利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

144 条记录 (耗时 0.019 秒)

    Automatic gain control with three states of operation
    2.
    发明授权
    Automatic gain control with three states of operation 失效
    具有三种运行状态的自动增益控制

    公开(公告)号：US07385449B2

    公开(公告)日：2008-06-10

    申请号：US11729587

    申请日：2007-03-29

    申请人： Namik Kemal Kocaman ,  Afshin Momtaz

    发明人： Namik Kemal Kocaman ,  Afshin Momtaz

    IPC分类号： H03G3/10

    CPC分类号： H03F3/45973 ,  H03F2200/435 ,  H03F2200/78 ,  H03G3/001 ,  H03G3/30

    摘要： A method and apparatus for an automatic gain control circuit (AGC) that utilizes freezing and unfreezing states. A freezing process moves the AGC into a TRANSITION state from a NORMAL state, based on net change of VGA gain control codes over a monitoring time window. The freezing process then moves the AGC into a FROZEN state from the TRANSITION state, based on net change of VGA gain control codes over the monitoring time window. An unfreezing process moves the AGC into the NORMAL state from the FROZEN state, based on signal amplitude changes at the output of the VGA or other parameters of the VGA.

    摘要翻译： 一种利用冷冻和解​​冻状态的自动增益控制电路（AGC）的方法和装置。 基于监视时间窗口的VGA增益控制代码的净变化，冻结过程将AGC从NORMAL状态移动到TRANSITION状态。 基于监视时间窗口的VGA增益控制代码的净变化，冷冻过程然后将AGC从TRANSITION状态移动到FROZEN状态。 基于VGA输出端的VGA信号幅度变化或VGA的其他参数，解冻过程会将AGC从FROZEN状态移动到NORMAL状态。

    Digitally controlled threshold adjustment circuit
    3.
    发明授权
    Digitally controlled threshold adjustment circuit 有权
    数字控制阈值调节电路

    公开(公告)号：US07215171B2

    公开(公告)日：2007-05-08

    申请号：US11117767

    申请日：2005-04-28

    申请人： Namik Kemal Kocaman ,  Afshin Momtaz

    发明人： Namik Kemal Kocaman ,  Afshin Momtaz

    IPC分类号： H03L5/00

    CPC分类号： H03K5/151 ,  H03K5/003 ,  H03K5/086

    摘要： A threshold adjustment circuit including: a current DAC for supplying or sinking a varying current; a differential pair of thin oxide transistors coupled to the DAC and coupled together at a common source node; a power supply for providing a supply voltage having a voltage level above reliability of the thin oxide transistors; and a third transistor for maintaining voltage of the common source node above a predetermined level and to disable the threshold adjustment circuit. The bulk and source of each of the differential pair thin oxide transistors is coupled to the common source node and each of the differential pair thin oxide transistors is switched by a signal to keep each of the differential pair thin oxide transistors in saturation region.

    摘要翻译： 一种阈值调整电路，包括：用于提供或吸收变化电流的电流DAC; 耦合到DAC并在公共源节点处耦合在一起的薄氧化物晶体管的差分对; 用于提供具有高于薄氧化物晶体管的可靠性的电压电平的电源电压的电源; 以及第三晶体管，用于将公共源节点的电压维持在预定电平以上并禁止阈值调整电路。 每个差分对薄氧化物晶体管的体积和源极耦合到公共源节点，并且每个差分对薄氧化物晶体管被信号切换，以将每个差分对薄氧化物晶体管保持在饱和区域。

    Digitally controlled threshold adjustment circuit
    6.
    发明授权
    Digitally controlled threshold adjustment circuit 失效
    数字控制阈值调节电路

    公开(公告)号：US07501873B2

    公开(公告)日：2009-03-10

    申请号：US11731713

    申请日：2007-03-30

    申请人： Namik Kemal Kocaman ,  Afshin Momtaz

    发明人： Namik Kemal Kocaman ,  Afshin Momtaz

    IPC分类号： H03L5/00

    CPC分类号： H03K5/151 ,  H03K5/003 ,  H03K5/086

    摘要： Embodiments of threshold adjustment circuits are disclosed. An example circuit includes a first differential pair of first and second thin oxide transistors. The first and second thin oxide transistors decrease a DC voltage component of a first and/or second component of an input signal of the circuit. The example circuit further includes a second differential pair of third and fourth thin oxide transistors. The second and third thin oxide transistors increase a DC voltage component of the first and/or the second component of the input signal. The example circuit also includes a power supply that provides a supply voltage to the circuit, the power supply having a voltage level above a reliability level of the thin oxide transistors. In the example circuit, each of the differential pair thin oxide transistors is switched by a signal that keeps each of the first, second, third, and fourth thin oxide transistors operating in saturation.

