Multimedia data synchronization method and system

摘要

A multimedia data system comprising a synchronization unit. The synchronization unit receives a demodulated bitstream, checks whether a FAW pattern corresponding to a candidate of the bitstream exists, checks whether an additional information corresponding to the candidate of the bitstream is valid when the FAW pattern exists, determines a hit weighting corresponding to the candidate according to the checking result, determines whether the hit weighting meets a criterion and outputs a synchronization signal when the hit weighting meets the criterion.

主权项

1. A synchronization method, comprising:
receiving a bitstream; checking whether an FAW pattern corresponding to a candidate of the bitstream exists; checking whether an additional information corresponding to the candidate of the bitstream is valid when the FAW pattern exists, wherein the additional information is a control bit following the FAW pattern of the corresponding candidate; determining a valid control bit sequence over a number of 16 frames by counting the successive 0s and the successive 1s from a starting point, wherein a valid control bit sequence comprises a rotation combination of 8 successive 0s and 8 successive 1s over the number of 16 frames and wherein both the 8 successive 0s and the 8 successive 1s are not started from the starting point of the valid control bit sequence; and determining a hit weighting corresponding to the candidate according to the checking result, and if the hit weighting corresponding to the candidate meets a criterion, synchronization of the bit stream is completed.