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1. 发明申请

US20130195154A1 Transmitter Adaptation Loop Using Adjustable Gain and Convergence Detection 有权
标题翻译：使用可调节增益和收敛检测的发射机适配环路
公开(公告)号：US20130195154A1
公开(公告)日：2013-08-01
申请号：US13360978
申请日：2012-01-30
申请人： Mohammad Mobin , Amaresh Malipatil , Adam Healey , Ye Liu
发明人： Mohammad Mobin , Amaresh Malipatil , Adam Healey , Ye Liu
IPC分类号： H04B1/38
CPC分类号： H04L12/6418
摘要： A communication port and method of adapting a transmit filter in the port to reduce receive errors by a receiver coupled to the transmit filter via a communication channel. The filter has coefficients that are adjusted in response to a first adaptation gain value, decision bits, and receiver error values. During a first time period, the coefficients are adjusted until changes in the coefficients are less than a first threshold amount. Then during a second time period, the coefficients are adjusted using a second adaptation gain value until changes in the coefficients are less than a second threshold amount. The second adaptation gain value is less than the first adaptation gain value and the second threshold amount being less than the first threshold amount. By using two or more adjustment periods with different gain values, the filter is adapted faster than using a single adjustment period with fixed adaptation gain.
摘要翻译：一种在端口中适配发射滤波器的通信端口和方法，用于通过通信信道减少接收器与发射滤波器的接收误差。滤波器具有响应于第一自适应增益值，判定位和接收器误差值而被调整的系数。在第一时间段期间，系数被调整直到系数的变化小于第一阈值量。然后在第二时间段期间，使用第二自适应增益值来调整系数，直到系数的变化小于第二阈值量。第二自适应增益值小于第一适应增益值，第二阈值量小于第一阈值量。通过使用具有不同增益值的两个或更多个调整周期，滤波器比使用具有固定自适应增益的单个调整周期更适合。

2. 发明授权

US08711906B2 Tracking data eye operating margin for steady state adaptation 有权
标题翻译：跟踪数据眼动操作裕度进行稳态调整
公开(公告)号：US08711906B2
公开(公告)日：2014-04-29
申请号：US12941217
申请日：2010-11-08
申请人： Mohammad Mobin , Ye Liu , Amaresh Malipatil
发明人： Mohammad Mobin , Ye Liu , Amaresh Malipatil
IPC分类号： H04B1/38 , H04L5/16
CPC分类号： H04L25/03012 , H04L2025/03439
摘要： In described embodiments, a transceiver includes an eye monitor and margin detector having one or more samplers with corresponding logic. One or more programmable provisioning parameters are defined based on a pre-defined minimum target operating margin for acceptable noise and jitter margins. For example, two programmable provisioning parameters, phase and voltage, correspond with thresholds for margin samplers placed within the eye. Initially, the transceiver applies equalization, after which an inner eye of the transceiver, as detected by the eye monitor, is relatively open with some margin for supporting channels. If the receiver margin goes below this target margin, the eye closes, which is registered by the samplers. In the presence of spectrally rich input data, if the receiver margin goes below this target margin, an updated adaptation of equalizer or other circuit parameters might be initiated; else, adaptation is not generally required.
摘要翻译：在所描述的实施例中，收发器包括具有具有相应逻辑的一个或多个采样器的眼睛监视器和边缘检测器。基于用于可接受的噪声和抖动余量的预定义的最小目标操作裕度来定义一个或多个可编程供应参数。例如，两个可编程供应参数（相位和电压）对应于放置在眼睛内的余量采样器的阈值。最初，收发机应用均衡，之后由眼睛监视器检测到的收发器的内眼相对开放，具有用于支持信道的一些余量。如果接收机边缘低于该目标边距，则眼睛关闭，由采样器注册。在存在频谱丰富的输入数据的情况下，如果接收器余量低于该目标余量，则可以启动更新的均衡器或其他电路参数的适配; 否则，通常不需要适应。

