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1. 发明授权

US09369231B2 Dynamic adjustment of transfer characteristics as a function of channel characteristics 有权
公开(公告)号：US09369231B2
公开(公告)日：2016-06-14
申请号：US11330324
申请日：2006-01-12
申请人： Kevin Brown , Scott R. Powell , Gottfried Ungerboeck
发明人： Kevin Brown , Scott R. Powell , Gottfried Ungerboeck
IPC分类号： H04B3/00 , H04L1/00 , H04L1/24 , H01R9/03 , H04L25/02
CPC分类号： H04L1/0002 , H01R9/035 , H01R2201/04 , H04L1/24 , H04L25/0264
摘要： A method, system and computer program product to adjust transfer rates on conductors in a multi-conductor cable comprising monitoring signals received on each conductor, determining a Signal to Noise Ratio (SNR) for each conductor and adjusting a transfer rate on one or more conductors based on the corresponding SNR. In an embodiment the multi-conductor cable is a twisted pair Ethernet cable. The method further comprises determining whether a conductor is transmitting at an optimal transfer rate as a function of its SNR, calculating an optimal transfer rate for each conductor as a function of its SNR and periodically measuring a change in SNR on each conductor. If the change in SNR is greater than a predetermined threshold, then the transfer rate is re-calculated for the conductors requiring transfer rate adjustment as a function of SNR.

2. 发明授权

US08995507B2 Transceiver self-diagnostics for electromagnetic interference (EMI) degradation in balanced channels 有权
标题翻译：收发器自诊断平衡通道中的电磁干扰（EMI）降级
公开(公告)号：US08995507B2
公开(公告)日：2015-03-31
申请号：US13218594
申请日：2011-08-26
申请人： Scott R. Powell , Mehmet V. Tazebay
发明人： Scott R. Powell , Mehmet V. Tazebay
IPC分类号： H04B1/38 , H04B3/00 , H04L25/03 , H04L25/02
CPC分类号： H04B3/46 , H04L25/0274 , H04L25/03885
摘要： Transceiver self-diagnostics for electromagnetic interference (EMI) degradation in balanced channels. Selective operation of transmitting a common mode signal from a communication link implemented for supporting differential signaling, and appropriate processing of any detected signal energy, such as that corresponding to differential signal energy, provides a measure of electromagnetic compatibility (EMC) corresponding to the communication link. Comparison of detected differential signal energy to one or more thresholds may provide indication of whether or not the communication link is balanced or unbalanced, a degree or margin with which the communication link is compliant in accordance with EMC in accordance with one or more protocols, standards, or recommended practices. Multiple successive measurements of detected differential signal energy may be used to determine a trend of performance, such as whether or not the communication link is trending toward imbalance, failure, or noncompliance.
摘要翻译：收发器自诊断平衡通道中的电磁干扰（EMI）降级。从实施用于支持差分信号的通信链路发送共模信号的选择性操作，以及诸如对应于差分信号能量的任何检测到的信号能量的适当处理提供了对应于通信链路的电磁兼容性（EMC）的测量。检测到的差分信号能量与一个或多个阈值的比较可以提供通信链路是否平衡或不平衡的指示，根据一个或多个协议标准，通信链路根据EMC符合的程度或裕度或推荐做法。可以使用检测到的差分信号能量的多个连续测量来确定性能趋势，例如通信链路是否趋向于不平衡，故障或不兼容。

