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1.发明授权Method and apparatus for selectively viewing nets within a database editor tool 失效用于在数据库编辑器工具内选择性地查看网络的方法和装置公开(公告)号：US06516456B1
公开(公告)日：2003-02-04
申请号：US08789027
申请日：1997-01-27
IPC分类号： G06F1750
CPC分类号： G06F17/5072 , G06F17/5022 , G06F17/5045
摘要： A method and apparatus for selectively viewing nets within a database editor tool. The present invention provides four primary features for selectively viewing nets. First, the present invention contemplates selecting a number of objects, and viewing only those nets that are either driven from or received by the selected objects. In a preferred embodiment, the number of objects are placed objects within a placement tool. Second, for those nets that are selected, and that are also coupled to un-placed cells, the present invention contemplate providing fly-wires from the corresponding selected objects to a predetermined location representative of an approximate expected location for the un-placed cells. Third, the present invention contemplate providing a vector filter which may permit only vectored nets with a selected bus width range to be viewed. Finally, the fourth feature of the present invention contemplates providing a means for selectively viewing only those nets that cross a predetermined hierarchical boundary within the circuit design database.
摘要翻译： 一种用于在数据库编辑器工具内选择性地查看网络的方法和装置。 本发明提供了用于选择性地观察网络的四个主要特征。 首先，本发明考虑了选择多个对象，并且仅查看那些从所选择的对象中驱动或接收的网络。 在优选实施例中，物体的数量被放置在放置工具内。 第二，对于所选择的并且还耦合到未放置的单元的网络，本发明考虑将来自相应的所选对象的飞线提供到表示未放置的单元的近似预期位置的预定位置。 第三，本发明考虑提供一种矢量滤波器，其可以仅允许观看具有所选总线宽度范围的矢量网。 最后，本发明的第四特征设想提供一种用于仅选择性地观察跨越电路设计数据库内的预定分层边界的那些网络的装置。
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2.发明授权Method and apparatus for using a placement tool to manipulate cell substitution lists 失效使用放置工具来操纵细胞置换列表的方法和装置公开(公告)号：US06701289B1
公开(公告)日：2004-03-02
申请号：US08789029
申请日：1997-01-27
IPC分类号： G06F1750
CPC分类号： G06F17/5068 , G06F17/505
摘要： A placement tool that may import and export cell substitution and/or cell selection lists. The cell substitution and/or cell selection lists may be used by the placement tool to substitute and/or modify the placement design database, rather than the original schematic or behavioral database. This may eliminate the need to re-synthesize the circuit design during each design iteration. The present invention further contemplates providing a reset feature which may reset the circuit design database to a previous state, if desired.
摘要翻译： 可以导入和导出单元格替换和/或单元格选择列表的布局工具。 细胞替换和/或细胞选择列表可以被放置工具用于替代和/或修改放置设计数据库，而不是原始原理图或行为数据库。 这可能会消除在每次设计迭代期间重新合成电路设计的需要。 本发明还考虑提供复位特征，如果需要，可以将电路设计数据库重置为先前状态。
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