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    Systems, methods and computer program products for data mode refinement of modem constellation points
    32.
    发明授权
    Systems, methods and computer program products for data mode refinement of modem constellation points 失效
    用于数据模式改进的系统，方法和计算机程序产品的调制解调器星座点

    公开(公告)号：US06611563B1

    公开(公告)日：2003-08-26

    申请号：US09429799

    申请日：1999-10-29

    申请人： Gordon Taylor Davis ,  Ajay Dholakia ,  Malcolm Scott Ware

    发明人： Gordon Taylor Davis ,  Ajay Dholakia ,  Malcolm Scott Ware

    IPC分类号： H04B1404

    CPC分类号： G11B20/1403 ,  H04B14/04 ,  H04L25/4927

    摘要： Methods, systems and computer program products are provided for refining constellation values in a Pulse Code Modulated (PCM) code point sequence of a PCM modem by averaging received levels associated with received symbols for a code point of interest received during data mode operation of the PCM modem so as to provide an average received level for the code point of interest and revising a constellation value corresponding to the code point of interest in the PCM code sequence based on the average received level for the code point of interest so as to provide a refined constellation value. Preferably, the averaging is performed by detecting that a symbol corresponding to the code point of interest has been received by the PCM modem and incorporating the received level of the symbol into a running sum of previously received levels for the symbol. If a predefined number of received levels have been incorporated into the running sum then the running sum is divided by the predefined number of receive levels. It is also preferred that, after determining the sum for the code point of interest, the running sum is set to zero and a new code point selected as the code point of interest.

    摘要翻译： 提供了方法，系统和计算机程序产品，用于通过对在PCM的数据模式操作期间接收到的感兴趣代码点的接收到的符号进行平均的接收电平来对PCM调制解调器的脉码调制（PCM）码点序列中的星座值进行平均化 调制解调器，以提供感兴趣的代码点的平均接收电平，并且基于用于代码点的平均接收电平来修改与PCM码序列中的码感兴趣点相对应的星座值，以便提供精确的 星座价值 优选地，通过检测到PCM调制解调器已经接收到与感兴趣的代码点相对应的符号，并将符号的接收电平并入先前接收到的符号电平的运算和来执行平均。 如果预定义数量的接收电平已被合并到运行总和中，则运行总和除以预定数量的接收电平。 还优选的是，在确定感兴趣的代码点的和之后，将运行和设置为零，并将新的代码点选为感兴趣的代码点。

    Method for reducing power state in a computer system out-of-band when a request for reducing the power state is not immediately serviceable in band according to a priority of the request
    33.
    发明授权
    Method for reducing power state in a computer system out-of-band when a request for reducing the power state is not immediately serviceable in band according to a priority of the request 有权
    当降低功率状态的请求根据请求的优先级不能立即在频带中可用时，减少计算机系统中的计算机系统中的功率状态的方法

    公开(公告)号：US08458499B2

    公开(公告)日：2013-06-04

    申请号：US12537933

    申请日：2009-08-07

    申请人： Thomas M. Brey ,  Ajay Dholakia ,  Scott N. Dunham ,  Sumeet Kochar

    发明人： Thomas M. Brey ,  Ajay Dholakia ,  Scott N. Dunham ,  Sumeet Kochar

    IPC分类号： G06F1/26 ,  G06F1/32

    CPC分类号： G06F1/3203 ,  G06F1/324 ,  G06F1/3296 ,  Y02D10/126 ,  Y02D10/172

    摘要： One embodiment provides a method of managing power in a computer system. A device of the computer system is operated at a selected power-state. The power consumption of the computer system is monitored. If the power consumption of the computer system is approaching or has exceeded a power cap selected for the computer system, then a request to reduce the power-state for the device is generated in response. The operating system is used to service the request to reduce the power-state according to the priority of the request. The reduced power state is forced out-of-band following the request to reduce the power-state if the request is not immediately serviceable by the operating system. Different approaches can be taken to force the reduced power state, using, for example, system management mode or a platform environment control interface.

