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31. 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。

32. 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。

33. 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。

34. 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。

35. 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。

36. 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。

37. 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。

38. 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。

39. 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。

40. 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。

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