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公开(公告)号：US07746924B2
公开(公告)日：2010-06-29
申请号：US11430692
申请日：2006-05-09
CPC分类号： H03H21/0027
摘要： For a given channel and a filter having at least one filter tap, a set of at least one weight value is determined for the at least one filter tap according to which at least one weight value substantially minimizes a gradient of a frequency response for the given channel and substantially maximizes energy of the frequency response for the given channel within a predetermined bandwidth.
摘要翻译： 对于给定的信道和具有至少一个滤波器抽头的滤波器，确定至少一个滤波器滤波器的至少一个权重值的集合，根据该滤波器抽头，至少一个权重值基本上使给定的频率响应的梯度最小化 并且在预定带宽内基本上最大化给定信道的频率响应的能量。
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公开(公告)号：US06798254B2
公开(公告)日：2004-09-28
申请号：US10447929
申请日：2003-05-29
IPC分类号： H03K522
CPC分类号： H03K5/08 , H04L25/063
摘要： A reference voltage is moved dynamically towards a voltage level of the last received value. The movement takes place over a predetermined fraction of a bit-time. The amount of movement is limited so that successive logical values don't result in an unusable reference voltage level. When the output of a receiver changes, a state machine sequences the selection of analog reference voltage inputs to a multiplexer to move an output reference voltage towards a steady-state signal voltage level for the value that was just received. When the sequence is complete, the state machine keeps the last value selected on the output until the output of the receiver changes value.
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公开(公告)号：US06756862B2
公开(公告)日：2004-06-29
申请号：US10177042
申请日：2002-06-21
IPC分类号： H01P512
CPC分类号： H01P5/12
摘要： A six-drop bus has each driver or receiver terminated at the characteristic impedance of Z0. Each driver or receiver is connected to a segment of transmission line with a characteristic impedance of Z0. Three of these segments are connected at a first point. The other three of these segments are connected at a second point. The first and second points are connected by a central transmission line with a characteristic impedance of Z0/3.
摘要翻译： 六分母线的每个驱动器或接收器以Z0的特性阻抗终止。 每个驱动器或接收器连接到具有Z0特性阻抗的传输线段。 这些段中的三个在第一点连接。 这些段中的其他三个在第二点连接。 第一点和第二点由具有Z0 / 3特性阻抗的中心传输线连接。
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4.发明授权Computer program product and method of simulating circuits using a balanced, lossy, transmission line circuit model 有权计算机程序产品和模拟电路的方法采用均衡，有损耗的传输线电路模型公开(公告)号：US07212960B2
公开(公告)日：2007-05-01
申请号：US10365808
申请日：2003-02-13
申请人： David W. Quint , Karl Joseph Bois
发明人： David W. Quint , Karl Joseph Bois
IPC分类号： G06F17/50
CPC分类号： G06F17/5036
摘要： A computer program product and method of simulation involve the present computer simulation model of a lossy transmission line. The model uses a hybrid model at each end of the transmission line, each hybrid model coupled to a port of the transmission line. Each hybrid model is coupled to a forward path model and a reverse path model, such that simulated signals pass through the forward path mode enroute from a first hybrid to the second hybrid, and through the reverse path model enroute from the second hybrid to the first hybrid. At each end of the transmission line there is also a reflection model coupling between the reverse path model and the forward path model.
摘要翻译： 计算机程序产品和模拟方法涉及有损传输线的本计算机仿真模型。 该模型在传输线的每一端使用混合模型，每个混合模型耦合到传输线的端口。 每个混合模型耦合到前向路径模型和反向路径模型，使得模拟信号通过正向路径模型从第一混合到第二混合，并且通过从第二混合到第一混合的反向路径模型 混合 在传输线的每一端，还有反向路径模型和前向路径模型之间的反射模型。
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5.发明授权Passive redundant digital data receiver with dual comparator edge detection 失效无源冗余数字数据接收机，具有双比较器边缘检测功能公开(公告)号：US07136429B2
公开(公告)日：2006-11-14
申请号：US10267438
申请日：2002-10-08
IPC分类号： H03K9/00
CPC分类号： H04L25/069
摘要： A passive coupling structure constructed using printed circuit board traces is used to separate the low and high frequency components of an incoming digital signal. The low and high frequency components of the signal are sent to separate receivers on an integrated circuit. The low frequency receiver may be a conventional level based receiver. The high frequency receiver is a Schmitt-trigger with hysteresis around a DC level or two comparators with separate reference voltages. The outputs of these receivers are combined to produce a receiver output that has increased reliability and noise immunity.
摘要翻译： 使用印刷电路板迹线构建的无源耦合结构用于分离输入数字信号的低频和高频分量。 信号的低频和高频分量被发送到集成电路上的分离接收器。 低频接收机可以是基于传统级别的接收机。 高频接收器是一个施密特触发器，具有直流电平周围的滞后或两个具有单独参考电压的比较器。 这些接收机的输出被组合以产生具有增加的可靠性和抗噪声能力的接收器输出。
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公开(公告)号：US07068734B2
公开(公告)日：2006-06-27
申请号：US10267156
申请日：2002-10-08
IPC分类号： H03K9/00
CPC分类号： H04L25/45 , H03K5/082 , H04L25/0292 , H04L25/08
摘要： A passive coupling structure constructed using printed circuit board traces is used to separate the low and high frequency components of an incoming digital signal. The low and high frequency components of the signal are sent to separate receivers on an integrated circuit. The low frequency receiver may be a conventional level based receiver. The high frequency receiver is a Schmitt-trigger with hysteresis around a DC level or two comparators with separate reference voltages. The outputs of these receivers are combined to produce a receiver output that has increased reliability and noise immunity.
