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1. 发明授权

US08473535B2 High-speed pulse shaping filter systems and methods 有权
标题翻译：高速脉冲整形滤波系统及方法
公开(公告)号：US08473535B2
公开(公告)日：2013-06-25
申请号：US12327279
申请日：2008-12-03
申请人： Bevin George Perumana , Arun Rachamadugu , Stephane Pinel , Joy Laskar
发明人： Bevin George Perumana , Arun Rachamadugu , Stephane Pinel , Joy Laskar
IPC分类号： G06F17/10
CPC分类号： H03H15/00 , H03H2015/002
摘要： A first system and method relates to an analog current-mode method using branch systems. In the analog current-mode implementation, multiple branches systems can be scaled according to filter coefficients and switched using known data points. Positive coefficients can add current to the summing node, while negative coefficients can remove current from the summing node. Switches can be implemented with quick charge/discharge paths in order to operate at very high data rates. A second system and method relates to a digital look-up table based high-speed implementation. In the digital implementation, outputs can be pre-calculated as an n-bit output word that drives an n-bit DAC. Each bit of the n-bit word can then described as an independent function of the known data points. Each such function can be implemented as a high-speed combinational logic block. Both systems and methods enable the implementation of pulse shaping filters for multi-gigabit per second data transmission.
摘要翻译：第一系统和方法涉及使用分支系统的模拟电流模式方法。在模拟电流模式实现中，可以根据滤波器系数对多个分支系统进行缩放，并使用已知的数据点进行切换。正系数可以向求和节点添加电流，而负系数可以去除求和节点的电流。开关可以通过快速充电/放电路径实现，以便以非常高的数据速率运行。第二系统和方法涉及基于数字查找表的高速实现。在数字实现中，可以将输出预先计算为驱动n位DAC的n位输出字。 n位字的每个位可以被描述为已知数据点的独立函数。每个这样的功能可以被实现为高速组合逻辑块。这两种系统和方法使得能够实现用于千兆位/秒数据传输的脉冲整形滤波器。

2. 发明申请

US20090140784A1 HIGH-SPEED PULSE SHAPING FILTER SYSTEMS AND METHODS 有权
标题翻译：高速脉冲形状滤波器系统和方法
公开(公告)号：US20090140784A1
公开(公告)日：2009-06-04
申请号：US12327279
申请日：2008-12-03
申请人： Bevin George PERUMANA , Arun Rachamadugu , Stephane Pinel , Joy Laskar
发明人： Bevin George PERUMANA , Arun Rachamadugu , Stephane Pinel , Joy Laskar
IPC分类号： H03L7/00 , H03K5/01
CPC分类号： H03H15/00 , H03H2015/002
摘要： A first system and method relates to an analog current-mode method using branch systems. In the analog current-mode implementation, multiple branches systems can be scaled according to filter coefficients and switched using known data points. Positive coefficients can add current to the summing node, while negative coefficients can remove current from the summing node. Switches can be implemented with quick charge/discharge paths in order to operate at very high data rates. A second system and method relates to a digital look-up table based high-speed implementation. In the digital implementation, outputs can be pre-calculated as an n-bit output word that drives an n-bit DAC. Each bit of the n-bit word can then described as an independent function of the known data points. Each such function can be implemented as a high-speed combinational logic block. Both systems and methods enable the implementation of pulse shaping filters for multi-gigabit per second data transmission.
摘要翻译：第一系统和方法涉及使用分支系统的模拟电流模式方法。在模拟电流模式实现中，可以根据滤波器系数对多个分支系统进行缩放，并使用已知的数据点进行切换。正系数可以向求和节点添加电流，而负系数可以从求和节点去除电流。开关可以通过快速充电/放电路径实现，以便以非常高的数据速率运行。第二系统和方法涉及基于数字查找表的高速实现。在数字实现中，可以将输出预先计算为驱动n位DAC的n位输出字。 n位字的每个位可以被描述为已知数据点的独立函数。每个这样的功能可以被实现为高速组合逻辑块。这两种系统和方法使得能够实现用于千兆位/秒数据传输的脉冲整形滤波器。

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