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11. 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。

12. 发明授权

US08126039B2 Methods and apparatus for evaluating the eye margin of a communications device using a data eye monitor 有权
标题翻译：使用数据眼监视器评估通信设备的眼边的方法和装置
公开(公告)号：US08126039B2
公开(公告)日：2012-02-28
申请号：US11434688
申请日：2006-05-16
申请人： Mohammad S. Mobin , Gregory W. Sheets , Lane A. Smith , Craig B. Ziemer
发明人： Mohammad S. Mobin , Gregory W. Sheets , Lane A. Smith , Craig B. Ziemer
IPC分类号： H04B3/46
CPC分类号： H04L1/20 , H04B17/309
摘要： Methods and apparatus are provided for evaluating the eye margin of a communications device using a data eye monitor. The quality of a data eye associated with a signal is evaluated by sampling the signal for a plurality of different phases; evaluating the samples to evaluate one or more of a height and width of the data eye; and determining whether the one or more of the height and width satisfy one or more predefined criteria. One or more parameters of the communications device can optionally be adjusted if the communications device does not satisfy the one or more predefined criteria. The communications device can optionally be assigned to a quality category based on the evaluation. A phase offset between a first clock signal used to sample the signal and one or more clocks used to sample data is reduced.
摘要翻译：提供的方法和装置用于评估使用数据眼监护仪的通信设备的眼部边缘。与信号相关联的数据眼的质量通过对多个不同相位的信号进行采样来评估; 评估样本以评估数据眼睛的高度和宽度中的一个或多个; 以及确定所述高度和宽度中的一个或多个是否满足一个或多个预定标准。如果通信设备不满足一个或多个预定标准，则可以可选地调整通信设备的一个或多个参数。可以根据评估可选地将通信设备分配给质量类别。减少用于采样信号的第一时钟信号与用于采样数据的一个或多个时钟之间的相位偏移。

13. 发明授权

US08081011B2 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：US08081011B2
公开(公告)日：2011-12-20
申请号：US12843139
申请日：2010-07-26
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： H02J1/00
摘要： Disclosed is a circuit for adjusting a voltage supplied to an IC by a power supply circuit that produces a regulated-output voltage based on an output-control signal generated by a resistive voltage divider. The circuit includes a PVT detector configured to generate an interface control signal and an interface circuit (i) connected to PVT detector and to the resistive voltage divider and (ii) configured to adjust its resistance in response to the interface control signal. Adjusting the resistance of the interface circuit causes the voltage of the output-control signal to be adjusted, thus causing the power supply circuit to adjust the regulated output voltage.
摘要翻译：公开了一种用于通过电源电路来调节提供给IC的电压的电路，该电源电路基于由电阻分压器产生的输出控制信号产生调节输出电压。电路包括配置成产生接口控制信号的PVT检测器和连接到PVT检测器和电阻分压器的接口电路（i），以及（ii）被配置为响应于接口控制信号调整其电阻。调整接口电路的电阻可以调节输出控制信号的电压，从而使电源电路调整稳压输出电压。

14. 发明授权

US07965133B2 Compensation techniques for reducing power consumption in digital circuitry 有权
标题翻译：用于降低数字电路功耗的补偿技术
公开(公告)号：US07965133B2
公开(公告)日：2011-06-21
申请号：US12160373
申请日：2007-10-31
申请人： Joseph Anidjar , Mohammad S. Mobin , Gregory W. Sheets , Vladimir Sindalovsky , Lane A. Smith
发明人： Joseph Anidjar , Mohammad S. Mobin , Gregory W. Sheets , Vladimir Sindalovsky , Lane A. Smith
IPC分类号： G05F1/10
CPC分类号： H03K19/00369
摘要： A compensation circuit for reducing power consumption in at least one digital circuit includes a first sample circuit connected to a first supply voltage, a second sample circuit connected to a second supply voltage, and a controller connected to the first and second sample circuits. The first and second sample circuits are substantially functionally equivalent to one another but optimized for different regions of operation within a specified range of PVT conditions. The controller is operative to receive respective output signals from the first and second sample circuits, to monitor a functionality of the second sample circuit relative to the first sample circuit, and to adjust a level of the second supply voltage to ensure correct operation of the second sample circuit throughout the specified range of PVT conditions. The digital circuit is operative from the second supply voltage.
摘要翻译：用于降低至少一个数字电路中的功耗的补偿电路包括连接到第一电源电压的第一采样电路，连接到第二电源电压的第二采样电路和连接到第一和第二采样电路的控制器。第一和第二采样电路基本上在功能上彼此相等，但是在PVT条件的指定范围内针对不同操作区域进行了优化。控制器可操作以从第一和第二采样电路接收相应的输出信号，以监测第二采样电路相对于第一采样电路的功能，并调整第二电源电压的电平，以确保第二采样电路的正常工作采样电路在指定的PVT条件范围内。数字电路从第二电源电压工作。

