Appeal No. 1998-1914
Application No. 08/528,130
BACKGROUND
The invention is directed to an apparatus and method for determining the frequency
of a received RF signal by sequentially applying the received signal to selected individual
filters having predetermined pass bands. The magnitudes of the filtered signals are
compared with the magnitude of the received RF signal. Claim 1 is reproduced below.
1. A method for determining a frequency of an RF signal, comprising the steps
of:
sequentially applying the RF signal to selected individual ones of a plurality
of filters, each of the plurality of filters having a predetermined pass band;
determining magnitudes of signals that are output from individual ones of the
plurality of filters;
comparing each individual one of the determined magnitudes to a
magnitude of the RF signal by applying each respective individual filter output signal
and the RF signal to a comparing device; and
determining a frequency of the RF signal as being within the predetermined
frequency pass band of a filter that outputs a largest magnitude output signal
relative to the magnitude of the RF signal, and where the filter output signal
magnitude exceeds a first predetermined reference magnitude level.
The examiner relies on the following references:
Hurvitz 2,886,777 May 12, 1959
Bailey 4,301,454 Nov. 17, 1981
Claims 1, 4, 5, and 11 stand rejected under 35 U.S.C. § 102 as being anticipated
by Bailey.
Claim 10 stands rejected under 35 U.S.C. § 102 as being anticipated by Hurvitz.
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