Appeal No. 2000-0720
Application No. 08/648,849
detector in response to data signals previously received
(claim 11).
We are not persuaded by these arguments. With respect to
Kim’s Figures 4 and 6, the coefficients in Kim memory 13 are
from data patterns output by slicer (symbol detector) 7. The
coefficients correspond to all channels of a digital TV
receiver (column 5, lines 34-36). As such, each coefficient
of a channel must be a function of the particular
characteristics of a channel in order to correct for those
characteristics and would be determined utilizing previous
data patterns. This is supported by Kim’s disclosure at
column 1, lines 6-14, wherein it is disclosed that “… a
filtering coefficient converging on an optimum value is
obtained for a firstly selected channel when an input signal
of the firstly selected channel is filtered, the obtained
filtering coefficient is stored and the stored filtering
coefficient is used as an initial coefficient for filtering
the input signal when the firstly selected channel is again
selected” (emphasis added). A separate coefficient is
obtained for each channel 2-n in this manner.
-5–
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