PARAMETER ESTIMATION BASED ON ERROR CORRECTION CODE PARITY CHECK EQUATIONS
    91.
    发明申请
    PARAMETER ESTIMATION BASED ON ERROR CORRECTION CODE PARITY CHECK EQUATIONS 有权
    基于错误修正代码的参数估计奇偶校验方程

    公开(公告)号:US20090199074A1

    公开(公告)日:2009-08-06

    申请号:US12364531

    申请日:2009-02-03

    申请人: Naftali Sommer

    发明人: Naftali Sommer

    IPC分类号: H03M13/05 G06F11/10

    摘要: A method for operating a memory, which includes analog memory cells, includes encoding data with an Error Correction Code (ECC) that is representable by a plurality of equations. The encoded data is stored in a group of the analog memory cells by writing respective input storage values to the memory cells in the group. Multiple sets of output storage values are read from the memory cells in the group using one or more different, respective read parameters for each set. Numbers of the equations, which are satisfied by the respective sets of the output storage values, are determined. A preferred setting of the read parameters is identified responsively to the respective numbers of the satisfied equations. The memory is operated on using the preferred setting of the read parameters.

    摘要翻译: 一种用于操作包括模拟存储器单元的存储器的方法,包括用可由多个等式表示的纠错码(ECC)编码数据。 通过将相应的输入存储值写入组中的存储器单元,将编码数据存储在一组模拟存储器单元中。 从组中的存储器单元读取多组输出存储值,使用每组的一个或多个不同的相应读取参数。 确定由各组输出存储值所满足的等式的数量。 读取参数的优选设置是响应于所满足的等式的相应数量来确定的。 使用读取参数的首选设置来操作存储器。

    Noise analysis in a communication system
    92.
    发明授权
    Noise analysis in a communication system 有权
    通信系统中的噪声分析

    公开(公告)号:US07492703B2

    公开(公告)日:2009-02-17

    申请号:US10273561

    申请日:2002-10-18

    IPC分类号: H04J11/00

    摘要: A system is provided to automatically estimate performance of a receiver for receiving input signals, the input signals having a carrier frequency and a baud rate, from a channel in a communication system and the effect of highly correlated noise cancellation on performance of the receiver, while no active transmission is occurring on the channel, comprising: a digital front end in the receiver for receiving samples of the input signals; a predictor coupled to the digital front end for predicting highly correlated noise in a second sample of the input signal; and a subtraction unit coupled to the predictor for subtracting the predictor output from the second sample to determine residual noise in the second sample. Other systems and methods are disclosed.

    摘要翻译: 提供一种系统,用于自动估计用于从通信系统中的信道接收输入信号,输入信号具有载波频率和波特率的接收机的性能以及高度相关的噪声消除对接收机性能的影响,同时 在频道上没有发生主动传输,包括:接收机中的数字前端,用于接收输入信号的采样; 耦合到所述数字前端的预测器,用于预测所述输入信号的第二样本中的高度相关噪声; 以及减法单元,耦合到所述预测器,用于从所述第二样本减去所述预测器输出,以确定所述第二样本中的残余噪声。 公开了其它系统和方法。

    FAR-END CROSSTALK (FEXT) CANCELLER
    93.
    发明申请
    FAR-END CROSSTALK (FEXT) CANCELLER 有权
    FAR-END CROSSTALK(FEXT)CANCELLER

    公开(公告)号:US20080160915A1

    公开(公告)日:2008-07-03

    申请号:US11617845

    申请日:2006-12-29

    IPC分类号: H04B15/00 H04B1/00

    摘要: A novel and useful mechanism for the detection, estimation and correction of far-end cross talk (FEXT) caused by transmissions over adjacent wire pairs or cables. The detection, estimation and correction technique of the invention can be used to identify and compensate for FEXT impairments in Ethernet and DSL systems. The detection, estimation and correction is performed utilizing one of several techniques including linear forward filtering, backward decision feedback based filtering and a combination thereof. Results of simulations are presented illustrating the performance improvements provided by the present invention

