公开(公告)号：US20060212239A1

公开(公告)日：2006-09-21

申请号：US10961445

申请日：2005-03-18

申请人： Peter Letts ,  Kenneth Dobyns ,  Paul Gerlach ,  Kristie Veith

发明人： Peter Letts ,  Kenneth Dobyns ,  Paul Gerlach ,  Kristie Veith

IPC分类号： G06F19/00

CPC分类号： G01R13/029

摘要： A method of characterizing a newly acquired waveform with respect to previously acquired waveforms during monitoring of a generally repetitive signal, where the previously acquired waveforms have been rasterized into a two-dimensional array of memory locations, reads history values for those memory locations associated with an active portion of the newly acquired waveform, compares the history values with history value ranges, increments a count for one of a plurality of recent pixel counters corresponding to the history value ranges, each counter having a different history value range, and modifies the history values in the memory locations. From the counts accumulated for each of the history value ranges the variability of the newly acquired waveform from the generally repetitive signal is determined.

摘要翻译： 在先前获取的波形已经被光栅化成二维存储器阵列的情况下，在监视一般重复的信号期间，相对于先前获取的波形来表征新采集的波形的方法，读取与 将历史值与历史值范围进行比较，对与历史值范围对应的多个最近的像素计数器中的一个像素计数器进行计数，每个计数器具有不同的历史值范围，并修改历史值 在内存位置。 根据历史值范围中的每一个积累的计数，确定从一般重复信号得到的新采集的波形的变化性。

公开(公告)号：US20070217694A1

公开(公告)日：2007-09-20

申请号：US11385170

申请日：2006-03-20

申请人： Steven Sullivan ,  Paul Gerlach ,  Kristie Veith ,  Kenneth Dobyns

发明人： Steven Sullivan ,  Paul Gerlach ,  Kristie Veith ,  Kenneth Dobyns

IPC分类号： G06K9/36

CPC分类号： G01R13/0272

摘要： A waveform compression and display technique saves both a peak detected version (background version) and a decimated/lowpass filtered version (foreground version) of a sampled electrical signal. The two versions are displayed simultaneously overlaid together in a contrasting manner so as not to obscure information contained in either of them. The lowpass filtered version uses a series of simple lowpass filters with decimation to produce a single data stream from a plurality of data streams derived from the sampled electrical signal. The single data stream may then be subjected to additional filtering, such as a cascaded integrator-comb filter, to obtain a desired frequency bandwidth. When displayed, the peak detect pixels adjacent the decimated/lowpass filtered pixels may be adjusted in intensity so that the low frequency information of the lowpass filtered waveform is not lost, while the peak detect pixels further from the lowpass filtered pixels are intensified to highlight the high frequency information. Alternatively the background version intensity may be controlled by a user control over a first range from zero to a predetermined maximum, and the foreground version may be controlled over a second range from a default intensity to a maximum, saturated intensity.

摘要翻译： 波形压缩和显示技术节省了采样电信号的峰值检测版本（背景版本）和抽取/低通滤波版本（前景版本）。 这两个版本以对比的方式同时叠加在一起，以免遮蔽其中任何一个中的信息。 低通滤波器版本使用一系列具有抽取的简单低通滤波器，以从采样的电信号导出的多个数据流产生单个数据流。 然后可以对单个数据流进行额外的滤波，例如级联的积分器梳状滤波器，以获得期望的频率带宽。 当显示时，与抽取/低通滤波的像素相邻的峰值检测像素的强度可以被调整，使得低通滤波波形的低频信息不会丢失，而从低通滤波像素进一步增加峰值，从而突出显示 高频信息。 或者，背景版本强度可以由用户在从零到预定最大值的范围内的控制来控制，并且可以在从默认强度到最大饱和强度的第二范围内控制前景版本。

