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    • 2. 发明授权
    • Systems and methods of efficient library characterization for integrated circuit cell libraries
    • 用于集成电路单元库的有效库表征的系统和方法
    • US08160858B2
    • 2012-04-17
    • US12970912
    • 2010-12-16
    • Ken TsengKevin Chou
    • Ken TsengKevin Chou
    • G06F17/50
    • G06F17/5036
    • A method of efficient library characterization of a circuit of a logic gate having a plurality of transistors and a plurality of nodes defining interconnection points in the circuit is disclosed. The method includes determining a plurality of vectors for a plurality of arcs. Each of the plurality of vectors represents possible data bits to inputs and nodes of the logic gate. The method performs circuit pruning for each of distinct vectors. The circuit pruning includes identifying an active circuit for each vector. Then, the circuit simulations limited to a plurality of transistors in the active circuit are performed. The circuit pruning and circuit simulations are repeated for remaining ones of the plurality of substantially distinct vectors. The results of the circuit simulations are then stored on a non-volatile compute readable media, for each active circuit corresponding to each of the plurality of substantially distinct vectors.
    • 公开了一种具有多个晶体管的逻辑门电路的有效库表征方法,以及定义电路中互连点的多个节点。 该方法包括确定多个弧的多个向量。 多个向量中的每一个向逻辑门的输入和节点表示可能的数据位。 该方法为每个不同的向量执行电路修剪。 电路修剪包括识别每个矢量的有源电路。 然后,执行限于有源电路中的多个晶体管的电路模拟。 对于多个基本不同的矢量中的剩余的重复电路修剪和电路模拟。 然后将电路模拟的结果存储在非易失性计算可读介质上,对应于多个基本上不同的向量中的每一个的每个有效电路。
    • 3. 发明申请
    • Systems and Methods of Efficient Library Characterization for Integrated Circuit Cell Libraries
    • 集成电路单元库高效库表征的系统与方法
    • US20110087478A1
    • 2011-04-14
    • US12970912
    • 2010-12-16
    • Ken TsengKevin Chou
    • Ken TsengKevin Chou
    • G06F17/50
    • G06F17/5036
    • A method of efficient library characterization of a circuit of a logic gate having a plurality of transistors and a plurality of nodes defining interconnection points in the circuit is disclosed. The method includes determining a plurality of vectors for a plurality of arcs. Each of the plurality of vectors represents possible data bits to inputs and nodes of the logic gate. The method selects a plurality of substantially distinct vectors from the plurality of vectors for each of the plurality of arcs, and performs circuit pruning for each of the plurality of substantially distinct vectors, taking each one substantially distinct vector at a time. The circuit pruning includes identifying an active circuit for each vector. The active circuit is identified by determining which circuit features are activated when applying a particular one of the substantially distinct vectors. Then, the circuit simulations limited to a plurality of transistors in the active circuit are performed. The circuit pruning and circuit simulations are repeated for remaining ones of the plurality of substantially distinct vectors. The results of the circuit simulations are then stored on a non-volatile compute readable media, for each active circuit corresponding to each of the plurality of substantially distinct vectors.
    • 公开了一种具有多个晶体管的逻辑门电路的有效库表征方法,以及定义电路中互连点的多个节点。 该方法包括确定多个弧的多个向量。 多个向量中的每一个向逻辑门的输入和节点表示可能的数据位。 该方法从多个矢量中选择多个基本上不同的矢量,并且对于多个基本上不同的矢量中的每一个,对于每一个基本上不同的矢量,每次对每一个基本上不同的向量进行电路剪枝。 电路修剪包括识别每个矢量的有源电路。 通过确定在应用基本上不同的矢量中的特定的一个时激活哪些电路特征来识别有源电路。 然后,执行限于有源电路中的多个晶体管的电路模拟。 对于多个基本不同的矢量中的剩余的重复电路修剪和电路模拟。 然后将电路模拟的结果存储在非易失性计算可读介质上,对应于多个基本上不同的向量中的每一个的每个有效电路。
    • 4. 发明授权
    • System and method for merging and separating attributes of consoles
    • 用于合并和分离控制台属性的系统和方法
    • US5491819A
    • 1996-02-13
    • US368767
    • 1995-01-04
    • Peter A. FatzingerMartin K. LeungKevin ChouSockalingan Radhakrishnan
    • Peter A. FatzingerMartin K. LeungKevin ChouSockalingan Radhakrishnan
    • G06F11/14G06F17/30
    • G06F9/466Y10S707/99938
    • A system and method for performing merge transactions and non-failure rollback transactions between data structures without logging. The system comprises data structure objects (or consoles) comprising means for storing original attributes that define that object, means for storing apparent attributes merged into that object from the other object, means for storing a switch-to pointer, and means for storing a switch-chain pointer. The system may further comprise merging means for processing merge transactions, including means for switching the switch-to pointer of the second object to point to the first object, means for switching the switch-chain pointer of the first object to point to the second object to thereby form a switch chain, and means for logically ORing the apparent attributes of the first and second objects to thereby render the second object idle and permit the first object to control the attributes of the second object. The system may also include rollback means for rolling back a merge transaction, including means for removing the second object from the switch-chain, and means for logically ANDing the original attributes of the first object with the apparent attributes of the first object and storing the resulting group of attributes as new apparent attributes for the first object. Pluralities of objects may be merged into a single object as well.
