利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

90 条记录 (耗时 0.025 秒)

    SIGNALING SYSTEM WITH LOW-POWER AUT0MATIC GAIN CONTROL
    31.
    发明申请
    SIGNALING SYSTEM WITH LOW-POWER AUT0MATIC GAIN CONTROL 有权
    具有低功率自动增益控制的信号系统

    公开(公告)号：US20090201090A1

    公开(公告)日：2009-08-13

    申请号：US12366612

    申请日：2009-02-05

    申请人： William J. Dally ,  John W. Poulton

    发明人： William J. Dally ,  John W. Poulton

    IPC分类号： H03G3/10

    CPC分类号： H03G3/3036 ,  H03G3/3052 ,  H03K2005/00039

    摘要： An integrated circuit device includes a variable-gain amplifier, memory circuit and gain control update circuit. The variable-gain amplifier generates an amplified signal having an amplitude according to a gain control value that is stored, at least during a first interval, within the memory circuit. The update circuit generates an updated gain control value based on the amplified signal during the first interval, and outputs the updated gain control value to the memory circuit to be stored therein at a conclusion of the first interval.

    摘要翻译： 集成电路装置包括可变增益放大器，存储电路和增益控制更新电路。 可变增益放大器至少在第一间隔期间内在存储器电路内产生具有根据增益控制值的幅度的放大信号。 更新电路基于第一间隔期间的放大信号产生更新的增益控制值，并且在第一间隔的结论处将更新的增益控制值输出到要存储在其中的存储器电路。

    Memory Controller With Multi-Modal Reference Pad
    32.
    发明申请
    Memory Controller With Multi-Modal Reference Pad 有权
    具有多模态参考电压的存储控制器

    公开(公告)号：US20090059642A1

    公开(公告)日：2009-03-05

    申请号：US12204728

    申请日：2008-09-04

    申请人： Frederick Ware ,  John Wilson ,  John C. Eble, III ,  Jade M. Kizer ,  Lei Luo ,  John W. Poulton ,  Ian Shaeffer

    发明人： Frederick Ware ,  John Wilson ,  John C. Eble, III ,  Jade M. Kizer ,  Lei Luo ,  John W. Poulton ,  Ian Shaeffer

    IPC分类号： G11C5/06 ,  G11C7/00 ,  G11C8/00

    CPC分类号： G11C5/063 ,  G11C5/147

    摘要： A memory controller operates in two modes to support different types of memory devices. In a first mode, the memory controller distributes a dedicated reference voltage with each of a plurality of signal bundles to a corresponding plurality of memory devices. The reference voltages are conveyed using pads that are alternatively used for e.g. timing-reference signals in a second mode, so the provision for bundle-specific reference voltages need not increase the number of pads on the memory controller.

    摘要翻译： 存储器控制器以两种模式操作以支持不同类型的存储器件。 在第一模式中，存储器控制器将具有多个信号束中的每一个的专用参考电压分配给相应的多个存储器件。 参考电压使用可替换地用于例如电极的焊盘传送。 定时参考信号处于第二模式，因此针对束特定参考电压的提供不需要增加存储器控制器上的焊盘数量。

    Communication system with low power, DC-balanced serial link
    33.
    发明授权
    Communication system with low power, DC-balanced serial link 有权
    具有低功率，直流平衡串行链路的通信系统

    公开(公告)号：US07199728B2

    公开(公告)日：2007-04-03

    申请号：US11040845

    申请日：2005-01-21

    申请人： William J Dally ,  John W Poulton

    发明人： William J Dally ,  John W Poulton

    IPC分类号： H03M7/00

    CPC分类号： H04L25/4904

    摘要： A data communication system comprises a transmission line between first and second integrated circuits. An encoder on the first integrated circuit encodes an input data stream to produce a sequence of codewords, wherein codewords in the sequence are members of a set of codewords representing data in the input data stream, and the members of the set are substantially DC balanced, such as a Manchester encoded symbol set. An integrating circuit on the second integrated circuit integrates codewords by integrating for a first interval with a positive polarity within a particular symbol cell, and integrating for a second interval with a negative polarity within the particular symbol cell, to produce output representing the codewords. A sense circuit produces an output data stream.

