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1. 发明授权

US10234483B2 Sampling circuit, sampling method, sampling oscilloscope, and waveform display method 有权
公开(公告)号：US10234483B2
公开(公告)日：2019-03-19
申请号：US15082332
申请日：2016-03-28
申请人： ANRITSU CORPORATION
发明人： Ken Mochizuki , Takashi Murakami , Seiya Suzuki
IPC分类号： G01R13/02 , H04L7/033
摘要： A frequency synthesizer 11a outputs a periodic signal r(t) at a frequency detuned by a predetermined frequency Δf [Hz] from a frequency of 1/integer of a frequency of a reference clock signal f0 synchronized with a signal to be measured ws. A first sampler unit 12 samples the signal to be measured ws at a timing of the trigger signal CLK. A second sampler unit 13a samples an I signal I(t) at the timing of the trigger signal CLK. A phase shifter 13b outputs a Q signal Q(t) obtained by shifting a phase of the reference clock signal f0 by 90°. A third sampler unit 13c samples the Q signal at the timing of the trigger signal CLK. A correction value calculation unit 13d calculates a correction value Δt(n) based on sampling data I(n) and Q(n) and a set value t(n) of a sampling time.

2. 发明授权

US11193956B2 Sampling oscilloscope, trigger generation method, and sampling method 有权
公开(公告)号：US11193956B2
公开(公告)日：2021-12-07
申请号：US16220848
申请日：2018-12-14
申请人： ANRITSU CORPORATION
发明人： Takashi Murakami
IPC分类号： G01R13/02 , G06F1/04 , G06F1/02 , G06F3/05
摘要： A sampling oscilloscope includes a trigger generation circuit that includes a direct digital synthesizer (DDS) that outputs a trigger clock input in an operable frequency range at an arbitrary output frequency, a band pass filter (BPF) that limits a pass band of the trigger clock output from the direct digital synthesizer and a variable frequency divider that divides a frequency of the trigger clock of which the pass band is limited by the band pass filter, and generates a strobe signal of a frequency at which a sampler can be operated. The sampling oscilloscope includes a controller that calculates a phase shift amount with reference to a pattern cycle of data generated by a one-time strobe signal and adjusts a phase by changing a count value of a phase accumulator of the direct digital synthesizer so that the calculated phase shift amount is eliminated.

3. 发明申请

US20160363614A1 SAMPLING CIRCUIT, SAMPLING METHOD, SAMPLING OSCILLOSCOPE, AND WAVEFORM DISPLAY METHOD 审中-公开
标题翻译：采样电路，采样方法，采样振荡器和波形显示方法
公开(公告)号：US20160363614A1
公开(公告)日：2016-12-15
申请号：US15082332
申请日：2016-03-28
申请人： ANRITSU CORPORATION
发明人： Ken Mochizuki , Takashi Murakami , Seiya Suzuki
IPC分类号： G01R13/02 , H03L7/18
CPC分类号： G01R13/0272 , G01R13/0254
摘要： A frequency synthesizer 11a outputs a periodic signal r(t) at a frequency detuned by a predetermined frequency Δf [Hz] from a frequency of 1/integer of a frequency of a reference clock signal f0 synchronized with a signal to be measured ws. A first sampler unit 12 samples the signal to be measured ws at a timing of the trigger signal CLK. A second sampler unit 13a samples an I signal I(t) at the timing of the trigger signal CLK. A phase shifter 13b outputs a Q signal Q(t) obtained by shifting a phase of the reference clock signal f0 by 90°. A third sampler unit 13c samples the Q signal at the timing of the trigger signal CLK. A correction value calculation unit 13d calculates a correction value Δt(n) based on sampling data I(n) and Q(n) and a set value t(n) of a sampling time.
摘要翻译：频率合成器11a以与要测量的信号ws同步的参考时钟信号f0的频率的1 /整数的频率，输出以预定频率Δf[Hz]失谐的频率的周期信号r（t）。第一采样单元12在触发信号CLK的定时对采样的信号ws进行采样。第二取样器单元13a在触发信号CLK的定时对I信号I（t）进行采样。移相器13b输出通过将参考时钟信号f0的相位偏移90°而获得的Q信号Q（t）。第三取样器单元13c在触发信号CLK的定时对Q信号进行采样。校正值计算单元13d基于采样数据I（n）和Q（n）和采样时间的设定值t（n）来计算校正值Δt（n）。

