公开(公告)号：US08321762B2

公开(公告)日：2012-11-27

申请号：US12129778

申请日：2008-05-30

申请人： Ajay Dholakia ,  Evangelos Eleftheriou ,  Xiao-Yu Hu ,  Ilias Iliadis

发明人： Ajay Dholakia ,  Evangelos Eleftheriou ,  Xiao-Yu Hu ,  Ilias Iliadis

IPC分类号： G11C29/00

CPC分类号： H03M13/1102 ,  H03M13/036 ,  H03M13/17 ,  H03M13/19

摘要： The present invention relates to a method for reducing data loss comprising a first computing step for computing an intermediate result for each redundancy information entity of a redundancy set by processing respectively associated data information entities of a given data set on at least two main diagonals of a parity check matrix representing an error correction coding scheme. The method further comprises a second computing step for computing the information content of the respective redundancy information entity dependent on the respective intermediate result.

摘要翻译： 本发明涉及一种用于减少数据丢失的方法，包括：第一计算步骤，用于通过处理在至少两个主对角线上的给定数据集的分别相关联的数据信息实体来计算冗余集的每个冗余信息实体的中间结果 表示纠错编码方案的奇偶校验矩阵。 该方法还包括第二计算步骤，用于根据各自的中间结果来计算相应的冗余信息实体的信息内容。

公开(公告)号：US20080102799A1

公开(公告)日：2008-05-01

申请号：US11930680

申请日：2007-10-31

申请人： Ajay Dholakia ,  John G. Rooney

发明人： Ajay Dholakia ,  John G. Rooney

IPC分类号： H04M3/436

CPC分类号： H04W4/14 ,  H04L51/12 ,  H04L51/38 ,  Y10T70/5752

摘要： A method and apparatus for identifying an unwanted short message service (SMS) message from SMS messages received by a cellular mobile communication system, which comprises at least a history database (HB) for storing a set (H) of the messages received by the cellular mobile communication system. The method includes the steps of: measuring a difference in an information content between a SMS message (m) received by the cellular mobile communication system and the set (H) of messages stored in the history database (HB), and marking the SMS message (m) as being an unwanted SMS message if the difference that is measured is less than or equal to a predefined threshold value.

摘要翻译： 一种用于从由蜂窝移动通信系统接收的SMS消息识别不想要的短消息服务（SMS）消息的方法和装置，其包括用于存储由蜂窝小区接收的消息的集合（H）的历史数据库（H） 移动通信系统。 该方法包括以下步骤：测量由蜂窝移动通信系统接收的SMS消息（m）和存储在历史数据库（HB）中的消息组（H）之间的信息内容的差异，并标记SMS消息 （m）作为不需要的SMS消息，如果所测量的差小于或等于预定义的阈值。

公开(公告)号：US20080052602A1

公开(公告)日：2008-02-28

申请号：US11925888

申请日：2007-10-27

申请人： Thomas Albrecht ,  Theodore Antonakopoulos ,  Giovanni Cherubini ,  Ajay Dholakia ,  Evangelos Eleftheriou ,  Charalampos Pozidis

发明人： Thomas Albrecht ,  Theodore Antonakopoulos ,  Giovanni Cherubini ,  Ajay Dholakia ,  Evangelos Eleftheriou ,  Charalampos Pozidis

IPC分类号： G06F11/10 ,  G11C29/52

CPC分类号： G06F11/1076 ,  B82Y10/00 ,  G06F2211/1042 ,  G11B9/14 ,  G11B9/1445 ,  G11B20/18

摘要： Methods and apparatus are provided for controlling writing and reading of data in an array of A storage fields of a probe-based data storage device in which data is written to and read from the array of storage fields by a corresponding array of probes. One method provides error-tolerance by exploiting the inherent parallelism of the probe storage array. A user data block to be written to the A-field array is first coded to produce a plurality of C-byte codewords, such that r.C=k1.A where r is the number of codewords and k1 is an integer≧1. A sub-blocks of k1 bytes are produced from the codewords by selecting successive bytes of each sub-block cyclically from the r codewords. The A sub-blocks are then written via respective probes to the corresponding storage fields of the storage field array.