    摘要翻译： 数据通信系统包括第一和第二集成电路之间的传输线。 第一集成电路上的编码器对输入数据流进行编码以产生码字序列，其中该序列中的码字是表示输入数据流中的数据的一组码字的成员，并且该组的成员基本上是直流平衡的， 如曼彻斯特编码符号集。 第二集成电路上的积分电路通过将特定符号单元内的正极性的第一间隔积分并且在特定符号单元内积分具有负极性的第二间隔来积分代码字，以产生表示代码字的输出。 感测电路产生输出数据流。

    Architectures for a single-stage grooming switch
    35.
    发明授权
    Architectures for a single-stage grooming switch 有权
    单阶段美容开关架构

    公开(公告)号：US06807186B2

    公开(公告)日：2004-10-19

    申请号：US10052233

    申请日：2002-01-17

    申请人： William J. Dally ,  John Edmondson ,  Donald A. Priore ,  Ephrem Wu ,  John W. Poulton

    发明人： William J. Dally ,  John Edmondson ,  Donald A. Priore ,  Ephrem Wu ,  John W. Poulton

    IPC分类号： H04L1228

    CPC分类号： H04L49/405 ,  H04Q3/521

    摘要： A single-stage grooming switch is provided for switching streams of multiplexed traffic, such as SONET STS-48, in both time and space domains. In particular, the switch implements a distributed demultiplexing architecture for switching between any input timeslot to any output timeslot at a reduced layout size. Furthermore, the distributed demultiplexing architecture results in low latencies being associated with reconfiguration of output permutations on the order of nanoseconds.

    摘要翻译： 提供单级梳理开关，用于在时域和空间域中切换多路复用业务流，如SONET STS-48。 特别地，交换机实现分布式解复用架构，用于在减少的布局大小的任何输入时隙之间切换到任何输出时隙。 此外，分布式解复用架构导致低延迟与纳秒级的输出排列的重新配置相关联。

    Methods and systems for transmitting and receiving differential signals over a plurality of conductors
    36.
    发明授权
    Methods and systems for transmitting and receiving differential signals over a plurality of conductors 有权
    用于在多个导体上发送和接收差分信号的方法和系统

    公开(公告)号：US06556628B1

    公开(公告)日：2003-04-29

    申请号：US09302461

    申请日：1999-04-29

    申请人： John W. Poulton ,  Stephen G. Tell ,  Robert E. Palmer

    发明人： John W. Poulton ,  Stephen G. Tell ,  Robert E. Palmer

    IPC分类号： H04B300

    CPC分类号： H04L25/4925 ,  H04L25/0266 ,  H04L25/085

    摘要： Methods and systems for differential signaling include transmitting differential signals over N conductors, where N is greater than 2, from a sender to a receiver. The sender includes multiple transmitters that receive digital data and produce output signals based on the digital data. The output signals result in currents on conductors between the transmitters and multiple receivers. For any given symbol, the sum of the currents on the conductors is preferably equal to zero. In addition, a voltage difference preferably exists across the input terminals of each receiver. Methods and systems for coding binary data for transmission over a multi-conductor differential signaling system include converting input binary data into symbol numbers, converting the symbol numbers into valid drive words for a multi-conductor differential signaling system, and inputting the valid drive words to multiple differential transmitters.

