Compensation for voltage drifts in analog memory cells
    81.
    发明授权
    Compensation for voltage drifts in analog memory cells 有权
    补偿模拟存储单元中的电压漂移

    公开(公告)号:US08000141B1

    公开(公告)日:2011-08-16

    申请号:US12251471

    申请日:2008-10-15

    IPC分类号: G11C11/34

    摘要: A method for data storage includes storing data in a group of analog memory cells by writing respective first storage values into the memory cells. After storing the data, respective second storage values are read from the memory cells. A subset of the memory cells, in which the respective second storage values have drifted below a minimum readable value, is identified. The memory cells in the subset are operated on, so as to cause the second storage values of at least one of the memory cells in the subset to exceed the minimum readable value. At least the modified second storage values are re-read so as to reconstruct the stored data.

    摘要翻译: 一种用于数据存储的方法包括通过将相应的第一存储值写入存储单元来将数据存储在一组模拟存储单元中。 在存储数据之后,从存储器单元读取相应的第二存储值。 识别存储单元的子集,其中相应的第二存储值已经漂移到低于最小可读值。 操作子集中的存储器单元,以便使子集中的至少一个存储器单元的第二存储值超过最小可读值。 至少修改的第二存储值被重新读取,以便重建存储的数据。

    Far-end crosstalk (FEXT) canceller
    82.
    发明授权
    Far-end crosstalk (FEXT) canceller 有权
    远端串扰(FEXT)消除器

    公开(公告)号:US07826568B2

    公开(公告)日:2010-11-02

    申请号:US11617845

    申请日:2006-12-29

    IPC分类号: H03D1/04 H04J1/12

    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)的检测,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。

    Selective Activation of Programming Schemes in Analog Memory Cell Arrays
    83.
    发明申请
    Selective Activation of Programming Schemes in Analog Memory Cell Arrays 有权
    模拟存储器单元阵列中编程方案的选择性激活

    公开(公告)号:US20100220509A1

    公开(公告)日:2010-09-02

    申请号:US12714501

    申请日:2010-02-28

    IPC分类号: G11C27/00 G11C7/00

    摘要: A method for data storage includes defining a first programming scheme that programs a group of analog memory cells while reducing interference caused by at least one memory cell that neighbors the group, and a second programming scheme that programs the group of the analog memory cells and does not reduce all of the interference reduced by the first programming scheme. One of the first and second programming schemes is selected based on a criterion defined with respect to the analog memory cells. Data is stored in the group of the analog memory cells using the selected programming scheme.

    摘要翻译: 一种用于数据存储的方法包括:定义第一编程方案,其编程一组模拟存储器单元,同时减少由与该组相邻的至少一个存储器单元引起的干扰;以及第二编程方案,其对该组模拟存储器单元进行编程 不能减少第一编程方案减少的所有干扰。 基于针对模拟存储器单元定义的标准来选择第一和第二编程方案之一。 使用所选择的编程方案将数据存储在模拟存储器单元的组中。

    Baseline wander correction for communication receivers
    84.
    发明授权
    Baseline wander correction for communication receivers 有权
    通信接收机的基线漂移校正

    公开(公告)号:US07738567B2

    公开(公告)日:2010-06-15

    申请号:US11617644

    申请日:2006-12-28

    IPC分类号: H04B3/04 H04B3/20

    CPC分类号: H04L25/063 H04L25/0266

    摘要: A novel and useful baseline wander correction mechanism for use with transformer coupled baseband communication receivers. Parametric estimation of the transformer model is used estimate and cancel the baseline wander effect. A parametric model is used to model the baseline wander impairment created by the transmitter and receiver transformers as a high pass filter having an exponential decay parameter alpha. A correction signal for both the far end and echo signal paths are calculated and summed to generate a total correction signal. The total correction signal is partitioned into an analog correction signal that is applied to the analog portion of the communications receiver and into a digital correction signal that is similarly applied to the analog portion of the communications receiver.

    摘要翻译: 一种用于变压器耦合基带通信接收机的新颖有用的基线漂移校正机制。 使用变压器模型的参数估计估计并消除基线漂移效应。 参数模型用于将由发射机和接收机变压器产生的基线漂移损伤建模为具有指数衰减参数α的高通滤波器。 对远端和回波信号路径的校正信号进行计算并求和以产生总校正信号。 总校正信号被分割成模拟校正信号,该信号被施加到通信接收机的模拟部分并且被类似地应用于通信接收机的模拟部分的数字校正信号。

    STORAGE AT M BITS/CELL DENSITY IN N BITS/CELL ANALOG MEMORY CELL DEVICES, M>N
    85.
    发明申请
    STORAGE AT M BITS/CELL DENSITY IN N BITS/CELL ANALOG MEMORY CELL DEVICES, M>N 有权
    存储在N位/细胞模拟记忆体细胞中的位置/细胞密度M> N

    公开(公告)号:US20100124088A1

    公开(公告)日:2010-05-20

    申请号:US12618732

    申请日:2009-11-15

    IPC分类号: G11C27/00

    摘要: A method for data storage includes accepting data for storage in a memory that includes multiple analog memory cells and supports a set of built-in programming commands. Each of the programming commands programs a respective page, selected from a group of N pages, in a subset of the memory cells. The subset of the memory cells is programmed to store M pages of the data, M>N, by performing a sequence of the programming commands drawn only from the set.

    摘要翻译: 一种用于数据存储的方法包括接收用于存储在包括多个模拟存储器单元的存储器中的数据,并且支持一组内置的编程命令。 每个编程命令在存储器单元的子集中编写从一组N页中选择的相应页面。 存储器单元的子集被编程为通过执行仅从集合中绘制的编程命令的序列来存储数据的M页M> N。

    Reducing programming error in memory devices
    86.
    发明授权
    Reducing programming error in memory devices 有权
    减少存储设备中的编程错误

    公开(公告)号:US07697326B2

    公开(公告)日:2010-04-13

    申请号:US11995806

    申请日:2007-05-10

    IPC分类号: G11C16/04

    摘要: A method for storing data in an array (28) of analog memory cells (32) includes defining a constellation of voltage levels (90A, 90B, 90C, 90D) to be used in storing the data. A part of the data is written to a first analog memory cell in the array by applying to the analog memory cell a first voltage level selected from the constellation. After writing the part of the data to the first analog memory cell, a second voltage level that does not belong to the constellation is read from the first analog memory cell. A modification to be made in writing to one or more of the analog memory cells in the array is determined responsively to the second voltage level, and data are written to the one or more of the analog memory cells subject to the modification.

    摘要翻译: 一种用于将数据存储在模拟存储器单元(32)的阵列(28)中的方法包括定义用于存储数据的电压电平(90A,90B,90C,90D)的星座图。 通过向模拟存储器单元施加从星座中选择的第一电压电平,将一部分数据写入阵列中的第一模拟存储器单元。 在将部分数据写入第一模拟存储单元之后,从第一模拟存储单元读取不属于星座的第二电压电平。 响应于第二电压电平确定对阵列中的一个或多个模拟存储器单元进行写入的修改,并且数据被写入经过修改的一个或多个模拟存储器单元。

    PARAMETER ESTIMATION BASED ON ERROR CORRECTION CODE PARITY CHECK EQUATIONS
    87.
    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
    88.
    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
    89.
    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
    90.
    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。