Source: http://www.google.com/patents/US7764866?dq=5,664,133
Timestamp: 2014-12-22 05:52:10
Document Index: 87891222

Matched Legal Cases: ['Application No. 60', 'Application No. 200580038705', 'Application No. 200580031490', 'Application No. 05776011', 'Application No. 07107743', 'Application No. 05823683']

Patent US7764866 - Recording medium, method for searching for content data from the recording ... - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsA recording medium, a method for searching for content data from the recording medium, and a method and apparatus for reproducing data from the recording medium are disclosed. The recording medium includes a stream area for storing content data, and a reproduction management area for storing a search...http://www.google.com/patents/US7764866?utm_source=gb-gplus-sharePatent US7764866 - Recording medium, method for searching for content data from the recording medium, and method and apparatus for reproducing data from the recording mediumAdvanced Patent SearchPublication numberUS7764866 B2Publication typeGrantApplication numberUS 11/292,101Publication dateJul 27, 2010Filing dateDec 2, 2005Priority dateDec 10, 2004Fee statusPaidAlso published asCN101057276A, US20060126487Publication number11292101, 292101, US 7764866 B2, US 7764866B2, US-B2-7764866, US7764866 B2, US7764866B2InventorsKang Soo Seo, Jea Yong Yoo, Byung Jin KimOriginal AssigneeLg Electronics, Inc.Export CitationBiBTeX, EndNote, RefManPatent Citations (70), Non-Patent Citations (6), Referenced by (4), Classifications (8), Legal Events (1) External Links: USPTO, USPTO Assignment, EspacenetRecording medium, method for searching for content data from the recording medium, and method and apparatus for reproducing data from the recording mediumUS 7764866 B2Abstract A recording medium, a method for searching for content data from the recording medium, and a method and apparatus for reproducing data from the recording medium are disclosed. The recording medium includes a stream area for storing content data, and a reproduction management area for storing a search file capable of searching for the content data. The search file divides the content data into a plurality of scenes. If the content data supports a multi-angle, the search file classifies the scenes according to angles, and includes attribute for specifying the angles. Therefore, the recording medium can easily search for a variety of content data recorded in the recording medium, can provide the searched result, and can effectively reproduce/manage data of the recording medium, resulting in the creation of more convenient functions for a user.
wherein the metadata file has a file name indicating that the metadata file is for scene search, and the file name starts with a predetermined prefix �esmt� which indicates that the metadata file is for scene search.
3. The method of claim 2, wherein the file name of the another metadata file starts with �bdmt� which indicates that the another metadata file is for disc library.
6. The method of claim 1, wherein the file name of the metadata file starts with the prefix �esmt�, and is followed by a three-lettered language code indicating a language used in the metadata and a five-digit playlist id.
9. The apparatus of claim 8, wherein the file name of the another metadata file starts with �bdmt� which indicates that the another metadata file is for disc library.
12. The apparatus of claim 7, wherein the file name of the metadata file starts with the prefix �esmt�, and is followed by a three-lettered language code indicating a language used in the metadata and a five-digit playlist id.
checking, with a controller, a file name of a metadata file to determine whether the metadata file is for scene search, the file name starting with a predetermined prefix �esmt� which indicates that the metadata file is for scene search;
check a file name of a metadata file to determine whether the metadata file is for scene search, the file name starting with a predetermined prefix �esmt� which indicates that the metadata file is for scene search;
23. A non-transitory recording medium comprising: a stream area for storing content; and a management area for storing a metadata file for scene search, the metadata file including metadata about a scene constituting the content, wherein the metadata file exists under a metadata directory of the recording medium and has a file name indicating that the metadata file is for scene search, and the file name starts with a predetermined prefix �esmt� which indicates that the metadata file is for scene search.
24. The non-transitory recording medium of claim 23, wherein the management area stores another metadata file for recording medium library, the another metadata file including metadata about the recording medium itself, wherein the another metadata file exists under the metadata directory and has a file name starting with �bdmt� which indicates that the another metadata file is for disc library.
