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1.发明授权公开(公告)号：US09130751B2
公开(公告)日：2015-09-08
申请号：US13337052
申请日：2011-12-24
申请人： Pavel R. Zivny , Maria Agoston , Kan Tan
发明人： Pavel R. Zivny , Maria Agoston , Kan Tan
CPC分类号： H04L43/087 , H04L1/205 , H04L43/045
摘要： Method and systems are described for estimating signal impairments, in particular jitter that includes uncorrelated, non-periodic signal impairments. One system may take the form of an oscilloscope. The estimates may take the form of a probability density function (PDF) for uncorrelated signal impairments that has been modified to replace low probability regions with a known approximation and an extrapolation of the known approximation.
摘要翻译： 描述了用于估计信号损伤的方法和系统，特别是包括不相关的非周期信号损伤的抖动。 一个系统可能采用示波器的形式。 估计可以采用未相关信号损伤的概率密度函数（PDF）的形式，其已经被修改以用已知近似的已知近似和外推来代替低概率区域。
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2.发明申请System for Independently Modifying Jitter and Noise Components in a Signal Measurement Device 审中-公开用于独立修改信号测量装置中的抖动和噪声组件的系统公开(公告)号：US20110103451A1
公开(公告)日：2011-05-05
申请号：US12610085
申请日：2009-10-30
IPC分类号： H04B17/00
CPC分类号： G01R31/31709 , H04L1/205
摘要： A digitizing instrument is used for modifying pattern data and jitter and noise components of a communication signal. In a typical implementation, the midpoints of a rising edge slope and horizontal portion of the communication signal are determined and multiple digital data records are acquired at the midpoints. The data sample records are transformed to frequency components and the random jitter and noise, and periodic jitter and noise components are determined. A correlated pattern data and the jitter and noise components are matrix elements in a simulated signal channel having communication system elements. Each correlated pattern data and jitter and noise component may be modified for each of the communication system element. The selectively modified correlated pattern data and jitter and noise components are combined to produce a modified communication signal that is displayed as a numeric table, eye diagram or bit error rate presentation.
摘要翻译： 数字化仪器用于修改通信信号的模式数据和抖动和噪声分量。 在典型的实现中，确定通信信号的上升沿和水平部分的中点，并在中点获取多个数字数据记录。 将数据采样记录转换为频率分量，并确定随机抖动和噪声，并确定周期性抖动和噪声分量。 相关图案数据和抖动和噪声分量是具有通信系统元件的模拟信号通道中的矩阵元素。 可以为每个通信系统元件修改每个相关图案数据和抖动和噪声分量。 选择性地修改的相关图案数据和抖动和噪声分量被组合以产生被显示为数字表，眼图或误码率显示的修改的通信信号。
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3.发明申请公开(公告)号：US20090074030A1
公开(公告)日：2009-03-19
申请号：US12211009
申请日：2008-09-15
申请人： Maria Agoston , Laszlo J. Dobos , Pavel R. Zivny
发明人： Maria Agoston , Laszlo J. Dobos , Pavel R. Zivny
IPC分类号： H04B1/69
CPC分类号： H04B15/02 , H04B2215/067
摘要： Parameters of a spread spectrum clock signal in a communication signal are characterized by acquiring voltage samples of the communication signal at a nominal time location of an edge of the communication signal. The voltage samples are converted to time samples and the difference between the maximum and minimum time values is determined at the nominal time location. A spread spectrum clock magnitude number is generated by dividing the difference between the maximum and minimum time values by the nominal time location of the acquired voltage samples of the spread spectrum clock signal. A spread spectrum modulation profile of a spread spectrum clock signal is estimated by over sampling the time samples using an aliased index value to generate over sampled triangular waveforms representing the spread spectrum clock modulation profile. One of the over sampled triangular waveforms is use to generate the spread spectrum clock modulation profile.
