High efficiency power converter with synchronous rectification
    1.
    发明申请
    High efficiency power converter with synchronous rectification 审中-公开
    具有同步整流的高效率功率转换器

    公开(公告)号:US20050174813A1

    公开(公告)日:2005-08-11

    申请号:US11044381

    申请日:2005-01-26

    IPC分类号: H02M3/335 H02M3/18

    摘要: This invention provides an AC-to-DC power converter that improves the overall conversion efficiency especially that at the minimum input ac voltage for universal input operation design by adopting a new combination of control strategies and topologies for the PFC pre-regulator and DC-to-DC converter. The PFC pre-regulator was arranged to provide a regulated bus voltage of which the amplitude is varied in accordance with input ac voltage by a follower boost controller to achieve best efficiency in minimum input ac voltage operation. A synchronous rectifier dual boost PFC pre-regulator was present for further reduction of the power loss in the converter. Symmetrical half-bridge or symmetrical full bridge switch devices were arranged for the primary side of DC-to-DC converter and synchronous rectification circuit with two synchronous rectifier were arranged for the secondary side of the DC-to-DC converter as combination of the AC-to-DC converter. The two synchronous rectifiers were controlled to turn on and turn off complementary to that to the primary half-bridge switch devices to insure a minimized power loss of that converter stage for the extended bus voltage operation design.

    摘要翻译: 本发明提供了一种AC到DC功率转换器,其通过采用控制策略和PFC预调节器和DC-to的拓扑结构的新组合来提高整体转换效率,特别是用于通用输入操作设计的最小输入交流电压 -DC转换器。 PFC预调节器被布置成提供调节总线电压,其中幅值根据随动升压控制器的输入交流电压而变化,以在最小输入交流电压操作中实现最佳效率。 存在同步整流器双升压PFC预调节器,用于进一步降低转换器的功率损耗。 配置对称半桥或对称全桥开关器件,用于DC-DC转换器的初级侧,并配有两个同步整流器的同步整流电路用于DC-DC转换器的次级侧,作为AC 直流转换器。 控制两个同步整流器导通和截止与主半桥开关器件互补的整流器,以确保用于扩展总线电压操作设计的该转换器级的最小功率损耗。

    MILLIMETER-WAVE RECEIVING DEVICE
    2.
    发明申请
    MILLIMETER-WAVE RECEIVING DEVICE 有权
    毫米波接收装置

    公开(公告)号:US20120011947A1

    公开(公告)日:2012-01-19

    申请号:US13126047

    申请日:2010-12-28

    IPC分类号: G01D21/00

    CPC分类号: G01K11/006 G01N22/00

    摘要: Disclosed is a millimeter-wave receiving device. The device includes at least one radiometer; and a positioning assembly for holding the radiometer, wherein the positioning assembly comprises: a first positioning member having a first surface; a second positioning member having a second surface, the first surface of the first positioning member and the second surface of the second positioning member holding the radiometer in opposite to each other. With the configuration according to the present invention, the at least one radiometer in the millimeter-wave receiving device can be located in all of freedoms on basis of various design requirements of the radiation path to ensure that the radiometer can be arranged in desired receiving positions.

    摘要翻译: 公开了一种毫米波接收装置。 该装置包括至少一个辐射计; 以及用于保持所述辐射计的定位组件,其中所述定位组件包括:具有第一表面的第一定位构件; 具有第二表面的第二定位构件,第一定位构件的第一表面和保持辐射计的第二定位构件的第二表面彼此相对。 利用根据本发明的配置,毫米波接收装置中的至少一个辐射计可以基于辐射路径的各种设计要求而位于所有自由度中,以确保辐射计可以被布置在期望的接收位置 。

    Method and apparatus for defending against SYN packet bandwidth attacks on TCP servers
    4.
    发明授权
    Method and apparatus for defending against SYN packet bandwidth attacks on TCP servers 有权
    防止TCP服务器上SYN数据包带宽攻击的方法和装置

    公开(公告)号:US07219228B2

    公开(公告)日:2007-05-15

    申请号:US10674208

    申请日:2003-09-29

    申请人: Dong Lin

    发明人: Dong Lin

    IPC分类号: G06F9/00

    CPC分类号: H04L63/1458 H04L2463/141

    摘要: A SYN packet bandwidth Distributed Denial-of-Service (DDoS) attack is defended against by intercepting and identifying SYN packets in a “DDoS gateway” advantageously positioned at the edge of the network to be protected (e.g., one hop upstream from the protected link), and by queuing these intercepted SYN packets in a separate queue from other TCP packet queues. Edge per-flow queuing is employed to provide isolation among individual TCP connections sharing the link. A fair scheduling algorithm such as round robin scheduling is used to ensure that SYN packets (such as those generated as part of a SYN bandwidth attack) cannot overwhelm the egress link in the presence of other TCP packets.

    摘要翻译: 通过拦截和识别有利地位于要保护的网络边缘的“DDoS网关”中的SYN分组来防止SYN分组带宽分布式拒绝服务(DDoS)攻击(例如,从受保护链路上游一跳) ),并且将这些截获的SYN数据包与其他TCP数据包队列在一个单独的队列中排队。 边缘每流队列用于在共享链路的各个TCP连接之间提供隔离。 使用诸如轮询调度的公平调度算法来确保在存在其他TCP分组的情况下,SYN分组(诸如作为SYN带宽攻击的一部分而生成的那些)不能压倒出口链路。

    Efficient lookup methods for ternary content addressable memory and associated devices and systems
    6.
    发明授权
    Efficient lookup methods for ternary content addressable memory and associated devices and systems 有权
    三元内容可寻址内存和相关设备和系统的高效查找方法

    公开(公告)号:US09077669B2

    公开(公告)日:2015-07-07

    申请号:US13159470

    申请日:2011-06-14

    申请人: Mounir Hamdi Dong Lin

    发明人: Mounir Hamdi Dong Lin

    摘要: Lookup techniques are described, which can achieve improvements in energy efficiency, speed, and cost, of IP address lookup, for example, in devices and systems employing ternary content addressable memory (TCAM). The disclosed subject matter describes dividing a route table into several sub-tries with disjoint range boundaries. In addition, the disclosed subject matter describes storing sub-tries of a route table between a TCAM and a faster and less costly memory. The disclosed details enable various refinements and modifications according to system design and tradeoff considerations.

