Appeal No. 2003-2031
Application 09/225,193
Invention
The invention relates to compression of digital visual
images. In particular, the invention relates to a control
strategy for dynamically encoding multiple streams of video data
in parallel for multiplexing onto a constant bit rate channel.
The control strategy comprises a strategy which allow individual
encode bit rates to be dynamically adjusted within each video
data stream based in part on relative complexity of the multiple
streams of video data. See page 1 of Appellants’ specification.
Independent claim 1 present in the application is
representative of Appellants’ claimed invention and is reproduced
as follows:
1. A method for processing multiple streams of video frames
comprising:
analyzing said multiple streams of video frames to determine
relative complexity of the video frames comprising said multiple
steams of video frames, wherein said analyzing comprises
obtaining picture statistics on said relative complexity of said
video frames prior to encoding of said multiple streams of video
frames;
encoding said multiple streams of video frames in parallel
using said relative complexity of the video frames, wherein said
encoding comprises adaptively encoding said multiple streams of
video frames with change in said relative complexity;
during said encoding, analyzing each stream of video frames
to derive coding statistics on at least one characteristic
thereof, said coding statistics comprising at least one of an
intraframe characteristic or an interframe characteristic, and
2
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