公开(公告)号：US20080225969A1

公开(公告)日：2008-09-18

申请号：US12048322

申请日：2008-03-14

Applicant: LIN YANG ,  Qin Liu

Inventor： LIN YANG ,  Qin Liu

IPC: H04K1/10

CPC classification number: H04L27/2605

Abstract: In a TDS-OFDM system, a method for transmission is provided. The method comprises the step of: adjusting a PN sequence length, whereby a required performance is maintained. The adjusting step comprises increasing, decreasing, or keep unchanging the PN sequence length.

Abstract translation: 在TDS-OFDM系统中，提供了一种用于传输的方法。 该方法包括以下步骤：调整PN序列长度，由此保持所需的性能。 调整步骤包括增加，减少或保持不变PN序列长度。

公开(公告)号：US20080025384A1

公开(公告)日：2008-01-31

申请号：US11550342

申请日：2006-10-17

Applicant: Qin Liu ,  Dinesh Venkatachalam

Inventor： Qin Liu ,  Dinesh Venkatachalam

IPC: H03H7/30 ,  H04K1/10 ,  H04L27/06

CPC classification number: H04L25/03159 ,  H04L7/0029 ,  H04L7/04 ,  H04L25/0212 ,  H04L27/2605

Abstract: A device for equalization adapted for receiving a symbol and a channel frequency response is provided. The device includes a slicer for delimiting the channel frequency response to a sliced channel frequency response based upon a signal constellation; and a divider for dividing the received symbol using the sliced channel frequency response as the divider, with a resultant quotient of the divider as a reference point for future received symbols.

Abstract translation: 提供一种用于均衡的装置，用于接收符号和信道频率响应。 所述设备包括限幅器，用于基于信号星座将所述信道频率响应定界为限幅信道频率响应; 以及用于使用分片信道频率响应分割接收到的符号作为分频器的除法器，分频器的合成商作为未来接收符号的参考点。

公开(公告)号：US20070236218A1

公开(公告)日：2007-10-11

申请号：US11279107

申请日：2006-04-09

Applicant: Qin Liu

Inventor： Qin Liu

IPC: G01V3/00

CPC classification number: G01R33/3856

Abstract: Systems, methods and apparatus are provided through which heat produced in the patient examination space by the power used to create electromagnetic fields in an MRI/MRS system is significantly reduced by coolant carried by one of two split connected concentric coil layers of one of two of the primary gradient coils used to alter the main magnetic field. The coil carrying the coolant is made of copper tubing. The second primary gradient coil is placed between the layers of the split primary gradient coil. Adjusting the number of turns in each layer of the split primary gradient coil adjusts the heat generated. The inductances and resistances of the two primary gradient coils are balanced by adjusting the gain of the coils.

Abstract translation: 提供了一种系统，方法和装置，通过这些系统，方法和装置，通过用于在MRI / MRS系统中产生电磁场的功率在病人检查空间中产生的热量由两个分开连接的同心线圈层之一 用于改变主磁场的主梯度线圈。 承载冷却剂的盘管由铜管制成。 第二主梯度线圈被放置在分裂初级梯度线圈的层之间。 调整分裂初级梯度线圈每层的匝数调节产生的热量。 通过调节线圈的增益来平衡两个主梯度线圈的电感和电阻。

公开(公告)号：US07170944B1

公开(公告)日：2007-01-30

申请号：US10291154

申请日：2002-11-07

Applicant: Qin Liu ,  Lin Yang

Inventor： Qin Liu ,  Lin Yang

IPC: H04L27/28 ,  H04J11/00

CPC classification number: H04L25/03006 ,  H04B1/7113 ,  H04L25/0202 ,  H04L27/261 ,  H04L2025/03598

Abstract: Method and system for determining whether one or more multipath signals is present in a received signal frame that includes a reference symbol (RS) sequence RS(t;m1) as part of the frame, and for iteratively evaluating a multipath signal that is present. The RS sequence index (m1) for the frame is identified, and first and second Fourier transforms Φ(f;m1;ref) and Φ(f;rec) for the received frame are provided for a selected time segment IS that includes the RS sequence of the received frame. An inverse Fourier transform σ(t;m1) of the ratio of the transforms is computed and analyzed. If at least one multipath signal is present, σ(t;m1) is nonlinearly filtered, and the filtered function is convolved with RS(t;m1). This convolution represents a received signal extension, due to multipath signal(s) presence. A refinement procedure analyzes a contribution to multipath signals from the preceding frame(s). The procedure is iteratively driven toward an optimal representation of any multipath signal(s) present.

