公开(公告)号：US07408493B2

公开(公告)日：2008-08-05

申请号：US11134194

申请日：2005-05-20

申请人： Itay Lusky ,  Ofir Shalvi ,  Liran Brecher

发明人： Itay Lusky ,  Ofir Shalvi ,  Liran Brecher

IPC分类号： H03M1/12

CPC分类号： H03M1/185

摘要： Systems and methods for automatic gain control are disclosed. In one aspect of the invention, a system is provided that comprises a programmable gain amplifier that amplifies an input signal based on a gain signal. The system further comprises an analog-to-digital converter that generates at least one digital output signal from the amplified input signal, and an automatic gain control component that determines an adjustment of the gain signal based on a comparison of the at least one digital output signal to a predetermined maximum amplitude reference level.

摘要翻译： 公开了用于自动增益控制的系统和方法。 在本发明的一个方面，提供了一种系统，其包括可编程增益放大器，其基于增益信号放大输入信号。 该系统还包括一个模拟 - 数字转换器，其从放大的输入信号产生至少一个数字输出信号，以及一个自动增益控制部件，其基于至少一个数字输出的比较来确定增益信号的调整 信号到预定的最大幅度参考电平。

公开(公告)号：US07274735B2

公开(公告)日：2007-09-25

申请号：US10273558

申请日：2002-10-18

申请人： Itay Lusky ,  Daniel Wajcer ,  Yosef Bendel ,  Yigal Bitran ,  Naftali Sommer ,  Ofir Shalvi ,  Zvi Reznic ,  Ariel Yagil ,  Eli Haim

发明人： Itay Lusky ,  Daniel Wajcer ,  Yosef Bendel ,  Yigal Bitran ,  Naftali Sommer ,  Ofir Shalvi ,  Zvi Reznic ,  Ariel Yagil ,  Eli Haim

IPC分类号： H04B3/46

CPC分类号： H04L1/20 ,  H04L1/0001 ,  H04L1/0003 ,  H04L1/0017 ,  H04L1/0019

摘要： A method is provided to provide data to automatically estimate channel performance in a communication system if a different order constellation is used comprising the steps of: receiving an input signal from the channel; passing the input signal to a slicer having an output signal; determining signal noise by taking the difference between the input signal and output signal; identifying a beginning of a noise event when the signal noise is greater than a predefined first threshold; identifying an end of a noise event when the signal noise is less than a predefined second threshold; and providing for output the beginning of the noise event and the end of the noise event. Other systems and methods are disclosed.

摘要翻译： 提供一种提供数据以自动估计通信系统中的信道性能的方法，如果使用不同的订单星座包括以下步骤：从信道接收输入信号; 将输入信号传递到具有输出信号的限幅器; 通过取输入信号和输出信号之差来确定信号噪声; 当信号噪声大于预定义的第一阈值时，识别噪声事件的开始; 当信号噪声小于预定义的第二阈值时，识别噪声事件的结束; 并提供输出噪声事件的开始和噪声事件的结束。 公开了其它系统和方法。

公开(公告)号：US07274679B2

公开(公告)日：2007-09-25

申请号：US09761545

申请日：2001-01-16

申请人： Mati Amit ,  Ofir Shalvi ,  Ariel Yagil

发明人： Mati Amit ,  Ofir Shalvi ,  Ariel Yagil

IPC分类号： H04J1/00

CPC分类号： H04L12/2801

摘要： The present invention comprises aggregating a plurality of physical channels to a single logical channel, a scalable virtual channel (SVC). This may be implemented in a point to multipoint communications system. The present invention enables a variety of receivers, some receivers being able to receive only one physical channel, and other receivers being able to receive a plurality of physical channels as a SVC, with at least one same channel being used for both types of receivers.

摘要翻译： 本发明包括将多个物理信道聚合到单个逻辑信道，可伸缩虚拟信道（SVC）。 这可以在点对多点通信系统中实现。 本发明能够使各种接收机，一些接收机能够只接收一个物理信道，以及能够接收多个物理信道作为SVC的其他接收机，其中至少一个相同的信道用于两种类型的接收机。

公开(公告)号：US06775335B2

公开(公告)日：2004-08-10

申请号：US10406029

申请日：2003-04-02

申请人： Naftali Sommer ,  Ofir Shalvi

发明人： Naftali Sommer ,  Ofir Shalvi

IPC分类号： H04L2706

CPC分类号： H04N5/211 ,  H04L1/0047 ,  H04L1/0054 ,  H04L1/0057 ,  H04L1/006 ,  H04L1/0065 ,  H04L25/03057 ,  H04L2025/03382 ,  H04L2025/0342 ,  H04L2025/0349 ,  H04L2027/0055 ,  H04L2027/0075 ,  H04N5/4401 ,  H04N21/42607

