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    • 11. 发明申请
    • LOGIC DIFFERENCE SYNTHESIS
    • 逻辑差异综合
    • US20110004857A1
    • 2011-01-06
    • US12497499
    • 2009-07-02
    • Jeremy T. HopkinsJohn M. IsaksonJoachim KeinertSmita KrishnaswamyNilesh A. ModiRuchir PuriHaoxing RenDavid L. Rude
    • Jeremy T. HopkinsJohn M. IsaksonJoachim KeinertSmita KrishnaswamyNilesh A. ModiRuchir PuriHaoxing RenDavid L. Rude
    • G06F17/50
    • G06F17/505
    • A computer executed method is disclosed which accepts an original circuit with an original logic, accepts a modified circuit, and synthesizes a difference circuit. The difference circuit represents changes that implement the modified circuit's logic for the original circuit. The synthesis may locate an output-side boundary in the original logic in such a manner that the original logic is free of logic changes inbetween the output-side boundary and the primary output elements of the original circuit. The disclosed synthesis may also locate an input-side boundary in the original logic in such a manner that the original logic is free of logic changes inbetween the input-side boundary and the primary input elements of the original circuit. A computer program products are also disclosed. The computer program product contains a computer useable medium having a computer readable program code embodied therein. The computer readable program code when executed on a computer causes the computer to carry out the methods of finding input and output side boundaries in an original logic, and synthesizing inbetween those boundaries a difference circuit representing logic changes.
    • 公开了一种用原始逻辑接收原始电路的计算机执行方法,接受修改的电路,并且合成差分电路。 差分电路表示实现原始电路的修改电路逻辑的变化。 合成可以将原始逻辑中的输出侧边界定位成使得原始逻辑在原始电路的输出侧边界和初级输出元件之间没有逻辑改变。 所公开的合成还可以以原始逻辑在原始电路的输入侧边界和主要输入元件之间没有逻辑改变的方式将原始逻辑中的输入侧边界定位。 还公开了一种计算机程序产品。 计算机程序产品包含具有体现在其中的计算机可读程序代码的计算机可用介质。 计算机可读程序代码在计算机上执行时,使得计算机执行在原始逻辑中寻找输入和输出侧边界的方法,并且在这些边界之间合成表示逻辑变化的差分电路。
    • 13. 发明授权
    • Charge recycling between power domains of integrated circuits
    • 集成电路电源域之间的充电回收
    • US08972758B2
    • 2015-03-03
    • US13307915
    • 2011-11-30
    • Harry BarowskiJoachim KeinertAntje MuellerTim Niggemeier
    • Harry BarowskiJoachim KeinertAntje MuellerTim Niggemeier
    • G06F1/32G06F1/00
    • G06F1/3234G06F1/3287Y02D10/171Y10T307/76
    • A mechanism is provided for efficiently recycling a charge from a power domain that is discharging. A side of a discharging power domain normally coupled to a voltage supply is disconnected from the voltage supply. The side of the precharging power domain normally coupled to the voltage supply is currently disconnected from the voltage supply. The side of the discharging power domain normally coupled to the voltage supply is connected to a side of the precharging power domain normally coupled to the voltage supply. A side of the discharging power domain normally coupled to the ground is disconnected from ground. The side of the discharging power domain normally coupled to ground is connected to the voltage supply, thereby precharging the precharging power domain with the charge from the discharging power domain that would normally he lost due to leakage.
