Appeal 2006-2328
Application 10/131,049
Issue (2): Whether Arai discloses or would have suggested to one of
ordinary skill in the art "said microcomputer generating . . . reference
. . . vertical synchronous signals when at least one synchronous signal
is not detected from said computer."
and
Issue (3): Whether Arai discloses or would have suggested to one of
ordinary skill in the art "said microcomputer providing . . . said . . .
reference . . . vertical synchronous signals to said synchronous signal
processor."
Rejection and arguments
The Examiner found that Arai generates separate "reference" horizontal
and vertical synchronous signals "when at least one synchronous signal is not
detected" because H-omission countermeasure circuit 306 replaces missing
horizontal synchronous signals (Final Rejection at 4). In the Advisory
Action, the Examiner, apparently realizing that Arai does not disclose
generating "reference vertical" synchronous signals when horizontal
synchronous signals are missing, found that it was notoriously well known to
use video sync countdown circuitry to generate replacement synchronous
signals when incoming sync signals were missing and/or corrupted by noise,
and concluded that it would have been obvious to modify Arai to include
vertical countdown circuitry to protect the vertical signal from noise and/or
corruption (Advisory Action at 7).
Appellant argues that the H-omission countermeasure circuit 306 in
Arai generates only a pseudo-horizontal synchronizing signal and fails to
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