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    Single inductor dual output buck converter
    3.
    发明授权
    Single inductor dual output buck converter 有权
    单电感双输出降压转换器

    公开(公告)号：US07224085B2

    公开(公告)日：2007-05-29

    申请号：US10714103

    申请日：2003-11-14

    Applicant: Jun Chen ,  Valerian Mayega ,  David W. Evans ,  James L. Krug

    Inventor： Jun Chen ,  Valerian Mayega ,  David W. Evans ,  James L. Krug

    IPC: H02J1/00

    CPC classification number: H02M3/1588 ,  H02M2001/009 ,  Y02B70/1466 ,  Y10T307/707

    Abstract: A single-inductor dual-output buck converter facilitates power conversion by converting a single DC power source/supply into two separate DC outputs, each of which can be configured to provide a selected/desired voltage. The converter includes a single inductor and three power switches, which control operation of the converter. The converter has four basic stages of operation in which power is initially supplied to a first output that also stores charge. Subsequently, the stored charge of the first output is employed to provide power to a second output.

    Abstract translation: 单电感双输出降压转换器通过将单个DC电源/电源转换为两个独立的直流输出来促进功率转换，每个直流输出可以配置为提供所选择的/所需的电压。 该转换器包括单个电感器和三个电源开关，用于控制转换器的工作。 转换器具有四个基本操作阶段，其中电源最初被提供给也存储电荷的第一输出。 随后，采用第一输出的存储电荷为第二输出提供电力。

    Load-induced voltage overshoot detection and correction in switching power supplies
    4.
    发明授权
    Load-induced voltage overshoot detection and correction in switching power supplies 有权
    开关电源中的负载感应电压过冲检测和校正

    公开(公告)号：US07928714B2

    公开(公告)日：2011-04-19

    申请号：US11775489

    申请日：2007-07-10

    Applicant: Kae Ann Wong ,  David W. Evans ,  Joseph A. Nuniz ,  Norelis Medina ,  Siew Kuok Hoon ,  Wei-Chung Wu ,  Donald Thomas Pullen

    Inventor： Kae Ann Wong ,  David W. Evans ,  Joseph A. Nuniz ,  Norelis Medina ,  Siew Kuok Hoon ,  Wei-Chung Wu ,  Donald Thomas Pullen

    IPC: G05F1/00

    CPC classification number: H02M3/156

    Abstract: One embodiment of the invention includes a switching power supply system. The system includes a switch network comprising at least one switch configured to provide an output voltage based on switching activity thereof. The system also includes a switching controller configured to control the switch network to maintain the output voltage provided at an output based on a feedback signal associated with the output voltage. A converter pulse detector is configured to detect an output voltage overshoot condition based on the switching activity of the switch network corresponding to a transition in an output load to which the output voltage is provided.

    Abstract translation: 本发明的一个实施例包括开关电源系统。 该系统包括交换机网络，其包括被配置为基于其切换活动来提供输出电压的至少一个交换机。 该系统还包括开关控制器，其被配置为基于与输出电压相关联的反馈信号来控制开关网络来保持在输出处提供的输出电压。 A转换器脉冲检测器被配置为基于与提供输出电压的输出负载中的转变相对应的开关网络的开关活动来检测输出电压过冲条件。

    Real-time optical filtering system with spatial and temporal enhancement of visual information
    7.
    发明授权
    Real-time optical filtering system with spatial and temporal enhancement of visual information 失效
    实时光学滤波系统，具有视觉信息的空间和时间增强

    公开(公告)号：US4453804A

    公开(公告)日：1984-06-12

    申请号：US337349

    申请日：1982-01-06

    Applicant: David W. Evans

    Inventor： David W. Evans

    IPC: G02B27/46

    CPC classification number: G02B27/46

    Abstract: In a system of real-time coherent optical filtering of visual imagery which encompasses a laser and a set of lenses for transmitting a visual target image of an input, a Fabry-Perot interferometer for filtering the target image to produce a filtered target image at an output having a predetermined bandwidth of spatial frequency information, the improvements relate to transmitting and original unfiltered image to the output for overlaying the filtered image for spatial enhancement of the predetermined spatial frequency bandwidth of information in the filtered image, and flickering the filtered image to achieve temporal enhancement of the visual information in the spatial frequency bandwidth of interest.

