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    System and method of criticality prediction in statistical timing analysis
    62.
    发明授权
    System and method of criticality prediction in statistical timing analysis 有权
    统计时序分析中关键性预测的系统和方法

    公开(公告)号：US07437697B2

    公开(公告)日：2008-10-14

    申请号：US11303792

    申请日：2005-12-16

    申请人： Natesan Venkateswaran ,  Chandramouli Viswewariah ,  JinJun Xiong ,  Vladimir Zolotov

    发明人： Natesan Venkateswaran ,  Chandramouli Viswewariah ,  JinJun Xiong ,  Vladimir Zolotov

    IPC分类号： G06F17/50 ,  G06F9/455

    CPC分类号： G06F17/5031 ,  G06F2217/84

    摘要： A method for determining criticality probability of an edge of a timing graph of a circuit is described. The method includes forming a directed acyclic timing graph corresponding to a circuit being timed, performing statistical timing of the circuit, for each edge of interest, defining a cutset that divides the timing graph into a plurality of parts, determining an edge slack for each edge in the cutset, computing a statistical maximum of all edge slacks in the cutset, and inferring edge criticality probabilities of each edge from the statistical maximum. A system for determining criticality probability of an edge of a timing graph of a circuit is also described.

    摘要翻译： 描述了用于确定电路的时序图的边缘的临界概率的方法。 该方法包括形成对应于正在定时的电路的有向非循环时序图，对于感兴趣的每个边缘执行电路的统计定时，定义将定时图分成多个部分的切片，确定每个边缘的边缘松弛 在切片中，计算切片中所有边缘松弛的统计最大值，并从统计最大值推断每个边缘的边缘关键概率。 还描述了用于确定电路的时序图的边缘的关键概率的系统。

    System and method for accommodating non-Gaussian and non-linear sources of variation in statistical static timing analysis
    63.
    发明授权
    System and method for accommodating non-Gaussian and non-linear sources of variation in statistical static timing analysis 有权
    用于在统计静态时序分析中适应非高斯和非线性变化源的系统和方法

    公开(公告)号：US07293248B2

    公开(公告)日：2007-11-06

    申请号：US11056850

    申请日：2005-02-11

    申请人： Hongliang Chang ,  Sambasivan Narayan ,  Chandramouli Visweswariah ,  Vladimir Zolotov

    发明人： Hongliang Chang ,  Sambasivan Narayan ,  Chandramouli Visweswariah ,  Vladimir Zolotov

    IPC分类号： G06F17/50 ,  G06F9/45

    CPC分类号： G06F17/5031

    摘要： There is provided a system and method for statistical timing analysis of an electrical circuit. The system includes at least one parameter input, a statistical static timing analyzer, and at least one output. The at least one parameter input is for receiving parameters of the electrical circuit. At least one of the parameters has at least one of a non-Gaussian probability distribution and a non-linear delay effect. The statistical static timing analyzer is for calculating at least one of a signal arrival time and a signal required time for the electrical circuit using the at least one parameter. The at least one output is for outputting the at least one of the signal arrival time and the signal required time.

    摘要翻译： 提供了一种用于电路的统计时序分析的系统和方法。 该系统包括至少一个参数输入，统计静态时序分析器和至少一个输出。 至少一个参数输入用于接收电路的参数。 至少一个参数具有非高斯概率分布和非线性延迟效应中的至少一个。 统计静态时序分析器用于使用至少一个参数来计算电路的信号到达时间和信号所需时间中的至少一个。 至少一个输出用于输出信号到达时间和信号所需时间中的至少一个。

    System and method for accommodating non-gaussian and non-linear sources of variation in statistical static timing analysis
    64.
    发明申请
    System and method for accommodating non-gaussian and non-linear sources of variation in statistical static timing analysis 有权
    用于在统计静态时序分析中调节非高斯和非线性变化源的系统和方法

    公开(公告)号：US20060085775A1

    公开(公告)日：2006-04-20

    申请号：US11056850

    申请日：2005-02-11

    申请人： Hongliang Chang ,  Sambasivan Narayan ,  Chandramouli Visweswariah ,  Vladimir Zolotov

    发明人： Hongliang Chang ,  Sambasivan Narayan ,  Chandramouli Visweswariah ,  Vladimir Zolotov

    IPC分类号： G06F17/50 ,  G06F9/45

    CPC分类号： G06F17/5031

    摘要： There is provided a system and method for statistical timing analysis of an electrical circuit. The system includes at least one parameter input, a statistical static timing analyzer, and at least one output. The at least one parameter input is for receiving parameters of the electrical circuit. At least one of the parameters has at least one of a non-Gaussian probability distribution and a non-linear delay effect. The statistical static timing analyzer is for calculating at least one of a signal arrival time and a signal required time for the electrical circuit using the at least one parameter. The at least one output is for outputting the at least one of the signal arrival time and the signal required time.

    摘要翻译： 提供了一种用于电路的统计时序分析的系统和方法。 该系统包括至少一个参数输入，统计静态时序分析器和至少一个输出。 至少一个参数输入用于接收电路的参数。 至少一个参数具有非高斯概率分布和非线性延迟效应中的至少一个。 统计静态时序分析器用于使用至少一个参数来计算电路的信号到达时间和信号所需时间中的至少一个。 至少一个输出用于输出信号到达时间和信号所需时间中的至少一个。