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1. 发明申请

US20070268984A1 Method and apparatus for determining one or more channel compensation parameters based on data eye monitoring 有权
标题翻译：用于基于数据眼睛监测来确定一个或多个信道补偿参数的方法和装置
公开(公告)号：US20070268984A1
公开(公告)日：2007-11-22
申请号：US11434687
申请日：2006-05-16
申请人： Christopher J. Abel , Mohammad S. Mobin , Gregory W. Sheets , Lane A. Smith
发明人： Christopher J. Abel , Mohammad S. Mobin , Gregory W. Sheets , Lane A. Smith
IPC分类号： H04B15/00
CPC分类号： H04L25/03343 , H04L1/205 , H04L2025/03681 , H04L2025/03802
摘要： Methods and apparatus are provided for determining one or more channel compensation parameters based on data eye monitoring. According to one aspect of the invention, a method is provided for evaluating the quality of a data eye associated with a signal. The received signal is sampled for a plurality of different phases, for example, using at least two latches, and the samples are evaluated to identify when the signal crosses a predefined amplitude value, such as a zero crossing. It is determined whether the points of predefined amplitude crossing satisfy one or more predefined criteria. One or more parameters of one or more channel compensation techniques can optionally be adjusted based on a result of the determining step. One or more parameters of an adjacent transmitter can also be adjusted to reduce near end cross talk based on a result of the determining step.
摘要翻译：提供了用于基于数据眼睛监测来确定一个或多个信道补偿参数的方法和装置。根据本发明的一个方面，提供了一种用于评估与信号相关联的数据眼的质量的方法。接收到的信号对于多个不同的相位进行采样，例如使用至少两个锁存器，并且评估样本以识别信号何时跨越预定义的幅度值，例如零交叉。确定预定义的幅度交叉点是否满足一个或多个预定标准。一个或多个信道补偿技术的一个或多个参数可以根据确定步骤的结果来任意地进行调整。也可以根据确定步骤的结果，调整相邻发射机的一个或多个参数以减少近端串扰。

2. 发明授权

US08861580B2 Method and apparatus for determining one or more channel compensation parameters based on data eye monitoring 有权
标题翻译：用于基于数据眼睛监测来确定一个或多个信道补偿参数的方法和装置
公开(公告)号：US08861580B2
公开(公告)日：2014-10-14
申请号：US11434687
申请日：2006-05-16
申请人： Christopher J. Abel , Mohammad S. Mobin , Gregory W. Sheets , Lane A. Smith
发明人： Christopher J. Abel , Mohammad S. Mobin , Gregory W. Sheets , Lane A. Smith
IPC分类号： H03H7/30 , H04L25/03 , H04L1/20
CPC分类号： H04L25/03343 , H04L1/205 , H04L2025/03681 , H04L2025/03802
摘要： Methods and apparatus are provided for determining one or more channel compensation parameters based on data eye monitoring. According to one aspect of the invention, a method is provided for evaluating the quality of a data eye associated with a signal. The received signal is sampled for a plurality of different phases, for example, using at least two latches, and the samples are evaluated to identify when the signal crosses a predefined amplitude value, such as a zero crossing. It is determined whether the points of predefined amplitude crossing satisfy one or more predefined criteria. One or more parameters of one or more channel compensation techniques can optionally be adjusted based on a result of the determining step. One or more parameters of an adjacent transmitter can also be adjusted to reduce near end cross talk based on a result of the determining step.
摘要翻译：提供了用于基于数据眼睛监测来确定一个或多个信道补偿参数的方法和装置。根据本发明的一个方面，提供了一种用于评估与信号相关联的数据眼的质量的方法。对于多个不同的相位，例如使用至少两个锁存器对接收到的信号进行采样，并且评估采样以识别信号何时跨越预定义的幅度值，例如零交叉。确定预定义的幅度交叉点是否满足一个或多个预定标准。一个或多个信道补偿技术的一个或多个参数可以根据确定步骤的结果来任意地进行调整。也可以根据确定步骤的结果，调整相邻发射机的一个或多个参数以减少近端串扰。

