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    • 7. 发明授权
    • Constraint data management for electronic design automation
    • 电子设计自动化的约束数据管理
    • US07003749B2
    • 2006-02-21
    • US10755557
    • 2004-01-12
    • Pero SubasicGeorge Bogdan Arsintescu
    • Pero SubasicGeorge Bogdan Arsintescu
    • G06F17/50
    • G06F17/5072
    • In a method of determining the existence of one or more conflicts in the placement or configuration of circuit objects defining a circuit, a number of constraints is defined, each of which imposes at least one limitation on at least one circuit object. A number of constraint families is then defined, each of which includes a subset of interrelated constraints. For each of a subset of the constraint families, a determination is made if a conflict exists between the constraints thereof. If not, pairs of constraint families are defined from the plurality constraint families. For each of a subset of the pairs of constraint families, a determination is made if a conflict exists between the constraints thereof. If not, the circuit objects defining the circuit are laid out subject to the constraints.
    • 在确定定义电路的电路对象的布置或配置中存在一个或多个冲突的方法中,定义了若干约束,每个约束对至少一个电路对象施加至少一个限制。 然后定义多个约束族,每个约束族包括相关约束的子集。 对于约束族的子集中的每一个,确定在其约束之间是否存在冲突。 如果不是,则从多个约束系列中定义约束族对。 对于约束系列对的子集中的每一个,确定在其约束之间是否存在冲突。 如果没有,定义电路的电路对象将受限于约束。
    • 10. 发明授权
    • Performance modeling for circuit design
    • 电路设计性能建模
    • US07003745B2
    • 2006-02-21
    • US10638625
    • 2003-08-11
    • Pero SubasicRodney Phelps
    • Pero SubasicRodney Phelps
    • G06F17/50G06F10/13
    • G06F17/5068
    • Each circuit simulation performed on unique layout of circuit devices generates a design point (DP) that includes device variable values and performance goal values. Circuit models for at least one performance goal are determined as a function of a first subset of the DPs. A performance goal value is determined for each circuit model based on the device variable values obtained from a second subset of the DPs. Errors are determined between the thus determined value of each performance goal and values of the corresponding performance goals obtained from the second subset of the DPs. Input values of device variables are processed with at least one of the circuit models having the smallest error associated therewith to determine therefor a performance goal value. A layout of the circuit devices is generated based on the input device variable values associated with at least one of the thus determined performance goals.
    • 在电路设备的独特布局上执行的每个电路仿真产生包括设备变量值和性能目标值的设计点(DP)。 作为DP的第一子集的函数确定至少一个性能目标的电路模型。 基于从DP的第二子集获得的设备变量值,为每个电路模型确定性能目标值。 在这样确定的每个绩效目标的值和从DP的第二子集获得的相应的绩效目标的值之间确定错误。 使用具有与其相关联的最小误差的至少一个电路模型来处理设备变量的输入值,以确定性能目标值。 基于与由此确定的性能目标中的至少一个相关联的输入设备变量值来生成电路设备的布局。