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    • 4. 发明授权
    • Concealed ceiling panel system
    • 隐蔽天花板系统
    • US07841149B2
    • 2010-11-30
    • US11871482
    • 2007-10-12
    • Peter G. JahnScott G. JankovecThomas E. Smith
    • Peter G. JahnScott G. JankovecThomas E. Smith
    • E04B2/00E04B5/00E04B9/00
    • E04B9/26
    • A flexible ceiling panel is preferably formed from sheet metal, such as aluminum sheet. Each ceiling panel has a generally rectangular shape (corresponding in width to the spacing between the main runners) and is formed with a hem on all four edges. A series of bendable tabs are formed integrally with the hem of the panel. To secure the panel to the associated grid system, the tabs are folded upwardly and outwardly from the panel along two axes to secure the panel to the grid system. Alternatively, a plurality of separate spring clips is used to secure the panel to the grid system. Each clip includes a first leg adapted to have at least a portion thereof received in the hem of the ceiling panel. A second leg extends generally perpendicularly from the first leg and includes a detent extending toward the first leg, the detent being adapted to secure the clip to the flange of the runner.
    • 弹性顶板优选由诸如铝板的金属板形成。 每个天花板板具有大致矩形的形状(宽度对应于主流道之间的间距),并且在所有四个边缘上形成有下摆。 与面板的下摆一体地形成一系列可弯曲的凸片。 为了将面板固定到相关的格栅系统,翼片沿着两个轴线从面板向上和向外折叠,以将面板固定在网格系统上。 或者,使用多个单独的弹簧夹来将面板固定到电网系统。 每个夹子包括适于使其至少一部分容纳在天花板面板的下摆中的第一腿部。 第二腿大致垂直地从第一腿部延伸并且包括朝向第一腿部延伸的止动件,该止动件适于将夹子固定到流道的凸缘上。
    • 5. 发明申请
    • CONCEALED CEILING PANEL SYSTEM
    • 隐蔽式天花板系统
    • US20080086962A1
    • 2008-04-17
    • US11871482
    • 2007-10-12
    • Peter G. JahnScott G. JankovecThomas E. Smith
    • Peter G. JahnScott G. JankovecThomas E. Smith
    • E04B9/00E04B9/04E04B9/18E04B9/26
    • E04B9/26
    • The present invention comprises a flexible ceiling panel preferably formed from sheet metal, such as aluminum sheet. Each ceiling panel has a generally rectangular shape (corresponding in width to the spacing between the main runners) and is formed with a hem on all four edges. A series of bendable tabs are formed integrally with the hem of the panel. To secure the panel to the associated grid system, the tabs are folded upwardly and outwardly from the panel along two axes to secure the panel to the grid system. Alternatively, a plurality of separate spring clips is used to secure the panel to the grid system. Each clip includes a first leg adapted to have at least a portion thereof received in the hem of the ceiling panel. A second leg extends generally perpendicularly from the first leg and includes a detent extending toward the first leg, the detent being adapted to secure the clip to the flange of the runner.
    • 本发明包括优选由金属片形成的柔性顶板,例如铝板。 每个天花板板具有大致矩形的形状(宽度对应于主流道之间的间距),并且在所有四个边缘上形成有下摆。 与面板的下摆一体地形成一系列可弯曲的凸片。 为了将面板固定到相关的格栅系统,翼片沿着两个轴线从面板向上和向外折叠,以将面板固定在网格系统上。 或者,使用多个单独的弹簧夹来将面板固定到电网系统。 每个夹子包括适于使其至少一部分容纳在天花板面板的下摆中的第一腿部。 第二腿大致垂直地从第一腿部延伸并且包括朝向第一腿部延伸的止动件,该止动件适于将夹子固定到流道的凸缘上。
    • 10. 发明授权
    • Motor control resolution enhancement
    • 电机控制分辨率提高
    • US06771894B2
    • 2004-08-03
    • US09746203
    • 2000-12-21
    • Thomas E. Smith
    • Thomas E. Smith
    • H02P5165
    • H04N9/3114H04N5/7416H04N5/7458H04N9/22
    • A motor speed resolution enhancement method and system. A display system controller (202) measures the frame rate of an incoming signal to determine the desired color wheel speed. A digital speed control word (212) representing the desired color wheel speed is written to the motor control circuit (204). The motor control circuit uses the digital speed control word (212) to generate analog control voltages (214) that drive the motor (206). The motor controller (204) also detects the position of the motor and generates a series of commutation interrupts (216). The display system controller 202 accurately measures the input signal's frame rate to determine the proper rate at which to spin the color wheel. The resulting desired speed word has a higher resolution than the motor control circuit (204) is able to receive. The disclosed invention provides a method of increasing the resolution of the digital speed control word (212) without upgrading the resolution of the motor control circuit (204). The disclosed invention uses feedback signals from the motor control circuit (204) that occur several times each revolution to force an update of the digital speed control word (212). The periodically updated digital speed control word (212) is dithered so that the average digital speed control word value represents the desired speed of the motor.
    • 电机速度分辨率增强方法和系统。 显示系统控制器(202)测量输入信号的帧速率以确定期望的色轮速度。 表示所需色轮速度的数字速度控制字(212)被写入电机控制电路(204)。 马达控制电路使用数字速度控制字(212)产生驱动马达(206)的模拟控制电压(214)。 电动机控制器(204)还检测电动机的位置并产生一系列换向中断(216)。 显示系统控制器202精确地测量输入信号的帧速率以确定旋转色轮的适当速率。 所得到的期望速度字具有比电动机控制电路(204)能够接收的更高的分辨率。 所公开的发明提供了一种在不升级电动机控制电路(204)的分辨率的情况下增加数字速度控制字(212)的分辨率的方法。 所公开的发明使用来自电动机控制电路(204)的反转信号,其每次旋转几次,以强制数字速度控制字(212)的更新。 周期性更新的数字速度控制字(212)被抖动,使得平均数字速度控制字值表示电机的期望速度。