RU2369923C1 - Information carrier, having structure of multiangle data, and device for this carrier - Google Patents

Abstract

FIELD: information technologies.

SUBSTANCE: information carrier, which stores structure of data that maintains multiple angles. Multiple angles include AV-flows of clip for according data of moving picture multiangle data angle. As additional information for each AV-flow of clip, clip information comprising information of transition points for transition to a different angle is recorded into memory area. Each of AV-flows of clip may be recorded in contiguous area of memory and separated into smaller alternated elements, which are alternated with elements of other AV-flows of clip.

EFFECT: elimination of limit for location for storage of multiangle data and provision of possibility of arbitrary access to multiangle data.

2 cl, 22 dwg

Description

FIELD OF THE INVENTION

Devices and methods consistent with the present invention relate to a storage medium and multi-view data structures.

BACKGROUND OF THE INVENTION

Multifunctional digital discs (DVDs), for example, are storage media configured to store multi-angle data. Multi-angle data is recorded on DVD using an interleaving method in which data for recording is divided into predefined modules and in turn is recorded. Information for searching and reproducing interleaved blocks is recorded in the movie bit streams.

Figure 1 shows the data structure of a standard DVD. 1, the DVD memory area includes a video management (manager) (VMG) area in which title information (largest DVD-Video disc layout items) and title menu information, and several video title set (VTS) areas are stored, which stores several movie files. Basically, a VMG area includes two or three files, and each VTS area includes from three to twelve files. The VTS area may include information for the title as a playback module and a set of video objects (VOBS) as movie information. One VTS can store several titles.

Figure 2 shows the data structure of the VMG region of figure 1. The VMG area includes a Video Manager Information Area (VMGI), which stores additional information related to the VMG area, a VOBS area in which video objects for the menu are stored, and a VMGI backup area. Each region exists as a single file, and in some cases the VOBS region may be omitted.

Figure 3 shows the data structure of the VTS region of figure 1. The VTS area includes Video Title Set Information (VTSI), VOBS as movie image data for a menu image, VOBS as movie information for a video title set, and VTSI backup data. Selectively, VOBS may be included in the VTS area to display a menu image. Each VOBS is divided into video objects (VOB) and cells as recording modules. One VOB contains several cells. The smallest writer can be defined as a cell.

In DVD, each level is a playback module, and a title is provided at the highest level. A title is associated with one or more Software Chains (PGCs). The PGC to be played first of several PGCs is called Input PGC. A title can contain only one PGC, i.e. an Input PGC. A title may contain several PGCs. In such a case, where playback of one PGC is completed, another PGC of several PGCs can be selected and played, and information regarding the playback sequence of the PGC can be stored as a command in the DVD. Controlling such a playback sequence can be defined as Navigation. The command determining the playback sequence may be stored in the Software Chain Information (PGCI).

Figure 4 shows the data structure of a PGC DVD. 4, a PGC is stored as an information structure, such as a PGCI. PGCI contains a precommand that stores a navigation command, a postcommand, and a certain amount of program information. A precommand is a command executed before playing the corresponding PGC, and a postcommand is a command executed after playing the corresponding PGC. Each program is composed of a certain amount of cell information. These cells are connected on a one-to-one basis with the cells in the VOB as recording modules. Each cell has a cell command that is executed after the cell plays back. PGCI information describes PGC as a hierarchical writer. PGCI information has an information structure for linking a cell as a lower playback unit to a cell as a lower recording unit. In PGC, several cells as recording modules are interconnected, and several cells form one block of views.

Figure 5 shows a possible variant of the block views, containing several cells placed in parallel. During playback, one cell in the angle block is selected and played. The multiple cells that make up the angle block have the same playback time, and each cell corresponds to the angle data in the angle block, and the angle data is divided into interleaved elements (ILVU) as predefined elements that are interleaved with each other and recorded in VOB and Cell objects as recording modules.

Figure 6 shows the objects VOB and Cells as recording modules, in the case of not including multi-view data. 6, each VOB is stored in a continuous block of continuous recording space of a storage medium. In the case of multi-view data, as shown in Fig. 7, VOB objects, each of which corresponds to the view data, and Cells as their lower elements, are recorded as an interleaved block in which ILVU elements are interleaved. Accordingly, data from one view is not stored inside the continuous recording area, and data from each view is interleaved and recorded in a predetermined order.

7 shows a diagram in which the data of two views are interleaved and recorded in order. As shown in FIG. 7, each ILVU should have the same playback time. The size of the length of the data record may vary in accordance with the degree of data compression. To play interleaved data, the ILVU data module must be switched in both cases where data from one view is reproduced and where data from one view is switched to data from another view, which are then reproduced. For example, to reproduce data corresponding to aspect 1, it is required to find and reproduce only ILVU data corresponding to aspect 1. To switch to the data of another angle, when reproducing the angle data, a transition must be made to a specific location corresponding to the data of the changed angle. At this time, the transition location is also determined based on the ILVU module.

Location information for the ILVU module of the corresponding angle and for the other ILVU module of the other angle associated with the corresponding angle is recorded in the movie bit streams. As shown in FIG. 8, VOBS as a movie bitstream has a layer structure and the lowest layer contains packets (PCK) such as NV_PCK, A_PCK, V_PCK and SP_PCK. The NV_PCK is defined as a navigation package, and as shown in FIG. 9, it stores the size and location information SML_AGL_Cn_DSTA of the ILVU data, for a maximum of nine angles supported by the DVD. This information is ILVU data retrieval information for view n associated with the currently playing ILVU data. After reproducing the current ILVU data, using this information, the angle can be switched to the desired angle to reproduce the ILVU data for the desired angle. Such ILVU data location information is multiplexed and recorded in the bit streams of the interleaved and recorded motion picture data.

