公开(公告)号：US07778319B2

公开(公告)日：2010-08-17

申请号：US11266472

申请日：2005-11-04

申请人： Kiyotaka Ichiyama ,  Masahiro Ishida ,  Yasuhide Kuramochi ,  Takahiro Yamaguchi

发明人： Kiyotaka Ichiyama ,  Masahiro Ishida ,  Yasuhide Kuramochi ,  Takahiro Yamaguchi

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 having a first pulse generator 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, a second pulse generator 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 corresponding to timing of the detected boundaries of the data sections, a filter for removing carrier frequency components of said data-signal-under-measurement from first and second pulse signals 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： 提供了一种抖动测量装置，用于测量具有第一脉冲发生器的测量信号中的抖动，用于检测数据信号下测量的边沿，以输出具有预先对应于脉冲宽度设置的脉冲宽度的第一脉冲信号 边缘，第二脉冲发生器，用于检测在数据信号下测量中数据值不改变的数据段的边界，以输出具有预先设置的脉冲宽度的第二脉冲信号，该脉冲宽度对应于检测到的数据边界的定时 部分，用于从第一和第二脉冲信号中去除所述数据信号不足测量的载波频率分量的滤波器和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的抖动计算部分 。

公开(公告)号：US20070118314A1

公开(公告)日：2007-05-24

申请号：US11266471

申请日：2005-11-04

申请人： Kiyotaka Ichiyama ,  Masahiro Ishida ,  Yasuhide Kuramochi ,  Takahiro Yamaguchi

发明人： Kiyotaka Ichiyama ,  Masahiro Ishida ,  Yasuhide Kuramochi ,  Takahiro Yamaguchi

IPC分类号： G01R13/00

CPC分类号： G01R29/26 ,  G01R31/31709

摘要： There is provided a jitter measuring apparatus for measuring jitter in a signal-under-measurement, having a pulse generator for outputting a pulse signal having a pulse width set in advance corresponding to edges-under-measurement from which the timing jitter is to be measured in the signal-under-measurement, a filter for removing a carrier frequency components of the signal-under-measurement from the pulse signal and a jitter calculator for calculating the jitter in the signal-under-measurement based on the signal outputted out of the filter

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，其具有用于输出脉冲信号的脉冲发生器，该脉冲信号具有预先设置的脉冲宽度，该脉冲信号对应于要测量定时抖动的测量下边缘 在信号未测量中，用于从脉冲信号中去除测量信号的载波频率分量的滤波器和用于根据输出的信号中的信号计算在测量信号中的抖动的抖动计算器 过滤

公开(公告)号：US20070104260A1

公开(公告)日：2007-05-10

申请号：US11266472

申请日：2005-11-04

申请人： Kiyotaka Ichiyama ,  Masahiro Ishida ,  Yasuhide Kuramochi ,  Takahiro Yamaguchi

发明人： Kiyotaka Ichiyama ,  Masahiro Ishida ,  Yasuhide Kuramochi ,  Takahiro Yamaguchi

IPC分类号： H04B17/00

CPC分类号： G01R31/31709

摘要： There is provided a jitter measuring apparatus for measuring jitter in a signal-under-measurement having a first pulse generator 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, a second pulse generator 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 corresponding to timing of the detected boundaries of the data sections, a filter for removing carrier frequency components of said data-signal-under-measurement from first and second pulse signals 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： 提供了一种抖动测量装置，用于测量具有第一脉冲发生器的测量信号中的抖动，用于检测数据信号下测量的边沿，以输出具有预先对应于脉冲宽度设置的脉冲宽度的第一脉冲信号 边缘，第二脉冲发生器，用于检测在数据信号下测量中数据值不改变的数据段的边界，以输出具有预先设置的脉冲宽度的第二脉冲信号，该脉冲宽度对应于检测到的数据边界的定时 部分，用于从第一和第二脉冲信号中去除所述数据信号不足测量的载波频率分量的滤波器和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的抖动计算部分 。

公开(公告)号：US08068538B2

公开(公告)日：2011-11-29

申请号：US11266471

申请日：2005-11-04

申请人： Kiyotaka Ichiyama ,  Masahiro Ishida ,  Yasuhide Kuramochi ,  Takahiro Yamaguchi

发明人： Kiyotaka Ichiyama ,  Masahiro Ishida ,  Yasuhide Kuramochi ,  Takahiro Yamaguchi

IPC分类号： H04B3/46

CPC分类号： G01R29/26 ,  G01R31/31709

摘要： There is provided a jitter measuring apparatus for measuring jitter in a signal-under-measurement, having a pulse generator for outputting a pulse signal having a pulse width set in advance corresponding to edges-under-measurement from which the timing jitter is to be measured in the signal-under-measurement, a filter for removing carrier frequency components of the signal-under-measurement from the pulse signal and a jitter calculator for calculating the jitter in the signal-under-measurement based on the signal outputted out of the filter.

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，其具有用于输出脉冲信号的脉冲发生器，该脉冲信号具有预先设置的脉冲宽度，该脉冲信号对应于要测量定时抖动的测量下边缘 在信号不足测量中，用于从脉冲信号中去除测量信号的载波频率分量的滤波器和用于根据从滤波器输出的信号计算测量信号中的抖动的抖动计算器 。

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：US20080077342A1

公开(公告)日：2008-03-27

申请号：US11535279

申请日：2006-09-26

申请人： Kiyotaka ICHIYAMA ,  Masahiro Ishida ,  Takahiro Yamaguchi

发明人： Kiyotaka ICHIYAMA ,  Masahiro Ishida ,  Takahiro Yamaguchi

IPC分类号： G06F19/00 ,  G06F17/40

CPC分类号： G01R29/26 ,  G01R31/31709

摘要： There is provided a jitter measurement apparatus for measuring a jitter of a data signal having a substantially constant data rate. The jitter measurement apparatus includes therein a signal converting section that converts the data signal into a clock signal, where the clock signal retains timings of data transition edges of the data signal at which a data value of the data signal transits and has edges whose cycle is substantially equal to the data rate, an analytic signal generating section that converts the clock signal into an analytic signal of a complex number, and a jitter measuring section that measures the jitter of the data signal based on the analytic signal.

摘要翻译： 提供了一种用于测量具有基本上恒定的数据速率的数据信号的抖动的抖动测量装置。 抖动测量装置包括信号转换部分，其将数据信号转换成时钟信号，其中时钟信号保持数据信号的数据值的数据转换边沿的定时，数据信号的数据值在该周期为 基本上等于数据速率，将时钟信号转换为复数分析信号的分析信号生成部分，以及基于分析信号测量数据信号的抖动的抖动测量部分。

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：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：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。