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    • 4. 发明授权
    • Double-integrating silicon acceleration sensing device
    • 双积分硅加速度传感装置
    • US5044201A
    • 1991-09-03
    • US566789
    • 1990-08-13
    • Louis P. FaraceJohn D. Titus
    • Louis P. FaraceJohn D. Titus
    • G01P15/08G01P15/125
    • G01P15/125G01P15/0802
    • A double integrating silicon acceleration sensing device which is solid state and micromachined measures the acceleration of an object and determines the distance travelled by that object through its trajectory. The device comprises a hermetically sealed container. The cavity within the container is divided by a flexible silicon diaphragm into two separate cavities, one shallow and the other deep. The two cavities are filled with a fluid which is relatively incompressible over the range of operating pressure. The fluid can only transfer between the two cavities through an orifice. Two capacitor plates form a capacitor within the shallow cavity. One of the plates is secured to a central portion of the diaphragm, and the other plate is secured adjacent to and opposite of the first plate within the shallow cavity. When the accelerometer is at rest, the two plates are separated by a given distance X.sub.g. When the accelerometer experiences an acceleration, the diaphragm deflects into the deep cavity forcing fluid from the deep cavity into the shallow cavity. The gap between the two capacitor plates X.sub.g increases causing a change in the total capacitance. This capacitance value is exactly proportional to the distance travelled by the object for constant acceleration, and is approximately proportional to the distance travelled for other acceleration pulses. When capacitor plates are coupled adjacent and opposite each other in the deep cavity, in addition to capacitor plates in the shallow cavity, a differential capacitance results.
    • 固体和微加工的双积分硅加速度感测装置测量物体的加速度,并确定该物体通过其轨迹行进的距离。 该装置包括一个气密密封的容器。 容器内的空腔被柔性硅隔膜分成两个分开的空腔,一个是浅的,另一个是深的。 这两个空腔充满了在工作压力范围内相对不可压缩的流体。 流体只能通过孔口在两个空腔之间传递。 两个电容器板在浅腔内形成一个电容器。 其中一个板被固定到隔膜的中心部分,另一个板被固定在浅腔内的第一板的邻近和相对的位置。 当加速度计处于静止状态时,两个平板分隔给定距离Xg。 当加速度计经历加速度时,隔膜偏转到深空腔,迫使流体从深空腔进入浅腔。 两个电容器板Xg之间的间隙增加导致总电容的变化。 该电容值与用于恒定加速度的物体行进的距离精确成比例,并且与其他加速度脉冲的行进距离成正比。 当电容器板在深空腔中彼此相邻且相互耦合时,除了浅腔中的电容器板之外,还会产生差分电容。
    • 6. 发明授权
    • Reconfigurable microdisplay
    • 可重构微显示器
    • US06469766B2
    • 2002-10-22
    • US09740187
    • 2000-12-18
    • John K. WatermanJohn D. Titus
    • John K. WatermanJohn D. Titus
    • G02F11343
    • G02F1/134336G02F2001/134345
    • The present invention comprises a flat panel display, such as a liquid crystal microdisplay having a plurality of square and rectangular pixel electrodes that are addressable separately to produce a fine resolution display or addressable in combination to create a lower resolution display. By providing an array of square pixel electrodes with adjacent rectangular electrodes, the display is capable of displaying, for example, XGA or SXGA video data, full-size undistorted and in its native display format, thus obviating the need for expensive image processing chips to convert the image data from one format to another.
    • 本发明包括平板显示器,例如具有多个方形和矩形像素电极的液晶微显示器,其可单独寻址以产生精细分辨率显示器或组合可寻址以产生较低分辨率的显示器。 通过提供具有相邻矩形电极的方形像素电极的阵列,显示器能够显示例如全尺寸未失真的XGA或SXGA视频数据,并且以其本地显示格式显示,从而避免需要昂贵的图像处理芯片 将图像数据从一种格式转换为另一种格式。