公开(公告)号：US08270460B2

公开(公告)日：2012-09-18

申请号：US12643138

申请日：2009-12-21

申请人： David Dascher ,  Allen Montijo

发明人： David Dascher ,  Allen Montijo

IPC分类号： H04B3/46 ,  H04B1/10

CPC分类号： H04B15/00

摘要： An apparatus and method for determining if ringing in an output signal from a receiver that processes an input signal is the result of a bandwidth limitation in the receiver that processes an input signal rather than ringing in the input signal is disclosed. The apparatus includes the receiver and a ring suppression filter. The ring suppression filter receives the receiver output signal and generates a ring suppressed output signal therefrom. The receiver and the ring suppression filter provide a first aggregate system response such that the ring suppressed output signal does not include ringing introduced by the receiver. The first aggregate system response is linear in phase.

摘要翻译： 公开了一种用于确定来自处理输入信号的接收机的输出信号中的振铃是处理输入信号而不是在输入信号中振铃的接收机中的带宽限制的结果的装置和方法。 该装置包括接收器和环形抑制滤波器。 环形抑制滤波器接收接收机输出信号并从其产生抑制振铃的输出信号。 接收机和环形抑制滤波器提供第一聚合系统响应，使得环抑制的输出信号不包括由接收机引入的振铃。 第一个聚合系统响应是相位线性的。

公开(公告)号：US20110150068A1

公开(公告)日：2011-06-23

申请号：US12643138

申请日：2009-12-21

申请人： David Dascher ,  Allen Montijo

发明人： David Dascher ,  Allen Montijo

IPC分类号： H04B17/00

CPC分类号： H04B15/00

摘要： An apparatus and method for determining if ringing in an output signal from a receiver that processes an input signal is the result of a bandwidth limitation in the receiver that processes an input signal rather than ringing in the input signal is disclosed. The apparatus includes the receiver and a ring suppression filter. The ring suppression filter receives the receiver output signal and generates a ring suppressed output signal therefrom. The receiver and the ring suppression filter provide a first aggregate system response such that the ring suppressed output signal does not include ringing introduced by the receiver. The first aggregate system response is linear in phase.

摘要翻译： 公开了一种用于确定来自处理输入信号的接收机的输出信号中的振铃是处理输入信号而不是在输入信号中振铃的接收机中的带宽限制的结果的装置和方法。 该装置包括接收器和环形抑制滤波器。 环形抑制滤波器接收接收机输出信号并从其产生抑制振铃的输出信号。 接收机和环形抑制滤波器提供第一聚合系统响应，使得环抑制的输出信号不包括由接收机引入的振铃。 第一个聚合系统响应是相位线性的。

公开(公告)号：US07248982B1

公开(公告)日：2007-07-24

申请号：US11479414

申请日：2006-06-29

申请人： Steven D Draving ,  Allen Montijo

发明人： Steven D Draving ,  Allen Montijo

IPC分类号： G01R29/26 ,  H04Q1/20

CPC分类号： G01R31/31709 ,  H04L1/205

摘要： Discovery of DDJ within measured Total Jitter (TJ) begins with a suitably long digital Test Pattern, from which an Acquisition Record is made. A Time Interval Error/Voltage Error Record is made of the Acquisition Record. A Template defines a collection of associated bit value or transitions that are nearby or otherwise related to a bit location of interest, and through the applied test pattern produces a sequence of Data Symbols. The TIE/VLE Record is examined, and a parameter is measured for each Data Symbol as it occurs in the Test Pattern. A regression technique may be use to find coefficients for a DDJ Calculator whose inputs are the Data Symbols and whose output is respective values of DDJ. Subsequent separation of DDJ from TJ is possible because DDJ is correlated with the Data Symbols, while Periodic Jitter (PJ) and Random Jitter (RJ) can be expected to average to near zero over a sufficient number of instances of a given Data Symbol.

