Appeal No. 1999-0487
Application No. 08/554,425
disagrees.
Claims 5 and 8 differ from claims 1 and 7 in that instead
of reciting that the image data is from a sequence of
angiographic images, the image data is recited as being “of a
type wherein, within a predetermined domain that includes said
range, average compression ratio varies linearly with respect
to quantization factor.” As noted above, it is this property
of the image data which is critical to the claimed method.
Angiographic image sequences have this property. Neither Mita
nor Yonekawa teaches or suggests that image data exists which
has the claimed relationship. Without recognition of this
relationship, the applied prior art does not teach or suggest
that a quantization factor can be determined using linear
interpolation between just two values to achieve a desired
compression ratio. Therefore, we also do not sustain the
examiner’s rejection of claims 5 and 8.
Although dependent claims 2-4 and 6 are rejected using
the additional teachings of Chen, Daher and Wallace, or
Greenberg, none of these additionally applied references
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