    • 提供了一种用于从放电的动力区域有效地再循环电荷的机构。 通常耦合到电压源的放电电源域的一侧与电压源断开。 通常耦合到电压源的预充电功率域的一侧当前与电压源断开。 通常耦合到电压源的放电功率域的一侧连接到通常耦合到电压源的预充电功率域的一侧。 通常耦合到地面的放电电源域的一侧与地面断开。 通常耦合到地的放电电源域的一侧连接到电压源,从而由通常由于泄漏而损失的放电电源域的电荷预充电预充电功率域。
    • 14. 发明授权
    • Performing reliability analysis of signal wires
    • 执行信号线的可靠性分析
    • US08463571B2
    • 2013-06-11
    • US12944892
    • 2010-11-12
    • Soroush AbbaspourAyesha AkhterPeter FeldmannJoachim Keinert
    • Soroush AbbaspourAyesha AkhterPeter FeldmannJoachim Keinert
    • G06F19/00G01R19/00
    • G06F17/5036
    • A computer-implemented system, method, and storage device simulate a periodic voltage waveform in a network model of the integrated circuit design. The method then determines resultant current values in each segment of nets of the integrated circuit design resulting from the periodic voltage waveform and performs a Fourier transform of the periodic voltage waveform to generate a frequency domain representation of the periodic voltage waveform. The frequency domain representation comprises multiple Fourier terms, each of the Fourier terms is a frequency that is a multiple of the base frequency. Next, the method performs an AC analysis of the resultant voltage at each frequency of the multiple Fourier terms. The AC analysis provides an electrical current value for each of the frequencies of the Fourier terms for each of the nets. This allows the method to compute a root mean square current through each of the nets based on the AC analysis. Then, the method determines whether the root mean square current for any of the segments of the nets exceeds a current limit, and reports any segment of the nets for which the root mean square current exceeds the current limit.
    • 计算机实现的系统,方法和存储设备模拟集成电路设计的网络模型中的周期性电压波形。 然后,该方法确定由周期性电压波形产生的集成电路设计的网络的每个段中的合成电流值,并执行周期性电压波形的傅立叶变换以产生周期性电压波形的频域表示。 频域表示包括多个傅立叶项,每个傅立叶项是基频的倍数的频率。 接下来,该方法对多傅里叶项的每个频率进行所得到的电压的AC分析。 AC分析为每个网络的傅立叶项的每个频率提供电流值。 这允许该方法基于AC分析来计算通过每个网络的均方根电流。 然后,该方法确定网络的任何段的均方根电流是否超过电流限制,并且报告均方根电流超过电流极限的网络的任何段。
    • 15. 发明授权
    • Using port obscurity factors to improve routing
    • 使用端口隐蔽因素来改善路由
    • US08418110B2
    • 2013-04-09
    • US12875081
    • 2010-09-02
    • Joachim KeinertThomas Ludwig
    • Joachim KeinertThomas Ludwig
    • G06F17/50
    • G06F17/5077
    • An integrated circuit characterized by a netlist may be routed using a routing priority list that may be created using port obscurity factors. A port obscurity factor may indicate how difficult it may be to route to that port and may be calculated as being inversely proportional to the number of routing tracks that may be connectable to that port. Routing priorities for the nets of the netlist may then be created using the port obscurity factors of the ports in the net. Routing may then be done in the order determined by the routing priority list and the generated layout information stored in a computer useable medium. In some cases, routing may be performed using multiple routing passes where a new routing priority list may be calculated for each routing pass.
    • 以网表为特征的集成电路可以使用可以使用端口遮蔽因素创建的路由优先级列表进行路由。 端口遮蔽因素可以指示路由到该端口是多么困难,并且可以被计算为与可以连接到该端口的路由轨道的数量成反比。 可以使用网络端口的端口隐含因素来创建网表的网络优先级。 然后可以按路由优先级列表确定的顺序和存储在计算机可用介质中的生成的布局信息来完成路由。 在某些情况下,路由可以使用多个路由遍历来执行,其中可以针对每个路由选路来计算新的路由优先级列表。
    • 16. 发明申请
    • POST TIMING LAYOUT MODIFICATION FOR PERFORMANCE
    • 启动时序布局修改性能
    • US20130074025A1
    • 2013-03-21
    • US13236977
    • 2011-09-20
    • Uwe FassnachtVeit GernhoeferMichael S. GrayJoachim Keinert
    • Uwe FassnachtVeit GernhoeferMichael S. GrayJoachim Keinert
    • G06F17/50
    • G06F17/5068G06F2217/84
    • A mechanism is provided for post timing layout modification for performance. The mechanism selectively applies layout modification based on timing analysis at the path level. The mechanism applies stress only to transistors that are in a setup critical path without applying stress to transistors in hold critical paths. The mechanism may use a method to apply stress to improve performance of a transistor in a setup critical path, as long as the stress does not also improve performance of a neighboring transistor in a hold critical path. In some instances, the mechanism may apply stress to improve performance of a transistor in a setup critical path while simultaneously degrading performance of a transistor in a hold critical path.
