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    Solid state optical reader with bi-directional protocol
    1.
    发明授权
    Solid state optical reader with bi-directional protocol 失效
    具有双向协议的固态光学读卡器

    公开(公告)号：US5444230A

    公开(公告)日：1995-08-22

    申请号：US159734

    申请日：1993-11-30

    申请人： Dwight G. Baldwin ,  James K. Kennedy ,  Steven G. Saxe

    发明人： Dwight G. Baldwin ,  James K. Kennedy ,  Steven G. Saxe

    IPC分类号： G06K7/14 ,  G06K7/10

    CPC分类号： G06K7/14

    摘要： An apparatus for reading an optical bar code on a transparent film uses a linear array of light sources and a linear, solid-state sensor located parallel with array. LED's are energized selectively in groups to avoid overlapping shadows on the sensor. A novel algorithm is used to reconstruct the shadowgraphs or image segments by searching for a transition (mark/space edge in the bar code) in an overlap zone at the boundary of adjacent segments on the sensor. Conventional techniques are then used to decode the reconstructed electronic image of the bar code. The apparatus is particularly useful in an electronic presentation system wherein the numeric value of the bar code is an image reference number (IRN) which is used to access a host computer and display a graphic image associated with the IRN. A novel bi-directional protocol is also presented for providing communications between the optical reader and the host computer. The protocol directs the host computer to download all IRN's for a given presentation to the reader. The reader can then locally determine if a bar code on a card corresponds to a valid IRN in the current presentation. The protocol may be adapted to download certain display control information and send associated control signals to the host computer based on keyboard input at the reader.

    摘要翻译： 用于读取透明膜上的光学条形码的装置使用光源的线性阵列和与阵列平行的线性固态传感器。 LED组被选择性地分组，以避免传感器上的重叠阴影。 一种新颖的算法用于通过在传感器上的相邻段的边界处的重叠区域中搜索过渡（条形码中的标记/空格边缘）来重建阴影图像或图像段。 然后使用常规技术对条形码的重建电子图像进行解码。 该装置在电子呈现系统中特别有用，其中条形码的数值是用于访问主计算机并显示与IRN相关联的图形图像的图像参考号（IRN）。 还提出了一种新颖的双向协议，用于在光学读取器和主机之间提供通信。 该协议指示主机将给定演示的所有IRN下载给读卡器。 然后，读者可以在本地确定卡上的条形码是否对应于当前呈现中的有效IRN。 该协议可以适合于下载某些显示控制信息，并且基于在读取器处的键盘输入将关联的控制信号发送到主计算机。

    Integrated front projection system with distortion correction and associated method
    2.
    发明授权
    Integrated front projection system with distortion correction and associated method 有权
    具有失真校正和相关方法的集成前置投影系统

    公开(公告)号：US06520646B2

    公开(公告)日：2003-02-18

    申请号：US09746808

    申请日：2000-12-22

    申请人： Ernesto M. Rodriguez, Jr. ,  Steven G. Saxe ,  Patricia H. DeLuca

    发明人： Ernesto M. Rodriguez, Jr. ,  Steven G. Saxe ,  Patricia H. DeLuca

    IPC分类号： G03B2114

    CPC分类号： G03B21/10 ,  G03B21/145 ,  H04N5/74 ,  H04N9/3185 ,  H04N9/3194

    摘要： A front projection system and associated method are disclosed that correct distortion for a front projector device. The front projector device is characterized by off-axis optics and a throw-to-screen diagonal ratio of at most 1 which generate distortion including pincushion, keystone and anamorphic distortion components. Further, the projection device has an electronic distortion correction component operable to pre-distort an image prior to projection in order to correct for the pincushion, keystone and anamorphic distortion components of the projector device. Further, an associated method is also disclosed for correcting distortion generated in a projection system by a combination of optical and electronic correction. The method comprises setting a limit on the amount of image information that is acceptable to lose through the optical components, and selecting an optical solution is comprising optics having inherent distortion within the set limit. Then, an electronic correction component is selected that is operable to pre-distort an image to correct for remaining distortion not corrected by the optics of the optical solution.

