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133 条记录 (耗时 0.034 秒)

    Circuits, methods, apparatus, and systems for recovery of spread spectrum clock
    32.
    发明授权
    Circuits, methods, apparatus, and systems for recovery of spread spectrum clock 有权
    用于恢复扩频时钟的电路，方法，装置和系统

    公开(公告)号：US07742556B1

    公开(公告)日：2010-06-22

    申请号：US11376601

    申请日：2006-03-14

    申请人： Haoli Qian ,  Runsheng He

    发明人： Haoli Qian ,  Runsheng He

    IPC分类号： H03D3/24

    CPC分类号： H04L7/033 ,  H03L7/0807 ,  H03L7/0812 ,  H04L7/002

    摘要： Circuits, methods, apparatus, and systems for recovering a clock from a spread spectrum signal having a periodic modulation profile. The circuits generally include an error detector circuit configured to compare the spread spectrum signal and a recovered clock signal, and to produce a first error signal corresponding to the periodic modulation profile and a second error signal corresponding to phase differences other than the spread spectrum modulation, a record and playback unit configured to record a value to a frequency memory, said value based on the first error signal and produce a third error signal corresponding to a predicted periodic modulation based at least in part on the recorded value, and a signal generator configured to produce the recovered clock signal in response to the second and third error signals.

    摘要翻译： 用于从具有周期性调制曲线的扩频信号中恢复时钟的电路，方法，装置和系统。 电路通常包括错误检测器电路，其被配置为比较扩频信号和恢复的时钟信号，并且产生对应于周期性调制分布图的第一误差信号和对应于扩频调制以外的相位差的第二误差信号， 记录和重放单元，被配置为基于所述第一误差信号将值记录到频率存储器，并且至少部分地基于所述记录值产生与预测的周期性调制相对应的第三误差信号，以及信号发生器被配置 以响应于第二和第三误差信号产生恢复的时钟信号。

    Image cancellation in receivers
    33.
    发明授权
    Image cancellation in receivers 失效
    接收器中的图像消除

    公开(公告)号：US07684778B1

    公开(公告)日：2010-03-23

    申请号：US11225685

    申请日：2005-09-12

    申请人： Haoli Qian ,  Xiang Guang Feng ,  Runsheng He ,  Zhipei Chi

    发明人： Haoli Qian ,  Xiang Guang Feng ,  Runsheng He ,  Zhipei Chi

    IPC分类号： H04B1/10

    CPC分类号： H04B1/28 ,  H04B1/0032

    摘要： Systems and techniques relating to image cancellation in received communications signals are described. In one aspect, a received communications signal can include a desired signal and an image signal. A leakage tracing signal can be generated, and the image signal can be removed from the communications signal using the leakage tracing signal mixed with the communications signal. Implementations can include generating a first channel signal and a second channel signal, generating a first filter using the first channel signal and the leakage tracing signal, and generating a second filter using the second channel signal and the leakage tracing signal. Removing the image signal from the communications signal can include filtering the first channel signal using the second filter to obtain a first filtered signal, filtering the second channel signal using the first filter to obtain a second filtered signal, and subtracting the second filtered signal from the first filtered signal.

    摘要翻译： 描述与接收的通信信号中的图像消除有关的系统和技术。 在一个方面，接收的通信信号可以包括期望的信号和图像信号。 可以产生泄漏跟踪信号，并且可以使用与通信信号混合的泄漏跟踪信号从通信信号中去除图像信号。 实现可以包括产生第一信道信号和第二信道信号，使用第一信道信号和泄漏跟踪信号产生第一滤波器，以及使用第二信道信号和泄漏跟踪信号产生第二滤波器。 从通信信号中去除图像信号可以包括使用第二滤波器对第一信道信号进行滤波以获得第一滤波信号，使用第一滤波器对第二信道信号进行滤波以获得第二滤波信号，以及从第 第一个滤波信号。

    Pre-emptive power supply control system and method
    34.
    发明授权
    Pre-emptive power supply control system and method 有权
    先发电源控制系统及方法

    公开(公告)号：US07472295B2

    公开(公告)日：2008-12-30

    申请号：US11403717

    申请日：2006-04-13

    申请人： Runsheng He ,  Sehat Sutardja

    发明人： Runsheng He ,  Sehat Sutardja

    IPC分类号： G06F1/26

    CPC分类号： G05F5/00 ,  H02M2001/0019

    摘要： A power supply supplies an output current to an integrated circuit having at least one circuit block. The at least one circuit block has an operating mode controllable in response to an enable signal or a clock signal. The integrated circuit receives a load current to power the circuit block as a function of the operating mode of the circuit block. The load current is a portion of the output current. A receiver receives a weighted signal. The weighted signal is a function of the enable signal and the clock signal to indicate an expected load current of the integrated circuit. A controller controls the output current of the power supply as a function of the expected load current of the integrated circuit such that the power supply pre-emptively changes the output current.

