KR101358686B1 - Method and apparatus for playbacking optical disc - Google Patents

Abstract

The present invention provides an optical disk reproducing method and a reproducing apparatus. The optical disc reproducing method of the present invention comprises the steps of retrieving description information of a content to be reproduced, and generating a reproduction file system generated based on a directory file system of a storage medium of a content to be reproduced, based on the description information. And thereafter playing back the content to be played back according to the playback file system. The playback apparatus of the present invention includes an acquisition apparatus for acquiring description information of content to be reproduced, a generation device for generating a reproduction file system according to the description information, and a reproduction engine for reproducing content to be reproduced according to the reproduction file system. Equipped. According to the present invention, the complexity of the design and implementation of the playback apparatus can be greatly simplified.

Optical disc playback, augmented content, technical information, playback engine

Description

TECHNICAL AND APPARATUS FOR PLAYBACKING OPTICAL DISC}

The present invention relates to an optical disc reproducing technique, and more particularly, to a method and apparatus for reproducing an optical disc whose content is enhanced by a network or in other ways.

With advances in optical storage technology, optical discs can not only store large amounts of information, for example, the Enhanced Digital Versatile Disc (eDVD) format and the Blu-ray optical disc format, but also the path to more information. And a counter. These optical disc formats break the limitation that previous optical disc formats only support playback of content stored on an optical disc, and are associated with the optical disc but not stored on the optical disc (e.g., stored on a network), i.e. augmentation. Enhanced content may be further supported. For example, when an optical disc player is playing an optical disc, in addition to playing the content inside the optical disc, information related to the optical disc content or a specific scenario is obtained from the network through network link information provided inside the optical disc. And also stored on other local storage media (e.g., U disk, hard disk, storage card, etc.) related to the optical disk contents based on the link information provided on the optical disk. . These optical disc formats with the functionality of augmented content can allow users to have an unprecedented audiovisual experience.

In these optical disc formats with enhanced optical disc content, the playback engine of the optical disc player not only plays back the content stored on the optical disc, but also accesses the content associated with the optical disc content given by other information sources (especially the network), respectively. And regeneration. 1 is a block diagram of an optical disc reproducing apparatus 100 of the prior art. The playback device 100 may not only play back the contents stored in the optical disk and other local storage media, but also access the network server to acquire and play the contents related to the optical disk.

When the playback device 100 is playing an optical disc, the content stored on the optical disc can be directly played back by the playback engine 110 in accordance with corresponding application program interfaces (APIs). For content related to optical disk content stored on network servers or other local storage media, playback engine 110 may, based on these different content storage addresses and storage schemes, provide corresponding instructions and API commands (e.g., Socket basic commands based on TCP / IP) to access the associated addresses to play these contents. The buffer manager 130 may control the buffer 120 to play the augmented content.

Conventional optical disc reproducing apparatus and optical disc reproducing method need to access and play contents of various storage media in various ways using various commands. The reproduction engine 110 must identify the storage information of these contents, and at the same time, the reproduction engine needs to select various processing methods according to various content formats. Further described in detail, content stored on an optical disc and stored on other storage media and augmented content associated with the optical disc content can only be processed separately by the optical disc player, and these contents are used collectively. Since it is very difficult, the particular complexity of design / manufacturing of a regeneration engine is provided.

If augmented content, especially augmented content in a network, includes a new media format or is associated with a new network protocol, the playback engine 110 must add a new application program interface or update an existing technology version to obtain content in those formats. Can play.

Accordingly, there is a need to provide an optical disc reproducing method and apparatus that can simplify the reproduction of optical disc content and augmented content.

After all, it is an object of the present invention to provide an optical disk reproducing method and apparatus which can overcome the problems of the prior art.

The optical disc reproducing method provided by the present invention comprises the steps of retrieving description information of a content to be reproduced, and a reproduction file system generated based on a directory file system of a storage medium of the content to be reproduced. Generating based on the description information, and then reproducing the content to be reproduced according to the reproduction file system. In this case, the content to be played back includes content stored on an optical disk and optical disk augmented content stored on another storage medium (for example, a network). In this case, the technical information includes storage information of the content to be played. The method comprises the steps of: retrieving information of reproduction software resources for reproducing the content to be reproduced, and generating the reproduction file system based on the information of the reproduction software resources and the description information of the resources to be reproduced. It further includes. The content to be reproduced can be accessed and reproduced by a single application program interface according to the reproduction file system.