摘要翻译： 通信信号中的扩频时钟信号的参数的特征在于在通信信号的边缘的标称时间位置处获取通信信号的电压采样。 将电压样本转换为时间采样，并在标称时间位置确定最大和最小时间值之间的差值。 通过将最大和最小时间值之间的差除以所获取的扩频时钟信号的电压样本的标称时间位置来产生扩频时钟幅度数。 通过使用混叠索引值对时间采样进行过采样来估计扩频时钟信号的扩频调制分布，以产生表示扩频时钟调制分布的过采样三角波。 一个过采样三角波形用于产生扩频时钟调制曲线。
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4.发明授权System for independently modifying jitter and noise components in a signal digitizing instrument 有权用于独立修改信号数字化仪器中的抖动和噪声分量的系统公开(公告)号：US08332172B2
公开(公告)日：2012-12-11
申请号：US13333970
申请日：2011-12-21
CPC分类号： G01R31/31709 , H04L1/205
摘要： A digitizing instrument is used for modifying pattern data and jitter and noise components of a communication signal. In a typical implementation, the midpoints of a rising edge slope and horizontal portion of the communication signal are determined and multiple digital data records are acquired at the midpoints. The data sample records are transformed to frequency components and the random jitter and noise, and periodic jitter and noise components are determined. A correlated pattern data and the jitter and noise components are matrix elements in a simulated signal channel having communication system elements. Each correlated pattern data and jitter and noise component may be modified for each of the communication system element. The selectively modified correlated pattern data and jitter and noise components are combined to produce a modified communication signal that is displayed as a numeric table, eye diagram or bit error rate presentation.
摘要翻译： 数字化仪器用于修改通信信号的模式数据和抖动和噪声分量。 在典型的实现中，确定通信信号的上升沿和水平部分的中点，并在中点获取多个数字数据记录。 将数据采样记录转换为频率分量，并确定随机抖动和噪声，并确定周期性抖动和噪声分量。 相关图案数据和抖动和噪声分量是具有通信系统元件的模拟信号通道中的矩阵元素。 可以为每个通信系统元件修改每个相关图案数据和抖动和噪声分量。 选择性地修改的相关图案数据和抖动和噪声分量被组合以产生被显示为数字表，眼图或误码率显示的修改的通信信号。
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5.发明授权公开(公告)号：US08155165B2
公开(公告)日：2012-04-10
申请号：US12211009
申请日：2008-09-15
申请人： Maria Agoston , Laszlo J. Dobos , Pavel R. Zivny
发明人： Maria Agoston , Laszlo J. Dobos , Pavel R. Zivny
IPC分类号： H04B1/00
CPC分类号： H04B15/02 , H04B2215/067
摘要： Parameters of a spread spectrum clock signal in a communication signal are characterized by acquiring voltage samples of the communication signal at a nominal time location of an edge of the communication signal. The voltage samples are converted to time samples and the difference between the maximum and minimum time values is determined at the nominal time location. A spread spectrum clock magnitude number is generated by dividing the difference between the maximum and minimum time values by the nominal time location of the acquired voltage samples of the spread spectrum clock signal. A spread spectrum modulation profile of a spread spectrum clock signal is estimated by over sampling the time samples using an aliased index value to generate over sampled triangular waveforms representing the spread spectrum clock modulation profile. One of the over sampled triangular waveforms is use to generate the spread spectrum clock modulation profile.
