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21. 发明授权

US07791368B2 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：US07791368B2
公开(公告)日：2010-09-07
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： H03K17/16 , H03K19/003
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。

22. 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。

23. 发明申请

US20090168940A1 Methods and Apparatus for Improved Jitter Tolerance in an SFP Limit Amplified Signal 失效
标题翻译：用于改善SFP限幅放大信号中抖动容限的方法和装置
公开(公告)号：US20090168940A1
公开(公告)日：2009-07-02
申请号：US11967602
申请日：2007-12-31
申请人： Pervez M. Aziz , Adam B. Healey , Mohammad S. Mobin , Gary E. Schiessler , Gregory W. Sheets , Lane A. Smith , Paul H. Tracy , Geoffrey Zhang
发明人： Pervez M. Aziz , Adam B. Healey , Mohammad S. Mobin , Gary E. Schiessler , Gregory W. Sheets , Lane A. Smith , Paul H. Tracy , Geoffrey Zhang
IPC分类号： H04L7/00
CPC分类号： H04B10/6972
摘要： Methods and apparatus are provided for improving the jitter tolerance in an SFP limit amplified signal. Jitter tolerance is improved in a communications receiver by applying a received signal to an SFP limiting amplifier; and applying an output of the SFP limiting amplifier to a low pass filter to improve the jitter tolerance. The low pass filter optionally applies a programmable amount of attenuation to high frequency components of the output. The low pass filter slew rate controls (i.e., rotates) a data eye representation of the received signal to increase the data eye representation along a time axis. The noise margin of the received signal can optionally be improved by applying an output of the low pass filter to an all pass filter. A slew rate controller can evaluate the data eye statistics to determine a setting for the low pass filter.
摘要翻译：提供了用于改善SFP限幅放大信号中的抖动容限的方法和装置。在通信接收机中通过将接收到的信号施加到SFP限幅放大器来提高抖动容差; 并将SFP限幅放大器的输出施加到低通滤波器以提高抖动容限。低通滤波器可选择地将可编程量的衰减应用于输出的高频分量。低通滤波器转换速率控制（即旋转）接收信号的数据眼表示，以沿着时间轴增加数据眼睛表示。可以通过将低通滤波器的输出施加到全通滤波器来可选地改善接收信号的噪声容限。压摆率控制器可以评估数据眼统计量，以确定低通滤波器的设置。

24. 发明授权

US07492291B2 Methods and apparatus for interfacing a plurality of encoded serial data streams to a serializer/deserializer circuit 有权
标题翻译：用于将多个编码的串行数据流连接到串行器/解串行器电路的方法和装置
公开(公告)号：US07492291B2
公开(公告)日：2009-02-17
申请号：US11741789
申请日：2007-04-30
申请人： Brian Murray , Jacobo Riesco , Gregory W. Sheets , Lane A. Smith
发明人： Brian Murray , Jacobo Riesco , Gregory W. Sheets , Lane A. Smith
IPC分类号： H03M9/00
CPC分类号： H04L25/4908 , H03M5/145 , H04L25/03866 , H04L49/351
摘要： Methods and apparatus are provided for interfacing a plurality of encoded serial data streams, such as Serial Gigabit Media Independent Interface streams, to a serializer/deserializer circuit. A plurality of encoded serial data streams are transmitted by receiving the plurality of encoded serial data streams that have been encoded using an encoding scheme that provides a substantially uniform distribution of a first code and a second code; marking at least one of the encoded serial data streams (such as changing a first code to a predefined code); and combining at least two of the plurality of encoded serial data streams into a single data stream. A plurality of encoded serial data streams are received by receiving a single data stream comprised of the plurality of encoded serial data streams; detecting a mark in the single data stream; demultiplexing the single data stream into the plurality of encoded serial data streams based on the mark; and providing the demultiplexed plurality of encoded serial data streams to a decoder that decodes the plurality of encoded serial data streams using a decoding scheme that provides a substantially uniform distribution of a first code and a second code.
摘要翻译：提供了用于将多个编码的串行数据流（诸如串行千兆位媒体独立接口流）连接到串行器/解串行器电路的方法和装置。通过接收已经使用提供第一代码和第二代码的基本均匀分布的编码方案来编码的多个编码串行数据流来发送多个编码串行数据流; 标记编码串行数据流中的至少一个（例如将第一代码改变为预定义的代码）; 以及将所述多个编码串行数据流中的至少两个组合成单个数据流。通过接收由多个编码串行数据流组成的单个数据流来接收多个编码串行数据流; 检测单个数据流中的标记; 基于标记将单个数据流解复用为多个编码串行数据流; 以及将解复用的多个编码的串行数据流提供给使用提供第一代码和第二代码的基本均匀分布的解码方案来解码多个经编码的串行数据流的解码器。

