公开(公告)号：US20060268970A1

公开(公告)日：2006-11-30

申请号：US11137786

申请日：2005-05-25

申请人： Kiyotaka Ichiyama ,  Masahiro Ishida ,  Takahiro Yamaguchi ,  Mani Soma

发明人： Kiyotaka Ichiyama ,  Masahiro Ishida ,  Takahiro Yamaguchi ,  Mani Soma

IPC分类号： H04B3/46

CPC分类号： G01R31/31709

摘要： There is provided a jitter measuring apparatus for measuring jitter in a signal-under-measurement, including a pulse generating section having first pulse generating means for detecting edges of the data-signal-under-measurement to output a first pulse signal having a pulse width set in advance corresponding to the edge and second pulse generating means for detecting boundaries of data sections where data values do not change in the data-signal-under-measurement to output a second pulse signal having a pulse width set in advance over the edge timings of the boundaries of the detected data sections and a jitter calculating section for calculating timing jitter in the data-signal-under-measurement based on the first and second pulse signals.

公开(公告)号：US20060018418A1

公开(公告)日：2006-01-26

申请号：US10896751

申请日：2004-07-22

申请人： Kiyotaka Ichiyama ,  Masahiro Ishida ,  Takahiro Yamaguchi ,  Mani Soma

发明人： Kiyotaka Ichiyama ,  Masahiro Ishida ,  Takahiro Yamaguchi ,  Mani Soma

IPC分类号： H03D3/24

CPC分类号： G01R31/31709 ,  G01R29/26 ,  G01R31/3016 ,  G01R31/31725 ,  G01R31/3191 ,  G01R31/31937

摘要： A jitter measurement apparatus for measuring an intrinsic jitter of a circuit to be tested including a phase detector which outputs a signal according to a phase difference between a supplied first input signal and a supplied second input signal, includes: an input unit for supplying an identical signal to the phase detector as the first input signal and as the second input signal; and a jitter measurement unit for measuring the intrinsic jitter of the circuit to be tested by measuring a jitter of a signal which is generated in an inside of the circuit to be tested according to an signal output from the phase detector.

公开(公告)号：US20060182170A1

公开(公告)日：2006-08-17

申请号：US11378407

申请日：2006-03-17

申请人： Kiyotaka Ichiyama ,  Masahiro Ishida ,  Takahiro Yamaguchi ,  Mani Soma

发明人： Kiyotaka Ichiyama ,  Masahiro Ishida ,  Takahiro Yamaguchi ,  Mani Soma

IPC分类号： H04B17/00

CPC分类号： H04B17/364

摘要： A jitter measuring apparatus for measuring timing jitter of a signal-under-test is provided, wherein the jitter measuring apparatus includes a pulse generator for outputting a pulse signal of a predetermined pulse width for an edge of the signal-under-test, whose timing jitter is under test; and a jitter measuring sub-unit for extracting the timing jitter on the basis of a duty ratio of each cycle of the signal output by the pulse generator.

摘要翻译： 提供了一种用于测量待测信号的定时抖动的抖动测量装置，其中抖动测量装置包括脉冲发生器，用于输出针对被测信号的边缘的预定脉冲宽度的脉冲信号， 抖动被测试; 以及抖动测量子单元，用于基于由脉冲发生器输出的信号的每个周期的占空比来提取定时抖动。

公开(公告)号：US07957458B2

公开(公告)日：2011-06-07

申请号：US11378407

申请日：2006-03-17

申请人： Kiyotaka Ichiyama ,  Masahiro Ishida ,  Takahiro Yamaguchi ,  Mani Soma

发明人： Kiyotaka Ichiyama ,  Masahiro Ishida ,  Takahiro Yamaguchi ,  Mani Soma

IPC分类号： H04Q1/20

CPC分类号： H04B17/364

摘要： A jitter measuring apparatus measures timing jitter of a signal-under-test. The jitter measuring apparatus includes a pulse generator for outputting a pulse signal of a predetermined pulse width for an edge of the signal-under-test, and a jitter measuring sub-unit for extracting the timing jitter on the basis of a duty ratio of each cycle of the signal output by the pulse generator.

摘要翻译： 抖动测量装置测量待测信号的定时抖动。 抖动测量装置包括脉冲发生器，用于输出针对待测信号的边缘的预定脉冲宽度的脉冲信号，以及抖动测量子单元，用于根据每个的占空比提取定时抖动 由脉冲发生器输出的信号周期。

公开(公告)号：US07564897B2

公开(公告)日：2009-07-21

申请号：US10896751

申请日：2004-07-22

申请人： Kiyotaka Ichiyama ,  Masahiro Ishida ,  Takahiro Yamaguchi ,  Mani Soma

发明人： Kiyotaka Ichiyama ,  Masahiro Ishida ,  Takahiro Yamaguchi ,  Mani Soma

IPC分类号： H04B3/46

CPC分类号： G01R31/31709 ,  G01R29/26 ,  G01R31/3016 ,  G01R31/31725 ,  G01R31/3191 ,  G01R31/31937

摘要： A jitter measurement apparatus for measuring an intrinsic jitter of a circuit to be tested including a phase detector which outputs a signal according to a phase difference between a supplied first input signal and a supplied second input signal, includes: an input unit for supplying an identical signal to the phase detector as the first input signal and as the second input signal; and a jitter measurement unit for measuring the intrinsic jitter of the circuit to be tested by measuring a jitter of a signal which is generated in an inside of the circuit to be tested according to an signal output from the phase detector.

