Appeal 2006-2328
Application 10/131,049
incorrect. A composite synchronizing signal has a horizontal synchronizing
signal that determines the number of horizontal lines that make up the display
and a vertical synchronizing signal that determines the frequency at which the
display is refreshed. The composite synchronizing signal may vary. For
example, it may have continuous horizontal pulses when providing a vertical
pulse or it may omit horizontal pulses when providing a vertical pulse.
See, e.g., U.S. Patent 5,631,709, col. 1, ll. 14-39. The purpose of the
H-omission countermeasure circuit 306 in Arai is to supply horizontal pulses
when they are omitted during the vertical pulse as part of the composite
encoding scheme, not because the horizontal pulses are missing due to noise
or corruption. See Arai, Figure 8. Since the horizontal synchronizing signals
are omitted on purpose in Arai, and are not missing due to noise and/or
corruption, there is no suggestion to provide vertical synchronous signals that
are missing due to noise and/or corruption, as stated by the Examiner.
For the reasons stated above, Arai does not teach or suggest to one
skilled in the art the limitations of Issues 2 and 3.
Issue (4): Whether Arai discloses or would have suggested to one of
ordinary skill in the art a "synchronous signal processor outputting
processed vertical and horizontal synchronous signals to said video
signal processor."
Rejection and arguments
The Examiner found that connection of the processed vertical and
horizontal synchronizing signals to the video system circuit 13 in Arai would
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