专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US08650010B2 Apparatus and method for generating a test signal with emulated crosstalk 有权
标题翻译：用于产生具有仿真串扰的测试信号的装置和方法
公开(公告)号：US08650010B2
公开(公告)日：2014-02-11
申请号：US12958207
申请日：2010-12-01
申请人： Parthasarathy Raju M , Sampathkumar R. Desai , John J. Pickerd
发明人： Parthasarathy Raju M , Sampathkumar R. Desai , John J. Pickerd
IPC分类号： G06F17/50
CPC分类号： G06F11/24 , G01R27/32 , G01R31/31709
摘要： A signal generator produces a victim signal having crosstalk emulation by filtering and combining a victim signal waveform record file and an aggressor signal waveform record file generated using parameters selected by a user. A signal channel or a cascaded signal channel is characterized using one or more S-parameter arrays. The S-parameter array or arrays represent a mixed-mode multiple-port device under test. Coefficients of a NEXT filter, a FEXT filter and a forward transmission filter are derived from selected S-parameters of the S-parameter array. The aggressor signal is filtered individually by the NEXT and FEXT filters. The victim signal is summed with the filtered aggressor signal from the NEXT filter with the resulting summed signal being filtered by the forward transmission filter. The filtered signal from the forward transmission filter is summed with the filtered aggressor signal from the FEXT filter to generate a victim signal having crosstalk emulation.
摘要翻译：信号发生器通过滤波和组合受害信号波形记录文件和使用由用户选择的参数生成的侵略者信号波形记录文件来产生具有串扰仿真的受害者信号。使用一个或多个S参数阵列来表征信号信道或级联信号信道。 S参数阵列或阵列表示被测试的混合模式多端口设备。从S参数阵列的选择的S参数导出NEXT滤波器，FEXT滤波器和正向传输滤波器的系数。攻击者信号由NEXT和FEXT过滤器单独过滤。受害者信号与来自NEXT滤波器的经滤波的入侵者信号相加，所得到的求和信号被正向传输滤波器滤波。来自正向传输滤波器的经滤波的信号与来自FEXT滤波器的经滤波的入侵者信号相加，以产生具有串扰仿真的受害信号。

2. 发明申请

US20130093493A1 ARBITRARY MULTIBAND OVERLAY MIXER APPARATUS ANDMETHOD FOR BANDWIDTH MULTIPLICATION 有权
标题翻译：仲裁多重混合器装置和方法用于带宽乘法
公开(公告)号：US20130093493A1
公开(公告)日：2013-04-18
申请号：US13271923
申请日：2011-10-12
申请人： John J. PICKERD , Kan TAN
发明人： John J. PICKERD , Kan TAN
IPC分类号： G06G7/14
CPC分类号： G01R13/0218 , G01R13/0236 , G01R13/0272 , G01R19/2506
摘要： An apparatus and method for splitting a wide band input signal and overlaying multiple frequency bands on each path associated with one or more digitizers. All frequencies from the split signal on each path can be fed to a mixer. The local oscillator of each mixer receives a sum of signals, which can each be set to any arbitrary frequency, as long as an associated matrix determinant of coefficients is non-zero. Each oscillator signal is multiplied by a coefficient, which can represent phase and magnitude, prior to summing the oscillator signals together. Each mixer mixes a combined signal with the input, thereby generating a set of multiple overlaid frequency bands. The digitized signals are processed to substantially reconstruct the original input signal. Thus, the wide band input signal is digitized using multiple individual digitizers. In particular, a system can support two wide band signals using four digitizers of narrower bandwidth.
摘要翻译：一种用于分割宽带输入信号并在与一个或多个数字化仪相关联的每个路径上重叠多个频带的装置和方法。来自每个路径上的分割信号的所有频率可以馈送到混频器。每个混合器的本地振荡器接收信号总和，其可以被设置为任何任意频率，只要系数的相关联的矩阵行列式不为零。在将振荡器信号相加在一起之前，每个振荡器信号乘以可表示相位和幅度的系数。每个混合器将组合的信号与输入混合，从而生成一组多个重叠的频带。处理数字化信号以基本上重建原始输入信号。因此，使用多个单独的数字化仪将宽带输入信号数字化。特别地，系统可以使用具有较窄带宽的四个数字化仪来支持两个宽带信号。

