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1. 发明申请

US20120109568A1 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：US20120109568A1
公开(公告)日：2012-05-03
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： G06F19/00
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

US20090195498A1 Signal Generator Providing ISI Scaling to Touchstone Files 有权
标题翻译：信号发生器提供ISI缩放到Touchstone文件
公开(公告)号：US20090195498A1
公开(公告)日：2009-08-06
申请号：US12357298
申请日：2009-01-21
申请人： MURALIDHARAN A. KARAPATTU , SAMPATHKUMAR R. DESAI
发明人： MURALIDHARAN A. KARAPATTU , SAMPATHKUMAR R. DESAI
IPC分类号： G09G5/00
CPC分类号： G01R31/31917 , G01R31/31912
摘要： A device and method for producing Inter Symbol Interference (ISI) scaling of S-Parameter Touchstone files for the generation of ISI scaling effects on serial data patterns by direct digital synthesis is described. The features of the present invention allow user to set parameters such as data rate, voltage amplitude, encoding scheme etc. as per requirements for the serial data patterns. An ISI scaling value is selected and applied to an S-Parameter Touchstone file representing transmission path effects. The serial data pattern parameters and the ISI scaling value used with the S-Parameter Touchstone file are compiled to generate a digital data waveform record file. The digital waveform record file is applied to a waveform generation circuit for converting the digital data into an analog serial data pattern with ISI scaling effects.
摘要翻译：描述了用于通过直接数字合成产生对串行数据模式的ISI缩放效果的S参数Touchstone文件的Inter符号干扰（ISI）缩放的装置和方法。本发明的特征允许用户根据串行数据模式的要求来设置数据速率，电压幅度，编码方案等参数。选择ISI缩放值并将其应用于表示传输路径效应的S参数Touchstone文件。串行数据模式参数和与S参数Touchstone文件一起使用的ISI缩放值被编译为生成数字数据波形记录文件。数字波形记录文件被应用于用于将数字数据转换成具有ISI缩放效果的模拟串行数据模式的波形发生电路。

3. 发明申请

US20090195525A1 Signal Generator Producing Intersymbol Interference Effects on Serial Data 有权
标题翻译：信号发生器产生符号间干扰对串行数据的影响
公开(公告)号：US20090195525A1
公开(公告)日：2009-08-06
申请号：US12357291
申请日：2009-01-21
申请人： MURALIDHARAN A. KARAPATTU , SAMPATHKUMAR R. DESAI
发明人： MURALIDHARAN A. KARAPATTU , SAMPATHKUMAR R. DESAI
IPC分类号： G09G5/00
CPC分类号： G01R31/31709
摘要： A device and method for generation of Intersymbol interference (ISI) effects on serial data by direct digital synthesis is described. The features of the present invention allow user to set parameters such as data rate, voltage amplitude, encoding scheme etc. as per requirements. An ISI parameter value is selected and applied to the serial data to produce ISI effects in the serial data. Alternatively according to another feature the patterns may be set as per industry standards.
摘要翻译：描述了通过直接数字合成产生对串行数据的符号间干扰（ISI）影响的装置和方法。本发明的特征允许用户根据需要设置数据速率，电压幅度，编码方案等参数。选择ISI参数值并将其应用于串行数据，以在串行数据中产生ISI效果。或者，根据另一特征，可以按照行业标准来设置图案。

4. 发明授权

US08218611B2 Signal generator providing ISI scaling to touchstone files 有权
标题翻译：信号发生器提供ISI缩放到试金石文件
公开(公告)号：US08218611B2
公开(公告)日：2012-07-10
申请号：US12357298
申请日：2009-01-21
申请人： Sampathkumar R. Desai , Muralidharan A. Karapattu
发明人： Sampathkumar R. Desai , Muralidharan A. Karapattu
IPC分类号： H04B3/46
CPC分类号： G01R31/31917 , G01R31/31912
摘要： A device and method for producing Inter Symbol Interference (ISI) scaling of S-Parameter Touchstone files for the generation of ISI scaling effects on serial data patterns by direct digital synthesis is described. The features of the present invention allow user to set parameters such as data rate, voltage amplitude, encoding scheme etc. as per requirements for the serial data patterns. An ISI scaling value is selected and applied to an S-Parameter Touchstone file representing transmission path effects. The serial data pattern parameters and the ISI scaling value used with the S-Parameter Touchstone file are compiled to generate a digital data waveform record file. The digital waveform record file is applied to a waveform generation circuit for converting the digital data into an analog serial data pattern with ISI scaling effects.
摘要翻译：描述了用于通过直接数字合成产生对串行数据模式的ISI缩放效果的S参数Touchstone文件的Inter符号干扰（ISI）缩放的装置和方法。本发明的特征允许用户根据串行数据模式的要求来设置数据速率，电压幅度，编码方案等参数。选择ISI缩放值并将其应用于表示传输路径效应的S参数Touchstone文件。串行数据模式参数和与S参数Touchstone文件一起使用的ISI缩放值被编译为生成数字数据波形记录文件。数字波形记录文件被应用于用于将数字数据转换成具有ISI缩放效果的模拟串行数据模式的波形发生电路。