摘要翻译： 提供了用于控制在基于探针的数据存储设备的A个存储区域阵列中的数据的写入和读取的方法和装置，其中通过相应的探针阵列将数据写入存储区阵列并从存储区域读取数据。 一种方法通过利用探针存储阵列的固有并行性来提供容错性。 要写入A场阵列的用户数据块首先被编码以产生多个C字节码字，使得r C = k 1 A其中r是码字数，k <1> 是整数> = 1。 通过从r个码字周期性地选择每个子块的连续字节，从码字产生k 1个字节的子块。 然后通过相应的探针将A个子块写入存储字段阵列的对应存储字段。

公开(公告)号：US20060064624A1

公开(公告)日：2006-03-23

申请号：US10945226

申请日：2004-09-20

申请人： Thomas Albrecht ,  Theodore Antonakopoulos ,  Giovanni Cherubini ,  Ajay Dholakia ,  Evangelos Eleftheriou ,  Charalampos Pozidis

发明人： Thomas Albrecht ,  Theodore Antonakopoulos ,  Giovanni Cherubini ,  Ajay Dholakia ,  Evangelos Eleftheriou ,  Charalampos Pozidis

IPC分类号： G11C29/00

CPC分类号： G06F11/1076 ,  B82Y10/00 ,  G06F2211/1042 ,  G11B9/14 ,  G11B9/1445 ,  G11B20/18

摘要： Methods and apparatus are provided for controlling writing and reading of data in an array of A storage fields of a probe-based data storage device in which data is written to and read from the array of storage fields by a corresponding array of probes. One method provides error-tolerance by exploiting the inherent parallelism of the probe storage array. A user data block to be written to the A-field array is first coded to produce a plurality of C-byte codewords, such that r.C=k1.A where r is the number of codewords and k1 is an integer≧1. A sub-blocks of k1 bytes are produced from the codewords by selecting successive bytes of each sub-block cyclically from the r codewords. The A sub-blocks are then written via respective probes to the corresponding storage fields of the storage field array.

摘要翻译： 提供了用于控制在基于探针的数据存储设备的A个存储区域阵列中的数据的写入和读取的方法和装置，其中通过相应的探针阵列将数据写入存储区阵列并从存储区域读取数据。 一种方法通过利用探针存储阵列的固有并行性来提供容错性。 要写入A场阵列的用户数据块首先被编码以产生多个C字节码字，使得r C = k 1 A其中r是码字数，k <1> 是整数> = 1。 通过从r个码字周期性地选择每个子块的连续字节，从码字产生k 1个字节的子块。 然后通过相应的探针将A个子块写入存储字段阵列的对应存储字段。

公开(公告)号：US06757325B1

公开(公告)日：2004-06-29

申请号：US09430698

申请日：1999-10-29

申请人： Youssef Abdelilah ,  Gordon Taylor Davis ,  Ajay Dholakia ,  Dongming Hwang ,  Fredy D. Neeser ,  Robert John Schule ,  Malcolm Scott Ware ,  Hua Ye

发明人： Youssef Abdelilah ,  Gordon Taylor Davis ,  Ajay Dholakia ,  Dongming Hwang ,  Fredy D. Neeser ,  Robert John Schule ,  Malcolm Scott Ware ,  Hua Ye

IPC分类号： H04L516

CPC分类号： H04L25/4927

摘要： Methods, modems and computer program products for detecting whether a remote modem is of a particular design type and for adjusting the communication configuration for a communication session based on a type of the remote modem. The modem type is recognized based on a knowledge that the modem design of certain manufacturers has a unique associated data pattern contained within the startup communication sequence which is not specified by the protocol but which can be demodulated and detected to thereby recognize that the remote modem is a particular manufacturer's design type. Based on knowledge of the characteristics of the remote modem design, various steps are taken which may improve performance of the communication connection in light of the particular modem design's characteristics. For example, a different Total Harmonic Distortion (THD) threshold may be used for falling back to V.34 communications when the remote modem design only supports up to 2 look ahead for spectrum shaping.

摘要翻译： 用于检测远程调制解调器是否是特定设计类型的方法，调制解调器和计算机程序产品，以及用于基于远程调制解调器的类型来调整通信会话的通信配置。 基于知道某些制造商的调制解调器设计具有包含在启动通信序列内的唯一关联数据模式的知识，可以识别调制解调器类型，该数据模式不是由协议规定的，而是可以被解调和检测，从而识别远程调制解调器 特定制造商的设计类型。 基于对远程调制解调器设计的特征的了解，采取了各种步骤，可以根据特定的调制解调器设计的特性改善通信连接的性能。 例如，当远程调制解调器设计仅支持最多2个前进用于频谱整形时，可以使用不同的总谐波失真（THD）阈值来回退到V.34通信。