Figure 10 illustrates the transition to the selected angles in the playback order. 10, in order to perform seamless switching for reproducing motion pictures where an angle switching command is received from a user at a specific location, a transition to the desired angle ILVU data is generated after the current ILUV data is reproduced, and ILVU data of the desired angle is reproduced.

The following describes the standard DVD authoring process for multi-view data. Initially, images taken from various angles are respectively compressed and bit streams having the same playback length are created. The bit streams are interleaved, and each bit stream includes information that may relate to different angles so as to provide the ability to switch the angle during playback.

The information related to interleaving is multiplexed and recorded in the motion picture data stream, and as a result is extracted. Basically, the operation of searching and reproducing interleaved blocks belonging to a certain angle, or switching, and after that searching and reproducing interleaved blocks corresponding to another angle, is processed by the processor of the reproducing apparatus by software. The specified software accesses the interleaved block currently being played back, obtains location information regarding the desired interleaved block for playback, and transmits the obtained location information to the data reader. Also, compressed and encoded movie image data is processed in the movie demultiplexer. Accordingly, a process is required to extract location information from motion picture data and transmit location information to a processor.

In addition, in the case where multi-view data is divided into predefined elements, interleaved, and stored, even in the case where data of one view is sequentially reproduced, the playback location is continuously changed for sequential reading of the data, since the corresponding data is not recorded sequentially. Also, there is a problem in that although substantial time may be required to change the location, for example, for optical disks or hard disks, the bit rate of the compressed bit streams to compensate for this time is limited.

SUMMARY OF THE INVENTION

Accordingly, an aspect of the present invention is the provision of a storage medium having a data structure capable of eliminating a location constraint for storing multi-angle data and allowing random access to multi-angle data, as well as a method and apparatus for recording and / or reproducing for this medium.

Another aspect of the present invention is the provision of a storage medium containing information on transition points for sequentially reproducing and switching angles of multi-angle data in a memory area separate from the storage area of movie image data, and a method and apparatus for recording and / or reproducing for this medium.

Another aspect of the present invention is the provision of a storage medium containing information on transition points for sequentially reproducing and switching multi-angle data angles, integrated with random access information provided by the motion picture data, and a method and apparatus for recording and / or reproducing for this medium.

Additional aspects and / or advantages of the present invention will be set forth in part in the description which follows, and in part will be apparent from the description, or may be learned by practice of the invention.

In order to achieve the aforementioned and / or other aspects of the present invention, there is provided a storage medium for storing multi-angle film image data therein containing film image data for various angles, interleaved relative to each other, and the film image data for each angle have several access points through which are connected and sequentially movie data for a different perspective is reproduced, and information regarding access points provided in an area separate from the interleaving area nnyh moving picture data.

Access points may correspond to the boundaries of the interleaved elements of the interleaved motion picture data.

The medium may further comprise characteristic information corresponding to the motion picture data for various angles, while the characteristic information contains information regarding access points.

To achieve the aforementioned and / or other aspects of the present invention, there is provided another storage medium for storing multi-angle motion picture data therein, comprising motion picture data for different angles, separated and interleaved relative to each other in interleaved elements, and access information from an interleaved movie image element for a view to the next interleaved movie data item for this view and / or to access from the interleaved movie data item for a view to the corresponding next interleaved movie data element for another view provided in a region separate from the region of the interleaved movie data.

The medium may further comprise characteristic information corresponding to the motion picture data for various angles, wherein the characteristic information contains information regarding access points.

To achieve the aforementioned and / or other aspects of the present invention, there is provided yet another storage medium for storing multi-angle film image data corresponding to a film image containing audio-video (AV) clip streams corresponding to film image data for different angles that are interleaved relative to each other and information regarding transition points of the clip AV streams provided in a region separate from the region of the interleaved clip AV streams, the transition points being access points through the cat Cinema images are reproduced from one angle to another.

Jump points may correspond to boundaries defining elements of interleaved AV stream of a clip.

The medium may further comprise some set of clip information corresponding to the AV streams of the clip, which contains information regarding transition points. Each clip information may comprise an entry point correspondence diagram containing information regarding entry points of a corresponding one of the clip AV streams for random access and information regarding whether each of the entry points is a transition point.

The medium may further comprise playlist information comprising at least one playitem that corresponds to clip AV streams.

The medium may further comprise playlist information containing at least one playitem having information of the angle block, the information of the angle block contains information as to whether the play point is a play point for the movie data for other angles. The information of the angle block may further comprise information regarding the number of different angles for the movie image.

To achieve the aforementioned and / or other aspects of the present invention, there is provided yet another storage medium for storing multi-angle film image data corresponding to a film image, comprising an audio-video (AV) clip stream corresponding to film image data for different angles that are interleaved relative to each other, and information regarding the transition points of the AV stream of the clip provided in a region separate from the region of the AV stream of the clip, the transition points being access points through which the movie image A view is reproduced from one perspective to another.

The medium may further comprise clip information corresponding to the AV stream of the clip containing information regarding transition points. The information regarding the transition points may contain location information corresponding to a start location for each transition point for the AV stream of the clip.

