data stored in a disk, storage, and the like, and is used as a concept including execution of a stored computer program, output and duplication of stored data, and the like.

In addition, in the present invention, the term "Title" refers to a reproduction unit that forms an interface with a user as one complete content unit. Each title may be divided into one or more chapters, may be selected by a title menu, or may be indicated using a title number. Each title is linked with specific navigation data, and files constituting an expression object related to the title are reproduced according to a command or a program related to the navigation data.

In relation to the following, titles that support seamless multi-angle, multi-story, language credits, director cuts, and the like among titles in which high-definition video data recorded by MPEG compression method recorded in a disc are described as "Movie Title". ) " In addition, an interactive program (e.g., iHD, etc.) that enables high interactivity that supports update of a title in a disc or connectivity with a network among titles in which high-definition video data by MPEG compression is recorded. Titles containing data consisting of Java programs, etc.) are called "interactive titles".

In relation to this, it is noted that, in addition to the title, if the user is a playback unit that forms an interface through a menu or the like, the content unit can be used. For example, chapters, scenes, playback paths for each angle may be the content unit.

In addition, in the present invention, "content" means data provided by an author or a content provider of a recording medium as a content constituting a title. In the present invention, the content is largely defined by the standard content and the standard content in which the content defined in the existing recording medium is extended for high-resolution video, high-quality audio and some new functions. It can be divided into interactive content that extends the video and audio to be realized and realizes greater interactivity. Interactive titles, chapters, scenes, subtitles, etc., including the interactive object may be classified as interactive content, and titles, chapters, scenes, subtitles, etc., not included in the interactive object may be classified as standard content.

In this regard, a content provider of interactive content may control the playback of the interactive content using an interactive object. In addition, the content provider may control the screen configuration by the expression objects of the interactive content through the interactive object when the interactive content is displayed on the screen. The interactive object may be used to play the interactive content and to control a user operation. For example, the user can input a command such as fast playback or chapter playback to the optical recording / reproducing apparatus through a button or the like displayed on the screen by executing the interactive object.

In relation to this, the recording medium of the present invention may store only one or both types of content, either standard content or interactive content. However, the present invention relates to the reproduction of interactive content that provides high interactivity with a user. Therefore, in the present invention, the recording medium is a recording medium containing interactive content.

In addition, in the present invention, "storage" is a kind of storage means provided or connected to the optical recording / reproducing apparatus 10, and means an element that a user can arbitrarily store and utilize necessary information and data. Data with persistence may be stored in storage 19. Examples of storage generally used at present include a flash memory provided in the optical recording / reproducing apparatus 10, and another one connectable to and removable from the optical recording / reproducing apparatus 10 is a USB memory, an HDD memory or a memory. Mori Card. Storage is also used as a means for storing data associated with the recording medium, the data stored in the storage associated with the recording medium is generally data downloaded from the outside. In this regard, it is also possible for data to be read directly from the record carrier and stored in the storage.

1 is shown to help conceptual understanding of the present invention, and is shown to show an example of the integrated use between the optical recording / reproducing apparatus 10 and a peripheral device.

In this regard, the "optical recording and reproducing apparatus 10" of the present invention is a device capable of recording or reproducing optical discs of various standards, and according to design, specific specifications (for example, CD, BD, HD-DVD, etc.) Only optical discs can be recorded and reproduced. It is also possible to play back without recording. It is already well known that the "optical recording and reproducing apparatus 10" of the present invention can be a "drive" that can be embedded in a computer or the like.

In addition to the function of recording and reproducing the optical disc 30, the optical recording and reproducing apparatus 10 according to the present invention receives an external input signal and processes the signal, and then outputs or connects to the optical recording and reproducing apparatus 10. 20) (eg, a screen, a speaker, etc.) to the user. In this case, there is no particular limitation on the external signal that can be input, but digital broadcasting and the Internet will be representative external input signals. In particular, in the case of the Internet, a medium that is easily accessible to everyone at present. As a result, specific data on the Internet can be downloaded and utilized through the optical recording and reproducing apparatus 10.

Fig. 2 conceptually shows the relationship between the recording medium of the present invention and an apparatus for recording and reproducing the recording medium.

