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1. 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。

2. 发明授权

US08837626B2 Conditional adaptation of linear filters in a system having nonlinearity 有权
标题翻译：线性滤波器在具有非线性的系统中的条件适应
公开(公告)号：US08837626B2
公开(公告)日：2014-09-16
申请号：US13315831
申请日：2011-12-09
申请人： Amaresh Malipatil , Pervez M. Aziz , Mohammad S. Mobin , Ye Liu
发明人： Amaresh Malipatil , Pervez M. Aziz , Mohammad S. Mobin , Ye Liu
IPC分类号： H04L27/01
CPC分类号： H04L25/03057 , H04L7/033 , H04L7/0331 , H04L25/0292 , H04L25/0307 , H04L25/03159 , H04L25/03885 , H04L2025/03636 , H04L2025/037
摘要： Described embodiments adjust configurable parameters of at least one filter of a communication system. The method includes conditioning, by an analog front end (AFE) of a receiver in the communication system, an input signal applied to the receiver. Sampled values of the conditioned input signal are generated and digitized. An error detection module generates an error signal based on digitized values of the input signal and a target value. A decision feedback equalizer generates an adjustment signal based on the digitized values of the input signal and values of the error signal. A summer subtracts the adjustment signal from the conditioned input signal, generating an adjusted input signal. An adaptation module determines a conditional adaptation signal based on a comparison of sampled values of the adjusted input signal and values of the error signal. The adaptation module adjusts a transfer function of at least one filter based on the conditional adaptation signal.
摘要翻译：描述的实施例调整通信系统的至少一个滤波器的可配置参数。该方法包括通过通信系统中的接收机的模拟前端（AFE）调整施加到接收机的输入信号。生成调节输入信号的采样值并进行数字化。误差检测模块基于输入信号的数字化值和目标值产生误差信号。判决反馈均衡器基于输入信号的数字化值和误差信号的值生成调整信号。夏季从调节的输入信号中减去调整信号，产生经调整的输入信号。适应模块基于经调整的输入信号的采样值和误差信号的值的比较来确定条件适配信号。适应模块基于条件适应信号来调整至少一个滤波器的传递函数。

3. 发明授权

US08798222B2 Methods and apparatus for digital linearization of an analog phase interpolator 有权
标题翻译：用于数字线性化模拟相位内插器的方法和装置
公开(公告)号：US08798222B2
公开(公告)日：2014-08-05
申请号：US11095770
申请日：2005-03-31
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： H04L7/00
CPC分类号： H03K5/13 , H03K2005/00052 , H04L7/00
摘要： Methods and apparatus are provided for digital linearization of an analog phase interpolator. Up to 2N desired phase values are mapped to a corresponding M bit value, where M is greater than N. A corresponding M bit value is applied to the phase interpolator to obtain a desired one of the 2N desired phase values. A linearized phase interpolator is also provided that accounts for process, voltage, temperature or aging (PVTA) variations.
摘要翻译：提供了用于模拟相位内插器的数字线性化的方法和装置。多达2N个所需的相位值被映射到对应的M位值，其中M大于N.相应的M位值被施加到相位内插器以获得期望的2N个期望相位值。还提供了线性化相位内插器，其考虑过程，电压，温度或老化（PVTA）变化。

4. 发明授权

US08548038B2 Pattern detector for serializer-deserializer adaptation 有权
标题翻译：串行器 - 解串器适配模式检测器
公开(公告)号：US08548038B2
公开(公告)日：2013-10-01
申请号：US13312443
申请日：2011-12-06
申请人： Vladimir Sindalovsky , Mohammad S. Mobin , Lane A. Smith , Amaresh V. Malipatil , Pervez M. Aziz
发明人： Vladimir Sindalovsky , Mohammad S. Mobin , Lane A. Smith , Amaresh V. Malipatil , Pervez M. Aziz
IPC分类号： H03H7/40
CPC分类号： H04L25/03057 , H04L2025/03636 , H04L2025/03694
摘要： In described embodiments, a Serializer-Deserializer (SerDes) receiver includes a pattern detector that allows for detection of insufficiently randomized pattern periods and low activity periods. A freeze of equalization adaptation during these periods might occur by embedding disqualifying patterns into adaptation data. Some embodiments also allow for detection of long intervals of freeze, and so delay a freeze de-assertion in order for a clock and data recovery (CDR) circuit of the receiver to regain lock to the serial data. Embedding freeze information in the receive data allows for precise synchronization of receive data and freeze.
摘要翻译：在所描述的实施例中，串行器解串器（SerDes）接收器包括模式检测器，其允许检测到不充分随机的模式周期和低活动期。在这些时期内冻结均衡适应可能会通过将不合格的模式嵌入到适应数据中来实现。一些实施例还允许检测长的冻结间隔，并且因此延迟冻结断言以便接收器的时钟和数据恢复（CDR）电路重新获得对串行数据的锁定。在接收数据中嵌入冻结信息可以精确地同步接收数据并进行冻结。

