公开(公告)号：WO2005086071A2

公开(公告)日：2005-09-15

申请号：PCT/US2005006045

申请日：2005-02-28

Applicant: SYMBOL TECHNOLOGIES INC ,  HE DUANFENG ,  JOSEPH EUGENE B

Inventor： HE DUANFENG ,  JOSEPH EUGENE B

IPC: F21V8/00 ,  G02F1/00 ,  G06K7/10 ,  G06K7/00

CPC classification number: G06K7/10732

Abstract: An optical code reading system and method is provided for reading optical codes imprinted on reflective surfaces. The system includes a plurality of light sources, an image sensor, a processor and a decoder. The plurality of light sources includes extended light sources and direct point light sources directed 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 image. The processor analyzes the image and determines the code-type of the image. The data is then decoded by a decoder.

Abstract translation: 提供用于读取印在反射表面上的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，图像传感器，处理器和解码器。 多个光源包括扩展光源和指向照射光学代码的直接点光源，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图像。 处理器分析图像并确定图像的代码类型。 数据然后由解码器解码。

公开(公告)号：WO2007111761A2

公开(公告)日：2007-10-04

申请号：PCT/US2007000511

申请日：2007-01-09

Applicant: SYMBOL TECHNOLOGIES INC ,  JOSEPH EUGENE B ,  CARLSON BRADLEY S

Inventor： JOSEPH EUGENE B ,  CARLSON BRADLEY S

IPC: G06K7/10 ,  G06K9/24

CPC classification number: G06K7/10722 ,  G06K7/10752

Abstract: 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.

Abstract translation: 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。