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369 条记录 (耗时 0.035 秒)

    Hybrid filter for high slew rate output current application
    51.
    发明授权
    Hybrid filter for high slew rate output current application 失效

    公开(公告)号：US07583065B2

    公开(公告)日：2009-09-01

    申请号：US12401815

    申请日：2009-03-11

    申请人： Ming Xu ,  Yuancheng Ren ,  Fred C. Lee ,  Andrew P. Schmit

    发明人： Ming Xu ,  Yuancheng Ren ,  Fred C. Lee ,  Andrew P. Schmit

    IPC分类号： G05F1/614 ,  G05F1/563

    CPC分类号： H02M3/158 ,  H02M2001/0045

    摘要： An active linear regulator circuit in parallel with a filter capacitor of a switching voltage regulator injects current to a load only when the switching regulator and capacitor cannot supply adequate current to follow high frequency load transients in a manner which is compatible with adaptive voltage positioning (AVP) requirements. control of current injection and determination of the insufficiency of current from the switching regulator and capacitors is achieved by impedance matching of the linear regulator to the switching regulator. The linear regulator thus operates at relatively low current and duty cycle to limit power dissipation therein. By matching impedances and increasing the bandwidth of the switching regulator, filter capacitor requirements can be reduced to the point of being met entirely by packaging and/or on-die capacitors which may be placed close to or at the point of load to reduce parasitic inductance, as can the linear regulator.

    Reactive Dye and Process of Printing Same
    52.
    发明申请
    Reactive Dye and Process of Printing Same 审中-公开
    反应性染料和印刷过程相同

    公开(公告)号：US20090021568A1

    公开(公告)日：2009-01-22

    申请号：US12064376

    申请日：2006-08-28

    申请人： Ming Xu

    发明人： Ming Xu

    IPC分类号： B41J2/17

    CPC分类号： D06P5/30 ,  C09B67/0008 ,  C09B67/0033 ,  C09B67/0041 ,  C09B67/0073 ,  C09B67/0082 ,  C09B69/10 ,  C09D11/00 ,  C09D11/328 ,  C09D11/38 ,  D06P1/16 ,  D06P1/38 ,  D06P1/48

    摘要： A method of printing an ink that comprises reactive dyes as colorants. The ink has at least one cyclodextrin (CD) compound to react with reactive dye molecules, while a hydrophobic cavity is filled with a disperse dye component to create an encapsulation prior to the ink formulation stage. The ink also includes a crosslinking agent that is capable of creating a chemical bonding reaction between the unreacted portion of the hydroxyl functional groups of cyclodextrin (CD), an optional alkaline substance, and other optional ink additives. Permanently bonded color images are provided by the reaction between the chemically altered and colored cyclodextrin (CD) and the final substrate, which may be any cellulosic, protein, or polyamide fiber material, or mixtures with polyester, by the application of energy.

    摘要翻译： 一种印刷包含活性染料作为着色剂的油墨的方法。 油墨具有至少一种环糊精（CD）化合物以与活性染料分子反应，而疏水空腔填充有分散染料组分以在油墨配制阶段之前产生包封。 油墨还包括能够在环糊精（CD）的羟基官能团的未反应部分，任选的碱性物质和其它任选的油墨添加剂之间产生化学键合反应的交联剂。 通过化学改性和着色的环糊精（CD）和最终的底物（其可以是任何纤维素，蛋白质或聚酰胺纤维材料或与聚酯的混合物）通过施加能量的反应来提供永久粘合的彩色图像。

    Asymmetrical Interleaving Strategy for Multi-Channel Power Converters
    53.
    发明申请
    Asymmetrical Interleaving Strategy for Multi-Channel Power Converters 有权
    多通道电源转换器的非对称交错策略

