公开(公告)号：US07904776B2

公开(公告)日：2011-03-08

申请号：US12022163

申请日：2008-01-30

申请人： Kiyotaka Ichiyama ,  Masahiro Ishida

发明人： Kiyotaka Ichiyama ,  Masahiro Ishida

IPC分类号： G01R31/3183 ,  G01R31/40

CPC分类号： G01R31/31709 ,  G06F7/588 ,  H03K3/84 ,  H03K5/156

摘要： Provided is a jitter injection circuit that generates a jittery signal including jitter, including a plurality of delay circuits that are connected in a cascading manner and that each sequentially delay a supplied reference signal by a preset delay amount and a signal generating section that generates each edge of the jittery signal according to a timing of the signal output by each delay circuit. In the jitter injection circuit the delay amount of at least one delay circuit is set to be a value different from an integer multiple of an average period of the jittery signal.

摘要翻译： 提供了一种抖动注入电路，其产生包括抖动的抖动信号，包括以级联方式连接的多个延迟电路，并且每个延迟电路依次将所提供的参考信号延迟预设的延迟量，以及产生每个边沿的信号产生部分 根据由每个延迟电路输出的信号的定时的抖动信号。 在抖动注入电路中，将至少一个延迟电路的延迟量设定为与抖动信号的平均周期的整数倍不同的值。

公开(公告)号：US07903776B2

公开(公告)日：2011-03-08

申请号：US12414618

申请日：2009-03-30

申请人： Masahiro Ishida ,  Kiyotaka Ichiyama ,  Takahiro Yamaguchi

发明人： Masahiro Ishida ,  Kiyotaka Ichiyama ,  Takahiro Yamaguchi

IPC分类号： H04L7/00 ,  H04L25/00 ,  H04L25/40

CPC分类号： G01R31/31709

摘要： A jitter measurement apparatus that measures timing jitter of a signal under measurement having a prescribed repeating pattern includes a sampling section that coherently samples the signal under measurement within a prescribed measurement duration; a waveform reconfiguring section that rearranges ordinal ranks of data values sampled by the sampling section to generate a reconfigured waveform that is a reproduction of a waveform of the signal under measurement; an analytic signal generating section that converts the reconfigured waveform into a complex analytic signal; and a jitter measuring section that measures jitter of the signal under measurement based on the analytic signal.

摘要翻译： 测量具有规定的重复图案的测量信号的定时抖动的抖动测量装置包括在规定的测量持续时间内对被测信号进行相干采样的采样部分; 波形重新配置部分，重新​​排列由采样部分采样的数据值的等级，以产生作为测量信号的波形的再现的重新配置的波形; 分析信号生成部，其将重新配置的波形转换为复数分析信号; 以及基于分析信号测量被测信号的抖动的抖动测量部。

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：US20100185407A1

公开(公告)日：2010-07-22

申请号：US12355799

申请日：2009-01-18

申请人： Kiyotaka Ichiyama ,  Masahiro Ishida ,  Takahiro Yamaguchi

发明人： Kiyotaka Ichiyama ,  Masahiro Ishida ,  Takahiro Yamaguchi

IPC分类号： G06F17/18 ,  G01R29/26 ,  G06F19/00

CPC分类号： G01R31/31709

摘要： Provided is an evaluation apparatus that evaluates a characteristic of a propagation apparatus propagating a signal, comprising an output signal measuring section that measures a probability density function expressing a probability density distribution of jitter of an output signal passed by the propagation apparatus; an isolating section that isolates at least one of a random component of a jitter component and a deterministic component of the jitter component in the jitter of the output signal, from the probability density function of the jitter of the output signal; and an evaluating section that evaluates the characteristic of the propagation apparatus based on the jitter component isolated by the isolating section.

摘要翻译： 提供一种评价装置，其评价传播信号的传播装置的特性，包括：测量表示传播装置通过的输出信号的抖动的概率密度分布的概率密度函数的概率密度函数的输出信号测量部; 隔离部分，根据输出信号的抖动的概率密度函数，将抖动分量的随机分量和抖动分量的确定分量中的至少一个与输出信号的抖动相隔离; 以及评估部，其基于由所述隔离部隔离的抖动成分来评价所述传播装置的特性。

公开(公告)号：US20090281751A1

公开(公告)日：2009-11-12

申请号：US12116970

申请日：2008-05-08

申请人： Masahiro Ishida ,  Kiyotaka Ichiyama

发明人： Masahiro Ishida ,  Kiyotaka Ichiyama

IPC分类号： G06F17/00

CPC分类号： G01R31/31709

摘要： Provided is a jitter measurement apparatus, including a sampling section that samples a signal under measurement having a cycle T, a waveform reconfiguring section that shapes a reconfigured waveform having the cycle T by rearranging ordinal ranks of sample values sampled by the sampling section, a distribution generating section that generates a timing distribution of edges in the reconfigured waveform, and a statistical value calculating section that calculates a statistical value of the timing distribution. The sampling section may sample the signal under measurement having the cycle T a certain number of times N while the signal under measurement repeats for M cycles, where M and N are coprime.

