Appeal No. 2000-0672
Application 08/838,027
associated with the receiver stages included in a positioning
radio receiver. See Appellants’ Specification page 6, lines 30-
32. Signal delay of the received signal includes both a
transmission-line delay and a group-delay introduced by a filter
included in one of the receiver stages. See Appellants’
Specification page 7, lines 10-12. Drebinger teaches a
correction memory KOR which stores a correction value k that
compensates for transit time fluctuations in the evaluation and
transmission devices. See Drebinger’s Specification column 9,
lines 39-42. The correction value k is equal to a difference
between tf1 and tf2, where tf1 is the transit time delay in the
receiving station and in the transmission lines of a first
receiving station, and tf2 is the transit time delay in the
receiving station and in the transmission lines of a second
receiving station. See Drebinger’s Specification column 10,
lines 27-29.
We note that Drebinger’s pre-stored correction value k
corresponds to a relative difference of transit time delays
between two receivers. We find that the pre-stored correction
value k is not “signal delay associated with one or more receiver
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