    摘要翻译: 一种用于通过相邻线对或电缆传输引起的远端串扰(FEXT)检测,估计和校正的新颖有用的机制。 本发明的检测,估计和校正技术可用于识别和补偿以太网和DSL系统中的FEXT损伤。 使用包括线性正向滤波,基于反向判决反馈的滤波及其组合的几种技术之一来执行检测,估计和校正。 进行模拟的结果示出了本发明提供的性能改进

    Timing recovery of PAM signals using baud rate interpolation
    94.
    发明申请
    Timing recovery of PAM signals using baud rate interpolation 有权
    使用波特率插值对PAM信号进行定时恢复

    公开(公告)号:US20050232383A1

    公开(公告)日:2005-10-20

    申请号:US10929216

    申请日:2004-08-30

    申请人: Naftali Sommer

    发明人: Naftali Sommer

    摘要: A timing recovery method enables interpolation of PAM signals sampled at baud rate. The method exploits the structure of the PAM signal and also the smoothness of the channel pulse response. The resulting interpolator is an adaptive linear filter; and its taps can be adapted with the LMS algorithm. Using this interpolator enables a user to significantly reduce the complexity of the analog clock control circuit. A Gigabit Ethernet receiver that controls the A/D clock by selecting one of several evenly space clock phases, for example, reduced the required number of clock phases from 64 to 16.

    摘要翻译: 定时恢复方法能够以波特率采样的PAM信号进行插值。 该方法利用PAM信号的结构以及通道脉冲响应的平滑度。 所得到的内插器是自适应线性滤波器; 并且其抽头可以用LMS算法进行调整。 使用该内插器使用户能够显着降低模拟时钟控制电路的复杂性。 通过选择几个均匀空间时钟相位之一来控制A / D时钟的千兆以太网接收器,例如将所需的时钟相位数从64减少到16。

    High stability fast tracking adaptive equalizer for use with time varying communication channels
    95.
    发明授权
    High stability fast tracking adaptive equalizer for use with time varying communication channels 有权
    高稳定性快速跟踪自适应均衡器,用于时变通信信道

    公开(公告)号:US06240133B1

    公开(公告)日:2001-05-29

    申请号:US09245117

    申请日:1999-02-04

    IPC分类号: H03H730

    摘要: An adaptive equalizer capable of tracking rapid channel variations while maintaining high stability and low jitter, and a receiver constructed therefrom. A novel feature of the invention is that is that the equalizer is sectioned, that is constructed from a plurality of feed-forward sections and decision-feedback sections, where these sections comprise a cascade of an adaptive linear filter and an adaptive multiplier. This structure is effective at combating rapid channel variations, which are a result of delay variations of the reflections of the signal, e.g., airplane flutter, without sacrificing the stability and the accuracy of the equalizer even in cases where the equalizer has a large number of taps. The different equalizer sections may have different step size parameters. A controller monitors the channel variations and adjusts the step size parameters of each section accordingly. The controller increases the step size of the equalizer sections that are able to compensate for the variation of the channel and does not increase the step sizes of the other sections. This allows the equalizer to combat rapid channel variations without sacrificing stability and accuracy. The present invention is particularly suitable to high speed wireless RF digital communications applications, e.g., to DTV broadcast applications, where the equalizer is characterized by a large number of taps and the signal is subject to rapid time varying reflections due to movement of objects such as cars and airplanes.

    摘要翻译: 一种能够跟踪快速通道变化同时保持高稳定性和低抖动的自适应均衡器,以及由其构成的接收器。 本发明的一个新颖特征在于,均衡器被分段,其由多个前馈部分和判定反馈部分构成,其中这些部分包括自适应线性滤波器和自适应乘法器的级联。 这种结构有效地对抗快速通道变化,这是由于信号的反射的延迟变化(例如,飞机颤动)而不牺牲均衡器的稳定性和精度的结果,即使在均衡器具有大量的 水龙头 不同的均衡器部分可以具有不同的步长参数。 控制器监视通道变化并相应调整每个部分的步长参数。 控制器增加了能够补偿通道变化的均衡器部分的步长,并且不增加其它部分的步长。 这允许均衡器在不牺牲稳定性和准确性的情况下对抗快速通道变化。 本发明特别适用于高速无线RF数字通信应用,例如,对于DTV广播应用,其中均衡器的特征在于大量的抽头,并且该信号由于诸如以下的对象的移动而经受快速的时变反射 汽车和飞机。

