MEDIA DATA TRANSMISSION APPARATUS AND METHOD, AND MEDIA DATA RECEPTION APPARATUS AND METHOD IN MMT SYSTEM

摘要

PURPOSE: A media data transmitting device for an MMT system, a method thereof, a media data receiving device, and a method thereof are provided to supply basic timing information required for maintaining synchronization between different media. CONSTITUTION: A receiving unit(510) receives a delivery layer packet. A depacketizing unit(520) generates encapsulation layer data by depacketizing the delivery layer packet. A decapsulating unit(530) generates an encoded media stream by decapsulating the encapsulation layer data and extracts timing information. A decoder(550) decodes the encoded media stream. [Reference numerals] (505) Output device; (510) Receiving unit; (520) Depacketizing unit; (530) Decapsulating unit; (540) Buffer; (550) Decoder; (560) Rendering buffer; (570) Control unit; (AA) D-layer packet;