3. 发明授权

US5162801A Low noise switched capacitor digital-to-analog converter 失效
标题翻译：低噪声开关电容数模转换器
公开(公告)号：US5162801A
公开(公告)日：1992-11-10
申请号：US801145
申请日：1991-12-02
申请人： Scott R. Powell , Anthony G. Mellissinos
发明人： Scott R. Powell , Anthony G. Mellissinos
IPC分类号： H03M1/08 , H03M1/74 , H03M1/76
CPC分类号： H03M1/765
摘要： A low-noise switched-capacitor DAC converts an integer number from an N-bit digital format into an analog voltage level by transferring charge between two appropriately ratioed capacitors using a plurality of switches. The switches select only an appropriate one of a plurality of capacitors to connect to an operational amplifier in accordance with any digital input. The sampled kT/C noise and switch charge injection from an N-bit DAC is thus beneficially reduced.
摘要翻译：低噪声开关电容DAC通过使用多个开关在两个适当比例的电容器之间传输电荷，将整数从N位数字格式转换为模拟电压电平。开关仅根据任何数字输入选择多个电容器中适当的一个以连接到运算放大器。因此，有利地减少了来自N位DAC的采样kT / C噪声和开关电荷注入。

4. 发明申请

US20120314794A1 Transceiver self-diagnostics for electromagnetic interference (EMI) degradation in balanced channels 有权
标题翻译：收发器自诊断平衡通道中的电磁干扰（EMI）降级
公开(公告)号：US20120314794A1
公开(公告)日：2012-12-13
申请号：US13218594
申请日：2011-08-26
申请人： Scott R. Powell , Mehmet V. Tazebay
发明人： Scott R. Powell , Mehmet V. Tazebay
IPC分类号： H04B15/00
CPC分类号： H04B3/46 , H04L25/0274 , H04L25/03885
摘要： Transceiver self-diagnostics for electromagnetic interference (EMI) degradation in balanced channels. Selective operation of transmitting a common mode signal from a communication link implemented for supporting differential signaling, and appropriate processing of any detected signal energy, such as that corresponding to differential signal energy, provides a measure of electromagnetic compatibility (EMC) corresponding to the communication link. Comparison of detected differential signal energy to one or more thresholds may provide indication of whether or not the communication link is balanced or unbalanced, a degree or margin with which the communication link is compliant in accordance with EMC in accordance with one or more protocols, standards, or recommended practices. Multiple successive measurements of detected differential signal energy may be used to determine a trend of performance, such as whether or not the communication link is trending toward imbalance, failure, or noncompliance.
摘要翻译：收发器自诊断平衡通道中的电磁干扰（EMI）降级。从实施用于支持差分信号的通信链路发送共模信号的选择性操作，以及诸如对应于差分信号能量的任何检测到的信号能量的适当处理提供了对应于通信链路的电磁兼容性（EMC）的测量。检测到的差分信号能量与一个或多个阈值的比较可以提供通信链路是否平衡或不平衡的指示，根据一个或多个协议标准，通信链路根据EMC符合的程度或裕度或推荐做法。可以使用检测到的差分信号能量的多个连续测量来确定性能趋势，例如通信链路是否趋向于不平衡，故障或不兼容。

5. 发明授权

US07627026B2 Threshold setting using piecewise linear approximation for channel diagnostic systems 失效
标题翻译：使用分段线性近似的通道诊断系统的阈值设置
公开(公告)号：US07627026B2
公开(公告)日：2009-12-01
申请号：US11094318
申请日：2005-03-31
申请人： Peiqing Wang , Scott R. Powell
发明人： Peiqing Wang , Scott R. Powell
IPC分类号： H04B3/46
CPC分类号： H04B3/46 , H04M3/002 , H04M3/28
摘要： A method and apparatus for detecting faults in cables. The invention comprises computing a plurality of thresholds representing a corresponding plurality of values of reflections in the cable; comparing a received reflection to a given threshold; if the received reflection value is greater than the given threshold value, then determining the location of the cable fault; and if the received reflection is not greater than the given threshold value, then taking no further action.
摘要翻译：一种用于检测电缆故障的方法和装置。本发明包括计算表示电缆中相应多个反射值的多个阈值; 将接收到的反射与给定阈值进行比较; 如果接收到的反射值大于给定的阈值，则确定电缆故障的位置; 并且如果接收到的反射不大于给定的阈值，则不采取进一步的动作。

