Appeal No. 95-4154
Application 08/122,193
reasonably means only the selection of one particular impedance
value among a plurality of selectable values as the output
impedance, not a plurality of impedance values any one of which
may ultimately turn out to be the actual output impedance
depending on something over which the user does not control.
While features not claimed should not be read into the
claims from the specification, claim terms also must be
interpreted reasonably in light of the specification. The
appellants’ disclosed invention and specification concern the
causing of the circuit to exhibit a specific impedance known to
the user. In our view, it would not be consistent with the
specification to interpret the claims as reading on something
which defines a range or plurality of impedance values over which
the actual output impedance will vary based on the characteristic
impedance of the transmission line or the drain current of a
monitoring transistor.
Additionally, Asano does not disclose when input A is
provided by a user, assuming that the input A is provided by a
user. It would be mere speculation to assume that the input A is
provided only during a predetermined mode of operation or only
during reset. Nothing precludes inputting the A signal at some
other time.
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