5. 发明授权

US08688400B2 Signal generator producing intersymbol interference effects on serial data 有权
标题翻译：信号发生器产生符号间干扰对串行数据的影响
公开(公告)号：US08688400B2
公开(公告)日：2014-04-01
申请号：US12357291
申请日：2009-01-21
申请人： Sampathkumar R. Desai , Muralidharan A. Karapattu
发明人： Sampathkumar R. Desai , Muralidharan A. Karapattu
IPC分类号： G01R29/26 , H04L1/20
CPC分类号： G01R31/31709
摘要： A device and method for generation of Intersymbol interference (ISI) effects on serial data by direct digital synthesis is described. The features of the present invention allow a user to set parameters such as data rate, voltage amplitude, encoding scheme etc. as per requirements. An ISI parameter value is selected and applied to the serial data to produce ISI effects in the serial data. Alternatively according to another feature the patterns may be set as per industry standards.
摘要翻译：描述了通过直接数字合成产生对串行数据的符号间干扰（ISI）影响的装置和方法。本发明的特征允许用户根据需要设置诸如数据速率，电压幅度，编码方案等参数。选择ISI参数值并将其应用于串行数据，以在串行数据中产生ISI效果。或者，根据另一特征，可以按照行业标准来设置图案。

6. 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。

7. 发明申请

US20110235694A1 Apparatus and Method for Generating a Waveform Test Signal Having Crest Factor Emulation of Random Jitter 审中-公开
标题翻译：用于产生具有随机抖动的峰值因数仿真的波形测试信号的装置和方法
公开(公告)号：US20110235694A1
公开(公告)日：2011-09-29
申请号：US12973709
申请日：2010-12-20
申请人： Ransom W. Stephens , Muralidharan Karapattu , Sampathkumar R. Desai , John C. Calvin
发明人： Ransom W. Stephens , Muralidharan Karapattu , Sampathkumar R. Desai , John C. Calvin
IPC分类号： H04B17/00
CPC分类号： G01R31/31709
摘要： A signal generating device has a display and a central processing unit for setting parameters for a serial data pattern and parameters for deterministic and random jitter impairments, and a displacement crest factor emulation impairment to be applied to the serial data pattern. A waveform record file is generated using the serial data pattern parameters, the impairment parameters for the deterministic jitter and random jitter, and the displacement crest factor emulation impairment. The displacement crest factor emulation impairment is selectively positioned in the impaired serial data pattern. A waveform generation circuit receives the waveform record file and generates an impaired serial data pattern analog output signal based on the serial data pattern, deterministic and random jitter impairments, and the displacement crest factor emulation impairment with the displacement crest factor emulation impairment being selectively positioned in the impaired serial data pattern analog output signal.
摘要翻译：信号发生装置具有显示器和中央处理单元，用于设置用于串行数据模式的参数和用于确定性和随机抖动损伤的参数，以及应用于串行数据模式的位移波峰因数仿真损害。使用串行数据模式参数生成波形记录文件，确定性抖动和随机抖动的损伤参数以及位移波峰因数仿真损伤。位移波峰因数仿真损伤有选择地位于受损的串行数据模式中。波形发生电路接收波形记录文件，并基于串行数据模式，确定性和随机抖动损伤产生受损的串行数据模式模拟输出信号，并且位移波峰因数仿真损伤被选择性地定位在受损的串行数据模式模拟输出信号。

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