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1. 发明授权

US06609228B1 Latch clustering for power optimization 失效
标题翻译：锁存聚类功能优化
公开(公告)号：US06609228B1
公开(公告)日：2003-08-19
申请号：US09713571
申请日：2000-11-15
申请人： Paul H. Bergeron , Keith M. Carrig , Alvar A. Dean , Roger P. Gregor , David J. Hathaway , David E. Lackey , Harold E. Reindel , Larry Wissel
发明人： Paul H. Bergeron , Keith M. Carrig , Alvar A. Dean , Roger P. Gregor , David J. Hathaway , David E. Lackey , Harold E. Reindel , Larry Wissel
IPC分类号： G06F1750
CPC分类号： G06F17/5072 , G06F2217/78
摘要： A method and structure of clock optimization including creating an initial placement of clock feeding circuits according to clock signal requirements; identifying clusters of the clock feeding circuits, wherein each cluster includes a distinct clock signal supply device to which each clock feeding circuit within the cluster is connected; changing pin connections between the clock feeding circuits and clock signal supply devices to switch selected ones of the clock feeding circuits to different clusters to reduce lengths of wires between the clock feeding circuits and the clock signal supply devices within each cluster; and adjusting positions of the clock feeding circuits within design constraints to further reduce the lengths of the wires.
摘要翻译：时钟优化的方法和结构，包括根据时钟信号要求创建时钟馈电电路的初始放置; 识别所述时钟馈送电路的簇，其中每个簇包括与所述簇内的每个时钟馈送电路连接的不同的时钟信号供应装置; 改变时钟馈电电路和时钟信号供应装置之间的引脚连接，以将选定的时钟馈电电路切换到不同的簇，以减少时钟馈送电路和每个集群内的时钟信号供应装置之间的导线长度; 以及在设计约束内调整时钟馈电电路的位置，以进一步减少电线的长度。

2. 发明授权

US06792582B1 Concurrent logical and physical construction of voltage islands for mixed supply voltage designs 失效
标题翻译：用于混合电源电压设计的并联电压岛的逻辑和物理构造
公开(公告)号：US06792582B1
公开(公告)日：2004-09-14
申请号：US09713829
申请日：2000-11-15
申请人： John M Cohn , Alvar A. Dean , David J. Hathaway , David E. Lackey , Thomas M. Lepsic , Susan K. Lichtensteiger , Scott A. Tetreault , Sebastian T. Ventrone
发明人： John M Cohn , Alvar A. Dean , David J. Hathaway , David E. Lackey , Thomas M. Lepsic , Susan K. Lichtensteiger , Scott A. Tetreault , Sebastian T. Ventrone
IPC分类号： G06F1750
CPC分类号： G06F17/5045 , G06F17/5068
摘要： Both logical and physical construction of voltage islands is disclosed. A semiconductor chip design is partitioned into “bins”, which are areas of the design. In this way, a semiconductor chip design may be “sliced” into various areas and the areas may then be assigned to various voltage levels. Each bin may be thought of as a voltage island. Circuits in the design can be added to or removed from the various bins, thereby increasing or decreasing the speed and power of the circuits: the speed and power increase if a circuit is placed into a bin assigned a higher voltage, and the speed and power decrease if a circuit is placed into a bin having a lower voltage. The size and location of the bins may also be changed. By iterating these steps, the optimum power consumption may be met while still meeting speed constraints and other criteria. The present invention is applicable to any placement environment, such as an annealing placement tool, that proceeds through successive refinement of the locations of the circuits on the design and in which the placement process may be interrupted to make changes in placement of the logic.
摘要翻译：公开了电压岛的逻辑和物理结构。半导体芯片设计被划分为“箱”，这是设计的区域。以这种方式，可以将半导体芯片设计“切片”成各种区域，然后将这些区域分配给各种电压电平。每个仓可以被认为是电压岛。设计中的电路可以添加到各个机箱中或从各个机箱中移除，从而增加或减少电路的速度和功率：如果将电路放入分配较高电压的箱体中，速度和功率会增加，速度和功率如果将电路放置在具有较低电压的箱中，则减小。还可以改变箱子的大小和位置。通过迭代这些步骤，可以在满足速度限制和其他标准的同时满足最佳功耗。本发明可应用于诸如退火放置工具的任何放置环境，其通过连续细化设计上的电路的位置并且其中可以中断放置过程以使逻辑的放置变化。

