Appeal No. 95-3811
Application No. 08/249,081
final rejections of claims 3-6 and 13, which constitute all
the claims remaining in the application.
Representative claim 13 is reproduced below:
13. A method for image coding a video signal having a known
frame rate comprising the steps of:
coding and quantising the video signal to effect
digitalisation and compression of the signal to form a bit
stream having a bit rate determined by the transmission line
on which the bit stream is to be transmitted;
storing the bit stream in a buffer store such that
(GOB - 1 + MB/33)/12 x (k1 + g) R/fo + bR/for
where GOB is the number of the block group,
MB is the number of the macroblock, k1 is the number
of skipped frames, which are determined by the coder,
fo is the frame rate of video signal,
R is the bit stream rate,
g takes into account when the coding is terminated,
and bR/fo is the minimum allowed content in the
buffer;
monitoring the content of the buffer store;
sensing the rate of the bit stream at the output of the buffer
store, calculating the ideal buffer store content, and
adjusting the step height in the quantiser as a function of
the difference between the monitored and ideal buffer store
contents.
There are no references relied by the examiner.
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