Appeal No. 1997-3956
Application 08/583,960
USPQ2d at 1239, citing W. L. Gore & Assocs., Inc. v. Garlock,
Inc., 721 F.2d at 1551, 1553, 220 USPQ at 311, 312-313. In
addition, our reviewing court requires the PTO to make
specific findings on a suggestion to combine prior art
references. In re Dembiczak, 175 F.3d 994, 1000-01, 50 USPQ2d
1614, 1617-19 (Fed. Cir. 1999).
We fail to find that the Examiner has provided evidence
as to why one of ordinary skill in art would have been led to
provide an upper comparison voltage generating means for
dividing reference voltage into a plurality of large level
regions with first voltage-dividing elements, a middle
comparison voltage generating means for dividing said large
level regions to which the analog input voltage is determined
to belong by said upper determining means, into a plurality of
middle-level regions with second voltage-dividing elements,
and a third voltage dividing element including one of the
capacitor string comprising a plurality of series-connected
capacitors and resistor string comprising a plurality of
series-connected resistors, each resistor of the resistor
string having a high resistance sufficient to avoid
-9-
Page: Previous 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Next
Last modified: November 3, 2007