3. 发明授权

US08687682B2 Transmitter adaptation loop using adjustable gain and convergence detection 有权
标题翻译：使用可调增益和收敛检测的发射机适配环路
公开(公告)号：US08687682B2
公开(公告)日：2014-04-01
申请号：US13360978
申请日：2012-01-30
申请人： Mohammad Mobin , Amaresh Malipatil , Adam Healey , Ye Liu
发明人： Mohammad Mobin , Amaresh Malipatil , Adam Healey , Ye Liu
IPC分类号： H03K5/159 , H04B1/10
CPC分类号： H04L12/6418
摘要： A communication port and method of adapting a transmit filter in the port to reduce receive errors by a receiver coupled to the transmit filter via a communication channel. The filter has coefficients that are adjusted in response to a first adaptation gain value, decision bits, and receiver error values. During a first time period, the coefficients are adjusted until changes in the coefficients are less than a first threshold amount. Then during a second time period, the coefficients are adjusted using a second adaptation gain value until changes in the coefficients are less than a second threshold amount. The second adaptation gain value is less than the first adaptation gain value and the second threshold amount being less than the first threshold amount. By using two or more adjustment periods with different gain values, the filter is adapted faster than using a single adjustment period with fixed adaptation gain.
摘要翻译：一种在端口中适配发射滤波器的通信端口和方法，用于通过通信信道减少接收器与发射滤波器的接收误差。滤波器具有响应于第一自适应增益值，判定位和接收器误差值而被调整的系数。在第一时间段期间，系数被调整直到系数的变化小于第一阈值量。然后在第二时间段期间，使用第二自适应增益值来调整系数，直到系数的变化小于第二阈值量。第二自适应增益值小于第一适应增益值，第二阈值量小于第一阈值量。通过使用具有不同增益值的两个或更多个调整周期，滤波器比使用具有固定自适应增益的单个调整周期更适合。

4. 发明申请

US20130077669A1 Method of Compensating for Nonlinearity in a DFE-based Receiver 有权
标题翻译：在基于DFE的接收机中补偿非线性的方法
公开(公告)号：US20130077669A1
公开(公告)日：2013-03-28
申请号：US13244985
申请日：2011-09-26
申请人： Amaresh Malipatil , Mohammad Mobin , Pervez Aziz , Ye Liu
发明人： Amaresh Malipatil , Mohammad Mobin , Pervez Aziz , Ye Liu
IPC分类号： H04L27/01
CPC分类号： H04L25/03019 , H04L2025/03681 , H04L2025/037
摘要： A receiver has an input and a decision feedback equalizer (DFE). The DFE couples to the receiver input and has at least one tap coefficient. An input signal, having a first amplitude level insufficient to cause significant non-linear distortion in the receiver, is applied to the receiver input. After the DFE adapts to the applied input signal having the first amplitude level by adjusting the at least one tap coefficient, the adaptation process is stopped. Then the at least one tap coefficient is scaled by a factor α and the amplitude of input signal is adjusted to a second amplitude level greater than the first amplitude level by the scale factor α. Although the second amplitude level might be sufficient to cause significant non-linear distortion in the receiver, the scaled tap coefficient has the correct values for proper DFE operation in the presence of the non-linear distortion.
摘要翻译：接收机具有输入和判决反馈均衡器（DFE）。 DFE耦合到接收器输入，并具有至少一个抽头系数。具有不足以在接收机中引起显着的非线性失真的具有第一幅度电平的输入信号被施加到接收器输入端。在DFE通过调整至少一个抽头系数来适应具有第一幅度电平的所施加的输入信号之后，停止适配处理。然后，通过因子α对至少一个抽头系数进行缩放，并且将输入信号的幅度调整到大于第一幅度电平的比例因子α的第二幅度电平。虽然第二幅度电平可能足以在接收机中引起显着的非线性失真，但是在存在非线性失真的情况下，经缩放的抽头系数具有适当的DFE操作的正确值。

5. 发明申请

US20120230454A1 RECEIVER TRAINING WITH CYCLE SLIP DETECTION AND CORRECTION 有权
标题翻译：接收器训练与循环滑动检测和校正
公开(公告)号：US20120230454A1
公开(公告)日：2012-09-13
申请号：US13043908
申请日：2011-03-09
申请人： Mohammad Mobin , Mark Trafford , Ye Liu , Vladimir Sindalovsky , Amaresh Malipatil
发明人： Mohammad Mobin , Mark Trafford , Ye Liu , Vladimir Sindalovsky , Amaresh Malipatil
IPC分类号： H04L7/00
CPC分类号： H04L7/033 , H04L7/0083 , H04L2025/037
摘要： In described embodiments, a transceiver includes a clock and data recovery module (CDR) with an eye monitor and a cycle slip monitor. The cycle slip detector monitors a CDR lock condition, which might be through detection of slips in sampling and/or transition timing detection. The cycle slip detector provides a check point to sense system divergence, allowing for a mechanism to recover CDR lock. In addition, when the CDR is out-of-lock, the various parameters that are adaptively set (e.g., equalizer parameters) might be invalid during system divergence. Consequently, these parameters might be declared invalid by the system and not used.
摘要翻译：在所描述的实施例中，收发器包括具有眼睛监视器和周期滑移监视器的时钟和数据恢复模块（CDR）。循环滑移检测器监测CDR锁定状态，其可以通过在采样和/或转换定时检测中检测到滑移。循环滑移检测器提供检查点以感测系统发散，允许恢复CDR锁的机制。另外，当CDR超出锁定时，自适应设置的各种参数（例如，均衡器参数）在系统发散期间可能是无效的。因此，这些参数可能被系统声明为无效，未被使用。