5. 发明授权

US08542031B2 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：US08542031B2
公开(公告)日：2013-09-24
申请号：US13304759
申请日：2011-11-28
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。

6. 发明授权

US08332528B2 Personal broadcast and content delivery engine 有权
标题翻译：个人广播和内容传送引擎
公开(公告)号：US08332528B2
公开(公告)日：2012-12-11
申请号：US12273128
申请日：2008-11-18
申请人： Dil Afroz Mobin , Mohammad S. Mobin , Gregory W. Sheets
发明人： Dil Afroz Mobin , Mohammad S. Mobin , Gregory W. Sheets
IPC分类号： G06F15/16
CPC分类号： H04N7/165 , H04N21/25808 , H04N21/26241 , H04N21/2625 , H04N21/41407 , H04N21/4143 , H04N21/4334
摘要： A communication system that enables a specified end-user device to obtain a media file corresponding to a delayed-play entry of a content-definition table prior to the scheduled play time. To deliver the media file to the end user, a service provider requests and receives the corresponding content from a content provider, generates the media file based on the received content, and temporarily stores the media file in a storage unit associated with the service provider. The service provider then breaks the media file into a plurality of data frames and transmits them to the end-user device during an appropriate delivery-opportunity window for storage in local storage unit (e.g., a hard drive) associated with the end-user device. At the play time, the service provider transmits to the end-user device a media-activation packet to initiate rendering thereat a copy of the media file assembled from the data frames stored in the local storage unit.
摘要翻译：一种通信系统，其使所指定的最终用户设备在所述预定播放时间之前获得与所述内容定义表的延迟播放条目相对应的媒体文件。为了将媒体文件传送到最终用户，服务提供商从内容提供商请求并接收对应的内容，基于接收到的内容生成媒体文件，并将媒体文件临时存储在与服务提供商相关联的存储单元中。然后，服务提供商将媒体文件分解成多个数据帧，并在适当的递送机会窗口期间将其传送到终端用户设备，以便存储在与最终用户设备相关联的本地存储单元（例如，硬盘驱动器）中。在播放时，服务提供商向最终用户设备发送媒体激活分组，以便从存储在本地存储单元中的数据帧组装的媒体文件的副本开始呈现。

7. 发明授权

US08107522B2 Methods and apparatus for determining receiver filter coefficients for a plurality of phases 有权
标题翻译：用于确定多个相位的接收机滤波器系数的方法和装置
公开(公告)号：US08107522B2
公开(公告)日：2012-01-31
申请号：US11870908
申请日：2007-10-11
申请人： Pervez M. Aziz , Mohammad S. Mobin , Lane A. Smith
发明人： Pervez M. Aziz , Mohammad S. Mobin , Lane A. Smith
IPC分类号： H03H7/30
CPC分类号： H04L1/205
摘要： Methods and apparatus are provided for determining receiver filter coefficients for a plurality of phases. One or more coefficients for a receiver filter are determined by determining a first coefficient for a first phase of a data eye; and determining a second coefficient for a second phase of the data eye. The receiver filter may be, for example, a decision-feedback equalizer. The first and second coefficients may be determined by performing an LMS adaptation of decision-feedback equalization coefficients. In another embodiment, the first and second coefficients may be determined by obtaining eye opening metrics from a data eye monitor corresponding to each of the respective first phase and the second phase; and determining the respective first and second coefficients based on the eye opening metrics. The first and second phases can correspond to odd and even phases.
摘要翻译：提供了用于确定多个相位的接收机滤波器系数的方法和装置。通过确定数据眼的第一阶段的第一系数来确定接收机滤波器的一个或多个系数; 以及确定所述数据眼睛的第二阶段的第二系数。接收机滤波器可以是例如判决反馈均衡器。可以通过执行判决反馈均衡系数的LMS适应来确定第一和第二系数。在另一个实施例中，可以通过从对应于相应的第一阶段和第二阶段中的每一个的数据眼睛监视器获得眼睛开度度量来确定第一和第二系数; 以及基于所述眼睛开度度量确定相应的第一和第二系数。第一和第二相可以对应于奇数和偶数相。

8. 发明授权

US08040984B2 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：US08040984B2
公开(公告)日：2011-10-18
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： H04L25/08 , H04L7/10 , 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。

9. 发明授权

US07869540B2 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：US07869540B2
公开(公告)日：2011-01-11
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： H04L25/49 , H04L25/03 , H04K1/02
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。

10. 发明申请

US20100244937A1 Compensation Techniques for Reducing Power Consumption in Digital Circuitry 有权
标题翻译：降低数字电路功耗的补偿技术
公开(公告)号：US20100244937A1
公开(公告)日：2010-09-30
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。

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