To achieve the aforementioned and / or other aspects of the present invention, there is provided yet another storage medium for storing multi-angle film image data corresponding to a film image, comprising audio-video (AV) clip streams corresponding to film image data for different angles that are interleaved relative to each other, and some combination clip information corresponding to clip AV streams provided in a region separate from the region of the interleaved clip AV streams, each clip information containing there is a correspondence scheme of entry points containing information on entry points for random access and information on whether each of the entry points is a transition point, and the transition point is an access point through which a movie image is reproduced from one perspective to another perspective.

In order to achieve the aforementioned and / or other aspects of the present invention, there is provided an apparatus for recording multi-angle motion picture data onto a storage medium, the apparatus comprising a recording module that records motion picture data for various angles interspersed with respect to each other on the storage medium, and film image data for each angle have several access points through which movie data for a different angle is connected and sequentially reproduced, and a controller, which controls a recording module for recording information regarding access points in an area of the storage medium separate from the area of the interleaved movie image data.

The controller may control a recording module for recording information regarding access points as part of the characteristic information corresponding to the motion picture data for various angles.

To achieve the aforementioned and / or other aspects of the present invention, there is provided another apparatus for recording multi-angle motion picture data onto a storage medium, the apparatus includes a recording module that records motion picture data for various angles on a storage medium, separated and interleaved relative to each other in interleaved elements, and a controller which controls the recording module for recording information for access from the interleaved movie data item for the view to the next the interleaved movie data element for this view and / or to access from the interleaved movie data element for the view to the corresponding next interleaved movie data element for another view, to the storage medium area separate from the interleaved movie data area.

To achieve the aforementioned and / or other aspects of the present invention, there is provided yet another apparatus for recording multi-angle motion picture data corresponding to a motion picture onto a storage medium, the apparatus comprising a recording module that records clip streams corresponding to the motion picture data for various angles on the storage medium AV, Clip AV streams are interleaved relative to each other, and a controller that controls a recording module for recording information regarding transition points of AV p Clip currents to the recording medium, separate from the region of the interleaved clip AV streams, wherein the transition points are access points through which the motion picture is reproduced from one angle to another angle.

The controller may control a recording module for recording information regarding transition points as part of the transition information corresponding to the AV streams of the clip.

To achieve the aforementioned and / or other aspects of the present invention, there is provided yet another apparatus for recording multi-angle motion picture data corresponding to a motion picture onto a storage medium, the apparatus comprising a recording module that records a clip stream corresponding to the motion picture data for various angles interleaved on the storage medium AV relative to each other, and a controller that controls a recording module for recording information regarding transition points of the clip AV stream in the region a storage medium separate from the region of the AV stream of the clip, the transition points being access points through which the movie image is played from one angle to another angle.

To achieve the aforementioned and / or other aspects of the present invention, there is provided yet another apparatus for recording multi-angle motion picture data corresponding to a motion picture onto a storage medium, the apparatus comprising a recording module that records clip streams corresponding to the motion picture data for various angles on the storage medium AV, The AV streams of the clip are interleaved relative to each other, and the controller that controls the recording module to record some set of clip information, with corresponding to the AV streams of the clip in the region of the information medium separate from the region of interleaved AV streams of the clip, wherein each clip information contains a matching pattern of entry points containing information regarding entry points for random access and information about whether each of the entry points is a transition point, when this transition point is the access point through which the movie image is played from one angle to another angle.

In order to achieve the aforementioned and / or other aspects of the present invention, there is provided a device for reproducing film image data from various information angles from a data carrier, the device comprising a reading module that reads image data from various information angles alternating with respect to each other, and film data for Each angle has several access points through which the cinema image data for another cancer is connected and sequentially ursa, and a playback module that reproduces the film image data for various angles in accordance with the information on access points provided in the area of the information medium separate from the region of the interleaved film image data.

To achieve the aforementioned and / or other aspects of the present invention, there is provided another device for reproducing film image data from various types of angles from an information carrier, the device comprising a reader module that reads image data from various types of angles from the information medium, separated and interleaved relative to each other, interleaved modules, and a playback module that reproduces the motion picture data for various angles in accordance with the information of the points d a stupa provided in the area of the information medium separate from the area of the interleaved movie image data, wherein the access point information contains information for access from the interleaved picture data module for the view to the next interleaved picture data module for that view and / or for access from the interleaved picture data module for view to the corresponding next interleaved module image data for another view.

To achieve the aforementioned and / or other aspects of the present invention, there is provided yet another apparatus for reproducing film image data from various information angles corresponding to a film image, the apparatus comprising a reader module that reads from the information medium AV clip streams corresponding to film image data for various angles moreover, the AV streams of the clip are interleaved relative to each other, and a playback module that reproduces the AV streams of the clip in accordance with relative deformations of transition points of the clip AV streams provided in the recording medium separate from the interleaved clip AV streams, wherein the transition points are access points through which the motion picture is reproduced from one angle to another angle.

To achieve the aforementioned and / or other aspects of the present invention, there is provided yet another apparatus for reproducing movie image data from a storage medium for various angles corresponding to a motion picture, the apparatus comprising a reader module that reads from an information storage medium an AV stream of a clip corresponding to motion picture data for various angles interleaved relative to each other, and a playback module that reproduces the AV stream of the clip in accordance with the information regarding about the transition points of the AV stream of the clip provided in the region of the storage medium separate from the region of the AV stream of the clip, the transition points being access points through which the movie image from one angle to another is reproduced.