    摘要翻译： 公开了阈值调整电路的实施例。 示例电路包括第一和第二薄氧化物晶体管的第一差分对。 第一和第二薄氧化物晶体管降低电路的输入信号的第一和/或第二分量的DC电压分量。 示例电路还包括第三和第四薄氧化物晶体管的第二差分对。 第二和第三薄氧化物晶体管增加输入信号的第一和/或第二分量的直流电压分量。 示例电路还包括向电路提供电源电压的电源，电源具有高于薄氧化物晶体管的可靠性水平的电压电平。 在示例电路中，通过使第一，第二，第三和第四薄氧化物晶体管中的每一个饱和的信号切换差分对薄氧化物晶体管中的每一个。

    Adaptive offset adjustment algorithm
    8.
    发明申请
    Adaptive offset adjustment algorithm 失效
    自适应偏移调整算法

    公开(公告)号：US20100135442A1

    公开(公告)日：2010-06-03

    申请号：US12314051

    申请日：2008-12-03

    申请人： Namik Kemal Kocaman ,  Afshin Momtaz ,  Velu Chellam Pillai ,  Vivek Telang ,  Sundararajan Chidambara ,  Magesh Valliappan

    发明人： Namik Kemal Kocaman ,  Afshin Momtaz ,  Velu Chellam Pillai ,  Vivek Telang ,  Sundararajan Chidambara ,  Magesh Valliappan

    IPC分类号： H04L27/06

    CPC分类号： H04B17/21 ,  H03F3/195 ,  H03F2200/375 ,  H03F2200/405 ,  H04L25/03019 ,  H04L27/08

    摘要： An apparatus and method is disclosed to compensate for one or more offsets in a communications signal. A communications receiver may carry out an offset adjustment algorithm to compensate for the one or more offsets. An initial search procedure determines one or more signal metric maps for one or more selected offset adjustment corrections from the one or more offset adjustment corrections. The offset adjustment algorithm determines one or more optimal points for one or more selected offset adjustment correction based upon the one or more signal maps. The adaptive offset algorithm adjusts each of the one or more selected offset adjustment corrections to their respective optimal points and/or each of one or more non-selected offset adjustment corrections to a corresponding one of a plurality of possible offset corrections to provide one or more adjusted offset adjustment corrections. A tracking mode procedure optimizes the one or more adjusted offset adjustment corrections.

    摘要翻译： 公开了一种用于补偿通信信号中的一个或多个偏移的装置和方法。 通信接收机可以执行偏移调整算法来补偿一个或多个偏移。 初始搜索过程从一个或多个偏移调整校正确定一个或多个所选偏移调整校正的一个或多个信号量度图。 偏移调整算法基于一个或多个信号映射确定一个或多个所选偏移调整校正的一个或多个最优点。 自适应偏移算法将一个或多个所选择的偏移调整校正中的每一个调整到它们各自的最佳点和/或一个或多个未选择的偏移调整校正中的每一个到多个可能的偏移校正中的对应的一个，以提供一个或多个 调整后的偏移调整校正。 跟踪模式过程优化一个或多个经调整的偏移调整校正。

    Automatic gain control using multi-comparators
    9.
    发明授权
    Automatic gain control using multi-comparators 失效
    使用多比较器进行自动增益控制

    公开(公告)号：US07456690B2

    公开(公告)日：2008-11-25

    申请号：US11135208

    申请日：2005-05-23

    申请人： Namik Kemal Kocaman ,  Afshin Momtaz

    发明人： Namik Kemal Kocaman ,  Afshin Momtaz

    IPC分类号： H03G3/10

    CPC分类号： H03G3/3052 ,  H03G3/001 ,  H03G3/3036

    摘要： A method and apparatus for an automatic gain control (AGC) loop that utilizes multiple comparators to provide constant bandwidth tracking and step response, as well as fine granularity for decision directed convergence. In one embodiment, an odd number of comparators is used with square-law scaling at the output to achieve constant bandwidth step response for a wide range of input amplitude changes.

    摘要翻译： 一种用于自动增益控制（AGC）回路的方法和装置，其利用多个比较器来提供恒定的带宽跟踪和阶跃响应，以及用于决策定向收敛的细粒度。 在一个实施例中，使用奇数比较器，在输出处使用平方律缩放来实现宽范围的输入幅度变化的恒定带宽阶跃响应。