公开(公告)号：US06665336B2

公开(公告)日：2003-12-16

申请号：US10428357

申请日：2003-05-02

申请人： Youssef Abdelilah ,  Gordon Taylor Davis ,  Jeffrey Haskell Derby ,  Ajay Dholakia ,  Evangelos Stavros Eleftheriou ,  Dongming Hwang ,  Fredy D. Neeser ,  Malcolm Scott Ware ,  Hua Ye

发明人： Youssef Abdelilah ,  Gordon Taylor Davis ,  Jeffrey Haskell Derby ,  Ajay Dholakia ,  Evangelos Stavros Eleftheriou ,  Dongming Hwang ,  Fredy D. Neeser ,  Malcolm Scott Ware ,  Hua Ye

IPC分类号： H04B1700

CPC分类号： H04L1/0021 ,  H04L1/0002 ,  H04L25/03057 ,  H04L25/4927 ,  H04L2025/03388 ,  Y02D50/10

摘要： Modems, methods, and computer program products select a data rate based on error signals in a modem. In an illustrative embodiment, error signals representing the difference between an output of an equalizer and an output of a detector are accumulated and an average error value is computed therefrom. A signal to noise ratio is determined using the average error value. The signal to noise ratio is then used to select a data rate. In another illustrative embodiment, the mean squared error at the output of the equalizer is determined and then used, along with the probability of error in correctly detecting a symbol, to select a data rate. Incorrect decisions in detecting received data symbols can cause a catastrophic failure in a decision feedback equalizer used in a modem receiver as errors are repeatedly fed back causing the tap coefficients for the equalizer filters to be shifted from their normal operating values. By adjusting the data rate in accordance with the error signals generated in a modem receiver, the decision feedback equalizer can operate with greater stability as the data rate can be reduced in response to increased noise conditions.

摘要翻译： 调制解调器，方法和计算机程序产品根据调制解调器中的错误信号选择数据速率。 在说明性实施例中，代表均衡器的输出和检测器的输出之间的差的误差信号被累加，并且从其计算出平均误差值。 使用平均误差值确定信噪比。 然后使用信噪比来选择数据速率。 在另一说明性实施例中，确定均衡器的输出处的均方误差，然后与正确检测符号的误差概率一起使用以选择数据速率。 检测接收到的数据符号时的不正确决定可能导致在调制解调器接收机中使用的判决反馈均衡器中的灾难性故障，因为错误被反复反馈，导致均衡器滤波器的抽头系数从其正常操作值偏移。 通过根据在调制解调器接收机中产生的误差信号来调整数据速率，当响应于增加的噪声条件可以减小数据速率时，判决反馈均衡器可以更稳定地工作。

公开(公告)号：US06650657B1

公开(公告)日：2003-11-18

申请号：US09429859

申请日：1999-10-29

申请人： Youssef Abdelilah ,  Gordon Taylor Davis ,  Ajay Dholakia ,  Dongming Hwang ,  Fredy D. Neeser ,  Malcolm Scott Ware ,  Hua Ye

发明人： Youssef Abdelilah ,  Gordon Taylor Davis ,  Ajay Dholakia ,  Dongming Hwang ,  Fredy D. Neeser ,  Malcolm Scott Ware ,  Hua Ye

IPC分类号： H04J324

CPC分类号： H04J3/125

摘要： Robbed Bit Signaling (RBS) and PAD digital impairments in sets of Digital Impairment Learning (DIL) signals that are repeatedly transmitted from a server modem to a client modem during DIL intervals are identified by identifying a PAD level for the sets of DIL signals in the DIL intervals and then identifying an RBS type for individual sets of DIL signals based upon the PAD levels so identified. The PAD level may be identified using model DIL signals that correspond to PAD levels that are not subject to RBS. The RBS type may be identified using model DIL signals that correspond to multiple RBS types that are subject to the identified PAD level. More specifically, one of the DIL intervals that contains DIL signals that are not subject to RBS is identified. A PAD level for the DIL signals in the one of the DIL intervals so identified then is determined. The PAD level that was determined is applied to the DIL signals in remaining ones of the DIL intervals, to identify an RBS for the DIL signals in the remaining ones of the DIL intervals.