To achieve the aforementioned and / or other aspects of the present invention, there is provided yet another apparatus for reproducing movie image data from various information angles corresponding to a movie image, the apparatus comprising a reader module that reads clip streams corresponding to movie image data from various information angles from the information medium moreover, the AV streams of the clip are interleaved relative to each other, and a playback module that reproduces the AV streams of the clip in accordance with with a set of clip information corresponding to the clip AV streams provided in the information carrier region separate from the clip interleaved AV stream region, each clip information comprising an entry point correspondence circuit containing information regarding entry points for random access and information about whether each from the entry points, the transition point, while the transition point is the access point through which the movie image is played from one angle to another angle.

To achieve the aforementioned and / or other aspects of the present invention, there is provided a method for recording multi-angle film image data onto a storage medium, the method comprising recording film image data for various angles interspersed with respect to each other, and the film image data for each angle has several access points through which are connected and sequentially reproducing motion picture data for a different perspective, and recording information regarding access points in the area of the information carrier Separate from the region of the interleaved motion picture data.

The recording of information regarding access points may comprise recording characteristic information corresponding to the motion picture data for various angles, the characteristic information containing information regarding access points.

To achieve the aforementioned and / or other aspects of the present invention, there is provided another method for recording multi-angle motion picture data onto a storage medium, the method comprising recording motion picture data for various angles that are divided and interleaved relative to each other in interleaved modules, and recording access point information in the area an information medium separate from the area of the interleaved movie image data, wherein the access point information comprises access information from the interleaved mode I'm moving picture data for an angle to the next interleaved unit of the moving picture data for the angle and / or to access data from an interleaved unit of a moving picture to view the corresponding next interleaved unit of moving picture data for another angle.

In order to achieve the aforementioned and / or other aspects of the present invention, there is provided yet another method for recording multi-angle motion picture data corresponding to a motion picture onto a storage medium, the method comprising recording audio-video clip streams corresponding to motion picture data for different angles interleaved relative to each other and recording information regarding the transition points of the AV streams of the clip in the area of the storage medium separate from the region of interleaved AV streams of the clip, and the transition points are yayutsya access point through which the motion picture is reproduced from one angle to another angle.

Recording information regarding the transition points may include recording information of the clip corresponding to the AV streams of the clip, wherein the clip information contains information regarding the transition points.

To achieve the aforementioned and / or other aspects of the present invention, there is provided yet another method for recording multi-angle motion picture data corresponding to a motion picture onto a storage medium, the method comprising recording an audio-video clip stream corresponding to motion picture data for different angles, interleaved relative to each other, and recording information regarding the transition points of the AV stream of the clip in the region of the storage medium separate from the region of the AV stream of the clip, the transition points being access points stupid through which the movie is reproduced from one angle to another angle.

In order to achieve the aforementioned and / or other aspects of the present invention, there is provided yet another method of recording multi-angle motion picture data corresponding to a motion picture onto a storage medium, the method comprising recording audio-video clip streams corresponding to motion picture data for different angles that are interleaved relative to each other, and recording a certain set of clip information corresponding to the AV streams of the clip in the region of the information medium separate from the region of interleaved AV streams of the clip, than each clip information comprises a circuit matching the entry point having information on entry points for random access and information on whether each of the entry transition point pixels, wherein the transition point is an access point through which the reproduced moving picture from one angle to another angle.

To achieve the aforementioned and / or other aspects of the present invention, there is provided a method of reproducing film image data from various information angles from a data carrier, the method comprising reading film image data from various information angles interleaved relative to each other, wherein the film image data for each angle has several points access through which film image data for a different perspective is connected and sequentially reproduced, and reproducing film image data views for various angles in accordance with information regarding access points provided in the area of the storage medium separate from the area of the interleaved movie image data.

To achieve the aforementioned and / or other aspects of the present invention, there is provided another method for reproducing film image data from various information angles from a data carrier, the method comprising reading film image data from various information angles that are divided and interleaved relative to each other in interleaving modules, and reproducing movie data for various angles in accordance with the information of the access point provided in the field of the storage medium separate from the part of the interleaved movie image data, wherein the access point information contains information for access from the interleaved movie data module for the view to the next interleaved movie data module for that view and / or for access from the interleaved movie data module for the view to the corresponding next interleaved movie data module for another foreshortening.

In order to achieve the aforementioned and / or other aspects of the present invention, there is provided yet another method for reproducing movie image data from various information angles corresponding to a movie image, the method comprising reading from an information medium AV clip data corresponding to movie data for various angles, wherein the AV stream is clip are interleaved relative to each other, and reproduction of the AV streams of the clip in accordance with the information regarding the transition points of the AV streams of the clip provided in the area of the storage medium separate from the region of the interleaved AV streams of the clip, the transition points being access points through which the movie image from one angle to another is reproduced.

In order to achieve the aforementioned and / or other aspects of the present invention, there is provided yet another method of reproducing film image data from various information angles corresponding to a film image from the information carrier, the method comprising reading from the information medium an AV stream of a clip corresponding to the film image data for various angles interleaved relative to each other , and reproduction of the AV stream of the clip in accordance with information regarding transition points of the AV stream of the clip provided in the media region of the formation, separate from the region of the AV stream of the clip, and the transition points are access points through which the movie is reproduced from one angle to another angle.