With the development of high density recording media, networking, and communication technologies, it has become possible to provide data whose interactivity with the user significantly exceeds the existing recording media. However, in order to reproduce the data providing high interactivity with the user, it is required that the optical recording / reproducing apparatus 10 be provided with a high speed processor, a large memory and a complex program. .

For example, in order to reproduce interactive content using an iHD program, the performance of the central processing unit of the optical recording / reproducing apparatus is required to be 1 GHz or more, and a high speed graphics processor is required. In addition, at least 512 MB of DRAM is required to implement the functions by the interactive content, and at least 256 MB of flash memory is required to implement the program memory and the storage function. In addition, the optical recording and reproducing apparatus needs to implement a complex program having a code size of 64MB in order to reproduce the interactive content. Hereinafter, a part of the optical recording and reproducing apparatus 10 that processes data related to the interactive function of the interactive content will be described as an interactive module.

In relation to this, the optical recording and reproducing apparatus 10 has different performances according to a processor, a memory, a program, and the like provided in the optical recording and reproducing apparatus 10. For example, low-cost, low-power products such as portable devices (eg, cell phones, PDAs, etc.) typically have slower processors, lower memory, and simpler programs than PCs. As a result, low cost / low power products such as portable devices have a problem that it is difficult to apply interactive modules that require high-speed processors, high-capacity memory, and complex programs. Therefore, depending on the performance of the optical recording / reproducing apparatus, it may occur that interactive content cannot be reproduced.

However, the user may wish to execute even basic expression objects (eg, audio, video objects, etc.) even if the interactive function is not implemented. Or, among the interactive functions of the interactive content, only some functions that can be implemented by a low speed processor, a low memory, and a simple program may be desired to be executed.

In this regard, the present invention will be described below by exemplifying a case in which the interactive content is recorded or reproduced using data other than data related to the interactive function for convenience of description. However, according to the performance of the optical recording and reproducing apparatus, the present invention may be applied in the same manner even when only some of the interactive functions are implemented, not the entire interactive functions. In addition, hereinafter, a playback apparatus having no interactive module capable of processing interactive objects is referred to as a level A recording and playback apparatus 10a, and a playback apparatus having the interactive module is referred to as a level B recording and playback apparatus 10b. . As the performance of the optical recording and reproducing apparatus develops, a new level of recording and reproducing apparatus can of course be defined.

When the optical disc 30 on which the interactive content is recorded is loaded into the level B recording and reproducing apparatus 10b, an interactive module provided in the level B recording and reproducing apparatus 10b processes the interactive object to process the interactive content. Can play. On the other hand, when the optical disc 30 is loaded into the level A recording and reproducing apparatus 10a, the level A recording and reproducing apparatus 10a cannot process the interactive object and thus cannot reproduce the entire interactive content. Cases may occur. In this regard, the interactive object will be described in more detail with reference to FIG. 5.

An object of the present invention is to reproduce A / V data associated with an interactive function even in the level A recording and reproducing apparatus 10a. To this end, the present invention provides an optical recording and reproducing apparatus that reproduces or records the interactive content by using data other than data related to the interactive function or implements only some interactive functions.

2, the interactive content is recorded on a recording medium and provided to an optical recording / reproducing apparatus. However, the present invention is also provided when the interactive content is provided to the optical recording / reproducing apparatus from a storage or a server. It can be applied as well. However, hereinafter, for the convenience of description, the case where the interactive content is recorded on the recording medium will be described as an example.

FIG. 3 shows an embodiment of the overall configuration of the optical recording / reproducing apparatus 10, showing a level B recording apparatus 10b including an interactive module.

First, a pickup 11 for reproducing management information including original data and reproduction management file information recorded on a recording medium, a servo 14 for controlling the operation of the pickup 11, and a reproduction signal received from the pickup 11; A signal processor 13 for restoring a signal to a desired signal value or modulating and transmitting a signal to be recorded into a signal recorded on a recording medium, an interactive module 15 for processing an interactive object, the pickup 11, The microcomputer 16 which controls the operation of the signal processor 13, the servo 14, and the interactive module 15 is basically configured.

