Stream data processor

A streaming data and processor technology, which is applied in the field of unpacking packaged streaming data, can solve the problems of increasing the number of memory accesses and hindering the processing capacity of streaming data processors, and achieve the effect of improving efficiency
CN1960335AInactive Publication Date: 2007-05-09NEC ELECTRONICS CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NEC ELECTRONICS CORP
Publication Date
2007-05-09
Estimated Expiration
Not applicable · inactive patent

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Abstract

A stream data processor includes a PES buffer for storing PES data, a decoder for retrieving the PES data from the PES buffer and decoding the PES data, a boundary detector for detecting a packet boundary of a PES packet of the PES data, and a packet analyzer for analyzing a PES packet header included in the stream data. The packet analyzer analyzes the packet header in response to the detection of the packet boundary. The decoder suspends retrieving the PES data from the PES buffer in response to the detection of the PES packet boundary by the boundary detector. Further, the encoder resumes retrieving the PES data from the PES buffer according to a result of the analysis of the packet header by the packet analyzer.
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Description

technical field

[0001] The present invention relates to a technique for packetizing streaming data and a technique for unpacking the packetized streaming data. Background technique

[0002] An MPEG-2 Program Stream (PS) is formed by multiplexing a number of PESs (Packetized Elementary Streams), which are Packetized Elementary Streams (ES) consisting of encoded audio or video data . Likewise, MPEG-1 PS and MPEG-2 Transport Stream (TS) are formed by multiplexing packetized stream data. Generally, the operation of aggregating or transmitting moving picture stream data is performed using encoded stream data after packetization.

[0003] Fig. 8 shows the structure of a conventional stream data processor 8 for encoding and decoding MPEG-2PS. The PES buffer 811, packet decomposer 812, ES buffer 813, and decoder 814 have functions of inputting PES stream data (hereinafter simply referred to as PES data) and outputting audio or video data encoded by the PES data.

[0004] The PES...

Claims

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