Patent ID: 8009742

Claim:
A system for retransmitting an Internet protocol packet for terrestrial digital multimedia broadcasting (DMB) service, the system comprising: a transmitting apparatus for: encoding video, audio, and data information according to an MPEG-4 scheme, individually encapsulating the encoded information into corresponding MPEG-4 synchronization layers (SL), and individually carrying the encapsulated video, audio, and data information, together with Program Specific Information (PSI), by packets of an RTP/RTCP (Real-Time Transport Protocol/Real-Time Transport Control Protocol) scheme, wherein a single object clock reference information (OCR) is added to one of the video, audio, and data information to be transmitted; and a receiving apparatus for receiving each of the packets from the transmitting apparatus, and performing a decapsulation based on the RTP/RTCP scheme, an MPEG-4 SL decapsulation and a decoding with respect to each received packet, thereby restoring the original video, audio, and data information for the DMB service extracting the OCR information and using the OCR information for synchronization of a system clock and for control of a buffer containing corresponding data.