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公开(公告)号：US20110257953A1
公开(公告)日：2011-10-20
申请号：US12762848
申请日：2010-04-19
IPC分类号： G06F17/50
CPC分类号： G06F17/5009 , G06F17/5036 , G06F2217/10
摘要： A link simulation tool for simulating high-speed communications link systems is provided. Communications links may include link subsystems such as transmit (TX) circuitry, receive (TX) circuitry, oscillator circuits that provide reference clock signals to the TX and RX circuitry, and channels that link the TX and RX circuitry. The link simulation tool may model each of the subsystems using behavioral models. The behavioral models may include characteristic functions such as transfer functions, probability density functions, and eye characteristics. The link simulation tool may have a link analysis engine that is capable of performing two-dimensional (two-variable) convolution operations and in applying dual-domain (frequency-time) transformations on the characteristic functions provided by the behavioral models to simulate the performance of the link system. The link simulation tool may have an input screen that allows a user to specify desired link parameters and a data display screen that display simulated results.
摘要翻译： 提供了一种用于模拟高速通信链路系统的链路仿真工具。 通信链路可以包括链路子系统，例如发射（TX）电路，接收（TX）电路，向TX和RX电路提供参考时钟信号的振荡器电路，以及链接TX和RX电路的信道。 链接仿真工具可以使用行为模型对每个子系统进行建模。 行为模型可以包括特征功能，例如传递函数，概率密度函数和眼睛特征。 链路仿真工具可以具有能够执行二维（双变量）卷积运算并且对由行为模型提供的特征函数应用双域（频率 - 时间）变换以模拟性能的链路分析引擎 的链接系统。 链接仿真工具可以具有允许用户指定期望的链接参数的输入屏幕和显示模拟结果的数据显示屏幕。
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公开(公告)号：US08626474B2
公开(公告)日：2014-01-07
申请号：US12762848
申请日：2010-04-19
CPC分类号： G06F17/5009 , G06F17/5036 , G06F2217/10
摘要： A link simulation tool for simulating high-speed communications link systems is provided. Communications links may include link subsystems such as transmit (TX) circuitry, receive (TX) circuitry, oscillator circuits that provide reference clock signals to the TX and RX circuitry, and channels that link the TX and RX circuitry. The link simulation tool may model each of the subsystems using behavioral models. The behavioral models may include characteristic functions such as transfer functions, probability density functions, and eye characteristics. The link simulation tool may have a link analysis engine that is capable of performing two-dimensional (two-variable) convolution operations and in applying dual-domain (frequency-time) transformations on the characteristic functions provided by the behavioral models to simulate the performance of the link system. The link simulation tool may have an input screen that allows a user to specify desired link parameters and a data display screen that display simulated results.
摘要翻译： 提供了一种用于模拟高速通信链路系统的链路仿真工具。 通信链路可以包括链路子系统，例如发射（TX）电路，接收（TX）电路，向TX和RX电路提供参考时钟信号的振荡器电路，以及链接TX和RX电路的信道。 链接仿真工具可以使用行为模型对每个子系统进行建模。 行为模型可以包括特征功能，例如传递函数，概率密度函数和眼睛特征。 链路仿真工具可以具有能够执行二维（双变量）卷积运算并且对由行为模型提供的特征函数应用双域（频率 - 时间）变换以模拟性能的链路分析引擎 的链接系统。 链接仿真工具可以具有允许用户指定期望的链接参数的输入屏幕和显示模拟结果的数据显示屏幕。
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3.发明授权Circuitry on an integrated circuit for performing or facilitating oscilloscope, jitter, and/or bit-error-rate tester operations 有权用于执行或促进示波器，抖动和/或误码率测试仪操作的集成电路的电路公开(公告)号：US08504882B2
公开(公告)日：2013-08-06
申请号：US12884305
申请日：2010-09-17
申请人： Peng Li , Masashi Shimanouchi , Sergey Shumarayev , Weiqi Ding , Siriram Narayan , Daniel Tun Lai Chow , Mingde Pan
发明人： Peng Li , Masashi Shimanouchi , Sergey Shumarayev , Weiqi Ding , Siriram Narayan , Daniel Tun Lai Chow , Mingde Pan
IPC分类号： G06F11/00
CPC分类号： G06F11/267
摘要： An integrated circuit (“IC”) includes circuitry for use in testing a serial data signal. One such IC includes circuitry for transmitting the serial data signal with optional jitter, optional noise, and/or controllably variable drive strength. One such IC also includes circuitry for receiving the serial data signal and performing a bit error rate (“BER”) analysis in such a signal. Such an IC provides output signals indicative of results of its operations. One such IC operates in various modes to perform or at least emulate functions of an oscilloscope, a bit error rate tester, etc., for testing signals and circuitry with respect to jitter-tolerance, noise-tolerance, etc.
