公开(公告)号：US20080232482A1

公开(公告)日：2008-09-25

申请号：US11687698

申请日：2007-03-19

Applicant: Qin Liu

Inventor： Qin Liu

IPC: H04K1/10 ,  H04L27/28

CPC classification number: H04L27/2607 ,  H04L27/2647 ,  H04L2025/03477

Abstract: In an orthogonal frequency division multiplex (OFDM) communication system, a method at a receiver end is provided. The method comprises the steps of: providing a frame; providing a guard interval (GI) associated with the frame, the GI having a length in a time domain larger or longer than a channel span; and extracting OFDM information comprising a first OFDM information starting from a first point after the channel span to a first end point within the frame.

Abstract translation: 在正交频分复用（OFDM）通信系统中，提供了接收机端的方法。 该方法包括以下步骤：提供帧; 提供与所述帧相关联的保护间隔（GI），所述GI在时域中的长度大于或长于信道跨度; 以及提取包括从所述信道跨越之后的第一点开始到所述帧内的第一终点的第一OFDM信息的OFDM信息。

公开(公告)号：US20080232236A1

公开(公告)日：2008-09-25

申请号：US11687684

申请日：2007-03-19

Applicant: Qin Liu

Inventor： Qin Liu

IPC: H04J11/00

CPC classification number: H04L25/0228

Abstract: In an OFDM system having guard intervals interposed between symbols or frames, and having pilot signals distributed within the symbols or frames, a method for channel estimation is provided. The method comprising the steps of: in the time domain, performing an operation to obtain only a set of received pilots; and sectionalizing or subdividing the set of received pilots into a plurality of sub-sections; whereby a refined channel estimation is obtained on a sub-sectional basis.

Abstract translation: 在具有插入在符号或帧之间并具有分配在符号或帧内的导频信号的保护间隔的OFDM系统中，提供了一种用于信道估计的方法。 该方法包括以下步骤：在时域中，执行仅获得一组接收到的导频的操作; 以及将所述一组接收到的导频分割或细分成多个子部分; 从而在分段的基础上获得精细的信道估计。

公开(公告)号：US07382512B2

公开(公告)日：2008-06-03

申请号：US11259609

申请日：2005-10-26

Applicant: Zhizhang Chen ,  Qin Liu ,  Timothy F. Myers ,  Chien-Hua Chen

Inventor： Zhizhang Chen ,  Qin Liu ,  Timothy F. Myers ,  Chien-Hua Chen

IPC: G02F1/01 ,  G02F1/03 ,  G02F1/1333 ,  G02F1/1335

CPC classification number: G02F1/135 ,  G02F1/1334 ,  G02F1/1354

Abstract: Various devices and methods employing a resistive phase change material are disclosed.

Abstract translation: 公开了采用电阻相变材料的各种装置和方法。

公开(公告)号：US20080043166A1

公开(公告)日：2008-02-21

申请号：US11495213

申请日：2006-07-28

Applicant: Qin Liu ,  Bradley D. Chung ,  John C. Rudin ,  Frank E. Glass

Inventor： Qin Liu ,  Bradley D. Chung ,  John C. Rudin ,  Frank E. Glass

IPC: G02F1/1333

CPC classification number: G02F1/133371 ,  G02F1/133345 ,  G02F2202/022 ,  Y10T428/31515

Abstract: Various methods and apparatus relating to a multi-level layer are disclosed.

Abstract translation: 公开了与多层相关的各种方法和装置。

公开(公告)号：US07148621B2

公开(公告)日：2006-12-12

申请号：US10825754

申请日：2004-04-16

Applicant: Zhizhang Chen ,  Ronald L. Enck ,  Sriram Ramamoorthi ,  Qin Liu

Inventor： Zhizhang Chen ,  Ronald L. Enck ,  Sriram Ramamoorthi ,  Qin Liu

IPC: H01J1/62 ,  H01J63/04

CPC classification number: H01J3/02 ,  B82Y10/00 ,  H01J1/30 ,  H01J1/312 ,  H01J3/021 ,  H01J9/022 ,  H01J2237/1205

Abstract: A method for creating an electron lens includes the steps of applying a polymer layer on an emitter surface of an electron emitter and then curing the polymer layer to reduce volatile content.