摘要： A symbol detector provides a delay-less estimate of a transmitted symbol. The symbol detector includes a symbol input for receiving a sequence of input symbols, a plurality of accumulators (ACC) for storing trellis state costs, a plurality of adders (202) for summing the square of distances between an input symbol and a constellation symbol for a trellis branch with the trellis state costs, and a plurality of comparators (203) connected to the adders for determining minimum costs and providing those costs to the accumulators. A memory (201) is connected to an associated comparator for storing the minimum cost determined the associated comparator. A minimization unit (204) outputs an index value of comparators with the lowest value, and a branch table unit (205) outputs a delay-less estimate of a transmitted symbol based on the index of the trellis branch with lowest cost that enters the trellis state with lowest cost and an input symbol.

摘要翻译： 符号检测器提供对发射符号的无延迟估计。 符号检测器包括用于接收输入符号序列的符号输入，用于存储网格状态成本的多个累加器（ACC）;多个加法器（202），用于将输入符号和星座符号之间的距离的平方相加， 具有网格状态成本的网格分支，以及连接到加法器的多个比较器（203），用于确定最小成本并将这些成本提供给累加器。 存储器（201）连接到相关联的比较器，用于存储确定相关比较器的最小成本。 最小化单元（204）输出具有最低值的比较器的索引值，并且分支表单元（205）基于进入网格的最低成本的网格分支的索引输出所发送的符号的无延迟估计 最低成本的状态和输入符号。

公开(公告)号：US06751269B1

公开(公告)日：2004-06-15

申请号：US09480418

申请日：2000-01-11

申请人： Ofir Shalvi ,  Itay Lusky ,  Zvi Reznic ,  Daniel Wajcer ,  Ariel Yagil

发明人： Ofir Shalvi ,  Itay Lusky ,  Zvi Reznic ,  Daniel Wajcer ,  Ariel Yagil

IPC分类号： H04L2736

CPC分类号： H04L1/0059 ,  H04L1/0041 ,  H04L1/0069 ,  H04L1/0071 ,  H04L27/36

摘要： A bit-interleaved encoder for a CATV upstream channel is provided having a convolutional encoder for receiving data values, a bit-interleaver interconnected with said encoder, and a symbol mapper interconnected with said bit-interleaver.

摘要翻译： 提供了一种用于CATV上行信道的位交织编码器，其具有用于接收数据值的卷积编码器，与所述编码器互连的位交织器和与所述位交织器互连的符号映射器。

公开(公告)号：US06553074B1

公开(公告)日：2003-04-22

申请号：US09271818

申请日：1999-03-18

申请人： Ofir Shalvi ,  Zvi Reznic ,  Etai Zaltsman

发明人： Ofir Shalvi ,  Zvi Reznic ,  Etai Zaltsman

IPC分类号： H04B1404

CPC分类号： H04L25/4927

摘要： A method and device for combating logarithmic quantization and Robbed Bit Signaling (RBS) impairments that..are typical to PCM telephone lines is descried. An apparatus is described which includes a front-end unit which receives samples of the digital PCM line, an impairment identifier unit which identifies samples that have a high likelihood to have, large impairments due to the PCM line, an impairment estimator unit which estimates the value of impairment caused by the digital line, a samples reconstructor unit which fixes received samples by subtracting from them the value of the estimated impairment and an output unit transfers the reconstructed samples to a receiver. The method allows improving signal quality at the output of the PCM line, and thus improving data rates and robustness of digital communication receivers, and particularly of V.34 receivers, or V.90 transceivers that are digitally linked to the PCM, line.

摘要翻译： 描述了一种用于对抗PCM电话线路的典型对数量化和Robbed Bit Signaling（RBS）损伤的方法和装置。 描述了一种装置，其包括接收数字PCM线路的采样的前端单元，识别具有高似然性的样本的损害标识符单元，所述损伤识别单元具有由于PCM线路造成的大的损伤，所述损伤估计器单元估计 由数字线引起的损害的值，样本重建单元，其通过从其中减去估计的损害的值来固定接收的样本，并且输出单元将重建的样本传送到接收器。 该方法允许改善PCM线输出端的信号质量，从而提高数字通信接收机，特别是数字连接到PCM线路的V.34接收机或V.90收发器的数据速率和鲁棒性。