摘要翻译： 使用印刷电路板迹线构建的无源耦合结构用于分离输入数字信号的低频和高频分量。 信号的低频和高频分量被发送到集成电路上的分离接收器。 低频接收机可以是基于传统级别的接收机。 高频接收器是一个施密特触发器，具有直流电平周围的滞后或两个具有单独参考电压的比较器。 这些接收机的输出被组合以产生具有增加的可靠性和抗噪声能力的接收器输出。
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7.发明授权System and method for determining a dielectric property associated with a substrate 失效用于确定与衬底相关的介电性质的系统和方法公开(公告)号：US06873162B1
公开(公告)日：2005-03-29
申请号：US10701544
申请日：2003-11-05
申请人： Karl Joseph Bois , David W. Quint , Michael Tsuk , Brian Kirk
发明人： Karl Joseph Bois , David W. Quint , Michael Tsuk , Brian Kirk
CPC分类号： G01R27/2694 , H05K1/024
摘要： A system and method for determining the dielectric properties associated with a substrate. In one embodiment, a network analyzer measures scattering parameters for at least two lines of substantially identical cross-section embedded within the substrate over a specified frequency range. A first engine determines a complex propagation constant based on the scattering parameters and defines the complex propagation constant in terms of an attenuation component and a phase component. A second engine, responsive to the phase component, determines a relative permittivity parameter associated with the substrate over the specified frequency range. A third engine, responsive to the attenuation component and the relative permittivity parameter, performs a least squares analysis to determine a loss tangent parameter associated with the substrate over the specified frequency range.
摘要翻译： 用于确定与衬底相关的介电性质的系统和方法。 在一个实施例中，网络分析器测量在特定频率范围内嵌入在衬底内的至少两条基本相同的横截面线的散射参数。 第一引擎基于散射参数确定复传播常数，并根据衰减分量和相位分量来定义复传播常数。 响应于相位分量的第二发动机确定与指定频率范围上的衬底相关联的相对介电常数参数。 响应于衰减分量和相对介电常数参数的第三引擎执行最小二乘法分析以确定与指定频率范围上的衬底相关的损耗切线参数。
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公开(公告)号：US06744332B2
公开(公告)日：2004-06-01
申请号：US10176833
申请日：2002-06-21
IPC分类号： H01P512
CPC分类号： H01P5/12
摘要： A four-drop bus has each driver or receiver terminated at the characteristic impedance of Z0. Each driver or receiver is connected to a segment of transmission line with a characteristic impedance of Z0. Two of these segments are connected at a first point. The other two of these segments are connected at a second point. The first and second points are connected by a central transmission line with a characteristic impedance of Z0/2.
摘要翻译： 四路总线的每个驱动器或接收器终止于Z0的特性阻抗。 每个驱动器或接收器连接到具有Z0特性阻抗的传输线段。 这些段中的两个在第一点连接。 这些段中的另外两个在第二点连接。 第一点和第二点通过中心传输线连接，特性阻抗为Z0 / 2。
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公开(公告)号：US20080196933A1
公开(公告)日：2008-08-21
申请号：US12148017
申请日：2008-04-16
CPC分类号： H05K3/4688 , H05K1/024 , H05K2201/015 , H05K2201/0195 , H05K2201/0715 , H05K2201/09672 , H05K2201/09881 , Y10T29/49124
摘要： A printed circuit board (PCB) substrate and method for construction of the same. In one embodiment, a first dielectric material is associated with a first current return layer and a second dielectric material is associated with a second current return layer. A first signal path layer is embedded in the first dielectric material and a second signal path layer is embedded in the second dielectric material, wherein the first and second signal path layers are substantially parallel to each other in a stack-up arrangement. An adhesive layer is interposed between the first dielectric material and the second dielectric material.
摘要翻译： 印刷电路板（PCB）基板及其构造方法。 在一个实施例中，第一电介质材料与第一电流返回层相关联，并且第二电介质材料与第二电流返回层相关联。 第一信号通路层被嵌入在第一电介质材料中，第二信号路径层被嵌入在第二电介质材料中，其中第一和第二信号通路层以叠层布置基本上彼此平行。 在第一电介质材料和第二电介质材料之间插入粘合剂层。
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公开(公告)号：US07378598B2
公开(公告)日：2008-05-27
申请号：US10782640
申请日：2004-02-19
CPC分类号： H05K3/4688 , H05K1/024 , H05K2201/015 , H05K2201/0195 , H05K2201/0715 , H05K2201/09672 , H05K2201/09881 , Y10T29/49124
摘要： A printed circuit board (PCB) substrate and method for construction of the same. In one embodiment, a first dielectric material is associated with a first current return layer and a second dielectric material is associated with a second current return layer. A signal path layer is interposed between the first dielectric material and the second dielectric material. An adhesive layer is interposed between the first dielectric material and the second dielectric material such that the adhesive layer is substantially coplanar relative to the signal path layer.
摘要翻译： 印刷电路板（PCB）基板及其构造方法。 在一个实施例中，第一电介质材料与第一电流返回层相关联，并且第二电介质材料与第二电流返回层相关联。 信号通路层介于第一电介质材料和第二电介质材料之间。 粘合剂层介于第一电介质材料和第二电介质材料之间，使得粘合剂层相对于信号路径层基本上是共面的。
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