Abstract translation: 用于确定在包括作为帧的一部分的参考符号（RS）序列RS（t; m 1）的接收信号帧中是否存在一个或多个多径信号的方法和系统，并且用于迭代地评估存在的多径信号 。 识别该帧的RS序列索引（m 1），并且为所选择的时间段IS提供接收帧的第一和第二傅里叶变换Phi（f; m 1; ref）和Phi（f; rec） 接收帧的RS序列。 计算和分析变换比率的傅立叶逆变换Σ（t; m 1）。 如果存在至少一个多径信号，则σ（t; m 1）被非线性滤波，滤波后的函数与RS（t; m 1）卷积。 由于多路径信号存在，该卷积表示接收到的信号扩展。 细化程序分析对来自前一帧的多路径信号的贡献。 该过程被迭代地驱动到存在的任何多径信号的最佳表示。

公开(公告)号：US20060215095A1

公开(公告)日：2006-09-28

申请号：US11089974

申请日：2005-03-26

Applicant: Qin Liu ,  Curt Nelson ,  Gregg Combs

Inventor： Qin Liu ,  Curt Nelson ,  Gregg Combs

IPC: G02F1/1337

CPC classification number: G02F1/133788 ,  G02F1/133753 ,  G02F2001/133738 ,  G02F2001/133742

Abstract: An alignment layer is provided over liquid crystals for a display. Alignment marks are laser-written on the alignment layer, such that the liquid crystals become aligned with one another.

Abstract translation: 在用于显示器的液晶上提供取向层。 对准标记被激光写在取向层上，使得液晶彼此对准。

公开(公告)号：US06902259B2

公开(公告)日：2005-06-07

申请号：US10165508

申请日：2002-06-06

Applicant: Chien-Hua Chen ,  Donald E. Wenzel ,  Qin Liu ,  Naoto Kawamura ,  Colby Van Vooren ,  Colin C Davis ,  Richard W Seaver ,  Carl Wu ,  Jeffery S Hess

Inventor： Chien-Hua Chen ,  Donald E. Wenzel ,  Qin Liu ,  Naoto Kawamura ,  Colby Van Vooren ,  Colin C Davis ,  Richard W Seaver ,  Carl Wu ,  Jeffery S Hess

IPC: B41J2/05 ,  B41J2/135 ,  B41J2/14 ,  B41J2/16

CPC classification number: B41J2/1639 ,  B41J2/1404 ,  B41J2/14072 ,  B41J2/1408 ,  B41J2/14129 ,  B41J2/1433 ,  B41J2/1603 ,  B41J2/162 ,  B41J2/1626 ,  B41J2/1628 ,  B41J2/1629 ,  B41J2/1631 ,  B41J2/164 ,  B41J2/1645 ,  B41J2002/14387 ,  B41J2002/14475

Abstract: A process for creating and an apparatus employing shaped orifices in a semiconductor substrate. A first layer of material is applied on the semiconductor substrate then a second layer of material is then applied upon the first layer of material. An orifice image is then transferred to the first layer of material and a fluid-well image is transferred to the second layer of material. That portion of the second layer of material where the orifice image is located is then developed along with that portion of the first layer of material where the fluid well is located to define an orifice in the substrate.

Abstract translation: 一种在半导体衬底中产生和使用成形孔的装置的方法。 将第一层材料施加在半导体衬底上，然后将第二层材料施加在第一层材料上。 然后将孔口图像转移到第一层材料，并将流体井图像转移到第二层材料。 孔口图像所在的第二层材料的那部分然后与位于流体井的第一材料层的那部分一起显影，以在衬底中限定孔口。

公开(公告)号：US20050035764A1

公开(公告)日：2005-02-17

申请号：US10604748

申请日：2003-08-14

Applicant: Anthony Mantone ,  Neil Clarke ,  Tomas Duby ,  Qin Liu ,  Michael Sellers

Inventor： Anthony Mantone ,  Neil Clarke ,  Tomas Duby ,  Qin Liu ,  Michael Sellers

IPC: A61B5/055 ,  G01R33/385 ,  G01R33/389 ,  G01V3/00

CPC classification number: G01R33/3856

Abstract: MRI operates by passing current through gradient coils to create a magnetic field. Creation of the magnetic field requires a relatively high current which causes a large heat build up within the MRI, especially in the patient space. The present invention provides for a hollow conductor through which a coolant can be passed directly during the application of current.