In order to achieve the aforementioned and / or other aspects of the present invention, there is provided yet another method for reproducing movie image data from various information angles corresponding to a movie image, the method comprising reading from an information medium AV clip data corresponding to movie data for various angles, wherein the AV stream is clip are interleaved relative to each other, and reproduction of the AV streams of the clip in accordance with a certain set of clip information corresponding to the AV streams to a linden provided in the region of the information carrier separate from the region of the interleaved AV streams of the clip, wherein each clip information contains a correspondence diagram of entry points containing information regarding entry points for random access and information about whether each entry point is a transition point, A transition is an access point through which a movie image is played from one angle to another.

LIST OF DRAWINGS FIGURES

These and / or other aspects and advantages of the invention will become apparent and more apparent from the following description of aspects of the present invention, taken in conjunction with the accompanying drawings.

1 is a block diagram illustrating a data structure of a DVD.

FIG. 2 is a block diagram illustrating the data structure of the VMG area of FIG. 1.

Figure 3 is a block diagram illustrating the data structure of the VTS area of figure 1.

4 is a block diagram illustrating a data structure of a PGC DVD.

5 is a block diagram illustrating the construction of a block of angles.

6 is a block diagram illustrating VOB and Cell objects as recording elements in the case of not including multi-view data.

7 is a block diagram illustrating the data of two views, interleaved and recorded in order.

8 is a block diagram illustrating a detailed level of a bitstream of a movie image.

9 is a block diagram illustrating an information structure for reproducing multi-angle data recorded in NV_PCK.

10 is a block diagram illustrating a transition operation with respect to selected angles in a playback order.

11 is a view showing a location relationship between transition elements, transition points, and entry points to illustrate an aspect of the present invention.

12 is a view for describing a method in which corresponding clip AV streams are recorded in a contiguous memory region to illustrate an aspect of the present invention.

13 is a view for describing a method in which corresponding clip AV streams are interleaved and recorded, to illustrate an aspect of the present invention.

FIG. 14 is a view for describing a correlation between the Play_Lists, the Play_Lists, the clip information and the AV streams of the clip, to illustrate an aspect of the present invention.

15 is a view for describing the relationship between transition operations and buffers for sequentially reproducing motion picture data, to illustrate an aspect of the present invention.

Fig. 16 is a view illustrating a possible construction of a Playlist having a multi-view structure according to an embodiment of the present invention.

17 is a block diagram illustrating a data structure for transition points according to an embodiment of the present invention.

18 is a block diagram illustrating a data structure for transition points, according to another embodiment of the present invention.

Fig. 19 is a block diagram illustrating a data structure for transition points, according to another embodiment of the present invention.

FIG. 20 is a block diagram illustrating possible information of the Playlist having the Play Points forming an angle block to illustrate an aspect of the present invention.

21 is a view illustrating a possible construction of the PlayLists as playback elements corresponding to respective views to illustrate an aspect of the present invention.

FIG. 22 is a block diagram illustrating a possible structure of additional view information represented by a corresponding PlayList to illustrate an aspect of the present invention.

DETAILED DESCRIPTION OF THE INVENTION

Embodiments of the present invention will now be described in detail, examples of which are illustrated in the accompanying drawings, in which like reference numerals refer to identical elements. Embodiments are described below to explain the present invention according to the drawings.

According to an embodiment of the present invention, there is provided a medium on which information regarding transition points for reproducing data of each angle and / or reproducing data of a different angle while reproducing the data of the original angle is recorded in a storage area separate from the multi-view film image area. According to an aspect of the present invention, motion picture data for a certain angle can be stored as an audio video (AV) stream of a clip, and AV streams of a clip for different angles can be separately divided into smaller interleaved blocks and interleaved with each other. According to another aspect, the data of each view can be recorded using a split recording method. The transition point information for searching movie data for each view is stored in a memory area separate from the movie data area. That is, information for accessing various angles is provided in a region separate from the region of the AV streams of the clip.

In order to switch from one view to another, according to an aspect of the present invention, the view data is classified into corresponding transition units (JPUs), wherein the start address of each transition unit is designated as a transition point, and information regarding the transition point is recorded as separate additional information. In the case where the data of one view is divided into interleaved blocks and interleaved with the data of another view, the interleaved blocks can act as transition elements.

To perform the operation described above, an embodiment of the present invention may comprise the following components:

(1) compressed and encoded audio-video (AV) video streams for the respective angles,

(2) a clip information file having information such as encoding attribute information for an AV stream of a clip,

(3) Play Item to set the time according to the playback interval between the IN-time and the OUT-time of the clip,

(4) a Play List containing one or more Play Points, and

(5) a map of the transition points where the locations of the transition points are stored.

Multi-view data refers to motion picture data containing several playback elements at a particular point in time. That is, multi-view data is motion picture data that was captured at a certain point in time simultaneously using multiple cameras, with each camera, for example, representing a view from a different angle. Sound data can be shared between each view or can be created in a special way for each view. Movie data that can be played on a single timeline is defined as multi-view data, and content created using multi-view data is defined as multi-view content.

Since the size of the movie data is very large, the movie data is compressed and stored / transmitted as compressed bit streams. By way of illustration, a clip may correspond to a recording module, and the PlayList and the PlayItem correspond to the playback modules. A clip can correspond to a cell as a recording module, for example a DVD, and PlayList and Play_Point correspond to the program and cell as DVD playback modules. An object containing the AV stream of the clip and the clip information may be defined as a clip, and the Playback Point may cover part of the clip or the entire clip. An additional description regarding this is given below.

