Appeal No. 96-1855
Application 07/953,807
up the display of Figure 64 have all lines ON (white) for the
even frames as shown in prior art Figure 65.
Appellants reduce flickering as shown in Figures 12,
13(a) and 13(b). Figure 12 shows a display in which the
hatched lines (lines 1, 3, 5 and 7) represent halftone data
display, and the white lines (lines 2, 4, 6 and 8) represent
white data display (ON).
As shown in Figures 13(a) and 13(b), the halftone
data display is obtained by generating ON data and OFF data
alternately in successive frames, i.e. odd and even frames, as
halftone data. The halftone data for lines 1 and 5 changes
from ON data in the odd frames to OFF data in the even frames.
Conversely, the halftone data for lines 3 and 7 changes from
OFF data in the odd frames to ON data in the even frames.
Thus, the phase at which the ON data and the OFF data is
changed over for the lines 3 and 7 is inverted with respect to
the phase at which the ON data and the OFF data is changed
over for lines 1 and 5. This inverting of the phase of
changing-over the ON data and the OFF data of the halftone
data reduces flickering by dispersing the ON data displays of
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Last modified: November 3, 2007