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    Signal detection techniques using clock data recovery
    1.
    发明授权
    Signal detection techniques using clock data recovery 有权

    公开(公告)号：US10797855B2

    公开(公告)日：2020-10-06

    申请号：US16036227

    申请日：2018-07-16

    Applicant: INTEL CORPORATION

    Inventor： Amir Laufer ,  Itamar Levin ,  Kevan A. Lillie

    IPC: H04L7/04 ,  H03L7/08 ,  H03L7/091 ,  H04L7/00 ,  H04L7/033

    Abstract: Techniques and apparatus for detection of a signal at an I/O interface module are described. In one embodiment, for example, an apparatus to provide signal detection may include at least one receiver, at least one memory, and logic for a signal detection module, at least a portion of the logic comprised in hardware coupled to the at least one memory and the at least one receiver, the logic to access a plurality of pulse signals of a clock and data recovery (CDR) circuit, analyze at least one pulse characteristic of the plurality of pulse signals, and generate a signal determination to indicate a signal at the at least one receiver based on the at least one pulse characteristic. Other embodiments are described and claimed.

    Signal detection techniques using clock data recovery
    4.
    发明授权
    Signal detection techniques using clock data recovery 有权

    公开(公告)号：US10027470B1

    公开(公告)日：2018-07-17

    申请号：US15393186

    申请日：2016-12-28

    Applicant: INTEL CORPORATION

    Inventor： Amir Laufer ,  Itamar Levin ,  Kevan A. Lillie

    IPC: H04L7/04 ,  H04L7/00 ,  H03L7/08

    Abstract: Techniques and apparatus for detection of a signal at an I/O interface module are described. In one embodiment, for example, an apparatus to provide signal detection may include at least one receiver, at least one memory, and logic for a signal detection module, at least a portion of the logic comprised in hardware coupled to the at least one memory and the at least one receiver, the logic to access a plurality of pulse signals of a clock and data recovery (CDR) circuit, analyze at least one pulse characteristic of the plurality of pulse signals, and generate a signal determination to indicate a signal at the at least one receiver based on the at least one pulse characteristic. Other embodiments are described and claimed.

    Eye width measurement and margining in communication systems
    7.
    发明授权
    Eye width measurement and margining in communication systems 有权
    通信系统的眼宽测量和边缘

    公开(公告)号：US09215061B2

    公开(公告)日：2015-12-15

    申请号：US14667146

    申请日：2015-03-24

    Applicant: Intel Corporation

    Inventor： Dima Hammad ,  Vadim Levin ,  Amir Laufer ,  Ron Bar-Lev ,  Noam Familia ,  Itamar Levin

    IPC: H04L7/00 ,  H04L1/00 ,  H03L7/08 ,  H03L7/093 ,  H03L7/107

    CPC classification number: H04L7/0054 ,  H03L7/0807 ,  H03L7/093 ,  H03L7/1075 ,  H04L1/00 ,  H04L1/203 ,  H04L1/24 ,  H04L7/0016 ,  H04L7/0062 ,  H04L7/0079

    Abstract: Generally, this disclosure describes eye width measurement and margining in communication systems. An apparatus may be configured to: decouple a phase detector from a CDR loop filter of a receiver under test in response to synchronizing a margining clock signal to a receiver clock signal; apply a margining input to the loop filter, the margining input configured to shift a frequency of the margining clock signal by a constant amount related to the margining input; compare a first bit stream and a second bit stream and configured to detect an error, the first bit stream related to a transmitted bit stream; and count cycles of the receiver clock signal or the margining clock signal, wherein an eye width associated with the receiver under test is related to the margining input, the frequency of the receiver clock signal and a count of clock cycles when the error is detected.

    Abstract translation: 通常，本公开描述了通信系统中的眼宽测量和边缘化。 一种装置可以被配置为：响应于将边缘化时钟信号同步到接收机时钟信号，将相位检测器与被测接收机的CDR环路滤波器分离; 对环路滤波器施加裕度输入，边缘输入被配置为将边缘化时钟信号的频率移动与边界输入相关的恒定量; 比较第一比特流和第二比特流，并配置为检测与发送的比特流相关的第一比特流的错误; 以及接收机时钟信号或边缘时钟信号的计数周期，其中与被测接收机相关联的眼睛宽度与边缘输入，接收机时钟信号的频率以及当检测到错误时的时钟周期的计数有关。

    Delay resilient decision feedback equalizer
    8.
    发明授权
    Delay resilient decision feedback equalizer 有权

    公开(公告)号：US09680668B2

    公开(公告)日：2017-06-13

    申请号：US14572756

    申请日：2014-12-16

    Applicant: Intel Corporation

    Inventor： Amir Laufer ,  Itamar Levin

    IPC: H03K5/159 ,  H04L25/03

    CPC classification number: H04L25/03057 ,  H04L25/03885 ,  H04L2025/03579

    Abstract: Described is an apparatus which comprises a decision feedback equalizer (DFE) having a first DFE tap path and non-first DFE tap paths, wherein the DFE includes a variable delay circuit in a signal path of the non-first DFE tap paths. In some embodiment, an apparatus is provided which comprises: a summer; a slicer to receive input from the summer; a first feedback loop to cancel a first post-cursor, the first feedback loop forming a loop by coupling the slicer to the summer; and a second feedback loop to cancel a second post-cursor, the second feedback loop forming a loop by coupling an input of the first feedback loop to the summer, wherein the second feedback loop having a programmable delay at its input.

    DELAY RESILIENT DECISION FEEDBACK EQUALIZER
    10.
    发明申请
    DELAY RESILIENT DECISION FEEDBACK EQUALIZER 有权
    延迟回馈决策反馈平均

    公开(公告)号：US20160173300A1

    公开(公告)日：2016-06-16

    申请号：US14572756

    申请日：2014-12-16

    Applicant: Intel Corporation

    Inventor： Amir Laufer ,  Itamar Levin

    IPC: H04L25/03

    CPC classification number: H04L25/03057 ,  H04L25/03885 ,  H04L2025/03579

    Abstract: Described is an apparatus which comprises a decision feedback equalizer (DFE) having a first DFE tap path and non-first DFE tap paths, wherein the DFE includes a variable delay circuit in a signal path of the non-first DFE tap paths. In some embodiment, an apparatus is provided which comprises: a summer; a slicer to receive input from the summer; a first feedback loop to cancel a first post-cursor, the first feedback loop forming a loop by coupling the slicer to the summer; and a second feedback loop to cancel a second post-cursor, the second feedback loop forming a loop by coupling an input of the first feedback loop to the summer, wherein the second feedback loop having a programmable delay at its input.

    Abstract translation: 描述了一种装置，其包括具有第一DFE抽头路径和非第一DFE抽头路径的判决反馈均衡器（DFE），其中DFE在非第一DFE抽头路径的信号路径中包括可变延迟电路。 在一些实施例中，提供一种装置，包括：一个夏天; 从夏天接收输入的切片机; 第一反馈回路，用于取消第一后视标，所述第一反馈回路通过将所述切片机耦合到所述夏季而形成回路; 以及用于消除第二后置光标的第二反馈回路，所述第二反馈回路通过将所述第一反馈回路的输入耦合到所述加法器来形成回路，其中所述第二反馈回路在其输入处具有可编程延迟。

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