Appeal No. 1997-3182
Application 08/254,643
detector circuit generating an output signal that is a
function of the relative phase information contained in the
first and second input signals." Appellant rightly contests
the inability of Robinson to anticipate the subject matter of
each of these claims on appeal in the various briefs on
appeal.
Our study of Robinson lead us to agree with appellant's
remarks at pages 8 and 9 of the brief:
The reference [Robinson] discloses delaying the
difference signal A-B with respect to the sum signal
A+B. There is no disclosure in the reference of any
detector circuit generating a first coefficient of
proportionality that is a function of the relative
phase of the left and right input signals
corresponding to the A and the B signals in the
reference. There is no disclosure whatsoever that
the coefficient G is a function of the relative
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phase of the left and right input signals or the
relative phase of the A+B and A-B signals if these
be treated as the first and second signals called
for by claim 21.
Modifier network 30 may introduce a time delay
"with a phase shift which varies in the manner as
shown with curve 52 in Fig. 2O that is a function of
the frequency of the difference signal A-B, but that
is not a disclosure of "a detector circuit
generating a first coefficient of proportionality
that is a function of the relative phase of the left
and right input signals" called for by claims 1 and
8 or "a detector circuit generating an output signal
that is a function of the relative phase information
contained in the first and second input signals"
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