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1.发明授权Generating partials for perspective corrected texture coordinates in a four pixel texture pipeline 有权在四像素纹理流水线中生成透视校正纹理坐标的偏差公开(公告)号：US06906723B2
公开(公告)日：2005-06-14
申请号：US09820462
申请日：2001-03-29
Applicant: David N. Ault, Jr.
Inventor： David N. Ault, Jr.
CPC classification number: G06T15/04
Abstract: A method, program and apparatus for generating partial differential equations for perspective corrected texture coordinates in a computer graphics display are provided. The present invention comprises calculating texture coordinates for four adjacent pixels and then determining the differences between the coordinates. A perspective correction factor is then calculated, which is multiplied by each coordinate difference.
Abstract translation: 提供了一种用于在计算机图形显示器中生成用于透视校正纹理坐标的偏微分方程的方法，程序和装置。 本发明包括计算四个相邻像素的纹理坐标，然后确定坐标之间的差异。 然后计算透视校正因子，其乘以每个坐标差。
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2.发明授权公开(公告)号：US08239430B2
公开(公告)日：2012-08-07
申请号：US11869022
申请日：2007-10-09
Applicant: David N. Ault , Emiliano Lozano , Bao G. Truong , Samuel I. Ward
Inventor： David N. Ault , Emiliano Lozano , Bao G. Truong , Samuel I. Ward
IPC: G06F7/00
CPC classification number: G06F7/5446
Abstract: Performing a calculation using a coordinate rotation digital computer (CORDIC) algorithm. Execution of the CORDIC algorithm is begun. An error introduced by a truncated vector as a result of executing the CORDIC algorithm is pre-computed. The error is incorporated into a subsequent iteration of the CORDIC algorithm. Execution of the CORDIC algorithm is completed. The result of the CORDIC algorithm is stored.
Abstract translation: 使用坐标旋转数字计算机（CORDIC）算法进行计算。 开始执行CORDIC算法。 作为执行CORDIC算法的结果的截断向量引入的误差是预先计算的。 该错误被并入CORDIC算法的后续迭代中。 完成CORDIC算法的执行。 存储CORDIC算法的结果。
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3.发明申请公开(公告)号：US20090094307A1
公开(公告)日：2009-04-09
申请号：US11869022
申请日：2007-10-09
Applicant: David N. Ault , Emiliano Lozano , Bao G. Truong , Samuel I. Ward
Inventor： David N. Ault , Emiliano Lozano , Bao G. Truong , Samuel I. Ward
IPC: G06F7/548
CPC classification number: G06F7/5446
Abstract: Performing a calculation using a coordinate rotation digital computer (CORDIC) algorithm. Execution of the CORDIC algorithm is begun. An error introduced by a truncated vector as a result of executing the CORDIC algorithm is pre-computed. The error is incorporated into a subsequent iteration of the CORDIC algorithm. Execution of the CORDIC algorithm is completed. The result of the CORDIC algorithm is stored.
Abstract translation: 使用坐标旋转数字计算机（CORDIC）算法进行计算。 开始执行CORDIC算法。 作为执行CORDIC算法的结果的截断向量引入的误差是预先计算的。 该错误被并入CORDIC算法的后续迭代中。 完成CORDIC算法的执行。 存储CORDIC算法的结果。
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