Imaging-based bar code reader with rotated photosensor array
    21.
    发明申请
    Imaging-based bar code reader with rotated photosensor array 审中-公开
    基于成像的条形码阅读器与旋转的光电传感器阵列

    公开(公告)号:US20070228176A1

    公开(公告)日:2007-10-04

    申请号:US11395638

    申请日:2006-03-31

    IPC分类号: G06K7/10

    CPC分类号: G06K7/10722 G06K7/10851

    摘要: An imaging based bar code reader for imaging and decoding a target bar code. The reader features a housing including a scanning head defining a horizontal axis and an imaging system supported by the housing for imaging the target bar code. The imaging system including a 2D sensor array and focusing optics receiving reflected illumination from the target bar code through the window and focusing the reflected illumination onto the sensor array. The sensor array includes an orthogonal array of pixels and defines a horizontal axis. The reader further features a decoding system for decoding an image of the target bar code. The sensor array is oriented such that the horizontal axis of the sensor array is at an acute angle with respect to the horizontal axis of the target bar code when the target bar code is being presented to the scanning head such that the horizontal axis of the target bar code is substantially parallel to the horizontal axis of the scanning head.

    摘要翻译: 一种基于成像的条形码读取器,用于对目标条形码进行成像和解码。 读卡器具有包括限定水平轴的扫描头的壳体和由壳体支撑的用于成像目标条形码的成像系统。 成像系统包括2D传感器阵列和聚焦光学器件,其通过窗口接收来自目标条形码的反射照明,并将反射照明聚焦到传感器阵列上。 传感器阵列包括像素的正交阵列并且限定水平轴。 读取器还具有用于解码目标条形码图像的解码系统。 传感器阵列被定向成使得当目标条形码被呈现给扫描头时,传感器阵列的水平轴线相对于目标条形码的水平轴线成锐角,使得目标物体的水平轴线 条形码基本上平行于扫描头的水平轴线。

    Gain control system and method for use in electro-optical readers
    29.
    发明申请
    Gain control system and method for use in electro-optical readers 有权
    增益控制系统和电光读取器的使用方法

    公开(公告)号:US20050236485A1

    公开(公告)日:2005-10-27

    申请号:US10832486

    申请日:2004-04-26

    IPC分类号: G06K7/10

    CPC分类号: G06K7/10851

    摘要: An intelligent gain selection circuit replaces the gain set by an automatic gain control circuit in an electro-optical reader for reading indicia, such as bar code symbols, with a larger gain where specular reflections, high contrast edges, or other noise operative to produce dominant high voltage peaks in an analog signal generated by a sensor in the reader, are detected.

    摘要翻译: 智能增益选择电路取代由电光读取器中的自动增益控制电路设置的增益,用于读取标记,例如条形码符号,具有更大的增益,其中镜面反射,高对比度边缘或其他噪声可以产生主导 检测由读取器中的传感器产生的模拟信号中的高电压峰值。