公开(公告)号：US08296347B2

公开(公告)日：2012-10-23

申请号：US11981565

申请日：2007-10-30

申请人： Mark Joseph Callicotte ,  Hiroshi Takatori

发明人： Mark Joseph Callicotte ,  Hiroshi Takatori

IPC分类号： G06F17/10

CPC分类号： H04L47/6245 ,  G06F1/10 ,  H03L7/00 ,  H04B3/32 ,  H04J3/0697 ,  H04L25/0278 ,  H04L43/16 ,  H04L47/25 ,  H04L47/521 ,  H04L47/6215 ,  H04L47/722

摘要： A method of optimizing filter performance through monitoring channel characteristics is provided. A signal enters a channel and a receiver receives the signal. The receiver includes a FIR filter to remove near-end transmitted interference and recover a far-end desired signal. The filter has storage elements configured as a shift registers to move the signal, multipliers to multiply the signal by a filter coefficient, an intermittent summer to combine the multiplied results into a replica of an interfering signal, a final summer to remove the replica from the receiver signal to provide direct and indirect monitoring of the signal, where direct monitoring includes time or frequency monitoring, and indirect monitoring includes monitoring signal to noise ratio, error magnitude or bit error rate. The filter is optimized according to monitoring and includes reducing a dynamic range, reducing bits of precision, reducing linearity, the filter, and reallocating the filter.

摘要翻译： 提供了一种通过监控通道特性来优化滤波器性能的方法。 一个信号进入一个通道，一个接收器接收信号。 接收机包括用于去除近端传输干扰并恢复远端期望信号的FIR滤波器。 滤波器具有配置为移位寄存器的存储元件，用于移动信号，乘法器将信号乘以滤波器系数，间歇夏季，以将相乘的结果合并为干扰信号的复制品，最后一个夏季从 接收机信号提供对信号的直接和间接监测，其中直接监视包括时间或频率监测，间接监测包括监测信噪比，误差幅度或误码率。 滤波器根据监控进行优化，包括减少动态范围，降低精度，降低线性度，滤波器和重新分配滤波器。

公开(公告)号：US07483479B2

公开(公告)日：2009-01-27

申请号：US10944168

申请日：2004-09-16

申请人： Mark Joseph Callicotte ,  Hiroshi Takatori

发明人： Mark Joseph Callicotte ,  Hiroshi Takatori

IPC分类号： H03K5/159

CPC分类号： H03H21/0067 ,  H03H21/0001 ,  H03H21/0012

摘要： An adaptive transversal filter having tap weights Wj which are products of corresponding tap coefficients Cj and tap gains Mj is provided. A filter control loop controls all of the tap coefficients Cj such that an error signal derived from the filter output is minimized. One or more tap control loops controls a tap gain Mk such that the corresponding tap coefficient Ck satisfies a predetermined control condition. For example, |Ck| can be maximized subject to a constraint |Ck|≦Cmax, where Cmax is a predetermined maximum coefficient value. In this manner, the effect of quantization noise on the coefficients Cj can be reduced. Multiple tap control loops can be employed, one for each tap. Alternatively, a single tap control loop can be used to control multiple taps by time interleaving.

摘要翻译： 提供具有作为对应抽头系数Cj和抽头增益Mj的乘积的抽头权重Wj的自适应横向滤波器。 滤波器控制环控制所有抽头系数Cj，使得从滤波器输出得到的误差信号最小化。 一个或多个抽头控制回路控制抽头增益Mk使得对应的抽头系数Ck满足预定的控制条件。 例如| Ck | 可以最大化受约束| Ck | <= Cmax，其中Cmax是预定的最大系数值。 以这种方式，可以减小量化噪声对系数Cj的影响。 可以采用多个抽头控制回路，每个抽头一个。 或者，可以使用单抽头控制回路来通过时间交织来控制多个抽头。

公开(公告)号：US20080275929A1

公开(公告)日：2008-11-06

申请号：US11981565

申请日：2007-10-30

申请人： Mark Joseph Callicotte ,  Hiroshi Takatori

发明人： Mark Joseph Callicotte ,  Hiroshi Takatori

IPC分类号： G06F17/10

CPC分类号： H04L47/6245 ,  G06F1/10 ,  H03L7/00 ,  H04B3/32 ,  H04J3/0697 ,  H04L25/0278 ,  H04L43/16 ,  H04L47/25 ,  H04L47/521 ,  H04L47/6215 ,  H04L47/722

