Device and method for demultiplexing received transport stream in digital broadcasting receiver

An apparatus for receiving broadcasting data in a wireless terminal with a digital broadcasting receiver, comprising:

• a broadcasting receiver for receiving and demodulating a signal of a set broadcasting channel and outputting a packet data stream;
• a multimedia processor for analyzing the packet data stream and generating decoded video and audio data;
• a display unit for displaying the decoded video data;
• and
• a speaker for reproducing the decoded audio data,
• wherein the multimedia processor comprises:
• a demultiplexer comprising a buffer for buffering the packet data stream and processors parallel connected to the buffer, the processors processing the buffered packet data in parallel and performing demultiplexing;
• a video decoder for decoding demultiplexed video Elementary Stream (ES) data;
• and
• an audio decoder for decoding demultiplexed audio ES data.

A method for demultiplexing packet data constructed by a packet header and a payload in a digital broadcasting receiver, comprising the steps of:

• buffering input packet data;
• checking a buffered packet header and determining if a payload is adaptation information;
• processing buffered adaptation information if the payload is the adaptation information;
• checking the payload if the payload is not the adaptation information, determining if a Packetized Elementary Stream (PES) header is included in the payload, checking a size of the PES header included in the payload if the PES header is included, determining if audio/video data is included, setting a buffering position of the audio/video data if the audio/video data is included, and processing the PES header;
• and
• processing the audio/video data of the payload after the PES header is processed or if the PES header is not included in the payload of the packet data, generating an audio/video Elementary Stream (ES), and transferring the generated audio/video ES to an associated decoder.

A method for processing broadcasting data in a wireless terminal with a digital broadcasting receiver, comprising the steps of:

• performing a broadcasting data reception operation for receiving and demodulating a signal of a set broadcasting channel and outputting a packet data stream;
• performing a multimedia data processing operation for analyzing the packet data stream and generating decoded video and audio data;
• and
• reproducing the decoded vide and audio data,
• wherein the step of performing the multimedia data processing operation comprises the steps of:
• buffering the packet data stream, checking a packet header and a payload of buffered packet data, processing the buffered packet data in parallel, and performing demultiplexing into video and audio Elementary Stream (ES) data;
• and
• decoding the demultiplexed video and audio ES data.