摘要翻译： 通过在DIL间隔期间从服务器调制解调器重复发送到客户端调制解调器的数字损伤学习（DIL）信号中的Robbed位信令（RBS）和PAD数字损伤被识别为DIL信号组中的PAD电平 DIL间隔，然后基于所识别的PAD水平识别用于各组DIL信号的RBS类型。 可以使用对应于不受RBS的PAD电平的模型DIL信号来识别PAD电平。 可以使用对应于经受所识别的PAD电平的多个RBS类型的模型DIL信号来识别RBS类型。 更具体地，识别包含不受RBS的DIL信号的DIL间隔之一。 确定如此识别的DIL间隔之一中的DIL信号的PAD电平。 将确定的PAD电平应用于DIL间隔中剩余的DIL信号，以识别DIL间隔中剩余的DIL信号中的DBS信号的RBS。

公开(公告)号：US06341360B1

公开(公告)日：2002-01-22

申请号：US09264094

申请日：1999-03-08

申请人： Youssef Abdelilah ,  Gordon Taylor Davis ,  Jeffrey Haskell Derby ,  Ajay Dholakia ,  Evangelos Stavros Eleftheriou ,  Dongming Hwang ,  Fredy D. Neeser ,  Malcolm Scott Ware ,  Hua Ye

发明人： Youssef Abdelilah ,  Gordon Taylor Davis ,  Jeffrey Haskell Derby ,  Ajay Dholakia ,  Evangelos Stavros Eleftheriou ,  Dongming Hwang ,  Fredy D. Neeser ,  Malcolm Scott Ware ,  Hua Ye

IPC分类号： G06F1100

CPC分类号： H04L25/4927 ,  H04L25/03057 ,  H04L2025/03363 ,  H04L2025/03694

摘要： Decision feedback equalizers having a stabilization capability, and methods and computer program products for stabilizing a decision feedback equalizer under severe error conditions use output samples from an equalizer to determine whether a severe error event has occurred in accordance with predefined criteria. If a severe error occurs, then a determination is made to evaluate whether the number of severe errors that have occurred has exceeded a threshold. If the threshold has been exceeded, then the coefficients for the filter(s) in the decision feedback equalizer are preserved in their current state. Severe errors can cause the equalizer filter coefficients to be pulled away from their normal operating values, which can result in several modulation cycles passing before the coefficients are restored. By preserving the equalizer filter coefficients under severe error conditions, the present invention prevents sharp or dramatic changes to the coefficient values from their steady state values allowing the decision feedback equalizer to recover more quickly from the errors.

摘要翻译： 具有稳定能力的判决反馈均衡器，以及用于在严重误差条件下稳定判决反馈均衡器的方法和计算机程序产品，使用来自均衡器的输出样本来确定是否根据预定标准发生严重错误事件。 如果发生严重的错误，则进行判断，以评估发生的严重错误的数量是否超过阈值。 如果超过阈值，则判决反馈均衡器中滤波器的系数保持在其当前状态。 严重的错误可能导致均衡器滤波器系数从其正常工作值被拉开，这可能导致在系数恢复之前通过的多个调制周期。 通过在严重的误差条件下保持均衡器滤波器系数，本发明防止系数值从其稳定状态值的急剧或显着变化，从而允许判决反馈均衡器从错误中更快地恢复。

公开(公告)号：US07750675B2

公开(公告)日：2010-07-06

申请号：US11642012

申请日：2006-12-19

申请人： Ajay Dholakia ,  Jan Van Lunteren

发明人： Ajay Dholakia ,  Jan Van Lunteren

IPC分类号： H03K19/173 ,  H03K19/00

CPC分类号： G06F9/52

摘要： A method and computer program product for running state machines by the steps of running at least a first and a second state machine in parallel, observing at least the first state machine for at least one first synchronization rule, and changing the state of the second state machine when the first synchronization rule applies.

摘要翻译： 一种用于通过并行运行至少第一和第二状态机的步骤来运行状态机的方法和计算机程序产品，至少观察至少一个第一同步规则的第一状态机，并且改变第二状态的状态 当第一个同步规则适用时机器。

公开(公告)号：US20090307319A1

公开(公告)日：2009-12-10

申请号：US12135676

申请日：2008-06-09

申请人： Ajay Dholakia ,  William G. Pagan

发明人： Ajay Dholakia ,  William G. Pagan

IPC分类号： G06F15/16

CPC分类号： H04L12/1822 ,  H04L12/185 ,  H04L51/04

摘要： Computer-implemented methods, apparatus, and products for administering IM chat sessions including: identifying, by an IM module in dependence upon a merger policy, a plurality of IM participants to merge into a group IM chat session, the IM module providing IM services to one of the participants; and merging, by the IM module, the identified participants into the group IM chat session.

摘要翻译： 用于管理IM聊天会话的计算机实现的方法，装置和产品，包括：通过IM模块根据合并策略识别多个IM参与者以合并到IM组聊天会话中，IM模块向IM服务提供 参与者之一; 并通过IM模块将所识别的参与者合并到组IM聊天会话中。