3. 发明授权

US07649933B2 Method and apparatus for determining a position of an offset latch employed for decision-feedback equalization 有权
标题翻译：用于确定用于判决反馈均衡的偏移锁存器的位置的方法和装置
公开(公告)号：US07649933B2
公开(公告)日：2010-01-19
申请号：US11414522
申请日：2006-04-28
申请人： Christopher J. Abel , Mohammad S. Mobin , Gregory W. Sheets , Vladimir Sindalovsky , Lane A. Smith
发明人： Christopher J. Abel , Mohammad S. Mobin , Gregory W. Sheets , Vladimir Sindalovsky , Lane A. Smith
IPC分类号： H03H7/30 , H03H7/40 , H03K5/159
CPC分类号： H04L25/062 , H04L25/03057
摘要： Methods and apparatus are provided for determining a position of an offset latch employed for decision-feedback equalization. The position of an offset latch is determined by obtaining a plurality of samples of a data eye associated with a signal, the data eye comprised of a plurality of trajectories for transitions out of a given binary state; determining an amplitude of at least two of the trajectories based on the samples; and determining a position of an offset latch based on the determined amplitudes. The initial position of the offset latch can be placed, for example, approximately in the middle of the determined amplitudes for at least two of the trajectories. The initial position of the offset latch can be optionally skewed by a predefined amount to improve the noise margin.
摘要翻译：提供了用于确定用于判决反馈均衡的偏移锁存器的位置的方法和装置。通过获得与信号相关联的数据眼睛的多个采样来确定偏移锁存器的位置，数据眼睛包括用于从给定二进制状态转换的多个轨迹; 基于样本确定至少两个轨迹的振幅; 以及基于所确定的振幅来确定偏移锁存器的位置。偏移锁存器的初始位置例如可以放置在至少两个轨迹的确定幅度的中间。偏移锁存器的初始位置可以可选地倾斜预定义的量以改善噪声容限。

4. 发明申请

US20070271052A1 Method and apparatus for measuring duty cycle based on data eye monitor 审中-公开
标题翻译：基于数据眼监测器测量占空比的方法和装置
公开(公告)号：US20070271052A1
公开(公告)日：2007-11-22
申请号：US11434686
申请日：2006-05-16
申请人： Christopher J. Abel , Mohammad S. Mobin , Gregory W. Sheets , Lane A. Smith
发明人： Christopher J. Abel , Mohammad S. Mobin , Gregory W. Sheets , Lane A. Smith
IPC分类号： G01R25/00 , G01R29/02
CPC分类号： H03K5/1565 , H03K5/159 , H03K9/08
摘要： Methods and apparatus are provided for measuring the duty cycle of a signal based on a data eye monitor. The duty cycle of a signal is estimated by sampling the signal for a plurality of different phases and evaluating the samples to identify when the signal crosses a predefined amplitude value. The duty cycle is estimated based on a statistical variation between the points of predefined amplitude crossing, such as points of zero crossing. The duty cycle can optionally be corrected based on the measured duty cycle value. The sampling of the signal may be performed, for example, using one or more latches.
摘要翻译：提供了用于测量基于数据眼监护仪的信号占空比的方法和装置。通过对多个不同相位的信号进行采样来估计信号的占空比，并且评估采样以识别该信号何时穿过预定的振幅值。基于预定义的幅度交叉点的统计变化（例如零交叉点）估计占空比。占空比可以根据测得的占空比值进行任意修正。可以例如使用一个或多个锁存器来执行信号的采样。

5. 发明授权

US08219344B2 Method and apparatus for digital VCDL startup 失效
标题翻译：数字VCDL启动的方法和装置
公开(公告)号：US08219344B2
公开(公告)日：2012-07-10
申请号：US12789544
申请日：2010-05-28
申请人： Mohammad S. Mobin , Gregory W. Sheets , Lane A. Smith , Paul H. Tracy
发明人： Mohammad S. Mobin , Gregory W. Sheets , Lane A. Smith , Paul H. Tracy
IPC分类号： H03L7/06
CPC分类号： H03L7/0812
摘要： Methods and apparatus are provided for improved startup of a voltage controlled delay loop that has an injection clock and a return clock. A control signal is determined for a plurality of delay elements in a voltage controlled delay loop by obtaining a histogram count of a number of occurrences of at least one predefined logic value for a plurality of delay settings of the voltage controlled delay loop; determining a histogram count that approximately corresponds to an alignment of at least one edge in the injection and return clocks; and determining the control signal based on the determined histogram count that approximately corresponds to the alignment. The voltage controlled delay loop can be started using the determined control signal. The histogram count can be obtained for a plurality of PVT combinations and the control signal can then be determined for each PVT combination.
摘要翻译：提供了用于改进启动具有注入时钟和返回时钟的电压控制延迟回路的方法和装置。通过获得针对电压控制的延迟环路的多个延迟设置的至少一个预定逻辑值的出现次数的直方图计数，为电压控制的延迟环路中的多个延迟元件确定控制信号; 确定近似对应于所述注入和返回时钟中的至少一个边缘的对准的直方图计数; 以及基于大致对应于所述对准的所确定的直方图计数来确定所述控制信号。可以使用所确定的控制信号来开始压控延迟环路。可以为多个PVT组合获得直方图计数，然后可以为每个PVT组合确定控制信号。

