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1. 发明授权

US08542725B1 Decision feedback equalization for signals having unequally distributed patterns 有权
标题翻译：对具有不均匀分布模式的信号进行判决反馈均衡
公开(公告)号：US08542725B1
公开(公告)日：2013-09-24
申请号：US12269744
申请日：2008-11-12
申请人： Haoli Qian , Xing Wu
发明人： Haoli Qian , Xing Wu
IPC分类号： H04B17/00
CPC分类号： H04L25/03885 , H04L25/03057
摘要： Tools capable of improving the accuracy of decision feedback equalization (DFE) are described. The tools may adapt a DFE using a more-equal distribution of signals than those actually received. The tools may do so by disregarding, averaging, or weighting certain signals when adapting the DFE when those signals represent an unequal distribution of bit patterns. In one example, the tools detect and disregard some of the signals representing idle bit patterns that are received more often than other bit patterns. The tools may also or instead compensate for a bit pattern that is never or rarely received.
摘要翻译：描述了能够提高判决反馈均衡（DFE）精度的工具。这些工具可以使用比实际接收的信号更均匀的信号分配来适应DFE。当这些信号表示位模式的不均匀分布时，在适配DFE时，这些工具可以忽略，平均或加权某些信号。在一个示例中，工具检测和忽略表示比其他位模式更频繁地接收的空闲位模式的一些信号。这些工具还可以或者替代地补偿从未或很少接收的位模式。

2. 发明授权

US08327195B1 Non-intrusive eye monitor system 有权
标题翻译：非侵入式眼睛监护仪系统
公开(公告)号：US08327195B1
公开(公告)日：2012-12-04
申请号：US13300354
申请日：2011-11-18
申请人： Haoli Qian , William Lo , Runsheng He , Jeffrey Choun , Ping Zheng , Hui Wang , Yi-Chun Chen , Chee Hoe Chu
发明人： Haoli Qian , William Lo , Runsheng He , Jeffrey Choun , Ping Zheng , Hui Wang , Yi-Chun Chen , Chee Hoe Chu
IPC分类号： G06F11/00 , H03H7/30
CPC分类号： H04L25/03019 , H04L1/203 , H04L25/03057
摘要： A system including a summer, a comparator, a zero-crossing module, and a control module. The summer is configured to (i) receive a data input signal, and (ii) generate an equalized signal in response to the data input signal. The comparator is configured to generate a recovered data signal in response to the equalized signal. The zero-crossing module is configured to generate a zero-crossing signal in response to the equalized signal. The control module is configured to generate eye information in response to i) the recovered data signal and ii) the zero-crossing signal. The eye information includes characteristic data associated with the recovered data signal, and the characteristic data when plotted provides an eye diagram.
摘要翻译：包括加法器，比较器，过零模块和控制模块的系统。夏天被配置为（i）接收数据输入信号，以及（ii）响应于数据输入信号产生均衡的信号。比较器被配置为响应于均衡的信号产生恢复的数据信号。过零模块被配置为响应于均衡信号产生过零信号。控制模块被配置为响应于i）恢复的数据信号和ii）过零信号来生成眼睛信息。眼睛信息包括与恢复的数据信号相关联的特征数据，并且绘制时的特征数据提供眼图。

3. 发明授权

US08074126B1 Non-intrusive eye monitor system 有权
标题翻译：非侵入式眼睛监护仪系统
公开(公告)号：US08074126B1
公开(公告)日：2011-12-06
申请号：US11810762
申请日：2007-06-07
申请人： Haoli Qian , William Lo , Runsheng He , Jeffrey Choun , Ping Zheng , Hui Wang , Yi-Chun Chen , Chee Hoe Chu
发明人： Haoli Qian , William Lo , Runsheng He , Jeffrey Choun , Ping Zheng , Hui Wang , Yi-Chun Chen , Chee Hoe Chu
IPC分类号： G06F11/00 , H03H7/30
CPC分类号： H04L25/03019 , H04L1/203 , H04L25/03057
摘要： A signal receiver includes a data recovery module that generates an equalized data signal and a recovered data signal based on a data input signal. An error module generates an error information signal based on the equalized data signal and an error threshold signal. An eye measurement control module generates an eye characteristic signal based on the recovered data signal and the error information signal.
摘要翻译：信号接收机包括数据恢复模块，该数据恢复模块基于数据输入信号产生均衡的数据信号和恢复的数据信号。错误模块基于均衡的数据信号和错误阈值信号产生错误信息信号。眼睛测量控制模块基于恢复的数据信号和错误信息信号产生眼睛特征信号。

