Appeal No. 1997-1389
Application 08/642,811
14 and 15 in Hattori operate upon the detection of a
predetermined half H-bridge output voltage level. Inasmuch as
this reference is the same reference discussed by appellant at
page 2 of the specification as filed, appellant notes there
that Hattori's circuit cannot be used with a half H-bridge
circuit. Furthermore, as noted by appellant at the top of
page 6 of the brief, Hattori's detection does not enable the
turn on of a next phase of the drive sequence. A next phase
of a drive sequence in Hattori is inevitable, but it is not
enabled by the detection operation of the active feedback
circuitry claimed. There is no feedback of transistors 14, 15
to the control circuit 11 in Hattori.
On the other hand, we sustain the rejection of claim 1
under 35 U.S.C. § 102 as being anticipated by Fukunaga for the
reasons set forth by the examiner at pages 4, 7 and 8 of the
answer. As noted by the examiner, the context of the specific
disclosure in this reference is with respect to the three
phrase bridge circuit set forth in prior art Figure 1 of
Fukunaga for the motor 1. As noted by the examiner in the
rejection, the midpoint between the upper power switch devices
2U, 3U, 4U and the lower power switching device 2L, 3L, and 4L
5
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