Lg Electronics Inc.

Sung Wan Park

Byung Jin Kim

Kang Soo Seo

Jea Yong Yoo

Soung Hyun Um

Mi Hyun Kim

Jang Hui Cho

Eun Sil Hyun

Sung Ryun Cho

Seung Hoon Lee

Yong Cheol Park

Si Jung Noh

Young Sun Shim

Chang Bum Kim

Jang Hul Cho

Sang Ryun Cho

A method and an apparatus for retrieving information for managing video data involving link information associating metadata with the video data. A metadata indicator is used to indicate that metadata exists in a stream with the linking information. Link information also associates the metadata with location information to identify where additional information on the video data, which is described by the metadata, may be found. Using the method or apparatus, a single metadata unit is able to be associated with a plurality of video data units, or a plurality of metadata units are able to be associated with a single video data unit, in order to provide more information on the video data.

Recording medium containing moving picture data and additional information thereof and reproducing method and apparatus of the recording medium

The present invention relates to a recording medium containing moving picture data and additional information thereof and to reproducing method and apparatus of the recording medium. The present recording medium has script files including additional information about moving picture data, e.g., scene descriptive text and introduction of characters, etc. In addition, information linking each script file with a section of moving picture data to be presented with contents of the script file is included in a link data file or is contained in a filename of the script file. In reproduction of the recording medium, a script file linked with presently reproduced moving picture data section is determined and searched for based on the link data file or every filename of the script files, and contents of the found script file are presented together with the presently reproduced moving picture data. Furthermore, previously presented additional information is removed depending on data or filename of the found script file.

Method and apparatus for retrieving metadata for managing video data

The recording medium has a data structure for managing reproduction of data recorded on the recording medium. A navigation area stores at least one navigation file, and the navigation file includes at least one navigation command group. At least one navigation command group includes at least one navigation command for managing reproduction of at least video data recorded on the recording medium.

Recording medium having data structure for managing reproduction of at least video data recorded thereon and recording and reproducing methods and apparatuses

The medium has script files including additional information about moving picture data, e.g., scene descriptive text and introduction of characters, etc. In addition, information linking each script file with a section of moving picture data to be presented with contents of the script file is included in a link data file or is contained in a filename of the script file. In reproduction of the recording medium, a script file linked with presently reproduced moving picture data section is determined and searched for based on the link data file or every filename of the script files, and contents of the found script file are presented together with the presently reproduced moving picture data. Furthermore, previously presented additional information is removed depending on data or filename of the found script file.

A method and apparatus for reproducing video data are discussed. According an embodiment, the apparatus includes a controller configured to receive a request of a path change, the controller configured to control the path change from a current path to the request path among the multiple reproduction paths by identifying path information in an entry point map, the path information associated with an entry point in the video data, and the entry point map having an entry point fine table including fine information of at least one entry point and an entry point coarse table including coarse information of the at least one entry point, the fine information and coarse information identifying a presentation time and an address for the at least one entry point.

Recording medium having data structure for managing recording and reproduction of multiple path data recorded thereon and recording and reproducing methods and apparatus

The computer readable medium stores an executable data structure for managing reproduction of text by a reproducing apparatus. The data structure includes at least one text subtitle stream having a style segment and at least one presentation segment. The style segment defines a group of region styles, and the presentation segment contains at least one region of text. The region of text is linked to a selected one of the group of region styles defined in the style segment by an identifier. The style segment and the at least one presentation segment are encapsulated into respective PES packets. The presentation segment contains a continuous presentation flag indicating whether continuous presentation is required for the presentation segment with a previous presentation segment. A presentation start time of the presentation segment is equal to presentation end time of the previous presentation segment when continuous presentation is required for the presentation segment with the previous presentation segment.

Recording medium and method and apparatus for reproducing text subtitle stream recorded on the recording medium

A structure of navigation information for video data recorded on a recording medium and recording/reproducing methods and apparatuses using the structure. A primary data stream and secondary data streams associated with the primary data stream are recorded on a recording medium and access management information such as TMAP information is created for each of the recorded data streams and recorded thereon, the access management information including type information indicating whether the corresponding data stream is a primary stream or a secondary stream.

Structure of navigation information for video data recorded on a recording medium and recording/reproducing method and apparatus using the structure

The present invention relates to a method for recording and managing a multi-channel broadcast stream. The present method records on a recording medium such as a BD-RW a multi-channel broadcast stream where a plurality of channels are multiplexed, and creates and records management information for individual search and reproduction control of the plural channels. Consequently, this method ensures fast random access and various trick play of individual subchannel streams multiplexed in a recorded multi-channel stream at user's request.

Method for recording and managing a multi-channel stream

In one embodiment, the method includes retrieving management information associated with the audiovisual data. The management information includes link information, an indicator, and reference information. The method further includes identifying whether or not a set of additional data associated with the audiovisual data exists in a stream including at least a portion of the management information using the indicator. The additional data describes the audiovisual data. Also, the indicator includes one of a first indicator value indicating that the set of the additional data associated with the audiovisual data exists in the stream and a second indicator value indicating that the set of the additional data associated with the audiovisual data does not exist in the stream. The audiovisual data and the set of the additional data are retrieved using the link information referencing the set of the additional data and the reference information being assigned to the audiovisual data, and the audiovisual data and the associated additional data are reproduced.

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Suwon-si, South Korea

Sung Wan Park