    摘要翻译: 描述了查找技术,其可以实现IP地址查找的能量效率,速度和成本的改进,例如在采用三元内容可寻址存储器(TCAM)的设备和系统中。 所公开的主题描述了将路由表划分成具有不相交范围边界的几个子尝试。 此外,所公开的主题描述了在TCAM和更快且更便宜的存储器之间存储路由表的子尝试。 所公开的细节可以根据系统设计和权衡考虑进行各种改进和修改。

    WRITE POLE FOR RECORDING HEAD
    8.
    发明申请
    WRITE POLE FOR RECORDING HEAD 有权
    用于记录头的写入点

    公开(公告)号:US20130344351A1

    公开(公告)日:2013-12-26

    申请号:US13533411

    申请日:2012-06-26

    IPC分类号: G11B5/187

    摘要: A write pole structure disclosed herein includes a write pole layer, a bottom layer including a beveled surface, and a cap layer between the write pole layer and the bottom layer, wherein the cap layer is made of a material with hardness less than hardness of the write pole layer.

    摘要翻译: 这里公开的写入极结构包括写入极层,包括斜面的底层以及写入极层和底部层之间的盖层,其中盖层由硬度小于硬度的材料制成 写极层。

    SCANNING DEVICE USING RADIATION BEAM FOR BACKSCATTER IMAGING AND METHOD THEREOF
    9.
    发明申请
    SCANNING DEVICE USING RADIATION BEAM FOR BACKSCATTER IMAGING AND METHOD THEREOF 有权
    使用辐射光束进行背景扫描成像的扫描装置及其方法

    公开(公告)号:US20120288066A1

    公开(公告)日:2012-11-15

    申请号:US13519305

    申请日:2010-06-28

    IPC分类号: G21K5/00

    CPC分类号: G01N23/203 G21K1/043

    摘要: Disclosed is a scanning device using radiation beam for backscatter imaging. The scanning device includes a radiation source; a stationary shield plate and a rotary shield body positioned respectively between the radiation source and the subject to be scanned, wherein the stationary shield plate is fixed relative to the radiation source, and the rotary shield body is rotatable relative to the stationary shield plate. The ray passing area permitting the rays from the radiation source to pass through the stationary shield plate is provided on the stationary shield plate, and ray incidence area and ray exit area are respectively provided on the rotary shield body. During the process of the rotating and scanning of the rotary shield body, the ray passing area of the stationary shield plate intersects consecutively with the ray incidence area and the ray exit area of the rotary shield body to form scanning collimation holes. Further, a scanning method using radiation beam for backscatter imaging is also provided.

    摘要翻译: 公开了使用用于反向散射成像的辐射束的扫描装置。 扫描装置包括辐射源; 分别位于辐射源和待扫描对象之间的固定屏蔽板和旋转屏蔽体,其中固定屏蔽板相对于辐射源固定,并且旋转屏蔽体可相对于固定屏蔽板旋转。 在固定屏蔽板上设置允许来自辐射源的光线通过固定屏蔽板的射线通过面积,并且在旋转屏蔽体上分别设置射线入射区域和射出口区域。 在旋转屏蔽体的旋转和扫描过程中,固定屏蔽板的射线通过面积与旋转屏蔽体的射线入射面积和射线出射面积连续相交,形成扫描准直孔。 此外,还提供了使用用于反向散射成像的辐射束的扫描方法。

    Compensation device for synchronous rectifier control and method thereof
    10.
    发明授权
    Compensation device for synchronous rectifier control and method thereof 有权
    同步整流器控制补偿装置及其方法

    公开(公告)号:US08300430B2

    公开(公告)日:2012-10-30

    申请号:US12861768

    申请日:2010-08-23

    IPC分类号: H02M3/335 H02M7/217

    CPC分类号: H02M3/33592 Y02B70/1475

    摘要: The configurations of a compensation device configured in a circuit having a synchronous rectifier (SR), a controller and a load, and a compensation method thereof are provided in the present invention. In the proposed circuit, the SR includes a first terminal, a first inductor electrically connected to the first terminal in series, a second terminal and a second inductor electrically connected to the second terminal in series, the controller is coupled to the first and the second inductors, and the device includes a voltage source having a positive terminal coupled to the controller and a negative terminal coupled to the second inductor and providing a compensation voltage to reduce or eliminate the influence of the first and the second inductors towards a voltage value across the first and the second terminals.

    摘要翻译: 在本发明中提供了在具有同步整流器(SR),控制器和负载的电路中配置的补偿装置的结构及其补偿方法。 在所提出的电路中,SR包括第一端子,与串联的第一端子电连接的第一电感器,串联地电连接到第二端子的第二端子和第二电感器,控制器耦合到第一端子和第二端子 电感器,并且该器件包括具有耦合到控制器的正极端子的电压源和耦合到第二电感器的负极端子,并且提供补偿电压以减小或消除第一和第二电感器对跨越的电压值的影响 第一和第二终端。