An optical disc reproducing apparatus provided by the present invention includes a retrieval apparatus for retrieving technical information of content to be reproduced, and the technical information includes storage information of the content to be reproduced. The optical disc reproducing apparatus further includes a generating device for generating a reproducing file system based on the description information, wherein the reproducing file system corresponds to a directory file system of a storage medium of the content to be reproduced. The optical disc reproducing apparatus further includes a reproducing engine for reproducing the content to be reproduced in accordance with the reproducing file system. The retrieval apparatus is also used for retrieving information of reproducing software resources necessary for reproducing the content to be reproduced, such as stored information, for example buffered stored information. The generating device is also used to generate the reproduction file system based on the description information and the information of the reproduction software resources. The playback engine uses a single application program interface to access and play content to be played back according to the playback file system.

According to the optical disc reproducing method and apparatus of the present invention, the process of reproducing content to be played by the optical disc reproducing engine is simplified, and contents of various storage media can be accessed and reproduced using a single application program interface. . Even if there is a need to play content in a new optical disc format or another new storage medium emerges, there is no need to update the optical disc reproducing engine, and according to the present invention, simply extending the functional modules of some of the reproducing engines, the entire optical disc Since the updating of the reproduction apparatus can be achieved, the complexity of the design and implementation of the reproduction engine can be greatly simplified.

Other objects and advantages of the present invention will become apparent from the following detailed description and claims, taken in conjunction with the accompanying drawings, in order to attain a more comprehensive understanding of the invention.

The invention is explained in more detail with reference to the following accompanying drawings:

1 is a block diagram of a prior art optical disc reproducing apparatus 110,

2 is a block diagram of an optical disc reproducing apparatus 200 according to an embodiment of the present invention.

3 is a flowchart of an optical disk reproducing method according to an embodiment of the present invention;

4 is a diagram illustrating a directory structure of a playback file system according to an embodiment of the present invention;

5 is a schematic diagram of links of a playback file system according to an embodiment of the present invention.

Like reference symbols in the accompanying drawings indicate like, similar, or corresponding features and functions.

2 is a block diagram of an optical disc reproducing apparatus 200 according to an embodiment of the present invention. The apparatus 200 includes a retrieval apparatus 210, a generating apparatus 220, and a regeneration engine 230.

The retrieval apparatus 210 is used to retrieve technical information of content to be reproduced. The content to be played back includes content to be played stored on an optical disc and augmented content related to content to be played inside the optical disc. Augmented content includes content stored on networks that are provided with link addresses on the optical disc, and other local storage media (eg, text, still picture, video, audio and video segments, etc.) provided with links on the optical disc (eg , Hard disk, U disk, etc.). The technical information retrieved by the retrieval apparatus 210 may be stored in the above-described storage information of the content to be reproduced, for example, storage addresses of the content to be reproduced on an optical disc or other local storage medium, or downloaded from networks. A buffering storage address of the content to be played in the buffer. For network enhanced content, this content must be downloaded to the buffer of the optical disc player to realize seamless reproduction, and the network content obtains the buffering address of the buffer.

If the content to be played includes network content, in order to ensure smooth playback of the network content, a specific application program resource supporting the playback of the network content is downloaded into the buffer storage of the optical disk player and correspondingly buffered. You need to get the storage addresses. Thus, in such a case, the retrieval device 210 can display information of reproducing software resources that support reproducing of the content to be reproduced, for example, a storage address in a network or a buffering storage address in a buffer of an optical disc reproducing apparatus. It is also used to retrieve the stored information of the application program, including.