    公开(公告)号：US20080239771A1

    公开(公告)日：2008-10-02

    申请号：US11834281

    申请日：2007-08-06

    申请人： Chuanyun Wang ,  Ming Xu ,  Fred C. Lee

    发明人： Chuanyun Wang ,  Ming Xu ,  Fred C. Lee

    IPC分类号： H02M1/12

    CPC分类号： H02M1/12 ,  H02M1/42 ,  H02M3/1584 ,  H02M2003/1586 ,  Y02B70/12

    摘要： In a power converter having m=two or more channels of power factor correction (PFC) circuits connected in parallel and an electromagnetic interference (EMI) filter connected in series therewith, phase shifts in switching between the respective PFC channels can allow increase of EMI filter corner frequency allowing reduction of size and cost of the EMI filter at some switching frequencies. Asymmetrical phase shifts (other than 360°/m) such as 360°/2m and other phase shifts and variations in m allow increase of EMI filter corner frequency at switching frequencies where symmetrical, 360°/m phase shifts provide no benefit to EMI filter design by providing cancellation or partial cancellation of different harmonics of the switching noise; which cancellation may be arranged to be complementary to the EMI filter function at more than one peak of the noise spectrum. (Such asymmetrical phase shifts do not significantly increase ripple and consequent switching noise). Alteration of m and corresponding alteration of phase shift may be performed adaptively for purposes of improving efficiency at light loads and the like.

    摘要翻译： 在具有并联连接的m = 2个或更多个功率因数校正（PFC）电路的通道和与其串联连接的电磁干扰（EMI））滤波器的功率转换器中，在相应PFC通道之间的切换中的相移可允许增加EMI滤波器 转角频率允许在某些开关频率下降低EMI滤波器的尺寸和成本。 360°/ 2m以外的不对称相移（360°/ 2m）和其它相移以及m的变化允许在对称的开关频率下增加EMI滤波器转角频率，360°/ m相移对EMI滤波器无益 通过提供消除或部分消除开关噪声的不同谐波的设计; 该消除可以被布置为在噪声谱的多于一个峰值处与EMI滤波器功能互补。 （这种非对称相移不会显着增加纹波和随之而来的开关噪声）。 m的改变和相移的相应改变可以自适应地进行，以提高轻负载等的效率。

    Power converters having capacitor resonant with transformer leakage inductance
    55.
    发明授权
    Power converters having capacitor resonant with transformer leakage inductance 有权
    电容转换器具有电容谐振与变压器漏感

    公开(公告)号：US07196914B2

    公开(公告)日：2007-03-27

    申请号：US10992227

    申请日：2004-11-19

    申请人： Yuancheng Ren ,  Fred C. Lee ,  Ming Xu

    发明人： Yuancheng Ren ,  Fred C. Lee ,  Ming Xu

    IPC分类号： H02M3/335

    CPC分类号： H02M3/33592 ,  H02M3/33569 ,  Y02B70/1433 ,  Y02B70/1475

    摘要： Power converters having reduced body diode conduction loss, reduced reverse recovery loss and lower switching noise, among other benefits, have a resonant capacitor Cr connected across an unfiltered output. The resonant capacitor Cr resonates with the leakage inductance Lk of the transformer. The resonant capacitor and leakage inductance are selected such that ½ a LC resonance period is equal to an ON time of each secondary switch S1 S2. The resonance provides zero current switching for secondary switches S1 S2, eliminates zero body diode conduction during dead times, and eliminates reverse recovery losses in the secondary switches. The present invention is applicable to many different circuit topologies such as full bridge, active clamp forward, push-pull forward, and center-tap secondary. The present converters provide high energy conversion efficiency and high frequency operation.

    摘要翻译： 具有降低的体二极管导通损耗，降低的反向恢复损耗和较低开关噪声以及其他益处的功率转换器具有连接在未滤波输出端的谐振电容器Cr。 谐振电容器Cr与变压器的漏电感Lk共振。 谐振电容器和漏电感被选择为使得LC共振周期的1/2相当于每个次级开关S 1 S 2的导通时间。 谐振为次级开关S 1 S 2提供零电流开关，在死区时间消除零体二极管导通，并消除次级开关中的反向恢复损耗。 本发明可应用于许多不同的电路拓扑，例如全桥，有源钳前进，推挽前进和中心抽头次级。 本转换器提供高能量转换效率和高频操作。

    Grating-based wavelength selective switch
    56.
    发明授权
    Grating-based wavelength selective switch 失效
    基于光栅的波长选择开关

    公开(公告)号：US07167616B2

    公开(公告)日：2007-01-23

    申请号：US10923369

    申请日：2004-08-20

    申请人： Peiching Ling ,  Wayne Lui ,  Jinliang Chen ,  Jianjun Zhang ,  Ming Xu ,  Yu Chen