In relation to this, the pickup 11, the servo 14, the signal processing unit 13, the interactive module 15, and the microcomputer 16 are also referred to as recording / reproducing units, and the recording / reproducing unit can be configured as a single product. In view of the reproduction, the recording / reproducing section reads data from the recording medium 30, the interactive module 15, or the storage 19 under the control of the microcomputer and / or the control unit 12 and provides it to the AV decoder 17b. . In other words, the recording and reproducing section serves as a reproducing section for reading data from the viewpoint of reproduction. In terms of recording, the recording and reproducing section is a recording section which receives the signal encoded by the AV encoder 18 and records the clip AV stream and management information about the clip AV stream on the optical disc 30.

In addition, the controller 12 is responsible for the control of the entire component in the optical recording and playback device 10, and in particular with respect to the playback of the interactive content, forms an interface (interface) with the user, and included in the interactive content The interactive object controls the reproduction of the presentation objects in the interactive content. In addition, by executing the interactive object, data existing outside the recording medium is downloaded and stored in the storage 19.

In this regard, the controller 12 and the microcomputer 16 may be provided separately to operate. In addition, the functions of the controller 12 and the microcomputer 16 may be integrated to operate as one control unit. Hereinafter, for convenience of description, the controller 12 and / or the microcomputer 16 will be collectively described as a controller. The controller may be composed of a program (software) and / or hardware provided in the optical recording / reproducing apparatus 10.

The AV decoder 17 finally decodes the data provided from the optical disc 30, the storage, and the server to the user under control of the controller, and the AV decoder 17 includes a plurality of decoders according to the type of data. It can be configured as. For example, the AV decoder 17 includes a video decoder for decoding a video object, an audio decoder for decoding an audio object, a subtitle decoder for decoding a subtitle, an interactive decoder for decoding an interactive object, and the like. can do.

In addition, the AV encoder 18 converts an input signal into a signal of a specific format, for example, an MPEG-2 (MPEG2) transport stream, under the control of a controller, in order to perform a function of recording a signal on an optical disk. It is provided to (13).

In addition, as described with reference to FIG. 2, the interactive module 15 is a space for processing various types of information related to the interactive object, and includes a memory (not shown) or a processor (not shown) provided or connected to the optical recording / reproducing apparatus 10. It is constructed using city. It is also possible that the interactive module 15 is configured as part of the controller. In relation to this, since the level A recording and reproducing apparatus 10a does not include the interactive module 15, there is a problem that the information related to the interactive object cannot be processed.

4 illustrates a recording structure of data recorded on a recording medium of the present invention. The recording medium of the present invention may store only one or both types of content of standard content and interactive content, or both.

Specifically, the recording medium of the present invention has a logical structure of volume space, title set information, and interactive content. The volume structure includes a volume and file structure allocated for system information for managing the entire recording medium, and a disc data zone allocated for data in a high density recording medium format. It also consists of Disc others zones for video applications on different record carriers. The disc data zone includes a title set information area in which overall management information of titles recorded on the recording medium is recorded, and an interactive content area in which actual title data is recorded.

In relation to this, the disc data zone may be divided into a stream area in which stream data is recorded and a reproduction management area in which reproduction management information of the stream is recorded. As a result, the recording medium recording structure shown in FIG. 4 is just one embodiment, and it will be apparent that the volume structure of the recording medium may be used differently according to the specifications of the respective recording media.

FIG. 5 is a diagram to help conceptual understanding of title reproduction according to the present invention, and illustrates a relationship between title reproduction management information and expression objects constituting the title.

Titles of the present invention can be largely divided into titles composed only of interactive objects, titles composed only of A / V objects such as video and / or audio objects, titles composed of interactive objects, and A / V objects. Hereinafter, a title composed only of A / V objects is called a movie title, and a title including an interactive object is called an interactive title. A plurality of titles may be recorded on the recording medium of the present invention, and the plurality of titles may be all movie titles, all interactive titles, some movie titles, and some interactive titles.

