公开(公告)号：US08498217B2

公开(公告)日：2013-07-30

申请号：US12835419

申请日：2010-07-13

申请人： Kishore Kota ,  Kadir Dinc ,  Ahmad Darabiha ,  Mehdi Tavassoli Kilani ,  Scott Powell ,  Tooraj Esmailian

发明人： Kishore Kota ,  Kadir Dinc ,  Ahmad Darabiha ,  Mehdi Tavassoli Kilani ,  Scott Powell ,  Tooraj Esmailian

IPC分类号： G01R31/08

CPC分类号： H04L27/01 ,  H04B15/00

摘要： Aspects of a method and system for adaptive tone cancellation for mitigating the effects of interference are provided. In this regard, an Ethernet PHY may receive one or more signals via a corresponding one or more physical channels and generate one or more estimate signals, each of which approximates interference present in a corresponding one of the received signals. The Ethernet PHY may subtract each one of the estimate signals from a corresponding one of the received signals. The subtracting may occur at the input of one or more slicers in the Ethernet PHY. The received signals may be processed via one or more equalizers in the Ethernet PHY. A decision output of a slicer in the Ethernet PHY may be subtracted from one of the said one or more received signals, and a signal resulting from the subtraction may be utilized to generate the one or more estimate signals.

摘要翻译： 提供了一种用于自适应音调消除的方法和系统，用于减轻干扰的影响。 在这方面，以太网PHY可以经由对应的一个或多个物理信道接收一个或多个信号，并且生成一个或多个估计信号，每个估计信号近似接收到的相应一个接收信号中存在的干扰。 以太网PHY可以从相应的一个接收信号中减去每个估计信号。 减法可能发生在以太网PHY中的一个或多个限幅器的输入端。 可以通过以太网PHY中的一个或多个均衡器来处理所接收的信号。 可以从所述一个或多个接收信号中的一个中减去以太网PHY中的限幅器的判定输出，并且可以利用由该减法产生的信号来产生一个或多个估计信号。

公开(公告)号：US20120002711A1

公开(公告)日：2012-01-05

申请号：US12835419

申请日：2010-07-13

申请人： Kishore Kota ,  Kadir Dinc ,  Ahmad Darabiha ,  Mehdi Tavassoli Kilani ,  Scott Powell ,  Tooraj Esmailian

发明人： Kishore Kota ,  Kadir Dinc ,  Ahmad Darabiha ,  Mehdi Tavassoli Kilani ,  Scott Powell ,  Tooraj Esmailian

IPC分类号： H04L27/01 ,  H04B1/10

CPC分类号： H04L27/01 ,  H04B15/00

摘要： Aspects of a method and system for adaptive tone cancellation for mitigating the effects of interference are provided. In this regard, an Ethernet PHY may receive one or more signals via a corresponding one or more physical channels and generate one or more estimate signals, each of which approximates interference present in a corresponding one of the received signals. The Ethernet PHY may subtract each one of the estimate signals from a corresponding one of the received signals. The subtracting may occur at the input of one or more slicers in the Ethernet PHY. The received signals may be processed via one or more equalizers in the Ethernet PHY. A decision output of a slicer in the Ethernet PHY may be subtracted from one of the said one or more received signals, and a signal resulting from the subtraction may be utilized to generate the one or more estimate signals.

摘要翻译： 提供了一种用于自适应音调消除的方法和系统，用于减轻干扰的影响。 在这方面，以太网PHY可以经由对应的一个或多个物理信道接收一个或多个信号，并且生成一个或多个估计信号，每个估计信号近似接收到的相应一个接收信号中存在的干扰。 以太网PHY可以从相应的一个接收信号中减去每个估计信号。 减法可能发生在以太网PHY中的一个或多个限幅器的输入端。 可以通过以太网PHY中的一个或多个均衡器来处理所接收的信号。 可以从所述一个或多个接收信号中的一个中减去以太网PHY中的限幅器的判定输出，并且可以利用由该减法产生的信号来产生一个或多个估计信号。

公开(公告)号：US08514951B2

公开(公告)日：2013-08-20

申请号：US12857303

申请日：2010-08-16

申请人： Mehdi Tavassoli Kilani ,  Scott Powell ,  Kadir Dinc ,  Kishore Kota ,  John Lock Creigh ,  Hooman Parizi