    摘要翻译： 电源向具有至少一个电路块的集成电路提供输出电流。 所述至少一个电路块具有响应于使能信号或时钟信号而可控的操作模式。 集成电路接收负载电流以根据电路块的操作模式为电路块供电。 负载电流是输出电流的一部分。 接收机接收加权信号。 加权信号是使能信号和时钟信号的函数，以指示集成电路的预期负载电流。 控制器根据集成电路的预期负载电流来控制电源的输出电流，使得电源预先改变输出电流。

    Transmitter digital-to-analog converter with noise shaping
    35.
    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：US07471225B1

    公开(公告)日：2008-12-30

    申请号：US11636283

    申请日：2006-12-08

    申请人： Runsheng He ,  Haoli Qian

    发明人： Runsheng He ,  Haoli Qian

    IPC分类号： H03M3/00

    CPC分类号： H03M7/3031 ,  H03M7/3026 ,  H03M7/3042

    摘要： A noise shaping module comprises a first addition module that receives an input signal. A modulo operation module generates a modulo signal based on an output of the addition module. A truncation module truncates the modulo output to form a truncated signal. A feedback filter module generates a feedback signal that is an input to the first addition module based on the truncated signal.

    摘要翻译： 噪声整形模块包括接收输入信号的第一加法模块。 模运算模块基于加法模块的输出产生模信号。 截断模块截断模数输出以形成截断的信号。 反馈滤波器模块基于截断信号产生作为第一加法模块的输入的反馈信号。

    Pre-emptive power supply control system and method
    36.
    发明申请
    Pre-emptive power supply control system and method 有权
    先发电源控制系统及方法

    公开(公告)号：US20080209240A1

    公开(公告)日：2008-08-28

    申请号：US12150570

    申请日：2008-04-29

    申请人： Runsheng He ,  Sehat Sutardja

    发明人： Runsheng He ,  Sehat Sutardja

    IPC分类号： G06F1/26

    CPC分类号： G05F5/00 ,  H02M2001/0019

    摘要： A control system for controlling a power supply having an operating function. The power supply to supply an output current to an integrated circuit having at least one circuit block that is controllable by an enable signal or a clock signal. A receiver to receive the enable signal. A controller to determine a loading status of the at least one circuit block as a function of the enable signal or the clock signal and to control the output current of the power supply as a function of the loading status of the at least one circuit block such that the power supply preemptively changes the output current.

    摘要翻译： 一种用于控制具有操作功能的电源的控制系统。 向具有至少一个可由使能信号或时钟信号控制的电路块的集成电路提供输出电流的电源。 用于接收使能信号的接收器。 一种控制器，用于根据使能信号或时钟信号确定至少一个电路块的负载状态，并根据至少一个电路块的负载状态来控制电源的输出电流，如 电源可以预先改变输出电流。

    A/D converter for wideband digital communication
    38.
    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：US07408492B2

    公开(公告)日：2008-08-05

    申请号：US11602676

    申请日：2006-11-20

    申请人： Xiang Guang Feng ,  Runsheng He

    发明人： Xiang Guang Feng ,  Runsheng He

    IPC分类号： H03M3/00

    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。

    Method and system to improve decision-driven control loops
    39.
    发明授权
    Method and system to improve decision-driven control loops 有权
    改进决策驱动控制回路的方法和系统

    公开(公告)号：US07372924B1

    公开(公告)日：2008-05-13

    申请号：US10797254

    申请日：2004-03-10

    申请人： Mats Oberg ,  Runsheng He ,  Michael Madden

    发明人： Mats Oberg ,  Runsheng He ,  Michael Madden

    IPC分类号： H04L27/08

    CPC分类号： H03G3/3036 ,  G11B20/10009

    摘要： A decision-driven control loop wherein a first reconstructed signal is compared to an unreconstructed data symbol signal to initially drive the control loop. A second reconstructed signal that is based on a longer memory path than the first reconstructed signal is evaluated against the first reconstructed signal. The decision-driven control loop is ultimately controlled based on the results of the evaluation between the first and second reconstructed signals. The inventive decision-driven control loop, which may be implemented in software, may form part of a read channel in a storage device.

    摘要翻译： 决策驱动控制回路，其中将第一重建信号与未构建的数据符号信号进行比较，以初始驱动控制回路。 基于比第一重建信号更长的存储器路径的第二重构信号针对第一重建信号进行评估。 基于第一和第二重建信号之间的评估结果，最终控制决策驱动控制回路。 可以以软件实现的本发明的决策驱动控制回路可以形成存储设备中的读通道的一部分。