A movie title and an interactive title will be described in detail with reference to FIG. 5, which illustrates a case where a movie title and an interactive title are mixed and recorded. Title 1 consists of one chapter Ch1, which is represented by execution of an interactive object. Title 2 is divided into three chapters, and Chapter 1 (Chapter 1) is divided into Primary Audio / Video Object (PA / V) and Secondary Audio / Video Object (Secondary Audio /). Video Object; Sub-A / V), Chapter 2 (Ch 2) is represented by the main audio / video object, and Chapter 3 (Ch 3) is represented by the main audio / video. A Substitute Audio / Video Object (Substitute-A / V) that replaces an object and an audio / video stream within the main audio / video object. Title 3 is divided into two chapters, and chapter 1 (Ch 1) is the main audio / video object (PA / V), the sub audio / video object (Sub-A / V), and the interactive subtitle object ( Subtitle) and the execution of the interactive object (Interactive), and chapter 2 (Ch 2) is represented by the execution of the main audio / video object (PA / V) and the interactive object (Interactive). Title 4 consists of one chapter Ch 1, which is represented by the execution of the main audio / video object P-A / V. Title 1 and Title 3 correspond to interactive titles, and Title 2 and Title 4 correspond to movie titles.

In relation to this, the main audio / video object in the present invention refers to one or more time maps and main audio streams and / or main video used to convert the presentation time of the presentation object into the address of the presentation unit in each presentation object. An expression object containing a stream. The main audio / video object may comprise sub audio and / or video played with the main audio and / or video stream. The sub audio and / or video stream may not be included in the main audio / video object but may be provided as a separate sub audio / video object.

Also, in the present invention, a sub audio / video object is a representation object including one or more timemaps and an audio and / or video stream to be played along with the main audio and / or video stream in the main audio / video object.

In the present invention, the alternative audio / video object is also a representation object including one or more timemaps and audio and / or video streams that replace the main audio and / or video streams in the main audio / video object.

In this regard, the interactive object of the present invention is an expression object including an interactive function to be implemented during the playback of a title, and the interactive object includes an initialization information file for implementing the interactive function. The initialization information file includes a representation information file representing a style, a timing, a layout, and the like in which the interactive object is reproduced on a screen, and a user input event or optical recording of a reproduction sequence, graphics, etc. of the representation object on the screen. It consists of a control file used for controlling by a playback event or the like of the playback apparatus 10. Hereinafter, the initialization information file will be referred to as a manifest file, the expression information file as a markup file, and the control file as a script file. The manifest file, markup file, and script file are described by a specific markup language (e.g., 'extensible mark up language') that can be decoded by the optical recording / reproducing apparatus 10. and recorded on a recording medium or provided to the optical recording / reproducing apparatus 10 from an external server.

For example, the interactive object of the present invention is an interactive navigation such as a manifest file, a markup file (s) that includes content / style / timing / layout information, and a script file (s). Element, and interactive playback elements such as image file (s), effect audio file (s), font file (s), and the like. The interactive navigation and interactive playback elements can be organized into interactive objects by one manifest file and can be located in one or more resource files. The resource file may be stored on a record carrier, located on a storage or external server, or multiplexed onto a video / audio object on the record carrier.

In this regard, in the present invention, navigation elements such as markup files, script files, etc., which constitute an interactive object, various image files (image file (s)), effect audio files (s), font files ( Interactive playback elements such as font file (s)) are collectively called interactive data.

In addition, the interactive object may include an interactive subtitle object synchronized with video as a subset. The interactive subtitle object may include a markup file, a font file, and an image file for a subtitle including a manifest file, content, style, timing, and layout information for the subtitle. The interactive subtitle may replace a subpicture object displayed on the subpicture plane.

In relation to this, in the present invention, the term "plane" refers to a conceptual model for explaining an overlaying process of expression objects displayed on a screen. The plane model makes it possible to independently control a main video object, a sub video object, a sub picture or an interactive subtitle object, and an interactive object.

Referring back to FIG. 5, the playback order of each chapter constituting the title 1, 2, 3 or 4 and the playback information between the respective expression objects are provided by a playlist. The playlist provides reproduction information between the playback objects by mapping the presentation objects onto a title timeline allocated to each title. The playlist may be recorded on the recording medium in the form of a playlist file or provided to the optical recording / playback apparatus 10 from an external server. In this regard, the playlist file can be described by a specific markup language (e.g., 'extensible mark up language') which can be decoded by the optical record / playback apparatus 10. have. The titles 1 to 4 may be referred to as one title set managed by the playlist file.

