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    • 38. 发明申请
    • Method and system for displaying VLSI layout data
    • 用于显示VLSI布局数据的方法和系统
    • US20020162081A1
    • 2002-10-31
    • US09901028
    • 2001-07-10
    • The Board of Trustees of the Leland Stanford Jr. University
    • Jeffrey M. Solomon
    • G06F017/50
    • G06T19/00G06F17/5068G06T15/20
    • A VLSI layout editor and method for using same that increases display and re-display speed and accuracy uses properties inherent to VLSI layouts that allows them to be displayed efficiently and accurately independent of the canonical expression of the VLSI design. The VLSI layout editor and methods for using same use precomputed images that each represent a portion of the VLSI layout, a hierarchy cache that includes multiple LOD versions of selected sub-designs in the pre-computed images, and selected direct determination of the viewable representation from the canonical expression for at least one LOD. Apparatus and methods according to the present invention can render a particular type of data whose canonical form is smaller than its corresponding displayed image thereof when the displayed image has geometric properties that allow heuristics and rasterization for dynamic and accurate expansion using selected combined techniques. Texture mapping and mipmapping can be used to accurately reduce, expand and reorder layers in a viewable image expanded from a canonical expression of the VLSI layout.
    • VLSI布局编辑器和使用它的方法增加显示和重新显示的速度和精度使用VLSI布局固有的属性,可以高效,准确地显示VLSI设计的规范表达。 VLSI布局编辑器和用于使用相同使用的预计算图像的VLSI布局编辑器和方法,每个图像表示VLSI布局的一部分,包括预先计算的图像中的所选子设计的多个LOD版本的分层缓存,以及所选择的可视表示的直接确定 从至少一个LOD的规范表达。 根据本发明的装置和方法,当所显示的图像具有允许使用选择的组合技术进行动态和精确扩展的启发式和光栅化的几何特性时,能够呈现规范形式小于其对应的显示图像的特定类型的数据。 纹理映射和mipmap可用于从VLSI布局的规范表达式扩展的可视图像中精确地减少,扩展和重新排列图层。