Appeal No. 1997-4445
Application 08/305,076
exciting time period terminates. The current is reduced to
zero during time period td in Figure 3 only during a
non-exciting time period. Thus, the anticipation rejection of
claims 7, 10, and 13 is reversed.
With respect to claim 8: (i) the exciting current is
increased to a first predetermined value during a "first
exciting time period" ta; (ii) the exciting current is reduced
to a second predetermined value during a "second exciting time
period" at the end of ta when the substep signal is received
(as discussed in more detail in connection with claim 6); and
(iii) the exciting current is increased to a third
predetermined value during a "third exciting time period" tb.
In fact, no special interpretations are required for claim 8
to read on the APA. The anticipation rejection of claim 8 is
sustained.
The APA does not disclose "applying a pulse width
modulation control signal to said exciting current supplying
circuit during said second exciting time period" as recited in
claims 9-11. The Examiner's finding that chopping interval td
in Figure 3 corresponds to pulse width modulation control is
erroneous because that interval is not an "exciting time
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