Appeal No. 2000-0972
Application No. 08/679,848
interference elimination means connected to said
interference zone detection means for eliminating
the interference of said mobile unit with said
priority service unit.
The reference relied on by the examiner is:
Klandrud et al. (Klandrud), “Beacon Control of Radio
Transmitters to Reduce Radio Frequency Interference,”
Motorola, Inc. Technical Developments, Vol. 16, pp. 130-32
(August 1992).
Claims 1 and 2 stand rejected under 35 U.S.C. § 103(a) as
being unpatentable over Klandrud.
Reference is made to the briefs (paper numbers 18 and 20)
and the answer (paper number 19) for the respective positions
of the appellant and the examiner.
OPINION
We have carefully considered the entire record before us,
and we will reverse the obviousness rejection of claims 1 and
2.
Klandrud recognizes that out-of-band radio frequency (RF)
emanations from a mobile unit satellite radio 2 or 3 (Figure
1) may cause interference to a sensitive receiver (e.g., radio
astronomy (RA) site 1) if the mobile unit is too close to the
sensitive receiver (page 130, column 1). Klandrud uses one or
more beacon units 5 and 6 to transmit RF warning signals 7 and
4
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