Appeal No. 1997-2896
Application 08/340,561
the display) at the positions corresponding to the path of the
pen.” We agree that this structure encompasses a
microprocessor. However, we cannot stop here. We must
consider the algorithm performed by the microprocessor as a
structural limitation as well. As stated by our reviewing
court, “[t]he structure of a microprocessor programmed to
carry out an algorithm is limited by the disclosed algorithm.”
WMS Gaming Inc. V. International Game Technology, 184 F.3d at
1348, 51 USPQ2d at 1391 (Fed. Cir. 1999). Accordingly, we
concur with the Appellants’ assertion on page 4 of the brief,
that the scope of claim 1 includes as structure, the algorithm
disclosed in the specification to produce the anti-aliased ink
image.
Specifically, we find that the scope of claim 1 includes
the structure of a microprocessor that breaks down sensed pen
strokes into a series of line segments to be displayed,
wherein each line segment is displayed with pixels that
overlap an adjacent line segment. See Appellants’
specification page 9, lines 11 through 15. Further, we find
that claimed structure includes the microprocessor being
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