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    • 4. 发明授权
    • On-chip electromigration monitoring
    • 片上电迁移监测
    • US07719302B2
    • 2010-05-18
    • US12215732
    • 2008-06-30
    • Louis L. HsuHayden C. Cranford, Jr.Oleg GluschenkovJames S. MasonMichael A. SornaChih-Chao Yang
    • Louis L. HsuHayden C. Cranford, Jr.Oleg GluschenkovJames S. MasonMichael A. SornaChih-Chao Yang
    • G01R31/02
    • G01R31/2858G01R31/2884G01R31/318533
    • A method is provided for monitoring interconnect resistance within a semiconductor chip assembly, A semiconductor chip assembly can include a semiconductor chip having contacts exposed at a surface of the semiconductor chip and a substrate having exposed terminals in conductive communication with the contacts. A plurality of monitored elements of the semiconductor chip can include conductive interconnects, each interconnecting a respective pair of nodes of the semiconductor chip through wiring within the semiconductor chip. In an example of such method, a voltage drop across each monitored element is compared with a reference voltage drop across a respective reference element on the semiconductor chip at a plurality of different times during a lifetime of the semiconductor chip assembly. In that way, it can be detected when a resistance of such monitored element is over threshold. Based on a result of such comparison, a decision can be made whether to indicate an action condition.
    • 提供了一种用于监测半导体芯片组件内的互连电阻的方法。半导体芯片组件可以包括具有在半导体芯片的表面处露出的触点的半导体芯片和具有与触点导电连通的露出端子的基板。 半导体芯片的多个受监测元件可以包括导电互连,每个导体互连通过半导体芯片内的布线互连半导体芯片的相应的一对节点。 在这种方法的示例中,在半导体芯片组件的寿命期间,跨越每个被监测元件的电压降与在半导体芯片上的相应参考元件上的参考电压降在多个不同时间进行比较。 以这种方式,当这种被监视的元件的电阻超过阈值时,可以检测它。 基于这种比较的结果,可以做出是否指示动作条件的决定。
    • 6. 发明授权
    • On-chip electromigration monitoring system
    • 片上电迁移监控系统
    • US07394273B2
    • 2008-07-01
    • US11306985
    • 2006-01-18
    • Louis L. HsuHayden C. Cranford, Jr.Oleg GluschenkovJames S. MasonMichael A. SornaChih-Chao Yang
    • Louis L. HsuHayden C. Cranford, Jr.Oleg GluschenkovJames S. MasonMichael A. SornaChih-Chao Yang
    • G01R31/02
    • G01R31/2858G01R31/2884G01R31/318533
    • A packaged semiconductor chip is provided which includes a semiconductor chip and a package element. The semiconductor chip includes a plurality of semiconductor devices and a plurality of conductive features disposed at an exterior face of the semiconductor chip. The package element has a plurality of external features conductively connected to the plurality of conductive features of the semiconductor chip. The semiconductor chip includes a monitored element including a conductive interconnect that conductively interconnects a first node of the semiconductor chip to a second node of the semiconductor chip. A detection circuit in the semiconductor chip is operable to compare a variable voltage drop across the monitored element with a reference voltage drop across a reference element on the chip at a plurality of different times during a lifetime of the packaged semiconductor chip so as to detect when the resistance of the monitored element is over threshold.
    • 提供一种封装的半导体芯片,其包括半导体芯片和封装元件。 半导体芯片包括多个半导体器件和设置在半导体芯片的外表面处的多个导电特征。 封装元件具有导电连接到半导体芯片的多个导电特征的多个外部特征。 半导体芯片包括被监视的元件,该元件包括将半导体芯片的第一节点与半导体芯片的第二节点导电互连的导电互连。 半导体芯片中的检测电路可操作以在封装的半导体芯片的寿命期间的多个不同时间将所监视的元件上的可变电压降与芯片上的参考元件上的参考电压降进行比较,以便检测何时 被监测元件的电阻超过阈值。
    • 7. 发明授权
    • One-sample-per-bit decision feedback equalizer (DFE) clock and data recovery
    • 单采样每位决策反馈均衡器(DFE)时钟和数据恢复
    • US07809054B2
    • 2010-10-05
    • US11405997
    • 2006-04-18
    • Juan A. CarballoHayden C. Cranford, Jr.Gareth J. NichollsVernon R. NormanMartin L. Schmatz
    • Juan A. CarballoHayden C. Cranford, Jr.Gareth J. NichollsVernon R. NormanMartin L. Schmatz
    • H03H7/30H03H7/40H03K5/159
    • H04L25/03063
    • Disclosed are a receiver circuit, method and design architecture of a decision feedback equalizer (DFE) Clock-And-Data Recovery (CDR) architecture that utilizes/produces one sample-per-bit in the receiver and reduces bit-error-rate (BER). An integrating receiver is combined with a decision feedback equalizer along with the appropriate (CDR) loop phase detector to maintain a single sample per bit requirement. The incoming voltage is converted to a current and connected to a current summing node. Weighted currents determined by the values of previously detected bits and their respective feedback coefficients are also connected to this node. Additionally, the summed currents is integrated and converted to a voltage. A sampler is utilized to make a bit decision based on the resulting voltage. After sampling, the integrator is reset before analysis of the next bit. The necessary amplification is achieved by maximizing the sensitivity of the latch, using integration in front of the data latch.