    摘要翻译： 公开了一种前投影系统和相关方法，用于校正前投影仪装置的失真。 前置放映机装置的特征在于离轴光学元件和至多1的歪斜对角线比例，其产生包括枕形，梯形失真和变形失真分量的失真。 此外，投影装置具有电子失真校正部件，其可操作以在投影之前对图像进行预失真，以便校正投影仪设备的枕形，梯形失真和变形失真部件。 此外，还公开了一种用于通过光学和电子校正的组合校正投影系统中产生的失真的相关方法。 该方法包括设置通过光学部件损失的可接受的图像信息量的限制，并且选择光学解决方案包括在设定极限内具有固有失真的光学器件。 然后，选择电子校正组件，其可操作用于对图像进行预失真以校正未被光学解决方案的光学器件校正的剩余失真。

    PROJECTION AND DISPLAY SYSTEM
    5.
    发明申请
    PROJECTION AND DISPLAY SYSTEM 审中-公开
    投影和显示系统

    公开(公告)号：US20120188519A1

    公开(公告)日：2012-07-26

    申请号：US13392635

    申请日：2010-08-30

    申请人： Stephen J. Willett ,  Martin B. Wolk ,  Terry L. Smith ,  Roy A. Auerbach ,  Michael A. Haase ,  Steven G. Saxe ,  Tommie W. Kelley

    发明人： Stephen J. Willett ,  Martin B. Wolk ,  Terry L. Smith ,  Roy A. Auerbach ,  Michael A. Haase ,  Steven G. Saxe ,  Tommie W. Kelley

    IPC分类号： G03B21/14

    CPC分类号： G03B21/204 ,  H04N9/3129 ,  H04N9/3138

    摘要： A projection system and a display that incorporates the projection system are provided. The projection system includes at least one electroluminescent device that emits a first wavelength of light, at least one semiconductor multilayer stack that downconverts the first wavelength of light to a second wavelength of light, and a scanning optical element that transmits the light along a scanned direction. The electroluminescent device can be part of an array of electroluminescent devices, and can be monolithic. The semiconductor multilayer stack can be part of an array of semiconductor multilayer stacks, and can also be monolithic. The scanning optical element can be positioned to scan the electroluminescent device across the semiconductor multilayer stack, or it can be positioned to scan the downconverted light after it has left the semiconductor multilayer stack.

    摘要翻译： 提供了投影系统和包括投影系统的显示器。 投影系统包括发射第一波长的光的至少一个电致发光器件，将至少一个将第一波长的光变换为第二波长的光的半导体多层叠层，以及沿扫描方向透射光的扫描光学元件 。 电致发光器件可以是电致发光器件的阵列的一部分，并且可以是单片的。 半导体多层堆叠可以是半导体多层堆叠的阵列的一部分，并且也可以是整体的。 扫描光学元件可以定位成跨越半导体多层堆叠扫描电致发光器件，或者可以将扫描光学元件定位成在其离开半导体多层堆叠之后扫描下变换的光。

    Light pipe having optimized cross-section
    6.
    发明授权
    Light pipe having optimized cross-section 失效
    光管具有优化的横截面

    公开(公告)号：US5309544A

    公开(公告)日：1994-05-03

    申请号：US861243

    申请日：1992-03-31

    申请人： Steven G. Saxe

    发明人： Steven G. Saxe

    IPC分类号： F21V8/00 ,  G02B6/00 ,  G02B6/10

    CPC分类号： G02B6/10 ,  G02B6/0096 ,  Y10S385/901

    摘要： A luminaire includes a light pipe having an optical axis. The light pipe includes a tube with a structured outer surface and a smooth inner surface. A reflective light extractor is positioned in the tube such that light reflected by the extractor will strike the tube on a first side. The first side has a contour such that the direction of travel of light reflected by the extractor will have a projection in the plane perpendicular to the optical axis that makes a predetermined angle with the smooth surface.

    摘要翻译： 灯具包括具有光轴的光管。 光管包括具有结构化外表面和光滑内表面的管。 反射光提取器位于管中，使得由提取器反射的光将在第一侧上撞击管。 第一侧具有轮廓，使得由提取器反射的光的行进方向将在与光轴垂直的平面中具有与光滑表面形成预定角度的突起。