6. 发明授权

US07693088B2 Method and apparatus for data rate detection using a data eye monitor 有权
标题翻译：使用数据眼监视器进行数据速率检测的方法和装置
公开(公告)号：US07693088B2
公开(公告)日：2010-04-06
申请号：US11686144
申请日：2007-03-14
申请人： Dwight D. Daugherty , Mohammad S. Mobin , Gregory W. Sheets , Lane A. Smith , Paul H. Tracy
发明人： Dwight D. Daugherty , Mohammad S. Mobin , Gregory W. Sheets , Lane A. Smith , Paul H. Tracy
IPC分类号： H04L12/26 , H04J3/06 , H04B17/00
CPC分类号： H04L25/0262
摘要： Methods and apparatus are provided for data rate detection using a data eye monitor. The data rate is one of a plurality of data rates comprising a base rate and one or more divide-by-N multiples of the base rate, where N is an integer. The data rate of a received signal is detected by sampling the received signal; comparing the samples for a plurality of full rate data eyes associated with the received signal to determine if there is a mismatch between at least two predefined samples; and detecting the data rate by evaluating the comparison based on predefined criteria. The comparison can be performed by an exclusive or (XOR) logic gate for samples of at least two adjacent data eyes of a given rate.
摘要翻译：提供了使用数据眼监视器进行数据速率检测的方法和装置。数据速率是包括基本速率和基本速率的一个或多个除以N倍数的多个数据速率之一，其中N是整数。通过对接收到的信号进行采样来检测接收信号的数据速率; 比较与所接收的信号相关联的多个全速率数据眼睛的样本，以确定是否存在至少两个预定样本之间的不匹配; 以及通过基于预定标准评估比较来检测数据速率。可以通过异或（XOR）逻辑门对给定速率的至少两个相邻数据眼的样本执行比较。

7. 发明申请

US20090219978A1 Methods And Apparatus For Adaptive Link Partner Transmitter Equalization 有权
标题翻译：自适应链路伙伴发射机均衡的方法和装置
公开(公告)号：US20090219978A1
公开(公告)日：2009-09-03
申请号：US12040575
申请日：2008-02-29
申请人： Mohammad S. Mobin , Gregory W. Sheets , Lane A. Smith , Paul H. Tracy
发明人： Mohammad S. Mobin , Gregory W. Sheets , Lane A. Smith , Paul H. Tracy
IPC分类号： H04B1/38
CPC分类号： H04L25/03006 , H04L25/03343 , H04L2025/0377 , H04L2025/03808
摘要： Methods and apparatus are provided for adaptive link partner transmitter equalization. According to one aspect of the invention, a local transceiver adapts one ox more equalization parameters of a link partner by receiving a training frame over a channel between the link partner and the local transceiver, wherein the training frame is comprised of a predefined training pattern; adjusting one or more of the equalization parameters of the link partner; and determining whether the equalization of the channel satisfies one or more predefined criteria based on whether the predefined training pattern is properly received by the local transceiver The predefined training pattern can be a pseudo random pattern, such as a PN11 pattern. Noise margins and jitters margins for the channel can optionally be improved.
摘要翻译：为自适应链路伙伴发射机均衡提供了方法和装置。根据本发明的一个方面，本地收发器通过在所述链路伙伴和所述本地收发器之间的信道上接收训练帧来适配链路伙伴的一个更多的均衡参数，其中所述训练帧由预定的训练模式组成; 调整所述链路伙伴的一个或多个均衡参数; 以及基于所述预定训练模式是否由所述本地收发器适当地接收来确定所述信道的均衡是否满足一个或多个预定标准。所述预定训练模式可以是诸如PN11模式的伪随机模式。通道的噪声余量和抖动余量可以任意改进。

