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Design and implementation of transport stream demultiplexer in HDTV decoder SoC

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4 Author(s)
Chunrong Zhang ; Inst. of Image Commun. & Inf. Process., Shanghai Jiao Tong Univ., China ; Shibao Zheng ; Feng Wang ; Chi Yuan

A novel architecture of transport stream demultiplexer (TS Demux) in high definition television (HDTV) decoder is presented in this paper, which utilizes a cooperation scheme between hardware and software. TS parsing is decomposed into two phases: filtering and analyzing, which are fulfilled by hardware and software respectively. Meanwhile, the hardware filtering is controlled by the software. Two filtering layers, PID and section filtering, are supported by hardware, which can extract any format data in TS stream quickly. Compared to the current parsing scheme for TS packets, TS Demux discussed here needs less CPU resource and is easy to update as well.

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Consumer Electronics, IEEE Transactions on  (Volume:51 ,  Issue: 2 )