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    Solid catalyst component for polymerization of ethylene, preparation thereof and a catalyst containing the same
    2.
    发明授权
    Solid catalyst component for polymerization of ethylene, preparation thereof and a catalyst containing the same 有权
    用于乙烯聚合的固体催化剂组分，其制备方法和含有它的催化剂

    公开(公告)号：US07091289B2

    公开(公告)日：2006-08-15

    申请号：US10455256

    申请日：2003-06-05

    Applicant: Zhiwu Wang ,  Zhong Tan ,  Tianyi Li ,  Xingbo Li ,  Kai Zhang ,  Peng Kou ,  Haixiang Cui ,  Zhengyang Guo ,  Liang Pan

    Inventor： Zhiwu Wang ,  Zhong Tan ,  Tianyi Li ,  Xingbo Li ,  Kai Zhang ,  Peng Kou ,  Haixiang Cui ,  Zhengyang Guo ,  Liang Pan

    IPC: C08F4/646 ,  C08F4/654 ,  C08F4/642

    CPC classification number: C08F210/16 ,  C08F110/02 ,  C08F10/00 ,  C08F4/651 ,  C08F4/6557 ,  C08F4/6543 ,  C08F210/08 ,  C08F2500/12 ,  C08F2500/18 ,  C08F2500/24

    Abstract: The present invention provides a catalyst component used for homopolymerization or co-polymerization of ethylene, comprising at least one suitable electron donor compound supported on a composition containing magnesium and titanium, wherein the electron donor compound is selected from the group consisting of aliphatic ethers, alicyclic ethers, aromatic ethers, aliphatic ketones and alicyclic ketones, and wherein the composition containing magnesium and titanium is prepared by dissolving a magnesium compound into a solvent system to form a homogeneous solution and then contacting the solution with a titanium compound in the presence of a precipitation aid to precipitate the composition. The present invention also relates to a method for the preparation of said catalyst component and a catalyst comprising thereof, and to use of the catalyst in homopolymerization of ethylene or co-polymerization of ethylene with at least one C3–C8 α-olefin.

    Abstract translation: 本发明提供了用于乙烯均聚或共聚的催化剂组分，其包含负载在含有镁和钛的组合物上的至少一种合适的电子给体化合物，其中电子给体化合物选自脂族醚，脂环族 醚类，芳香族醚类，脂族酮类和脂环族酮类，其中含镁和钛的组合物是通过将镁化合物溶解在溶剂体系中以形成均匀溶液制备的，然后在沉淀存在下使该溶液与钛化合物接触 有助于沉淀组合物。 本发明还涉及一种制备所述催化剂组分的方法及其包含的催化剂，并且使用该催化剂将乙烯均聚或乙烯与至少一种C 3〜 -C 8α-烯烃。

    Method and device for eliminating echoes
    3.
    发明授权
    Method and device for eliminating echoes 有权
    消除回波的方法和装置

    公开(公告)号：US09443528B2

    公开(公告)日：2016-09-13

    申请号：US14400289

    申请日：2012-06-15

    Applicant: Xingbo Li ,  Faguo Xu ,  Ting Liu ,  Qing Ma ,  Xiaoliang Li

    Inventor： Xingbo Li ,  Faguo Xu ,  Ting Liu ,  Qing Ma ,  Xiaoliang Li

    IPC: H04B3/20 ,  G10L21/02 ,  H04B3/23 ,  G10K11/16 ,  H04M9/08

    CPC classification number: G10L21/02 ,  G10K11/16 ,  H04B3/23 ,  H04M9/082

    Abstract: Provided are a method and device for eliminating echo. The method comprises: an echo path characteristic parameter of an echo signal is estimated; a source signal of the echo signal is taken as a reference signal, and an echo estimation signal is generated according to the echo path characteristic parameter; and the echo estimation signal is subtracted from a speech signal to be processed. The disclosure solves the problem in the related art that self-adaptation cannot be achieved when a returned near-end audio is suppressed, thus facilitating the enhancement of the speech quality of a conference and the improvement of user experience.

    Abstract translation: 提供了一种消除回波的方法和装置。 该方法包括：估计回波信号的回波路径特性参数; 将回波信号的源信号作为参考信号，根据回波路径特性参数生成回波估计信号; 并从要处理的语音信号中减去回波估计信号。 本公开解决了相关技术中的问题，当返回的近端音频被抑制时不能实现自适应，从而有助于提高会议的语音质量和改善用户体验。

    METHOD AND DEVICE FOR ELININATING ECHOES
    4.
    发明申请
    METHOD AND DEVICE FOR ELININATING ECHOES 有权
    用于消除电子邮件的方法和装置

    公开(公告)号：US20150124986A1

    公开(公告)日：2015-05-07

    申请号：US14400289

    申请日：2012-06-15

    Applicant: Xingbo Li ,  Faguo Xu ,  Ting Liu ,  Qing Ma ,  Xiaoliang Li

    Inventor： Xingbo Li ,  Faguo Xu ,  Ting Liu ,  Qing Ma ,  Xiaoliang Li

    IPC: G10L21/02 ,  G10K11/16

    CPC classification number: G10L21/02 ,  G10K11/16 ,  H04B3/23 ,  H04M9/082

    Abstract: Provided are a method and device for eliminating echo. The method comprises: an echo path characteristic parameter of an echo signal is estimated; a source signal of the echo signal is taken as a reference signal, and an echo estimation signal is generated according to the echo path characteristic parameter; and the echo estimation signal is subtracted from a speech signal to be processed. The disclosure solves the problem in the related art that self-adaptation cannot be achieved when a returned near-end audio is suppressed, thus facilitating the enhancement of the speech quality of a conference and the improvement of user experience.

    Abstract translation: 提供了一种消除回波的方法和装置。 该方法包括：估计回波信号的回波路径特性参数; 将回波信号的源信号作为参考信号，根据回波路径特性参数生成回波估计信号; 并从要处理的语音信号中减去回波估计信号。 本公开解决了相关技术中的问题，当返回的近端音频被抑制时不能实现自适应，从而有助于提高会议的语音质量和改善用户体验。

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