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1. 发明申请

WO2005122028A2 LOCAL PREFERRED DIRECTION ARCHITECTURE, TOOLS, AND APPARATUS 审中-公开
标题翻译：本地优选方向架构，工具和装置
公开(公告)号：WO2005122028A2
公开(公告)日：2005-12-22
申请号：PCT/US2005/019361
申请日：2005-06-04
申请人： CADENCE DESIGN SYSTEMS, INC , HETZEL, Asmus , MALHOTRA, Anish , FUJIMURA, Akira , JACQUES, Etienne , FRANKLE, Jon , HARRISON, David, S. , FEATHER, Heath , MATVEEV, Alexandre , KING, Roger
发明人： HETZEL, Asmus , MALHOTRA, Anish , FUJIMURA, Akira , JACQUES, Etienne , FRANKLE, Jon , HARRISON, David, S. , FEATHER, Heath , MATVEEV, Alexandre , KING, Roger
IPC分类号： G06F17/50
CPC分类号： G06F17/5077
摘要： Some embodiments of the invention provide a Local Preferred Direction (LPD) wiring model for use with one or more EDA tools (such as placing, routing, etc). An LPD wiring model allows at least one wiring layer to have a set of regions that each have a different preferred direction than the particular wiring layer. In addition, each region has a local preferred direction that differs from the local preferred direction of at least one other region in the set. Furthermore, at least two regions have two different polygonal shapes and no region in the set encompasses another region in the set. Some embodiments also provide a Graphical User Interface (GUI) that facilitates a visual presentation of an LPD design layout and provides tools to create and manipulate LPD regions in a design layout.
摘要翻译：本发明的一些实施例提供了与一个或多个EDA工具（例如放置，布线等）一起使用的局部优选方向（LPD）布线模型。 LPD布线模型允许至少一个布线层具有各自具有与特定布线层不同的优选方向的一组区域。此外，每个区域具有局部优选方向，其不同于该组中至少一个其它区域的局部优选方向。此外，至少两个区域具有两个不同的多边形形状，并且该集合中的区域不包含该组中的另一区域。一些实施例还提供了一种图形用户界面（GUI），其便于LPD设计布局的视觉呈现，并提供在设计布局中创建和操纵LPD区域的工具。

2. 发明申请

WO2005122027A2 LOCAL PREFERRED DIRECTION ROUTING AND LAYOUT GENERATION 审中-公开
标题翻译：本地优选方向路由和布局生成
公开(公告)号：WO2005122027A2
公开(公告)日：2005-12-22
申请号：PCT/US2005/019359
申请日：2005-06-04
申请人： CADENCE DESIGN SYSTEMS, INC. , HETZEL, Asmus , MALHOTRA, Anish , CHERUKURI, Deepak , JACQUES, Etienne , FRANKLE, Jon
发明人： HETZEL, Asmus , MALHOTRA, Anish , CHERUKURI, Deepak , JACQUES, Etienne , FRANKLE, Jon
IPC分类号： G06F17/50
CPC分类号： G06F17/5077
摘要： Some embodiments of the invention provide a method for defining routes in a design layout. The method defines at least one particular wiring layer that has at least two regions with different local preferred wiring directions. The method then uses the differing local preferred wiring directions to define a detailed route on the wiring layer. In some embodiments, the method defines a first route that traverse first and second regions between two layers by using a first via that has a first pad in the second region. The method also defines a second route that traverses the second region and a third region in the two layers by using a second via that has a second pad in the second region, where the first and second pads have different shapes.
摘要翻译：本发明的一些实施例提供了一种用于在设计布局中定义路线的方法。该方法限定了至少一个具有不同局部优选布线方向的至少两个区域的特定布线层。然后，该方法使用不同的局部优选布线方向来在布线层上限定详细路线。在一些实施例中，该方法通过使用在第二区域中具有第一焊盘的第一通孔限定穿过两层之间的第一和第二区域的第一路由。该方法还通过使用在第二区域中具有第二焊盘的第二通孔来定义穿过第二区域的第二区域和第二区域中的第三区域，其中第一和第二焊盘具有不同的形状。

3. 发明申请

WO2004102339A2 REMOVAL OF ACUTE ANGLES IN A DESIGN LAYOUT 审中-公开
标题翻译：在设计布局中移除急性角膜
公开(公告)号：WO2004102339A2
公开(公告)日：2004-11-25
申请号：PCT/US2004/014380
申请日：2004-05-06
申请人： CADENCE DESIGN SYSTEMS, INC
发明人： JACQUES, Etienne , KRONMILLER, Tom
IPC分类号： G06F
CPC分类号： G06F1/00 , G06F15/00
摘要： Some embodiments of the invention provide novel methods for removing acute angles from routes in a design layout. The method selects a route with several segments. It then identifies an acute angle between first and second contiguous segments of the route. The method next inserts a third segment between the first and second segments, where the third segment has an associated shape that fills the acute angle between the first and second segments.
摘要翻译：本发明的一些实施例提供了用于在设计布局中从路线去除锐角的新颖方法。该方法选择具有多个段的路由。然后，它识别路线的第一和第二连续段之间的锐角。该方法接下来在第一和第二段之间插入第三段，其中第三段具有填充第一和第二段之间的锐角的相关联的形状。