摘要翻译： 集成电路（“IC”）包括用于测试串行数据信号的电路。 一个这样的IC包括用于以可选的抖动，可选的噪声和/或可控地变化的驱动强度来发送串行数据信号的电路。 一个这样的IC还包括用于接收串行数据信号并且在这种信号中执行误码率（“BER”）分析的电路。 这样的IC提供指示其操作结果的输出信号。 一个这样的IC以各种模式运行，以执行或至少模拟示波器，误码率测试仪等的功能，用于测试关于抖动容差，噪声容限等的信号和电路。
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4.发明申请公开(公告)号：US20120072785A1
公开(公告)日：2012-03-22
申请号：US12884923
申请日：2010-09-17
申请人： Weiqi Ding , Mingde Pan , Peng Li , Sergey Shumarayev , Masashi Shimanouchi
发明人： Weiqi Ding , Mingde Pan , Peng Li , Sergey Shumarayev , Masashi Shimanouchi
IPC分类号： G06F11/00
CPC分类号： H04L1/203 , G01R31/3171
摘要： An IC that includes an eye viewer and a BER checker coupled to the eye viewer, where the BER checker receives a serial data signal from the eye viewer, is provided. In one implementation, the BER checker receives the serial data signal from the eye viewer without the serial data signal passing through a deserializer. In one implementation, the BER checker compares the serial data signal against a reference data signal to determine the BER for the serial data signal. In one implementation, the IC includes an IC core coupled to the eye viewer and the BER checker, where the BER checker is outside the IC core. In one implementation, the BER checker is a dedicated BER checker. In one implementation, the BER checker includes an exclusive OR gate, a programmable delay circuit coupled to the exclusive OR gate, and an error counter coupled to the exclusive OR gate.
摘要翻译： 提供了一种IC，其包括耦合到眼睛观察者的眼睛观察器和BER检查器，其中BER检查器从眼睛观察器接收串行数据信号。 在一个实现中，BER检查器从眼睛观察器接收串行数据信号，而不经过串行数据信号通过解串器。 在一个实现中，BER检验器将串行数据信号与参考数据信号进行比较，以确定串行数据信号的BER。 在一个实现中，IC包括耦合到眼睛观察器和BER检查器的IC核心，其中BER检验器在IC核心之外。 在一个实现中，BER检查器是专用的BER检查器。 在一个实现中，BER检查器包括异或门，耦合到异或门的可编程延迟电路和耦合到异或门的错误计数器。
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5.发明申请CIRCUITRY ON AN INTEGRATED CIRCUIT FOR PERFORMING OR FACILITATING OSCILLOSCOPE, JITTER, AND/OR BIT-ERROR-RATE TESTER OPERATIONS 有权用于执行或促进OSCILLOSCOPE，JITTER和/或BIT错误率测试仪操作的集成电路的电路公开(公告)号：US20120072784A1
公开(公告)日：2012-03-22
申请号：US12884305
申请日：2010-09-17
申请人： Peng Li , Masashi Shimanouchi , Sergey Shumarayev , Weiqi Ding , Sriram Narayan , Daniel Tun Lai Chow , Mingde Pan
发明人： Peng Li , Masashi Shimanouchi , Sergey Shumarayev , Weiqi Ding , Sriram Narayan , Daniel Tun Lai Chow , Mingde Pan
IPC分类号： G06F11/00
CPC分类号： G06F11/267
摘要： An integrated circuit (“IC”) may include circuitry for use in testing a serial data signal. The IC may include circuitry for transmitting the serial data signal with optional jitter, optional noise, and/or controllably variable drive strength. The IC may also include circuitry for receiving the serial data signal and performing a bit error rate (“BER”) analysis in such a signal. The IC may provide output signals indicative of results of its operations. The IC can operate in various modes to perform or at least emulate functions of an oscilloscope, a bit error rate tester, etc., for testing signals and circuitry with respect to jitter-tolerance, noise-tolerance, etc.