In relation to FIG. 5, one playlist is provided for four titles as an example, but one playlist may be provided for each title.

Specifically, taking the title 1 as an example, the optical recording / reproducing apparatus 10 uses the location information (e.g., URI) described in the playlist to express the interactive object constituting the title 1. Read the manifest file to start the execution of the initial markup file indicated in the manifest file.

As another example, in order to reproduce the chapter 1 of the title 2, the optical recording / reproducing apparatus 10 uses the positional information described in the playlist to assign the main and sub audio / video objects constituting the chapter 1 to each other. The included timemap is read and the primary and sub audio / video streams referenced by the timemap are accessed and played.

As another example, in order to reproduce chapter 1 of the title 3, the optical recording / reproducing apparatus uses the position information described in the playlist to generate a manifest file of an interactive object constituting the chapter 1, an interactive subtitle object. Read the time map included in the manifest file for the subtitle and the main and sub audio / video objects, execute the initial markup files indicated in the manifest file and the manifest file for the subtitle, Access and play sub audio / video streams.

As another example, in order to reproduce chapter 1 of the title 4, the optical recording / reproducing apparatus 10 is included in the main audio / video object constituting the chapter 1 by using the position information described in the playlist. Read the timemap and access and play the main audio and / or video stream indicated by the timemap.

Referring to FIG. 2 described above, the level B recording / playback apparatus 10b includes a recording medium recording only an interactive title (hereinafter, referred to as a first type recording medium) and a recording medium recording only a movie title (hereinafter referred to as a second type recording medium). In addition, the recording medium (hereinafter, the third type recording medium) in which both the interactive title and the movie title are recorded can be played back. In other words, all of Titles 1 to 4 can be played back. However, the level A recording / reproducing apparatus 10a can reproduce the second type recording medium, but since the interactive module for processing data related to the interactive characteristics of the interactive title is not provided, the level A recording and playback device 10a can reproduce the first type and the third type recording medium. If not, it can happen. In the present invention, the optical recording / reproducing apparatus enables recording or reproducing of titles using A / V objects such as audio and video, regardless of the type of title (s) recorded on the recording medium.

FIG. 6 shows an example of reproduction of interactive content by the level B recording / playback apparatus 10b. Among the expression objects, the expression objects provided to the user through the screen are represented in respective planes, and their sizes are shown. And the position is adjusted to be combined into one image, and output on the screen.

Referring to FIG. 6, a sub video stream of sub audio / video objects is displayed on the sub video plane 110, and a sub video stream of main audio / video objects is displayed on the main video plane 120, and the sub picture data is displayed as sub picture data. The configured subtitle is displayed on the sub picture plane 130 and the interactive object is displayed on the interactive graphic plane 140. The controller adjusts the size and / or position of the sub video plane, the main video plane 120, the sub picture plane 130, and the interactive graphic plane 140, and outputs the image to the screen in the form of one image 150. .

In relation to the main video object, the sub video object and the subtitle object, the interactive object may be output as a single image 150 together with the interactive object. Information for specifying a size and position in the interactive plane 140, that is, information for specifying a layout is included.

Interactive objects provide graphical image (s) on the graphics and subpicture planes that overlie the main video and sub video planes, while providing interaction between the user and playback of A / V objects. Graphic images and text images included in the interactive object may also display features of titles, chapters, A / V objects, and the like. Therefore, the user can set the selection and end of the title to be played, the playback order between the titles, and the like by using the interactive object displayed on the screen, and can check the characteristics or attributes of the title, chapter or A / V object. have.

In this regard, the level A recording / playback apparatus 10a does not have an interactive module and thus cannot execute the interactive object. The present invention enables the interactive content to be played back, except for the interactive object, so that an A / V object of the interactive content can be provided to the user without a high speed processor, a large memory, and a complex program.

FIG. 7 illustrates an example of reproduction of interactive content by the optical recording / reproducing apparatus of the present invention. Among the expression objects described in FIG. 6, the interactive object is not executed and is not displayed on the interactive graphic plane 140. In the case of the level A recording and reproducing apparatus 10a, the interactive graphic plane 140 may not be provided.

