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    Optical waveguide and a method for providing an optical waveguide
    61.
    发明授权
    Optical waveguide and a method for providing an optical waveguide 失效
    光波导和提供光波导的方法

    公开(公告)号：US06978057B1

    公开(公告)日：2005-12-20

    申请号：US10088758

    申请日：2000-09-25

    申请人： James Christopher O'Gorman ,  Paul McEvoy ,  David McDonald ,  Frederick Paul Logue ,  Pascal Michel Landais

    发明人： James Christopher O'Gorman ,  Paul McEvoy ,  David McDonald ,  Frederick Paul Logue ,  Pascal Michel Landais

    IPC分类号： G02B6/00 ,  G02B6/10 ,  G02F1/00 ,  H01S5/10 ,  H01S5/40

    CPC分类号： H01S5/4031 ,  H01S5/0654 ,  H01S5/10 ,  H01S5/1017 ,  H01S5/4087

    摘要： A laser diode (1) having an optical path (15) defined in an active layer (2) which is sandwiched between a substrate layer (3) and a top layer (4) and defined by a ridge (14) formed in the top layer (4) outputs laser light of a single predetermined wavelength. Refractive index altering grooves (21) extending transversely in the top layer (4) are provided at spaced apart locations for altering the refractive index of the active layer (2) along the optical path at partial reflecting locations (20) for causing partial longitudinal reflections of the laser light generated in the optical path (15) so that standing waves or harmonics thereof of the single predetermined wavelength are set up between the respective partial reflecting locations (20) and a first mirror facet (8) in the optical path (15). In order that the standing waves set up between the partial reflecting locations (20) and the first mirror facet (8) are harmonics of the predetermined single wavelength, the refractive index altering grooves (21) are located along the ridge (14) for forming the reflecting locations (20) at distances from the first mirror facet (8) which correspond to the effective length of the optical path (15) resulting from the affect of the inclusion of the reflecting locations (20) rather than at locations corresponding to the actual length of the light path (15).

    摘要翻译： 一种激光二极管（1），其具有限定在有源层（2）中的光路（15），该有源层（2）夹在基板层（3）和顶层（4）之间，并由形成在顶部 层（4）输出单个预定波长的激光。 在间隔开的位置处提供横向延伸在顶层（4）中的折射率改变槽（21），用于在部分反射位置（20）处沿着光路改变有源层（2）的折射率，以使局部纵向反射 在所述光路（15）中产生的激光的每个部分反射位置（20）和所述光路（15）中的第一镜面（8）之间建立其单个预定波长的驻波或谐波 ）。 为了在部分反射位置（20）和第一镜面（8）之间建立的驻波是预定单波长的谐波，折射率改变槽（21）沿着脊（14）定位成形 距离第一镜面（8）的距离对应于由包含反射位置（20）的影响而导致的光路（15）的有效长度的反射位置（20），而不是对应于 光路的实际长度（15）。

    Surface enhancing coating for gypsum-containing floor underlayments
    62.
    发明申请
    Surface enhancing coating for gypsum-containing floor underlayments 有权
    含石膏地板底层的表面增强涂层

    公开(公告)号：US20050150427A1

    公开(公告)日：2005-07-14

    申请号：US10755786

    申请日：2004-01-12

    申请人： Qingxia Liu ,  John Ellicson ,  David McDonald

    发明人： Qingxia Liu ,  John Ellicson ,  David McDonald

    IPC分类号： B32B5/16 ,  C08H1/00 ,  C09D201/00 ,  E04F15/18

    CPC分类号： C09D201/00 ,  C04B28/14 ,  C04B2111/60 ,  E04F15/18 ,  Y10T428/25 ,  Y10T428/28 ,  Y10T428/2891 ,  Y10T428/31855 ,  C04B41/48

    摘要： A coating for preparing a floor underlayment to receive an adhesive, where the coating includes a water-soluble, latex polymer, a defoamer and a dual-function surface enhancing agent. The surface enhancing agent includes a set accelerator that also functions to cross link the adhesive, hardening the surface of the underlayment using at least two mechanisms. One embodiment of the invention is a dry mixture that forms a coating when added to water. The dry mixture includes from about 10% to about 50% of the redispersible polymer on a dry weight basis, from about 50% to about 90% of the surface enhancing agent and from about 0.15% to about 0.25% of the defoamer on a dry weight basis. Other embodiments describe a liquid coating formed by adding from about 1 to about 8 parts water to 1 part of the dry mixture on a volume basis.

