Appeal No. 2005-1995
Application 09/133,741
BACKGROUND
The invention relates to method for clipping which uses a
circular buffer instead of two separate buffers which are ping-
ponged between (specification, pages 11-13).
Claim 1 is reproduced below.
1. A method for clipping graphics primitives for display,
comprising the steps of:
performing a clipping algorithm which uses only a single
circular buffer to store input and output vertices of a
primitive; and
for each one of said vertices, indicating whether said one
of said vertices is visible with respect to each plane
of a view volume.
THE REFERENCES
The examiner relies on the following references:
Watkins et al. (Watkins) 5,361,386 November 1, 1994
Narayanaswami 5,613,052 March 18, 1997
Rossin et al. (Rossin) 5,877,773 March 2, 1999
(filed May 30, 1997)
Ivan E. Sutherland, Micropipelines, Communications of the
ACM, Volume 32, Number 6, pp. 720-738, June 1989.
THE REJECTIONS
Claims 1, 2, 7-11, 14, 15, 48, 50, and 51 stand rejected
under 35 U.S.C. § 103(a) as being unpatentable over Rossin and
Sutherland.
Claims 16, 17, 20-24, 26, 27, and 47 stand rejected under
35 U.S.C. § 103(a) as being unpatentable over Rossin and
Sutherland, further in view of Watkins.
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