Appeal No. 1999-0587
Application 08/414,803
Representative claim 1 is reproduced below:
1. An image generation apparatus wherein draw commands are transferred to a
drawing device which generates an image in a frame buffer by drawing sequentially in
accordance with said drawing commands, said drawing device comprising:
a read means for reading pixel data of an image which has been previously drawn
from said frame buffer;
a mixing circuit for mixing the pixel data read from said frame buffer with pixel data
of a corresponding position where a next drawing operation is to be performed in a
specified mixing ratio;
a write means for writing mixed pixel data in the corresponding pixel position in
said frame buffer;
a mixing ratio memory for storing a plurality of said mixing ratio; and
a selection means for selecting the mixing ratio to be supplied to said mixing circuit
from said mixing ratio memory according to mixing ratio selection information in said draw
command.
The following references are relied on by the examiner:
Evangelisti et al. (Evangelisti) 4,823,281 Apr. 18, 1989
Kirk 5,335,318 Aug. 2, 1994
(filed June 10, 1992)
Claims 1, 9 and 13 stand rejected under 35 U.S.C. § 103. As evidence of
obviousness, the examiner relies upon Evangelisti in view of Kirk.
2
Page: Previous 1 2 3 4 5 6 7 8 9 Next
Last modified: November 3, 2007