摘要:
Provided are a method and apparatus for enabling a main stream to refer to an elementary stream existing in another simple aggregation format (SAF) session by using a global ID during provision of a light application scene representation (LASeR) service, and a LASeR service providing apparatus. In order for a main stream to refer to an elementary stream included in an SAF session different from an SAF session in which the main stream is included without a change of existing LASeR and SAF stream structures, the main stream for a LASeR service uses a global stream ID of the elementary stream as a reference value. Accordingly, the elementary stream included in the SAF session different from the SAF session of the main stream can be effectively referred to without need to create a separate apparatus or change an existing apparatus even when a global ID included in a LASeR scene description is used as in the conventional art.
摘要:
Provided are an extended Simple Aggregation Format (SAF) packet to support voluminous media data and a method of generating the extended SAF packet. The extended SAF packet includes an SAF access unit including an SAF fragment unit obtained by dividing the voluminous media data into a data size suitable for transmission through an SAF packet and a field that provides information about the type of the SAF fragment unit, and an SAF packet header including a field that provides information about whether the SAF access unit carries the SAF fragment unit. Thus, it is indicated that the SAF packet carries the SAF fragment unit from information of the SAF packet header, and the type of the SAF fragment unit, a sequence number of the SAF fragment unit and a total access unit length from information of the SAF access unit.
摘要:
Provided is an apparatus and method for storing link information of DMB interactive contents and a DMB receiving terminal system using the same. The apparatus includes: a link information processing unit for extracting link information of digital multimedia broadcasting (DMB) interactive contents which is being produced in a DMB receiving terminal system; and a storing processing unit for storing the extracted link information in a storing medium.
摘要:
Provided is a Simple Aggregation Format (SAF) synchronization packet structure including an SAF synchronization packet header and an SAF synchronization packet payload and multiplexing diverse element streams. The header includes a field for providing time information needed when objects transmitted as a SAF synchronization layer packet payload compose a scene in a decoder; and the payload includes a field for providing information on the type of an access unit and a field for providing identification information of an elementary stream where the access unit belongs. Since the present invention can multiplex diverse elementary streams effectively and simply into one data stream, synchronized data transmission is possible. Since the present invention accommodates a synchronization layer packet of the MPEG-4 system, it can be easily integrated with the MPEG-4 system and utilize the advantage of the MPEG-4 synchronization layer packet such as the concept of an access unit or a degradation priority.
摘要:
Provided are an apparatus and method for describing and processing digital items using a scene representation language. The apparatus includes a digital item method engine (DIME) unit for executing components based on component information included in the digital item; and a scene representation unit for expressing scenes of a plural number of media data included in the digital item in a form of defining spatio-temporal relations and allowing the media data to interact with each other. The digital item includes scene representation having representation information of the scene, and calling information for the digital item express unit to execute the scene representation unit in order to represent the scene based on the scene representation information at the scene representation unit.
摘要:
In a device for editing and authoring object-based AV (audio and visual) contents using the MPEG-4 method, an object-based MPEG-4(moving picture experts group 4) contents editing and authoring device (200) comprises: an extensible description generator (120) for receiving either of an MPEG-4 textual format or internal data structure information of object-based MPEG-4 contents, and MPEG-7(moving picture experts group 7) descriptions of the MPEG-4 contents, and generating an XML (extensible markup language) based textual format file including the MPEG-7 descriptions; an extensible description/binary converter for receiving the XML based textual format file including the MPEG-7 descriptions generated by the extensible description generator (120), and generating them as a binary file; and an XML based contents storage unit (110) for storing the XML based textual format file generated by the extensible description generator (120) and the binary file generated by the extensible description/binary converter.
摘要:
Provided are a method and apparatus for displaying lightweight applications scene representation (LASeR) content. A LASeR markup language (ML) that is based on a LASeR binary stream or a LASeR extensible markup language (XML) is parsed so as to generate a LASeR document object model (DOM). A LASeR application program interface (API) is used to generate a LASeR DOM object tree. A LASeR player accesses the LASeR DOM to display LASeR DOM scene information.
摘要:
Provided are a terrestrial DMB contents editing and authoring apparatus and a terrestrial DMB contents providing system having the same. The terrestrial DMB contents providing system includes: a terrestrial DMB contents transforming apparatus for transforming a terrestrial digital television (DTV) contents to a predetermined data format to transmit as a terrestrial DMB; a terrestrial DMB contents editing and authoring apparatus for providing an interface to a user to edit and author the transformed format of terrestrial DMB interactive contents, and editing and authoring the terrestrial DMB interactive contents according to temporal/spatial arrangement and behavior events of objects based on editing and authoring information of the user; a terrestrial DMB contents storing apparatus for storing the terrestrial DMB interactive contents; and a terrestrial DMB contents transmitting apparatus for transmitting the stored terrestrial DMB contents to be suitable to a terrestrial DMB transmit format according to a transmit schedule.