The generating device 220 is used to create a reproduction file system using the description information of the content retrieved by the retrieving device 210. Since the directory file system in the storage medium includes the description information of the content to be reproduced, The device 22 may generate, for example, a directory file system in the optical disc of the optical disc content based on the directory file system in the storage medium of the content to be reproduced. In general, an initial reproduction file system is established through a mapping or conversion method based on a directory file system of contents to be reproduced stored on an optical disc, and then a reproduction file system in which technical information of an incremental content or a corresponding directory file system is established. In addition to this, an integrated playback file system of contents to be played back is established in an optical disk player, and the file system includes technical information (eg, storage information, etc.) of contents to be played back in various storage media. .

If the content to be played back includes the network link content, the generation device 220 adds the play resource information necessary for playing the corresponding network content to be played back to the play file system, that is, play the relevant directories of the application programs. Mapping to the file system, the relevant directories of the playback file system must also contain the storage / buffer address links of these application programs. By establishing such a reproduction file system, the contents to be reproduced and the augmented contents of the optical disc and the resources necessary for reproduction can be accessed and reproduced in a single manner.

For content that is to be buffered by a buffer, if the content exists inside the buffer and has buffering storage addresses, the generating device 220 adds this information to the established playback file system. If the content has a buffering storage address only when the content is downloaded during reproduction, the generating device continuously updates the reproduction file system established during reproduction of the optical disc. Accordingly, the device 200 may include a buffer (not shown) that buffers content that needs to be buffered and corresponding playback application programs.

The reproduction engine 230 is used to reproduce the contents to be reproduced of the optical disc in accordance with the above-described reproduction file system, and there is no need to access the directory file system of the optical disc. The reproduction engine 230 can smoothly access and reproduce the reproduction contents of the optical disc and the augmented contents of the optical disc based on the information provided by the reproduction file system using only a single application program interface program.

3 shows a flowchart of an optical disk reproducing method according to an embodiment of the present invention. After the optical disc is inserted into the playback device, the optical disc playback device first reads a directory file stored inside the optical disc, where the directory file is reproduced correspondingly, such as technical information of a part of the content to be played and storage information. Information of software resources is included (step S305). The purpose of step S305 is to retrieve the description information of the content to be reproduced because the directory file system of the storage medium of the content to be reproduced contains the description information of the content to be reproduced, and the present invention provides the content to be reproduced. The technical information of the content to be played back can be easily obtained according to the directory file system in the storage medium of the. Of course, other traditional methods of retrieving descriptive information of the content to be played are also available.

Thereafter, an initial reproduction file system is generated based on the directory file system of the reproduction contents of the inserted optical disc (step S310). Based on the directory file of the optical disc, an initial reproduction file system is generated by the mapping. For details of the creation process of the reproduction file system, refer to the description of FIG. 4 below.

The initial reproduction file system includes a directory file system generated by the mapping having a directory file structure corresponding to the content to be reproduced stored on the optical disc. For example, a directory file system of an optical disc includes a "Video Transfer Subdirectory (VIDEO_TS)" and an "Augmented Content Subdirectory of an Optical Disc (DVD_ENAV)", and thus the playback file system also includes these two subdirectories. Include them. Link information of the augmented content to be played corresponding to a storage path indicating the augmented content to be played is further included in subdirectories of the initial play file system. If the reproduction of the augmented content to be reproduced requires the support of application programs stored on the optical disc, the storage information of these application programs is also mapped to the relevant directories of the reproduction file system.

Next, the descriptive information of the augmented contents in other local storage media is retrieved and added to the reproduction file system (step S320). During the manufacture of optical discs, technical information such as titles, subjects, and some keywords of the contents stored on the optical disc were defined and stored on the optical disc, so that the corresponding content to be played on other local storage media can be easily reproduced based on only this information. You can find it. Since descriptive information (e.g., storage address) of augmented content on other local storage media is mapped to an established playback file system, the playback file system may link information (e.g., pointing to augmented playback content on other local storage media). For example, storage addresses of other local storage media).

