Abstract: A method for reproducing AV data in an interactive mode using a markup document includes dividing an operation state of a presentation engine for reproducing the markup document into a start state, a reproduction state, a pause state, and a stop state. In the reproduction state, the presentation engine performs a preloading process for reading the markup document into a memory, a loading process for interpreting the markup document and loading the markup document on a display screen, and an interacting process for facilitating an interaction between the markup document and a user.

Abstract: A method for reproducing AV data in an interactive mode using a markup document includes dividing an operation state of a presentation engine for reproducing the markup document into a start state, a reproduction state, a pause state, and a stop state.

Abstract: A method of verifying that a disc recording and reproducing apparatus normally generates or updates defect management area (DMA) information in a supplementary spare area extension mode, and a test apparatus therefore. The method includes extending the supplementary spare area of a test disc in the recording and reproducing apparatus using the test disc with test reference information and generating test information from the test disc; and comparing reference information expected from the test reference information with the test information and providing the result of verification of the test information. Accordingly, a DMA information generation or updating function of the recording and reproducing apparatus upon the extension of the supplementary spare area can be easily verified.

Abstract: A recording and/or reproducing apparatus for use with an information storage medium including ENAV buffer configuration information includes: an ENAV buffer in which an ENAV file is loaded; and an ENAV engine which interprets and reproduces the ENAV file, wherein the ENAV engine allocates at least a portion of the ENAV buffer as an updateable markup area on the basis of ENAV buffer configuration information, reads the ENAV file, and loads the ENAV file in the ENAV buffer.

Abstract: A recording and/or reproducing apparatus for use with an information storage medium including ENAV buffer configuration information includes: an ENAV buffer in which an ENAV file is loaded; and an ENAV engine which interprets and reproduces the ENAV file, wherein the ENAV engine allocates at least a portion of the ENAV buffer as an updateable markup area on the basis of ENAV buffer configuration information, reads the ENAV file, and loads the ENAV file in the ENAV buffer.

Abstract: A recording and/or reproducing apparatus for use with an information storage medium including ENAV buffer configuration information includes: an ENAV buffer in which an ENAV file is loaded; and an ENAV engine which interprets and reproduces the ENAV file, wherein the ENAV engine allocates at least a portion of the ENAV buffer as an updateable markup area on the basis of ENAV buffer configuration information, reads the ENAV file, and loads the ENAV file in the ENAV buffer.

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 information storage medium storing at least one still image data clip including: at least one still image data file; still image clip information including information on a position and attributes of still images in the at least one still image data file; and still image sequence information including information on presentation modes and a presentation time for the still images in the at least one still image data file.

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 information storage medium which stores data structures supporting multi-angles includes clip AV streams for respective angle data of multi-angle motion picture data. As additional information for each clip AV stream, clip information is recorded on a separate storage area from that of the clip AV streams. The clip information includes jumping-point information for jumping into another angle. Each of the clip AV streams may be recorded in a contiguous recording area, or divided into smaller interleaved units that are interleaved with units of the other clip AV streams.

Abstract: A method of verifying defect management area (DMA) information of an optical disc upon initialization without certification, and a test apparatus for performing the same. The method includes generating as test information, defect management information, which is generated after performing initialization without certification on a blank test disc to which no data is written, and verifying the test information using reference test information for the initialization without certification to provide a test result. Accordingly, it can be easily verified that a recording and reproducing apparatus properly translates and processes DMA information which is generated after initialization without certification, using a blank test disc.

Abstract: An information storage medium for storing data structures supporting multi-angles is provided. The information storage medium includes clips as recording units of motion picture data for respective angles. As additional information for each clip, clip information is recorded on a separate storage area from the clip. The clip information includes jumping-point information for jumping into another angle. At least one clip for a desired angle can be divided and recorded in contiguous recording area of the information storage medium, or can be divided into smaller interleaved units, multiplexed, and recorded. Therefore, it is possible to easily track and reproduce motion picture data for multi-angle and also facilitate recording area arrangement when one clip is recorded in a contiguous storage area.

Abstract: An information storage medium on which multi-angle data is recorded includes at least two clips in each of which video object data for an angle of the multi-angle data is recorded. The at least two clips are recorded in contiguous areas of the information storage medium.

Abstract: Provided are a method to display a mark-up document according to a parental level, a method and an apparatus for reproducing AV data in an interactive mode, and a data storage medium. The data storage medium includes the AV data, and mark-up documents to reproduce the AV data in an interactive mode. Here, among the mark-up documents, a start-up document contains information on the mark-up documents to be displayed according to a set parental level.

Abstract: A method of verifying that defect management area (DMA) information is normally generated or updated upon reinitialization with certification in a disc recording and reproducing apparatus, and a test apparatus for performing the method. The method includes performing reinitialization with certification in a recording and reproducing apparatus using test reference information and a test disc with physical defects, generating test information from the defect management information which is generated after the reinitialization, comparing reference information expected from the test reference information and physical defects with the test information, and providing the result of verification of the test information. Accordingly, it can be easily understood whether the DMA generation or updating function is normally performed in the disc recording and reproducing apparatus in a mode of reinitialization with certification.

Abstract: An information storage medium which stores data structures supporting multi-angles includes clip AV streams for respective angle data of multi-angle motion picture data. As additional information for each clip AV stream, clip information is recorded on a separate storage area from that of the clip AV streams. The clip information includes jumping-point information for jumping into another angle. Each of the clip AV streams may be recorded in a contiguous recording area, or divided into smaller interleaved units that are interleaved with units of the other clip AV streams.

Abstract: Browser graphics can be displayed according to an aspect ratio by providing a browser graphic storage unit storing browser graphics of different aspect ratios according to their aspect ratio, and an initialization file storage unit storing an initialization file including predetermined aspect ratio information. An aspect ratio information extractor extracts the aspect ratio information from the stored initialization file and a browser graphic selector selects a browser graphic from the stored browser graphics of different aspect ratios that corresponds to the extracted aspect ratio. A browser graphic display unit displays the selected browser graphic. Browser graphics having various aspect ratios are used to prevent the browser graphics from being distorted when displayed on various types of display devices, and to display the browser graphics corresponding to a default aspect ratio set by a contents producer, a request of a user, or characteristics of a display device.

Abstract: A method of verifying that defect management area (DMA) information is generated or updated normally when a disc recording and reproducing apparatus performs reinitialization with secondary defect list (SDL) conversion without certification, and a test apparatus for performing the method. The method includes performing reinitialization without certification in the recording and reproducing apparatus using a test disc with test reference information and generating test information from the defect management information which is generated after the reinitialization, and comparing reference information expected from the test reference information with the test information and providing the result of verification of the test information. Accordingly, a user can test the DMA generation or updating function of a given disc recording and reproducing apparatus within a short period of time, and the cost for producing and providing the test disc can be saved.

Abstract: A method of verifying defect management area (DMA) information of an optical disc upon initialization without certification, and a test apparatus for performing the same. The method includes generating as test information, defect management information, which is generated after performing initialization without certification on a blank test disc to which no data is written, and verifying the test information using reference test information for the initialization without certification to provide a test result. Accordingly, it can be easily verified that a recording and reproducing apparatus properly translates and processes DMA information which is generated after initialization without certification, using a blank test disc.

Abstract: Provided are a method to display a mark-up document according to a parental level, a method and an apparatus for reproducing AV data in an interactive mode, and a data storage medium. The data storage medium includes the AV data, and mark-up documents to reproduce the AV data in an interactive mode. Here, among the mark-up documents, a start-up document contains information on the mark-up documents to be displayed according to a set parental level.