Appeal No. 1998-0662
Application No. 08/561,223
Hanmura teaches the use of one A/D converter as common in this
art with respect to (1) supra, that Hanmura teaches it as
known to use a common enabling line with respect to (2) supra,
that it would be obvious to use masking with respect to (3)
supra, and that Stoltz teaches the well known use of DMD’s
with respect to (4) supra. The Examiner deems the combination
of these elements to have been obvious to one of ordinary
skill in the art at the time of the invention to eliminate
extra elements (second A/D converter) thus reducing cost,
simplify the circuit (reducing the number of address lines via
a common connection and eliminate extra addressing via
masking), and substituting one flat panel device (DMD of
Stoltz) for another (LCD of Masumori) as the SM. (Answer-
pages 4-7.)
Appellants argue that Masumori’s use of two A/D
converters teaches away from being combined with Hanmura
(brief-pages 3-4).
We agree with the Examiner. Masumori offers two modes of
display, a double definition display and a standard definition
display. Double definition requires two A/D converters. In
the double definition mode, both converters operate at the
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