Appeal No. 1997-0918
Application 08/160,301
appellant points out that Yamaoka fails to disclose any
relationship for the most significant bit of the intermediate
data word to any structure employed for determining a
difference less than zero. In other words, appellant is only
arguing the features in the second clause or recitation of
dependent claims 32 and 35 relating to the “logical OR”
operation being dependent upon a carry out signal and the most
significant bit of said intermediate data word.
It is clear from the abstract of Zaidi, the summary of
the invention at column 2, the showings in Figures 3 and 4,
the discussion in the paragraph bridging columns 5 and 6, as
well as the discussion of Figures 3 and 4 at columns 7 and 8
of Zaidi, that a logical ORing-type of operation is performed
by the XNOR circuit 20 in Figure 3 and it is based upon a
carry out signal from the ALU 12 and the MSB bits in
accordance with the features recited in independent claims 32
and 35 on appeal.
Turning next to the recitation of the common features
recited in claims 33 and 36, appellant indicates at page 7 of
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