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 4Page: Previous 1 2 3 4 5 6 7 8 9 10 NextLast modified: November 3, 2007