Lg Electronics Inc.

Jang Hui Cho

Byung Jin Kim

Kang Soo Seo

Jea Yong Yoo

Sung Wan Park

Mi Hyun Kim

Soung Hyun Um

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 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.

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.

Recording medium, and method and apparatus for reproducing the recording medium

In one embodiment, the method includes retrieving management information associated with audiovisual data. The management information includes location 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 being describing the audiovisual data. 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 location information specifying a location of 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.

In one embodiment, the recording medium includes a data area storing moving picture data, and a navigation area storing navigation information for managing reproduction of the moving picture data. The navigation information includes a metadata indicator indicating whether metadata associated with the moving picture data exists. The metadata is additional information describing content of the moving picture data, and the navigation information includes linking information identifying metadata associated with the moving picture data if the metadata indicator indicates metadata associated with the moving picture data exists. The navigation area may also store a content reference that references the moving picture data associated with the metadata.

The recording medium stores a transport stream formed of packets. The packets represent one or more PES packets and are grouped into units of a fixed number of packets. A first portion of each unit corresponds to a first portion of a PES packet.

Growing community of inventors

Seoul, South Korea

Jang Hui Cho