6. 发明授权

US5121335A Method and apparatus for verifying microcircuit fabrication procedure 失效
标题翻译：验证微波炉制造程序的方法和装置
公开(公告)号：US5121335A
公开(公告)日：1992-06-09
申请号：US477690
申请日：1990-02-09
申请人： Bennett J. Barouch , Scott R. Powell
发明人： Bennett J. Barouch , Scott R. Powell
IPC分类号： H01L21/26 , B65G61/00 , G05B19/418 , G06F17/50 , G06Q50/00 , H01L27/02
CPC分类号： H01L27/02
摘要： An apparatus is used to perform a fabrication procedure on a microcircuit under control of specification data. In a preferred embodiment of the invention, the procedure includes making relatively undetectable modifications to the microcircuit using a focussed ion beam to deter unauthorized reproduction and/or use of the microcircuit. The output of the apparatus is tapped during the procedure to generate record data of the signals actually applied to control the focussed ion beam to perform the procedure. The record data is written into at least one verification data storage area of the microcircuit, preferably using the focussed ion beam. During testing of the microcircuit, the generated data which was written into the storage area is read out and compared with the specification data. Proper performance of the procedure is verified if the specification data and record data correspond to each other.

7. 发明授权

US07627025B2 Echo canceller gain control for channel diagnostic systems 失效
标题翻译：通道诊断系统的回波消除器增益控制
公开(公告)号：US07627025B2
公开(公告)日：2009-12-01
申请号：US11094314
申请日：2005-03-31
申请人： Peiqing Wang , Scott R. Powell
发明人： Peiqing Wang , Scott R. Powell
IPC分类号： H04B3/46
CPC分类号： H04B3/46
摘要： A method and apparatus for detecting faults in cables. The method and apparatus comprise receiving a reflected signal; multiplying an estimation of the reflected signal from an echo canceller by a predetermined gain factor; subtracting the value obtained as a result of the multiplication from the received reflected signal; and generating an error signal to adapt the echo canceller tap weight to match the real received reflected signal.
摘要翻译：一种用于检测电缆故障的方法和装置。所述方法和装置包括接收反射信号; 将来自回波消除器的反射信号的估计乘以预定增益因子; 从所接收的反射信号中减去作为乘法结果获得的值; 并产生误差信号以使回波消除器抽头权重适应于实际接收的反射信号。

8. 发明申请

US20080104158A1 Implementation of adaptive filters of reduced complexity 审中-公开
标题翻译：实现降低复杂度的自适应滤波器
公开(公告)号：US20080104158A1
公开(公告)日：2008-05-01
申请号：US11586111
申请日：2006-10-25
申请人： Arash Farhoodfar , Scott R. Powell , Peiqing Wang
发明人： Arash Farhoodfar , Scott R. Powell , Peiqing Wang
IPC分类号： G06F17/14
CPC分类号： H03H21/0027 , H04L2025/03477
摘要： Herein described is at least a method for implementing an adaptive digital filter of reduced implementation complexity. The method comprises computing at least one complex discrete Fourier transform of a complex data sequence using approximately one-half the number of points used in computing said discrete Fourier transform of a real valued sequence. Further, herein described is an adaptive digital filter of reduced implementation complexity. The adaptive digital filter comprises at least one circuitry for computing a complex discrete Fourier transform of a complex data sequence using approximately one-half the number of points used in computing the discrete Fourier transform of a real valued sequence. The adaptive digital filter may be employed in a 10 Gbit/sec Ethernet transceiver.
摘要翻译：这里描述了至少一种用于实现降低的实现复杂度的自适应数字滤波器的方法。该方法包括使用计算实值序列的所述离散傅立叶变换中使用的大约一半数量的点来计算复数数据序列的至少一个复数离散付里叶变换。此外，这里描述的是具有降低的实现复杂度的自适应数字滤波器。自适应数字滤波器包括至少一个电路，用于使用计算实值序列的离散傅立叶变换中使用的大约一半数量的点来计算复数数据序列的复数离散付里叶变换。自适应数字滤波器可用于10 Gbit / s以太网收发器。

