公开(公告)号：US07174127B2

公开(公告)日：2007-02-06

申请号：US10246868

申请日：2002-09-17

申请人： David D. Otten ,  David G. Duckworth

发明人： David D. Otten ,  David G. Duckworth

IPC分类号： H04B7/185 ,  H04Q7/20

CPC分类号： H04B7/18563 ,  H04B7/1858 ,  H04L12/5692

摘要： A hybrid satellite communications system provides communications, particularly Internet access, to computer users. The hybrid satellite communications system includes a satellite system and a terrestrial communications system. The satellite system includes two transceivers. The first transceiver receives and transmits a first set of signals received from the terrestrial communications system to a plurality of user units. In reverse fashion, the satellite systems second transceiver receives a second set of signals in a second frequency band from the user units and transmits those signals back to the terrestrial communications system. The first set of signals (downlink signals) are of much higher frequency than the second set of signals (uplink signals). Preferably, the first set of signals are relayed by a Direct Broadcast System (DBS) satellite in a frequency band between 12.2 GHz and 12.9 GHz, while the second set of signals are relayed by a Mobile Satellite System (MSS) satellite operating between 1.0 GHz and 3.0 Ghz, or relayed by a terrestrial node operating between 0.8 and 2.0 Ghz. The differences in frequency between the first set of signals and second set of signals is considered optimal for the transmission and receipt of communications between a computer user with the Internet. Moreover, the present invention is capable of using the present communications infrastructures dedicated to the satellite transmission of television via DBS satellites, satellite cellular communications via MSS satellites, and radio communications via terrestrial cellular systems.

摘要翻译： 混合卫星通信系统向计算机用户提供通信，特别是互联网接入。 混合卫星通信系统包括卫星系统和地面通信系统。 卫星系统包括两个收发器。 第一收发器接收并发射从地面通信系统接收的第一组信号到多个用户单元。 以相反的方式，卫星系统第二收发机从用户单元接收第二频带中的第二组信号，并将这些信号发送回地面通信系统。 第一组信号（下行链路信号）的频率高于第二组信号（上行链路信号）。 优选地，第一组信号由在12.2GHz和12.9GHz之间的频带中的直接广播系统（DBS）卫星中继，而第二组信号由在1.0GHz之间工作的移动卫星系统（MSS）卫星中继 和3.0 Ghz，或由运行在0.8和2.0 Ghz之间的地面节点进行中继。 第一组信号和第二组信号之间的频率差异被认为是用于互联网的计算机用户之间的通信的发送和接收的最佳的。 此外，本发明能够使用专用于经由DBS卫星进行电视卫星传输的当前通信基础设施，经由MSS卫星的卫星蜂窝通信以及经由陆地蜂窝系统的无线电通信。

公开(公告)号：US07172303B2

公开(公告)日：2007-02-06

申请号：US10982327

申请日：2004-11-05

申请人： Michael Shipman ,  David G. Duckworth

发明人： Michael Shipman ,  David G. Duckworth

IPC分类号： G01D11/28

CPC分类号： G06F3/0202 ,  H01H13/70 ,  H01H2219/018 ,  H01H2219/037 ,  H01H2219/062

摘要： A keyboard is provided having illuminating keys. The keyboard includes a light channeling membrane and key members constructed at least partially of translucent material so that light produced from a light source is channeled upwardly to the upper surfaces of the key members. The light source may include LED or LEC systems in adjoining relationship to the light channeling membrane or light pipe. In a preferred embodiment, the light source is constructed of a substantially planar illuminescent sheet which underlies the light channeling membrane. In an alternative preferred embodiment, a light pipe is constructed to illuminate light laterally along a portion of its length to illuminate a plurality of key members.