An information recording medium according to an embodiment of the present invention stores AV streams, i.e., AV streams of a clip, as clips. The AV stream of a clip can be divided into interleaved blocks, which must be interleaved or recorded in a contiguous memory region. Each AV stream is compressed and recorded to reduce its size. To play back recorded AV streams of a clip, characteristic information of the compressed movie image data is required. For this reason, clip information is provided for each AV stream of a clip. The clip information contains audio and video attributes for each AV stream of the clip and the Entry Point mapping scheme, which stores entry point location information that allows random access to predefined intervals. In MPEG, which is used primarily as a movie compression standard, entry points correspond to the locations of I-images, on the basis of which intermediate images are compressed. For example, the Entry Points matching scheme is used in a time search to search for a predetermined time elapsed after the start of playback.

11 depicts the relationship of locations between jump modules, jump points, and entry points in an AV stream of a clip, to illustrate an aspect of the present invention. As shown in FIG. 11, where the AV stream of the clip is motion picture data corresponding to one-view data among multi-view data, the AV stream of the clip is divided into several transition elements. Each start point of each transition module is a transition point. The transition point can be the location of the AV stream of the clip, from which, during playback of the AV stream of the clip, the transition is performed outward to play another AV stream of the clip corresponding to the image data from a different angle, or the location of the AV stream of the clip to which the transition occurs during playback of the other AV stream clip. The transition point may be identical to the entry point. According to an aspect, since entry points occur, for example, approximately once every 0.5 second time interval, during seamless playback, all entry points may not be used as transition points. As shown in FIG. 11, one transition module may include several entry points. A transition point may indicate a first entry point from several entry points within the transition module.

12 depicts a data structure of several AV stream of a clip for multi-view data, wherein the AV stream of the clip is not interleaved, to illustrate an aspect of the present invention. As shown in FIG. 12, corresponding clip AV streams are recorded separately in a continuous recording area, where each clip AV stream corresponds to a different view. Clip AV streams have the same number of transition points and are virtually interconnected. That is, the AV streams of the clip are divided and recorded separately in the contiguous memory region, but are connected to each other at transition points as locations indicating an identical instant in playback time. Accordingly, in the case of playing back another AV stream of the clip during playback of the current AV stream of the clip, sequential playback can be performed by searching for the transition point of the next transition unit and reproducing the next transition module of the other AV stream of the clip after the playback of the transition module of the current AV stream of the clip is completed. 12 illustrates a sequence of reproductions where aspect 3 is reproduced, then perspective 1 is reproduced, and, subsequently, aspect m is reproduced. User input for switching views can be processed based on transition elements.

FIG. 13 depicts a data structure where corresponding AV streams of a clip are interleaved and recorded, to illustrate an aspect of the present invention. As shown in FIG. 13, where the AV stream of the clip, as data from one angle, is divided into smaller interleaved modules that need to be interleaved with data from other angles, the transition module acts as an interleaved module, and the start point of the interleaved module acts as a transition point and , simultaneously, as the first entry point of the corresponding interleaved module. A single interleaved module may contain multiple entry points for random access. According to FIG. 13, a transition can take place at some transition point even during playback of data from one angle. Where the AV streams of the clip are interleaved, an interleaved module corresponding to the current view is searched and played. The transition point information is used to reproduce, after reproducing the interleaved module, the next interleaved module belonging, for example, to data of the same angle, that is, to data of the current angle. The location of the next interleaved module is detected using transition point information. Where the user selects one view from another view, in other words, data from one view from data from another view, the transition point information is also used to find the location of the corresponding interleaved data module of one view.

Fig. 14 illustrates the correlation between the PlayList, the PlayItem, clip information and the AV stream of the clip. As shown, a clip refers to an AV stream of a clip and corresponding clip information for an AV stream of a clip. According to Fig. PlayList is a basic module for playback. On the storage medium according to the present invention, several PlayLists can be stored. A single PlayList may contain several related PlayLog Items. Playback can be used to indicate the start time of the playback and the end time of the clip. The location of the corresponding part (Play Point) in the actual AV stream of the clip can be detected using the clip information.

The storage medium according to the present invention, configured to provide random access, can perform sequential playback even in the discontinuous region of the memory by changing the playback locations at a predetermined time. This location change is defined as a "transition." Basically, an electronic storage medium, such as a memory, does not require a predetermined transition time, but a storage medium, such as an optical disk, relative to which the head moves to read data, requires significant time for the transition operation. Also, even in the case of reading and reproducing a continuous memory area, a component is required to compensate for the difference between the reading speed and the playback speed, where the reading speed of the movie image data from the storage medium is different from the playback speed of the read movie image data. As such a compensation component, a movie buffer may be used. A movie buffer having a predetermined size is prepared. The buffer is filled when data is read at a predetermined speed, and from then on, playback is performed. Can control the read speed of the data to prevent overflow or underrun of the movie buffer. When using the movie buffer, sequential playback is possible even where the movie data is recorded at a variable bit rate (VBR).

15 shows that the data stored in the movie buffer is reproduced in such a way that during the transition operation, the movie data is reproduced without interruption even where the transition module is played, and then a transition to the AV stream of the clip in which it is stored is generated movie data for another perspective. The jump operation is completed and playback of the next-view jump module begins before buffer underruns can occur. In the case of a playback device requiring a transition operation time, if it is assumed that the worst transition operation time is T_JUMP, the data reading speed is V_R, and the movie data playback speed is V_O, then the size of the transition module must satisfy the condition: Transition module size> V_R * V_O * T_JUMP / (V_R-V_O). Also, the buffer must satisfy at least the following size condition: Buffer size (B)> V_O * T_JUMP.

