Appeal No. 1997-1240
Application 07/881,753
double rate signal into a signal having a same format as that
of a high definition television signal and a same field
frequency as that of the standard television signal and an
aspect ratio conversion processing to convert the double rate
signal into a signal having a same aspect ratio as that of the
high definition television signal. Appellants point out that
these features of claim 1 discussed above are also recited in
independent claims 18, 20 and 22 in slightly different terms.
Appellants argue that neither Katsumata nor Honjo teaches or
suggests these limitations. In particular, Appellants argue
on pages 20 through 25 that Katsumata does not show in figure
11 circuitry which converts the signal outputted from double
scanning speed conversion circuit into a signal having the
same format as a high definition signal. Thus, Appellants
argue that figure 11 of Katsumata does not correspond to a
high definition processing means for applying to the double
rate signal outputted from said interpolation and rate
doubling processing means a scanning line conversion
processing to convert the double rate signal into a
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