Thereafter, the playback file system is updated based on the description information of the augmented content of the network (step S330). Usually, the network's augmented content and corresponding playback resources (e.g., playback application programs for audio and video and other application programs required for network playback) are previously downloaded into the buffer storage of the optical disc player. And then played back to ensure seamless playback. For certain scenarios, for example, an optical disc may have some network augmented content in the form of a URL link (e.g. www.dev_2.com.chu / video.exe). A network servo for acquiring is provided, wherein network enhanced content and corresponding playback resources are accessed and downloaded and buffered according to the above URL link information, whereby network enhanced content and playback resources are downloaded in addition to network storage address information. Later with corresponding buffering storage addresses.

Updating the playback file system based on the downloaded network augmented content and the description information of the playback resources is to add these corresponding information including buffered storage information to the playback file system established according to the directory structure. The playback file system includes link information, such as file: // buffer: / Offset = offset & Length = length , that points to a buffering address within the buffered storage of the downloaded content, where buffer is the content in the buffered storage. The start address is offset and the length is length. Similarly, the playback file system may further include descriptive information directly pointing to application program resources within the buffered storage. Step S330 may be executed during playback.

Finally, the optical disc is reproduced in accordance with the established reproduction file system (step S340). Depending on the playback file system, the content to be played is played back using a single application interface. For example, by accessing the link path dvd: // dvdrom: /VIDEO_TS/VIDEO_TS.IFO of the playback file system, the playback device can obtain the path of VIDEO_TS.IFO (stored in the VIDEO_TS directory of the optical disc DVD), This path allows the player to access and play the file. The establishment of the playback file system simplifies the operation of the playback system since the playback engine is separated from a particular storage medium, so that the playback engine does not have to adopt various access methods alone to play the contents of the various storage media.

Note that network enhanced content stored on network servers can be downloaded not only before playback, but also to a buffer or other local storage medium during playback. After the download is complete, the player can map the buffer addresses of these downloaded network playback content to the playback file system so that the player can access these augmented content using the buffer address links provided to the playback file system.

After the optical disc playback is completed, the player can discard the playback file system. Since the playback file system is dynamically created while the optical disc is inserted, the player can automatically discard the playback file system at the end of playback. However, the same optical disc may be repeatedly played back, so that the playback file system may be stored on other local storage media during or at the end of playback, so that it is necessary to establish a playback file system during the next optical disc playback. In consideration of the absence of an optical disc, an optical disc can be played by simply calling an existing playback file system.

4 is a diagram illustrating a directory structure of a playback file system according to an embodiment of the present invention. The player establishes an initial playback file system based on the directory file system of the contents of the optical disc. At this time, the directory structure of the reproduction content of the optical disc includes a root directory, and under this root directory, two subdirectories, "optical disc augmented content subdirectory" and "video transfer subdirectory", exist. The augmented content subdirectory "further has second level subdirectories," font subdirectory "and" page number subdirectory ", and it is assumed that all files are stored in each directory. For example, startup files exist in the "optical disk augmented content subdirectory" of the optical disk, and video transmission files exist in the "video transmission subdirectory".

Since the directory structure of the reproduction file system corresponds to the directory structure of the optical disc, by mapping the entire directory structure of the optical disc to the reproduction file system, the directory structure of the reproduction system can be made the same as the directory structure of the optical disc. In Fig. 4, the directory structure of the playback file system further includes a root directory, and under this root directory, an "optical disk augmented content subdirectory" and a "video transmission subdirectory" exist, and this "optical disk augmented content subdirectory" You can see that there are more "font subdirectories" and "page number subdirectories" below. The description information of the optical disc is stored in these corresponding subdirectories, for example, the description information of the startup file, that is, the storage information of this startup file, is stored in the "optical disk augmented content subdirectory" of the reproduction file system.