公开(公告)号：US08681549B2

公开(公告)日：2014-03-25

申请号：US13566372

申请日：2012-08-03

申请人： Ofir Shalvi ,  Naftali Sommer ,  Dotan Sokolov ,  Yoav Kasoria

发明人： Ofir Shalvi ,  Naftali Sommer ,  Dotan Sokolov ,  Yoav Kasoria

IPC分类号： G11C16/06 ,  G11C16/34 ,  G11C16/10 ,  G11C16/12

CPC分类号： G11C11/5628 ,  G06F11/1008 ,  G06F11/1068 ,  G11C11/56 ,  G11C16/34 ,  G11C16/3459 ,  G11C29/00 ,  G11C29/52 ,  H03M13/2906

摘要： A method for data storage includes storing first data bits in a set of multi-bit analog memory cells at a first time by programming the memory cells to assume respective first programming levels. Second data bits are stored in the set of memory cells at a second time that is later than the first time by programming the memory cells to assume respective second programming levels that depend on the first programming levels and on the second data bits. A storage strategy is selected responsively to a difference between the first and second times. The storage strategy is applied to at least one group of the data bits, selected from among the first data bits and the second data bits.

摘要翻译： 一种用于数据存储的方法包括：通过对存储器单元进行编程来采用各自的第一编程级别，来将第一数据位在第一时间存储在一组多位模拟存储单元中。 第二数据位通过对存储器单元进行编程以采取依赖于第一编程电平和第二数据位的相应的第二编程电平而在比第一时间晚的第二时间存储在存储单元组中。 响应于第一次和第二次之间的差异选择存储策略。 将存储策略应用于从第一数据位和第二数据位中选择的至少一组数据位。

公开(公告)号：US08595573B2

公开(公告)日：2013-11-26

申请号：US13405309

申请日：2012-02-26

申请人： Ofir Shalvi ,  Naftali Sommer ,  Oren Golov

发明人： Ofir Shalvi ,  Naftali Sommer ,  Oren Golov

IPC分类号： G11C21/00

CPC分类号： G06F11/181 ,  G06F11/1008 ,  G06F11/1044 ,  G06F11/1076 ,  H03M13/1102 ,  H03M13/1515 ,  H03M13/152 ,  H03M13/23 ,  H03M13/25 ,  H03M13/296

摘要： A method for data storage in a memory including multiple memory cells arranged in blocks, includes storing first and second pages in respective first and second groups of the memory cells within a given block of the memory. A pattern of respective positions of one or more defective memory cells is identified in the first group. The second page is recovered by applying the pattern identified in the first group to the second group of the memory cells.

摘要翻译： 一种用于在包括以块为单位布置的多个存储单元的存储器中的数据存储的方法，包括将第一和第二页存储在存储器的给定块内的存储单元的相应第一和第二组中。 在第一组中识别出一个或多个有缺陷的存储器单元的相应位置的图案。 通过将第一组中识别的模式应用到第二组存储器单元来恢复第二页。

公开(公告)号：US08547742B2

公开(公告)日：2013-10-01

申请号：US13449326

申请日：2012-04-18

申请人： Ofir Shalvi ,  Naftali Sommer ,  Uri Perlmutter ,  Dotan Sokolov

发明人： Ofir Shalvi ,  Naftali Sommer ,  Uri Perlmutter ,  Dotan Sokolov

IPC分类号： G11C16/04

CPC分类号： G06F11/1068 ,  G11C11/5628 ,  G11C11/5642 ,  G11C16/26 ,  G11C27/005 ,  G11C2211/5641

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.

公开(公告)号：US08473780B2

公开(公告)日：2013-06-25

申请号：US13539734

申请日：2012-07-02

申请人： Ofir Shalvi

发明人： Ofir Shalvi

IPC分类号： G06F11/00

CPC分类号： G06F11/1092 ,  G06F2211/109

摘要： A method for data storage includes encoding data with an inter-device Error Correction Code (ECC), and sending the encoded data for storage on two or more storage devices. The data to be stored on each of the storage devices, and which has been encoded with the inter-device ECC, is encoded with an intra-device ECC, and the data encoded with the inter-device and intra-device ECCs is stored on the storage device. After storing the data, at least part of the stored data is retrieved and output by decoding the intra-device and inter-device ECCs, while using information related to one of the intra-device and inter-device ECCs in decoding the other of the intra-device and inter-device ECCs.

摘要翻译： 一种用于数据存储的方法包括使用设备间错误校正码（ECC）对数据进行编码，并发送编码数据以存储在两个或多个存储设备上。 要存储在每个存储设备上并且已经用设备间ECC编码的数据用设备内ECC编码，并且用设备间和设备内ECC编码的数据被存储在 存储设备。 在存储数据之后，通过对设备内和设备间ECC进行解码来检索和输出至少部分存储的数据，同时使用与设备内和设备间ECC之一相关的信息来解码另一个 设备内和设备间ECC。