公开(公告)号：US07834780B2

公开(公告)日：2010-11-16

申请号：US11385170

申请日：2006-03-20

申请人： Steven K. Sullivan ,  Paul M. Gerlach ,  Kristie Veith ,  Kenneth P. Dobyns

发明人： Steven K. Sullivan ,  Paul M. Gerlach ,  Kristie Veith ,  Kenneth P. Dobyns

IPC分类号： H03M7/00

CPC分类号： G01R13/0272

摘要： A waveform compression and display technique saves both a peak detected version (background version) and a decimated/lowpass filtered version (foreground version) of a sampled electrical signal. The two versions are displayed simultaneously overlaid together in a contrasting manner so as not to obscure information contained in either of them. The lowpass filtered version uses a series of simple lowpass filters with decimation to produce a single data stream from a plurality of data streams derived from the sampled electrical signal. The single data stream may then be subjected to additional filtering, such as a cascaded integrator-comb filter, to obtain a desired frequency bandwidth. When displayed, the peak detect pixels adjacent the decimated/lowpass filtered pixels may be adjusted in intensity so that the low frequency information of the lowpass filtered waveform is not lost, while the peak detect pixels further from the lowpass filtered pixels are intensified to highlight the high frequency information. Alternatively the background version intensity may be controlled by a user control over a first range from zero to a predetermined maximum, and the foreground version may be controlled over a second range from a default intensity to a maximum, saturated intensity.

摘要翻译： 波形压缩和显示技术节省了采样电信号的峰值检测版本（背景版本）和抽取/低通滤波版本（前景版本）。 这两个版本以对比的方式同时叠加在一起，以免遮蔽其中任何一个中的信息。 低通滤波器版本使用一系列具有抽取的简单低通滤波器，以从采样的电信号导出的多个数据流产生单个数据流。 然后可以对单个数据流进行额外的滤波，例如级联的积分器梳状滤波器，以获得期望的频率带宽。 当显示时，与抽取/低通滤波的像素相邻的峰值检测像素的强度可以被调整，使得低通滤波波形的低频信息不会丢失，而从低通滤波像素进一步增加峰值，从而突出显示 高频信息。 或者，背景版本强度可以由用户在从零到预定最大值的范围内的控制来控制，并且可以在从默认强度到最大饱和强度的第二范围内控制前景版本。

公开(公告)号：US07652465B2

公开(公告)日：2010-01-26

申请号：US11388428

申请日：2006-03-24

申请人： Steven K. Sullivan ,  Terrance R. Beale ,  Kristie Veith

发明人： Steven K. Sullivan ,  Terrance R. Beale ,  Kristie Veith

IPC分类号： G01R13/20

CPC分类号： G01R13/0254

摘要： A “no dead time” data acquisition system for a measurement instrument receives a digitized signal representing an electrical signal being monitored and generates from the digitized signal a trigger signal using a fast digital trigger circuit, the trigger signal including all trigger events within the digitized signal. The digitized signal is compressed as desired and delayed by a first-in, first-out (FIFO) buffer for a period of time to assure a predetermined amount of data prior to a first trigger event in the trigger signal. The delayed digitized signal is delivered to a fast rasterizer or drawing engine upon the occurrence of the first trigger event to generate a waveform image. The waveform image is then provided to a display buffer for combination with prior waveforms and/or other graphic inputs from other drawing engines. The contents of the display buffer are provided to a display at a display update rate to show a composite of all waveform images representing the electrical signal.

摘要翻译： 用于测量仪器的“无死区时间”数据采集系统接收表示正在监视的电信号的数字化信号，并且使用快速数字触发电路从数字化信号产生触发信号，触发信号包括数字化信号内的所有触发事件 。 数字化信号根据需要被压缩并且由先入先出（FIFO）缓冲器延迟一段时间，以确保在触发信号中的第一触发事件之前的预定量的数据。 延迟数字化信号在发生第一触发事件时被传送到快速光栅化器或绘图引擎以产生波形图像。 然后将波形图像提供给显示缓冲器，以与来自其它绘图引擎的先前波形和/或其他图形输入组合。 以显示更新率将显示缓冲器的内容提供给显示器，以显示表示电信号的所有波形图像的合成。

公开(公告)号：US07610178B2

公开(公告)日：2009-10-27

申请号：US11781432

申请日：2007-07-23

申请人： Kristie Veith ,  Kenneth P. Dobyns ,  Terrance R. Beale

发明人： Kristie Veith ,  Kenneth P. Dobyns ,  Terrance R. Beale

IPC分类号： H04B15/00 ,  G01R19/00

CPC分类号： G01R13/0254

摘要： A noise rejection filter for a trigger circuit uses an algorithm that updates the filter output monotonically so long as the signal slope remains unchanged, maintains the filter output at a constant level when the signal slope changes but the difference between the sample value and the filter output is less than or equal to a hysteresis value, and changes the signal slope while updating the filter output when the difference is greater than the hysteresis value. This maintains the peaks of the input signal at the filter output. The noise rejection filter may be used in a trigger circuit prior to a comparator so that the trigger signal from the comparator accurately reflects the signal pulse width at a desired trigger level and trigger events are detected when the desired trigger level is near the peaks of the input signal.