The reproduction file system includes directories corresponding to the directory structure of other local storage media, in addition to the directories corresponding to the directory structure of the optical disc. When the relevant content of the optical disc is searched by the player in another local storage medium, it is necessary to map the directory structures of the other local storage medium to the reproduction file system. From Fig. 4, it can be seen that directories not present in the directory structure of the initial playback file system, for example, "audio subdirectory", need to be added to the directory structure of the playback file system, where the description information of the audio file is shown. Is stored in the "Audio subdirectory". For existing directories such as "optical disk augmented content subdirectory", "font subdirectory", and "page number subdirectory", files under these directories on other local storage media (eg, Chinese fonts). It is only necessary to map a file, an index file, a segment file, a page number file, etc.) to the relevant directories of the reproduction file system. The storage paths of these files are stored in the relevant subdirectories of the playback file system. In the case where the same file exists in the same subdirectory, for example, if the technical information of the "Chinese font file" already exists under "Font subdirectory", the "Chinese font file" is a new file on another local storage medium. "Should be used to replace the original information. Thus, the directory system files of the reproduction file system have been completely established.

5 is a schematic diagram of links of a reproduction file system according to an embodiment of the present invention, and further describes a form of links stored in a reproduction file system that can be reproduced by the links. The playback file system can be linked based on URL placement, for example. The "file: //" URI placement indicates that this content can be extracted from local storage space, and the "http: //" URL indicates that this content is located on a network server, so that this content uses the HTTP protocol. "Dvd: //" indicates that the contents are located on the optical disc, and that these contents can be extracted using an application program interface specific to the optical disc. For device identifiers of the "file: //" URI (e.g. buffer: / buffer, hd: / hard disk, flash: / flash memory), it is necessary to determine what kind of storage media the playback content is stored on. Can be identified.

As shown in Fig. 5, it is not necessary to first download the contents of the optical disc into the buffer, and the contents are transferred to the "Video Transfer Subdirectory" and the "Optical Disc" based on the URL arrangement (which specifies how to display the information location). Only under "Augmented Content Subdirectory". For example, the technical information of a video transfer file is stored in the form of "dvd: // dvdrom: /VIDEO_TS/VIDEO_TS.IFO", in which the video file of the optical disc is stored under the video transfer subdirectory of the optical disc dvdrom. Indicates that the file name is VIDEO_TS.IFO. As another example, the descriptive information of the startup file is stored in the "optical disk augmented content subdirectory" in the form of "dvd: // dvdrom: /VIDEO_TS/STARTUP.MLS", where the startup file is a video of the optical disc dvdrom. It is stored under the send subdirectory and indicates that the file name is STARTUP.MLS.

Although it is not necessary to download the playback content of an optical disc, the playback content of some optical discs can be downloaded to a buffer in advance, the content of which can be pictures, text or segments of audio and video, etc. Is to prevent frequent jumps of the player when playing these contents. This portion of the downloaded content needs to be mapped under the "optical disk augmented content subdirectory", which may be represented as: file: // buffer: / Offset = offset & Length = length This file is stored in the buffer, indicating that the buffer start address is offset and the length is length.

The playback content of another local storage medium does not need to be downloaded, and description information of the playback content can be directly mapped under the "optical disk enhanced content subdirectory" according to the file format of the URL arrangement. For example, there is a picture file associated with an optical disc content stored on another local storage medium, which is in the format file: // hd: disc_a / file.jpg in the playback file system. This indicates that this picture is stored under the directory disc_a on your hard disk, and the file name is "file.jpg".

For the content of the network server, playback content or application program resources need to be first downloaded to a buffer, and the technical information of the downloaded content can be mapped under the "optical disk augmented content subdirectory" according to the file format of the URI batch. For example, description information of the downloaded text file is stored in the format file: // buffer: / Offset = 0x3000 & Length = 0x1200. This indicates that this text file is stored in a buffer, the start address is 0x3000 and the length is 0x1200. As another example, the descriptive information of the downloaded Chinese font file is stored under "font subdirectory" and is stored in the format file: // buffer: / Offset = 0x0000 & Length = 0x1000. This indicates that this Chinese font file is stored in the buffer, the start address is 0X0000, and the length is 0X1000. This Chinese font file may be displayed in the form of a URL rather than a batch, and may point directly to the buffering address and the content length of the downloaded content in the buffer in the form of pointers.