25. 发明申请

US20080095218A1 Methods And Apparatus For Interfacing A Plurality Of Encoded Serial Data Streams To A Serializer/Deserializer Circuit 有权
标题翻译：用于将多个编码串行数据流连接到串行器/解串器电路的方法和装置
公开(公告)号：US20080095218A1
公开(公告)日：2008-04-24
申请号：US11741789
申请日：2007-04-30
申请人： Brian Murray , Jacobo Riesco , Gregory W. Sheets , Lane A. Smith
发明人： Brian Murray , Jacobo Riesco , Gregory W. Sheets , Lane A. Smith
IPC分类号： H04B1/00
CPC分类号： H04L25/4908 , H03M5/145 , H04L25/03866 , H04L49/351
摘要： Methods and apparatus are provided for interfacing a plurality of encoded serial data streams, such as Serial Gigabit Media Independent Interface streams, to a serializer/deserializer circuit. A plurality of encoded serial data streams are transmitted by receiving the plurality of encoded serial data streams that have been encoded using an encoding scheme that provides a substantially uniform distribution of a first code and a second code; marking at least one of the encoded serial data streams (such as changing a first code to a predefined code); and combining at least two of the plurality of encoded serial data streams into a single data stream. A plurality of encoded serial data streams are received by receiving a single data stream comprised of the plurality of encoded serial data streams; detecting a mark in the single data stream; demultiplexing the single data stream into the plurality of encoded serial data streams based on the mark; and providing the demultiplexed plurality of encoded serial data streams to a decoder that decodes the plurality of encoded serial data streams using a decoding scheme that provides a substantially uniform distribution of a first code and a second code.
摘要翻译：提供了用于将多个编码的串行数据流（诸如串行千兆位媒体独立接口流）连接到串行器/解串行器电路的方法和装置。通过接收已经使用提供第一代码和第二代码的基本均匀分布的编码方案来编码的多个编码串行数据流来发送多个编码串行数据流; 标记编码串行数据流中的至少一个（例如将第一代码改变为预定义的代码）; 以及将所述多个编码串行数据流中的至少两个组合成单个数据流。通过接收由多个编码串行数据流组成的单个数据流来接收多个编码串行数据流; 检测单个数据流中的标记; 基于标记将单个数据流解复用为多个编码串行数据流; 以及将解复用的多个编码的串行数据流提供给使用提供第一代码和第二代码的基本均匀分布的解码方案来解码多个经编码的串行数据流的解码器。

26. 发明申请

US20080080611A1 METHOD AND APPARATUS FOR DECISION-FEEDBACK EQUALIZATION USING SINGLE-SIDED EYE WITH GLOBAL MINIMUM CONVERGENCE 有权
标题翻译：使用单眼眼睛进行决策反馈均衡的方法和装置与全球最小的融合
公开(公告)号：US20080080611A1
公开(公告)日：2008-04-03
申请号：US11686148
申请日：2007-03-14
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： H04L5/16
CPC分类号： H04L25/03057 , H04L2025/03503
摘要： Methods and apparatus are provided for decision-feedback equalization with global minimum convergence. A threshold position of one or more DFE latches employed by a decision-feedback equalizer is determined by obtaining a plurality of samples of a single-sided data eye using at least one decision latch and at least one roaming latch; comparing the samples obtained by the at least one decision latch and at least one roaming latch to identify an upper and lower voltage boundary of the single-sided data eye; and determining a threshold position of the one or more DFE latches based on the upper and lower voltage boundaries. The comparison can optionally comprise obtaining an exclusive or (XOR) of the samples obtained by the at least one decision latch and at least one roaming latch. The XOR comparison positions an opening for the single-sided data eye at a zero hit count
摘要翻译：提供了用于具有全局最小收敛的判决反馈均衡的方法和装置。通过使用至少一个判定锁存器和至少一个漫游锁存器获得单面数据眼睛的多个采样来确定由判决反馈均衡器采用的一个或多个DFE锁存器的阈值位置; 将由所述至少一个判定锁存器获得的样本和至少一个漫游锁存器进行比较，以识别所述单侧数据眼睛的上下电压边界; 以及基于所述上下电压边界确定所述一个或多个DFE锁存器的阈值位置。比较可以可选地包括获得由至少一个决定锁存器和至少一个漫游锁存器获得的样本的异或（XOR）。 XOR比较将零点击数的单面数据眼的开口位置

