Abstract: 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.

Abstract: The recording medium includes a playlist directory area and at least one navigation information area. The playlist directory area stores a playlist directory including a plurality of playlist files. Each playlist file identifies a portion of the multiple playback path video data and at least a portion of the playlist files associated with different playback paths. The navigation information area stores navigation information at least providing information on one playback path.

Abstract: 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.

Abstract: In the method, video data is reproduced from the recording medium, and an I-picture and a number of P-pictures are output as a still picture based on the reproduced video data. The output data may then be received and decoded for display.

Abstract: The present invention relates to method and apparatus of providing supplementary service information for A/V contents written in a recording medium. This method has a recording medium containing Presentation Language data, which have to be included like as in a digital television signal for supplementary service information in accordance with Advanced TV Enhancement Forum or Digital TV Application Software Environment standard, and reproduces, if a disk reproduction is requested, the Presentation Language data as well as requested A/V data and provides them for a connected external device such as a digital television. As a result, various video information and functions provided with Presentation Language data by a recording medium can be realized at a digital television set being able to accept Presentation Language data.

Abstract: In one embodiment, the method includes writing, in a data area of the recording medium, a stream including at least one still picture and at least one presentation information. The presentation information includes presentation timing information for the still picture. The embodiment further includes writing, in a navigation area of the recording medium, management information used to reproduce the still picture.

Abstract: A recording medium, method and apparatus for managing data are discussed. According to an embodiment, the present invention provides a method of reproducing main data and additional data. The method includes receiving the additional data associated with the main data, the additional data being divided into a plurality of segment units; and reproducing the additional data in a synchronous manner with the main data using time information if indication information indicates a presence of the time information. The time information indicates a presentation time of the additional data with respect to the main data. The main data and the additional data are reproduced according to management data, the management data including link information for linking the main data and the additional data.

Abstract: A recording medium, method and apparatus for managing data are discussed. According to an embodiment, the present invention provides a method of reproducing main data and additional data. The method includes receiving the additional data associated with the main data, the additional data being divided into a plurality of segment units; and reproducing the additional data in a synchronous manner with the main data using time information if indication information indicates a presence of the time information. The time information indicates a presentation time of the additional data with respect to the main data. The main data and the additional data are reproduced according to management data, the management data including link information for linking the main data and the additional data.

Abstract: The data structure includes a playlist area storing at least one playlist. The playlist includes at least one playitem and at least one sub-playitem. The playitem provides navigation information indicating at least one still picture from a first file to reproduce and provides duration information for display of the still picture, and the sub-playitem provides navigation information for reproducing audio data from a second file.

Abstract: 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.

Abstract: The recording medium includes a data structure having a menu data area and a menu management area. The menu data area stores one or more thumbnail pictures as menu data. Each thumbnail picture is stored as a block of menu data. The menu management area stores menu management information. The menu management information provides an index to each thumbnail picture in the menu data area.

Abstract: The present invention provides according to an embodiment a method of reproducing content, comprising the steps of: (a) receiving a digital content from an external source, the digital content protected by Digital Right Management (DRM) information, the DRM information authorizing a reproduction of the digital content; (b) requesting the DRM information to an external source based on URL (Uniform Resource Locator) information in order to normally reproduce the digital content; and (c) reproducing the digital content based on the DRM information.

Abstract: A method of creating the playback control file for a recording medium and a method and apparatus for reproducing data using the playback control file are disclosed. The method includes reading an original PlayList including at least one original PlayItem from the recording medium, the at least one original PlayItem being configured to reproduce original data recorded on the recording medium, downloading at least one additional PlayItem from an external source, the at least one additional PlayItem being configured to reproduce additional data downloadable from the external source, and creating a new PlayList by binding the original PlayList with the at least one additional PlayItem, the new PlayList being able to reproduce the original data and the additional data, individually or in combination.

Abstract: 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.

Abstract: In the a data structure, a subtitle area of the recording medium stores a text subtitle stream including text subtitle data and at least one of global style information and local style information. The global style information provides at least one of composition information and rendering information, and the local style information provides font information for at least a portion of the text subtitle data.

Abstract: A recording medium according to an embodiment includes a recording layer and a transport stream recorded on the recording layer. The transport stream is composed of one or more predetermined units, each predetermined unit starting with at least one transport packet for carrying navigation information used to manage subsequent transport packets. The first packet of the at least one transport packet carries only the navigation information including program clock reference (PCR) information and does not carry presentation data.

Abstract: In one embodiment, the data structure includes original management data managing reproduction of stream data. The original management data includes at least one stream information file managing at least one stream file, which includes the stream data; at least one playlist file, which manages the stream information; and at least one general management file, which manages the playlist file. The data structure further includes back-up management data duplicating the original management data. The original management data is recorded at an inner radius portion of the recording medium, and the back-up management data is recorded at an outer radius portion of the recording medium.

Abstract: A recording medium, method and apparatus for managing data are discussed. According to an embodiment, the present invention provides a method of reproducing main data and additional data. The method includes receiving the additional data associated with the main data, the additional data being divided into a plurality of segment units; and reproducing the additional data in a synchronous manner with the main data using time information if indication information indicates a presence of the time information. The time information indicates a presentation time of the additional data with respect to the main data. The main data and the additional data are reproduced according to management data, the management data including link information for linking the main data and the additional data.

Abstract: A recording medium, method and apparatus for managing data are discussed. According to an embodiment, the present invention provides a method of reproducing main data and additional data. The method includes receiving the additional data associated with the main data, the additional data being divided into a plurality of segment units; and reproducing the additional data in a synchronous manner with the main data using time information if indication information indicates a presence of the time information. The time information indicates a presentation time of the additional data with respect to the main data. The main data and the additional data are reproduced according to management data, the management data including link information for linking the main data and the additional data.

Abstract: The present invention relates to method for recording program specific information (PSI) for a recorded data stream in an optical disk such as a high-density digital versatile disk (HD-DVD) and providing the recorded PSI to a presenting device such as a digital television. This method writes program or stream specific information in a management data recording area of a high-density disk, and when the recorded data stream is reproduced, determines whether it is time to send the stream specific information, obtains stream specific information corresponding to a stream object being reproduced, or to be reproduced based on the determination result, and transmits the obtained stream specific information.