Appeal No. 96-0553
Application 08/020,993
to the operation of the prior art Figure 1 to the extent that
it is relied upon in Tanaka in conjunction with each of the
respective embodiments.
We make reference to column 2, lines 20 to 33 and lines
53 through 57; column 3, line 49 through at least column 5,
line 24 for a basic understanding of prior art Figure 1 as it
applies to the claimed correlation feature. These portions of
Tanaka indicate that all digitized television signals are divided
into blocks, each of which is comprised of a rectangular array
composed of MXN pixels arranged in M columns and N rows. All
signals are processed in every embodiment including the prior art
embodiment in Tanaka in a step-wise continuous manner on a block-
by-block basis. It is noted that even in picture memory portion
54, which relates to the motion compensation feature of prior art
Figure 1, this memory stores current frame information as well as
previous frame information to affect that compensation. Although
this compensation per se is not pertinent to the issues on
appeal, we make mention of this memory 54 because it begins to
set a proper context for later considerations. The discussion
beginning at the bottom of column 3 as it pertains to prior art
Figure 1 of Tanaka indicates that the quantization step-size Qb
is calculated on a continuous or regular basis on the basis of n
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