In addition, even if the resources used by the interactive object are reproduced to display the interactive object in the interactive graphic graphic 140, the level A recording / reproducing apparatus 10a includes an interactive module for processing search information included in the interactive object. 15) There is no. Accordingly, the level A recording and reproducing apparatus 10a cannot combine the sub video, main video, and subtitle objects with the interactive graphic plane 140.

In order to provide an A / V object to a user, the level A recording / reproducing apparatus 10a of the present invention includes a sub video plane 110, a main video plane 120, and a sub picture plane 130 without executing an interactive object. Only the expression objects displayed on the screen are output as one image 160 on the screen. In some cases, only the main video may be played without the sub video, or the sub video may not be output on the screen even if the main video is played.

In relation to this, since the level A recording and reproducing apparatus 10a cannot execute the interactive object, there is a problem in that the menu provided through the interactive object cannot be reproduced. As a result, a user may not be able to select a menu, and thus a title in the recording medium may not be reproduced. Accordingly, the present invention allows the optical recording and reproducing apparatus to create a menu using an A / V object and provide the generated menu to a user. The optical recording / reproducing apparatus may output the generated menu on a screen in the form of a graphical user interface (GUI) so that a user can select content to be reproduced. Hereinafter, a menu created by the optical recording dispute apparatus for reproducing an expression object except for an interactive object will be described as an apparatus menu. Such menus generated by the optical recording and reproducing apparatus are also called player menus, mimic menus, simple menus, and the like.

In addition, in the case of interactive content, the reproduction order between titles in a recording medium can be defined by the interactive function included in the interactive object. However, since the level A recording and reproducing apparatus 10a cannot execute the interactive object, in order for the level A recording and reproducing apparatus 10a to reproduce the title (s) in the recording medium, the playback order between the title (s) is in order. Determining algorithms need to be defined. The level A recording / playback apparatus 10a uses the algorithm to define a playback order between titles in the recording medium to automatically play back, or to generate a device menu so that a user can select a title to be played. Interface (GUI) format can be displayed on the screen.

For example, the algorithm may be defined to set the title having the longest playback time among the titles on the recording medium as the main movie title. However, if the title determined as the main movie title by the algorithm is an empty title that does not include an A / V object or consists of black video, the empty title is set as the main movie title. The algorithm can be defined so as not to. Black video refers to an A / V object used as a background of a title composed of interactive objects. Referring to FIG. 5, Title 1 consisting only of interactive objects corresponds to a blank title. In addition, when a plurality of titles having the same playback time exist, the algorithm may be defined to set the title located at the forefront as the main movie title.

In this regard, the algorithm used to determine the playback order between titles may be defined in various ways according to the optical recording / reproducing apparatus, but the user may have the same experience with other optical recording / reproducing apparatuses for the same interactive content. It would be desirable to have a uniform algorithm.

8 to 11 show embodiments of menus generated by the optical recording and reproducing apparatus of the present invention. Hereinafter, the recording medium includes four titles (Title 1 to 4), title 1 includes only interactive objects, title 2 includes only A / V objects, has the longest playback time, and title 3 contains A. The case where the title including the / V object and the interactive object and the title 4 are the titles containing only the A / V object will be described as an example.

The optical recording and reproducing apparatus creates a device menu for displaying title (s) to be reproduced for reproduction of titles in the recording medium. Whether or not all the titles in the recording medium are to be displayed in the device menu, the display method thereof, the display order of the titles in the device menu, and the like are questionable.

FIG. 8 shows an embodiment in which title (s) in a recording medium are displayed on a menu created by the optical recording / reproducing apparatus of the present invention, so that only the title determined as the main movie title in the device menu can be distinguished from other titles. The case is marked.

In the title list on the device menu, Title 1, which is an interactive title, Title 2, which is a movie title, Title 3, which is an interactive title, and Title 4, which are a movie title, are displayed. If the algorithm is defined to set the title having the longest playback time as the main movie, the title 2 of the longest playback time among the titles is determined as the main movie. Referring to FIG. 8, a title of "Main Movie" or "Longest Title" may be displayed on Title 2 on the device menu. Alternatively, it may be possible to adjust the order of the title list so that the title determined as the main movie title is located in Title 1 on the device menu.