Abstract translation: MRI通过使电流通过梯度线圈来产生磁场。 磁场的产生需要相当高的电流，这在磁共振成像（MRI）中特别是在患者空间中产生较大的热积聚。 本发明提供了一种中空导体，通过其可以在施加电流期间直接通过冷却剂。

公开(公告)号：US06790416B2

公开(公告)日：2004-09-14

申请号：US10157279

申请日：2002-05-28

Applicant: L. Chris Mann ,  Timothy J Corbett ,  Qin Liu ,  Ravi Prasad

Inventor： L. Chris Mann ,  Timothy J Corbett ,  Qin Liu ,  Ravi Prasad

IPC: C01B302

CPC classification number: H01M8/04216 ,  B01J7/02 ,  B01J16/005 ,  B01J19/22 ,  C01B3/065 ,  F17C11/005 ,  H01M8/04208 ,  H01M8/065 ,  H01M2250/30 ,  Y02B90/18 ,  Y02E60/321 ,  Y02E60/362 ,  Y02E60/364

Abstract: Hydrogen generation system. A source of sodium borohydride is carried on a flexible substrate that moves from a feed roll to a takeup roll. A reaction among sodium borohydride, a catalyst and water evolves hydrogen and forms a by-product that is removed from the reaction area.

公开(公告)号：US06718632B2

公开(公告)日：2004-04-13

申请号：US10208331

申请日：2002-07-29

Applicant: Qin Liu ,  Naoto Kawamura ,  Chien-Hua Chen

Inventor： Qin Liu ,  Naoto Kawamura ,  Chien-Hua Chen

IPC: B23P1700

CPC classification number: B41J2/1645 ,  B41J2/1404 ,  B41J2/14145 ,  B41J2/1603 ,  B41J2/1628 ,  B41J2/1629 ,  B41J2/1631 ,  B41J2/1632 ,  B41J2/1634 ,  B41J2/1635 ,  Y10T29/49 ,  Y10T29/49085 ,  Y10T29/49401

Abstract: A method of creating a fluid ejection device is described. The fluid ejection device has a substrate having a set of thin-film layers disposed on a first surface. A photoresist is applied on the set of thin-film layers, the photoresist has openings defined therein. The set of thin-film layers and substrate in the openings are etched to create deep slots beneath the first surface of the substrate. The photoresist is removed. A protection layer is applied over the set of thin-film layers thereby filling the deep slots in the set of thin-film layers and substrate. A feed channel is created on a second surface of the substrate until the protection layer within the deep slots is exposed. The protection layer is then removed.

Abstract translation: 描述了一种产生流体喷射装置的方法。 流体喷射装置具有设置在第一表面上的一组薄膜层的基板。 在一组薄膜层上施加光致抗蚀剂，光致抗蚀剂在其中限定开口。 对该组开口中的薄膜层和衬底进行蚀刻以在衬底的第一表面下方形成深槽。 去除光致抗蚀剂。 在该组薄膜层上施加保护层，从而填充该组薄膜层和衬底中的深槽。 在衬底的第二表面上形成馈送通道，直到深槽内的保护层被暴露。 然后去除保护层。

公开(公告)号：US06680612B1

公开(公告)日：2004-01-20

申请号：US10065417

申请日：2002-10-16

Applicant: Graeme Colin McKinnon ,  Qin Liu

Inventor： Graeme Colin McKinnon ,  Qin Liu

IPC: G01V300

CPC classification number: G01R33/385

Abstract: A gradient coil assembly for use with an MR imaging system comprising: a main gradient coil disposed about an imaging axis to produce a gradient field; a corrector coil disposed about an imaging axis and positioned with a return portion substantially overlapping a return portion of main gradient coil. The main gradient coil and said corrector coil cooperate to provide a first field of view, the main gradient coil operates to provide a second field of view. A method of reducing power deposition in a gradient coil assembly comprising: determining a first current density corresponding to a first field-of-view for an effective gradient coil; computing a second current density corresponding to a second field of view, by reducing current from the first current density without changing a sign of said the associated therewith; determining a geometry for a main gradient coil; and ascertaining a geometry for a corrector coil.

Abstract translation: 一种用于MR成像系统的梯度线圈组件，包括：围绕成像轴设置的梯度线圈，以产生梯度场; 校正器线圈，围绕成像轴设置并且具有大致与主梯度线圈的返回部分重叠的返回部分定位。 主梯度线圈和所述校正线圈协作提供第一视场，主梯度线圈操作以提供第二视场。 一种降低梯度线圈组件中的功率沉积的方法，包括：确定对应于有效梯度线圈的第一视场的第一电流密度; 通过从所述第一电流密度减少电流而不改变与其相关联的符号来计算对应于第二视场的第二电流密度; 确定主梯度线圈的几何形状; 并确定校正线圈的几何形状。