    摘要翻译： 一个实施例提供了一种管理计算机系统中的电力的方法。 计算机系统的设备在选定的功率状态下运行。 监控计算机系统的功耗。 如果计算机系统的功率消耗正在接近或超过为计算机系统选择的功率上限，则响应地产生用于减少设备的功率状态的请求。 操作系统用于根据请求的优先级来服务请求以减少功率状态。 如果请求不能由操作系统立即维护，则降低功率状态被强制为带外的请求，以减少功率状态。 可以采用不同的方法来强制使用例如系统管理模式或平台环境控制接口来降低功率状态。

    WRITING AND READING OF DATA IN PROBE-BASED DATA STORAGE DEVICES
    35.
    发明申请
    WRITING AND READING OF DATA IN PROBE-BASED DATA STORAGE DEVICES 失效
    在基于数据存储的数据存储设备中写入和读取数据

    公开(公告)号：US20080052601A1

    公开(公告)日：2008-02-28

    申请号：US11925872

    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=k1A where r is the number of codewords and k1 is an integer greater than or equal to 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rC = k1A其中r是码字的数量， SUB> 1 是大于或等于1的整数。通过从r循环地选择每个子块的连续字节，从码字产生k个1字节的子块 码字。 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。

    Receivers, methods, and computer program products for an analog modem that receives data signals from a digital modem
    36.
    发明授权
    Receivers, methods, and computer program products for an analog modem that receives data signals from a digital modem 失效
    用于从数字调制解调器接收数据信号的模拟调制解调器的接收器，方法和计算机程序产品

    公开(公告)号：US07003030B2

    公开(公告)日：2006-02-21

    申请号：US10635194

    申请日：2003-08-06

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

    IPC分类号： H03K5/159

    CPC分类号： H04L7/0062 ,  H04L7/0029 ,  H04L2025/03363 ,  H04L2025/0342 ,  H04L2025/0349

    摘要： Receivers, methods, and computer program products can be used to demodulate a data signal transmitted from a digital source, which has a network sampling rate that is synchronized with a network clock. In an illustrative embodiment, a receiver includes a two-stage interpolator that receives digital samples of the data signal as an input and produces an interpolated digital sample stream to be filtered by an adaptive fractionally spaced decision feedback equalizer. The digital samples received in the interpolator are synchronized with a local clock; however, the interpolated sample stream is synchronized with the network clock. A slicer generates symbols for the samples output from the decision feedback equalizer by comparing the samples with a reference signaling alphabet. The receiver can be used in a V.90 client modem to demodulate pulse code modulated (PCM) data transmitted as pulse amplitude modulated (PAM) signals from a digital network. In addition, the receiver is compatible with legacy analog modem front ends and transmitters. The two-stage interpolator allows the timing synchronization to be performed with extremely fine granularity, which can be useful in PCM modems that typically require relatively high signal to noise ratios.

    摘要翻译： 接收器，方法和计算机程序产品可用于解调从具有与网络时钟同步的网络采样速率的数字源发送的数据信号。 在说明性实施例中，接收机包括二阶插值器，其接收作为输入的数据信号的数字样本，并产生经过自适应分数间隔的判决反馈均衡器滤波的内插数字样本流。 在内插器中接收的数字样本与本地时钟同步; 然而，插值的采样流与网络时钟同步。 切片器通过将样本与参考信号字母表进行比较来生成从判决反馈均衡器输出的样本的符号。 接收机可用于V.90客户端调制解调器中，以解调从数字网络传输的脉冲编码调制（PCM）数据作为脉冲幅度调制（PAM）信号。 此外，接收机与传统模拟调制解调器前端和发射机兼容。 两级内插器允许以非常精细的粒度执行定时同步，这在通常需要相对较高的信噪比的PCM调制解调器中是有用的。

    Systems, methods and computer program products for identifying digital impairments in modems based on clusters and/or skips in pulse code modulation signal levels
    37.
    发明授权
    Systems, methods and computer program products for identifying digital impairments in modems based on clusters and/or skips in pulse code modulation signal levels 失效
    用于基于脉冲编码调制信号电平中的簇和/或跳跃识别调制解调器中的数字损伤的系统，方法和计算机程序产品

    公开(公告)号：US06816545B1

    公开(公告)日：2004-11-09

    申请号：US09430217

    申请日：1999-10-29

    申请人： Gordon Taylor Davis ,  Ajay Dholakia ,  Dongming Hwang ,  Malcolm Scott Ware ,  Hua Ye

