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    • 8. 发明授权
    • Retractable teleconferencing apparatus
    • 伸缩式电话会议设备
    • US5666153A
    • 1997-09-09
    • US538792
    • 1995-10-03
    • David J. Copeland
    • David J. Copeland
    • H04N7/14H04M11/00
    • H04N7/144
    • A retractable video teleconferencing apparatus for a video monitor having an optical axis. An optical assembly includes a housing mounted to the video monitor; a track for moving the housing between a retracted position and a forward position in which the housing is positioned forward of the video monitor; a beamsplitter hingedly attached to the housing and movable between a first position in which the beamsplitter is positioned across the optical axis at an angle relative thereto, whereby optical images directed toward the display along the optical axis are at least partially reflected by the beamsplitter, and a second position in which the beamsplitter is retracted into the housing; and a video camera located in the housing and positioned relative to the beamsplitter for receiving the partially reflected images and for generating a video signal corresponding to the partially reflected images. The beamsplitter, in the first position, is mounted at a 45.degree. angle relative to the optical axis. An adjustable bracket secures the track to the video monitor. The housing may include a pair of retractable wings extending laterally therefrom to block out stray light. An opaque panel positioned below the beamsplitter and hinged thereto blocks stray images from the beamsplitter.
    • 一种用于具有光轴的视频监视器的可伸缩视频电话会议装置。 光学组件包括安装到视频监视器的壳体; 用于在缩回位置和前进位置之间移动壳体的轨道,其中壳体位于视频监视器的前方; 分束器铰接地附接到壳体并且可在第一位置和第二位置之间移动,在第一位置,分束器以相对于其的角度相对于光轴定位,由此沿着光轴指向显示器的光学图像至少部分地被分束器反射,并且 分束器缩回到壳体中的第二位置; 以及摄像机,其位于壳体中并且相对于分束器定位,用于接收部分反射的图像并用于产生对应于部分反射的图像的视频信号。 在第一位置的分束器相对于光轴以45度的角度安装。 可调节支架将轨道固定到视频监视器。 壳体可以包括从其横向延伸的一对可伸缩翼,以阻挡杂散光。 位于分束器下方并与其铰接的不透明面板阻挡来自分束器的杂散图像。
    • 9. 发明授权
    • Methods and apparatus for personal safety
    • 人身安全的方法和装置
    • US07712408B1
    • 2010-05-11
    • US11891448
    • 2007-08-10
    • David J. CopelandKermit W. Fox, Jr.
    • David J. CopelandKermit W. Fox, Jr.
    • F41H5/00
    • F41H5/08B42F9/004
    • A personal safety device for protection from a firearm attack includes a conventional accessory item adapted for use other than as a personal safety device and a bullet resistant panel that is integrated into the conventional accessory item. The conventional accessory item may take the form of a clipboard, a backpack or other item. Integration of the panel with the selected item is conducted in such a manner as to cause the panel to be placed in the path of fire when a person engages in natural defensive posturing. The clipboard is provided with a light, multiple spring clips and a suitably sized handle to encourage proper grasp of the clipboard for the intended purpose.
    • 用于防止枪支袭击的个人安全装置包括适用于除了作为个人安全装置和集成到常规附件中的防弹面板之外的常规附件。 传统的附件可以采取剪贴板,背包或其他物品的形式。 面板与所选项目的集成是以一种人从事自然防御姿态使面板置于火中的方式进行的。 剪贴板上设有一个光,多个弹簧夹和一个适当尺寸的手柄,以鼓励适当地抓住剪贴板用于预期目的。