4. 发明授权

US08489970B1 Iterative PRBS seed recovery using soft decisions 有权
标题翻译：迭代PRBS种子恢复采用软判决
公开(公告)号：US08489970B1
公开(公告)日：2013-07-16
申请号：US13614397
申请日：2012-09-13
申请人： Jamal Riani , Haoli Qian
发明人： Jamal Riani , Haoli Qian
IPC分类号： H03M13/03 , H03M13/00 , G01R31/28 , H04L27/08 , H04L12/26 , H04B17/00
CPC分类号： H04L25/067
摘要： A receiver includes a seed recovery module and a pseudo-random binary sequence generator. The seed recovery module is configured to receive a pseudo-random binary sequence and a signal including a seed value, recover the seed value from the signal using the pseudo-random binary sequence, and determine a likelihood that a bit of the seed value was recovered accurately. The pseudo-random binary sequence generator is configured to generate the pseudo-random binary sequence, and adjust the pseudo-random binary sequence based on the likelihood until the likelihood is greater than a threshold.
摘要翻译：接收机包括种子恢复模块和伪随机二进制序列发生器。种子恢复模块被配置为接收伪随机二进制序列和包括种子值的信号，使用伪随机二进制序列从信号中恢复种子值，并确定种子值的位被恢复的可能性准确。伪随机二进制序列生成器被配置为生成伪随机二进制序列，并且基于似然性调整伪随机二进制序列，直到似然度大于阈值。

5. 发明授权

US07742556B1 Circuits, methods, apparatus, and systems for recovery of spread spectrum clock 有权
标题翻译：用于恢复扩频时钟的电路，方法，装置和系统
公开(公告)号：US07742556B1
公开(公告)日：2010-06-22
申请号：US11376601
申请日：2006-03-14
申请人： Haoli Qian , Runsheng He
发明人： Haoli Qian , Runsheng He
IPC分类号： H03D3/24
CPC分类号： H04L7/033 , H03L7/0807 , H03L7/0812 , H04L7/002
摘要： Circuits, methods, apparatus, and systems for recovering a clock from a spread spectrum signal having a periodic modulation profile. The circuits generally include an error detector circuit configured to compare the spread spectrum signal and a recovered clock signal, and to produce a first error signal corresponding to the periodic modulation profile and a second error signal corresponding to phase differences other than the spread spectrum modulation, a record and playback unit configured to record a value to a frequency memory, said value based on the first error signal and produce a third error signal corresponding to a predicted periodic modulation based at least in part on the recorded value, and a signal generator configured to produce the recovered clock signal in response to the second and third error signals.
摘要翻译：用于从具有周期性调制曲线的扩频信号中恢复时钟的电路，方法，装置和系统。电路通常包括错误检测器电路，其被配置为比较扩频信号和恢复的时钟信号，并且产生对应于周期性调制分布图的第一误差信号和对应于扩频调制以外的相位差的第二误差信号，记录和重放单元，被配置为基于所述第一误差信号将值记录到频率存储器，并且至少部分地基于所述记录值产生与预测的周期性调制相对应的第三误差信号，以及信号发生器被配置以响应于第二和第三误差信号产生恢复的时钟信号。

6. 发明授权

US07684778B1 Image cancellation in receivers 失效
标题翻译：接收器中的图像消除
公开(公告)号：US07684778B1
公开(公告)日：2010-03-23
申请号：US11225685
申请日：2005-09-12
申请人： Haoli Qian , Xiang Guang Feng , Runsheng He , Zhipei Chi
发明人： Haoli Qian , Xiang Guang Feng , Runsheng He , Zhipei Chi
IPC分类号： H04B1/10
CPC分类号： H04B1/28 , H04B1/0032
摘要： Systems and techniques relating to image cancellation in received communications signals are described. In one aspect, a received communications signal can include a desired signal and an image signal. A leakage tracing signal can be generated, and the image signal can be removed from the communications signal using the leakage tracing signal mixed with the communications signal. Implementations can include generating a first channel signal and a second channel signal, generating a first filter using the first channel signal and the leakage tracing signal, and generating a second filter using the second channel signal and the leakage tracing signal. Removing the image signal from the communications signal can include filtering the first channel signal using the second filter to obtain a first filtered signal, filtering the second channel signal using the first filter to obtain a second filtered signal, and subtracting the second filtered signal from the first filtered signal.
摘要翻译：描述与接收的通信信号中的图像消除有关的系统和技术。在一个方面，接收的通信信号可以包括期望的信号和图像信号。可以产生泄漏跟踪信号，并且可以使用与通信信号混合的泄漏跟踪信号从通信信号中去除图像信号。实现可以包括产生第一信道信号和第二信道信号，使用第一信道信号和泄漏跟踪信号产生第一滤波器，以及使用第二信道信号和泄漏跟踪信号产生第二滤波器。从通信信号中去除图像信号可以包括使用第二滤波器对第一信道信号进行滤波以获得第一滤波信号，使用第一滤波器对第二信道信号进行滤波以获得第二滤波信号，以及从第第一个滤波信号。