    发明人： Peiching Ling ,  Wayne Lui ,  Jinliang Chen ,  Jianjun Zhang ,  Ming Xu ,  Yu Chen

    IPC分类号： G02B6/34

    CPC分类号： G02B6/12007 ,  G02B6/124 ,  G02B6/125 ,  G02B6/29319 ,  G02B6/29323 ,  G02B2006/12097 ,  G02B2006/12145 ,  G02B2006/1215

    摘要： The present invention is a wavelength-selective optical transmission system that includes a first waveguide for transmitting a multiplexed optical signal therethrough. The system further includes a second waveguide coupled to the first waveguide wherein a least one of the first and second waveguides have a set of wavelength-selective Bragg gratings disposed near a coupling section between the first and second waveguides to reflect a reflecting optical signal back to the first waveguide and for transmitting a contra-directional optical signal and a co-directional optical signal having respectively a contra-directional selected wavelength and a co-directional selected wavelength corresponding to the Bragg gratings. One of the contra-directional and co-directional wavelengths is chosen as a designated wavelength, and the reflecting optical signal and one of the contra-directional or co-directional optical signals are outside of a predefined range surrounding the designated wavelength.

    摘要翻译： 本发明是一种波长选择性光传输系统，其包括用于透过复用光信号的第一波导。 该系统还包括耦合到第一波导的第二波导，其中第一和第二波导中的至少一个波导具有布置在第一和第二波导之间的耦合部分附近的一组波长选择布拉格光栅，以将反射光信号反射回 第一波导和用于发送具有分别对应于布拉格光栅的反向选择波长和共同选择波长的双向光信号和同向光信号。 选择反向和同向波长中的一个作为指定波长，并且反射光信号和反向光信号之一以及指向波长周围的预定范围之外。

    Communication control device, communication terminal device, server device, and communication control method
    57.
    发明申请
    Communication control device, communication terminal device, server device, and communication control method 有权

    公开(公告)号：US20060253888A1

    公开(公告)日：2006-11-09

    申请号：US10543176

    申请日：2004-01-29

    申请人： Satoshi Senga ,  Go Nakano ,  Sachiko Takeshita ,  Ming Xu

    发明人： Satoshi Senga ,  Go Nakano ,  Sachiko Takeshita ,  Ming Xu

    IPC分类号： H04N7/173

    CPC分类号： H04W24/00 ,  H04L47/14 ,  H04L47/2475

    摘要： A communication control apparatus, communication terminal apparatus, server apparatus, and communication control method are provided that continue video and/or voice communication in a way that feels seamless to the user even when communication conditions change in a mobile environment. Newly introducing a lower layer management section that notifies an upper layer of lower layer information such as field intensity and network congestion into a conventional communication terminal apparatus, which is configured in such a way that this lower layer information is concealed from the application, enables the connection control section that provides the application's service generation environment to recognize lower layer information directly, and makes possible various kinds of status determination and control changes based on lower layer information at the application level.

    Two-stage voltage regulators with adjustable intermediate bus voltage, adjustable switching frequency, and adjustable number of active phases
    58.
    发明授权
    Two-stage voltage regulators with adjustable intermediate bus voltage, adjustable switching frequency, and adjustable number of active phases 失效
    两级电压调节器，可调节中间总线电压，可调开关频率和可调节数量的有源相

    公开(公告)号：US07071660B2

    公开(公告)日：2006-07-04

    申请号：US11018920

    申请日：2004-12-22

    申请人： Ming Xu ,  Jinghai Zhou ,  Yuancheng Ren ,  Fred C. Lee ,  Jia Wei

    发明人： Ming Xu ,  Jinghai Zhou ,  Yuancheng Ren ,  Fred C. Lee ,  Jia Wei

    IPC分类号： H02M3/158

    CPC分类号： H02M3/156 ,  H02M2001/0019 ,  H02M2001/0032 ,  H02M2001/007 ,  Y02B70/16

    摘要： A two-stage power converter that dynamically adjusts to output current requirements includes a first stage regulator that provides power to a second stage regulator. The first stage can be a buck converter, and the second stage can be a multiple-phase buck converter. The output voltage of the first stage (intermediate bus voltage Vbus) is varied according to the load current to optimize conversion efficiency. To provide maximum efficiency, the Vbus voltage is increased as load current increases. The Vbus voltage provided by the first stage can be varied by duty cycle or operating frequency control. In another embodiment, the switching frequency of the second stage is varied as output current changes so that output current ripple is held constant. In an embodiment employing a multiple-phase buck converter in the second stage, the number of operating phases are varied as output current changes.

