Appeal No. 1997-3853
Application No. 08/196,658
the damage to the signal is small. We disagree. Han states
(column 4, lines 40-68) that when the counted value of input
pulses is less than a set threshold value, the pseudo control
signal is substituted. Although Han discloses that the
threshold may be set slightly lower than normal, Han explains
that the reason it may be lower than normal is because "damage
to two or three control pulses does not substantially affect
picture quality" (column 4, lines 52-53). Therefore, even if
one were to interpret Han as allowing the original control
signal to be used when damaged, the skilled artisan would find
no need to compensate such a signal, since a damaged signal is
used only when the amount of damage does not affect the
quality of the picture.
Furthermore, the examiner contends (Answer, page 4) that
"Quintus provides sufficient motivation for using his gain
control and amplification means of the range selection circuit
and post-amplifier for the same purpose as in the instant
invention: amplification for compensation for a weakened
signal." We do not find in the references any motivation for
combining Quintus with Han, and we are not persuaded by the
rationale provided by the examiner. Quintus does not involve
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