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1. 发明申请

US20050285667A1 Sign-sign least means square filter 有权
标题翻译：符号最小的意思是方形滤波器
公开(公告)号：US20050285667A1
公开(公告)日：2005-12-29
申请号：US10879417
申请日：2004-06-28
申请人： James Jaussi , Bryan Casper , Ganesh Balamuragan , Stephen Mooney
发明人： James Jaussi , Bryan Casper , Ganesh Balamuragan , Stephen Mooney
IPC分类号： H03B1/00 , H03H21/00
CPC分类号： H03H21/0043 , H03H21/0001 , H03H2021/0065
摘要： In some embodiments, an adaptive filter employs two adaptation modes, where during one adaptation mode the adaptive filter is updated only when the received training sample is a first binary value and during the other adaptation mode the adaptive filter is updated only when the received sample is a second binary value. Each adaptation mode provides a set of filter weights, and these two sets of filter weights are averaged to provide an adapted set of filter weights. The use of two adaptation mode allows for a clock boundary in which the digital portion of the filter operates at a lower clock rate than the analog portion. In other embodiments, a filter architecture is described for providing the algebraic signs of the received data samples, important for sign-sign least means square filtering algorithms. In other embodiments, a filter architecture is described in which efficient use is made of voltage-to-current converters so as to achieve a high throughput rate during filtering. Embodiments of the present invention have application to channel equalization.
摘要翻译：在一些实施例中，自适应滤波器采用两种适应模式，其中在一个自适应模式期间，只有当所接收的训练样本是第一二进制值时才自动滤波器被更新，并且在另一自适应模式期间，仅当所接收的样本是第二个二进制值。每个适配模式提供一组滤波器权重，并且将这两组滤波器权重进行平均以提供一组适用的滤波器权重。使用两个适配模式允许滤波器的数字部分以比模拟部分更低的时钟速率工作的时钟边界。在其他实施例中，描述了用于提供接收数据样本的代数符号的滤波器架构，对于符号最小均方滤波算法而言是重要的。在其他实施例中，描述了一种滤波器架构，其中有效地使用电压 - 电流转换器，以便在滤波期间实现高吞吐率。本发明的实施例具有对信道均衡的应用。

2. 发明申请

US20050047538A1 Method and apparatus for clock deskew 有权
标题翻译：时钟偏移的方法和装置
公开(公告)号：US20050047538A1
公开(公告)日：2005-03-03
申请号：US10652908
申请日：2003-08-29
申请人： James Jaussi , Bryan Casper , Ganesh Balamuragan , Stephen Mooney
发明人： James Jaussi , Bryan Casper , Ganesh Balamuragan , Stephen Mooney
IPC分类号： H03L7/081 , H03L7/091 , H04L7/00 , H04L7/033 , H04L7/04 , H04L7/10
CPC分类号： H03L7/0814 , H03L7/091 , H04L7/0008 , H04L7/0025 , H04L7/033 , H04L7/043 , H04L7/10
摘要： A clock signal is deskewed relative to a data signal by sweeping a sampling point in time and sweeping an amplitude offset.
摘要翻译：通过在时间上扫描采样点并扫描幅度偏移，时钟信号相对于数据信号进行偏斜校正。

3. 发明授权

US07362837B2 Method and apparatus for clock deskew 有权
标题翻译：时钟偏移的方法和装置
公开(公告)号：US07362837B2
公开(公告)日：2008-04-22
申请号：US10652908
申请日：2003-08-29
申请人： James E. Jaussi , Bryan K. Casper , Ganesh Balamuragan , Stephen R. Mooney
发明人： James E. Jaussi , Bryan K. Casper , Ganesh Balamuragan , Stephen R. Mooney
IPC分类号： H04L7/02
CPC分类号： H03L7/0814 , H03L7/091 , H04L7/0008 , H04L7/0025 , H04L7/033 , H04L7/043 , H04L7/10
摘要： A clock signal is deskewed relative to a data signal by sweeping a sampling point in time and sweeping an amplitude offset. Bit error measurements are made at each sampling point in time and compared. Bit error measurements may be made by comparing received data to predetermined data values. The predetermined data values may be sourced from a linear feedback shift register.
摘要翻译：通过在时间上扫描采样点并扫描幅度偏移，时钟信号相对于数据信号进行偏斜校正。在每个采样点进行位误差测量并进行比较。可以通过将接收到的数据与预定数据值进行比较来进行比特误差测量。预定的数据值可以来自线性反馈移位寄存器。

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