Phase-adjusted pre-emphasis and equalization for data communication
    1.
    发明授权
    Phase-adjusted pre-emphasis and equalization for data communication 有权
    相位调整的预加重和数据通信的均衡

    公开(公告)号:US07848402B1

    公开(公告)日:2010-12-07

    申请号:US11239703

    申请日:2005-09-29

    IPC分类号: H03H7/30 H03H7/40 H03K5/159

    摘要: Methods and circuits are provided for producing phase-adjusted pre-emphasis and equalization. In applications in which little or no phase distortion occurs during signal transmission, propagation, or reception, linear-phase pre-emphasis or equalization can be used to reduce or eliminate phase distortion introduced by the pre-emphasis or equalization. Linear phase, constant group delay FIR filters or circuits may have odd numbers of coefficients symmetrical about the middle coefficient. In applications in which signal phase distortion occurs, linear phase or non-linear phase pre-emphasis or equalization can be used to reduce or compensate for the phase distortion. Phase compensation may be effected using FIR pre-emphasis and equalization filters and circuits. Non-linear phase FIR filters may have different numbers and combinations of coefficients.

    摘要翻译: 提供了用于产生相位调整预加重和均衡的方法和电路。 在信号传输,传播或接收期间发生很少或没有相位失真的应用中,可以使用线性相位预加重或均衡来减少或消除由预加重或均衡引入的相位失真。 线性相位,常数组延迟FIR滤波器或电路可能具有关于中间系数对称的奇数系数。 在发生信号相位失真的应用中,可以使用线性相位或非线性相位预加重或均衡来减少或补偿相位失真。 可以使用FIR预加重和均衡滤波器和电路实现相位补偿。 非线性相位FIR滤波器可以具有不同的数字和系数的组合。

    Dual-mode LVDS/CML transmitter methods and apparatus
    2.
    发明授权
    Dual-mode LVDS/CML transmitter methods and apparatus 有权
    双模LVDS / CML发射机的方法和装置

    公开(公告)号:US07598779B1

    公开(公告)日:2009-10-06

    申请号:US10962137

    申请日:2004-10-08

    IPC分类号: H03K3/00

    摘要: A dual-mode LVDS/CML transmitter allows a single circuit to operate as either an LVDS transmitter or a CML transmitter. The transmitter mode can be switched by activating or deactivating appropriate circuit elements, and changing the voltage or current produced by appropriate sources or sinks. This flexibility allows a single transmitter to operate well in both AC and DC coupling conditions, and facilitates interoperation with a greater variety of receivers.

    摘要翻译: 双模LVDS / CML发射器允许单个电路作为LVDS发射器或CML发射器工作。 可以通过激活或禁用适当的电路元件以及改变由适当的源或汇产生的电压或电流来切换发射器模式。 这种灵活性允许单个发射机在AC和DC耦合条件下运行良好,并且便于与更多种类的接收器的互操作。

    Systems and methods for simulating link performance
    3.
    发明授权
    Systems and methods for simulating link performance 失效
    用于模拟链路性能的系统和方法

    公开(公告)号:US07693691B1

    公开(公告)日:2010-04-06

    申请号:US11524012

    申请日:2006-09-19

    IPC分类号: G06F17/50 H04B1/04

    CPC分类号: G06F17/5009

    摘要: Systems and methods for accurately and quickly simulating link performance of a transceiver operating with any given transmission medium are provided. Accurate and quick link simulations may be provided using a link simulation platform. The link simulation platform may simulate link performance using transceiver behavioral models (e.g., transmitter and receiver behavioral models) that incorporate silicon level parameters, which parameters enable the behavioral models to substantially emulate the actual behavior of the transceiver portions of the link.

    摘要翻译: 提供了用于准确和快速地模拟使用任何给定传输介质工作的收发器的链路性能的系统和方法。 可以使用链路仿真平台提供准确和快速的链路模拟。 链路仿真平台可以使用包含硅级参数的收发机行为模型(例如,发射机和接收机行为模型)来模拟链路性能,这些参数使得行为模型能够基本上模拟链路的收发器部分的实际行为。