Appeal No. 1999-1848
Application No. 08/532,177
BACKGROUND
The appellants’ invention relates to a phase shift apparatus. An understanding of
the invention can be derived from a reading of exemplary claim 1, which is reproduced
below.
1. Phase shift apparatus, comprising:
a source providing an input signal to be phase shifted;
summing means for summing first, second and third intermediate
signals derived from said input signal and having differing phase shifts to
form a phase shifted output signal;
first amplitude control means responsive to a phase control signal
supplied thereto for varying the amplitudes of said second and third
intermediate signals concurrently and in opposite directions for controlling
the phase of said phase shifted output signal; and
second amplitude control means responsive to said phase control
signal, for varying the amplitude of said first intermediate signal.
The prior art reference of record relied upon by the examiner in rejecting the
appealed claims is:
Metz 5,157,276 Oct. 20, 1992
Claim 1 stands rejected under 35 U.S.C. § 102(b) as being anticipated by Metz.
2
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