    Adaptive over-provisioning in memory systems
    98.
    发明授权
    Adaptive over-provisioning in memory systems 有权
    内存系统中的自适应过度配置

    公开(公告)号:US08479080B1

    公开(公告)日:2013-07-02

    申请号:US12822207

    申请日:2010-06-24

    IPC分类号: H03M13/00

    摘要: A method for data storage includes, in a memory that includes multiple memory blocks, specifying at a first time a first over-provisioning overhead, and storing data in the memory while retaining in the memory blocks memory areas, which do not hold valid data and whose aggregated size is at least commensurate with the specified first over-provisioning overhead. Portions of the data from one or more previously-programmed memory blocks containing one or more of the retained memory areas are compacted. At a second time subsequent to the first time, a second over-provisioning overhead, different from the first over-provisioning overhead, is specified, and data storage and data portion compaction is continued while complying with the second over-provisioning overhead.

    摘要翻译: 一种用于数据存储的方法包括在包括多个存储器块的存储器中,在第一时间指定第一过度供应开销,并且将数据存储在存储器中,同时保留存储器块,其不保存有效数据, 其聚合大小至少与指定的第一超额配置开销相称。 包含一个或多个保留的存储区域的一个或多个预先编程的存储块的数据的部分被压缩。 在第一次之后的第二时间,指定与第一过度供应开销不同的第二过度供应开销,并且在遵循第二过度供应开销的同时继续数据存储和数据部分压缩。

    Memory device with reduced sense time readout
    99.
    发明授权
    Memory device with reduced sense time readout 有权
    存储器件具有减少的感测时间读数

    公开(公告)号:US08400858B2

    公开(公告)日:2013-03-19

    申请号:US13214257

    申请日:2011-08-22

    IPC分类号: G11C7/02

    摘要: A method for data storage includes providing at least first and second readout configurations for reading storage values from analog memory cells, such that the first readout configuration reads the storage values with a first sense time and the second readout configuration reads the storage values with a second sense time, shorter than the first sense time. A condition is evaluated with respect to a read operation that is to be performed over a group of the memory cells. One of the first and second readout configurations is selected responsively to the evaluated condition. The storage values are read from the group of the memory cells using the selected readout configuration.

    摘要翻译: 一种用于数据存储的方法包括提供用于从模拟存储器单元读取存储值的至少第一和第二读出配置,使得第一读出配置以第一感测时间读取存储值,并且第二读出配置用第二读出配置读取存储值 感觉时间短于第一感觉时间。 针对要在一组存储器单元上执行的读取操作来评估条件。 响应于评估条件选择第一和第二读出配置之一。 使用选择的读出配置从存储器单元的组中读取存储值。

    MEMORY DEVICE READOUT USING MULTIPLE SENSE TIMES
    100.
    发明申请
    MEMORY DEVICE READOUT USING MULTIPLE SENSE TIMES 有权
    使用多个感应时间的存储器件读数

    公开(公告)号:US20120320672A1

    公开(公告)日:2012-12-20

    申请号:US13284909

    申请日:2011-10-30

    IPC分类号: G11C16/04

    摘要: A method for data storage includes storing data in a group of analog memory cells by writing respective storage values into the memory cells in the group. One or more of the memory cells in the group are read using a first readout operation that senses the memory cells with a first sense time. At least one of the memory cells in the group is read using a second readout operation that senses the memory cells with a second sense time, longer than the first sense time. The data stored in the group of memory cells is reconstructed based on readout results of the first and second readout operations.

    摘要翻译: 用于数据存储的方法包括通过将相应的存储值写入组中的存储器单元来将数据存储在一组模拟存储器单元中。 使用以第一感测时间感测存储器单元的第一读出操作读取组中的一个或多个存储器单元。 使用第二读出操作来读取组中的至少一个存储器单元,该第二读出操作以比第一感测时间长的第二感测时间感测存储器单元。 基于第一和第二读出操作的读出结果重建存储在存储单元组中的数据。