摘要： A method of optimizing filter performance through monitoring channel characteristics is provided. A signal enters a channel and a receiver receives the signal. The receiver includes a FIR filter to remove near-end transmitted interference and recover a far-end desired signal. The filter has storage elements configured as a shift registers to move the signal, multipliers to multiply the signal by a filter coefficient, an intermittent summer to combine the multiplied results into a replica of an interfering signal, a final summer to remove the replica from the receiver signal to provide direct and indirect monitoring of the signal, where direct monitoring includes time or frequency monitoring, and indirect monitoring includes monitoring signal to noise ratio, error magnitude or bit error rate. The filter is optimized according to monitoring and includes reducing a dynamic range, reducing bits of precision, reducing linearity, the filter, and reallocating the filter.

摘要翻译： 提供了一种通过监控通道特性来优化滤波器性能的方法。 一个信号进入一个通道，一个接收器接收信号。 接收机包括用于去除近端传输干扰并恢复远端期望信号的FIR滤波器。 滤波器具有配置为移位寄存器的存储元件，用于移动信号，乘法器将信号乘以滤波器系数，间歇夏季，以将相乘的结果合并为干扰信号的复制品，最后一个夏季从 接收机信号提供对信号的直接和间接监测，其中直接监视包括时间或频率监测，间接监测包括监测信噪比，误差幅度或误码率。 滤波器根据监控进行优化，包括减少动态范围，降低精度，降低线性度，滤波器和重新分配滤波器。

公开(公告)号：US20060056502A1

公开(公告)日：2006-03-16

申请号：US10944168

申请日：2004-09-16

申请人： Mark Callicotte ,  Hiroshi Takatori

发明人： Mark Callicotte ,  Hiroshi Takatori

IPC分类号： H03K5/159

CPC分类号： H03H21/0067 ,  H03H21/0001 ,  H03H21/0012

摘要： An adaptive transversal filter having tap weights Wj which are products of corresponding tap coefficients Cj and tap gains Mj is provided. A filter control loop controls all of the tap coefficients Cj such that an error signal derived from the filter output is minimized. One or more tap control loops controls a tap gain Mk such that the corresponding tap coefficient Ck satisfies a predetermined control condition. For example, |Ck| can be maximized subject to a constraint |Ck|≦Cmax, where Cmax is a predetermined maximum coefficient value. In this manner, the effect of quantization noise on the coefficients Cj can be reduced. Multiple tap control loops can be employed, one for each tap. Alternatively, a single tap control loop can be used to control multiple taps by time interleaving.

摘要翻译： 提供了具有作为对应抽头系数C SUB和抽头增益M SUB的产品的抽头权重的自适应横向滤波器。 滤波器控制环控制所有抽头系数C SUB，使得从滤波器输出导出的误差信号最小化。 一个或多个抽头控制回路控制抽头增益M SUB，使得相应的抽头系数C k满足预定的控制条件。 例如，| C＆lt; k＆gt; | 可以受到约束的最大化;其中C max是预定的最大系数值。 以这种方式，可以减小量化噪声对系数C SUB的影响。 可以采用多个抽头控制回路，每个抽头一个。 或者，可以使用单抽头控制回路来通过时间交织来控制多个抽头。

公开(公告)号：US20050094722A1

公开(公告)日：2005-05-05

申请号：US10944470

申请日：2004-09-16

申请人： Hiroshi Takatori ,  James Little ,  Susumu Hara

发明人： Hiroshi Takatori ,  James Little ,  Susumu Hara

IPC分类号： G06F20060101 ,  H03H15/02 ,  H03K5/159

CPC分类号： H03H15/023

摘要： A finite impulse response filter having tap weight rotation is provided, where each tap has a corresponding coefficient selector. Each coefficient selector includes N coefficients, where N is the number of taps. Each coefficient selector provides one of its corresponding coefficients as an input to a multiplier. Each multiplier also receives an input from a triggered track and hold tap. The tap coefficients are selected according to the time delay since the corresponding track and hold tap was most recently triggered. In this manner, the tendency of multiplier gain nonuniformity to degrade filter operation in the presence of tap weight rotation is reduced. In another embodiment, an offset selector is provided, to reduce the tendency of component offsets to degrade filter operation in the presence of tap weight rotation.

