Video compression using a signal transmission chain...

Details Video compression using a signal transmission chain... Video compression using a signal transmission chain...

H - Electricity

04

N

H04N 7/50 (2006.01) H04N 7/26 (2006.01)

Patent

CA 2533221

An MPEG-2 or other compressed video stream (CP) can be manipulated as separate information bus (IB) and coefficient (CP*) streams. The information bus stream (IB) contains motion vector information but also information derived from a previous decoding operation (14, 18) for use in a subsequent coding operation (22). Processing in the coefficient domain enables bit rate conversion without decoding to the pixel level and also simplifies the combination of MPEG layers.

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