3. 发明授权

US07460983B2 Signal analysis system and calibration method 有权
标题翻译：信号分析系统和校准方法
公开(公告)号：US07460983B2
公开(公告)日：2008-12-02
申请号：US11508460
申请日：2006-08-23
申请人： John J. Pickerd , Kan Tan , William A. Hagerup , Rolf P. Anderson , Sharon M. Mc Masters
发明人： John J. Pickerd , Kan Tan , William A. Hagerup , Rolf P. Anderson , Sharon M. Mc Masters
IPC分类号： G06F19/00 , G06F17/40
CPC分类号： G01R35/005 , G01R1/24 , G01R31/3191 , G01R35/002
摘要： A method and apparatus adapted to calibrate a signal path of a signal analysis system such that loading effects of the system are substantially removed from measurements of a device under test. A signal under test from the device under test is coupled to a test probe in the signal path and used with selectable impedance loads in the test probe to characterize transfer parameters of the device under test. An equalization filter in either the frequency or time domain is computed from the device under test transfer parameters for reducing in signal error attributable to the measurement loading of the device under test.
摘要翻译：一种适于校准信号分析系统的信号路径的方法和装置，使得系统的加载效应基本上从被测设备的测量中移除。来自被测器件的被测信号被耦合到信号路径中的测试探头，并与测试探头中的可选阻抗负载一起使用，以表征被测器件的传输参数。频率或时域中的均衡滤波器由被测器件的传输参数计算，用于减少归因于被测器件测量负载的信号误差。

4. 发明申请

US20080082278A1 Realtime spectrum trigger system on realtime oscilloscope 失效
标题翻译：实时频谱触发系统实时示波器
公开(公告)号：US20080082278A1
公开(公告)日：2008-04-03
申请号：US11529855
申请日：2006-09-28
申请人： Kan Tan , John J. Pickerd
发明人： Kan Tan , John J. Pickerd
IPC分类号： G06F19/00
CPC分类号： G01R13/0254 , G01R23/16
摘要： A realtime spectrum trigger system on a realtime oscilloscope considers both the magnitude and phase of an input signal having a periodic component so that successive acquisitions of the input signal are time aligned. A user inputs a frequency, threshold and phase for triggering on the periodic component. Input signal samples are filtered by quadrature filters according to the frequency input to produce quadrature signal components. The square of the magnitude of the input signal is computed from the quadrature signal components, as well as the phase ratio and sign, for comparison with calculated values. When enabled by the magnitude of the input signal, a phase crossing determinator compares the phase ratio and sign with calculated values to determine the phase crossing to generate a trigger, resulting in successive acquisitions of the input signal being in time alignment.
摘要翻译：实时示波器上的实时频谱触发系统考虑具有周期分量的输入信号的幅度和相位，使得输入信号的连续采集是时间对准的。用户输入频率，阈值和相位以在周期性分量上触发。输入信号样本根据频率输入由正交滤波器滤波，产生正交信号分量。根据正交信号分量计算输入信号幅度的平方以及相位比和符号，以便与计算值进行比较。当通过输入信号的幅度使能时，相位越过判定器将相位比和符号与计算值进行比较，以确定相位交叉以产生触发，从而导致输入信号在时间上对准的连续采集。

5. 发明授权

US06748335B2 Acquisition system for a multi-channel relatively long record length digital storage oscilloscope 失效
标题翻译：多通道采集系统相对较长的记录长度数字存储示波器
公开(公告)号：US06748335B2
公开(公告)日：2004-06-08
申请号：US10140790
申请日：2002-05-06
申请人： John J. Pickerd
发明人： John J. Pickerd
IPC分类号： G06F1900
CPC分类号： G01R13/029 , G01R13/0254 , G01R31/3177
摘要： A real time multi-channel digital storage oscilloscope acquires a relatively long data record for each channel in an acquisition memory and processes the data of the relatively long data record to search for predetermined events. Upon detection of such a predetermined event, circuitry generates an event detect signal, and data comprising an acquisition frame surrounding the event is applied to a waveform processing and display system. The relatively long data record can be replayed in order to perform additional searches throughout the data record using different search criteria, thereby permitting multiple waveforms to be displayed simultaneously, each being captured as a result of a different user-defined event. A screen display may be programmed to display a different kind of event such as Runt signal, Overshoot, or Pulsewidth Violation in each waveform, or to display multiple occurrences of the same kind of event such as Runt signal in each waveform. The multiple waveforms of the screen display may be derived from a single channel or from different channels.
摘要翻译：实时多通道数字存储示波器为采集存储器中的每个通道获取相对较长的数据记录，并处理较长数据记录的数据以搜索预定事件。在检测到这样的预定事件时，电路产生事件检测信号，并且将包括事件的采集帧的数据应用于波形处理和显示系统。可以重放相对长的数据记录，以便使用不同的搜索标准在整个数据记录中执行附加搜索，从而允许同时显示多个波形，每个波形作为不同的用户定义的事件的结果被捕获。屏幕显示可以被编程以在每个波形中显示不同类型的事件，例如Runt信号，过冲或脉冲宽度违例，或者显示出每个波形中相同类型事件（例如Runt信号）的多次出现。屏幕显示的多个波形可以从单个频道或从不同的频道导出。