16 depicts a PlayList having a multi-view structure according to an embodiment of the present invention. As shown in Fig. 16, the Playback Points included in the Playlist is of a sequential structure, but as indicated by the second Playback Point in Fig. 16, in the case of multi-angle data, there are several clips forming the block of angles in the Playback Point. During playback, one of the AV streams of the clip (not shown) belonging to this angle block can be played. The AV streams of the clip, that is, the clips 2, 3, and 4 forming the angle block, may have identical playback time. Although not shown, according to an aspect of the present invention, the clips designated for the Playback Point forming the angle block include transition point information as additional information in a memory area separate from the motion picture data area, i.e., the AV stream of the clip. According to various aspects of the present invention, AV streams of a clip can be interleaved with each other, or separated and recorded in a contiguous memory region, that is, each of the AV streams of a clip is recorded continuously without interleaving with other AV streams of the clip. Where the AV streams of the clip are interleaved, each AV stream of the clip is divided into smaller elements, that is, interleaved elements, for interleaving with the split AV streams of the clip for other views. In the absence of interleaving, as shown in FIG. 16, clips 2, 3, 4 are recorded respectively in the continuous memory area. Accordingly, these clips are provided in the same way as Clips 1 and 5, which do not form an angle block.

17 depicts a data structure for providing transition points according to an embodiment of the present invention. 17, in the case in which the corresponding clip is a view clip, the transition point map information (JPMap) is created and included in the clip information in addition to the main information and the entry point map matching information (EPMAP). According to an embodiment of the present invention, transition point information is recorded in a memory area separate from the motion picture data area. According to an aspect, since the transition point information has a strong relationship with the motion picture data, the transition point information is included in the clip information. Clip information is additional information for an AV stream clip. According to various aspects of the present invention, motion picture data for various angles may be represented by an AV stream of a clip or several AV streams of a clip. Basic information may contain the following information:

- version-number: version of the clip information file,

- EPMap_start_adress (EPMap start address): relative byte number from the first byte of the clip information file indicating EPMap start address information,

- JPMap_start_address (start address of JPMap): the relative byte number from the first byte of the clip information file indicating the start address information of the JPMap, and if this value is zero, then the corresponding clip is not a clip for the view, and JPMap information does not exist, and

- ClipInfo (clip information): stores the attributes of the file of the AV stream of the clip related to the clip information file.

The EPMap information contains time and location information of the entry point providing random access. Basically, the playback time is the Representation Time defined in MPEG, and the location information is the number of bytes, the number of sectors, or, where the movie information is encoded in MPEG Transport Streams, the number of MPEG-TS packets. The JPMap information contains transition point information for virtually associating a clip with clips of other views, where the clip corresponds to a clip for the view data. According to an aspect, the number of transition points and corresponding information of the transition points are included in the information of the transition manager of the JPMap information. The transition point information contains information for finding the location of the transition point from the location of the beginning of the corresponding clip. In an aspect, this location information is the number of bytes or the number of sectors. According to another aspect, the location information may be the number of MPEG-TS packets where the information is encoded into MPEG Transport Streams.

Fig. 18 depicts a data structure for providing transition points according to another embodiment of the present invention. 18, transition point information is included in EPMap information. As described above, the transition point may be identical to the entry point as a random access point, where the movie is encoded by performing spatio-temporal compression, such as MPEG. Accordingly, information regarding the transition points can simply be recorded by inserting into the information regarding the entry point information regarding whether the corresponding entry point acts as a transition point. According to an aspect, each element of a plurality of clip information corresponding to clip AV streams may include EPMap information containing information regarding entry points and whether each entry point acts like a transition point.

19 shows a data structure for providing transition points, according to another embodiment of the present invention. According to Fig. 19, by collecting information of transition points for the clips forming the angle block, an additional information structure is created. That is, the number of clips forming one block of angles and the number of transition points existing in one clip are stored in the transition manager information. Then, the information for the transition points for each clip, that is, each AV stream of the clip, is stored sequentially in the transition manager information. Using this information structure, a search can be made for the corresponding location of each view, data of each view. According to another aspect, the information of the matching scheme of the transition points may correspond to a clip, that is, an AV stream of a clip corresponding to movie data for different angles, that is, various angles.

FIG. 20 shows the information of the Play_List containing the Play_ Point, forming a block of angles. According to FIG. 20, the Information of the Playback Point contains, in addition to the basic information of the Playback Point, information of the angle block. The information of the angle block contains information regarding whether the corresponding Playback Point constitutes the angle block. The information of the Playback Point constituting the angle block is recorded in order. During playback, one of the Playback Items that form the Playlist is played. Where the Playback Point is the Playback Point for multi-view movie image data, for switching, switching from one angle to another belonging to the same angle block can be provided. According to another aspect, FIG. 22 depicts a Play_List Information comprising Play_Pips and angle block information.

Fig. 21 depicts the construction of the PlayLists as playback units corresponding to respective views. According to FIG. 21, where one PlayList is one view, the PlayItem belonging to the PlayList does not form a block of views. As shown in FIG. 21, information regarding the view represented by the corresponding PlayList is recorded separately. The corresponding PlayList is reproduced according to the selection of the angle or the switching of the angle by the user.