发明人： Mehdi Tavassoli Kilani ,  Scott Powell ,  Kadir Dinc ,  Kishore Kota ,  John Lock Creigh ,  Hooman Parizi

IPC分类号： H04L1/00

CPC分类号： H04B1/10 ,  H04L25/0274 ,  H04L25/0292 ,  H04L25/085

摘要： Aspects of a method and system for interference cancellation substantially as shown in and/or described in connection with at least one of the figures, as set forth more completely in the claims. In this regard, a receiver may be operable to receive a differential signal via a differential channel, and to sense a common mode signal on the differential channel. A frequency range in which interference is present in the common mode signal may be determined. The differential signal and the common mode signal may be filtered to attenuate frequencies outside the determined frequency range. A phase and/or amplitude of the filtered common mode signal may be adjusted based on the filtered differential signal and the adjusted and filtered common mode signal may be subtracted from the received differential signal. The common mode signal may be sensed via a pair of resistors coupled to the differential channel.

公开(公告)号：US20110069794A1

公开(公告)日：2011-03-24

申请号：US12857303

申请日：2010-08-16

申请人： Mehdi Tavassoli Kilani ,  Scott Powell ,  Kadir Dinc ,  Kishore Kota ,  John Creigh ,  Hooman Parizi

发明人： Mehdi Tavassoli Kilani ,  Scott Powell ,  Kadir Dinc ,  Kishore Kota ,  John Creigh ,  Hooman Parizi

IPC分类号： H04L1/00

CPC分类号： H04B1/10 ,  H04L25/0274 ,  H04L25/0292 ,  H04L25/085

摘要： Aspects of a method and system for interference cancellation substantially as shown in and/or described in connection with at least one of the figures, as set forth more completely in the claims. In this regard, a receiver may be operable to receive a differential signal via a differential channel, and to sense a common mode signal on the differential channel. A frequency range in which interference is present in the common mode signal may be determined. The differential signal and the common mode signal may be filtered to attenuate frequencies outside the determined frequency range. A phase and/or amplitude of the filtered common mode signal may be adjusted based on the filtered differential signal and the adjusted and filtered common mode signal may be subtracted from the received differential signal. The common mode signal may be sensed via a pair of resistors coupled to the differential channel.

摘要翻译： 如在权利要求中更全面地阐述的，基本上如附图中至少一个所示和/或描述的用于干扰消除的方法和系统的方面。 在这方面，接收机可以用于经由差分信道接收差分信号，并且用于感测差分信道上的共模信号。 可以确定在共模信号中存在干扰的频率范围。 差分信号和共模信号可以被滤波以衰减在所确定的频率范围之外的频率。 滤波后的共模信号的相位和/或幅度可以基于经滤波的差分信号进行调整，并且可以从所接收的差分信号中减去经调整和滤波的共模信号。 可以经由耦合到差分沟道的一对电阻来感测共模信号。

公开(公告)号：US08842767B2

公开(公告)日：2014-09-23

申请号：US12771722

申请日：2010-04-30

申请人： Tooraj Esmailian ,  Scott Powell ,  Chung Ming Tu ,  KuoRuey Han ,  Kadir Dinc ,  German Feyh

发明人： Tooraj Esmailian ,  Scott Powell ,  Chung Ming Tu ,  KuoRuey Han ,  Kadir Dinc ,  German Feyh

IPC分类号： H04B15/00

CPC分类号： H04L25/03146 ,  H04L25/03057

摘要： Methods and systems to substantially eliminate effects of EMI burst noise in an Ethernet system are provided herein. The method includes the step of computing and storing filter coefficients configured to adapt to a range of EMI frequencies. The method further comprises the step of receiving a signal and detecting EMI and frequency of the EMI in the received signal. The method further comprises selecting filter coefficients corresponding to the determined frequency of the detected EMI and adjusting a frequency response of one or more filters using the selected filter coefficients so as to substantially eliminate effects of the EMI in the received signal. The method further includes the step of sending filter coefficients to a link partner corresponding to the frequency of the detected EMI.