摘要翻译： 在测量的总抖动（TJ）内发现DDJ以适当长的数字测试模式开始，从中获取采集记录。 时间间隔错误/电压错误记录由采集记录组成。 模板定义了与感兴趣的位位置相邻或相关的关联位值或转换的集合，并且通过应用的测试模式产生一系列数据符号。 检查TIE / VLE记录，并且在测试模式中发生每个数据符号时测量一个参数。 可以使用回归技术来找到DDJ计算器的系数，其输入是数据符号，其输出是DDJ的相应值。 DDJ与TJ之间的分离是可能的，因为DDJ与数据符号相关，而在给定数据符号的足够数量的情况下，期望抖动（PJ）和随机抖动（RJ）可以平均接近零。

公开(公告)号：US07251572B1

公开(公告)日：2007-07-31

申请号：US11486559

申请日：2006-07-14

申请人： Steven D Draving ,  Allen Montijo

发明人： Steven D Draving ,  Allen Montijo

IPC分类号： G06F19/00 ,  H04B17/00

CPC分类号： H04L1/205 ,  H04L1/24

摘要： Discovery of RJ assumes an Adjusted TIE Record for TJ from which DDJ has been removed. What remains is PJ+RJ, from whose Fourier Transform PJ is ‘synthetically de-convolved’ to leave just RJ: Calculate the Power Density Spectrum of PJ+RJ, and determine a threshold that indicates a PJ component. Identify in the PDS the largest frequency component that exceeds the threshold, otherwise there is no significant PJ and PJ+RJ can be taken as RJ. If a frequency component exceeds the threshold, take the largest and calculate what the convolution of it with the FT of the Transition Pattern would be if this circumstance were to occur in isolation, and then remove it from PJ+RJ. Repeat with continued iterations, until there are no further PJ components.

摘要翻译： 发现RJ假定已经删除了DDJ的TJ的调整TIE记录。 剩下的是PJ + RJ，其傅里叶变换PJ是“合成去卷积”，只留下RJ：计算PJ + RJ的功率密度谱，并确定表示PJ分量的阈值。 在PDS中识别超过阈值的最大频率分量，否则没有显着的PJ，PJ + RJ可以取为RJ。 如果频率分量超过阈值，则取最大值，并计算出如果这种情况是孤立发生，则转换模式的FT的卷积将会与PJ + RJ相同。 重复连续迭代，直到没有进一步的PJ组件。

公开(公告)号：US20050246113A1

公开(公告)日：2005-11-03

申请号：US10835759

申请日：2004-04-30

申请人： Allen Montijo

发明人： Allen Montijo

IPC分类号： G01R13/02 ,  G01R15/00

CPC分类号： G01R13/0272

摘要： DSP correction is applied to the equally spaced samples of individual acquisition records to produce individually compensated acquisition records, where the compensation is based upon previous knowledge of what the 'scope is “doing wrong.” This produces dense segments of data that might actually have been sampled, had the hardware not had real-world defects (e.g., frequency dependent attenuation and discontinuities in transmission lines). These segments are merged into an equivalent time collection of correct data, while taking into account the associated shift in the time axis corresponding to the locations of the different segments. The resulting amplitude-corrected time shifted (time, voltage) pairs are an equivalent time representation of a very long pseudo real time acquisition record which is made available to the rendering process.

摘要翻译： DSP校正应用于个别采集记录的等间距样本，以产生单独补偿的采集记录，其中补偿基于以前对“范围”做错的知识。 如果硬件没有真实世界的缺陷（例如，频率依赖衰减和传输线中的不连续性），则会产生可能实际已被采样的密集数据段。 这些段被合并为正确数据的等效时间集合，同时考虑到与不同段的位置对应的时间轴中的相关移位。 所得到的幅度校正时间偏移（时间，电压）对是对渲染过程可用的非常长的伪实时采集记录的等效时间表示。