    摘要翻译： 用于差分信号的方法和系统包括从N个导体发送差分信号，其中N大于2，从发送器到接收器。 发送器包括接收数字数据并根据数字数据产生输出信号的多个发射器。 输出信号会导致发射器和多个接收器之间导体上的电流。 对于任何给定的符号，导体上的电流之和优选等于零。 此外，优选地，在每个接收器的输入端子之间存在电压差。 用于编码用于通过多导体差分信号系统传输的二进制数据的方法和系统包括将输入二进制数据转换成符号号，将符号数转换成用于多导体差分信号系统的有效驱动字，以及将有效驱动字输入到 多个差分发射机。

    Data-driven charge-pump transmitter for differential signaling
    38.
    发明授权
    Data-driven charge-pump transmitter for differential signaling 有权
    用于差分信号的数据驱动电荷泵发射器

    公开(公告)号：US09338036B2

    公开(公告)日：2016-05-10

    申请号：US13361843

    申请日：2012-01-30

    申请人： John W. Poulton ,  Thomas Hastings Greer, III ,  William J. Dally

    发明人： John W. Poulton ,  Thomas Hastings Greer, III ,  William J. Dally

    IPC分类号： H03K19/0175 ,  H04L25/02

    CPC分类号： H04L25/0272 ,  H01L2224/05554 ,  H01L2224/48137 ,  H01L2224/49175 ,  H01L2924/13091 ,  H01L2924/30107 ,  H01L2924/3011 ,  H01L2924/30111 ,  H01L2924/00

    摘要： One embodiment of the present invention sets forth a mechanism for transmitting and receiving differential signals. A transmitter combines a direct current (DC) to DC converter including a capacitor with a 2:1 multiplexer to drive a pair of differential signaling lines. The transmitter drives a pair of voltages that are symmetric about the ground power supply level. Signaling currents are returned to the ground plane to minimize the generation of noise that is a source of crosstalk between different differential signaling pairs. Noise introduced through the power supply is correlated with the switching rate of the data and may be reduced using an equalizer circuit.

    摘要翻译： 本发明的一个实施例提出了用于发送和接收差分信号的机制。 发射机将直流（DC）到DC转换器组合，包括具有2：1多路复用器的电容器，以驱动一对差分信号线。 发射机驱动一对对地面电源电平对称的电压。 信号电流返回到接地平面，以最小化作为不同差分信号对之间串扰源的噪声的产生。 通过电源引入的噪声与数据的切换速率相关，并且可以使用均衡器电路来减小。

    Voltage mode transmitter equalizer
    40.
    发明授权
    Voltage mode transmitter equalizer 有权
    电压模式变送器均衡器

    公开(公告)号：US08633733B2

    公开(公告)日：2014-01-21

    申请号：US13260549

    申请日：2010-03-26

    申请人： Wayne D. Dettloff ,  John W. Poulton ,  John M. Wilson

    发明人： Wayne D. Dettloff ,  John W. Poulton ,  John M. Wilson

    IPC分类号： H03K19/094

    CPC分类号： H04L25/03343 ,  H04L25/0272 ,  H04L25/0278 ,  H04L25/03885

    摘要： A voltage mode transmitter equalizer has high efficiencies, yet consumes substantially constant supply current from the power supply and provides constant back-match impedance. The voltage mode transmitter equalizer is configured such that the output voltage of the signal to be output on a pair of transmission lines can be controlled according to the input data, but its return impedance is substantially matched to the differential impedance of the transmission lines and it draws substantially constant supply current from the power supply regardless of the output voltage of the signal. Further, an equalizer for a voltage-mode transmitter provides fine-granularity equalization settings by employing a variable pull-up conductance and a variable pull-down conductance. Conductance is varied by selectively enabling a plurality of conductance channels, at least some of which have resistance values that are distinct from one another.

    摘要翻译： 电压模式发射机均衡器具有高效率，但是从电源消耗基本恒定的电源电流并提供恒定的反匹配阻抗。 电压模式发射机均衡器被配置为使得可以根据输入数据来控制要在一对传输线上输出的信号的输出电压，但是其返回阻抗基本上与传输线的差分阻抗匹配，并且它 无论信号的输出电压如何，都能从电源中抽取大致恒定的电源电流。 此外，用于电压模式发射机的均衡器通过采用可变上拉电导和可变下拉电导来提供细粒度均衡设置。 通过选择性地启用多个电导通道来改变电导，其中至少一些导电通道具有彼此不同的电阻值。