摘要翻译： 本文提供了在以太网系统中基本上消除EMI突发噪声影响的方法和系统。 该方法包括计算和存储被配置为适应EMI频率范围的滤波器系数的步骤。 该方法还包括在接收信号中接收信号并检测EMI和频率的步骤。 该方法还包括选择与所检测的EMI的所确定的频率对应的滤波器系数，并且使用所选择的滤波器系数调整一个或多个滤波器的频率响应，以便基本上消除接收信号中EMI的影响。 该方法还包括将滤波器系数发送到对应于检测到的EMI的频率的链路伙伴的步骤。

公开(公告)号：US09080992B2

公开(公告)日：2015-07-14

申请号：US13754767

申请日：2013-01-30

申请人： Mark S. Olsson ,  Scott Powell ,  Roger Shaffer ,  Stephanie Bench ,  Ray Merewhether ,  David Cox ,  Eric Chapman

发明人： Mark S. Olsson ,  Scott Powell ,  Roger Shaffer ,  Stephanie Bench ,  Ray Merewhether ,  David Cox ,  Eric Chapman

IPC分类号： G01N21/954 ,  H04N5/225 ,  H04N5/335 ,  G03B37/00 ,  H04N5/345 ,  H04N5/232

CPC分类号： G01N21/954 ,  G03B37/005 ,  H04N5/2252 ,  H04N5/2259 ,  H04N5/232 ,  H04N5/345 ,  H04N2005/2255

摘要： Camera heads configured to provide digitally articulated images or video, at adjustable resolutions and/or offsets and orientations, to a camera control unit (CCU) or other electronic computing system for display, storage, and/or transmission to other systems are disclosed.

摘要翻译： 公开了一种被配置为以可调节的分辨率和/或偏移和取向将数字关节式图像或视频提供给相机控制单元（CCU）或用于显示，存储和/或传输到其他系统的其他电子计算系统的相机头。

公开(公告)号：US09071328B2

公开(公告)日：2015-06-30

申请号：US13614725

申请日：2012-09-13

申请人： Scott Powell

发明人： Scott Powell

IPC分类号： H04B1/38 ,  H04B3/20 ,  H04B3/32 ,  H04L12/40

CPC分类号： H04B3/20 ,  H04B3/32 ,  H04L12/40032

摘要： Typical transceivers have multiple near-end and multiple far-end crosstalk cancellation filters. Crosstalk cancellation is one of the largest contributors to power dissipation in the DSP portion of high speed Ethernet transceivers. By detecting the cable type, a transceiver could automatically turn off its crosstalk cancellation filters when driving shielded twisted pair (STP) cables and substantially reduce the overall power dissipation in this configuration. Adaptive digital crosstalk cancellers automatically adjust the coefficients of a digital filter to match the coupling function between two channels. The impulse response of an optimal crosstalk cancellation filter can be used to determine a metric indicating the amount of coupling between the two channels. STP cables will have a much lower amount of coupling between wire-pairs than unshielded twisted pair cables.

摘要翻译： 典型的收发器具有多个近端和多个远端串扰消除滤波器。 串扰消除是高速以太网收发器DSP部分功耗最大的因素之一。 通过检测电缆类型，收发器可以在驱动屏蔽双绞线（STP）电缆时自动关闭其串扰消除滤波器，并在此配置中大大降低总体功耗。 自适应数字串扰消除器自动调整数字滤波器的系数以匹配两个通道之间的耦合功能。 可以使用最佳串扰消除滤波器的脉冲响应来确定指示两个信道之间的耦合量的度量。 STP电缆与非屏蔽双绞线电缆之间的线对耦合数量要少得多。

公开(公告)号：US09008244B2

公开(公告)日：2015-04-14

申请号：US12536172

申请日：2009-08-05

申请人： Mehmet Tazebay ,  Scott Powell ,  Peiqing Wang ,  Bruce Conway ,  Sang Bui

发明人： Mehmet Tazebay ,  Scott Powell ,  Peiqing Wang ,  Bruce Conway ,  Sang Bui

IPC分类号： H03D1/04 ,  H04B3/23 ,  H04B1/7097 ,  H04B3/32

CPC分类号： H04B1/12 ,  H04B1/7097 ,  H04B3/23 ,  H04B3/32

摘要： Communication devices coupled via a communication link may comprise physical layer devices that may be operable to determine presence of a received signal and to mitigate noise in the signal prior to processing and/or validating the signal. Analog and/or digital signal processing may be utilized to process the signal and/or mitigate noise in the signal. Noise mitigation may comprise near-end crosstalk cancelling and/or echo cancelling and/or may utilize local transmit signal information. Subsequent to noise mitigation, samples of the noise reduced signal may be accumulated and/or an average signal strength and/or average signal power level may be determined. The average signal strength and/or average signal power level may be compared to one or more thresholds which may be configurable and/or programmable.