摘要翻译： 提供了具有抽头权重旋转的有限脉冲响应滤波器，其中每个抽头具有对应的系数选择器。 每个系数选择器包括N个系数，其中N是抽头数。 每个系数选择器提供其相应系数之一作为乘法器的输入。 每个乘法器还从触发轨道接收输入并按住tap。 根据时间延迟选择抽头系数，因为相应的跟踪和保持分接头最近被触发。 以这种方式，在存在抽头重量旋转的情况下，乘法器增益不均匀性降低滤波器操作的趋势被减少。 在另一个实施例中，提供偏移选择器，以减少在存在抽头重量旋转时部件偏移降低过滤器操作的趋势。

公开(公告)号：US20050069394A1

公开(公告)日：2005-03-31

申请号：US10923321

申请日：2004-08-20

申请人： Kenneth Dyer ,  Hiroshi Takatori

发明人： Kenneth Dyer ,  Hiroshi Takatori

IPC分类号： H03H7/40 ,  H03M1/06 ,  H03M1/10 ,  H03M1/66 ,  H04L5/14 ,  B64C1/22

CPC分类号： H03M1/1009 ,  H03H7/40 ,  H03M1/0678 ,  H03M1/66 ,  H04L5/1423 ,  H04L25/0278

摘要： A hybrid system with adjustable on-chip components and a method calibrating the same invariably maximizes hybrid performance despite of on- and off-chip component mismatches and imperfections. The hybrid system has a main DAC, a replica DAC, and three or four resistors. Both DACs are directly connected to digital data. An adjustable resistor is connected to the main DAC and is calibrated such that output impedance is automatically adjusted to match an off-chip load impedance Z. A replica DAC current K is calibrated for optimum DC matching in presence of Z. An adjustable capacitor C2 is calibrated for slope-matching (bandwidth matching). If Z changes, the calibration procedure should be repeated for optimal performance. These three calibration mechanisms can be utilized individually or in combination. The present invention is compatible with both analog and digital echo-cancellers.

摘要翻译： 具有可调节片上组件的混合系统和校准该方法的方法总是使混合性能最大化，尽管片外组件不匹配和缺陷。 混合系统具有主DAC，复制DAC和三个或四个电阻器。 两个DAC都直接连接到数字数据。 可调电阻器连接到主DAC并被校准，使得输出阻抗被自动调整以匹配片外负载阻抗Z.复制DAC电流K被校准用于存在Z时的最佳DC匹配。可调电容器C2是 校准为斜率匹配（带宽匹配）。 如果Z改变，则应重复校准程序以获得最佳性能。 这三种校准机构可以单独使用或组合使用。 本发明与模拟和数字回波消除器兼容。

公开(公告)号：US06665337B1

公开(公告)日：2003-12-16

申请号：US09281860

申请日：1999-03-31

申请人： James Ward Girardeau, Jr. ,  Hiroshi Takatori

发明人： James Ward Girardeau, Jr. ,  Hiroshi Takatori

IPC分类号： H03H730

CPC分类号： H04L25/03019 ,  H04L2025/03745

摘要： An activation method for an adaptive equalization in a data transceiver having at least one adaptive filter for adaptive equalization of received sample signals, includes pre-loading a fixed set of coefficients on the at least one adaptive filter in initial activation of the data transceiver. The pre-loaded adaptive filter is allowed to adapt immediately after the activation of the data transceiver. Alternatively, the pre-loaded adaptive filter is allowed to adapt after the activation of the data transceiver and a period of time thereafter. The received timing and/or signals are recovered.

摘要翻译： 一种用于具有至少一个自适应滤波器的数据收发器中的自适应均衡的激活方法，用于对所接收的采样信号进行自适应均衡，包括在数据收发器的初始激活中对所述至少一个自适应滤波器预先固定的一组系数。 允许预加载自适应滤波器在数据收发器激活之后立即进行调整。 或者，允许预加载的自适应滤波器在数据收发器的激活之后适应一段时间。 接收的定时和/或信号被恢复。

公开(公告)号：US06229855B1

公开(公告)日：2001-05-08

申请号：US08917632

申请日：1997-08-22

申请人： Hiroshi Takatori ,  Ahmed F. Shalash

发明人： Hiroshi Takatori ,  Ahmed F. Shalash

IPC分类号： H04K102

CPC分类号： H04B3/08 ,  H04L1/0001

摘要： A method for controlling the power and/or frequency output of a digital data network's transmitters is described. The method controls the transmitter power and/or frequency output by using line loss information as well as the noise margin at both the central office and remote site sides of the transmission link. The transmitters are controlled to minimize the crosstalk between the interconnections on the network. Measurements are taken of the cable losses and signal-to-noise ratios present on the system and the transmitter power and/or frequency are adjusted to minimize unwanted interactions between transceiver pairs on the network.

