Appeal No. 98-1394 Page 2
Application No. 08/325,448
transponder. Components of the transponder include an
antenna, a paging receiver, a transmitter, and a power supply.
Using a
conventional paging network to control the transponder ensures
good coverage and saves the cost of building and operating a
new communications network. Control data sent to the
transponder define the frequency, power, and sequences of the
transmitter.
Claim 1, which is representative for our purposes,
follows:
1. A transponder system (B) for localization
of an object being provided with a transponder for
this system comprising antenna device and a paging
receiver (1) having an unique call, further
comprising
a built-in marker transmitter (10) having a
standby mode, and a working enabling mode during
which said marker transmitter (10) is working on a
fixed frequency different from the frequency of the
paging receiver (1),
a unit (2) for decoding of an authorization code
and a control information obtained via the paging
receiver (1),
an electronic logic unit (3) for processing of
control information obtained from the decoder (2),
a power supply (11) to permit the transponder
system (B) and its marker transmitter (10) to
operate during a certain minimum time period during
the enabling mode, and
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