公开(公告)号：USD661912S1

公开(公告)日：2012-06-19

申请号：US29374433

申请日：2011-08-11

申请人： Donna Hulina ,  David G. Duckworth

设计人： Donna Hulina ,  David G. Duckworth

公开(公告)号：US08890720B2

公开(公告)日：2014-11-18

申请号：US13374771

申请日：2012-01-12

申请人： Michael Shipman ,  David G. Duckworth

发明人： Michael Shipman ,  David G. Duckworth

IPC分类号： H03K17/94 ,  H03M11/00 ,  G08C19/12 ,  H04L17/02 ,  H01H9/00 ,  G06F3/02 ,  G09G5/00 ,  B41J5/00 ,  G06F3/00

CPC分类号： G06F3/0202

摘要： A light guide is provided for illuminating innumerable constructions, but which is ideally suited for illuminating the keys of a keyboard. The light guide includes a translucent planar plate having a top, a bottom and sides. Further, the light guide includes one or more cavities which project upwardly into the translucent plate from its bottom surface. The cavities are hollow or filled with a translucent material so that the translucent plate and the one or more cavities form translucent interfaces where the cavities interface with the plate. The light guide also includes a reflector which covers the plate bottom and cavity openings.

摘要翻译： 提供了一种用于照射无数结构但是理想地适合于照亮键盘的键的光导。 光导包括具有顶部，底部和侧面的半透明平面板。 此外，光导包括一个或多个从其底表面向上突出到半透明板中的空腔。 空腔是中空的或填充有半透明材料，使得半透明板和一个或多个空腔形成半透明界面，其中空腔与板接合。 光导还包括覆盖板底部和腔体开口的反射器。

公开(公告)号：US20090201179A1

公开(公告)日：2009-08-13

申请号：US12386075

申请日：2009-04-13

申请人： Michael Shipman ,  David G. Duckworth

发明人： Michael Shipman ,  David G. Duckworth

IPC分类号： H03M11/00

CPC分类号： G06F3/0202

摘要： A keyboard is provided having illuminating keys. A preferred keyboard includes scissor actuators for guiding and stabilizing each key in its upward and downward movement. A substantially translucent elastomeric diaphragm including elastomeric domes underlies the keys for biasing the keys upwardly. A seat underlies the elastomeric domes for supporting and engaging the bottom extremities of the scissor actuators. The seat may be made of translucent plastic, which functions as a translucent upper clamshell member, or non-translucent metal having sufficiently large holes for the passage of light. A substantially translucent circuit board is positioned under the seat for the creation and transmission of signals indicating depression of key members. The seat includes central holes allowing for the depression of keys to force the elastomeric domes to engage the circuit board to create electronic signals. A planar luminescent light source is positioned under the circuit board for transmitting light upwardly through the circuit board, seat, and elastomeric domes into the key members. The light source may include LED or LEC systems in adjoining relationship to a light pipe.

摘要翻译： 提供具有照明键的键盘。 优选的键盘包括用于在其向上和向下运动中引导和稳定每个键的剪刀致动器。 包括弹性体圆顶的基本上半透明的弹性膜片位于键的下方，用于向上偏压键。 座椅位于弹性圆顶下方，用于支撑和接合剪刀执行机构的下端。 座椅可以由半透明塑料制成，其用作半透明的上部蛤壳构件或具有足够大的孔以用于光通过的非半透明金属。 位于座椅下面的基本上半透明的电路板用于创建和传输指示关键构件的凹陷的信号。 座椅包括允许按压键的中心孔，以迫使弹性体圆顶与电路板接合以产生电子信号。 平面发光光源位于电路板下面，用于将光线向上透过电路板，座和弹性体圆顶传送到键构件中。 光源可以包括与光管相邻的LED或LEC系统。

公开(公告)号：US08690368B1

公开(公告)日：2014-04-08

申请号：US11208406

申请日：2005-08-22

申请人： Michael Shipman ,  David G. Duckworth

发明人： Michael Shipman ,  David G. Duckworth

IPC分类号： G01D11/28 ,  H01H9/16

CPC分类号： H01H13/83 ,  G01D11/28 ,  H01H2219/06 ,  H01H2219/062

摘要： A light guide is provided for illuminating innumerable constructions, but which is ideally suited for illuminating the keys of a keyboard. The light guide includes a translucent planar plate having a top, a bottom and sides. Further, the light guide includes one or more cavities which project upwardly into the translucent plate from its bottom surface. The cavities are hollow or filled with a translucent material so that the translucent plate and the one or more cavities form translucent interfaces where the cavities interface with the plate. The light guide also includes a reflector which covers the plate bottom and cavity openings. Light produced by a light source, preferably in the form of one or more LEDs, is transmitted to and through the translucent plate until striking the plate-cavity interfaces where the light is refracted into the cavities' interior or reflected upwardly to the plate's upper surface. After initial refraction into a cavity, the light reflects off the reflector and travels again into the translucent plate until transmitted from the plate's upper surface. Preferably, light guide is positioned within a keyboard housing with the cavities underlying the keys so that light is transmitted from the translucent sheet to the keys.

