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    • 46. 发明申请
    • Design Method and System for Minimizing Blind Via Current Loops
    • 设计方法和系统,最大限度地减少盲电流环路
    • US20090031270A1
    • 2009-01-29
    • US11829179
    • 2007-07-27
    • Daniel DourietAnand HaridassAndreas HuberRoger D. Weekly
    • Daniel DourietAnand HaridassAndreas HuberRoger D. Weekly
    • G06F17/50
    • G06F17/5081H05K1/0216H05K1/115H05K3/0005H05K2201/09636
    • A design method and system for minimizing blind via current loops provides for improvement of electrical interconnect structure design without requiring extensive electromagnetic analysis. Other vias in the vicinity of a blind via carrying a critical signal are checked for suitability to conduct return current corresponding to the critical signal that is disrupted by the transition from a layer between two metal planes to another layer. The distance to the return current via(s) is checked and the design is adjusted to reduce the distance if the distance is greater than a specified threshold. If the blind via transition is to an external layer, suitable vias connect the reference plane at the internal end of the blind via to an external terminal. If the transition is between internal layers, suitable vias are vias that connect the two reference planes surrounding the reference plane traversed by the blind via.
    • 用于最小化盲通过电流回路的设计方法和系统提供了电互连结构设计的改进,而不需要广泛的电磁分析。 检查通过携带关键信号的盲目附近的其他通孔是否​​适合于进行对应于由两个金属平面之间的层到另一层之间的过渡而被破坏的关键信号的返回电流。 检查通过(s)的返回电流的距离,并且如果距离大于指定的阈值,则设计被调整以减小距离。 如果盲目通过转换到外部层,合适的通孔将盲通孔内部的参考平面连接到外部端子。 如果过渡在内层之间,合适的通孔是连接围绕由盲孔通过的参考平面的两个参考平面的通孔。
    • 47. 发明申请
    • SYSTEM DC ANALYSIS METHODOLOGY
    • 系统直流分析方法
    • US20080294414A1
    • 2008-11-27
    • US12187164
    • 2008-08-06
    • Daniel DourietAnand HaridassAndreas HuberColm B. O'ReillyBao Gia-Harvey TruongRoger D. Weekly
    • Daniel DourietAnand HaridassAndreas HuberColm B. O'ReillyBao Gia-Harvey TruongRoger D. Weekly
    • G06F17/50
    • G06F17/5036
    • A computer program product is provided for power delivery analysis and design for a hierarchical system. The product includes a storage medium, readable by a processing circuit, for storing instructions for execution by the processing circuit for facilitating a method. The method includes building a model corresponding to each element of the hierarchical system, and compiling a repository that contains models corresponding to each element, where the repository includes a net list, a domain list, a component list, a pin list, and a layer list. The method also includes performing optimized gridding for each element, the net list, the domain list, the component list, the pin list, and the layer list; assembling a system model from the models contained in the repository; flattening the system model by converting the system model to a flattened system model that consists entirely of resistors; and running a simulation on the flattened system model.
    • 提供计算机程序产品用于分层系统的功率传递分析和设计。 该产品包括可由处理电路读取的存储介质,用于存储由处理电路执行以便于方法的指令。 该方法包括构建与分级系统的每个元素相对应的模型,以及编译包含与每个元素对应的模型的仓库,其中仓库包括网络列表,域列表,组件列表,引脚列表和层 列表。 该方法还包括对每个元素,网络列表,域列表,组件列表,引脚列表和层列表执行优化的网格化; 从存储库中包含的模型组装系统模型; 通过将系统模型转换为完全由电阻组成的扁平化系统模型来平坦化系统模型; 并在扁平化系统模型上运行模拟。