    • 公开了一种在接收机中利用/产生一个每位采样的判决反馈均衡器(DFE)时钟和数据恢复(CDR)架构的接收器电路,方法和设计架构,并且降低了误码率(BER )。 集成接收机与决策反馈均衡器以及适当的(CDR)环路相位检测器相结合,以保持每位需求的单个采样。 输入电压被转换为电流并连接到电流求和节点。 由先前检测到的位及其各自的反馈系数的值确定的加权电流也连接到该节点。 另外,总和电流被积分并转换成电压。 采样器用于基于所得到的电压进行位决定。 采样后,积分器在分析下一位之前被复位。 通过使用在数据锁存器前面的积分来最大化锁存器的灵敏度来实现必要的放大。
    • 9. 发明授权
    • Method for on-chip diagnostic testing and checking of receiver margins
    • 用于片上诊断测试和接收器边距检查的方法
    • US07721134B2
    • 2010-05-18
    • US11566576
    • 2006-12-04
    • Hayden C. Cranford, Jr.Daniel J. FriedmanMounir MeghelliThomas H. Toifl
    • Hayden C. Cranford, Jr.Daniel J. FriedmanMounir MeghelliThomas H. Toifl
    • H04L25/00H03D3/24
    • G01R31/3171B82Y25/00G01R33/093
    • A method and system for determining the eye pattern margin parameters of a receiver system during diagnostic testing is presented. The circuitry in the receiver's front end comprises a series of latches, XOR gates and OR gates which first provide the data samples and edge samples, i.e., data sampled at the rising or falling edge of an (edge) clock characterized by a phase delay relative to the data sampling clock. The receiver also comprises optimization circuitry for the ideal alignment of the edge clock (edges) with the data edges. The method further provides for a phase shifting of the edge clock to the left and right from the ideal/locked position to screen the data eye pattern in order to compute the Bit Error Rate (BER) value. The position of the edge clock relative to the data sampling clock determines the horizontal eye opening for the computed BER.
    • 提出了一种用于在诊断测试期间确定接收机系统的眼图边缘参数的方法和系统。 接收机前端的电路包括一系列锁存器,XOR门和OR门,它们首先提供数据样本和边缘采样,即在(边沿)时钟的上升沿或下降沿采样的数据,其特征在于相位延迟相对 到数据采样时钟。 接收机还包括用于边缘时钟(边缘)与数据边缘的理想对准的优化电路。 该方法还提供了边缘时钟从理想/锁定位置向左和向右移相以屏蔽数据眼图,以便计算误码率(BER)值。 边缘时钟相对于数据采样时钟的位置决定了计算的BER的水平眼睛开度。
    • 10. 发明授权
    • Generating an eye diagram of integrated circuit transmitted signals
    • 生成集成电路传输信号的眼图
    • US07684478B2
    • 2010-03-23
    • US11427831
    • 2006-06-30
    • Hayden C. Cranford, Jr.Fadi H. GebaraJeremy D. Schaub
    • Hayden C. Cranford, Jr.Fadi H. GebaraJeremy D. Schaub
    • H04B17/00H04L27/06
    • G01R31/31711H04L1/205H04L1/24
    • A sequence of K voltage samples of a transmitted data signal is generated by sampling, digitizing, and storing voltage samples of the data signal with an imbedded sample clock on an IC having an unknown period TS. The K voltage samples are plotted against a time base of K sequential times TB[K] normalized so all samples fall within one cycle of the data clock used to generate the data signal or a unit time of 1. The time base is generated by estimating the sample clock period TSE to be some multiple of 1/P where P is greater than K. Eye diagrams are analyzed for time jitter wherein only the minimum value of jitter is saved. TSE is incremented by 1/P until TS is greater than one half the data clock period. The eye diagram at the TSE with the minimum time jitter is used to analyze the data channels.
    • 通过在具有未知周期TS的IC上以嵌入的采样时钟采样,数字化和存储数据信号的电压采样来生成发送数据信号的K个电压样本的序列。 K电压样本相对于K次顺序TB [K]的时基绘制,归一化,所以所有采样都落在用于生成数据信号的数据时钟或单位时间为1的一个周期内。时基是通过估计 采样时钟周期TSE为1 / P的某个倍数,其中P大于K.眼图分析时间抖动,其中只保存抖动的最小值。 TSE递增1 / P,直到TS大于数据时钟周期的一半。 TSE具有最小时间抖动的眼图用于分析数据通道。