Dynamic multiphase operation
    51.
    发明授权
    Dynamic multiphase operation 有权
    动态多相操作

    公开(公告)号:US07696732B2

    公开(公告)日:2010-04-13

    申请号:US12355877

    申请日:2009-01-19

    IPC分类号: G05F1/652 G05F1/656

    CPC分类号: H02M3/1584 H02M3/157

    摘要: An output regulator includes a plurality of switch arrays. A controller enables selected ones of the plurality of switch arrays in response to a sense signal. The sense signal is based on an output of the output regulator. The controller generates drive signals to control the selected ones of the plurality of switch arrays. The controller adjusts first selected pulses in an output phase of the selected ones of the plurality of switch arrays based on a first pulse width. The controller adjusts second selected pulses in the output phase of the selected ones of the plurality of switch arrays based on a second pulse width greater than or less than the first pulse width.

    摘要翻译: 输出调节器包括多个开关阵列。 控制器响应于感测信号使得多个开关阵列中的选定的开关阵列。 感测信号基于输出调节器的输出。 控制器产生驱动信号以控制多个开关阵列中的选定的开关阵列。 控制器基于第一脉冲宽度来调整多个开关阵列中选定的开关阵列的输出相位中的第一选定脉冲。 控制器基于大于或小于第一脉冲宽度的第二脉冲宽度来调节多个开关阵列中选定的开关阵列的输出相位中的第二选定脉冲。

    Adaptive analog echo/next cancellation
    52.
    发明授权
    Adaptive analog echo/next cancellation 有权
    自适应模拟回波/下一个取消

    公开(公告)号:US07688968B1

    公开(公告)日:2010-03-30

    申请号:US10942761

    申请日:2004-09-16

    IPC分类号: H04M9/08

    CPC分类号: H04B3/32 H04B3/23

    摘要: An adaptive analog echo/near-end crosstalk (NEXT) cancellation system includes a selector that outputs a first error control signal when a first receive signal does not include a remotely transmitted signal and a second error control signal when the first receive signal includes a remotely transmitted signal. An echo/NEXT cancellation module communicates with the selector and generates an estimated echo/NEXT signal based on the first error control signal and a first transmit signal when the first receive signal does not include a remotely transmitted signal and based on the second error control signal and the first transmit signal when the first receive signal includes a remotely transmitted signal. A summing module receives the first receive signal and the estimated echo/NEXT signal and generates an echo/NEXT filtered receive signal by subtracting the estimated echo/NEXT signal from the first receive signal.

    摘要翻译: 自适应模拟回波/近端串扰(NEXT)消除系统包括:当第一接收信号不包括远程发送信号时输出第一误差控制信号的选择器和当第一接收信号包括远程发送信号时的第二错误控制信号 传输信号。 回波/ NEXT取消模块与选择器进行通信,并且当第一接收信号不包括远程发送的信号并基于第二误差控制信号时,基于第一误差控制信号和第一发射信号产生估计回波/ NEXT信号 以及当第一接收信号包括远程发送信号时的第一发送信号。 求和模块接收第一接收信号和估计的回波/ NEXT信号,并通过从第一接收信号减去估计的回波/ NEXT信号来产生回波/ NEXT滤波的接收信号。

    Transmitter digital-to-analog converter with noise shaping
    54.
    发明授权
    Transmitter digital-to-analog converter with noise shaping 有权
    具有噪声整形功能的发射器数模转换器

    公开(公告)号:US07436337B1

    公开(公告)日:2008-10-14

    申请号:US11636069

    申请日:2006-12-08

    IPC分类号: H03M3/00

    摘要: A noise shaping module comprises a first addition module that receives a digital input signal and generates an output signal. A truncation module generates a truncated output signal based on an output of said first addition module. A filter module generates a filtered output based on a combination of output signal of the first addition module and the truncated output signal of the first truncation module.

    摘要翻译: 噪声整形模块包括接收数字输入信号并产生输出信号的第一加法模块。 截断模块基于所述第一加法模块的输出产生截断的输出信号。 滤波器模块基于第一加法模块的输出信号和第一截断模块的截断输出信号的组合来生成滤波输出。

    Nonlinear echo compensator for class B transmitter line driver
    55.
    发明授权
    Nonlinear echo compensator for class B transmitter line driver 有权
    B类发射机线路驱动器的非线性回波补偿器

    公开(公告)号:US07409057B1

    公开(公告)日:2008-08-05

    申请号:US10189321

    申请日:2002-07-03

    IPC分类号: H04M9/08

    CPC分类号: H04B3/32 H04B3/231

    摘要: A nonlinear echo compensator compensates for nonlinear echo in a transceiver including a transmitter line driver with current cells that are operated in a Class B operating mode. A mapping circuit generates a pattern dependent driving signal. A coefficient generator generates a compensator coefficient. A canceling circuit communicates with the mapping circuit and the coefficient generator and compensates for nonlinear echo in a received signal based on the pattern dependent driving signal and the compensator coefficient.

    摘要翻译: 非线性回波补偿器补偿收发器中的非线性回波,包括具有在B类操作模式下操作的当前单元的发射机线路驱动器。 映射电路产生与图形相关的驱动信号。 系数发生器产生补偿系数。 取消电路与映射电路和系数发生器通信,并且基于模式相关的驱动信号和补偿器系数来补偿接收信号中的非线性回波。

    Thermal asperity compensation in perpendicular recording
    57.
    发明授权
    Thermal asperity compensation in perpendicular recording 有权
    垂直记录中的热凹凸补偿

    公开(公告)号:US07286311B1

    公开(公告)日:2007-10-23

    申请号:US10754325

    申请日:2004-01-09

    IPC分类号: G11B5/02

    摘要: A data detection circuit includes a transient detector that senses transient events in data. A first data detector path applies a first equalization target to generate a first bit stream from the data. A second data detector path applies a second equalization target to generate a second bit stream from the data. A baseline correction circuit generates a baseline correction signal using the first bit stream when the transient detector does not sense the transient events and the second bit stream when the transient detector senses the transient events. The first equalization target is a non-DC free equalization target and the second equalization target is a DC-free equalization target. When transients are detected during a sector, the detection circuit continues using the DC-free equalization target until the sector ends.

