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    • 4. 发明申请
    • SYSTEM AND METHOD FOR READING AND DECODING OPTICAL CODES USING MULTIPLE COLOR ILLUMINATION
    • 使用多个彩色照明来读取和解码光学代码的系统和方法
    • WO2005008565A1
    • 2005-01-27
    • PCT/US2004/023172
    • 2004-07-16
    • SYMBOL TECHNOLOGIES, INC.CARLSON, Bradley, S.
    • CARLSON, Bradley, S.
    • G06K7/10
    • G06K7/10851G06K7/10732
    • An optical code reading system and method are provided for reading and decoding an optical code. The system includes a plurality of light sources, a color image sensor, a processor and a decoder. Each light source produces a unique wavelength/color of light to illuminate the optical code, such as a direct mark optical code. The image sensor detects the reflected light from the optical code and generates an integrated multi-colored image. The processor separates the integrated image into individual color channels, where each color channel includes data representative of the imaged optical code in one color. The processor analyzes the contrast for each color channel and determines which color channel has the optimum contrast. The data corresponding to the color channel having the optimum contrast is then decoded by a decoder.
    • 提供了用于读取和解码光学代码的光学代码读取系统和方法。 该系统包括多个光源,彩色图像传感器,处理器和解码器。 每个光源产生独特的波长/颜色的光以照亮光学代码,例如直接标记光学代码。 图像传感器检测来自光学代码的反射光并生成整合的多色图像。 处理器将整合图像分成单独的颜色通道,其中每个颜色通道包括表示一种颜色的成像光学代码的数据。 处理器分析每个颜色通道的对比度并确定哪个颜色通道具有最佳对比度。 对应于具有最佳对比度的颜色通道的数据然后由解码器解码。
    • 6. 发明申请
    • IMAGING BAR CODE READER WITH ILLUMINATION CONTROL SYSTEM
    • 成像条码读码器与照明控制系统
    • WO2009067345A1
    • 2009-05-28
    • PCT/US2008/082964
    • 2008-11-10
    • SYMBOL TECHNOLOGIES, INC.GIEBEL, James R.SACKETT, WilliamCARLSON, Bradley S.
    • GIEBEL, James R.SACKETT, WilliamCARLSON, Bradley S.
    • G06K9/00
    • G06K7/10722
    • The disclosed bar code reader includes an auto-focusing component for rapidly producing in focus images. An imaging system makes use of an aiming pattern that impinges upon the coded indicia of a target. The imaging system includes a light monitoring pixel array and a focusing lens that is fixed with respect to the pixel array for transmitting an image of the target object onto the pixel array. The bar code reader also includes an illumination system comprising one or more light emitting diodes for illuminating the target within a field of view defined by the optical system. A drive circuit coupled to the light emitting diodes of the illumination system including at least one energy storage capacitor for providing an electrical pulse that illuminates the target. A controller selectively energizes the light emitting diodes by discharging the at least one capacitor of the drive circuit.
    • 所公开的条形码读取器包括用于快速产生聚焦图像的自动聚焦部件。 成像系统利用撞击目标的编码标记的瞄准图案。 成像系统包括光监测像素阵列和相对于像素阵列固定的聚焦透镜,用于将目标物体的图像传送到像素阵列上。 条形码阅读器还包括一个照明系统,该照明系统包括一个或多个发光二极管,用于在由光学系统限定的视野内照射目标。 耦合到照明系统的发光二极管的驱动电路,其包括用于提供照亮目标的电脉冲的至少一个储能电容器。 控制器通过对驱动电路的至少一个电容器进行放电来选择性地激励发光二极管。
    • 8. 发明申请
    • AUTOMATIC EXPOSURE SYSTEM FOR IMAGING-BASED BAR CODE READER
    • 基于成像条形码读取器的自动曝光系统
    • WO2007111761A2
    • 2007-10-04
    • PCT/US2007000511
    • 2007-01-09
    • SYMBOL TECHNOLOGIES INCJOSEPH EUGENE BCARLSON BRADLEY S
    • JOSEPH EUGENE BCARLSON BRADLEY S
    • G06K7/10G06K9/24
    • G06K7/10722G06K7/10752
    • An automatic exposure system for an imaging-based bar code reader. The automatic identification system includes: an aiming apparatus generating a beam to aid in aiming the system at a target object when the system is actuated; an imaging system including a pixel array, a focusing lens to focus an image of the target object onto the pixel array; and an automatic exposure system to determine an integration time for capturing an image of the target object. The automatic exposure system, determines an integration time by: projecting an aiming pattern on the target object and capturing an image of the aiming pattern; determining a target distance from the imaging system to the target object based on a location of the aiming pattern within the captured image; determining a gain-integration time product utilizing an equation wherein the gain-integration time product is a function of a predetermined target image brightness and the target distance; and determining the integration time by selecting a gain value and solving for integration time given the gain-integration time product.
    • 一种基于成像的条码阅读器的自动曝光系统。 所述自动识别系统包括:瞄准装置,当所述系统被致动时,产生光束以帮助将所述系统瞄准目标物体; 包括像素阵列的成像系统,将所述目标物体的图像聚焦到所述像素阵列上的聚焦透镜; 以及自动曝光系统,以确定用于捕获目标对象的图像的积分时间。 自动曝光系统通过以下方式确定积分时间:将瞄准图案投影到目标物体上并捕获瞄准图案的图像; 基于所述捕获图像内的所述瞄准图案的位置,确定从所述成像系统到所述目标对象的目标距离; 使用其中所述增益积分时间乘积是预定目标图像亮度和所述目标距离的函数的方程来确定增益积分时间乘积; 以及通过选择增益值并给出增益积分时间乘积的求积分时间来确定积分时间。