    发明人： Gordon Taylor Davis ,  Ajay Dholakia ,  Dongming Hwang ,  Malcolm Scott Ware ,  Hua Ye

    IPC分类号： H04B138

    CPC分类号： H04L25/4927

    摘要： Digital impairments in a set of Pulse Code Modulation (PCM) signal levels that are received at a client modem from a server modem are identified by compressing the set of PCM signal levels into a signature. Digital impairments are determined based on the signature. In a preferred embodiment, the PCM signal levels are compressed into a signature by identifying clusters and/or skips in the set of PCM signal levels. In particular, when transmitting PCM signal levels from a server modem to a client modem over a connection that is subject to digital impairments such as Robbed Bit Signaling (RBS) and/or PAD digital impairments and quantization, some adjacent PCM signal levels may become identical or very close to one another. Moreover, other adjacent signal levels may have a difference that is at least approximately twice the difference of other levels. The former phenomenon is referred to as a “cluster” and the latter phenomenon is referred to as a “skip”. By identifying clusters and/or skips in the set of PCM signals that are received at the client modem from the server modem, a signature of the network connection may be obtained. Digital impairments including RBS and/or PAD may be identified using the signature.

    摘要翻译： 在服务器调制解调器的客户端调制解调器处接收的一组脉冲编码调制（PCM）信号电平中的数字损伤通过将该组PCM信号电平压缩成签名来识别。 数字损伤是根据签名确定的。 在优选实施例中，PCM信号电平通过识别PCM信号电平集合中的簇和/或跳跃而被压缩成签名。 特别地，当通过诸如Robbed Bit Signaling（RBS）和/或PAD数字损伤和量化的数字损伤的连接从服务器调制解调器传送PCM信号电平到客户端调制解调器时，一些相邻的PCM信号电平可能变得相同 或者彼此非常接近。 此外，其他相邻信号电平可以具有至少大约其他电平的两倍的差值。 前一种现象称为“簇”，后一种现象称为“跳过”。 通过从服务器调制解调器识别在客户端调制解调器处接收到的一组PCM信号中的簇和/或跳过，可以获得网络连接的签名。 可以使用签名来识别包括RBS和/或PAD的数字损伤。

    Modems having a dual power mode capability and methods of operating same
    38.
    发明授权
    Modems having a dual power mode capability and methods of operating same 失效
    具有双功率模式能力的调制解调器和操作相同的方法

    公开(公告)号：US06792040B1

    公开(公告)日：2004-09-14

    申请号：US09430678

    申请日：1999-10-29

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

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

    IPC分类号： H04L516

    CPC分类号： H04M11/06 ,  H03G3/3036 ,  H04L5/1438 ,  H04L25/03063

    摘要： Modems, methods, and computer program products provide a dual power mode capability in which a maximum power limit is determined for a received signal and, based on that determination, at least one modem operational parameter is adjusted and/or digital impairment learning (DIL) sequence is selected. Adjustments made to the operational parameters may allow a modem to operate in a high power mode to achieve a higher downstream data rate. The higher downstream data rate may be attributed to an improved SNR resulting from an increase in data transmission power. Moreover, the modem may also operate in a normal power mode where the operational parameters may be set to maximize the client modem receiver's dynamic range. By selecting the DIL sequence based on the power limit, a DIL signal containing symbols having power levels within the power limit may be selected.

    摘要翻译： 调制解调器，方法和计算机程序产品提供双功率模式能力，其中为接收到的信号确定最大功率限制，并且基于该确定，调整至少一个调制解调器操作参数和/或数字损伤学习（DIL） 选择序列。 对操作参数进行的调整可允许调制解调器以高功率模式工作，以实现更高的下行数据速率。 较高的下行数据速率可能归因于由于数据传输功率的增加而导致的改善的SNR。 此外，调制解调器还可以以正常功率模式操作，其中可以设置操作参数以最大化客户端调制解调器接收机的动态范围。 通过基于功率限制选择DIL序列，可以选择包含具有功率限制内的功率电平的符号的DIL信号。