    摘要翻译: 数据检测电路包括检测数据中的瞬态事件的瞬态检测器。 第一数据检测器路径应用第一均衡目标以从数据生成第一比特流。 第二数据检测器路径应用第二均衡目标以从数据生成第二位流。 当瞬态检测器感测瞬态事件时,当瞬态检测器不感测瞬态事件时,基线校正电路使用第一比特流产生基线校正信号。 第一均衡目标是非DC自由均衡目标,第二均衡目标是无DC均衡目标。 当在扇区期间检测到瞬变时,检测电路继续使用无DC均衡目标直到扇区结束。

    Receiver with dual D.C. noise cancellation circuits
    58.
    发明授权
    Receiver with dual D.C. noise cancellation circuits 有权
    具有双路直流消除电路的接收器

    公开(公告)号:US07257375B1

    公开(公告)日:2007-08-14

    申请号:US11028223

    申请日:2005-01-04

    申请人: Runsheng He

    发明人: Runsheng He

    IPC分类号: H04B1/00 H04B17/00 H04B1/18

    CPC分类号: H04B1/30 H04L25/063

    摘要: A receiver for eliminating D.C. noise from a signal received from a communication channel includes an input circuit configured to receive an input signal. The receiver includes an error circuit configured to generate an error signal in accordance with the input signal from the input circuit. The receiver includes a first noise canceler responsive to the error circuit. The first noise canceler is configured to generate a first noise cancellation signal in response to the error signal from the error circuit. The receiver includes a second noise canceler responsive to the error circuit and the first noise canceler. The second noise canceler is configured to generate a second noise cancellation signal from the error signal from the error circuit and the first noise cancellation signal from the first noise canceler. The input circuit is responsive to the second noise cancellation signal from the second noise canceler.

    摘要翻译: 用于从通信信道接收的信号中消除干扰噪声的接收机包括被配置为接收输入信号的输入电路。 接收机包括被配置为根据来自输入电路的输入信号产生误差信号的误差电路。 接收机包括响应于误差电路的第一噪声消除器。 第一噪声消除器被配置为响应于来自误差电路的误差信号产生第一噪声消除信号。 接收机包括响应于误差电路和第一噪声消除器的第二噪声消除器。 第二噪声消除器被配置为从来自误差电路的误差信号和来自第一噪声消除器的第一噪声消除信号产生第二噪声消除信号。 输入电路响应于来自第二噪声消除器的第二噪声消除信号。

    Cable tester
    59.
    发明授权
    Cable tester 有权
    电缆测试仪

    公开(公告)号:US07250771B1

    公开(公告)日:2007-07-31

    申请号:US11455359

    申请日:2006-06-19

    IPC分类号: G01R31/11

    CPC分类号: G01R31/021 G01R31/11

    摘要: A cable tester comprises a test initiating module that performs B cable tests. Each of said B cable tests includes selectively transmitting a test pulse on the cable, measuring a reflection amplitude, and calculating a cable length. A test results module determines a cable status for each of said B cable tests based on said measured amplitude and said calculated cable length and that determines an overall cable status of the cable based on the cable at least one of passing and failing A out of B cable tests. A and B are integers greater than zero and B is greater than A.

    摘要翻译: 电缆测试仪包括执行B电缆测试的测试启动模块。 所述B电缆测试中的每一个包括选择性地在电缆上发送测试脉冲,测量反射幅度以及计算电缆长度。 测试结果模块基于所述测量的幅度和所计算的电缆长度来确定每个所述B电缆测试的电缆状态,并且基于所述电缆确定所述电缆的整体电缆状态,所述电缆至少一个通过和失败的B中的A 电缆测试。 A和B是大于零的整数,B大于A.

    A/D converter for wideband digital communication
    60.
    发明授权
    A/D converter for wideband digital communication 有权
    用于宽带数字通信的A / D转换器

    公开(公告)号:US07158061B1

    公开(公告)日:2007-01-02

    申请号:US11001927

    申请日:2004-12-01

    IPC分类号: H03M1/62

    CPC分类号: H03M1/1235

    摘要: Circuitry for providing non-uniform analog-to-digital (“A/D”) signal conversion for wideband signals is provided. The circuitry of the invention is optimized for wideband signals because it does not sacrifice the small-scale resolution of high-probability signal amplitudes while preventing the clipping of low-probability signal amplitudes. The circuitry includes a nonlinear amplifier and an A/D converter that may be uniform or non-uniform. The digital output of the A/D converter may be further processed by circuitry that has an output function that is the inverse of that of the nonlinear amplifier, so as to maintain linear A/D conversion.

    摘要翻译: 提供了用于为宽带信号提供不均匀模数(“A / D”)信号转换的电路。 本发明的电路针对宽带信号进行了优化,因为它不会牺牲高概率信号幅度的小规模分辨率,同时防止低概率信号幅度的削波。 电路包括可以是均匀的或不均匀的非线性放大器和A / D转换器。 A / D转换器的数字输出可以由具有与非线性放大器的输出函数相反的输出函数的电路进一步处理,以便保持线性A / D转换。