27. The non-transitory recording medium of claim 23, wherein the file name of the metadata file starts with the prefix �esmt� and is followed by a three-lettered language code indicating a language used in the metadata and a five-digit playlist id. Description
This application claims the benefit of the U.S. Provisional Application No. 60/634,546, filed on Dec. 10, 2004, in the name of inventors Kang Soo SEO, Jea Yong YOO, and Byung Jin Kim, entitled �METHOD OF ENHANCED SEARCH FOR HIGH DENSITY OPTICAL DISC�, which are hereby incorporated by reference as if fully set forth herein.
SUMMARY OF THE INVENTION Accordingly, the present invention is directed to a recording medium, a method for searching for content data from the recording medium, and a method and apparatus for reproducing data from the recording medium that substantially obviate one or more problems due to limitations and disadvantages of the related art.
The term �Content� is indicative of content data of the title, and is specific data supplied from a disc author.
In association with the above-mentioned description, the term �Scene� is indicative of a piece of content data, which is divided into a plurality of pieces at intervals of a predetermined time. In other words, a scene in the present invention is a time based description unit of a metadata in a search file.
The term �Object� is indicative of reproduction management information including a command or program for reproducing the disc. In other words, a variety of Objects are present in the disc, are linked to a specific title, or are connected to other Objects. Therefore, the above-mentioned Objects are pre-designed according to intentions of a manufacturer or author of the disc, are recorded in the disc, and increase the number of scenarios for reproducing data of the disc. In other words, the term �Object� is indicative of a reproduction management unit including a command or program for managing a reproduction scenario of data recorded in the disc.
The reproduction/management file structure according to the present invention includes one or more BDMV directories in a single root directory. The BDMV directory includes not only an index file �index.bdmv� acting as a general file (i.e., an upper file) capable of guaranteeing user interactivity, but also an Object file �MovieObject.bdmv�. The file structure includes a variety of directories for storing information of actual data recorded in a disc and other information associated with a method for reproducing the data, for example, a PLALIST directory, a CLIPINF directory, a STREAM directory, a BDJO directory including a BD-J Object file, and an AUXDATA directory composed of auxiliary data associated with disc data reproduction. The above-mentioned directories and a variety of files included in the directories will hereinafter be described.
The STREAM directory includes a plurality of AV (Audio and Video) stream files recorded in a disc according to a specific format. For example, the STREAM directory uses extension names of stream files (01000.m2ts, . . . ) as a specific extension name �*.m2ts�. Generally, the stream file contains moving image data as content data of the present invention.
The CLIPINF directory contains one Clip information file for each Clip AV stream file. Particularly, the Clip information files (*.clpi) contain attribute and timing information of the stream files therein. The Clip information files (01000.clpi, . . . ) connected to the stream files (*.m2ts) on a one-to-one basis are generically named a �Clip� in a BD standard. In other words, this means that a single stream file (*.m2ts) must correspond to a Clip information file (*.clpi).
The AUXDATA directory includes an additional data file for reproducing data of the disc. For example, the AUXDATA directory includes a sound file �Sound.bdmv� for providing a user with click sound data and menu sound data during a data reproduction time, and a font file �11111.otf� for providing the user with font information when a text subtitle is reproduced.
The META directory includes metadata acting as �Data about Data�. According to the present invention, a search file is contained in the META directory. In addition, other metadata such as Disc Library metadata is present in the aforementioned META directory. The search file is characterized in that it uses a unique file name distinguished from other metadata files.
In other words, the META directory is contained in the BDMV directory. For example, the search file associated with the present invention is recorded as a specific file name such as �esmt_OOO_xxxxx.xml�.
Head information �esmt_� contained in the aforementioned file name is used as a file descriptor code distinguished from other metadata. For example, all files beginning with the �esmt_� are indicative of search files, and all files beginning with �bdmt_� information are indicative of Disc Library files.
Specific information �_OOO_� contained in the aforementioned file name is used as a language code for specifying supported language information. For example, a search file composed of the English language may be denoted by �_eng_�, a search file composed of the Korean language may be denoted by �_kor_�, a search file composed of the Japanese language may be denoted by �_jpn_�, and a search file composed of a plurality of languages may be denoted by �_mul_�.
