公开(公告)号：US08045605B2

公开(公告)日：2011-10-25

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： H04B3/46 ,  H04B17/00 ,  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：US07971107B2

公开(公告)日：2011-06-28

申请号：US12343505

申请日：2008-12-24

申请人： Kiyotaka Ichiyama ,  Masahiro Ishida

发明人： Kiyotaka Ichiyama ,  Masahiro Ishida

IPC分类号： G06F11/00

CPC分类号： G01R29/26 ,  G01R31/31709

摘要： A calculating apparatus that calculates a characteristic of a target signal, including an input section that receives a bit error or a sampling timing, and a calculating section that calculates sampling timings over a range in which the bit error rate is less than a designated value or a bit error rate at a designated sampling timing, by using a relational expression between the sampling timing and the bit error rate. A transmission model for transmitting a signal having jitter includes a random component and a deterministic component having a prescribed probability density distribution. The relational expression is achieved by substituting, as parameters, a standard deviation of a random component and a peak-to-peak value of a deterministic component in a jitter of the target signal.

摘要翻译： 一种计算装置，其计算目标信号的特性，包括接收比特误差或采样定时的输入部分，以及计算部分，其计算在误码率小于指定值的范围内的采样定时，或 通过使用采样定时和误码率之间的关系表达式，在指定的采样定时处的误码率。 用于发送具有抖动的信号的传输模型包括具有规定的概率密度分布的随机分量和确定性分量。 通过将目标信号的抖动中的确定性分量的随机分量的标准偏差和峰 - 峰值代入参数来实现关系表达式。

公开(公告)号：US07801211B2

公开(公告)日：2010-09-21

申请号：US11763451

申请日：2007-06-15

申请人： Kiyotaka Ichiyama ,  Masahiro Ishida

发明人： Kiyotaka Ichiyama ,  Masahiro Ishida

IPC分类号： H03H7/40

CPC分类号： H04L25/03885 ,  H04L25/03057

摘要： A communication system in which a signal is transferred includes a transmitter that transmits a signal, a receiver that receives a signal transmitted thereto, and an adaptive equalizer that generates a compensated signal by compensating degradation of the signal to be received by the receiver. The adaptive equalizer includes a signal compensating section that generates the compensated signal by passing therethrough the signal to be received by the receiver, a jitter measuring section that measures jitter of the compensated signal output from the signal compensating section, and an adjusting section that adjusts a characteristic of the signal compensating section so as to reduce the jitter of the compensated signal which is measured by the jitter measuring section.

摘要翻译： 其中传送信号的通信系统包括发送信号的发送机，接收发送信号的接收机以及通过补偿由接收机接收的信号的劣化而产生补偿信号的自适应均衡器。 自适应均衡器包括信号补偿部分，其通过通过由接收机接收的信号来产生补偿信号;抖动测量部分，其测量从信号补偿部分输出的补偿信号的抖动;以及调整部分， 信号补偿部分的特性，以减少由抖动测量部分测量的补偿信号的抖动。

公开(公告)号：US07715512B2

公开(公告)日：2010-05-11

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： H04L7/00 ,  H04L25/00 ,  H04L25/40

CPC分类号： G01R29/26 ,  G01R31/31709

摘要： A jitter measurement apparatus measures a jitter of a data signal having a substantially constant data rate. The jitter measurement apparatus includes therein a signal converting section that generates a clock signal based on the data 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 generates an analytic signal represented by a complex number based on the clock signal, and a jitter measuring section that measures the jitter of the data signal based on the analytic signal.

摘要翻译： 抖动测量装置测量具有基本恒定数据速率的数据信号的抖动。 抖动测量装置包括信号转换部分，其根据数据信号产生时钟信号，其中，时钟信号保持数据信号的数据信号的数据信号的数据转换边沿的定时，并且具有周期的边沿 基本上等于数据速率，分析信号产生部分，其基于时钟信号产生由复数表示的分析信号，以及抖动测量部分，其基于分析信号来测量数据信号的抖动。

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：US07412341B2

公开(公告)日：2008-08-12

申请号：US11390340

申请日：2006-03-28

申请人： Kiyotaka Ichiyama ,  Masahiro Ishida ,  Takahiro Yamaguchi

发明人： Kiyotaka Ichiyama ,  Masahiro Ishida ,  Takahiro Yamaguchi

IPC分类号： G06F19/00

CPC分类号： G01R31/31709

摘要： There is provided a jitter amplifier for amplifying or attenuating a jitter component contained in an input signal, having a jitter demodulating section for demodulating the jitter component from the input signal and an amplifying circuit for amplifying or attenuating the jitter component by controlling phase of the input signal based on the jitter component.

摘要翻译： 提供了一种用于放大或衰减包含在输入信号中的抖动分量的抖动放大器，具有用于从输入信号解调抖动分量的抖动解调部分和用于通过控制输入的相位来放大或衰减抖动分量的放大电路 基于抖动分量的信号。

公开(公告)号：US07394277B2

公开(公告)日：2008-07-01

申请号：US11407136

申请日：2006-04-20

申请人： Masahiro Ishida ,  Kiyotaka Ichiyama ,  Takahiro Yamaguchi

发明人： Masahiro Ishida ,  Kiyotaka Ichiyama ,  Takahiro Yamaguchi

IPC分类号： G01R31/26

CPC分类号： G01R31/31908 ,  G01R31/31725

摘要： There is provided a testing apparatus for evaluating a device-under-test, having an extracting section for extracting jitter components out of an output signal outputted out of the device-under-test, a filter for passing predetermined frequency components in the jitter components, a phase control section for controlling phase of the output signal based on the jitter components outputted out of the filter and an evaluating section for evaluating the device-under-test based on a signal outputted out of the phase control section.

摘要翻译： 提供了一种用于评估被测器件的测试装置，具有提取部分，用于从经测试的器件输出的输出信号中提取抖动分量，用于使抖动分量中的预定频率分量通过的滤波器， 相位控制部分，用于基于从滤波器输出的抖动分量来控制输出信号的相位;以及评估部分，用于基于从相位控制部分输出的信号来评估被测器件。

公开(公告)号：US20070236284A1

公开(公告)日：2007-10-11

申请号：US11371849

申请日：2006-03-10

申请人： Kiyotaka Ichiyama ,  Masahiro Ishida ,  Takahiro Yamaguchi

发明人： Kiyotaka Ichiyama ,  Masahiro Ishida ,  Takahiro Yamaguchi

IPC分类号： H03K9/00

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

摘要： There is provided a calibration apparatus for calibrating an electronic device that outputs a demodulation signal in which a modulated component of a signal to be tested or evaluated is demodulated, having a DC component detecting section for detecting a DC component of the demodulation signal, a gain calculating section for calculating a gain in the electronic device based on the DC component of the demodulation signal and a calibrating section for calibrating the electronic device based on the gain in the electronic device.

摘要翻译： 提供了一种用于校准电子装置的校准装置，该电子装置输出其中被测试或评估的信号的调制分量被解调的解调信号，具有用于检测解调信号的DC分量的DC分量检测部分， 计算部分，用于基于解调信号的DC分量计算电子设备中的增益;以及校准部分，用于基于电子设备中的增益校准电子设备。

公开(公告)号：US20070211795A1

公开(公告)日：2007-09-13

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： H04B17/00

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：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。