公开(公告)号：US08769082B2

公开(公告)日：2014-07-01

申请号：US12508999

申请日：2009-07-24

申请人： Scott Powell ,  Peiqing Wang

发明人： Scott Powell ,  Peiqing Wang

IPC分类号： G06F15/173

CPC分类号： G06F1/3209 ,  H04L12/40039 ,  Y02D50/42

摘要： One or both link partners coupled via an Ethernet link may comprise a PHY device operable to initiate a wake-up interval. The PHY device may monitor parameters that may indicate Ethernet link status. Exemplary parameters may comprise a timer, communication performance metrics and/or configuration parameters. From a low power mode, the PHY device may generate a wake state idle symbol based on the monitoring and may communicate it to a local and/or a remote MAC. The local and/or remote MAC may establish a wake-up interval. The wake-up interval may comprise synchronization, circuit adaption and updating of communication parameters, which may enable control of noise cancellation functions and/or equalization functions. One or both of the link partners may transition to a low power mode after the wake-up interval and/or to an active state after the wake-up interval.

摘要翻译： 通过以太网链路耦合的一个或两个链路伙伴可以包括可操作以启动唤醒间隔的PHY设备。 PHY设备可以监视可能指示以太网链路状态的参数。 示例性参数可以包括定时器，通信性能度量和/或配置参数。 从低功率模式，PHY设备可以基于监视产生唤醒状态空闲符号，并且可以将其传送到本地和/或远程MAC。 本地和/或远程MAC可以建立唤醒间隔。 唤醒间隔可以包括通信参数的同步，电路适配和更新，其可以实现噪声消除功能和/或均衡功能的控制。 一个或两个链路伙伴可以在唤醒间隔之后转换到低功率模式和/或在唤醒间隔之后转换到活动状态。

公开(公告)号：US08520553B2

公开(公告)日：2013-08-27

申请号：US12944355

申请日：2010-11-11

申请人： Nariman Yousefi ,  Scott Powell

发明人： Nariman Yousefi ,  Scott Powell

IPC分类号： H04L12/28

CPC分类号： H04L12/12 ,  Y02D50/20 ,  Y02D50/40 ,  Y02D50/42

摘要： A system, method and apparatus for reducing a power consumed by a physical layer device (PHY). A length of a cable connecting the PHY to a link partner is determined. Based on the length, power provided to one or more components of the PHY, or any portion thereof, is reduced. The power provided is reduced while maintaining a level of reliability specified by a protocol governing operation of the PHY. The length can be determined using time-domain reflectometry (TDR) techniques. Any portion of an echo cancellation filter, a crosstalk filter, an equalizer, a precoder, an analog-to-digital converter (ADC), a digital-to-analog converter (DAC), a forward error correction (FEC) decoder and/or an FEC coder can be powered-down or power-optimized to reduce the overall power consumed by the PHY. The protocol governing operation of the PHY can be IEEE 802.3.

摘要翻译： 一种用于减少物理层设备（PHY）消耗的功率的系统，方法和装置。 确定将PHY连接到链路伙伴的电缆的长度。 基于长度，减少了提供给PHY的一个或多个组件或其任何部分的功率。 提供的功率降低，同时保持由控制PHY的操作的协议规定的可靠性水平。 可以使用时域反射（TDR）技术确定长度。 回波消除滤波器，串扰滤波器，均衡器，预编码器，模数转换器（ADC），数模转换器（DAC），前向纠错（FEC）解码器和/ 或者可以对FEC编码器进行掉电或功率优化，以减少PHY消耗的总体功耗。 控制PHY的操作的协议可以是IEEE 802.3。