27. 发明申请

US20080080608A1 Method and apparatus for determining latch position for decision-feedback equalization using single-sided eye 失效
标题翻译：用于使用单面眼确定用于判决反馈均衡的闩锁位置的方法和装置
公开(公告)号：US20080080608A1
公开(公告)日：2008-04-03
申请号：US11540946
申请日：2006-09-29
申请人： Mohammad S. Mobin , Gary E. Schiessler , Gregory W. Sheets , Vladimir Sindalovsky , Lane A. Smith
发明人： Mohammad S. Mobin , Gary E. Schiessler , Gregory W. Sheets , Vladimir Sindalovsky , Lane A. Smith
IPC分类号： H03H7/30
CPC分类号： H04L25/03057 , H04L2025/03503
摘要： Methods and apparatus are provided for determining the threshold position of one or more latches employed for decision-feedback equalization. A threshold position of a latch employed by a decision-feedback equalizer is determined by constraining input data such that the input data only contains transitions from a first binary value; obtaining a plurality of samples of a single-sided data eye associated with the constrained input data; and determining a threshold position of the latch based on the samples. The constrained input data can comprise (i) transitions from a binary value of 1 to a binary value of 0 or 1; or (ii) transitions from a binary value of 0 to a binary value of 0 or 1. The size of the single-sided data eye can be obtained by analyzing a histogram associated with the single-sided data eye to identify a region having a constant hit count.
摘要翻译：提供了用于确定用于判决反馈均衡的一个或多个锁存器的阈值位置的方法和装置。通过约束输入数据来确定由判决反馈均衡器采用的锁存器的阈值位置，使得输入数据仅包含来自第一二进制值的转换; 获得与所述约束输入数据相关联的单面数据眼睛的多个样本; 以及基于所述样本确定所述锁存器的阈值位置。受约束的输入数据可以包括（i）从二进制值1到二进制值0或1的转换; 或（ii）从二进制值0到二进制值0或1的转换。单面数据眼的大小可以通过分析与单面数据眼相关联的直方图来识别具有不断的命中数。

28. 发明申请

US20080043876A1 Method and apparatus for increased communication channel pre-emphasis for clock-like data patterns 有权
标题翻译：用于增加用于时钟状数据模式的通信信道预加重的方法和装置
公开(公告)号：US20080043876A1
公开(公告)日：2008-02-21
申请号：US11506536
申请日：2006-08-18
申请人： Mohammad S. Mobin , Gregory W. Sheets , Lane A. Smith , Vladimir Sindalovsky
发明人： Mohammad S. Mobin , Gregory W. Sheets , Lane A. Smith , Vladimir Sindalovsky
IPC分类号： H04B15/00
CPC分类号： H04L25/03343 , H04L25/0286 , H04L25/03885
摘要： Methods and apparatus are disclosed for increased pre-emphasis for clock-like data patterns to compensate for channel distortions. One aspect of the invention compensates for channel distortions by evaluating a data pattern to be transmitted; determining if the data pattern satisfies one or more predefined criteria defining a clock-like data pattern; and generating a pre-emphasis level for the clock-like data patterns that is higher than a pre-emphasis level for the data patterns that do not satisfy the one or more predefined criteria. For example, a predefined window size can be defined for determining if the data pattern satisfies the one or more predefined criteria defining the clock-like data pattern. In one exemplary implementation, the higher pre-emphasis level is generated for one or more predefined data patterns. A table can optionally be accessed to determine the pre-emphasis level based on the data pattern.
摘要翻译：公开了用于增加对时钟状数据模式的预加重以补偿信道失真的方法和装置。本发明的一个方面通过评估要发送的数据模式来补偿信道失真; 确定数据模式是否满足定义时钟状数据模式的一个或多个预定标准; 以及对于不满足一个或多个预定标准的数据模式的高于预加重级别的时钟状数据模式，生成预加重级别。例如，可以定义预定窗口大小以确定数据模式是否满足定义时钟状数据模式的一个或多个预定标准。在一个示例性实现中，为一个或多个预定义的数据模式生成较高的预加重级别。可以可选地访问表以基于数据模式确定预加重级别。

29. 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。

30. 发明授权

US08432959B2 Method and apparatus for equalization using one or more qualifiers 有权
标题翻译：使用一个或多个限定符进行均衡的方法和装置
公开(公告)号：US08432959B2
公开(公告)日：2013-04-30
申请号：US11930814
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： H03H7/30 , H03K5/159
CPC分类号： H04L25/0262 , H04L25/03006 , H04L25/03057 , H04L2025/03375 , H04L2025/03535 , H04L2025/03726
摘要： Methods and apparatus are provided for equalizing a received signal. A received signal is equalized by updating one or more equalization parameters; and discarding the updated equalization parameters if one or more predefined qualifier conditions are detected during the equalizing step. The received signal can optionally be equalized using the updated equalization parameters if the predefined qualifier conditions are not detected during the equalizing step. The updated equalization parameters can optionally be stored if the one or more predefined qualifier conditions are not detected during the equalizing step.
摘要翻译：提供了用于均衡接收信号的方法和装置。通过更新一个或多个均衡参数来使接收信号相等; 以及如果在均衡步骤期间检测到一个或多个预定义的限定条件，则丢弃所述更新的均衡参数。如果在平衡步骤期间未检测到预定义的限定条件，则可以使用更新的均衡参数来选择性地均衡所接收的信号。如果在均衡步骤期间未检测到一个或多个预定义限定条件，则可以可选地存储更新的均衡参数。

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