Abstract: A storage medium which stores catalog information and a catalog information recording and/or playback apparatus and method therefor. Using the method, catalog information including a still picture and additional information together with audio data are recorded on a storage medium such as a digital versatile disk (DVD), which is an optical record storage medium, and the catalog information is played back during playback of the audio data, to thereby provide various information on the audio data. Also, the apparatus includes a buffer memory for catalog playback which maintains a predetermined standard and compatibility, and is capable of real-time reading during playback of the audio data, and automatically plays back the catalog content, corresponding to the playback state of the audio data, when there is no additional selection of a user.

Abstract: An apparatus which reproduces AV data using a markup document in an interactive mode includes a buffer which buffers the markup document, and a buffer manager which manages preloading of the markup document and provides buffering state information of the buffer in response to a report signal. The markup document may be provided via a network or form a data storage medium which includes information to control a buffering state of the markup document.

Abstract: An apparatus which reproduces AV data using a markup document in an interactive mode includes a buffer which buffers the markup document, and a buffer manager which manages preloading of the markup document and provides buffering state information of the buffer in response to a report signal. The markup document may be provided via a network or form a data storage medium which includes information to control a buffering state of the markup document.

Abstract: A method and apparatus for mixing audio streams, and an information storage medium that stores mixing information. The information storage medium includes at least one audio stream that contains a multiplicity of audio data obtained from respective multiple channels, and mixing information used to mix at least parts of the multiplicity of audio data. Accordingly, it is possible to mix and reproduce different types of channel components without changing the channel formats of different audio streams. Furthermore, it is also possible to perform dynamic mixing on multiple channel components, thus enabling adaptation to a change in audio content and characteristics thereof and thereby reproducing audio data more appropriately. In particular, since mixing information is described in interactive data allowing an interaction with a user, it is possible to provide the user with more applications.

Abstract: An apparatus reproduces AV data in an interactive mode, a method handles a user input, and an information storage medium stores information therefor. The information storage medium includes AV data and a markup document utilized to reproduce the AV data in an interactive mode. The markup document includes first event information of an occurrence of a key input event corresponding to a user action to inform, by default, an AV playback engine, which plays back the AV data. Accordingly, interactive contents may be controlled using a limited user input device.

Abstract: An apparatus reproduces AV data in an interactive mode, a method handles a user input, and an information storage medium stores information therefor. The information storage medium includes AV data and a markup document utilized to reproduce the AV data in an interactive mode. The markup document includes first event information of an occurrence of a key input event corresponding to a user action to inform, by default, an AV playback engine, which plays back the AV data. Accordingly, interactive contents may be controlled using a limited user input device.

Abstract: An apparatus reproduces AV data in an interactive mode, a method handles a user input, and an information storage medium stores information therefor. The information storage medium includes AV data and a markup document utilized to reproduce the AV data in an interactive mode. The markup document includes first event information of an occurrence of a key input event corresponding to a user action to inform, by default, an AV playback engine, which plays back the AV data. Accordingly, interactive contents may be controlled using a limited user input device.

Abstract: A storage medium which stores catalog information and a catalog information playback apparatus and method therefor. Using the method, catalog information including a still picture and additional information together with audio data are recorded on a storage medium such as a digital versatile disk (DVD), which is an optical record storage medium, and the catalog information is played back during playback of the audio data, to thereby provide various information on the audio data. Also, the apparatus includes a buffer memory for catalog playback which maintains a predetermined standard and compatibility, and is capable of real-time reading during playback of the audio data, and automatically plays back the catalog content, corresponding to the playback state of the audio data, when there is no additional selection of a user.

Abstract: A storage medium which stores catalog information and a catalog information recording and/or playback apparatus and method therefor. Using the method, catalog information including a still picture and additional information together with audio data are recorded on a storage medium such as a digital versatile disk (DVD), which is an optical record storage medium, and the catalog information is played back during playback of the audio data, to thereby provide various information on the audio data. Also, the apparatus includes a buffer memory for catalog playback which maintains a predetermined standard and compatibility, and is capable of real-time reading during playback of the audio data, and automatically plays back the catalog content, corresponding to the playback state of the audio data, when there is no additional selection of a user.

Abstract: A method and apparatus to focus on input items in an object picture embedded in a markup picture. An object interpretation engine for the object picture transmits a message for moving a focus to a markup interpretation engine for the markup picture in response to a key of a user input device pressed to move the focus. The markup interpretation engine focuses on one of the input items according to a predetermined order in response to the message.