3. 发明授权

US06636995B1 Method of automatic latch insertion for testing application specific integrated circuits 失效
标题翻译：用于测试专用集成电路的自动锁存插入方法
公开(公告)号：US06636995B1
公开(公告)日：2003-10-21
申请号：US09615146
申请日：2000-07-13
申请人： Alvar A. Dean , Joseph A. Iadanza , David E. Lackey , Sebastian T. Ventrone
发明人： Alvar A. Dean , Joseph A. Iadanza , David E. Lackey , Sebastian T. Ventrone
IPC分类号： G01R3128
CPC分类号： G01R31/318357 , G06F17/5022
摘要： A method of testing a digital logic circuit comprises first providing a logic circuit having a plurality of interconnected circuits each having an input and an output; determining a gate level representation of the logic circuit including test nets for determining faults in the circuit; and identifying a portion of the nets which are most difficult to test, including nets which are most difficult to control and nets which are most difficult to observe. The method then includes inserting into the logic circuit control latches for nets which are determined to be most difficult to control and inserting into the logic circuit observation latches for nets which are determined to be most difficult to observe. Using the inserted control latches and observation latches, the method further includes testing the nets which are determined to be most difficult to control and nets which are hardest to observe and determining faults in the circuit. As a result of the method of the present invention, testing is completed in a time faster than if the nets were tested without the control latches and the observation latches. The portion of the nets which are most difficult to test are preferably identified by overall test time impact, and the nets having longest test times are determined to be most difficult to control and most difficult to observe.
摘要翻译：一种测试数字逻辑电路的方法包括：首先提供具有多个互连电路的逻辑电路，每个互连电路具有输入和输出; 确定逻辑电路的门级表示，包括用于确定电路中的故障的测试网; 并且识别最难测试的网的一部分，包括最难控制的网和最难观察的网。该方法然后包括将被确定为最难控制并插入用于被确定为最难观察的网络的逻辑电路观察锁存器的网络的逻辑电路控制锁存器插入。使用插入的控制锁存器和观察锁存器，该方法还包括测试被确定为最难控制的网络，并且网络中难以观察和确定电路中的故障。作为本发明的方法的结果，比没有控制锁存器和观察锁存器测试网络的时间更快地完成测试。最难测试的网的部分优选通过整体测试时间的影响来确定，并且确定具有最长测试时间的网最难以控制并且最难观察。

4. 发明授权

US06687883B2 System and method for inserting leakage reduction control in logic circuits 有权
标题翻译：用于在逻辑电路中插入泄漏减少控制的系统和方法
公开(公告)号：US06687883B2
公开(公告)日：2004-02-03
申请号：US09750969
申请日：2000-12-28
申请人： John M. Cohn , Alvar A. Dean , David J. Hathaway , Sebastian T. Ventrone
发明人： John M. Cohn , Alvar A. Dean , David J. Hathaway , Sebastian T. Ventrone
IPC分类号： G06F1750
CPC分类号： G06F1/3243 , G06F1/3203 , Y02D10/152 , Y02D50/20
摘要： A method for reducing leakage power of a logic network comprising the steps of: using (observability) don't care information to identify “sleep states” for individual nets; determining based on probabilistic analysis at least one net in which expected power consumption will be reduced by forcing a net to a particular value during at least a portion of a “sleep state”; and forcing the determined net to the determined value determined portion of that “sleep state”.
摘要翻译：一种用于减少逻辑网络的泄漏功率的方法，包括以下步骤：使用（可观察性）不关心信息以识别各个网络的“睡眠状态”; 基于概率分析确定至少一个网络，其中通过在“睡眠状态”的至少一部分期间将网络强制为特定值来减少预期功率消耗; 并将所确定的网络强制为所述“睡眠状态”的确定值确定部分。

5. 发明授权

US06985004B2 Wiring optimizations for power 失效
公开(公告)号：US06985004B2
公开(公告)日：2006-01-10
申请号：US09781369
申请日：2001-02-12
申请人： John M. Cohn , Alvar A. Dean , Amir H. Farrahi , David J. Hathaway , Thomas M. Lepsic , Jagannathan Narasimhan , Scott A. Tetreault , Sebastian T. Ventrone
发明人： John M. Cohn , Alvar A. Dean , Amir H. Farrahi , David J. Hathaway , Thomas M. Lepsic , Jagannathan Narasimhan , Scott A. Tetreault , Sebastian T. Ventrone
IPC分类号： H03K17/16
CPC分类号： G06F17/5072 , G06F17/5022 , G06F17/5077
摘要： An electrical wiring structure and method of designing thereof. The method identifies at least one wire pair having a first wire and a second wire. The second wire is already tri-stated or can be tri-stated. The wire pair may have a same-direction switching probability per clock cycle that is no less than a predetermined or user-selected minimum same-direction switching probability. Alternatively, the wire pair may have an opposite-direction switching probability per clock cycle that is no less than a predetermined or user-selected minimum opposite-direction switching probability. The first wire and the second wire satisfy at least one mathematical relationship involving: a spacing between the first wire and the second wire; and a common run length of the first wire and the second wire.