9. 发明授权

US4751407A Self-timing circuit 失效
标题翻译：自定时电路
公开(公告)号：US4751407A
公开(公告)日：1988-06-14
申请号：US943353
申请日：1986-12-19
申请人： Scott R. Powell
发明人： Scott R. Powell
IPC分类号： G11C7/00 , G11C7/22 , H03K5/15 , H03K19/096 , H03K19/177 , H03K19/00
CPC分类号： H03K5/15013 , G11C7/22 , H03K19/0963 , H03K19/1772
摘要： A timing circuit is disclosed for use with an external circuit that provides a precharge/evaluation complete signal indicative of precharge completion and evaluation completion. The timing circuit is responsive to a clock signal and the precharge/evaluation complete signal provided by the external circuit, and includes a clock enabling circuit responsive to the clock signal and the precharge/evaluation complete signal for providing a clock enable signal having first and second states respectively indicative of (a) a predetermined condition wherein evaluation has been completed and the clock signal is at a predetermined level, and (b) precharge completion. A level shifting circuit is responsive to the clock signal and the clock enable signal and provides a phase control signal to the pseudo CMOS circuit, where such phase control signal defines (a) a precharge phase in response to said clock enable signal indicating the predetermined condition and the clock signal providing a predetermined transition, and (b) an evaluation phase in response to the precharge/evaluation complete signal indicating completion of precharging. A latching circuit is responsive to the clock enable signal and the clock signal for selectively latching the phase control signal in its respective phases.
摘要翻译：公开了一种与提供表示预充电完成和评估完成的预充电/评估完成信号的外部电路一起使用的定时电路。定时电路响应于由外部电路提供的时钟信号和预充电/评估完成信号，并且包括响应于时钟信号和预充电/评估完成信号的时钟使能电路，用于提供具有第一和第二时钟的时钟使能信号分别指示（a）其中评估已经完成并且时钟信号处于预定电平的预定条件，以及（b）预充电完成。电平移位电路响应于时钟信号和时钟使能信号，并向伪CMOS电路提供相位控制信号，其中这种相位控制信号定义（a）响应于表示预定条件的所述时钟使能信号的预充电阶段并且所述时钟信号提供预定的转换，以及（b）响应于表示预充电完成的预充电/评估完成信号的评估阶段。锁存电路响应于时钟使能信号和时钟信号，用于选择性地将相位控制信号锁定在各自的相位中。

10. 发明授权

US07636388B2 Channel fault detection for channel diagnostic systems 有权
标题翻译：通道诊断系统的通道故障检测
公开(公告)号：US07636388B2
公开(公告)日：2009-12-22
申请号：US11094273
申请日：2005-03-31
申请人： Peiqing Wang , Scott R. Powell
发明人： Peiqing Wang , Scott R. Powell
IPC分类号： H04B3/46
CPC分类号： H04M3/085 , H04B3/46
摘要： A method and computer program product for detecting faults in cables. The invention comprises receiving a first reflected signal; comparing the first reflected signal amplified with a first predetermined receiver gain setting with a first threshold; if the value of the amplified first reflected signal is greater than the value of the first threshold, then terminating detecting; if the value of the amplified first reflected signal is not greater than the value of the first threshold, then comparing a second reflected signal amplified with a second predetermined gain setting different from the first gain setting with a second threshold.
摘要翻译：一种用于检测电缆故障的方法和计算机程序产品。本发明包括接收第一反射信号; 将放大的第一反射信号与第一预定接收机增益设置与第一阈值进行比较; 如果放大的第一反射信号的值大于第一阈值的值，则终止检测; 如果放大的第一反射信号的值不大于第一阈值的值，则将与第一增益设置不同的第二预定增益设置放大的第二反射信号与第二阈值进行比较。

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