Abstract: An exemplary embodiment of a synchronization device is provided. The synchronization device includes a memory, a demultiplexer, a comparator, and a sampling rate converter. The synchronization device has a system time clock (STC) and generates an output data with a first sampling rate. The demultiplexer receives a bit stream and extracts a packetized elementary stream (PES) from the bit stream. The demultiplexer writes the PES into the memory. The comparator obtains a presentation time stamp (PTS) from the PES and compares the PTS and the STC. The sampling rate converter has a converting factor, samples the PES in the memory, and generates the output data according to the PES. The sampling rate converter changes the converting factor according to the compared result of the comparator.

Abstract: An exemplary embodiment of a synchronization device is provided. The synchronization device includes a memory, a demultiplexer, a comparator, and a sampling rate converter. The synchronization device has a system time clock (STC) and generates an output data with a first sampling rate. The demultiplexer receives a bit stream and extracts a packetized elementary stream (PES) from the bit stream. The demultiplexer writes the PES into the memory. The comparator obtains a presentation time stamp (PTS) from the PES and compares the PTS and the STC. The sampling rate converter has a converting factor, samples the PES in the memory, and generates the output data according to the PES. The sampling rate converter changes the converting factor according to the compared result of the comparator.

Abstract: A broadcast device is disclosed, comprising a first memory unit, a demultiplexer unit, first and second flip-flop units, and first and second playback units. The demultiplexer unit generates an audio bit stream, which comprises a plurality of data packages, according to a transport stream. The demultiplexer unit writes the data packages into the first memory unit with a writing pointer. The first flip-flop unit reads and stores the data packages from the first memory unit. The first playback unit reads the data packages from the first flip-flop unit and decompresses the data packages for generating a first digital playback signal. The second flip-flop unit reads and stores the data packages from the first memory unit. The second playback unit reads the data packages from the second flip-flop unit and samples the data packages to generate a second digital playback signal to an external receiver outside of the broadcast device.