    Abstract translation: 在包括用于传输输入的视觉目标图像的激光器和一组透镜的视觉图像的实时相干光学滤波系统中，用于对目标图像进行滤波以产生滤波的目标图像的法布里 - 珀罗干涉仪 输出具有空间频率信息的预定带宽，所述改进涉及将发射和原始未滤波图像输出到输出，以覆盖滤波图像以用于滤波图像中信息的预定空间频率带宽的空间增强，并且使滤波图像闪烁以实现 在感兴趣的空间频带中视觉信息的时间增强。

    Friction Bolt Assembly
    8.
    发明申请
    Friction Bolt Assembly 审中-公开
    摩擦螺栓组件

    公开(公告)号：US20110311315A1

    公开(公告)日：2011-12-22

    申请号：US12674387

    申请日：2008-08-20

    Applicant: David W. Evans ,  Hird Derek Colin ,  Boychuk Andrew Simon

    Inventor： David W. Evans ,  Hird Derek Colin ,  Boychuk Andrew Simon

    IPC: E21D21/00 ,  F16B13/04

    CPC classification number: E21D21/004 ,  E21D21/0033

    Abstract: A friction bolt assembly (1) comprises a friction bolt (2) with a pre-formed elongate column (3) of flexible, solid material retained within, and extending along a cavity (4) defined by the body (5) of the friction bolt (2). The body (5) of the friction bolt (2) is generally cylindrical and has a split (6) extending along its length.

    Abstract translation: 摩擦螺栓组件（1）包括摩擦螺栓（2），所述摩擦螺栓（2）具有预先形成的柔性固体材料细长柱（3），所述细长柱保持在由所述摩擦体（5）限定的空腔（4）内并沿其延伸， 螺栓（2）。 摩擦螺栓（2）的主体（5）通常是圆柱形的并且具有沿其长度延伸的裂口（6）。

    DC/DC switching regulator having reduced switching loss
    10.
    发明授权
    DC/DC switching regulator having reduced switching loss 有权
    DC / DC开关稳压器具有降低的开关损耗

    公开(公告)号：US06686729B1

    公开(公告)日：2004-02-03

    申请号：US10271121

    申请日：2002-10-15

    Applicant: J. Patrick Kawamura ,  James L. Krug ,  David W. Evans

    Inventor： J. Patrick Kawamura ,  James L. Krug ,  David W. Evans

    IPC: G05F140

    CPC classification number: H03K17/04163 ,  H02M3/155 ,  H02M2001/0048 ,  H03K2217/0036 ,  Y02B70/1491

    Abstract: A DC/DC switching regulator has a semiconductor switch coupled to an inductor, a first capacitor and a rectifier. A circuit to improve the switching efficiency of the semiconductor switch has a transmission gate coupled between the gate of the semiconductor switch and a second capacitor. The transmission gate is turned ON only when the gate of the semiconductor switch is about to make a positive or negative transition and isolated from the first and second voltage sources. A portion of the charge stored in the parasitic capacitance of the gate of the semiconductor switch can be stored in the second capacitor and reused to partially drive the semiconductor switch from the second to the first ON/OFF state. A further embodiment employs this technique with a synchronous rectifier in the regulator circuit.

    Abstract translation: DC / DC开关调节器具有耦合到电感器，第一电容器和整流器的半导体开关。 用于提高半导体开关的开关效率的电路具有耦合在半导体开关的栅极和第二电容器之间的传输栅极。 只有当半导体开关的栅极将要进行正或负的转换并且与第一和第二电压源隔离时，传输门才被接通。 存储在半导体开关的栅极的寄生电容中的电荷的一部分可以存储在第二电容器中并重新用于将半导体开关从第二导通/断开状态部分地驱动。 另一实施例在调节器电路中采用该技术与同步整流器。

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