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199 条记录 (耗时 0.047 秒)

    Method and apparatus for reading two-dimensional bar code employing bit-mapped imaging
    55.
    发明授权
    Method and apparatus for reading two-dimensional bar code employing bit-mapped imaging 失效
    使用位图成像读取二维条形码的方法和装置

    公开(公告)号：US5414250A

    公开(公告)日：1995-05-09

    申请号：US794

    申请日：1993-01-04

    申请人： Jerome Swartz ,  Boris Metlitsky

    发明人： Jerome Swartz ,  Boris Metlitsky

    IPC分类号： G06K7/10 ,  G06K19/06

    CPC分类号： G06K7/1093 ,  G06K19/06037 ,  G06K7/10881 ,  G06K7/1456 ,  G06K2019/06262

    摘要： An apparatus and method for reading data in the form of indicia on a surface of a target, the indicia having a preferred reading direction, including a light source for illuminating a portion of the surface to be read with a laser beam in a scanning pattern at a predetermined scanning angle so as to scan spatially adjacent portions of the surface. A detector and a processor is provided that is operative for detecting at least a portion of the light reflected from the indicia and storing representations thereof, and further determining the angular difference between the preferred reading direction and the scanning angle.

    摘要翻译： 一种用于以目标表面上的标记形式读取数据的装置和方法，所述标记具有优选的读取方向，包括用于以扫描模式用激光束照射要读取的表面的一部分的光源 以预定的扫描角度扫描表面的空间相邻部分。 提供检测器和处理器，其用于检测从标记反射的光的至少一部分并存储其表示，并进一步确定优选读取方向与扫描角之间的角度差。

    Laser diode scanner with enhanced visibility at an aiming distance relative to the reading distance
    57.
    发明授权
    Laser diode scanner with enhanced visibility at an aiming distance relative to the reading distance 失效
    激光二极管扫描仪在相对于读取距离的瞄准距离处具有增强的可见性

    公开(公告)号：US5304788A

    公开(公告)日：1994-04-19

    申请号：US865728

    申请日：1992-04-09

    申请人： Boris Metlitsky ,  Jerome Swartz

    发明人： Boris Metlitsky ,  Jerome Swartz

    IPC分类号： G06K7/10

    CPC分类号： G06K7/10881 ,  G06K7/10594 ,  G06K7/10811 ,  G06K2207/1013

    摘要： The visibility of a laser beam emitted by a laser diode in a scanner is enhanced to facilitate aiming the laser beam at a symbol to be read. An aperture stop in an optical train has an increased dimension along a non-scan direction. The magnification of a focusing lens in the optical train is increased. Laser diode astigmatism is affirmatively used to enhance visibility. What results is an aiming spot (or aiming scan line) at a farther plane (d6) that is more visible to the user than the scanning spot at a closer plane (d3), at which closer plane the scanner is able to read a bar code.

    摘要翻译： 激光二极管在扫描仪中发射的激光束的可见度增强，以便于将激光束瞄准要读取的符号。 光学列车中的孔径光阑沿着非扫描方向具有增加的尺寸。 光学系列中的聚焦透镜的放大率增加。 激光二极管散光被肯定地用于提高可视性。 在距离更靠近的平面（d3）的扫描点更为可见的目标点（或瞄准扫描线）的结果是比扫描仪更靠近平面（d3），扫描仪能够读取条 码。