Appeal No. 1996-0485 Page 7
Application No. 08/139,456
add noise to the signal before quantizing (applicant admitted
prior art, page 3, lines 20-25).” (First Rejection at 2-3.)
For his part, the appellant “denies ... that the
specification includes any admission that it is known to add
noise to YUV-format image data before YUV-to-RGB conversion in
the claimed context (or that Appellant has otherwise made such
an admission).” (Reply Br. at 4.) The examiner deems that
no response to this denial is necessary. (Paper 17.)
We cannot find that the references teach or would have
suggested the means for adding noise of claims 1 and 8 or the
step of adding noise of claim 16. Claims 1, 8, and 16 recite
in pertinent part the following limitations:
... adding noise to at least one of the Y component
bits, the U component bits, and the V component bits
of each of the input pixels, thereby generating a
dithered input pixel comprising a first number of
bits for said each of the input pixels;
... quantizing each said dithered input pixel ....
In short, the claims specify dithering image data, which are
in the YUV format, before quantizing the data.
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