Appeal No. 1998-3342 Page 10
Application No. 08/540,943
characteristic over a wide range of input signal levels rather
than to adjust a reception range of an antenna. Because
Sasaki adjusts its attenuators to achieve a linear input-
output characteristic, we are not persuaded that teachings
from the prior art would have suggested the limitations of
"adjusting sensitivity of the receiver by attenuating signals
received by the antenna, wherein the reception ranges for the
plurality of receivers are adjusted to overlap to permit
continuous tracking of the plurality of transmitters within
the reception ranges” or “an attenuator, inserted between a
receiver of the plurality of receivers and its associated
antenna for adjusting the reception range which the antenna
receives, wherein the reception range of each of the plurality
of receivers is adjustable for controlling overlap of
reception ranges.” Therefore, we reverse the rejection of
claims 2, 3, 5, and 6 as being obvious over Sasaki.
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