摘要翻译： 集成电路（“IC”）可以包括用于测试串行数据信号的电路。 IC可以包括用于以可选的抖动，可选的噪声和/或可控地变化的驱动强度发送串行数据信号的电路。 IC还可以包括用于接收串行数据信号并且在这种信号中执行误码率（“BER”）分析的电路。 IC可以提供指示其操作结果的输出信号。 IC可以以各种模式运行，以执行或至少模拟示波器，误码率测试仪等功能，用于在抖动容限，噪声容限等方面测试信号和电路。
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公开(公告)号：US09222972B1
公开(公告)日：2015-12-29
申请号：US12884747
申请日：2010-09-17
申请人： Weiqi Ding , Sergey Shumarayev , Mingde Pan , Peng Li , Masashi Shimanouchi
发明人： Weiqi Ding , Sergey Shumarayev , Mingde Pan , Peng Li , Masashi Shimanouchi
IPC分类号： G01R31/02 , G01R31/317
CPC分类号： G01R31/31709
摘要： An IC that includes a jitter generator, where the jitter generator is integral with the IC and generates non-intrinsic jitter, is provided. In one implementation, the non-intrinsic jitter is used to measure a characteristic of the IC. In one implementation, the non-intrinsic jitter is used to test jitter tolerance of the IC. In yet another implementation, the non-intrinsic jitter is used to test another IC coupled to the IC that includes the jitter generator.
摘要翻译： 提供了包括抖动发生器的IC，其中抖动发生器与IC集成并产生非固有抖动。 在一个实现中，非固有抖动用于测量IC的特性。 在一个实现中，非固有抖动用于测试IC的抖动容限。 在又一实现中，使用非固有抖动来测试耦合到包括抖动发生器的IC的另一IC。
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公开(公告)号：US08750406B2
公开(公告)日：2014-06-10
申请号：US13363098
申请日：2012-01-31
申请人： Mingde Pan , Weiqi Ding , Sergey Shumarayev , Peng Li , Masashi Shimanouchi
发明人： Mingde Pan , Weiqi Ding , Sergey Shumarayev , Peng Li , Masashi Shimanouchi
CPC分类号： H04L25/4917 , H03D1/00 , H04L25/066 , H04L27/06
摘要： One embodiment relates to a receiver circuit for multi-level amplitude signaling which includes at least three amplitude levels for each symbol period. The receiver circuit includes a peak detector, a reference voltage generator, and a comparator circuit. The peak detector is arranged to detect a peak voltage of the multi-level amplitude signal, and the reference voltage generator uses the peak voltage to generate multiple reference voltages. The comparator circuit uses the multiple reference voltages to detect an amplitude level of the multi-level amplitude signal. Other embodiments and features are also disclosed.
