Appeal No. 1997-1317
Application No. 08/371,995
"phase control circuit" on phase lock loop 44, which is part
of the signal processing circuitry. Kipp '221 discloses 3
similar circuitry.
Appellant contends (Brief at 17) that the Kipp
references fail to disclose the claimed "distance measuring
device having a frequency modulated radar -transmitter and
-receiver (10) for guiding a radar beam onto an object to be
measured and receiving a reflecting beam from the object and
for mixing of a transmitted frequency with a received
frequency and generating a beat signal (30) by mixing the
transmitted and received frequencies." The only reasons given
are that Kipp '221 "describes a system that requires
predetermined range parameters for comparing with input from a
target of interest" and Kipp '309 "provides a phase locked
loop for receiving a frequency modulated/continuous wave radar
transmitted and received input signal and selective filter for
filtering the undesired frequencies" (Brief at 17). This
reasoning is unpersuasive because it fails to explain why the
3Appellant does not argue that the claim language
precludes the phase control circuit from being part of the
signal processing circuit.
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