Digital transmission system with enhanced data multiplexing...

Details Digital transmission system with enhanced data multiplexing... Digital transmission system with enhanced data multiplexing...

H - Electricity

04

N

H04N 21/434 (2011.01) H04N 7/64 (2006.01)

Patent

CA 2461055

A digital VSB transmission system and enhanced data multiplexing method are disclosed. When 1/2 enhanced data coded at a rate of 1/2 and 1/4 enhanced data at a rate of 1/4 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 1/2 enhanced data packet and the 1/4 data packet at predetermined intervals. Multiplexing the 1/2 enhanced data packet and the 1/4 data packet by grouping increases the reception performance of the 1/4 enhanced data. Multiplexing the 1/2 enhanced data packet and the 1/4 data packet alternatively reduces the MPEG timing fitter in the VSB receiver and increases the reception performance of the 1/4 enhanced data.

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