6. 发明授权

US08705672B2 Method of compensating for nonlinearity in a DFE-based receiver 有权
标题翻译：在基于DFE的接收机中补偿非线性的方法
公开(公告)号：US08705672B2
公开(公告)日：2014-04-22
申请号：US13244985
申请日：2011-09-26
申请人： Amaresh Malipatil , Mohammad Mobin , Pervez Aziz , Ye Liu
发明人： Amaresh Malipatil , Mohammad Mobin , Pervez Aziz , Ye Liu
IPC分类号： H04L27/08
CPC分类号： H04L25/03019 , H04L2025/03681 , H04L2025/037
摘要： A receiver has an input and a decision feedback equalizer (DFE). The DFE couples to the receiver input and has at least one tap coefficient. An input signal, having a first amplitude level insufficient to cause significant non-linear distortion in the receiver, is applied to the receiver input. After the DFE adapts to the applied input signal having the first amplitude level by adjusting the at least one tap coefficient, the adaptation process is stopped. Then the at least one tap coefficient is scaled by a factor α and the amplitude of input signal is adjusted to a second amplitude level greater than the first amplitude level by the scale factor α. Although the second amplitude level might be sufficient to cause significant non-linear distortion in the receiver, the scaled tap coefficient has the correct values for proper DFE operation in the presence of the non-linear distortion.
摘要翻译：接收机具有输入和判决反馈均衡器（DFE）。 DFE耦合到接收器输入，并具有至少一个抽头系数。具有不足以在接收机中引起显着的非线性失真的具有第一幅度电平的输入信号被施加到接收器输入端。在DFE通过调整至少一个抽头系数来适应具有第一幅度电平的所施加的输入信号之后，停止适配处理。然后，通过因子α对至少一个抽头系数进行缩放，并且将输入信号的幅度调整到大于第一幅度电平的比例因子α的第二幅度电平。虽然第二幅度电平可能足以在接收机中引起显着的非线性失真，但是在存在非线性失真的情况下，经缩放的抽头系数具有适当的DFE操作的正确值。

7. 发明授权

US08605847B2 Receiver training with cycle slip detection and correction 有权
标题翻译：接收机训练与周期滑移检测和校正
公开(公告)号：US08605847B2
公开(公告)日：2013-12-10
申请号：US13043908
申请日：2011-03-09
申请人： Mohammad Mobin , Mark Trafford , Ye Liu , Vladimir Sindalovsky , Amaresh Malipatil
发明人： Mohammad Mobin , Mark Trafford , Ye Liu , Vladimir Sindalovsky , Amaresh Malipatil
IPC分类号： H04L7/00
CPC分类号： H04L7/033 , H04L7/0083 , H04L2025/037
摘要： In described embodiments, a transceiver includes a clock and data recovery module (CDR) with an eye monitor and a cycle slip monitor. The cycle slip detector monitors a CDR lock condition, which might be through detection of slips in sampling and/or transition timing detection. The cycle slip detector provides a check point to sense system divergence, allowing for a mechanism to recover CDR lock. In addition, when the CDR is out-of-lock, the various parameters that are adaptively set (e.g., equalizer parameters) might be invalid during system divergence. Consequently, these parameters might be declared invalid by the system and not used.
摘要翻译：在所描述的实施例中，收发器包括具有眼睛监视器和周期滑移监视器的时钟和数据恢复模块（CDR）。循环滑移检测器监测CDR锁定状态，其可以通过在采样和/或转换定时检测中检测到滑移。循环滑移检测器提供检查点以感测系统发散，允许恢复CDR锁的机制。另外，当CDR超出锁定时，自适应设置的各种参数（例如，均衡器参数）在系统发散期间可能是无效的。因此，这些参数可能被系统声明为无效，未被使用。

