Appeal No. 1997-1240
Application 07/881,753
scanning lines, a field frequency of 59.94 Hz, an interlace
ratio of 1:1, and an aspect ratio of 16:9. Appellants argue
that this signal corresponds to the ED signal shown in the
table on page 13 of Appellants' specification and not the high
definition signal shown as the HD signal in the table on page
13. On page 7 of the supplemental reply brief, Appellants
argue that figure 11 of
Katsumata does not show anything whatsoever which converts the
double rate or ED signal from a double scanning speed
conversion circuit 1103 into a pseudo HD signal having a same
format (1125 scanning lines and an interlace ratio of 2:1) as
that of the HD signal which is the function performed by the
scanning line conversion function recited in claims 1, 18, 20
and 22. Appellants argue that it is readily apparent that the
double rate or ED signal and the MUSE or HD signal in figure
11 of Katsumata have different formats as can be seen from
column 14, lines 46 through 49. We note that column 14, lines
46 through 49, reads as follows:
The system further includes a display 1104
having an aspect ratio of 16:9 which is
able to be in synchronism with the double
speed scanning frequency of a NTSC signal
12
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