    摘要翻译： 一种用于制备地板底层以接收粘合剂的涂层，其中涂层包括水溶性胶乳聚合物，消泡剂和双功能表面增强剂。 表面增强剂包括一种既可以使粘合剂交联的功能的固化加速剂，也可以使用至少两种机制来硬化底层的表面。 本发明的一个实施方案是当添加到水中时形成涂层的干燥混合物。 干燥混合物包含约10％至约50％的基于干重的可再分散聚合物，约50％至约90％的表面增强剂和约0.15％至约0.25％的消泡剂，其干燥 重量基础。 其它实施方案描述了通过以体积计从约1至约8份水添加至1份干燥混合物而形成的液体涂料。

    Ergonomic stringed instrument and ergonomic roundback guitar
    63.
    发明申请
    Ergonomic stringed instrument and ergonomic roundback guitar 有权
    符合人体工程学的弦乐器和符合人体工程学的回旋吉他

    公开(公告)号：US20050022650A1

    公开(公告)日：2005-02-03

    申请号：US10909542

    申请日：2004-08-02

    申请人： Frank Untermyer ,  Robert Wallace ,  David McDonald ,  Scott Keeley ,  Julian Groeli

    发明人： Frank Untermyer ,  Robert Wallace ,  David McDonald ,  Scott Keeley ,  Julian Groeli

    IPC分类号： G10D1/08 ,  G10D3/00 ,  G10D3/02

    CPC分类号： G10D1/08 ,  G10D3/02

    摘要： An ergonomic stringed instrument is described, presenting a novel ergonomic design incorporating one or more of an angled waist, provided as part of the waist portion of the stringed instrument bowl or body, and a contoured ridge, provided along at least a portion of the back of the stringed instrument bowl or body. The angled waist is provided on the treble side of the stringed instrument, which side may rest on the leg of a performer, and is configured with an angled contour towards the back of the stringed instrument. The contoured ridge runs along at least a portion of the bass side of the stringed instrument back and defines at least a slightly concave portion on the treble side of the contoured ridge.

    摘要翻译： 描述了符合人体工程学的弦乐器，其呈现出一种新颖的人体工程学设计，其包括一个或多个成角度的腰部，作为弦乐器碗或身体的腰部的一部分提供，以及沿着背部的至少一部分设置的轮廓脊 弦乐器或身体的弦乐器。 成角度的腰部设置在弦乐器的高音侧，哪一侧可以搁置在演奏者的腿上，并且被配置成朝着弦乐器背面的成角度的轮廓。 轮廓脊沿着弦乐器的低音侧的至少一部分延伸，并且在轮廓脊的高音侧限定至少一个略微凹入的部分。

    Low pressure xenon lamp and driver circuitry for use in theatrical productions and the like
    64.
    发明授权
    Low pressure xenon lamp and driver circuitry for use in theatrical productions and the like 失效
    低压氙灯和用于戏剧作品等的驱动电路

    公开(公告)号：US06140778A

    公开(公告)日：2000-10-31

    申请号：US466101

    申请日：1995-06-06

    申请人： David A. Pringle ,  David McDonald ,  Zhong Fang Yan ,  George Johnson

    发明人： David A. Pringle ,  David McDonald ,  Zhong Fang Yan ,  George Johnson

    IPC分类号： H05B37/02 ,  H05B41/34 ,  H05B37/00

    CPC分类号： H05B37/029 ,  H05B41/34 ,  Y10S315/04

    摘要： Disclosed is a lower pressure xenon lamp (12) and the driver circuitry therefor for producing relatively short bursts of intense light from the lamp (12). The lamp (12), including its associated driver circuitry (50) can be used in theatrical, stage, movie and/or video production to simulate, among other things, bursts of lighting. The lamp (12) is installed in a fixture together with a power supply (20) and a control system (50) is provided for controlling when the lamp (12) is turned on and off. Preferably, the control system (50) includes manually operated switches (53, 57, 54) and preferably one or more controllers (50) can be coupled together in a series fashion, should it be desired to control the lamp (12) for a greater number of time cycles then permitted by a single controller (50). Alternative power supplies (20) are disclosed. One power supply (20) permits the intensity of the flashes of light (12) to be controlled.