7. 发明授权

US07471225B1 Transmitter digital-to-analog converter with noise shaping 有权
标题翻译：具有噪声整形功能的发射器数模转换器
公开(公告)号：US07471225B1
公开(公告)日：2008-12-30
申请号：US11636283
申请日：2006-12-08
申请人： Runsheng He , Haoli Qian
发明人： Runsheng He , Haoli Qian
IPC分类号： H03M3/00
CPC分类号： H03M7/3031 , H03M7/3026 , H03M7/3042
摘要： A noise shaping module comprises a first addition module that receives an input signal. A modulo operation module generates a modulo signal based on an output of the addition module. A truncation module truncates the modulo output to form a truncated signal. A feedback filter module generates a feedback signal that is an input to the first addition module based on the truncated signal.
摘要翻译：噪声整形模块包括接收输入信号的第一加法模块。模运算模块基于加法模块的输出产生模信号。截断模块截断模数输出以形成截断的信号。反馈滤波器模块基于截断信号产生作为第一加法模块的输入的反馈信号。

8. 发明授权

US08276052B1 Iterative PRBS seed recovery using soft decisions 有权
标题翻译：迭代PRBS种子恢复采用软判决
公开(公告)号：US08276052B1
公开(公告)日：2012-09-25
申请号：US12690829
申请日：2010-01-20
申请人： Jamal Riani , Haoli Qian
发明人： Jamal Riani , Haoli Qian
IPC分类号： H03M13/03 , H03M13/00 , G01R31/28 , H04L27/08 , H04L12/26 , H04B17/00
CPC分类号： H04L25/067
摘要： A system and method for recovering the seed of a pseudo-random binary sequence (PRBS) using soft decisions is disclosed. In some implementations, a log-likelihood ratio is calculated to determine the certainty with which each bit in the seed has been recovered, and in some implementations, the value of the PRBS is used in the calculation of the log-likelihood ratio. In some implementations, a linear feedback shift register stores the log-likelihood ratio for each bit in the sequence.
摘要翻译：公开了一种使用软判决来恢复伪随机二进制序列（PRBS）种子的系统和方法。在一些实现中，计算对数似然比以确定种子中每个位已被恢复的确定性，并且在一些实现中，PRBS的值用于计算对数似然比。在一些实现中，线性反馈移位寄存器存储序列中每个比特的对数似然比。

9. 发明授权

US08023920B1 Image cancellation in receivers 有权
标题翻译：接收器中的图像消除
公开(公告)号：US08023920B1
公开(公告)日：2011-09-20
申请号：US12718909
申请日：2010-03-05
申请人： Haoli Qian , Xiang Guang Feng , Runsheng He , Zhipei Chi
发明人： Haoli Qian , Xiang Guang Feng , Runsheng He , Zhipei Chi
IPC分类号： H04B1/10
CPC分类号： H04B1/28 , H04B1/0032
摘要： Systems and techniques relating to image cancellation in received communications signals are described. A described technique includes receiving a communications signal including a desired signal and an image signal; generating a leakage tracing signal at a frequency band of the image signal, the leakage tracing signal including a noise signal, a frequency of the leakage tracing signal being within the frequency band of the image signal; and removing the image signal from a signal that is based on the communications signal and the leakage tracing signal to resolve the desired signal, where the removing is based on an addition of the leakage tracing signal to the communications signal. Removing the image signal can include using one or more weights to control one or more filters to resolve the desired signal. The one or more weights can be determined based on the noise signal.
摘要翻译：描述与接收的通信信号中的图像消除有关的系统和技术。所描述的技术包括接收包括期望信号和图像信号的通信信号; 在所述图像信号的频带处产生泄漏跟踪信号，所述泄漏跟踪信号包括噪声信号，所述泄漏跟踪信号的频率在所述图像信号的频带内; 以及从基于所述通信信号和所述泄漏跟踪信号的信号中去除所述图像信号以解决所述期望信号，其中所述去除是基于所述通信信号的所述泄漏跟踪信号的相加。去除图像信号可以包括使用一个或多个权重来控制一个或多个滤波器来解析期望的信号。可以基于噪声信号来确定一个或多个权重。

10. 发明授权

US07773017B1 Transmitter digital-to-analog converter with noise shaping 有权
标题翻译：具有噪声整形功能的发射器数模转换器
公开(公告)号：US07773017B1
公开(公告)日：2010-08-10
申请号：US12283841
申请日：2008-09-16
申请人： Runsheng He , Haoli Qian
发明人： Runsheng He , Haoli Qian
IPC分类号： H03M3/00
CPC分类号： H03M7/3031 , H03M7/3026 , H03M7/3042
摘要： A noise shaping module includes a first addition module that receives an N-bit digital input signal, where N is an integer greater than one. A first filter module generates a first filtered output signal based on an output signal of the first addition module. A truncation module generates an M-bit truncated output signal based on the first filtered output signal, where M is an integer less than N. A second filter module generates a second filtered output signal based on the M-bit truncated output signal. The second filtered output signal is an input to the first addition module.
摘要翻译：噪声整形模块包括第一加法模块，其接收N位数字输入信号，其中N是大于1的整数。第一滤波器模块基于第一加法模块的输出信号产生第一滤波输出信号。截断模块基于第一滤波输出信号产生M位截断的输出信号，其中M是小于N的整数。第二滤波器模块基于M位截断输出信号产生第二滤波输出信号。第二滤波输出信号是第一加法模块的输入。

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