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    Hydrocarbon vapor evacuation system
    1.
    发明授权
    Hydrocarbon vapor evacuation system 有权

    公开(公告)号：US06581580B2

    公开(公告)日：2003-06-24

    申请号：US09768770

    申请日：2001-01-24

    申请人： David Karl Trumpy ,  Philip J Johnson

    发明人： David Karl Trumpy ,  Philip J Johnson

    IPC分类号： F02M3302

    CPC分类号： F02M33/02

    摘要： A vapor evacuation system that is used to intermittently remove hydrocarbon vapors from vehicle components to an available vapor storage canister using an electrically controlled small flow rate vapor-handling pump. The vapor-handling pump is intermittently turned on and off as a function of ambient temperature or inlet manifold temperature and as a function of time since last engine-on operation.

    Method of extracting parasitic capacitance values from the physical design of an integrated circuit
    5.
    发明授权
    Method of extracting parasitic capacitance values from the physical design of an integrated circuit 失效
    从集成电路的物理设计中提取寄生电容值的方法

    公开(公告)号：US5706206A

    公开(公告)日：1998-01-06

    申请号：US566248

    申请日：1995-12-01

    申请人： Mark E. Hammer ,  Philip J. Johnson

    发明人： Mark E. Hammer ,  Philip J. Johnson

    IPC分类号： H01L21/82 ,  G01R27/26 ,  G06F17/50

    CPC分类号： G06F17/5081 ,  G01R27/2605

    摘要： A method of extracting parasitic capacitance values from the physical design of an integrated circuit, and more particularly, to a method of extracting lateral coupling and fringing capacitance values from the physical design of an integrated circuit, wherein the integrated circuit comprises multiple layers of conductors, each conductor having one or more lateral edges. The method comprises the steps of identifying each conductor's one or more lateral edges; fragmenting the lateral edges of each conductor into edge fragments based on a number of conductors present in layers above and/or below a given lateral edge; identifying the edge fragments which are laterally adjacent to each edge fragment; computing one or more relationships between an edge fragment and each of its laterally adjacent edge fragments; retrieving parasitic capacitance data for each edge fragment; and using the retrieved parasitic capacitance data to compute one or more parasitic capacitance values for each edge fragment. Disadvantages of prior methods are overcome in that extracted lateral coupling capacitances are based on the presence of conductors running above and/or below a given lateral conductor edge, and fringing capacitances are based on the spacing between a given lateral conductor edge and a laterally adjacent conductor edge.

    摘要翻译： 一种从集成电路的物理设计中提取寄生电容值的方法，更具体地说，涉及从集成电路的物理设计中提取横向耦合和边缘电容值的方法，其中集成电路包括多层导体， 每个导体具有一个或多个横向边缘。 该方法包括以下步骤：识别每个导体的一个或多个横向边缘; 基于存在于给定侧边缘上方和/或下方的层中的多个导体，将每个导体的横向边缘分段成边缘碎片; 识别与每个边缘片段横向相邻的边缘片段; 计算边缘片段与其每个横向相邻边缘片段之间的一个或多个关系; 检索每个边缘片段的寄生电容数据; 并且使用所检索的寄生电容数据来计算每个边缘片段的一个或多个寄生电容值。 克服现有方法的缺点在于提取的横向耦合电容基于在给定横向导体边缘上方和/或下方运行的导体的存在，并且边缘电容基于给定横向导体边缘和横向相邻导体之间的间隔 边缘。