公开(公告)号：US07102350B2

公开(公告)日：2006-09-05

申请号：US10710278

申请日：2004-06-30

Applicant: Daniel J. Weyers ,  Qin Liu

Inventor： Daniel J. Weyers ,  Qin Liu

IPC: G01V3/00

CPC classification number: G01R33/34046 ,  G01R33/422

Abstract: An apparatus for MRI having an RF birdcage coil and an RF shield is disclosed. The RF birdcage coil includes a coil axis, an end ring portion disposed about the axis, and a plurality of legs disposed parallel to the axis and in signal communication with the end ring portion. The RF shield is disposed about the coil and is in signal communication therewith. The shield includes a cylindrical conductive sheet having first and second ends, and a plurality of sets of discontinuous slots disposed about the cylindrical sheet and running between the first and second ends, wherein a region of discontinuity within a set of the slots is aligned with the end ring portion.

Abstract translation: 公开了一种具有射频鸟笼线圈和射频屏蔽的MRI装置。 RF鸟笼线圈包括线圈轴线，围绕轴线设置的端环部分和平行于轴线设置并与端环部分信号连通的多个腿部。 RF屏蔽围绕线圈设置并与其进行信号通信。 屏蔽包括具有第一和第二端的圆柱形导电片和围绕圆柱形片设置并在第一和第二端之间延伸的多组不连续槽，其中一组槽内的不连续区域与 端环部分。

公开(公告)号：US20060001425A1

公开(公告)日：2006-01-05

申请号：US10710278

申请日：2004-06-30

Applicant: Daniel Weyers ,  Qin Liu

Inventor： Daniel Weyers ,  Qin Liu

IPC: G01V3/00

CPC classification number: G01R33/34046 ,  G01R33/422

Abstract: An apparatus for MRI having an RF birdcage coil and an RF shield is disclosed. The RF birdcage coil includes a coil axis, an end ring portion disposed about the axis, and a plurality of legs disposed parallel to the axis and in signal communication with the end ring portion. The RF shield is disposed about the coil and is in signal communication therewith. The shield includes a cylindrical conductive sheet having first and second ends, and a plurality of sets of discontinuous slots disposed about the cylindrical sheet and running between the first and second ends, wherein a region of discontinuity within a set of the slots is aligned with the end ring portion.

Abstract translation: 公开了一种具有射频鸟笼线圈和射频屏蔽的MRI装置。 RF鸟笼线圈包括线圈轴线，围绕轴线设置的端环部分和平行于轴线设置并与端环部分信号连通的多个腿部。 RF屏蔽围绕线圈设置并与其进行信号通信。 屏蔽包括具有第一和第二端的圆柱形导电片和围绕圆柱形片设置并在第一和第二端之间延伸的多组不连续槽，其中一组槽内的不连续区域与 端环部分。

公开(公告)号：US20050228065A1

公开(公告)日：2005-10-13

申请号：US11146586

申请日：2005-06-07

Applicant: Paul Nicolson ,  Richard Baron ,  Peter Chabrecek ,  John Court ,  Angelika Domschke ,  Hans Griesser ,  Arthur Ho ,  Jens Hopken ,  Bronwyn Laycock ,  Qin Liu ,  Dieter Lohmann ,  Gordon Meijs ,  Eric Papaspiliotopoulos ,  Judy Smith Riffle ,  Klaus Schindhelm ,  Deborah Sweeney ,  Wilson Terry ,  Jurgen Vogt ,  Lynn Winterton

Inventor： Paul Nicolson ,  Richard Baron ,  Peter Chabrecek ,  John Court ,  Angelika Domschke ,  Hans Griesser ,  Arthur Ho ,  Jens Hopken ,  Bronwyn Laycock ,  Qin Liu ,  Dieter Lohmann ,  Gordon Meijs ,  Eric Papaspiliotopoulos ,  Judy Smith Riffle ,  Klaus Schindhelm ,  Deborah Sweeney ,  Wilson Terry ,  Jurgen Vogt ,  Lynn Winterton

IPC: A61L27/26 ,  B29C39/42 ,  B29C71/00 ,  C08G18/10 ,  C08G18/48 ,  C08G18/50 ,  C08G18/61 ,  C08G18/67 ,  C08G18/81 ,  C08K3/00 ,  C08L43/04 ,  C08L75/04 ,  G02B1/04

CPC classification number: G02B1/043 ,  A61L27/26 ,  B29C39/42 ,  B29C71/00 ,  B29L2011/0041 ,  C08G18/10 ,  C08G18/4833 ,  C08G18/5015 ,  C08G18/61 ,  C08G18/672 ,  C08G18/8116 ,  C08G18/8175 ,  C08L43/04 ,  C08L75/04 ,  C08L51/085 ,  C08L2666/20 ,  C08L51/08 ,  C08L83/04 ,  C08L33/00 ,  C08G18/63 ,  C08G18/48

Abstract: An ophthalmic lens suited for extended-wear periods of at least one day on the eye without a clinically significant amount of corneal swelling and without substantial wearer discomfort. The lens has a balance of oxygen permeability and ion or water permeability, with the ion or water permeability being sufficient to provide good on-eye movement, such that a good tear exchange occurs between the lens and the eye. A preferred lens is a copolymerization product of a oxyperm macromer and an ionoperm monomer. The invention encompasses extended wear contact lenses, which include a core having oxygen transmission and ion transmission pathways extending from the inner surface to the outer surface.

