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    • 5. 发明授权
    • Polygon display based on x coordinates of edges on scan line
    • 基于扫描线上边缘的x坐标的多边形显示
    • US5739826A
    • 1998-04-14
    • US643409
    • 1996-05-06
    • Naoto ShiraishiTatsuya FujiiMasanobu FukushimaTatsuya NakajimaYasuhiro Izawa
    • Naoto ShiraishiTatsuya FujiiMasanobu FukushimaTatsuya NakajimaYasuhiro Izawa
    • G09G5/36G06T11/20G06T15/40
    • G06T11/20
    • Image data is processed so that polygons can be displayed on a screen of scanned lines. A first memory stores at least X and Y coordinate data for edge points of the polygons. A second memory stores polygon numbers arranged in a processing order. A first computing unit computes data for sides of each polygon corresponding to each polygon number stored in the second memory. A second computing unit computes edge pair data in accordance with the data for sides of polygons, the edge pair data including a pair of edge points located on the scan lines. A third computing unit computes data for a start point and an end point of each polygon based on the edge pair data. Finally, a processing unit processes the start point and end point data to obtain polygon dot data and outputs the dot data in synchrony with the scan lines.
    • 处理图像数据,使得多边形可以显示在扫描线的屏幕上。 第一存储器存储用于多边形的边缘点的至少X和Y坐标数据。 第二存储器存储以处理顺序排列的多边形号。 第一计算单元计算与存储在第二存储器中的每个多边形数对应的每个多边形的边的数据。 第二计算单元根据多边形的边的数据计算边缘对数据,边缘对数据包括位于扫描线上的一对边缘点。 第三计算单元基于边对对数据来计算每个多边形的起始点和终点的数据。 最后,处理单元处理起始点和终点数据以获得多边形点数据,并与扫描线同步地输出点数据。
    • 6. 发明授权
    • Sorting processor
    • 排序处理器
    • US5459822A
    • 1995-10-17
    • US127744
    • 1993-09-27
    • Yasuhiro IzawaTatsuya FujiiNaoto ShiraishiMasanobu FukushimaTatsuya Nakajima
    • Yasuhiro IzawaTatsuya FujiiNaoto ShiraishiMasanobu FukushimaTatsuya Nakajima
    • G06F7/24G06F15/10G06T15/00G06T11/00
    • G06F15/10
    • A sorting processor has a polygonal priority order generating circuit. The polygonal priority order generating circuit includes a memory for storing information of centers of plural polygons; a position setting section for transforming a coordinate of each of the polygonal centers from an object coordinate to an absolute coordinate; and a visual field transforming circuit for transforming the transformed coordinate as a position set object obtained by the position setting section with respect to a visual field. The sorting processor further has a sorting circuit for sorting transformed results about the visual field on the basis of Z-axis information. There is no frame delay due to a need to wait until the polygonal information is completely sorted. Further, it is not necessary to use a RAM for storing information geometrically transformed before a sorter.
    • 排序处理器具有多边形优先级顺序生成电路。 多边形优先级顺序生成电路包括存储多个多边形的中心信息的存储器; 位置设定部分,用于将每个多边形中心的坐标从对象坐标变换为绝对坐标; 以及视场变换电路,用于将经变换的坐标变换为由位置设定部相对于视野获得的位置设定对象。 分类处理器还具有用于根据Z轴信息分类关于视野的变换结果的分类电路。 由于需要等待直到多边形信息被完全排序,所以没有帧延迟。 此外,不需要使用RAM来存储在分类器之前几何变换的信息。
    • 7. 发明授权
    • Clipping processor
    • 剪切处理器
    • US5396585A
    • 1995-03-07
    • US825614
    • 1992-01-24
    • Tatsuya FujiiNaoto ShiraishiMasanobu FukushimaTatsuya NakajimaYasuhiro Izawa
    • Tatsuya FujiiNaoto ShiraishiMasanobu FukushimaTatsuya NakajimaYasuhiro Izawa
    • G06F3/153G06T11/00G06T11/20G06T15/30G09G5/20G09G5/36G06F15/40
    • G06T15/30
    • A clipping processor has a first polygonal end point memory for storing two end point information of X and Y constituting a polygon and respective end point information of mapping information. The clipping processor also has a screen side generating circuit for judging whether a polygonal side crosses each of screen end points and is located inside or outside a screen based on the two end point information from the first polygonal end point memory. The clipping processor further has an intersecting point arithmetic circuit for calculating an intersecting point on the polygonal side at each of the screen end points and respective end point addresses of the mapping information at the intersecting point on the basis of data from the screen side generating circuit. The two end point information and the mapping information at the intersecting point on the polygonal side at each of the screen end points are clipped by the intersecting point arithmetic circuit and are written to the second polygonal end point memory.
    • 剪辑处理器具有用于存储构成多边形的X和Y的两个端点信息的第一多边形终点存储器以及映射信息的各个终点信息。 剪辑处理器还具有屏幕侧产生电路,用于基于来自第一多边形终点存储器的两个端点信息来判断多边形边是否跨过屏幕终点并且位于屏幕内部或外部。 削波处理器还具有交点运算电路,用于根据来自屏幕侧发生电路的数据计算交点处的每个屏幕终点和映射信息的各端点地址的多边形相交点 。 每个屏幕终点处的多边形侧的交点处的两个端点信息和映射信息被交叉点运算电路截取并写入第二多边形终点存储器。