Digital transmission system with enhanced data multiplexing in VSB transmission system
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United States of America Patent
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Apr 24, 2012
Grant Date -
Feb 5, 2009
app pub date -
Oct 9, 2008
filing date -
Aug 20, 2001
priority date (Note) -
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Abstract
A digital VSB transmission system and enhanced data multiplexing method are disclosed. When ½ enhanced data coded at a rate of ½ and ¼ enhanced data at a rate of ¼ are transmitted, timing jitter in MPEG of VSB receiver can be reduced and the size of input buffer in MPEG decoder of the VSB receiver can be reduced by multiplexing the ½ enhanced data packet and the ¼ data packet at predetermined intervals. Multiplexing the ½ enhanced data packet and the ¼ data packet by grouping increases the reception performance of the ¼ enhanced data. Multiplexing the ½ enhanced data packet and the ¼ data packet alternatively reduces the MPEG timing jitter in the VSB receiver and increases the reception performance of the ¼ enhanced data.
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