公开(公告)号：US06758711B2

公开(公告)日：2004-07-06

申请号：US09881981

申请日：2001-06-14

Applicant: Zhizhang Chen ,  Ronald L. Enck ,  Sriram Ramamoorthi ,  Qin Liu

Inventor： Zhizhang Chen ,  Ronald L. Enck ,  Sriram Ramamoorthi ,  Qin Liu

IPC: H01J900

CPC classification number: H01J3/02 ,  B82Y10/00 ,  H01J1/30 ,  H01J1/312 ,  H01J3/021 ,  H01J9/022 ,  H01J2237/1205

Abstract: A method for creating an electron lens includes the steps of applying a polymer layer on an emitter surface of an electron emitter and then curing the polymer layer to reduce volatile content.

公开(公告)号：US5965631A

公开(公告)日：1999-10-12

申请号：US108714

申请日：1998-07-01

Applicant: Paul Clement Nicolson ,  Richard Carlton Baron ,  Peter Chabrecek ,  John Court ,  Angelika Domschke ,  Hans Jorg Griesser ,  Arthur Ho ,  Jens Hopken ,  Bronwyn Glenice Laycock ,  Qin Liu ,  Dieter Lohmann ,  Gordon Francis Meijs ,  Eric Papaspiliotopoulos ,  Judy Smith Riffle ,  Klaus Schindhelm ,  Deborah Sweeney ,  Wilson Leonard Terry, Jr. ,  Jurgen Vogt ,  Lynn Cook Winterton

Inventor： Paul Clement Nicolson ,  Richard Carlton Baron ,  Peter Chabrecek ,  John Court ,  Angelika Domschke ,  Hans Jorg Griesser ,  Arthur Ho ,  Jens Hopken ,  Bronwyn Glenice Laycock ,  Qin Liu ,  Dieter Lohmann ,  Gordon Francis Meijs ,  Eric Papaspiliotopoulos ,  Judy Smith Riffle ,  Klaus Schindhelm ,  Deborah Sweeney ,  Wilson Leonard Terry, Jr. ,  Jurgen Vogt ,  Lynn Cook Winterton

IPC: G02C7/04 ,  A61F20060101 ,  A61F2/14 ,  A61L27/00 ,  A61L27/26 ,  A61L27/34 ,  B05D7/24 ,  B29C39/42 ,  B29C71/00 ,  B29D11/00 ,  C08F220/22 ,  C08F290/06 ,  C08F290/14 ,  C08F299/08 ,  C08G20060101 ,  C08G18/10 ,  C08G18/48 ,  C08G18/50 ,  C08G18/61 ,  C08G18/67 ,  C08G18/81 ,  C08G18/83 ,  C08G77/00 ,  C08G77/04 ,  C08G77/46 ,  C08J5/00 ,  C08K3/00 ,  C08L20060101 ,  C08L33/08 ,  C08L33/10 ,  C08L83/04 ,  G02B1/04 ,  G02C20060101

CPC classification number: G02C7/049 ,  A61L27/26 ,  A61L27/34 ,  B05D1/62 ,  B29C39/42 ,  B29D11/00076 ,  C08G18/10 ,  C08G18/4833 ,  C08G18/5015 ,  C08G18/61 ,  C08G18/672 ,  C08G18/8116 ,  C08G18/8175 ,  G02B1/043 ,  A61L2430/16 ,  B29C71/00 ,  B29L2011/0041 ,  Y10S525/903 ,  Y10S525/936 ,  Y10S525/937

Abstract: An ophthalmic lens suited for extended-wear periods of at least one day on the eye without a clinically significant amount of corneal swelling and without substantial wearer discomfort. The lens has a balance of oxygen permeability and ion or water permeability, with the ion or water permeability being sufficient to provide good on-eye movement, such that a good tear exchange occurs between the lens and the eye. A preferred lens is a copolymerization product of a oxyperm macromer and an ionoperm monomer. The invention encompasses extended wear contact lenses, which include a core having oxygen transmission and ion transmission pathways extending from the inner surface to the outer surface.