摘要翻译： 一个实施例涉及用于多电平振幅信令的接收机电路，其包括用于每个符号周期的至少三个幅度电平。 接收器电路包括峰值检测器，参考电压发生器和比较器电路。 峰值检测器被设置为检测多电平幅度信号的峰值电压，并且参考电压发生器使用峰值电压来产生多个参考电压。 比较器电路使用多个参考电压来检测多电平幅度信号的幅度电平。 还公开了其它实施例和特征。
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8.发明授权公开(公告)号：US08433958B2
公开(公告)日：2013-04-30
申请号：US12884923
申请日：2010-09-17
申请人： Weiqi Ding , Mingde Pan , Peng Li , Sergey Shumarayev , Masashi Shimanouchi
发明人： Weiqi Ding , Mingde Pan , Peng Li , Sergey Shumarayev , Masashi Shimanouchi
IPC分类号： G06F11/00
CPC分类号： H04L1/203 , G01R31/3171
摘要： An IC that includes an eye viewer and a BER checker coupled to the eye viewer, where the BER checker receives a serial data signal from the eye viewer, is provided. In one implementation, the BER checker receives the serial data signal from the eye viewer without the serial data signal passing through a deserializer. In one implementation, the BER checker compares the serial data signal against a reference data signal to determine the BER for the serial data signal. In one implementation, the IC includes an IC core coupled to the eye viewer and the BER checker, where the BER checker is outside the IC core. In one implementation, the BER checker is a dedicated BER checker. In one implementation, the BER checker includes an exclusive OR gate, a programmable delay circuit coupled to the exclusive OR gate, and an error counter coupled to the exclusive OR gate.
摘要翻译： 提供了一种IC，其包括耦合到眼睛观察者的眼睛观察器和BER检查器，其中BER检查器从眼睛观察器接收串行数据信号。 在一个实现中，BER检查器从眼睛观察器接收串行数据信号，而不经过串行数据信号通过解串器。 在一个实现中，BER检验器将串行数据信号与参考数据信号进行比较，以确定串行数据信号的BER。 在一个实现中，IC包括耦合到眼睛观察器和BER检查器的IC核心，其中BER检验器在IC核心之外。 在一个实现中，BER检查器是专用的BER检查器。 在一个实现中，BER检查器包括异或门，耦合到异或门的可编程延迟电路和耦合到异或门的错误计数器。
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公开(公告)号：US20230094919A1
公开(公告)日：2023-03-30
申请号：US17483771
申请日：2021-09-23
申请人： Hsinho Wu , Peng Li , Masashi Shimanouchi
发明人： Hsinho Wu , Peng Li , Masashi Shimanouchi
摘要： Various embodiments provide apparatuses, systems, and methods to determine a figure of merit (FOM) of a communication link (e.g., a serial communication link, also referred to herein as a channel) between a transmitter and a receiver. The FOM may be used to, for example, determine a health of the communication link during mission mode (normal operating mode), determine a modulation scheme to use for the communication link, determine a configuration to use for the receiver and/or transmitter, and/or another suitable use case. Other embodiments may be described and claimed.
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10.发明申请公开(公告)号：US20210328852A1
公开(公告)日：2021-10-21
申请号：US17358982
申请日：2021-06-25
申请人： Masashi Shimanouchi , Hsinho Wu , Peng Li
发明人： Masashi Shimanouchi , Hsinho Wu , Peng Li
摘要： Systems and devices are provided for receiving or transmitting IQ data (e.g., suitable for passband quadrature amplitude modulation (QAM)) over a wireline using pairs of baseband pulse amplitude modulation (PAM-n) signals. Encoding circuitry may map data from an input bit stream to IQ data that includes an in-phase component and a quadrature-phase component. Modulator circuitry may determine an in-phase PAM-n signal based on the in-phase component and a quadrature-phase PAM-n signal based on the quadrature-phase component. Driver circuitry may transmit the in-phase PAM-n signal and the quadrature-phase PAM-n signal across a wireline channel. The in-phase PAM-n signal may be different by 90° from the quadrature-phase PAM-n signal. This may enable a remote receiver on the wireline channel to detect the in-phase PAM-n signal independently of the quadrature-phase PAM-n signal.
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