    摘要翻译： 公开了一种低压氙灯（12）及其驱动器电路，用于产生来自灯（12）的较强的强烈光的突发。 包括其相关联的驱动器电路（50）的灯（12）可以用于戏剧，舞台，电影和/或视频制作中，以模拟诸如照明的脉冲串。 灯（12）与电源（20）一起安装在固定装置中，并且提供控制系统（50），用于控制灯（12）何时开启和关闭。 优选地，控制系统（50）包括手动操作的开关（53,57,54），并且优选地，一个或多个控制器（50）可以以串联方式耦合在一起，如果希望将灯（12）控制在一个 由单个控制器（50）允许的更多数量的时间周期。 公开了替代电源（20）。 一个电源（20）允许控制闪光灯（12）的强度。

    System and method for electronic processing of cymbal vibration
    67.
    发明授权
    System and method for electronic processing of cymbal vibration 有权
    钹振动电子处理系统及方法

    公开(公告)号：US08497418B2

    公开(公告)日：2013-07-30

    申请号：US12966965

    申请日：2010-12-13

    申请人： John V. Roderick ,  Julia Truchsess ,  Christopher Ryan ,  David McDonald ,  Jonathan A. Marks

    发明人： John V. Roderick ,  Julia Truchsess ,  Christopher Ryan ,  David McDonald ,  Jonathan A. Marks

    IPC分类号： G10H1/12

    CPC分类号： G10H3/143 ,  G10H3/186 ,  G10H2230/321

    摘要： In one embodiment, an electronic cymbal system includes a first pickup configured to generate an electrical signal representative of vibrations in a first cymbal, and a controller configured to receive the first electrical signal and to process the first electrical signal to generate an output. The controller includes a digital signal processor (DSP) configured to subject a version of the first electrical signal to a digital signal processing technique. The digital signal processing technique includes one or more of dynamic range compression, expansion, frequency equalization, harmonic excitation, comb filtering, and pitch shifting. The cymbals may be any of variety of known cymbals, such as hi-hat, crash and ride cymbals, and may be of the perforated type configured to reduce noise for indoor use. Lighting control may be provided to illuminate the cymbal for functional or aesthetic purposes.

    摘要翻译： 在一个实施例中，电子钹系统包括被配置为产生代表第一钹的振动的电信号的第一拾取器和被配置为接收第一电信号并且处理第一电信号以产生输出的控制器。 控制器包括被配置为将第一电信号的版本对数字信号处理技术进行管理的数字信号处理器（DSP）。 数字信号处理技术包括动态范围压缩，扩展，频率均衡，谐波激励，梳状滤波和音调偏移中的一个或多个。 钹可以是各种已知的钹，例如踩hat，碰撞和乘坐钹，并且可以是被配置为减少室内使用噪声的穿孔类型。 可以提供照明控制以照亮钹的功能或美观目的。

    Systems And Methods For Facilitating Classroom Interaction
    70.
    发明申请
    Systems And Methods For Facilitating Classroom Interaction 审中-公开
    促进课堂互动的系统与方法

    公开(公告)号：US20110300526A1

    公开(公告)日：2011-12-08

    申请号：US13154909

    申请日：2011-06-07

    申请人： David McDonald

    发明人： David McDonald

    IPC分类号： G09B3/00

    CPC分类号： G09B5/12 ,  G09B5/14

    摘要： In one embodiment, facilitating classroom interaction includes sending a message containing a question to be answered from a mobile device located within a classroom at which a class is being taught, receiving the message with a central server and identifying the class to which the message pertains, and displaying the question on a display device located within the classroom.

    摘要翻译： 在一个实施例中，促进课堂交互包括发送包含要从正在教导课堂的教室内的移动设备应答的消息的消息，用中央服务器接收消息并且识别消息所属的类， 并在位于教室内的显示设备上显示该问题。