6. 发明授权

US06711719B2 Method and apparatus for reducing power consumption in VLSI circuit designs 失效
标题翻译：用于降低VLSI电路设计中的功耗的方法和装置
公开(公告)号：US06711719B2
公开(公告)日：2004-03-23
申请号：US09928573
申请日：2001-08-13
申请人： John Maxwell Cohn , Alvar A. Dean , Amir H. Farrahi , David J. Hathaway , Thomas Michael Lepsic , Patrick Edward Perry , Scott A. Tetreault , Sebastian T. Ventrone
发明人： John Maxwell Cohn , Alvar A. Dean , Amir H. Farrahi , David J. Hathaway , Thomas Michael Lepsic , Patrick Edward Perry , Scott A. Tetreault , Sebastian T. Ventrone
IPC分类号： G06F1750
CPC分类号： G06F17/505 , G06F2217/78
摘要： In integrated circuit (IC) designs, a component of power consumed may be represented as Power=½ FCV2, where C is the load capacitance being driven by a source cell, F is the switching frequency of the source cell, and V is the total output voltage swing. However, not every signal value generated by a source cell is required to propagate to all the sink cells connected to the source for every clock cycle of a chip. Accordingly, an isolate cell is inserted in a net (wire) connecting a source cell to at least one sink cell, to de-couple the at least one sink cell and a portion of the net from the source cell when a signal output by the source need not propagate. Due to the de-coupling, the load capacitance associated with the at least one sink and net portion is not experienced by the source cell for such signals. Accordingly, overall IC power consumption is reduced.
摘要翻译：在集成电路（IC）设计中，功率消耗的分量可以表示为功率=½FCV <2>，其中C是由源单元驱动的负载电容，F是源单元的开关频率，V 是总输出电压摆幅。然而，不是由源单元产生的每个信号值都不需要传播到芯片的每个时钟周期连接到源的所有宿单元。因此，将隔离单元插入到将源单元连接到至少一个宿单元的网络（有线）中，以便当由所述源单元输出的信号从所述源单元输出时，将所述至少一个宿单元和所述网的一部分与所述源单元分离源不需要传播。由于去耦合，与至少一个接收器和净部分相关联的负载电容对于这种信号不被源单元体验。因此，整体IC功耗降低。

7. 发明授权

US07346875B2 Wiring optimizations for power 有权
标题翻译：电力接线优化
公开(公告)号：US07346875B2
公开(公告)日：2008-03-18
申请号：US11176712
申请日：2005-07-07
申请人： John M. Cohn , Alvar A. Dean , Amir H. Farrahi , David J. Hathaway , Thomas M. Lepsic , Jagannathan Narasimhan , Scott A. Tetreault , Sebastian T. Ventrone
发明人： John M. Cohn , Alvar A. Dean , Amir H. Farrahi , David J. Hathaway , Thomas M. Lepsic , Jagannathan Narasimhan , Scott A. Tetreault , Sebastian T. Ventrone
IPC分类号： G06F17/50
CPC分类号： G06F17/5072 , G06F17/5022 , G06F17/5077
摘要： An electrical wiring structure and method of designing thereof. The method identifies at least one wire pair having a first wire and a second wire. The second wire is already tri-stated or can be tri-stated. The wire pair may have a same-direction switching probability per clock cycle that is no less than a predetermined or user-selected minimum same-direction switching probability. Alternatively, the wire pair may have an opposite-direction switching probability per clock cycle that is no less than a predetermined or user-selected minimum opposite-direction switching probability. The first wire and the second wire satisfy at least one mathematical relationship involving: a spacing between the first wire and the second wire; and a common run length of the first wire and the second wire.
摘要翻译：电气布线结构及其设计方法。该方法识别具有第一线和第二线的至少一个线对。第二根线已经是三态的，也可以是三态的。线对可以具有不小于预定或用户选择的最小相同方向切换概率的每时钟周期的相同方向的切换概率。或者，线对可以具有不小于预定或用户选择的最小相反方向切换概率的每时钟周期的相反方向切换概率。第一线和第二线满足至少一个数学关系，涉及：第一线和第二线之间的间隔; 以及第一线和第二线的公共行程长度。

