Appeal No. 99-0872
Application 08/885,399
are the simple clock and (perhaps) enable signals
required for the integrated scan circuits. The need
for additional high voltage DACs or video amplifiers
is eliminated. (Emphasis added.)
The statements of the appellants, while logical and
convincing on its face, are not commensurate in scope with
what the appellants have claimed. None of the claims recite
the specially structured single chip driver circuit of the
type discussed in the above-quoted text, which eliminates the
need for high voltage DACs or video amplifiers. All of the
claims do require the presence of digital-to-analog circuitry
on single crystal substrates, but that recitation is broad
enough to cover an integration of multiple and complex DACs
and video amplifiers on a single chip, something the
appellants seek to eliminate. The breadth of the claims cover
the case where multiple high voltage DACs or video amplifiers
are used but just all integrated on a single chip.
The examiner is correct that if the prior art teaches use
of at least 32 data input lines, with use of multiple high
voltage DAC’s or video amplifiers, then simply integrating
those components on a single chip would have been obvious to
one with ordinary skill in the art, citing In re Larson, 144
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