6. 发明申请

US20110093225A1 METHOD OF MAKING FREQUENCY DOMAIN MEASUREMENTS ON A TIME DOMAIN INSTRUMENT 审中-公开
标题翻译：在时域仪表上制作频域测量的方法
公开(公告)号：US20110093225A1
公开(公告)日：2011-04-21
申请号：US12821565
申请日：2010-06-23
申请人： P. E. RAMESH , John J. Pickerd
发明人： P. E. RAMESH , John J. Pickerd
IPC分类号： G01R13/02
CPC分类号： G01R13/029 , G01R23/16
摘要： A system and method of making frequency domain measurements on a waveform acquired by a time domain instrument, such as an oscilloscope, uses built-in FFT spectral analysis in the time domain instrument so that a user can perform the compliance measurements using the oscilloscope alone. The results of the measurement made by the oscilloscope are made comparable to those made by a spectral analyzer by improving dynamic range, noise floor, and measurement accuracy, by averaging on the time domain oscilloscope.
摘要翻译：对诸如示波器等时域仪器采集的波形进行频域测量的系统和方法在时域仪器中使用内置的FFT频谱分析，以便用户可以单独使用示波器执行合规测量。通过在时域示波器上进行平均，通过提高动态范围，本底噪声和测量精度，使示波器进行的测量结果与频谱分析仪的测量结果相当。

7. 发明申请

US20080048674A1 Signal analysis system and calibration method for processing acquires signal samples with an arbitrary load 有权
标题翻译：用于处理的信号分析系统和校准方法以任意负载获取信号样本
公开(公告)号：US20080048674A1
公开(公告)日：2008-02-28
申请号：US11508697
申请日：2006-08-23
申请人： Kan Tan , John J. Pickerd
发明人： Kan Tan , John J. Pickerd
IPC分类号： G01R35/00 , G01R27/04
CPC分类号： G01R35/005 , G01R27/04
摘要： A method and apparatus adapted to calibrate a signal path of a signal analysis system such that digital samples acquired by the system are processed for representing an arbitrary impedance loading of the device under test. The method and apparatus calibrates the signal path to characterize transfer parameters of the device under test within a spectral domain. A reflection coefficient (FL) is defined representative of an arbitrary impedance load coupled to the device under test and an equalization filter is computed to represent the loading of the device under test by the arbitrary impedance. Additional digital samples are acquired using the equalization filter to effect thereby a representation of the arbitrary impedance loading of the device under test.
摘要翻译：一种适于校准信号分析系统的信号路径的方法和装置，使得由系统获取的数字样本被处理以表示被测器件的任意阻抗负载。该方法和装置校准信号路径以表征在频谱域内被测器件的传输参数。定义反射系数（FL）代表耦合到被测器件的任意阻抗负载，并且计算均衡滤波器以表示被任意阻抗测试的器件的负载。使用均衡滤波器获取附加的数字样本，从而实现被测器件的任意阻抗负载的表示。

8. 发明授权

US07254498B2 Method and apparatus for providing bandwidth extension and channel match for oscilloscopes 失效
标题翻译：为示波器提供带宽扩展和通道匹配的方法和设备
公开(公告)号：US07254498B2
公开(公告)日：2007-08-07
申请号：US10686412
申请日：2003-10-14
申请人： John J. Pickerd , Marvin E. La Voie , Rolf Anderson
发明人： John J. Pickerd , Marvin E. La Voie , Rolf Anderson
IPC分类号： G06F19/00
CPC分类号： G01R13/0272
摘要： A method and apparatus for selectively providing bandwidth extension and channel matching for acquired signals under test (SUT). The method and apparatus includes a signal acquisition device for acquiring a signal under test (SUT) and generating therefrom a stream of acquired samples, where the signal acquisition device having associated with it a first bandwidth defining a nominal pass band. At least one digital filter imparts a gain equalization function to the acquired SUT samples within a spectral region including and extending beyond the nominal passband. A controller generates a display signal suitable for use by a display device, where the display signal representing waveform imagery associated with the gain equalized SUT.
摘要翻译：一种用于选择性地提供被测信号（SUT）的带宽扩展和信道匹配的方法和装置。所述方法和装置包括用于获取被测信号（SUT）并由此生成获取样本流的信号采集装置，其中所述信号采集装置与其相关联具有限定标称通带的第一带宽。至少一个数字滤波器对包括并超出标称通带的频谱区域内的所获取的SUT样本赋予增益均衡功能。控制器产生适合于由显示装置使用的显示信号，其中表示与增益相等的SUT相关联的波形图像的显示信号。