The present invention integrally maps the contents inside and outside the optical disc in the form of a link to the playback file system so that the playback engine operates on the playback file system, thereby eliminating the need to directly manage various content sources. According to this, there is no need to make a large change in the structure of the regeneration engine, and the complexity in design and manufacturing of the regeneration engine is greatly reduced. More importantly, when a new protocol and media format is introduced, there is no need to change the optical disc playback engine, and it is sufficient to update and expand the corresponding software resources of the receiver and generator to handle the new protocol and media. Promote the universality and expandability of the playback device.

The apparatus and method described by the embodiments are suitable for various optical disc formats such as the eDVD format and the Blu-ray Disc format.

While the invention has been described with reference to specific embodiments, it will be apparent to one skilled in the art that various alternatives, modifications, and variations can be made in accordance with the teachings set forth above. Accordingly, such alternatives, modifications and variations that fall within the spirit and scope of the appended claims should be included in the present invention.

Claims (25)

(a) reading the directory file from the optical disc inserted in the optical disc reproducing apparatus (S305), (b) generating an initial playback file system according to the directory file (S310); (c1) retrieving descriptive information of the augmented content associated with the content stored on the optical disc, stored in at least a local storage medium of the optical disc reproducing apparatus, in a network; (c2) adding the technical information to the initial playback file system to establish an integrated playback file system (S320); (d) updating the integrated reproduction file system based on the description information of the augmented content (S330); (e) reproducing the optical disc based on the updated integrated reproducing file system (S340). The method of claim 1, Wherein said updated integrated playback file system includes playback content stored in said local storage medium and link information for accessing said augmented content from said network. 3. The method according to claim 1 or 2, Downloading and buffer-storing the augmented content and a reproduction resource corresponding thereto on the local storage medium of the optical disc reproducing apparatus. delete The method of claim 3, wherein And said updated integrated playback file system includes storage information of said augmented content and playback resources corresponding thereto. delete The method according to claim 1 or 2, The step (b) includes the step of generating the initial playback file system by mapping according to the directory file. The method of claim 1, And the directory file includes description information of content to be played and playback software resource information corresponding to the description information. The method of claim 7, wherein And the initial reproduction file system generated in step (b) has a directory file structure corresponding to the content to be reproduced stored in the optical disc. 3. The method according to claim 1 or 2, The updated integrated reproducing file system includes storage information of an application program for reproducing the optical disc, wherein step (e) is reproduced by the single disc means associated with the optical disc, the local storage medium, and the application. Accessing at least one of the networks for obtaining the content to be reproduced. An optical disc player, Reading means for reading a directory file from the optical disc inserted in the optical disc reproducing apparatus; Generating means for generating an initial playback file system in accordance with the directory file; Retrieving means for retrieving technical information of the augmented content associated with the content stored on the optical disc and on a network and stored in at least a local storage medium of the optical disc reproducing apparatus; Means for establishing the integrated playback file system by adding the technical information to the initial playback file system; Updating means for updating the integrated reproduction file system based on the description information of the augmented content; And reproducing means for reproducing the optical disc on the basis of the updated integrated reproducing file system. delete delete delete delete delete delete delete The method of claim 11, And the updated integrated playback file system includes playback content stored in the local storage medium and link information for accessing the augmented content from the network. 20. The method according to claim 11 or 19, Means for downloading the augmented content and playback resources corresponding thereto; And means for buffer-storing the downloaded augmented content and playback resources corresponding thereto. 21. The method of claim 20, And the updated integrated playback file system includes storage information of the augmented content and playback resources corresponding thereto. The method of claim 11, And the directory file includes description information of content to be reproduced and playback software resource information corresponding to the description information. 20. The method according to claim 11 or 19, And the means for generating the initial playback file system generates the playback file system by mapping according to the directory file. 24. The method of claim 23, And the initial reproduction file system generated by the means for generating the initial reproduction file system has a directory file structure corresponding to the content to be reproduced stored in the optical disc. 20. The method according to claim 11 or 19, The updated integrated reproducing file system includes storage information of an application program for reproducing the optical disc, and the means for reproducing the optical disc is provided by the optical disc, the local storage medium, and a single interface means associated with the application. An apparatus for reproducing an optical disc, which accesses at least one of the networks for obtaining content to be reproduced.

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