The last information �_xxxxx� of the aforementioned file name is used as an ID code for specifying individual files of a PlayList file (e.g., 00000.mpls, . . . ) indicative of an object of search information of a corresponding search file. For example, if a specific title of the disc is reproduced by a specific PlayList file �00000.mpls�, a file name of the English search file for searching for content data of the tile is composed of �esmt_eng�00000.xml�.
The metadata includes attribute and scene element of individual scenes. The attribute is indicative of characteristic information of a corresponding scene, such that each scene is defined by the attribute. The attribute of the scene includes �entry_point� 451 a and duration 451 b, etc. The �entry_point� 451 a is used to specify the start point of each scene on the basis of a PlayList Global Time Axis. The �duration� 451 b is used with scene element to specify the duration of each scene. In association with the above-mentioned description, the scene may have a predetermined point between an entry_point and another entry_point of the next scene. It may also be defined by both an entry_point indicative of a scene start point and a duration indicative of a duration time of the scene.
The present invention is characterized in that information for specifying individual angles is applied to the aforementioned attribute. For example, the �angle_num� 451 c of FIG. 4 may be used as the aforementioned attribute, and a detailed description thereof will be described later with reference to FIG. 5. It is well known to those skilled in the art that not only the aforementioned attribute, but also other attribute for specifying individual scenes may be applied to the present invention.
The scene element is an element describing the scenes of a referenced media clip. In other words, the scene element is indicative of scene constituent element information. The scene can be denoted by a scene type element describing the scenery or the situation of the scene, a character element describing the characters appearing on a corresponding scene, and an actor element describing a person acted as a character in the scene, etc. The scene type, the character, and the actor, etc. serve as constituent elements of the scene and their associated information serve as scene element. In other words, the scene type 452 a, the character 452 b, and the actor 452 c, etc. are scene element of individual scenes, and are contained in metadata of the present invention. The scene element serves as a descriptor associated with a specific scene interfacing with a user during a content search process. Also, there is another descriptor �authordef�. The �authordef� element is used to express any additional information that a content provider intended to add. The metadata file for searching for content data may include not only the aforementioned scene element, but also other descriptors. The aforementioned scene elements may also have other elements of metadata as child element.
FIG. 5 is a conceptual diagram illustrating a process for implementing a multi-angle title according to the present invention. An image supplied to a user may be variably viewed by the user's eyes according to a variety of angles. For example, provided that the user views a specific character at the back or the front during a play time of a specific game, or views the specific character in the sky, or views the specific character from the viewpoint of different characters or actors, different images may be viewed by the user's eyes. In other words, the term �Angle� is indicative of an angle supplied from content data, a viewpoint or a view position. If the content data provides the user with a variety of angles, these angles are referred to as a multi-angle title.
In association with the above-mentioned description, content data capable of supporting a multi-angle enables individual angles to have different scenes, and attribute for specifying the angles is applied to scene metadata. The attribute for specifying the angles is represented by �angle_num�. The �angle_num� is indicative of an angle number. The angle number can be acquired by adding a predetermined number of 1 to an angle_ID indicative of ID information of individual angles contained in a PlayItem.
In association with the above-mentioned description, although the angle_num is used as attribute for specifying individual angles according to the present invention, it may be modified as necessary within the scope of the present invention without being limited to the term �angle_num�.
FIGS. 6�8 b show content search result and an associated content reproduction example according to the present invention.
FIG. 6 shows an example in which a searched scene spans a single PlayItem including a multi-angle. FIG. 7 shows an example in which a searched scene spans more than one PlayItems. FIGS. 8 a�8 b show examples in which searched scenes are successively reproduced by the content search process according to the present invention. Operations of FIGS. 6�8 b will hereinafter be described.
Referring to FIG. 6, a PlayList includes three PlayItems (PlayItems #1, #2, and #3), and the second PlayItem #2 from among the three PlayItems has a multi-angle structure composed of three angles (Angles 1, 2, and 3). The scene searched by a content search command extends to the second PlayItem #2 contained in the above-mentioned PlayList, and is equal to a scene of an angle number �2� in the aforementioned PlayItem #2. Therefore, upon receiving a command for reproducing the aforementioned searched scene, the player reproduces a clip corresponding to the Angle 2.
