Appeal No. 1997-1389
Application 08/642,811
in Figure 1 comprises the claimed output of what amounts to
half of the claimed H-bridge. Figure 5 is the basic block
diagram circuit which is detailed in certain portions in
Figure 6 which the examiner discusses in detail.
The monitoring circuit 13U, 13L is shown in Figure 5 and
shown in more detail in Figure 6. As noted in the abstract of
this reference, it would appear by inspection of Figure 5 that
the monitoring circuits 13U, 13L are connected respectively
only to the power switching devices 2U, 2L. However, in
accordance with the showing in Figure 6 in the discussion with
respect to this figure beginning at the bottom of column 4, it
is noted that the apparent monitoring voltage V , V is “basedGL GU
on” an emitter voltage V , V . Note the paragraph bridgingEL EU
columns 4 and 5. It is clear from the showing of Figure 10
that the switching devices 2U, 2L may utilize a current
detecting transistor which utilizes the output of V “based
MON
on” the voltage output from the current detector resistor 20
which is connected again to the emitter portion V , V . TheEU EL
voltage developed at V through the current detecting
MON
resistor 20 is based upon the current flowing through the
entire transistor 19U, 19L in Figure 10. Note the discussion
6
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