8. 发明申请

US20090110045A1 METHOD AND APPARATUS FOR RATE-DEPENDENT EQUALIZATION 失效
标题翻译：用于速率依赖均衡的方法和装置
公开(公告)号：US20090110045A1
公开(公告)日：2009-04-30
申请号：US11930780
申请日：2007-10-31
申请人： Pervez M. Aziz , Mohammad S. Mobin , Gregory W. Sheets , Lane A. Smith , Paul H. Tracy
发明人： Pervez M. Aziz , Mohammad S. Mobin , Gregory W. Sheets , Lane A. Smith , Paul H. Tracy
IPC分类号： H03K5/159
CPC分类号： H04L25/03057 , H04L25/0262 , H04L2025/03547
摘要： Methods and apparatus are provided fox equalizing a received signal. A received signal is equalized by determining a data rate of the received signal; obtaining one or more equalization parameters associated with the determined data rate; and equalizing the received signal using the obtained one or more equalization parameters. The equalization parameters may comprise, for example, one or more of a gain parameter, zero control for a high pass filter and one or more threshold settings for one or more latches used during the equalizing step, such as data latches or transition latches (or both).
摘要翻译：提供了均衡接收信号的方法和装置。接收到的信号通过确定接收信号的数据速率来均衡; 获得与所确定的数据速率相关联的一个或多个均衡参数; 以及使用所获得的一个或多个均衡参数来均衡所接收的信号。均衡参数可以包括例如增益参数，高通滤波器的零控制和在均衡步骤期间使用的一个或多个锁存器的一个或多个阈值设置中的一个或多个，诸如数据锁存器或转换锁存器（或都）。

9. 发明申请

US20080191766A1 Method and apparatus for detecting and adjusting characteristics of a signal 有权
标题翻译：用于检测和调整信号特性的方法和装置
公开(公告)号：US20080191766A1
公开(公告)日：2008-08-14
申请号：US12012758
申请日：2008-02-05
申请人： Kouros Azimi , Mohammad S. Mobin , Gregory W. Sheets , Lane A. Smith
发明人： Kouros Azimi , Mohammad S. Mobin , Gregory W. Sheets , Lane A. Smith
IPC分类号： H03K5/12
CPC分类号： H03K5/02 , H03K5/06 , H03K19/017581 , H04L25/0288
摘要： Disclosed is a circuit that adjusts a characteristic of a signal transmitted from a transmitter to a receiver over a communication channel (e.g., a wire, a backplane, etc.). The circuit includes a latch that receives the signal at a predetermined point in the circuit and samples a voltage of the signal many times after a threshold voltage is applied to the latch. The circuit also includes a processor that determines the characteristic of the signal when the sampled voltages indicate a transition point and that adjusts the threshold voltage when the sampled voltages do not indicate a transition point. The processor adjusts the characteristic of the signal by adjusting at least one of a current and a voltage of the transmitter when the characteristic of the signal is outside a predetermined range.
摘要翻译：公开了一种通过通信信道（例如，线，背板等）调整从发射机发射到接收机的信号的特性的电路。该电路包括一个锁存器，该锁存器在阈值电压施加到锁存器之后多次接收电路中预定点处的信号并对信号的电压进行多次采样。该电路还包括一个处理器，当采样电压指示转换点时，确定信号的特性，并且当采样电压不指示转换点时调整阈值电压。当信号的特性在预定范围之外时，处理器通过调节发射机的电流和电压中的至少一个来调整信号的特性。

10. 发明申请

US20080191669A1 Method and apparatus for regulating a power supply of an integrated circuit 有权
标题翻译：用于调节集成电路的电源的方法和装置
公开(公告)号：US20080191669A1
公开(公告)日：2008-08-14
申请号：US12012733
申请日：2008-02-05
申请人： Kouros Azimi , Mohammad S. Mobin , Gregory W. Sheets , Lane A. Smith
发明人： Kouros Azimi , Mohammad S. Mobin , Gregory W. Sheets , Lane A. Smith
IPC分类号： H02J1/00 , H02J3/00
CPC分类号： H02J1/06
摘要： Disclosed is a circuit for adjusting a voltage supplied to an IC by a power supply. The circuit includes a PVT detector configured to generate a control signal and an adjustable resistance device configured to adjust its resistance in response to the control signal.
摘要翻译：公开了一种用于通过电源调节提供给IC的电压的电路。电路包括被配置为产生控制信号的PVT检测器和被配置为响应于控制信号调整其电阻的可调电阻器件。

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