摘要翻译： 通信信号中的扩频时钟信号的参数的特征在于在通信信号的边缘的标称时间位置处获取通信信号的电压采样。 将电压样本转换为时间采样，并在标称时间位置确定最大和最小时间值之间的差值。 通过将最大和最小时间值之间的差除以所获取的扩频时钟信号的电压样本的标称时间位置来产生扩频时钟幅度数。 通过使用混叠索引值对时间采样进行过采样来估计扩频时钟信号的扩频调制分布，以产生表示扩频时钟调制分布的过采样三角波。 一个过采样三角波形用于产生扩频时钟调制曲线。
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6.发明申请System for Independently Modifying Jitter and Noise Components in a Signal Digitizing Instrument 有权用于独立修改信号数字化仪器中的抖动和噪声分量的系统公开(公告)号：US20120158334A1
公开(公告)日：2012-06-21
申请号：US13333970
申请日：2011-12-21
CPC分类号： G01R31/31709 , H04L1/205
摘要： A digitizing instrument is used for modifying pattern data and jitter and noise components of a communication signal. In a typical implementation, the midpoints of a rising edge slope and horizontal portion of the communication signal are determined and multiple digital data records are acquired at the midpoints. The data sample records are transformed to frequency components and the random jitter and noise, and periodic jitter and noise components are determined. A correlated pattern data and the jitter and noise components are matrix elements in a simulated signal channel having communication system elements. Each correlated pattern data and jitter and noise component may be modified for each of the communication system element. The selectively modified correlated pattern data and jitter and noise components are combined to produce a modified communication signal that is displayed as a numeric table, eye diagram or bit error rate presentation.
摘要翻译： 数字化仪器用于修改通信信号的模式数据和抖动和噪声分量。 在典型的实现中，确定通信信号的上升沿和水平部分的中点，并在中点获取多个数字数据记录。 将数据采样记录转换为频率分量，并确定随机抖动和噪声，并确定周期性抖动和噪声分量。 相关图案数据和抖动和噪声分量是具有通信系统元件的模拟信号通道中的矩阵元素。 可以为每个通信系统元件修改每个相关图案数据和抖动和噪声分量。 选择性地修改的相关图案数据和抖动和噪声分量被组合以产生被显示为数字表，眼图或误码率显示的修改的通信信号。
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公开(公告)号：US5268851A
公开(公告)日：1993-12-07
申请号：US780174
申请日：1991-10-21
申请人： Pavel R. Zivny
发明人： Pavel R. Zivny
CPC分类号： H03K3/0375 , G01R13/32
摘要： A method of detection of metastability of a trigger in a digital storage oscilloscope compares a predetermined address used to produce a trigger ready signal with a current address determined by the occurrence of a trigger event after the trigger ready signal. If the difference between the two addresses is within a predetermined limit, a metastable condition is indicated, and data acquired is treated as corrupted data.
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8.发明授权公开(公告)号：US07746058B2
公开(公告)日：2010-06-29
申请号：US12053473
申请日：2008-03-21
申请人： Michael A. Nelson , Pavel R. Zivny
发明人： Michael A. Nelson , Pavel R. Zivny
CPC分类号： G01R13/0218 , G01R29/26 , G01R31/31709
摘要： A sequential equivalent-time sampling oscilloscope simultaneously acquires samples of a signal-under-test and a reference clock that is asynchronous with the signal-under-test. The oscilloscope converts the samples of the reference clock into timestamps and uses the timestamps to compensate for the jitter of the oscilloscope and to indicate the absolute jitter of the signal-under-test.
摘要翻译： 一个顺序的等效时间采样示波器同时采集与被测信号不同的待测信号和参考时钟的采样。 示波器将参考时钟的采样转换为时间戳，并使用时间戳来补偿示波器的抖动，并指示待测信号的绝对抖动。
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公开(公告)号：US5530341A
公开(公告)日：1996-06-25
申请号：US320722
申请日：1994-10-11
申请人： Pavel R. Zivny , Edward E. Averill
发明人： Pavel R. Zivny , Edward E. Averill
CPC分类号： G01R13/345 , G01R13/32
摘要： A trigger system for a digital oscilloscope operating in external clock mode. Every n pulses, the trigger system generates a trigger signal. The trigger system therefore provides a trigger every n samples of the input signal waveform.
摘要翻译： 用于在外部时钟模式下工作的数字示波器的触发系统。 每n个脉冲，触发系统产生触发信号。 因此，触发系统每输入信号波形的n个样本提供触发。
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