Appeal No. 2004-0593
Application No. 09/606,688
No further discussion of what is “matched” or “substantially
matched” appears in the specification, to our knowledge. Indeed,
this passage from the specification appears to undercut the
appellant’s argument that IC device transistors are not ordinarily
“matched” within the broadest reasonable interpretation of the
word.
Similar to the position taken by the examiner, it would
appear that the appellant’s own specification indicates that
transistors on the same integrated circuit are generally matched
(as opposed to discrete components), unless otherwise stated.
Rempfer’s transistors appear to be manufactured on the same IC.
Consequently, we agree with the examiner that Rempfer’s
transistors are properly found to be “matched” or “substantially
matched.” The appellant has provided no convincing evidence to
the contrary.
The appellant next urges that claims 1, 7, 13, and 25 recite
a buffer/voltage-mirror arrangement adapted to cause an output
voltage on said output to mirror an input voltage on said input by
a predetermined factor. Rempfer, it is said, discloses an
amplifier configuration wherein the W/L ratio of the first and
second transistors is N times larger than the W/L ratio of the
third and fourth transistors. (Appeal Brief, page 6, line 27-page
9
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