    摘要翻译： 动态调节输出电流要求的两级功率转换器包括为第二级调节器提供电源的第一级稳压器。 第一级可以是降压转换器，第二级可以是多相降压转换器。 第一级（中间总线电压Vbus）的输出电压根据负载电流而变化，以优化转换效率。 为了提供最大的效率，Vbus电压随着负载电流的增加而增加。 第一级提供的Vbus电压可以通过占空比或工作频率控制来改变。 在另一个实施例中，当输出电流改变时，第二级的开关频率变化，使得输出电流纹波保持恒定。 在第二级采用多相降压转换器的实施例中，随着输出电流的变化，工作阶段的数量变化。

    Power converters having output capacitor resonant with autotransformer leakage inductance
    59.
    发明申请
    Power converters having output capacitor resonant with autotransformer leakage inductance 有权
    具有输出电容器的功率转换器与自耦变压器漏感谐振

    公开(公告)号：US20060109696A1

    公开(公告)日：2006-05-25

    申请号：US11094434

    申请日：2005-03-31

    申请人： Yuancheng Ren ,  Julu Sun ,  Ming Xu ,  Fred Lee

    发明人： Yuancheng Ren ,  Julu Sun ,  Ming Xu ,  Fred Lee

    IPC分类号： H02M7/757

    CPC分类号： H02M3/33592 ,  H02M3/3376 ,  H02M2001/0058 ,  Y02B70/1433 ,  Y02B70/1475 ,  Y02B70/1491

    摘要： Power converters having reduced body diode conduction loss, reduced reverse recovery loss and lower switching noise, among other benefits, have a resonant capacitor Cr connected across an unfiltered output. The resonant capacitor Cr resonates with the leakage inductance Lk of the transformer. The resonant capacitor and leakage inductance are selected such that ½ a LC resonance period is equal to an ON time of each secondary switch S1 S2. The resonance provides zero current switching for secondary switches S1 S2, eliminates zero body diode conduction during dead times, and eliminates reverse recovery losses in the secondary switches. The present invention is applicable to many different circuit topologies such as full bridge, active clamp forward, push-pull forward, and center-tap secondary. The present converters provide high energy conversion efficiency and high frequency operation.

    摘要翻译： 具有降低的体二极管导通损耗，降低的反向恢复损耗和较低开关噪声以及其他优点的功率转换器具有连接在未滤波输出端的谐振电容器Cr。 谐振电容器Cr与变压器的漏电感Lk共振。 选择谐振电容器和漏电感，使得LC谐振周期的1/2相当于每个次级开关S 1 S 2的导通时间。谐振为次级开关S 1 S 2提供零电流开关，消除零体二极管导通 并且消除了次级开关中的反向恢复损耗。 本发明可应用于许多不同的电路拓扑，例如全桥，有源钳前进，推挽前进和中心抽头次级。 本转换器提供高能量转换效率和高频操作。

    Optical equalization with beam counter-propagation
    60.
    发明授权
    Optical equalization with beam counter-propagation 失效

    公开(公告)号：US07023611B2

    公开(公告)日：2006-04-04

    申请号：US10077617

    申请日：2002-02-15

    申请人： Tizhi Huang ,  Ming Xu ,  Chongchang Mao ,  Tiejun Xia ,  Wei Feng

    发明人： Tizhi Huang ,  Ming Xu ,  Chongchang Mao ,  Tiejun Xia ,  Wei Feng

    IPC分类号： H04B10/12

    CPC分类号： H04B10/2941 ,  H04B10/0731

    摘要： Devices and methods for equalizing the gain of an optical amplifier are described. For devices including harmonic filters that are controllable by amplitude control voltages and phase control voltages, techniques for controlling the amplitude control voltages and phase control voltages are presented. Additionally, device architectures are described by which an incoming optical signal is equalized to compensate for uneven gain in prior amplifiers or other optical components, and in which the incoming optical signal is received at a beam displacer and separated into orthogonal component beams, wherein the beams are counter-propagated through the equalizer in opposite directions through the same spatial path so as to minimize or eliminate the effects spatially dependent imperfections in the equalizer.