4. 发明申请

WO2004051403A2 METHOD, APPARATUS, AND SYSTEM FOR ROUTING 审中-公开
标题翻译：方法，装置和路由系统
公开(公告)号：WO2004051403A2
公开(公告)日：2004-06-17
申请号：PCT/US2003/036873
申请日：2003-11-18
申请人： CADENCE DESIGN SYSTEMS, INC. , FRANKLE, Jonathan , CALDWELL, Andrew , JACQUES, Etienne , TEIG, Steven
发明人： FRANKLE, Jonathan , CALDWELL, Andrew , JACQUES, Etienne , TEIG, Steven
IPC分类号： G06F
CPC分类号： G06F1/00 , G06F17/50
摘要： Some embodiments of the invention provide a method of identifying global routes for nets in a region of a layout with multiple layers. In the region, each net has a set of routable elements. The method partitions each layer of the region into several sub-regions. For each net, the method then identifies a route that connects the sub-regions that contain the net’s set of routable elements, where some routes have at least one non-Manhattan edge and traverse sub-regions on multiple layers. Some embodiments search for a three-dimensional global path between first and second sets of routable elements in a region of a layout that has multiple layers. These embodiments partition the region into several sub-regions. They then perform a path search to identify a path between a first set of sub-regions that contains the first-set elements and a second set of sub-regions that contain a second-set element. During the path search, these embodiments explore expansions along Manhattan and non-Manhattan routing directions between the sub-regions on a plurality of layers. Some embodiments define a routing graph that has several of nodes on several layers, where each node represents a sub-region on a layer. In the graph, there is a set of edges between the nodes on each layer. On one layer, there is at least one set of edges that are neither orthogonal nor parallel to a set of edges on another layer. These embodiments then use the routing graph to identify routes.
摘要翻译：本发明的一些实施例提供了一种识别具有多个层的布局的区域中的网络的全局路由的方法。在该区域，每个网络具有一组可路由元素。该方法将该区域的每个层分成几个子区域。对于每个网络，该方法然后识别连接包含网络可路由元件集合的子区域的路由，其中一些路由具有至少一个非曼哈顿边缘并遍历多个层上的子区域。一些实施例在具有多个层的布局的区域中搜索第一和第二组可路由元件之间的三维全局路径。这些实施例将该区域划分成几个子区域。然后，他们执行路径搜索以识别包含第一集合元素的第一组子区域和包含第二集合元素的第二组子区域之间的路径。在路径搜索期间，这些实施例探索沿着曼哈顿的扩展和在多个层之间的子区域之间的非曼哈顿路由方向。一些实施例定义了在几个层上具有几个节点的路由图，其中每个节点表示层上的子区域。在图中，每层上的节点之间有一组边。在一层上，至少有一组边缘既不正交也不平行于另一层上的一组边缘。然后，这些实施例使用路由图来识别路由。

5. 发明公开

EP1756741A2 LOCAL PREFERRED DIRECTION ROUTING AND LAYOUT GENERATION 审中-公开
标题翻译： ROUTES从地方首选方向，版面制作
公开(公告)号：EP1756741A2
公开(公告)日：2007-02-28
申请号：EP05755944.5
申请日：2005-06-04
申请人： Cadence Design Systems, Inc.
发明人： HETZEL, Asmus , MALHOTRA, Anish , CHERUKURI, Deepak , JACQUES, Etienne , FRANKLE, Jon
IPC分类号： G06F17/50
CPC分类号： G06F17/5077
摘要： A method for defining routes in a design layout with at least one particular wiring layer that has at least two regions (200, 300) with different local preferred wiring directions (210, 305). The method then uses the differing local preferred wiring directions (205, 215) to define a detailed route on the wiring layer. In some embodiments, the method defines a first route (210) that traverse first (200) and second regions (300) between two layers by using a first via that has a first pad in the second region.

6. 发明公开

EP1763805A2 LOCAL PREFERRED DIRECTION ARCHITECTURE, TOOLS, AND APPARATUS 审中-公开
标题翻译：建筑，工具和设备本地优先方向
公开(公告)号：EP1763805A2
公开(公告)日：2007-03-21
申请号：EP05771286.1
申请日：2005-06-04
申请人： Cadence Design Systems, Inc.
发明人： HETZEL, Asmus , MALHOTRA, Anish , FUJIMURA, Akira , JACQUES, Etienne , FRANKLE, Jon , HARRISON, David, S. , FEATHER, Heath , MATVEEV, Alexandre , KING, Roger
IPC分类号： G06F17/50
CPC分类号： G06F17/5077
摘要： Some embodiments of the invention provide a Local Preferred Direction (LPD) wiring model for use with one or more EDA tools. An LPD wiring model allows at least one wiring layer (200) to have a set of regions (205, 210, 215) that each has a different preferred direction (-45°, 0°, 90°) than the particular wiring layer. In addition, each region (205, 210, 215) has a local preferred direction (-45°, 0°, 90°) that differs from the local preferred direction of at least one other region in the set. Furthermore, at least two regions have two different polygonal shapes and no region in the set encompasses another region in the set. Some embodiments also provide a Graphical User Interface (GUI) that facilitates a visual presentation of an LPD design layout and provides tools to create and manipulate LPD regions in a design layout.

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