公开(公告)号：US07480329B2

公开(公告)日：2009-01-20

申请号：US10978103

申请日：2004-10-29

申请人： Steven D. Draving ,  Allen Montijo

发明人： Steven D. Draving ,  Allen Montijo

IPC分类号： H04B3/46

CPC分类号： H04L1/205

摘要： Separation and analysis of measured Total Jitter (TJ) begins with a suitably long arbitrary digital test pattern, from which an Acquisition Record is made. A Time Interval Error (TIE) or Voltage Level Error (VLE) Record is made of the Acquisition Record. A Template defines a collection of associated bit value or transitions that are nearby or otherwise related to a bit location of interest, and has associated therewith a collection of Descriptors and their respective Metrics. Each Descriptor identifies one of the various different patterns of bit value or transitions that fit the Template. The TIE/VLE Record is examined, and a parameter is measured for each instance of each Descriptor for the Template. The collection of measured parameters for each particular Descriptor are combined (e.g., averaging) to produce the Metric for that Descriptor. A Look-Up Table (LUT) addressed by the different possible Descriptors is loaded with the associated discovered Metric, which is a plausible value for Data Dependent Jitter (DDJ) at that bit. DDJ separates from TJ because DDJ is correlated with the Descriptors, while Periodic Jitter (PJ) and Random Jitter (RJ) can be expected to average to near zero over a sufficient number of instances of a given Descriptor. Identified instances of DDJ are individually removed from corresponding locations of TJ found for the entire waveform (the original TIE/VLE Record) to leave an Adjusted TIE/VLE Record that is PJ convolved with RJ.

摘要翻译： 测量的总抖动（TJ）的分离和分析开始于适当长度的任意数字测试模式，从中进行采集记录。 时间间隔误差（TIE）或电压电平误差（VLE）记录由采集记录组成。 模板定义了与感兴趣的位位置相邻或相关的关联位值或转换的集合，并且与其相关联的描述符及其各自度量的集合。 每个描述符标识适合模板的各种不同模式的位值或转换。 检查TIE / VLE记录，并为模板的每个描述符的每个实例测量一个参数。 将每个特定描述符的测量参数的集合组合（例如，平均）以产生该描述符的度量。 由不同的可能描述符寻址的查找表（LUT）被加载有相关联的发现的度量，这是该比特处的数据依赖抖动（DDJ）的合理值。 DDJ与TJ分离，因为DDJ与描述符相关，而在给定描述符的足够数量的情况下，期望抖动（PJ）和随机抖动（RJ）可以平均接近零。 DDJ的识别实例从整个波形（原始TIE / VLE记录）中找到的TJ的相应位置被单独删除，以保留与RJ卷积的PJ调整的TIE / VLE记录。

公开(公告)号：US07110898B2

公开(公告)日：2006-09-19

申请号：US10898873

申请日：2004-07-26

申请人： Allen Montijo ,  Martin B. Grove

发明人： Allen Montijo ,  Martin B. Grove

IPC分类号： G01R23/02

CPC分类号： G01R13/0254

摘要： A method of data acquisition for a digital instrument having a bandwidth. The method includes receiving a signal and associated trigger. Using that trigger, a plurality of signal values is sampled at multiple time intervals to create an acquisition record representing a continuous fractional segment of the signal. The plurality of samples meets the Nyquist requirement for the bandwidth but is in error according to at least one known error mechanism. The acquisition record is then processed with DSP techniques to produce a compensated acquisition record corrected for the at least one known error mechanism. Each associated compensated acquisition record is incorporated into a result acquisition record as a segment thereof corresponding to a continuous fractional segment of the signal whose signal values were sampled in an associated instance. An additional signal and additional associated trigger are received. The above steps are then repeated for the additional signal and additional associated trigger.

公开(公告)号：US20060045175A1

公开(公告)日：2006-03-02

申请号：US10929194

申请日：2004-08-30

申请人： Steven Draving ,  Allen Montijo

发明人： Steven Draving ,  Allen Montijo

IPC分类号： H04B17/00

CPC分类号： H04L1/205

摘要： Measurement of jitter in a system uses a digital test sequence comprising many repetitions of a test pattern. An Acquisition Record is made of the entire test sequence. A complete Time Interval Error Record is made of the Acquisition Record. The complete TIE Record is separated into a collection of Component TIE Records, one for each transition in the test pattern, and that collectively contain all the different instances in the test sequence of that transition in the test pattern. An FFT is performed on each component TIE Record, and the collected DC contributions of those FFTs are combined to produce indications of Data Dependent Jitter, both as a function of bit position within the test pattern, and for the test sequence as a whole. The various spectral content of the FFTs for the component TIE Records are combined to produce an indication of Random Jitter and Periodic Jitter, which can then be used in finding Deterministic Jitter and Total Jitter. The RJ and PJ components available from the component FFTs are aliased, and non aliased FFTs for each can be produced from the collection of component FFTs.