Abstract: A DVD-Audio which includes a data zone for storing data to be reproduced and an information zone for storing information on the data to be reproduced. The information zone includes directories of a video title set (VIDEO_TS) and an audio title set (AUDIO_TS). The AUDIO_TS directory includes information on an audio manager (AMG) having information on audio titles. The data zone includes the audio titles each having an audio title set information (ATSI) followed by a plurality of contiguous audio objects (AOBs). The ATSI includes a plurality of audio stream attributes each having an audio coding mode, first to third quantization bit numbers, first to third sampling frequencies and decoding algorithm information relating to the number of audio channels. Each of the AOBs includes a plurality of audio packs recorded with audio data corresponding to the decoding algorithm stored in the audio stream attribute.

Abstract: A storage medium which stores catalog information and a catalog information playback apparatus and method therefor. Using the method, catalog information including a still picture and additional information together with audio data are recorded on a storage medium such as a digital versatile disk (DVD), which is an optical record storage medium, and the catalog information is played back during playback of the audio data, to thereby provide various information on the audio data. Also, the apparatus includes a buffer memory for catalog playback which maintains a predetermined standard and compatibility, and is capable of real-time reading during playback of the audio data, and automatically plays back the catalog content, corresponding to the playback state of the audio data, when there is no additional selection of a user.

Abstract: An information storage medium on which video data are recorded, includes: a plurality of clips that are recording units in which the video data are stored; and text data for subtitles which are recorded separately from the plurality of clips and overlappable with an image according to the video data and then outputtable, the text data including data for providing subtitles in at least one language.

Abstract: An information storage medium controls a multi-angle data reproducing apparatus by having a data structure including at least one clip for each angle, each angle clip being a data record unit of the multi-angle data for an angle. Each angle clip is divided into predetermined jumping units at jumping points and each is recorded in contiguous areas of the information storage medium. Using the clip jumping points as a link among the angle clips in which each angle clip is contiguously recorded provides efficient random access for reading the multi-angle data for angle change.

Abstract: A storage medium which stores catalog information and a catalog information recording and/or playback apparatus and method therefor. Using the method, catalog information including a still picture and additional information together with audio data are recorded on a storage medium such as a digital versatile disk (DVD), which is an optical record storage medium, and the catalog information is played back during playback of the audio data, to thereby provide various information on the audio data. Also, the apparatus includes a buffer memory for catalog playback which maintains a predetermined standard and compatibility, and is capable of real-time reading during playback of the audio data, and automatically plays back the catalog content, corresponding to the playback state of the audio data, when there is no additional selection of a user.

Abstract: A storage medium which stores catalog information and a catalog information recording and/or playback apparatus and method therefor. Using the method, catalog information including a still picture and additional information together with audio data are recorded on a storage medium such as a digital versatile disk (DVD), which is an optical record storage medium, and the catalog information is played back during playback of the audio data, to thereby provide various information on the audio data. Also, the apparatus includes a buffer memory for catalog playback which maintains a predetermined standard and compatibility, and is capable of real-time reading during playback of the audio data, and automatically plays back the catalog content, corresponding to the playback state of the audio data, when there is no additional selection of a user.

Abstract: A method of and an apparatus for reproducing data from the information storage medium, which supports an interactive mode, includes caching at least part of search information necessary to access mark-up language documents in a memory, and reading the mark-up language documents by referring to the cached search information.

Abstract: A storage medium which stores catalog information and a catalog information playback apparatus and method therefor. Using the method, catalog information including a still picture and additional information together with audio data are recorded on a storage medium such as a digital versatile disk (DVD), which is an optical record storage medium, and the catalog information is played back during playback of the audio data, to thereby provide various information on the audio data. Also, the apparatus includes a buffer memory for catalog playback which maintains a predetermined standard and compatibility, and is capable of real-time reading during playback of the audio data, and automatically plays back the catalog content, corresponding to the playback state of the audio data, when there is no additional selection of a user.

Abstract: A focusing method and a focusing apparatus in an interactive mode, and a data storage medium are provided. The focusing method includes identifying a domain of a resource to which a focused element refers when a command to move a focus between focusing layers is input from a user, and moving the focus by converting the focus-moving command into a command appropriate for the identified domain, when the identified domain is not a mark-up document domain.

Abstract: A DVD-Audio which includes a data zone for storing data to be reproduced and an information zone for storing information on the data to be reproduced. The information zone includes directories of a video title set (VIDEO_TS) and an audio title set (AUDIO_TS). The AUDIO_TS directory includes information on an audio manager (AMG) having information on audio titles. The data zone includes the audio titles each having an audio title set information (ATSI) followed by a plurality of contiguous audio objects (AOBs). The ATSI includes a plurality of audio stream attributes each having an audio coding mode, first to third quantization bit numbers, first to third sampling frequencies and decoding algorithm information relating to the number of audio channels. Each of the AOBs includes a plurality of audio packs recorded with audio data corresponding to the decoding algorithm stored in the audio stream attribute.