    • 提供了一种用于性能的后期时序布局修改的机制。 该机制基于路径级别的时序分析,选择性地应用布局修改。 该机制仅将压力应用于处于设置关键路径的晶体管,而不对保持关键路径中的晶体管施加压力。 该机制可以使用施加应力以提高晶体管在设置关键路径中的性能的方法,只要该应力不会改善保持关键路径中的相邻晶体管的性能即可。 在一些情况下,该机制可以施加应力以改善设置关键路径中的晶体管的性能,同时降低保持关键路径中的晶体管的性能。
    • 19. 发明授权
    • Phase splitter with latch
    • 相分离器带闩锁
    • US4614885A
    • 1986-09-30
    • US630544
    • 1984-07-13
    • Rudolf BroschJoachim KeinertErich KlinkFriedrich C. Wernicke
    • Rudolf BroschJoachim KeinertErich KlinkFriedrich C. Wernicke
    • H03K3/286H03K3/288H03K5/02H03K5/151H03K3/023
    • H03K3/288
    • A phase splitter with latch comprises a true complement generator in the form of a current switch (T1, T2, T3, R3) which supplies two complementary output signals in response to an input signal (VIN). The outputs of this true complement generator are in each case connected to an associated emitter follower (T4, T5). The two emitter followers (T4, T5) have identical emitter resistors (R6, R7) which simultaneously serve as collector load resistors of two cross-coupled transistors (T6, T7) also comprise identical but higher emitter resistors (R13, R14) than the emitter followers (T6, T7). The emitters of the cross-coupled transistors (T6, T7) are each connected to one of the two inputs of an output stage (T8, T9, T11) consisting of a current switch. This current switch is connected to operating voltage (VEE) through a clock-controlled transistor (T11). Upon actuation of the output stage, i.e., when transistor (T11) is on, the active emitter resistance of one of the cross-coupled transistors (T6, T7) is pulled below the value of the emitter resistors (R6, R7) of the emitter followers (T4, T5), thus causing the latch circuit to be latched as a function of the input signal.
    • 具有锁存器的分相器包括形式为电流开关(T1,T2,T3,R3)形式的真互补发生器,其根据输入信号(VIN)提供两个互补输出信号。 这种真互补发生器的输出在每种情况下都连接到相关的射极跟随器(T4,T5)。 两个发射极跟随器(T4,T5)具有相同的发射极电阻(R6,R7),其同时用作两个交叉耦合晶体管(T6,T7)的集电极负载电阻,其也包括相同但较高的发射极电阻(R13,R14) 发射极跟随器(T6,T7)。 交叉耦合晶体管(T6,T7)的发射极各自连接到由电流开关组成的输出级(T8,T9,T11)的两个输入之一。 该电流开关通过时钟控制的过渡器(T11)连接到工作电压(VEE)。 在激励输出级时,即当晶体管(T11)导通时,其中一个交叉耦合晶体管(T6,T7)的有源发射极电阻被拉低到低于发射极电阻(R6,R7)的值 发射极跟随器(T4,T5),从而使闩锁电路根据输入信号被锁存。
    • 20. 发明授权
    • Providing secondary power pins in integrated circuit design
    • 在集成电路设计中提供二次电源引脚
    • US08495547B2
    • 2013-07-23
    • US12910336
    • 2010-10-22
    • Joachim KeinertDouglass T. LambPeter J. Osler
    • Joachim KeinertDouglass T. LambPeter J. Osler
    • G06F17/50
    • G06F17/5077
    • An integrated circuit (IC) design with multiple metal layers containing cells requiring secondary power supply. After placing the cells and stripes of a primary power/ground grid in metal layers of the IC design, specific cells are provided with secondary power stripes in a first metal layer. The secondary power stripes are designed in such a way that each secondary power/ground stripe exhibits a full overlap with a stripe of a corresponding primary power/ground grid in a different metal layer. Subsequently, signals from the IC design are routed, and power vias between the primary power/ground grid stripes and the secondary power/ground stripes are generated.
    • 集成电路(IC)设计,具有多个含有需要二次电源的电池的金属层。 在将主电源/接地网格的电池和条纹放置在IC设计的金属层中之后,特定电池在第一金属层中设置有次级电源条。 次级功率条纹被设计成使得每个次级电源/接地条带与不同金属层中的对应的主电源/接地网格的条带完全重叠。 随后,来自IC设计的信号被路由,并且产生主电源/接地网格条和次级电源/接地条之间的电源通孔。