摘要翻译： 系统中抖动的测量使用包含许多重复的测试图案的数字测试序列。 采集记录由整个测试序列组成。 完整的时间间隔错误记录由采集记录组成。 完整的TIE记录被分为组合TIE记录集合，一个用于测试模式中的每个转换，并且统一包含测试模式中该转换的测试序列中的所有不同实例。 对每个组件TIE记录执行FFT，并且将这些FFT的收集的DC贡献组合以产生数据相关抖动的指示，这两者作为测试模式中的位位置的函数，以及作为整体的测试序列。 组合TIE记录的FFT的各种频谱内容被组合以产生随机抖动和周期性抖动的指示，然后可以用于找到确定性抖动和总抖动。 从组件FFT可获得的RJ和PJ分量是混叠的，并且可以从分量FFT的收集中产生每个的各个非混叠FFT。

公开(公告)号：US07480355B2

公开(公告)日：2009-01-20

申请号：US11059007

申请日：2005-02-16

申请人： Steven D Draving ,  Allen Montijo

发明人： Steven D Draving ,  Allen Montijo

IPC分类号： H04L1/00

CPC分类号： G11B20/10046 ,  G11B20/10009

摘要： Equalized Acquisition Record are prepared from Original Acquisition Records reflecting Total Jitter and from an existing description of DDJ. Removal of timing DDJ alters the locations of edges associated with data events. Voltage DDJ adjusts the asserted voltage in the central portion of a Unit Interval. One technique for equalizing timing jitter variably interpolates along the existing Original Acquisition Record to discover plausible new voltage values to assign to existing sample locations along the time axis. Another technique construes the desired amount of correction for each data event as an impulse that is applied to a Finite Impulse Response Filter whose output is a Voltage Correction Waveform having a smoothed voltage excursion. Time variant voltage values output from the Finite Impulse Response Filter are collected into a Voltage Correction Waveform Record having entry times found in the Original Acquisition Record. An entry by entry addition of these two Records produces the Equalized Acquisition Record.

摘要翻译： 平均收购记录由原始收购记录反映总计抖动和DDJ的现有描述编制。 删除定时DDJ会更改与数据事件相关联的边沿的位置。 电压DDJ调整单位间隔中央部分的有效电压。 用于均衡时序抖动的一种技术可以沿现有的原始采集记录进行可变内插，以发现可能的新电压值，以分配给沿着时间轴的现有采样位置。 另一种技术将每个数据事件的期望量的校正结果作为施加到有限脉冲响应滤波器的脉冲，其输出是具有平滑电压偏移的电压校正波形。 从有限脉冲响应滤波器输出的时变电压值被收集到具有原始采集记录中的入口时间的电压校正波形记录中。 这两个记录的条目添加条目产生均衡收购记录。

公开(公告)号：US20060182205A1

公开(公告)日：2006-08-17

申请号：US11059007

申请日：2005-02-16

申请人： Steven Draving ,  Allen Montijo

发明人： Steven Draving ,  Allen Montijo

IPC分类号： H03D1/04

CPC分类号： G11B20/10046 ,  G11B20/10009

摘要： Equalized Acquisition Record are prepared from Original Acquisition Records reflecting Total Jitter and from an existing description of DDJ. Removal of timing DDJ alters the locations of edges associated with data events. Voltage DDJ adjusts the asserted voltage in the central portion of a Unit Interval. One technique for equalizing timing jitter variably interpolates along the existing Original Acquisition Record to discover plausible new voltage values to assign to existing sample locations along the time axis. Another technique construes the desired amount of correction for each data event as an impulse that is applied to a Finite Impulse Response Filter whose output is a Voltage Correction Waveform having a smoothed voltage excursion. Time variant voltage values output from the Finite Impulse Response Filter are collected into a Voltage Correction Waveform Record having entry times found in the Original Acquisition Record. An entry by entry addition of these two Records produces the Equalized Acquisition Record.