Since the high density recording medium used in the present invention can store high capacity data, a plurality of titles can be recorded. In addition, in some cases, a content provider arbitrarily defines data without an A / V object as a title for convenience of content production. Therefore, depending on the capacity of the recording medium and the size of the title, dozens of titles may be recorded on one recording medium. In this case, when displaying descriptions of all titles defined as titles on the recording medium in the device menu, the screen configuration becomes too complicated. Therefore, according to the present invention shown in the embodiment of FIG. 8, when only the information to be importantly provided to the user is displayed on the device menu, the screen configuration can be simplified and the user can be easily selected by the important information.

In this regard, in the case of Title1, since it is composed only of interactive objects without A / V objects, the actual audio and / or video data desired by the user is not output even if Title1 is reproduced. The user may not want to play a blank title, such as Title1, where no substantial audio and / or video data is output. Therefore, the optical recording and reproducing apparatus of the present invention can put information on the empty title in the device menu so that the user can efficiently determine the title to be reproduced.

9 to 11 illustrate embodiments in which titles in the recording medium are displayed in the device menu when the recording medium includes a blank title.

In this regard, which title in the recording medium is a blank title may be determined by calculating a data amount per picture of a playlist or a corresponding title. Since the playlist includes mapping information of the expression objects constituting the title, the optical recording / reproducing apparatus can analyze the playlist to determine the title without the A / V object as the empty title. In addition, when the black screen is compressed, the amount of data per picture is reduced, so that the optical recording and reproducing apparatus converts the video data in the A / V object constituting the title into high definition, thereby significantly reducing the amount of data per picture. The ball title may be determined as the ball title.

Referring to FIG. 9, the optical recording and reproducing apparatus of the present invention lists Title1, which is a blank title, together with other titles in a title list on the device menu, and when the user selects playback of the Title1, the title list in the title list. It may indicate that Title1 does not contain substantial audio and / or video data, such as "There are no A / V data" near the Title1 or on the black screen.

In this regard, another interactive title, Title3, will not be played as an interactive object, but will not be determined as an empty title since it contains the actual A / V object to be played.

Referring to Fig. 10, the optical recording and reproducing apparatus of the present invention lists Title1, which is an empty title, together with other titles on the title list on the device menu, and displays Title1 separately from other titles. For example, titles 2 to 3 may be displayed on the title list in black bold, and title 1 may be displayed in gray. When the user selects playback of the title 1, the optical recording / reproducing apparatus may output a black screen without any display, or display the "prohibited display" of the title 1 on the screen and do not play the title. .

Referring to Fig. 11, the optical recording / reproducing apparatus of the present invention does not list Title 1 which is a blank title on the title list on the device menu. That is, only the titles 2 to 4 including actual A / V objects will be listed in the title list.

FIG. 12 shows an example in which the interactive content is reproduced in the optical recording and reproducing apparatus of the present invention, which shows the case where the optical recording and reproducing apparatus is the level A recording and reproducing apparatus 10a described above in FIG.

When the recording medium on which the interactive content is recorded is loaded into the level A recording and reproducing apparatus 10a, the level A recording and reproducing apparatus 10a is also referred to as the "First Play Title" among the titles recorded on the recording medium. ) Is reproduced (S101). If the first playback title is a movie title composed of A / V objects, the level A recording / playback apparatus 10a may play the first playback title even if the user does not select the first playback title by the device menu. However, when the first playback title is an interactive title, resources used by A / V objects among the expression objects constituting the first playback title will be played and output on the screen 20.

In this regard, if there is legal data that must be legally provided to the user in connection with the reproduction of the recording medium, the legal data may be displayed on the screen together with or after the end of the first playback title. It may be (S102).

When the reproduction of the first reproduced title is completed, the level A recording / playback apparatus 10a determines a main movie title determined using an algorithm used for determining a main movie title among the titles in the recording medium, determining the playback order between titles, and the like. Can be reproduced (S103). When the main movie title is an interactive title, the level A recording / playback apparatus 10a executes only A / V objects. That is, the resource constituting the A / V object is reproduced and output to the screen 20.

When the reproduction of the main movie title is completed, the level A recording / playback apparatus 10a may output a device menu generated by using a playlist and / or an A / V object in a recording medium to the screen 20. There is (S104). The device menu may be automatically displayed on the screen 20 when the main movie title is played, or may be output on the screen 20 when the user presses a menu key of an input device such as a remote controller or a keyboard. .

