Appeal No. 1997-4452
Application No. 08/653,978
BACKGROUND
The appellant's invention relates to an anti-aliasing apparatus and method with
automatic snap fit of horizontal and vertical edges of the image to target grid. The method
of the invention downwardly scales outline data to the desired scale, then snap fits the
horizontal and vertical edges of the image to the target grid. The fitted outline of the image
is then upwardly scaled to an integer multiple of the desired grid. The upwardly scaled
outline is then processed into a bitmap and the bitmap is then scaled down to the desired
grid with anti-aliasing. An understanding of the invention can be derived from a reading of
exemplary claim 15, which is reproduced below.
15. An [sic] computer image rendition method for rendering a bit-
mapped image having anti-aliasing effects onto a target grid from a supplied
set of plot instructions stored in memory for an image wherein the plot
instructions define a plotting of an ideal outline of the image to be rendered,
said method including the steps of:
forming target outline data defining a first plot of the ideal outline, scaled
and grid fitted onto a target grid, and
forming mezzanine outline data defining a second plot of the desired
outline, upwardly scaled from the target outline data onto a mezzanine grid,
wherein plural grid boxes of the mezzanine grid tile perfectly into each grid
box of the target grid.
The prior art references of record relied upon by the examiner in rejecting the
appealed claims are:
Kang 5,270,836 Dec. 14, 1993
Hassett et al. (Hassett) 5,301,267 Apr. 05, 1994
2
Page: Previous 1 2 3 4 5 6 7 8 Next
Last modified: November 3, 2007