Appeal No. 96-1463
Application 08/048,181
"a polygon display means, shift means and rotation means"
(Answer, page 3).
Iwasaki discloses an image synthesizer for an image
editing apparatus in which a synthesized image can be
displayed by superposing two or more source images one on top
of another so that all of the images are visible and
transparent to each other. Under the control of data
processor 17 (Figure 1), the two source images 21 and 22
(Figure 2A) are read from image memories 11 and 12,
respectively, according to address signals from the address
generator 15. The two source images are then superposed to
form a synthesized image 23 (Figure 2A) that is displayed on
display 13 (Figure 1). As seen in Figure 2B
the superposingly synthesized mutually transparent
image 23 consists of vertically elongated thin
picture elements 24 and 25 respectively of the
original source images 21 and 22 each of one pixel
in width alternately arranged in horizontal
direction at the areal ratio of 1:1 such that the
two original source images 21 and 22 appear as if
they were placed one on top of the other (column 3,
lines 40 through 47).
In other words, in Iwasaki
image data from the two image memories I1 [sic, 11]
and 12 are not averaged with respect to each pixel
in the superposed area. Instead, image data are
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Last modified: November 3, 2007