4. 发明授权

US08811463B2 Jitter measuring trigger generator, jitter measuring apparatus using the same, method of generating jitter measuring trigger, and method of measuring jitter 有权
标题翻译：抖动测量触发发生器，使用其的抖动测量装置，产生抖动测量触发的方法和测量抖动的方法
公开(公告)号：US08811463B2
公开(公告)日：2014-08-19
申请号：US13752872
申请日：2013-01-29
申请人： Anritsu Corporation
发明人： Takashi Murakami , Hisashi Matsumoto
IPC分类号： H04B3/46 , H04B17/00 , H04Q1/20 , G01R31/317 , H03B19/00 , G01R29/02
CPC分类号： G01R29/02 , G01R31/31709 , H03B19/00
摘要： A phase adjuster 2a receives a trigger clock synchronized with a data signal to be measured as input, and controls the phase of the trigger clock such that the trigger period of samples of the data signal to be measured becomes one sample per bit. An adjustable frequency divider 2b has a frequency division ratio which is set such that a trigger pulse is generated at the fixed timing of the waveform pattern of the data signal to be measured. An interleaving unit 4d uses a discrete value which is in prime relation to the measured pattern length of the data signal to be measured, and acquires data for the number of samples corresponding to the measured pattern length from a sampler 3 by the trigger pulse from the adjustable frequency divider 2b.
摘要翻译：相位调整器2a接收与要测量的数据信号同步的触发时钟作为输入，并且控制触发时钟的相位，使得要测量的数据信号的采样的触发周期变为每位一个采样。可调分频器2b具有分频比，其被设置为使得在要测量的数据信号的波形图案的固定定时产生触发脉冲。交错单元4d使用与所测量的数据信号的测量图案长度相关的离散值，并且从采样器3获取与来自测量样本3的触发脉冲相对应的样本数量的数据，可调分频器2b。

5. 发明申请

US20130200923A1 JITTER MEASURING TRIGGER GENERATOR, JITTER MEASURING APPARATUS USING THE SAME, METHOD OF GENERATING JITTER MEASURING TRIGGER, AND METHOD OF MEASURING JITTER 有权
标题翻译：抖动测量触发发生器，使用其的抖动测量装置，生成抖动测量触发器的方法以及测量抖动的方法
公开(公告)号：US20130200923A1
公开(公告)日：2013-08-08
申请号：US13752872
申请日：2013-01-29
申请人： Anritsu Corporation
发明人： Takashi Murakami , Hisashi Matsumoto
IPC分类号： G01R29/02 , H03B19/00
CPC分类号： G01R29/02 , G01R31/31709 , H03B19/00
摘要： A phase adjuster 2a receives a trigger clock synchronized with a data signal to be measured as input, and controls the phase of the trigger clock such that the trigger period of samples of the data signal to be measured becomes one sample per bit. An adjustable frequency divider 2b has a frequency division ratio which is set such that a trigger pulse is generated at the fixed timing of the waveform pattern of the data signal to be measured. An interleaving unit 4d uses a discrete value which is in prime relation to the measured pattern length of the data signal to be measured, and acquires data for the number of samples corresponding to the measured pattern length from a sampler 3 by the trigger pulse from the adjustable frequency divider 2b.
摘要翻译：相位调整器2a接收与要测量的数据信号同步的触发时钟作为输入，并且控制触发时钟的相位，使得要测量的数据信号的采样的触发周期变为每位一个采样。可调分频器2b具有分频比，其被设置为使得在要测量的数据信号的波形图案的固定定时产生触发脉冲。交错单元4d使用与所测量的数据信号的测量图案长度相关的离散值，并且从采样器3获取与来自测量样本3的触发脉冲相对应的样本数量的数据，可调分频器2b。

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