摘要翻译： 用于触发电路的噪声抑制滤波器使用仅当信号斜率保持不变时单调更新滤波器输出的算法，当信号斜率改变时，将滤波器输出保持在恒定电平，而采样值与滤波器输出之间的差异 小于或等于滞后值，并且当差值大于滞后值时，更新滤波器输出时改变信号斜率。 这保持了滤波器输出处的输入信号的峰值。 噪声抑制滤波器可以在比较器之前的触发电路中使用，使得来自比较器的触发信号精确地将信号脉冲宽度反映到期望的触发电平，并且当期望的触发电平接近峰值时检测触发事件 输入信号。

公开(公告)号：US20080177508A1

公开(公告)日：2008-07-24

申请号：US11781432

申请日：2007-07-23

申请人： Kristie Veith ,  Kenneth P. Dobyns ,  Terrance R. Beale

发明人： Kristie Veith ,  Kenneth P. Dobyns ,  Terrance R. Beale

IPC分类号： H04B15/00

CPC分类号： G01R13/0254

摘要： A noise rejection filter for a trigger circuit uses an algorithm that updates the filter output monotonically so long as the signal slope remains unchanged, maintains the filter output at a constant level when the signal slope changes but the difference between the sample value and the filter output is less than or equal to a hysteresis value, and changes the signal slope while updating the filter output when the difference is greater than the hysteresis value. This maintains the peaks of the input signal at the filter output. The noise rejection filter may be used in a trigger circuit prior to a comparator so that the trigger signal from the comparator accurately reflects the signal pulse width at a desired trigger level and trigger events are detected when the desired trigger level is near the peaks of the input signal.

摘要翻译： 用于触发电路的噪声抑制滤波器使用仅当信号斜率保持不变时单调更新滤波器输出的算法，当信号斜率改变时，将滤波器输出保持在恒定电平，而采样值与滤波器输出之间的差异 小于或等于滞后值，并且当差值大于滞后值时，更新滤波器输出时改变信号斜率。 这保持了滤波器输出处的输入信号的峰值。 噪声抑制滤波器可以在比较器之前的触发电路中使用，使得来自比较器的触发信号精确地将信号脉冲宽度反映到期望的触发电平，并且当期望的触发电平接近峰值时检测触发事件 输入信号。

公开(公告)号：US20070222429A1

公开(公告)日：2007-09-27

申请号：US11388428

申请日：2006-03-24

申请人： Steven Sullivan ,  Terrance Beale ,  Kristie Veith

发明人： Steven Sullivan ,  Terrance Beale ,  Kristie Veith

IPC分类号： G01R13/14

CPC分类号： G01R13/0254

摘要： A “no dead time” data acquisition system for a measurement instrument receives a digitized signal representing an electrical signal being monitored and generates from the digitized signal a trigger signal using a fast digital trigger circuit, the trigger signal including all trigger events within the digitized signal. The digitized signal is compressed as desired and delayed by a first-in, first-out (FIFO) buffer for a period of time to assure a predetermined amount of data prior to a first trigger event in the trigger signal. The delayed digitized signal is delivered to a fast rasterizer or drawing engine upon the occurrence of the first trigger event to generate a waveform image. The waveform image is then provided to a display buffer for combination with prior waveforms and/or other graphic inputs from other drawing engines. The contents of the display buffer are provided to a display at a display update rate to show a composite of all waveform images representing the electrical signal.

摘要翻译： 用于测量仪器的“无死区时间”数据采集系统接收表示正在监视的电信号的数字化信号，并且使用快速数字触发电路从数字化信号产生触发信号，触发信号包括数字化信号内的所有触发事件 。 数字化信号根据需要被压缩并且由先入先出（FIFO）缓冲器延迟一段时间，以确保在触发信号中的第一触发事件之前的预定量的数据。 延迟数字化信号在发生第一触发事件时被传送到快速光栅化器或绘图引擎以产生波形图像。 然后将波形图像提供给显示缓冲器，以与来自其它绘图引擎的先前波形和/或其他图形输入组合。 以显示更新率将显示缓冲器的内容提供给显示器，以显示表示电信号的所有波形图像的合成。

