Appeal No. 1998-1915 Page 7
Application No. 08/670,123
not supplied immediately after the lamp is activated. To the
contrary, the reference teaches that the low frequency
waveform is supplied before the lamp is activated.
Specifically, "[i]t is apparent from the above that the
lighting frequency controller 30 outputs a rectangular wave
signal having the reference frequency f2(<f1) before the lamp
10 is activated, and outputs a rectangular wave signal having
the reference frequency f1 after the activation of the lamp
10. This scheme is employed to prevent the relationship
between the phase of the rectangular wave voltage supplied to
the lamp 10 and the generation timing for the start pulse
as much as possible." Col. 7, ll. 47-51.
Relying on Leyten only to teach "that by increasing the
current level at the start this will minimize the need for re-
ignition", (Examiner's Answer at 7), the examiner fails to
allege, let alone show, that the reference cures the
deficiency of Yamashita. Because Yamashita supplies its low
frequency waveform to its lamp before the lamp is activated,
we are not persuaded that teachings from the prior art
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