    • 用于在不进行日志记录的情况下在数据结构之间执行合并事务和非故障回滚事务的系统和方法。 该系统包括数据结构对象(或控制台),包括用于存储定义该对象的原始属性的装置,用于存储从另一对象合并到该对象中的明显属性的装置,用于存储切换指针的装置,以及用于存储交换机的装置 链指针。 该系统还可以包括用于处理合并事务的合并装置,包括用于切换第二对象的切换到指针以指向第一对象的装置,用于切换第一对象的交换链指针以指向第二对象的装置 从而形成开关链,以及用于逻辑地对第一和第二对象的表观属性进行逻辑或运算的装置,从而使第二对象空闲,并允许第一对象控制第二对象的属性。 该系统还可以包括用于回滚合并事务的回滚装置,包括用于从交换机链中移除第二对象的装置,以及用于逻辑地将第一对象的原始属性与第一对象的明显属性进行逻辑与操作的装置, 生成的属性组作为第一个对象的新的明显属性。 多个对象也可以合并成一个对象。
    • 6. 发明授权
    • Computer program product and program storage device for merging and
separating attributes of consoles
    • 用于合并和分离控制台属性的计算机程序产品和程序存储设备
    • US5628006A
    • 1997-05-06
    • US488028
    • 1995-06-07
    • Peter A. FatzingerMartin K. LeungKevin ChouSockallingam Radhakrishnan
    • Peter A. FatzingerMartin K. LeungKevin ChouSockallingam Radhakrishnan
    • G06F11/14G06F17/30
    • G06F17/30368G06F17/30371Y10S707/99932Y10S707/99953
    • A program storage device and computer program product for performing merge transactions and non-failure rollback transactions between data structures without logging. The device and product comprise data structures objects (or consoles) comprising means for storing original attributes that define that object, means for storing apparent attributes merged into that object from the other object, means for storing a switch-to pointer, and means for storing a switch-chain pointer. The device and product may further comprise merging means for processing merge transactions, including means for switching the switch-to pointer of the second object to point to the first object, means for switching the switch-chain pointer of the first object to point to the second object to thereby form a switch chain, and means for logically ORing the apparent attributes of the first and second objects to thereby render the second object idle and permit the first object to control the attributes of the second object. The device and product may also include rollback means for rolling back a merge transaction, including means for removing the second object from the switch-chain, and means for logically ANDing the original attributes of the first object with the apparent attributes of the first object and storing the resulting group of attributes as new apparent attributes for the first object. Pluralities of objects may be merged into a single object as well.
    • 用于在没有记录的情况下在数据结构之间执行合并事务和非故障回滚事务的程序存储设备和计算机程序产品。 设备和产品包括数据结构对象(或控制台),包括用于存储定义该对象的原始属性的装置,用于存储从另一个对象合并到该对象中的明显属性的装置,用于存储切换指针的装置,以及用于存储的装置 一个开关链指针。 所述设备和产品还可以包括用于处理合并事务的合并装置,包括用于切换第二对象的切换到指针以指向第一对象的装置,用于将第一对象的交换链指针切换到指向第 第二对象,从而形成开关链,以及用于逻辑地对第一和第二对象的表观属性进行OR运算的装置,从而使第二对象空闲,并允许第一对象控制第二对象的属性。 设备和产品还可以包括用于回滚合并事务的回滚装置,包括用于从交换机链中移除第二对象的装置,以及用于逻辑地将第一对象的原始属性与第一对象的明显属性进行逻辑“ 将所生成的属性组存储为第一对象的新的明显属性。 多个对象也可以合并成一个对象。
    • 7. 发明授权
    • Systems and methods of efficient library characterization for integrated circuit cell libraries
    • 用于集成电路单元库的有效库表征的系统和方法
    • US07937256B2
    • 2011-05-03
    • US11943529
    • 2007-11-20
    • Ken TsengKevin Chou
    • Ken TsengKevin Chou
    • G06F17/50
    • G06F17/5036
    • A method of efficient library characterization of a circuit of a logic gate having a plurality of transistors and a plurality of nodes defining interconnection points in the circuit is disclosed. The method includes determining a plurality of vectors for a plurality of arcs. Each of the plurality of vectors represents possible data bits to inputs and nodes of the logic gate. The method selects a plurality of substantially distinct vectors from the plurality of vectors for each of the plurality of arcs, and performs circuit pruning for each of the plurality of substantially distinct vectors, taking each one substantially distinct vector at a time. The circuit pruning includes identifying an active circuit for each vector. The active circuit is identified by determining which circuit features are activated when applying a particular one of the substantially distinct vectors. Then, the circuit simulations limited to a plurality of transistors in the active circuit are performed. The circuit pruning and circuit simulations are repeated for remaining ones of the plurality of substantially distinct vectors. The results of the circuit simulations are then stored on a non-volatile compute readable media, for each active circuit corresponding to each of the plurality of substantially distinct vectors.