摘要翻译： 描述了一种用于控制数字数据网络发射机的功率和/或频率输出的方法。 该方法通过使用线路损耗信息以及传输链路的中心局和远程站点侧的噪声容限来控制发射机功率和/或频率输出。 发射机被控制以最小化网络上互连之间的串扰。 测量系统上存在的电缆损耗和信噪比，并调整发射机功率和/或频率以最大限度地减少网络上收发器对之间的不必要的相互作用。

公开(公告)号：US08959132B2

公开(公告)日：2015-02-17

申请号：US13619597

申请日：2012-09-14

申请人： Mark Joseph Callicotte ,  Hiroshi Takatori

发明人： Mark Joseph Callicotte ,  Hiroshi Takatori

IPC分类号： G06F17/10 ,  H04B3/32 ,  G06F1/10 ,  H03L7/00 ,  H04J3/06

CPC分类号： H04L47/6245 ,  G06F1/10 ,  H03L7/00 ,  H04B3/32 ,  H04J3/0697 ,  H04L25/0278 ,  H04L43/16 ,  H04L47/25 ,  H04L47/521 ,  H04L47/6215 ,  H04L47/722

摘要： A method of optimizing filter performance through monitoring channel characteristics is provided. A signal enters a channel and a receiver receives the signal. The receiver includes a FIR filter to remove near-end transmitted interference and recover a far-end desired signal. The filter has storage elements configured as a shift registers to move the signal, multipliers to multiply the signal by a filter coefficient, an intermittent summer to combine the multiplied results into a replica of an interfering signal, a final summer to remove the replica from the receiver signal to provide direct and indirect monitoring of the signal, where direct monitoring includes time or frequency monitoring, and indirect monitoring includes monitoring signal to noise ratio, error magnitude or bit error rate. The filter is optimized according to monitoring and includes reducing a dynamic range, reducing bits of precision, reducing linearity, the filter, and reallocating the filter.

摘要翻译： 提供了一种通过监控通道特性来优化滤波器性能的方法。 一个信号进入一个通道，一个接收器接收信号。 接收机包括用于去除近端传输干扰并恢复远端期望信号的FIR滤波器。 滤波器具有配置为移位寄存器的存储元件，用于移动信号，乘法器将信号乘以滤波器系数，间歇夏季，以将相乘的结果合并为干扰信号的复制品，最后一个夏季从 接收机信号提供对信号的直接和间接监测，其中直接监视包括时间或频率监测，间接监测包括监测信噪比，误差幅度或误码率。 滤波器根据监控进行优化，包括减少动态范围，降低精度，降低线性度，滤波器和重新分配滤波器。

公开(公告)号：US08777458B2

公开(公告)日：2014-07-15

申请号：US13075359

申请日：2011-03-30

申请人： Akinobu Seki ,  Kyouhei Yamada ,  Noriyuki Kawahara ,  Hiroshi Takatori

发明人： Akinobu Seki ,  Kyouhei Yamada ,  Noriyuki Kawahara ,  Hiroshi Takatori

IPC分类号： F21V5/00 ,  F21V3/00

CPC分类号： G02B19/0028 ,  F21V5/08 ,  F21Y2115/10 ,  G02B19/0061

摘要： Disclosed is a light emitting device to reduce the number of components and elements of a light emitting device and a lighting device having the light emitting device, and simplify and miniaturize the structures of these devices. With this light flux controlling member (4), a total reflecting surface (12) functions like a reflecting member, light from a light emitting element (LED, for example) (3) that is incident from an input surface (13) and that arrives at the total reflecting surface (12) is total-reflected by the total reflecting surface (12) toward the output surface (11) side (including a first output surface (11a) and second output surface (11b)), and the illuminating light from the second output surface (11b) is superimposed upon the illuminating light from the first output surface (11a), so that the light from the light emitting element (LED, for example) (3) is used efficiently and illuminates the illumination target surface (6) over a wide range.

摘要翻译： 公开了一种用于减少发光器件的元件数量和具有发光器件的照明器件的发光器件，并且简化了这些器件的结构并使其小型化。 通过该光束控制部件（4），全反射面（12）的功能与反射部件相似，来自从输入面（13）入射的发光元件（LED）例如为3的光， 到达全反射面（12）的全反射面（12）朝向输出面（11）侧（包括第一输出面11a和第二输出面11b）全反射， 来自第二输出表面（11b）的光被叠加在来自第一输出表面（11a）的照明光上，使得有效地使用来自发光元件（例如LED）的光，并照亮照明目标 表面（6）在宽范围内。