摘要翻译： 提供了一种用于照射无数结构但是理想地适合于照亮键盘的键的光导。 光导包括具有顶部，底部和侧面的半透明平面板。 此外，光导包括一个或多个从其底表面向上突出到半透明板中的空腔。 空腔是中空的或填充有半透明材料，使得半透明板和一个或多个空腔形成半透明界面，其中空腔与板接合。 光导还包括覆盖板底部和腔体开口的反射器。 由光源产生的光优选以一个或多个LED的形式传输并透过半透明板，直到撞击板 - 腔界面，其中光被折射入空腔的内部或向上反射到板的上表面 。 在初始折射到空腔中之后，光从反射器反射并再次进入半透明板，直到从板的上表面传播。 优选地，光导被定位在键盘壳体内，其中空腔位于键之下，使得光从透光片传递到键。

公开(公告)号：US20120139843A1

公开(公告)日：2012-06-07

申请号：US13374771

申请日：2012-01-12

申请人： Michael Shipman ,  David G. Duckworth

发明人： Michael Shipman ,  David G. Duckworth

IPC分类号： G06F3/02 ,  F21V8/00

CPC分类号： G06F3/0202

摘要： A light guide is provided for illuminating innumerable constructions, but which is ideally suited for illuminating the keys of a keyboard. The light guide includes a translucent planar plate having a top, a bottom and sides. Further, the light guide includes one or more cavities which project upwardly into the translucent plate from its bottom surface. The cavities are hollow or filled with a translucent material so that the translucent plate and the one or more cavities form translucent interfaces where the cavities interface with the plate. The light guide also includes a reflector which covers the plate bottom and cavity openings.

摘要翻译： 提供了一种用于照射无数结构但是理想地适合于照亮键盘的键的光导。 光导包括具有顶部，底部和侧面的半透明平面板。 此外，光导包括一个或多个从其底表面向上突出到半透明板中的空腔。 空腔是中空的或填充有半透明材料，使得半透明板和一个或多个空腔形成半透明界面，其中空腔与板接合。 光导还包括覆盖板底部和腔体开口的反射器。

公开(公告)号：US06619523B1

公开(公告)日：2003-09-16

申请号：US10104809

申请日：2002-03-20

申请人： David G. Duckworth

发明人： David G. Duckworth

IPC分类号： A45F300

CPC分类号： A47D13/025 ,  A45F3/00 ,  A45F3/08

摘要： An improved backpack is provided including a frame, pack shell, shoulder straps and waist strap. Connecting the pack shell to the frame of the backpack are one or more vibration dampers. Preferably, the vibration damper includes a cylindrical housing formed with a vertically extending bore aligned with the housing's central axis. A bore is configured for telescopic receipt of the siderails of the backpack frame. Located within the bore of the vibration damper is a spring which attenuates movement between the vibration damper's housing and a collar which radially projects from a portion of the frame's siderails. Preferably, the vibration damper includes an adjustable air valve for selectively controlling air to enter into and out of the chamber formed within the center of the vibration damper.

摘要翻译： 提供了一种改进的背包，包括框架，包装壳，肩带和腰带。 将包装外壳连接到背包的框架是一个或多个减震器。 优选地，振动阻尼器包括形成有与壳体的中心轴线对准的垂直延伸的孔的圆柱形壳体。 孔被配置为可伸缩地接收背包框架的挡板。 位于振动阻尼器的孔内的是弹簧，该弹簧减弱了振动阻尼器壳体与从框架的一部分轨道径向突出的套环之间的运动。 优选地，减震器包括可调节空气阀，用于选择性地控制空气进入和离开形成在振动阻尼器的中心内的室。