9. 发明授权

US06895349B2 Gate comparator 失效
标题翻译：门比较器
公开(公告)号：US06895349B2
公开(公告)日：2005-05-17
申请号：US10008938
申请日：2001-11-08
申请人： John J. Pickerd , Paul H. Buckle
发明人： John J. Pickerd , Paul H. Buckle
IPC分类号： G01R13/20 , G01R13/34 , G06F19/00
CPC分类号： G01R13/345
摘要： A gate comparator control panel, in accordance with the subject invention, allows a user to define up to four different gate regions that may exist on any of the live waveforms, maths waveforms, or REF waveforms. A menu for each gate controls the position of each gate and selects the source for the signal that is to be gated. All gates must be the same width. A high level application copies the gated region of a waveform into a REF memory. For example, Gate 1 would go into REF 1, gate 2 into REF2 and so on. A user-settable tolerance value is used to determine if difference between the waveforms of the gates reaches a point at which a violation is indicated. A master gate position control causes all gates to move by the same amount, thus maintaining a constant distance between them. A master gate width control causes all gates to change width. Run, pause, and stop menu items are used to control how the gates automatically scan though the waveforms to which they are attached while maintaining constant spacing between them. A comparison is performed on a point-by-point basis between the signals of the gates.
摘要翻译：根据本发明的门控比较器控制面板允许用户定义可存在于任何有功波形，数学波形或REF波形上的多达四个不同的栅极区域。每个门的菜单控制每个门的位置，并选择要门控的信号的源。所有门必须是相同的宽度。高级应用程序将波形的门控区域复制到REF存储器中。例如，门1将进入REF 1，门2进入REF 2，依此类推。用户可设置的公差值用于确定门的波形之间的差是否达到指示违规的点。主门位置控制使所有门移动相同的量，从而保持它们之间的恒定距离。主门宽度控制使所有门改变宽度。运行，暂停和停止菜单项用于控制门如何自动扫描它们所连接的波形，同时保持它们之间的恒定间隔。在门的信号之间逐点进行比较。

10. 发明授权

US06807496B2 Acquisition system for a long record length digital storage oscilloscope 失效
标题翻译：采集系统用于长记录长度数字存储示波器
公开(公告)号：US06807496B2
公开(公告)日：2004-10-19
申请号：US10139012
申请日：2002-05-02
申请人： John J. Pickerd
发明人： John J. Pickerd
IPC分类号： G01R1302
CPC分类号： G01R13/345 , G01R13/28
摘要： A real time digital storage oscilloscope acquires a long data record in an acquisition memory and processes the data of the long data record to search for predetermined events. Upon detection of such a predetermined event, circuitry generates an event detect signal, and data comprising an acquisition frame surrounding the event is applied to a waveform processing and display system. The long data record can be replayed in order to perform additional searches throughout the data record using different search criteria, thereby permitting multiple waveforms to be displayed simultaneously, each being captured as a result of a different user-defined event. A screen display may be programmed to display a different kind of event such as Runt signal, Overshoot, or Pulsewidth Violation in each waveform, or to display multiple occurrences of the same kind of event such as Runt signal in each waveform.
摘要翻译：实时数字存储示波器在采集存储器中获取长数据记录，并处理长数据记录的数据以搜索预定事件。在检测到这样的预定事件时，电路产生事件检测信号，并且将包括事件的采集帧的数据应用于波形处理和显示系统。可以重播长数据记录，以便使用不同的搜索条件在整个数据记录中执行附加搜索，从而允许同时显示多个波形，每个波形作为不同的用户定义事件的结果被捕获。屏幕显示可以被编程以在每个波形中显示不同类型的事件，例如Runt信号，过冲或脉冲宽度违例，或者显示出每个波形中相同类型事件（例如Runt信号）的多次出现。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式