When the user selects a title to be reproduced through the device menu, the level A recording and reproducing apparatus 10a is one of data constituting the title selected by the user. The resources constituting the A / V object among the expression objects are reproduced and output to the screen 20 (S105).

12 is only an example for explaining the use of the device menu in the present invention. Therefore, the device menu may be provided to the user even before the first playback title is played or before the main movie title is played.

Regarding the present invention, the present invention has been described with reference to the reproduction of a title recorded on a recording medium. However, the title stored in the storage is reproduced, the title downloaded from the server, or the title and / or storage recorded on the recording medium. Note that the present invention can be similarly applied to a case where a stored title and a title downloaded from a server are mixed and played together.

In addition, not only title information but also scene or chapter information of a title, subtitle information, audio information, and the like may be displayed in the device menu generated by the optical recording / reproducing apparatus. It will be apparent that the present invention described above may be equally applied to the display of the scene or chapter information, subtitle information, and audio information.

The present invention is not limited to the above-described embodiments, and can be modified by those skilled in the art as can be seen from the appended claims, and such modifications are within the scope of the present invention. .

According to the data reproducing method and the data reproducing apparatus according to the present invention, the interactive content can be effectively reproduced even in a device having a limited processor and a memory. Accordingly, the content provider may provide more various contents to the user, and the user may experience the interactive content on various devices.

Claims (24)

In the case where the content unit plays back one or more recorded recording media, Creating a menu listing at least one of the content units, without executing an interactive application; And Playing the content unit selected from the menu. The method of claim 1, And the content unit is a title or chapter. The method of claim 1, Generating the menu, Determining a main content unit among the content units recorded on the recording medium. The method of claim 3, wherein And the main content unit is not an empty content unit, which is devoid of audio and video data or composed of black video. The method of claim 3, wherein And the main content unit is displayed separately from other content units in the menu. The method of claim 3, wherein And the longest content unit having the longest playback time among the content units recorded on the recording medium is determined as the main content unit. The method of claim 1, Generating the menu, And determining an empty content unit of the content unit recorded on the recording medium, wherein audio and video data are absent or composed of black video. The method of claim 7, wherein And the empty content unit without the audio and video data is identified from management information for the content unit recorded on the recording medium. The method of claim 7, wherein And the empty content unit consisting of the black video is identified from the characteristic that the amount of data per picture is reduced when the black video is compressed. The method of claim 7, wherein And the empty content unit is displayed separately from other content units in the menu. The method of claim 7, wherein And the empty content unit is not listed in the menu. The method of claim 7, wherein And the blank content unit is prohibited from being selected or not played even if selected. In the case where the content unit plays back one or more recorded recording media, A reproducing unit for reproducing the data recorded on the recording medium; And And a control unit for generating a menu listing the content units recorded on the recording medium without executing the interactive object, and controlling the playback unit to play back the content unit selected from the menu. The method of claim 13, And the content unit is a title or chapter. The method of claim 13, And the controller determines a main content unit among the content units recorded on the recording medium and generates the menu. The method of claim 15, And the controller is configured to determine, as the main content unit, a content unit other than an empty content unit, which is free of audio and video data or composed of black video. The method of claim 15, And the control unit generates the menu so that the main content unit is displayed separately from other content units in the menu. The method of claim 15, And the controller determines that the longest content unit having the longest playback time among the content units recorded on the recording medium is the main content unit. The method of claim 13, And the control unit determines a blank content unit, which is free of audio and video data or composed of black video, among the content units recorded on the recording medium. The method of claim 19, And the controller identifies the empty content unit without the audio and video data based on the management information of the content unit recorded on the recording medium. The method of claim 15, And the empty content unit consisting of the black video is identified from a characteristic that the amount of data per picture is reduced when the black video is compressed. The method of claim 19, And the controller generates the menu so that the empty content unit is displayed separately from other content units in the menu. The method of claim 19, And the controller generates the menu so that the empty content unit is not listed. The method of claim 19, And the control unit controls the playback unit such that the empty content unit is not played even if the empty content unit is selected in the menu.

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