15. 发明申请

US20100289476A1 METHOD AND APPARATUS FOR REGULATING A POWER SUPPLY OF AN INTEGRATED CIRCUIT 有权
标题翻译：用于调节集成电路电源的方法和装置
公开(公告)号：US20100289476A1
公开(公告)日：2010-11-18
申请号：US12843139
申请日：2010-07-26
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： H02J4/00
CPC分类号： H02J1/00
摘要： Disclosed is a circuit for adjusting a voltage supplied to an IC by a power supply circuit that produces a regulated-output voltage based on an output-control signal generated by a resistive voltage divider. The circuit includes a PVT detector configured to generate an interface control signal and an interface circuit (i) connected to PVT detector and to the resistive voltage divider and (ii) configured to adjust its resistance in response to the interface control signal. Adjusting the resistance of the interface circuit causes the voltage of the output-control signal to be adjusted, thus causing the power supply circuit to adjust the regulated output voltage.
摘要翻译：公开了一种用于通过电源电路来调节提供给IC的电压的电路，该电源电路基于由电阻分压器产生的输出控制信号产生调节输出电压。电路包括配置成产生接口控制信号的PVT检测器和连接到PVT检测器和电阻分压器的接口电路（i），以及（ii）被配置为响应于接口控制信号调整其电阻。调整接口电路的电阻可以调节输出控制信号的电压，从而使电源电路调整稳压输出电压。

16. 发明申请

US20100176856A1 METHOD AND APPARATUS FOR DETECTING AND ADJUSTING CHARACTERISTICS OF A SIGNAL 失效
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：US20100176856A1
公开(公告)日：2010-07-15
申请号：US12730671
申请日：2010-03-24
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。

17. 发明授权

US07711043B2 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：US07711043B2
公开(公告)日：2010-05-04
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 , H03H7/40 , H03K5/159
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。

18. 发明授权

US07587640B2 Method and apparatus for monitoring and compensating for skew on a high speed parallel bus 有权
标题翻译：用于监视和补偿高速并行总线上的偏斜的方法和装置
公开(公告)号：US07587640B2
公开(公告)日：2009-09-08
申请号：US11235872
申请日：2005-09-27
申请人： Mohammad S. Mobin , Gregory W. Sheets , Lane A. Smith
发明人： Mohammad S. Mobin , Gregory W. Sheets , Lane A. Smith
IPC分类号： G11B20/20
CPC分类号： G06F13/4213
摘要： Methods and apparatus are provided for monitoring and compensating for skew on a high speed parallel bus. Delay skew for a plurality of signals on a parallel bus is monitored by obtaining a plurality of samples of the plurality of signals for each unit interval; and identifying a location of transitions in the plurality of signals based on the samples. The samples can be obtained, for example, by sampling the plurality of signals using a plurality of latches and estimating a value of one or more of the plurality of signals by comparing values of the latches. A microprocessor can optionally be employed to determine a relative distribution of transitions in the plurality of signals and to align transitions in the plurality of signals to a common position. The transitions in the plurality of signals can be aligned to a common position by adjusting a delay control setting for a buffer associated with each of the plurality of signals.
摘要翻译：提供了用于监视和补偿高速并行总线上的偏斜的方法和装置。通过获得每个单位间隔的多个信号的多个样本来监视并行总线上的多个信号的延迟偏移; 以及基于所述样本来识别所述多个信号中的转变的位置。可以例如通过使用多个锁存器对多个信号进行采样并且通过比较锁存器的值来估计多个信号中的一个或多个的值来获得样本。可以可选地使用微处理器来确定多个信号中的转变的相对分布并且将多个信号中的转变对准到公共位置。通过调整与多个信号中的每个信号相关联的缓冲器的延迟控制设置，多个信号中的转换可以对齐到公共位置。

19. 发明申请

US20090168936A1 Methods and Apparatus for Detecting a Loss of Lock Condition in a Clock and Data Recovery System 有权
标题翻译：用于检测时钟和数据恢复系统中锁定状态丢失的方法和装置
公开(公告)号：US20090168936A1
公开(公告)日：2009-07-02
申请号：US11967632
申请日：2007-12-31
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： H04L7/00
CPC分类号： H04L7/0062 , H04L7/0083
摘要： Methods and apparatus are provided for detecting a loss of lock condition in a clock and data recovery system. A loss of lock condition is detected in a clock and data recovery system that generates a recovered clock signal from a received signal by sampling the received signal for a plurality of different phases using one or more latches clocked by the recovered clock; evaluating the samples to monitor a data eye associated with the received signal; and detecting the loss of lock condition if the data eye does not satisfy one or more predefined conditions. Generally, the predefined conditions identify a loss of the data eye (e.g, when the data eye cannot be substantially detected), for example, based on a degree of opening of the data eye. The clock and data recovery system can optionally be restarted if the loss of lock condition is detected.
摘要翻译：提供了用于检测时钟和数据恢复系统中的锁定状况的损失的方法和装置。在时钟和数据恢复系统中检测到锁定状态的损失，该系统通过使用由恢复时钟计时的一个或多个锁存器对接收到的信号进行多个不同相位的采样来产生来自接收信号的恢复时钟信号; 评估样本以监测与接收信号相关联的数据眼; 并且如果数据眼不满足一个或多个预定条件，则检测锁定条件的损失。通常，预定条件识别数据眼的损失（例如，当数据眼不能被基本上被检测时），例如，基于数据眼的打开程度。如果检测到锁定状态的丢失，则可以可选地重新启动时钟和数据恢复系统。

20. 发明申请

US20090110046A1 METHOD AND APPARATUS FOR EQUALIZATION USING ONE OR MORE QUALIFIERS 有权
标题翻译：使用一个或多个合格者进行均衡化的方法和装置
公开(公告)号：US20090110046A1
公开(公告)日：2009-04-30
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： 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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