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    • 2. 发明申请
    • ANALOG CIRCUIT TESTING AND TEST PATTERN GENERATION
    • 模拟电路测试和测试模式生成
    • US20100109676A1
    • 2010-05-06
    • US12594967
    • 2008-04-03
    • Amir ZjajoJose De Jesus Pineda De GyvezAlexander G. Gronthoud
    • Amir ZjajoJose De Jesus Pineda De GyvezAlexander G. Gronthoud
    • G01R31/02
    • G01R31/31813G01R31/316
    • Test vectors for structural testing of an analog circuit are selected by first selecting an initial set of test input vectors for the analog circuit. A set of faults is selected, comprising faults that each correspond to a respective node in the analog circuit and corresponding fault voltage value for that node. A measure of overlap is computed between probability distributions of test output signal values for the analog circuit in response to the test input vectors in the presence and absence of each of the faults from said set of faults respectively, as a function of estimated statistical spread of component and/or process parameter values in the analog circuit. Test input vectors are selected from the initial set of test input vectors for use in testing on the basis of whether the measure of overlap for at least one if the faults is below a threshold value in response to the selected test input vector under control of the test selection computer.
    • 通过首先选择模拟电路的初始测试输入向量集来选择模拟电路结构测试的测试向量。 选择一组故障,其中包括每个对应于模拟电路中的相应节点的故障以及该节点的对应的故障电压值。 在模拟电路的测试输出信号值的概率分布中,根据来自所述故障组的每个故障的存在和不存在的测试输入向量,分别计算重叠的度量,作为估计的统计扩展的函数 模拟电路中的组件和/或过程参数值。 从用于测试的初始测试输入向量组中选择测试输入向量,该测试输入向量基于如果故障低于阈值的至少一个的重叠测量是响应于所选择的测试输入向量在 测试选择电脑。
    • 5. 发明申请
    • Spatial transformer for RF and low current interconnect
    • RF和低电流互连的空间变压器
    • US20070268030A1
    • 2007-11-22
    • US11436821
    • 2006-05-18
    • William KnauerEric Saint-EtienneVincent Reynaud
    • William KnauerEric Saint-EtienneVincent Reynaud
    • G01R31/02
    • G01R31/2889G01R31/316
    • A spatial transformer includes an insulating substrate; a plurality of test terminal assemblies on the substrate; and a plurality of contact surfaces on the transformer, each providing an interconnection point for electrical connection between a respective test terminal assembly and a device under test. Each test terminal assembly has a center conductor trace on an upper substrate surface; a lower substrate guard trace beneath the center conductor trace; and a pair of upper substrate guard traces adjacent to opposite sides of the center conductor trace, the guard traces being electrically interconnected. The guard traces in combination with the center conductor trace provide a desired characteristic impedance for an RF signal applied therebetween or a guarded DC connection for a DC signal applied to the center conductor trace and a DC guard applied to the guard traces.
    • 空间变压器包括绝缘衬底; 在基板上的多个测试端子组件; 以及变压器上的多个接触表面,每个提供用于相应测试端子组件和被测器件之间的电连接的互连点。 每个测试端子组件在上基板表面上具有中心导体迹线; 在中心导体迹线下面的下基板保护迹线; 以及与中心导体迹线的相对侧相邻的一对上基板保护迹线,保护迹线电互连。 与中心导体迹线组合的保护迹线为施加在其间的RF信号提供期望的特性阻抗,或者对施加到中心导体迹线的DC信号的保护DC连接以及施加到保护迹线的DC保护。
    • 6. 发明申请
    • TRANSMITTER VOLTAGE AND RECEIVER TIME MARGINING
    • 发射器电压和接收器时间限制
    • US20070230513A1
    • 2007-10-04
    • US11668010
    • 2007-01-29
    • Gerald R. TalbotPaul C. MirandaEmerson S. FangRohit Kumar
    • Gerald R. TalbotPaul C. MirandaEmerson S. FangRohit Kumar
    • H04J3/06
    • G01R31/30G01R31/3004G01R31/316G01R31/317H04L1/20H04L7/0337
    • A technique for characterizing a communications interface includes determining a voltage margin and a timing margin of the interface based on data sampled by a sampling device of a receiver of the interface. In at least one embodiment of the invention, a method for determining margin associated with a receiver circuit of an integrated circuit includes periodically sampling a signal over a time period by a receiver sampling circuit of the receiver circuit to generate a sampled version of the signal. The method includes incrementally varying a value of the parameter associated with the signal. The varying of the parameter is through a range of values of the parameter over the time period. The method includes determining a margin value of the receiver circuit associated with the parameter based, at least in part, on the sampled version of the signal.
    • 用于表征通信接口的技术包括基于由接口的接收机的采样设备采样的数据来确定接口的电压余量和定时裕度。 在本发明的至少一个实施例中,用于确定与集成电路的接收机电路相关联的裕量的方法包括由接收机电路的接收机采样电路在一段时间周期性地对信号进行采样以产生信号的采样版本。 该方法包括递增地改变与信号相关联的参数的值。 参数的变化是通过该时间段内参数值的范围。 该方法包括至少部分地基于信号的采样版本来确定与参数相关联的接收机电路的边缘值。
    • 9. 发明申请
    • Analog circuit automatic calibration system
    • 模拟电路自动校准系统
    • US20050049809A1
    • 2005-03-03
    • US10915345
    • 2004-08-11
    • Shiro DoshoNaoshi YanagisawaMasaomi ToyamaKeijiro Umehara
    • Shiro DoshoNaoshi YanagisawaMasaomi ToyamaKeijiro Umehara
    • G01R31/316G01R35/00G06F19/00
    • G01R35/005G01R31/316
    • An analog circuit automatic calibration system for calibrating an object circuit that is an analog circuit having a characteristic changing with an input set value. The system includes: a set value storage section for storing a value and outputting the value to the object circuit as the set value; a characteristic detection section for detecting the characteristic of the object circuit; a first characteristic change section for determining the set value so that the characteristic of the object circuit is optimized; a second characteristic change section for updating the set value so that the characteristic of the object circuit is maintained, using an algorithm different from that used in the first characteristic change section; and a selector for selecting either one of the outputs of the first and second characteristic sections to enable the selected one to be stored in the set value storage section.
    • 一种模拟电路自动校准系统,用于校准作为具有随着输入设定值变化的特性的模拟电路的目标电路。 该系统包括:设定值存储部分,用于存储值并将该值输出到对象电路作为设定值; 用于检测所述目标电路的特性的特性检测部分; 用于确定所述设定值使得所述对象电路的特性被优化的第一特征变化部分; 第二特征变化部,使用与第一特征变化部中使用的算法不同的算法来更新设定值,使得保持对象电路的特性; 以及选择器,用于选择第一和第二特征部分的输出之一,以使所选择的一个存储在设定值存储部分中。