Appeal No. 1997-3145 Page 11
Application No. 08/058,199
zoomed image (col. 1, lines 44-51). Waller discloses (figures
1C and 1D) an original image with an area 10 selected for
enlargement. Another capability of the zoom operation is
shown in figure 2, where Waller discloses viewports 12 and 12A
for displaying an enlarged view 12A, of a portion of an image
along with the original image 12. Waller discloses (col. 3,
lines 39-43, See also col.7, lines 7, line 61 through col. 8,
line 31) that "[t]he present invention is capable of
displaying up to 64 viewports, simultaneously, on the CRT
screen of the graphics display terminal. For simplicity
purposes, only two viewports are shown in FIG. 2." Waller is
silent as to whether the up to 64 viewports that may be
simultaneously displayed on the CRT will be on top of the
original image, whether they will cover the portion of the
image that is enlarged, etc. Waller additionally discloses
(col. 5, lines 19-27, col. 5, lines 52-60, and col. 6, lines
16-25) that if two surfaces comprised of bit planes (figure 4)
are selected, two images will be displayed on the CRT, with
each image being capable of being displayed independently of
one another or superimposed upon one another to create a
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