Abstract: A device for synchronizing data processing, which receives input data comprising a plurality of data blocks comprising plural data sequences, and data block boundary detecting means; reference time detecting means for detecting reference time information required for updating a reference of synchronization; demultiplexing means for demultiplexing the input data; N pieces of means for detecting data processing/output time from one of the data sequences that shows a time to process and output data; and means for synchronizing data processing/output, according to the data processing/output time information detected by the N pieces of means for detecting data processing/output time, so that the N pieces of data processing/output means are synchronized with each other and process and output the data in the respective data sequences in correct timings along the temporal order.