摘要翻译： 一种用于测量被测电路的固有抖动的抖动测量装置，包括：根据所提供的第一输入信号和所提供的第二输入信号之间的相位差输出信号的相位检测器，包括：输入单元，用于提供相同的 向相位检测器发信号作为第一输入信号，并作为第二输入信号; 以及抖动测量单元，用于根据从相位检测器输出的信号测量待测电路的内部产生的信号的抖动来测量待测电路的固有抖动。

公开(公告)号：US07496137B2

公开(公告)日：2009-02-24

申请号：US11137786

申请日：2005-05-25

申请人： Kiyotaka Ichiyama ,  Masahiro Ishida ,  Takahiro Yamaguchi ,  Mani Soma

发明人： Kiyotaka Ichiyama ,  Masahiro Ishida ,  Takahiro Yamaguchi ,  Mani Soma

IPC分类号： H04B3/46

CPC分类号： G01R31/31709

摘要： There is provided a jitter measuring apparatus for measuring jitter in a signal-under-measurement, including a pulse generating section having first pulse generating means for detecting edges of the data-signal-under-measurement to output a first pulse signal having a pulse width set in advance corresponding to the edge and second pulse generating means for detecting boundaries of data sections where data values do not change in the data-signal-under-measurement to output a second pulse signal having a pulse width set in advance over the edge timings of the boundaries of the detected data sections and a jitter calculating section for calculating timing jitter in the data-signal-under-measurement based on the first and second pulse signals.

摘要翻译： 提供了一种用于测量测量信号中的抖动的抖动测量装置，包括：脉冲发生部分，具有用于检测数据信号低于测量值的边缘的第一脉冲发生装置，以输出具有脉冲宽度的第一脉冲信号 对于边缘进行预先设定的第二脉冲发生装置，用于检测在数据信号不足测量中数据值不变化的数据部分的边界，以输出预先设定在边缘定时上的脉冲宽度的第二脉冲信号 检测数据部分的边界和抖动计算部分，用于基于第一和第二脉冲信号计算测量数据信号中的定时抖动。

公开(公告)号：US20060087346A1

公开(公告)日：2006-04-27

申请号：US10971716

申请日：2004-10-22

申请人： Masahiro Ishida ,  Kiyotaka Ichiyama ,  Takahiro Yamaguchi ,  Mani Soma

发明人： Masahiro Ishida ,  Kiyotaka Ichiyama ,  Takahiro Yamaguchi ,  Mani Soma

IPC分类号： H03D13/00

CPC分类号： H03D13/004 ,  H03L7/0891

摘要： There is provided a phase difference detecting apparatus operable to detect the phase difference between a first input signal and a second input signal. The phase detecting apparatus includes: a first divider operable to generate a first divided signal, which is the first input signal divided by two, so that all rising edges of the first input signal correspond to a rising edge and a falling edge of the first divided signal; a second divider operable to generate a second divided signal, which is the second input signal divided by two, so that the first divided signal corresponds to edges; a first phase detector operable to detect a phase difference between a rising edge of the first divided signal and an edge corresponding to the rising edge in the second divided signal; and a second phase detector operable to detect a phase difference between a falling edge of the first divided signal and an edge corresponding to the falling edge in the second divided signal.

摘要翻译： 提供了一种相位差检测装置，用于检测第一输入信号和第二输入信号之间的相位差。 相位检测装置包括：第一分频器，用于产生第一分频信号，第一分频信号是第二输入信号除以2，使得第一输入信号的所有上升沿对应于第一分频信号的上升沿和下降沿 信号; 第二分频器，用于产生第二分频信号，其是第二输入信号除以2，使得第一分频信号对应于边缘; 第一相位检测器，用于检测第一分频信号的上升沿和对应于第二分频信号中的上升沿的边沿之间的相位差; 以及第二相位检测器，其可操作以检测第一分频信号的下降沿和对应于第二分频信号中的下降沿的边沿之间的相位差。

