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    • 1. 发明授权
    • Fine grain multi-pass for multiple texture rendering
    • 细纹多通道,可进行多纹理渲染
    • US06392655B1
    • 2002-05-21
    • US09306987
    • 1999-05-07
    • Christopher J. MigdalAmy J. MigdalDavid L. Morgan
    • Christopher J. MigdalAmy J. MigdalDavid L. Morgan
    • G06T1140
    • G06T15/04
    • A system and method for multiple texture rendering on a primitive using a fine grain multi-pass at a pixel level. The present invention has hardware capable of processing one texture and either hardware, software, and/or firmware capability to hold state information associated with several textures. The hardware rapidly switches between processing different textures and allows a very fine grain multi-pass implementation of multiple texture rendering. In one embodiment, a computer graphics raster subsystem renders multiple textures on a primitive. A fine grain scan converter takes in a primitive description with multiple sets of texture coordinates defined for each vertex. Each set of texture coordinates defines an independent texture. Each texture is associated with a texture number. The fine grain scan converter produces a set of texture coordinates at a given pixel for each of the multiple textures before moving on to the next pixel. A texture address generator and texture filter use the texture numbers and the texture coordinates associated with the texture numbers to produce a filtered texture value for each of the multiple textures. A recirculating texture blender combines color and these filtered texture values to produce a final textured color value. The fine-grain multi-pass technique for rendering multiple textures on a primitive is faster than a coarse grain multi-pass technique because the geometry does not need to be sent multiple times from a geometry engine to a raster subsystem. In addition, the fine-grain multi-pass technique is cheaper and more efficient than a parallel approach because it does not require permanent multiple texture units in a hardware connected together by texture blending units.
    • 用于在像素级使用细粒度多遍的原语上的多个纹理渲染的系统和方法。 本发明具有能够处理一个纹理和硬件,软件和/或固件能力以保持与多个纹理相关联的状态信息的硬件。 硬件在处理不同纹理之间快速切换,并允许非常精细的纹理多遍实现多个纹理渲染。 在一个实施例中,计算机图形光栅子系统在原始图像上渲染多个纹理。 细粒度扫描转换器采用对每个顶点定义的多组纹理坐标的原始描述。 每组纹理坐标定义独立纹理。 每个纹理都与纹理编号相关联。 细粒扫描转换器在移动到下一个像素之前,为每个多个纹理的给定像素产生一组纹理坐标。 纹理地址生成器和纹理过滤器使用与纹理编号相关联的纹理编号和纹理坐标来为多个纹理中的每一个生成滤波纹理值。 再循环纹理混合器将颜色和这些过滤的纹理值组合以产生最终的纹理颜色值。 用于在原始图像上渲染多个纹理的细粒多遍技术比粗粒多通道技术更快,因为几何不需要从几何引擎多次发送到光栅子系统。 另外,细粒多道技术比平行方法更便宜和更有效率,因为在通过纹理混合单元连接在一起的硬件中不需要永久的多个纹理单元。
    • 3. 发明授权
    • Bellows structure and method
    • 波纹管结构和方法
    • US4457213A
    • 1984-07-03
    • US427603
    • 1982-09-29
    • David L. Morgan
    • David L. Morgan
    • F16J3/04F01B19/02
    • F16J3/047Y10T29/49877
    • Flexible welded metal bellows comprising a plurality of diaphragms comprising flexible metal annuli free plates or rings having similar inner and outer diameters, alternate pairs of said plates having their outer and inner peripheries, respectively, welded to each other to form a fluid-tight connection therebetween. The invention comprises interposing and welding a metal annuli spacer plate or ring between at least one adjacent pair of said flexible free plates to space the free plates from each other and to prevent or reduce the pressure contact between the adjacent welds when the bellows is retracted. The spacer plate(s) or ring(s) interposed between the pairs of free plates which are welded at their outer peripheries have the same outer diameter as said free plates and are welded therebetween and have a larger inner diameter than said free plates; the spacer plate(s) or ring(s) interposed between the alternate pairs of free plates which are welded at their inner peripheries have the same inner diameter as said free plates and are welded therebetween and have a smaller outer diameter than said free plates.
    • 柔性焊接金属波纹管包括多个膜片,其包括具有相似内径和外径的柔性金属无环形板或环,所述板的分别具有其外周和内周的交替对,彼此焊接以形成其间的流体密封连接 。 本发明包括在至少一个相邻的一对所述柔性自由板之间插入和焊接金属环间隔板或环,以使空闲板彼此间隔开,并且当波纹管缩回时防止或减小相邻焊缝之间的压力接触。 插入在其外周边焊接的自由板对之间的间隔板或环具有与所述自由板相同的外径,并且焊接在它们之间并且具有比所述自由板更大的内径; 介于彼此内侧焊接的交替的自由板对之间的间隔板或环具有与所述自由板相同的内径并且焊接在它们之间并且具有比所述自由板更小的外径。