As described above, the motion picture data for one view can be divided and interleaved with the split motion picture data for another view, or each movie image can be recorded in a contiguous memory area. The communication locations of the motion picture data representing the corresponding angles are transition points. Management of the transition points is carried out as additional data in the memory area, separate from the data area of the movie image. In addition to information for many perspectives, information of a reproduction unit for communicating and reproducing respective recording units for movie data can be provided. According to an embodiment of the present invention, for reproducing multi-angle data, the reproducing apparatus performs the following operation.

Since the information for the transition points for searching and reproducing the angle data is recorded in a memory area separate from the motion image data area, information for the transition points can be read and stored in memory until the corresponding motion picture data is reproduced from the storage medium. Then the data of the corresponding angle are tracked and reproduced, or the data of the other corresponding angle corresponding to the switching of the angle, for example, by the user, is tracked and reproduced. According to an aspect, the clip information comprises transition information as communication information for motion picture data forming an angle block. Accordingly, where at a certain point in time it is necessary to switch the angles, after performing playback to the nearest transition point of the reproduced data, the remaining film image information is reproduced after the corresponding transition point of the film image data for another angle.

Where the corresponding view data is not interleaved and recorded in the continuous memory space, even if the data is multi-view film image data, data is read and reproduced from the continuous memory space where the view switching is not performed. Therefore, multi-angle motion picture data can be encoded as basic motion picture data, for example, single-angle motion picture data. Accordingly, in this aspect, no separate data or coding constraint is required for sequential reproduction of the view, as in interleaving.

As the information structure of the playback module, where information representing a plurality of angles is recorded so that the Playback Item belonging to the Playlist is an angle block, and where it is necessary to switch the angles when playing the AV stream of the clip belonging to the angle block after playback to the nearest transition point from the current location AV stream of the clip for the playback angle, playback continues from the point after the corresponding transition point of another AV stream of the clip for another view, switching views from the view (current view) to another view is requested, for example, by the user. According to FIG. 21, where separate PlayLists are provided for respective views, when switching views is required when playing the current PlayList, another PlayList corresponding to the switch is played.

A recording device according to an embodiment of the present invention is a device for recording onto an information carrier of an AV stream of a clip, transition point information and playback module information described above. A recording method using a recording apparatus according to an embodiment of the present invention is as follows.

Given the reading speed V_R, the transition time of the playback device T_JUMP, and the maximum bit rate of the V_O motion picture data, the size of the transition module is determined. The dependence used to determine the size of the transition module is described above. The specific size of the jump module is converted during playback. Then, the corresponding movie images are encoded so that random access points are created in the modules, each of which is equal to or greater than the specified playback time. The boundary locations of these modules are used as transition points. For example, in a space-time compression method such as MPEG, the random access point is the start point of the Image Group (GOP). Accordingly, the transition module contains several GOPs. A transition point can be created at the same playback time for each movie image.

The encoded motion picture data is interleaved using the transition module as an interleaved module, or recorded in the contiguous memory region of the information carrier in accordance with each aspect thereof. As additional information, specific location information for transition points is recorded. According to an aspect of the present invention, information regarding transition points corresponding respectively to an AV stream of a clip may be recorded in the clip information.

After that, information is created and recorded on the playback modules forming multi-angle data. At this time, the Playback Point corresponding to the clips is created to form the angle block. According to an aspect, said angle blocks are interlinked to create a PlayList. According to another aspect, an independent PlayList for each view can be created.

As described above, according to the present invention, transition point information is recorded in a memory area separate from the motion picture data area. The movie data for one view can be interleaved with movie data for another view, or the movie data for multi-view data can be individually recorded in a contiguous memory area. Accordingly, efficient distribution of the recording area and random access are achieved. This also provides the ability to more effectively track and read multi-angle motion picture data.

It is understood that a system that uses the present invention also contains read-only or removable memory, such as magnetic and optical disks, RAM (RAM), ROM (ROM), a carrier medium, etc., on which the process can be distributed and stored, and data structures of the present invention. Operations can be distributed, for example, also by downloading via a communication network such as the Internet.

It is also clear that although the present invention is partially illustrated in the description of the DVD, the present invention is not limited to DVD and can be applied to a variety of storage media known or known.

It is further understood that although illustrative, non-limiting embodiments of the present invention overcome the above and other disadvantages not described above, the present invention is not required to overcome the disadvantages described above, and explanatory, non-limiting embodiments of the present invention may not overcome any of the problems. described above.

Although several embodiments of the present invention have been illustrated and described, it is obvious to those skilled in the art that without departing from the spirit and principles of the invention, the subject of which is defined in the appended claims and their equivalents, changes can be made in these embodiments.

Claims (2)

1. A device for reproducing from a storage medium of film image data for various angles corresponding to the film image, comprising:
a reading module that reads from the storage medium the AV streams of the clip corresponding to the movie data for different angles, wherein the AV streams of the clip are interleaved relative to each other, and
a playback module that reproduces the AV streams of the clip in accordance with the set of clip information corresponding to the AV streams of the clip provided in the area of the storage medium separate from the region of the interleaved AV streams of the clip, wherein each clip information contains a matching pattern of entry points containing information regarding entry points of the corresponding one of the aforementioned AV streams of the clip for random access and information regarding whether each of the entry points is an angle switching point through which the movie image is reproduced from one perspective to another perspective,
wherein the playback module goes to the entry point of said AV stream of the clip from one angle to another angle if the entry point is an angle switching point using said information regarding entry points and said information regarding whether each of the entry points is an angle switching point. 2. The device according to claim 1, in which the information on the entry points contains information about the location of the access point in the AV stream of the clip.

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