8. 发明授权

US07469395B2 Wiring optimizations for power 有权
标题翻译：电力接线优化
公开(公告)号：US07469395B2
公开(公告)日：2008-12-23
申请号：US11952544
申请日：2007-12-07
申请人： John M. Cohn , Alvar A. Dean , Amir H. Farrahi , David J. Hathaway , Thomas M. Lepsic , Jagannathan Narasimhan , Scott A. Tetreault , Sebastian T. Ventrone
发明人： John M. Cohn , Alvar A. Dean , Amir H. Farrahi , David J. Hathaway , Thomas M. Lepsic , Jagannathan Narasimhan , Scott A. Tetreault , Sebastian T. Ventrone
IPC分类号： G06F17/50
CPC分类号： G06F17/5072 , G06F17/5022 , G06F17/5077
摘要： An electrical wiring structure and a computer system for designing the electrical wiring structure. The electrical wiring structure includes a wire pair. The wire pair includes a first wire and a second wire. The second wire is slated for being tri-stated. The wire pair has a same-direction switching probability φSD per clock cycle that is no less than a pre-selected minimum same-direction switching probability φSD,MIN or has an opposite-direction switching probability φOD per clock cycle that is no less than a pre-selected minimum opposite-direction switching probability φOD,MIN. The first wire and the second wire satisfies at least one mathematical relationship involving LCOMMON and WSPACING, where WSPACING is defined as a spacing between the first wire and the second wire, and LCOMMON is defined as a common run length of the first wire and the second wire.
摘要翻译：一种用于设计电气布线结构的电气布线结构和计算机系统。电气配线结构包括电线对。线对包括第一线和第二线。第二根电线被预定为三态。线对具有每时钟周期相同方向的切换概率phiSD，其不小于预先选择的最小相同方向切换概率phiSD，MIN或具有不小于a的每个时钟周期的相反方向切换概率phiOD 预先选择的最小相反方向切换概率phiOD，MIN。第一线和第二线满足涉及LCOMMON和WSPACING的至少一个数学关系，其中WSPACING被定义为第一线和第二线之间的间隔，并且LCOMMON被定义为第一线和第二线的公共行程长度线。

9. 发明授权

US06275968B1 Apparatus and method to reduce node toggling in semiconductor devices 失效
标题翻译：减少半导体器件中的节点切换的装置和方法
公开(公告)号：US06275968B1
公开(公告)日：2001-08-14
申请号：US09129921
申请日：1998-08-06
申请人： Alvar A. Dean , Kenneth J. Goodnow , Sebastian T. Ventrone
发明人： Alvar A. Dean , Kenneth J. Goodnow , Sebastian T. Ventrone
IPC分类号： G06F1750
CPC分类号： G06F1/32 , G06F1/04 , G06F17/505
摘要： According to the preferred embodiment, a device and method for reducing power consumption by reducing unneeded node toggling is provided. The preferred embodiment reduces unneeded toggling that commonly occurs in many types of logic circuits. The preferred embodiment reduces unneeded node toggling in a circuit by holding a portion of the device at the previous output until the all the inputs have stabilized to their final value during each clock cycle. This reduces power consumption in the device that would normally occur due to unnecessary node toggling.
摘要翻译：根据优选实施例，提供了一种通过减少不需要的节点切换来降低功耗的装置和方法。优选实施例减少了通常在许多类型的逻辑电路中发生的不必要的切换。优选实施例通过将设备的一部分保持在先前输出来减少电路中的不需要的节点切换，直到所有输入在每个时钟周期内稳定到其最终值。这减少了由于不必要的节点切换而通常发生的设备中的功耗。

10. 发明授权

US6097241A ASIC low power activity detector to change threshold voltage 有权
标题翻译： ASIC低功率活动检测器来改变阈值电压
公开(公告)号：US6097241A
公开(公告)日：2000-08-01
申请号：US159898
申请日：1998-09-24
申请人： Claude L. Bertin , Alvar A. Dean , Kenneth J. Goodnow , Wilbur D. Pricer , William R. Tonti
发明人： Claude L. Bertin , Alvar A. Dean , Kenneth J. Goodnow , Wilbur D. Pricer , William R. Tonti
IPC分类号： G06F1/32 , H03K3/01
CPC分类号： G06F1/3203 , G06F1/3296 , Y02B60/1285
摘要： An integrated circuit such as an ASIC device having partitioned functional units with independent threshold voltage control. A first partition is always operated in a normal mode, while subsequent partitions are maintained in a standby mode until a transition is detected at the input of the first partition. The subsequent partitions are switched to the normal mode by lowering the body voltage applied to the devices with each partition. A pulse stretcher is used to keep a partition in a normal mode for a predetermined period of time after the transition is detected.
摘要翻译：诸如具有独立阈值电压控制的具有分区功能单元的ASIC器件的集成电路。第一分区总是以正常模式操作，而后续分区保持在待机模式，直到在第一分区的输入处检测到转换。随后的分区通过降低施加到每个分区的设备的体电压而切换到正常模式。在检测到转换之后，使用脉冲展开器将分区保持在正常模式下预定的时间段。

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