公开(公告)号：US20100106468A1

公开(公告)日：2010-04-29

申请号：US12257395

申请日：2008-10-24

申请人： Takahiro Yamaguchi ,  Masahiro Ishida ,  Kiyotaka Ichiyama

发明人： Takahiro Yamaguchi ,  Masahiro Ishida ,  Kiyotaka Ichiyama

IPC分类号： G06F7/60 ,  G06F17/18

CPC分类号： G01R31/31919 ,  G01R29/26 ,  G01R31/2837 ,  G01R31/2894

摘要： There is provided a deterministic component model identifying apparatus for determining a type of a deterministic component contained in a probability density function supplied thereto. The deterministic component model identifying apparatus includes a spectrum calculating section that calculates a spectrum of the probability density function on an axis of a predetermined variable, a null value detecting section that detects a null value on the axis of the predetermined variable in the calculated spectrum, a theoretical value calculating section that calculates a theoretical value of a spectrum of the deterministic component in association with each of a plurality of predetermined deterministic component types, based on the null value detected by the null value detecting section, and a model determining section that determines, as the type of the deterministic component contained in the probability density function, a deterministic component type associated with a logarithmic magnitude spectrum difference most similar to a logarithmic magnitude spectrum of a Gaussian distribution, where the logarithmic magnitude spectrum difference is produced by subtracting the theoretical value of the spectrum of the deterministic component calculated in association with each of the plurality of predetermined deterministic component types from the spectrum calculated by the spectrum calculating section.

摘要翻译： 提供了一种用于确定包含在提供给它的概率密度函数中的确定性分量的类型的确定性分量模型识别装置。 确定性分量模型识别装置包括频谱计算部分，其计算预定变量的轴上的概率密度函数的频谱;空值检测部分，其检测所计算的频谱中的预定变量的轴上的零值; 理论值计算部，基于由空值检测部检测出的空值，与多个预定确定部分类型中的每一个相关联地计算确定性分量的频谱的理论值;以及模型确定部，其确定 ，作为包含在概率密度函数中的确定性分量的类型，与与高斯分布的对数幅度谱最相似的对数幅度谱差相关的确定性分量类型，其中通过减去理论产生对数幅度谱差 根据由频谱计算部分计算的频谱，与多个预定确定性分量类型中的每一个相关联地计算出的确定性分量的频谱的等级值。

公开(公告)号：US08000931B2

公开(公告)日：2011-08-16

申请号：US12256478

申请日：2008-10-23

申请人： Kiyotaka Ichiyama ,  Masahiro Ishida ,  Takahiro Yamaguchi

发明人： Kiyotaka Ichiyama ,  Masahiro Ishida ,  Takahiro Yamaguchi

IPC分类号： G06F17/18

CPC分类号： H04L1/20

摘要： Provided is a deterministic component model determining apparatus that determines a type of a deterministic component included in a probability density function supplied thereto, comprising a standard deviation calculating section that calculates a standard deviation of the probability density function; a spectrum calculating section that calculates a spectrum of the probability density function; a null frequency detecting section that detects a null frequency of the spectrum; a theoretical value calculating section that calculates a theoretical value of a spectrum for each of a plurality of predetermined types of deterministic components, based on the null frequency; a measured value calculating section that calculates a measured value of the spectrum for the deterministic component included in the probability density function, based on the standard deviation and the spectrum; and a model determining section that determines the type of the deterministic component included in the probability density function to be the type of deterministic component corresponding to a theoretical value closest to the measured value, from among the theoretical values for the plurality of types of deterministic components.

摘要翻译： 提供一种确定性分量模型确定装置，其确定包括在提供给其的概率密度函数中的确定性分量的类型，包括：计算概率密度函数的标准偏差的标准偏差计算部分; 频谱计算部分，其计算概率密度函数的频谱; 空频检测部，检测频谱的零频率; 理论值计算部，其基于所述零频率来计算多个预定类型的确定性分量中的每一个的频谱的理论值; 测量值计算部分，其基于标准偏差和光谱计算包括在概率密度函数中的确定性分量的光谱的测量值; 以及模型确定部分，从多个类型的确定性分量的理论值中，确定包括在概率密度函数中的确定性分量的类型，作为与最接近测量值的理论值相对应的确定性分量的类型 。

公开(公告)号：US07917331B2

公开(公告)日：2011-03-29

申请号：US12272810

申请日：2008-11-18

申请人： Kiyotaka Ichiyama ,  Masahiro Ishida ,  Takahiro Yamaguchi

发明人： Kiyotaka Ichiyama ,  Masahiro Ishida ,  Takahiro Yamaguchi

IPC分类号： G06F17/17 ,  G06F17/00

CPC分类号： G01R29/26

摘要： A deterministic component identifying apparatus identifies a distribution shape of a deterministic component included in a probability density function supplied thereto. The apparatus includes a standard deviation calculating section that calculates a standard deviation of the probability density function, a spectrum calculating section that calculates a spectrum of the probability density function, a null frequency detecting section that detects a null frequency of the spectrum, and a ratio calculating section that calculates a ratio between a top portion and a bottom portion of a distribution of the deterministic component, based on the standard deviation of the probability density function and the null frequency of the spectrum.

摘要翻译： 确定性分量识别装置识别包含在提供给它的概率密度函数中的确定性分量的分布形状。 该装置包括计算概率密度函数的标准偏差的标准偏差计算部分，计算概率密度函数的频谱的频谱计算部分，检测频谱的零频率的零频率检测部分， 计算部分，其基于概率密度函数的标准偏差和频谱的零频率来计算确定性分量的分布的顶部和底部之间的比率。