DocumentCode :
1491057
Title :
Design and implementation of a real-time MPEG-II bit rate measure system
Author :
Chang, Yu-Jen ; Pan, Alan T.
Author_Institution :
Digital Video & Multimedia R&D Div., Tatung Co., Taipei, Taiwan
Volume :
45
Issue :
1
fYear :
1999
fDate :
2/1/1999 12:00:00 AM
Firstpage :
165
Lastpage :
170
Abstract :
MPEG-II transport stream delivery over a network generally requires network jitters to be kept under ±500 nsec. When the MPEG packets are transmitted in other transport formats, such as ATM, the jitter problem may become difficult to manage. In this situation, the MPEG decoding process is often complicated due to MPEG-decoder buffer under-run and over-run, consequently creating video breakup or unsynchronized audio-visual playback. Thus, developing a test tool that can monitor MPEG-II bit rate on line is an important topic. This paper presents a simple but effective method to measure bit rate at the receiver end. This method uses an off-the-shelf MPEG de-multiplexer chip together with an embedded processor to govern the time-stamps embedded in the MPEG-II stream. The collected time stamps are further used to derive the bit rate. Furthermore, the jitters as measured by comparing local clocks against the received program clock reference values in embedded MPEG streams are also calculated. A hardware test environment is set up for experiment. The results shows the usefulness of this tool in deployment
Keywords :
asynchronous transfer mode; decoding; demultiplexing equipment; digital integrated circuits; digital video broadcasting; monitoring; real-time systems; synchronisation; television receivers; timing jitter; video signal processing; MPEG de-multiplexer chip; MPEG decoding; MPEG packets; MPEG-II transport stream delivery; buffer under-run; design; embedded processor; implementation; jitter; monitor; over-run; program clock reference values; real-time MPEG-II bit rate measure system; test tool; time-stamps; unsynchronized audio-visual playback; video breakup; Asynchronous transfer mode; Bit rate; Clocks; Decoding; Jitter; Real time systems; Semiconductor device measurement; Streaming media; Testing; Timing;
fLanguage :
English
Journal_Title :
Consumer Electronics, IEEE Transactions on
Publisher :
ieee
ISSN :
0098-3063
Type :
jour
DOI :
10.1109/30.754432
Filename :
754432
Link To Document :
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