| 摘要 |
PURPOSE: A synchronization method in hybrid transmission is provided to synchronize MMT(MPEG Multimedia Transport Layer) data by utilizing a storage unit. CONSTITUTION: When a first MMT data or a second MMT data is delayed, a reception terminal determines whether a delay value is arranged at the size limitation of a buffer(405). When the predicted delay value is larger than a predetermined size or is arranged at the size limitation, the reception terminal synchronizes the MMT data generating the overflow of the buffer by utilizing a storage unit. [Reference numerals] (310) Transmission device 1 (Broadcasting network server); (315) Transmission device 2 (Broadband network server); (401) First MMT packet (AV stream); (403) Second MMT packet (Widget); (405) Determine whether a predicted delay value is larger than or equal to a predetermined size or a buffer size is reached to the limit; (407) Store in a first MMT asset(AV) storage when the predicted delay value is larger than or equal to the predetermined size, or the buffer size is reached to the limit; (409) Extract the first MMT asset stored in the storage to a buffer to be synchronized when a delay-generated second MMT asset is arrived; (411) Regenerate; (AA) Reception terminal (Client) |