The present invention identifies individual scenes using attribute of specifying an angle of a scene, such that a plurality of scenes overlapped with each other on the same PlayList global time axis as shown in exemplary scenes #2�#3 of FIG. 7.
The angle number (angle_num) of the scene #1 is �3�, and the scene #1 spans the PlayItem #1 and the PlayItem #2. The PlayItem #1 does not have a multi-angle structure, such that information corresponding to the PlayItem #1 acts as invalid information. The PlayItem #2 has 3 angles and supports a corresponding angle, such that it acts as valid information. Therefore, the player reproduces the scene #1 at a default angle in the PlayItem #1, and at an Angle 3 in the PlayItem #2. The angle number �3� is valid at a boundary between the PlayItem #1 and the PlayItem #2, such that the player reproduces the scene #1 corresponding to the boundary at the above Angle 3.
The scene #2 has a predetermined angle number �3�, and spans the PlayItems #2�#4. Since the PlayItem #2 has Angle 3, the player selects/reproduces a clip corresponding to the Angle 3, applies a default angle to the PlayItem #3 having no Angle 3, and reproduces data at the Angle 3 in the PlayItem #4. In this way, the angle number of the scene #3 is �4�, and the scene #3 spans the PlayItems #2�#4, such that attribute for specifying individual angles is invalid in the PlayItems #2 and #3, the scene #3 is reproduced at a default angle. In the PlayItem #4, data corresponding to the Angle 4 is reproduced.
FIGS. 8A�8B are conceptual diagrams illustrating processes for searching for content data from a multi-angle title, and performing data reproduction according to the present invention.
Similar to FIG. 8A, selects certain scene of the searched scenes to start playback the result and the player supports a highlight playback scenario among reproduction scenarios, corresponding data is sequentially reproduced as shown in FIG. 8B. The Angle 3 is applied when the scene #3 starts, the scene #3 is reproduced at a default angle in the PlayItem #3 and is reproduced at the angle 3 in the PlayItem #4. A reproduction point moves from the end of the scene #3 to the next scene #4 to successively reproduce the scenes #3 and #4, resulting in the continuation of data reproduction. In this case, since the angle number of the scene #4 is �4�, it is invalid in the PlayItem #2 including the start point of the scene #4, and the scene #4 is therefore reproduced at the default angle. In scene #4, the Angle 4 is applied in the PlayItem #4 capable of supporting a corresponding angle.
In association with the above-mentioned description, a variety of reproduction scenarios depending on player's support information may be used as presentation scenarios after a content search process is completed. For example, the aforementioned highlight playback scenario for sequentially reproducing the searched scenes, a simple playback scenario for continuously executing only a simple playback function from an entry_point of a user-selected scene, and a �Scene by Scene Playback� scenario which reproduces only the user-selected scene from among the searched scenes and waits for the user's next selection, may be used as the aforementioned playback scenarios.
If the currently-reproduced scene is entirely reproduced at step S50 before a reproduction position reaches the boundary of the PlayItem at step S40 and all scenes to be reproduced are reproduced according to a user command or a playback scenario at step S60, the reproduction process is terminated. For example, referring to the preferred embodiment of FIG. 6, if the highlight playback scenario or the �Scene by Scene Playback� scenario is performed as a reproduction scenario and the searched scene is reproduced, the reproduction process is terminated.
The aforementioned content search method according to the present invention receives a content search command from the controller 12, provides a user with scene element contained in a scene, and provides a scene corresponding to the selected scene element from among the scene element. In this case, not only scenes specified by other attributes (e.g., �entry_point� or �duration� information), but also other scenes specified by individual angles are provided to the user. Therefore, the present invention can search for content data on the condition that individual scenes are specified according to angles. Moreover, although scenes are overlapped with each other on the PlayList global time axis, the scenes can be searched while being specified if they have different angles.
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