摘要翻译： 提供了一种抖动测量装置，包括：对具有周期T的测量信号进行采样的采样部分;波形重构部分，通过重新排列由采样部分采样的样本值的序列，对具有周期T的重构波形进行整形;分布 生成部，其生成重新配置的波形中的边缘的定时分布;以及统计值计算部，其计算定时分布的统计值。 采样部分可以对具有周期T一定次数N的测量信号进行采样，而测量信号重复M个周期，其中M和N是互质的。

公开(公告)号：US07501905B2

公开(公告)日：2009-03-10

申请号：US11609950

申请日：2006-12-13

申请人： Kiyotaka Ichiyama ,  Masahiro Ishida

发明人： Kiyotaka Ichiyama ,  Masahiro Ishida

IPC分类号： H03B1/00

CPC分类号： H03L7/08 ,  H03L7/0891

摘要： An oscillator circuit that generates an oscillation signal is provided. The oscillator circuit includes: a voltage controlled oscillator that outputs the oscillation signal with a frequency corresponding to a provided control voltage; and a jitter demodulator that extracts a phase fluctuation component of the oscillation signal outputted by the voltage controlled oscillator and modulates the control voltage according to the phase fluctuation component. The oscillator circuit may further include a low pass filter that removes a frequency component larger than a predetermined cutoff frequency of the control frequency inputted to the voltage controlled oscillator and provides the same to the voltage controlled oscillator.

摘要翻译： 提供产生振荡信号的振荡电路。 所述振荡器电路包括：压控振荡器，其以对应于所提供的控制电压的频率输出所述振荡信号; 以及抖动解调器，其提取由压控振荡器输出的振荡信号的相位波动分量，并根据相位波动分量调制控制电压。 振荡器电路还可以包括低通滤波器，其去除大于输入到压控振荡器的控制频率的预定截止频率的频率分量，并将其提供给压控振荡器。

公开(公告)号：US20080151981A1

公开(公告)日：2008-06-26

申请号：US11616010

申请日：2006-12-25

申请人： Kiyotaka Ichiyama ,  Masahiro Ishida

发明人： Kiyotaka Ichiyama ,  Masahiro Ishida

IPC分类号： H04Q1/20

CPC分类号： G01R31/31709

摘要： There is provided a jitter amplifier circuit for amplifying jitter included in an input signal. The jitter amplifier circuit includes a distorting circuit that receives the input signal, and distorts a waveform of the input signal so as to generate a harmonic component of the input signal, and a filter that passes, out of the distorted signal output from the distorting circuit, a harmonic component of a certain order which is determined in accordance with an amplification ratio of amplifying the jitter.

摘要翻译： 提供了用于放大输入信号中包含的抖动的抖动放大器电路。 抖动放大器电路包括：失真电路，其接收输入信号，并且扭曲输入信号的波形，以产生输入信号的谐波分量;以及滤波器，其从失真电路输出的失真信号中通过 ，根据放大抖动的放大率确定的一定次序的谐波分量。

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：US08204165B2

公开(公告)日：2012-06-19

申请号：US11616038

申请日：2006-12-26

申请人： Kiyotaka Ichiyama ,  Masahiro Ishida

发明人： Kiyotaka Ichiyama ,  Masahiro Ishida

IPC分类号： H04L7/00

CPC分类号： G01R29/26 ,  G01R31/31709 ,  H04L1/205

摘要： There is provided a jitter measurement apparatus to measure jitter of a signal under measurement. The jitter measurement apparatus includes a pulse generator that outputs a demodulated signal indicating the jitter of the signal under measurement, by outputting a pulse having a substantially constant pulse width in synchronization with each predetermined edge of the signal under measurement, a DC component detecting section that detects a DC component of the demodulated signal output from the pulse generator, and an adjusting section that adjusts the pulse width of the pulse output from the pulse generator, based on the DC component of the demodulated signal which is detected by the DC component detecting section.

摘要翻译： 提供了测量测量信号的抖动的抖动测量装置。 抖动测量装置包括脉冲发生器，通过与测量信号的每个预定边沿同步地输出具有基本上恒定的脉冲宽度的脉冲，输出指示被测信号的抖动的解调信号; DC分量检测部分， 检测从脉冲发生器输出的解调信号的直流分量，以及调整部，其基于由直流成分检测部检测出的解调信号的直流成分，调整从脉冲发生器输出的脉冲的脉冲宽度 。

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 。