公开(公告)号：US07359810B2

公开(公告)日：2008-04-15

申请号：US10961445

申请日：2005-03-18

申请人： Peter J. Letts ,  Kenneth P. Dobyns ,  Paul M. Gerlach ,  Kristie Veith

发明人： Peter J. Letts ,  Kenneth P. Dobyns ,  Paul M. Gerlach ,  Kristie Veith

IPC分类号： G01R13/00

CPC分类号： G01R13/029

摘要： A method of characterizing a newly acquired waveform with respect to previously acquired waveforms during monitoring of a generally repetitive signal, where the previously acquired waveforms have been rasterized into a two-dimensional array of memory locations, reads history values for those memory locations associated with an active portion of the newly acquired waveform, compares the history values with history value ranges, increments a count for one of a plurality of recent pixel counters corresponding to the history value ranges, each counter having a different history value range, and modifies the history values in the memory locations. From the counts accumulated for each of the history value ranges the variability of the newly acquired waveform from the generally repetitive signal is determined.

摘要翻译： 在先前获取的波形已经被光栅化成二维存储器阵列的情况下，在监视一般重复的信号期间，相对于先前获取的波形来表征新采集的波形的方法，读取与 将历史值与历史值范围进行比较，对与历史值范围对应的多个最近的像素计数器中的一个像素计数器进行计数，每个计数器具有不同的历史值范围，并修改历史值 在内存位置。 根据历史值范围中的每一个积累的计数，确定从一般重复信号得到的新采集的波形的变化性。

公开(公告)号：US07352167B2

公开(公告)日：2008-04-01

申请号：US11388925

申请日：2006-03-24

申请人： Steven K. Sullivan ,  Kristie Veith ,  Terrance R. Beale

发明人： Steven K. Sullivan ,  Kristie Veith ,  Terrance R. Beale

IPC分类号： G01R13/20

CPC分类号： G01R13/0254

摘要： An improved digital trigger circuit has a plurality of data samples extracted from an input electrical signal for each sample clock cycle. The plurality of data samples are compared in parallel with a high threshold level and a low threshold level which provides hysteresis for noise rejection. Also the plurality of data samples are used to determine sub-sample trigger positioning. The comparison outputs are input to a digital trigger logic circuit for identifying a selected trigger event and generating a trigger for the acquisition of data from the input electrical signal for analysis and display. The digital trigger logic provides edge event triggering, pulse width triggering and transition time triggering, among others.

摘要翻译： 改进的数字触发电路具有从每个采样时钟周期的输入电信号提取的多个数据样本。 将多个数据样本并行地与高阈值电平和低阈值电平进行比较，其提供用于噪声抑制的滞后。 此外，多个数据样本用于确定子采样触发定位。 比较输出被输入到数字触发逻辑电路，用于识别所选择的触发事件并产生用于从输入电信号中采集数据的触发用于分析和显示。 数字触发逻辑提供边缘事件触发，脉冲宽度触发和转换时间触发等。

公开(公告)号：US20070222430A1

公开(公告)日：2007-09-27

申请号：US11388925

申请日：2006-03-24

申请人： Steven Sullivan ,  Kristie Veith ,  Terrance Beale

发明人： Steven Sullivan ,  Kristie Veith ,  Terrance Beale

IPC分类号： G01R13/14 ,  G01R13/34

CPC分类号： G01R13/0254

摘要： An improved digital trigger circuit has a plurality of data samples extracted from an input electrical signal for each sample clock cycle. The plurality of data samples are compared in parallel with a high threshold level and a low threshold level which provides hysteresis for noise rejection. Also the plurality of data samples are used to determine sub-sample trigger positioning. The comparison outputs are input to a digital trigger logic circuit for identifying a selected trigger event and generating a trigger for the acquisition of data from the input electrical signal for analysis and display. The digital trigger logic provides edge event triggering, pulse width triggering and transition time triggering, among others.

摘要翻译： 改进的数字触发电路具有从每个采样时钟周期的输入电信号提取的多个数据样本。 将多个数据样本并行地与高阈值电平和低阈值电平进行比较，其提供用于噪声抑制的滞后。 此外，多个数据样本用于确定子采样触发定位。 比较输出被输入到数字触发逻辑电路，用于识别所选择的触发事件并产生用于从输入电信号中采集数据的触发用于分析和显示。 数字触发逻辑提供边缘事件触发，脉冲宽度触发和转换时间触发等。