Appeal No. 1998-0295
Application No. 08/202,828
occurs in a normal fashion (column 2, lines 50 through 52).
When the input on lead 10 changes to a negative input signal,
it follows that the outputs from the amplifiers 14 and 18
should change their states via inversion to positive output
signals. Rhodes indicates that the output of amplifier 14
will “substantially instantaneously
be positive,” but “the output of amplifier 18 cannot
immediately change to positive due to the storage of a charge
in capacitor 52” (column 2, lines 52 through 58). The
positive output from amplifier 14 activates switch 36 which in
turn causes the capacitor 52 to discharge through resistors 48
and 50 (column 2, lines 59 through 63). “As soon as capacitor
52 is discharged, transistor 36 again turns OFF and the
integration can proceed as normal” (column 2, lines 63 through
65). In short, Rhodes teaches discharge of capacitor 52 when
an input signal on lead 10 changes polarity from positive to
negative (column 1, lines 26 through 32).
Appellant argues inter alia that the discharge of the
integration circuit in Rhodes is linked to switching of
polarities, and not to the determination that: “means for
selectively connecting the output is not connected” (brief,
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