    • 公开了一种具有多个晶体管的逻辑门电路的有效库表征方法,以及定义电路中互连点的多个节点。 该方法包括确定多个弧的多个向量。 多个向量中的每一个向逻辑门的输入和节点表示可能的数据位。 该方法从多个矢量中选择多个基本上不同的矢量,并且对于多个基本上不同的矢量中的每一个,对于每一个基本上不同的矢量,每次对每一个基本上不同的向量进行电路剪枝。 电路修剪包括识别每个矢量的有源电路。 通过确定在应用基本上不同的矢量中的特定的一个时激活哪些电路特征来识别有源电路。 然后,执行限于有源电路中的多个晶体管的电路模拟。 对于多个基本不同的矢量中的剩余的重复电路修剪和电路模拟。 然后将电路模拟的结果存储在非易失性计算可读介质上,对应于多个基本上不同的向量中的每一个的每个有效电路。
    • 8. 发明申请
    • Systems and Methods of Efficient Library Characterization for Integrated Circuit Cell Libraries
    • 集成电路单元库高效库表征的系统与方法
    • US20080133202A1
    • 2008-06-05
    • US11943529
    • 2007-11-20
    • Ken TsengKevin Chou
    • Ken TsengKevin Chou
    • G06F17/50
    • G06F17/5036
    • A method of efficient library characterization of a circuit of a logic gate having a plurality of transistors and a plurality of nodes defining interconnection points in the circuit is disclosed. The method includes determining a plurality of vectors for a plurality of arcs. Each of the plurality of vectors represents possible data bits to inputs and nodes of the logic gate. The method selects a plurality of substantially distinct vectors from the plurality of vectors for each of the plurality of arcs, and performs circuit pruning for each of the plurality of substantially distinct vectors, taking each one substantially distinct vector at a time. The circuit pruning includes identifying an active circuit for each vector. The active circuit is identified by determining which circuit features are activated when applying a particular one of the substantially distinct vectors. Then, the circuit simulations limited to a plurality of transistors in the active circuit are performed. The circuit pruning and circuit simulations are repeated for remaining ones of the plurality of substantially distinct vectors. The results of the circuit simulations are then stored on a non-volatile compute readable media, for each active circuit corresponding to each of the plurality of substantially distinct vectors.
    • 公开了一种具有多个晶体管的逻辑门电路的有效库表征方法,以及定义电路中互连点的多个节点。 该方法包括确定多个弧的多个向量。 多个向量中的每一个向逻辑门的输入和节点表示可能的数据位。 该方法从多个矢量中选择多个基本上不同的矢量,并且对于多个基本上不同的矢量中的每一个,对于每一个基本上不同的矢量,每次对每一个基本上不同的向量进行电路剪枝。 电路修剪包括识别每个矢量的有源电路。 通过确定在应用基本上不同的矢量中的特定的一个时激活哪些电路特征来识别有源电路。 然后,执行限于有源电路中的多个晶体管的电路模拟。 对于多个基本不同的矢量中的剩余的重复电路修剪和电路模拟。 然后将电路模拟的结果存储在非易失性计算可读介质上,对应于多个基本上不同的向量中的每一个的每个有效电路。
    • 9. 发明申请
    • Radiator fan shroud with flow directing ports
    • 带导流口的散热器风扇罩
    • US20060272800A1
    • 2006-12-07
    • US11144387
    • 2005-06-02
    • Alec WongDan FarmerBrian CampbellAdam HaileyKevin ChouTim Schick
    • Alec WongDan FarmerBrian CampbellAdam HaileyKevin ChouTim Schick
    • B29C47/88
    • F01P11/10F01P5/06F01P2001/005F01P2070/50
    • A radiator fan shroud (100) is disclosed that is adapted to be attached to a vehicle radiator (96)—for example, the radiator of a Class 8 truck. The fan shroud includes a peripheral cover portion (112) and a ring assembly (102) that encloses the blades of the engine-driven radiator fan (88). The ring assembly may be formed integrally with the peripheral cover portion or may include a separable ring extension (120). The ring assembly includes a plurality of ports (104) defined by vanes (106) at the rearward portion of the ring assembly. The ports are selectively positioned to manage the airflow in the engine compartment, directing the airflow towards selected locations. The vanes may be fluted. The fan shroud may be formed from two or more pieces that cooperatively form the fan shroud, to facilitate installation and maintenance of the fan shroud.
    • 公开了一种适于附接到车辆散热器(96)的散热器风扇护罩(100),例如第8类卡车的散热器。 风扇罩包括围绕发动机驱动的散热器风扇(88)的叶片的周边盖部分(112)和环形组件(102)。 环组件可以与周边盖部分一体地形成,或者可以包括可分离环延伸部(120)。 环组件包括在环组件的后部处由叶片(106)限定的多个端口(104)。 这些端口被选择性地定位以管理发动机室中的气流,将气流引向选定的位置。 叶片可以是槽纹的。 风扇罩可以由协同形成风扇罩的两个或更多个部件形成,以便于风扇罩的安装和维护。