8. 发明申请

US20120114023A1 TRACKING DATA EYE OPERATING MARGIN FOR STEADY STATE ADAPTATION 有权
标题翻译：跟踪数据眼睛操作维护稳定状态适应
公开(公告)号：US20120114023A1
公开(公告)日：2012-05-10
申请号：US12941217
申请日：2010-11-08
申请人： Mohammad Mobin , Ye Liu , Amaresh Malipatil
发明人： Mohammad Mobin , Ye Liu , Amaresh Malipatil
IPC分类号： H04B17/00 , H04B1/38
CPC分类号： H04L25/03012 , H04L2025/03439
摘要： In described embodiments, a transceiver includes an eye monitor and margin detector having one or more samplers with corresponding logic. One or more programmable provisioning parameters are defined based on a pre-defined minimum target operating margin for acceptable noise and jitter margins. For example, two programmable provisioning parameters, phase and voltage, correspond with thresholds for margin samplers placed within the eye. Initially, the transceiver applies equalization, after which an inner eye of the transceiver, as detected by the eye monitor, is relatively open with some margin for supporting channels. If the receiver margin goes below this target margin, the eye closes, which is registered by the samplers. In the presence of spectrally rich input data, if the receiver margin goes below this target margin, an updated adaptation of equalizer or other circuit parameters might be initiated; else, adaptation is not generally required.
摘要翻译：在所描述的实施例中，收发器包括具有具有相应逻辑的一个或多个采样器的眼睛监视器和边缘检测器。基于用于可接受的噪声和抖动余量的预定义的最小目标操作裕度来定义一个或多个可编程供应参数。例如，两个可编程供应参数（相位和电压）对应于放置在眼睛内的余量采样器的阈值。最初，收发机应用均衡，之后由眼睛监视器检测到的收发器的内眼相对开放，具有用于支持信道的一些余量。如果接收机边缘低于该目标边距，则眼睛关闭，由采样器注册。在存在频谱丰富的输入数据的情况下，如果接收器余量低于该目标余量，则可以启动更新的均衡器或其他电路参数的适配; 否则，通常不需要适应。

9. 发明申请

US20100329325A1 Statistically-Adapted Receiver and Transmitter Equalization 有权
标题翻译：统计适应接收机和发射机均衡
公开(公告)号：US20100329325A1
公开(公告)日：2010-12-30
申请号：US12493513
申请日：2009-06-29
申请人： Mohammad Mobin , Ye Liu , Kenneth Paist , Mark Trafford
发明人： Mohammad Mobin , Ye Liu , Kenneth Paist , Mark Trafford
IPC分类号： H03H7/00
CPC分类号： H04L25/03057 , H04L25/03343
摘要： In described embodiments, adaptive equalization of a signal in, for example, Serializer/De-serializer transceivers by a) monitoring a data eye in a data path with an eye detector for signal amplitude and/or transition; b) setting the equalizer response of at least one equalizer in the signal path while the signal is present for statistical calibration of the data eye; c) monitoring the data eye and setting the equalizer during periods in which received data is allowed to contain errors (such as link initiation and training periods) and periods in which receive data integrity is to be maintained (such as normal data communication).
摘要翻译：在所描述的实施例中，通过以下步骤，在例如串行器/解串行器收发器中的信号的自适应均衡：a）用用于信号幅度和/或转换的眼睛检测器监测数据路径中的数据眼; b）设置信号路径中至少一个均衡器的均衡器响应，同时存在用于数据眼睛的统计校准的信号; c）在允许接收数据包含错误（例如链路发起和训练周期）的周期以及要保持接收数据完整性的时段（例如正常的数据通信）期间，监视数据眼睛并设置均衡器。

10. 发明申请

US20100329322A1 Real-Time Eye Monitor for Statistical Filter Parameter Calibration 有权
标题翻译：用于统计滤波器参数校准的实时眼监护仪
公开(公告)号：US20100329322A1
公开(公告)日：2010-12-30
申请号：US12493435
申请日：2009-06-29
申请人： Mohammad Mobin , Ye Liu , Kenneth Paist , Mark Trafford
发明人： Mohammad Mobin , Ye Liu , Kenneth Paist , Mark Trafford
IPC分类号： H04L27/01
CPC分类号： H04L27/01 , H04L25/03057 , H04L25/03082 , H04L25/03343 , H04L2025/03356 , H04L2025/03484 , H04L2025/03598 , H04L2025/03802
摘要： In described embodiments, filter parameters for a filter applied to a signal in, for example, a Serializer/De-serializer (SerDes) receiver and/or transmitter are generated based on real-time monitoring of a data eye. The real-time eye monitor monitors data eye characteristics of the signal present in a data path, the data path applying the filter to the signal. The eye monitor generates eye statistics from the monitored data eye characteristics and an adaptive controller generates a set of parameters for the filter of the data path for statistical calibration of the data eye, wherein the eye monitor continuously monitors the data eye and the adaptive controller continuously generates the set of parameters based on the eye statistics.
摘要翻译：在所描述的实施例中，基于对数据眼的实时监视来生成应用于例如串行器/解串器（SerDes）接收器和/或发射器中的信号的滤波器的滤波器参数。实时监视器监视数据路径中存在的信号的数据眼睛特征，数据路径将滤波器应用于信号。眼睛监护器根据监测的数据眼睛特征产生眼睛统计，并且自适应控制器生成用于数据路径的滤波器的一组参数以用于数据眼睛的统计校准，其中眼睛监视器连续监视数据眼睛和自适应控制器根据眼睛统计信息生成一组参数。

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