公开(公告)号：US20080149723A1

公开(公告)日：2008-06-26

申请号：US11801747

申请日：2007-05-10

申请人： Xiaoxun Zhu ,  Yong Liu ,  Ka Man Au ,  Rui Hou ,  Hongpeng Yu ,  Xi Tao ,  Liang Liu ,  Wenhua Zhang ,  Anatoly Kotlarsky ,  Sankar Ghosh ,  Michael Schnee ,  Pasqual Spatafore ,  Thomas Amundsen ,  Sung Byun ,  Mark Schmidt ,  Garrett Russell ,  John Bonanno ,  C. Harry Knowles

发明人： Xiaoxun Zhu ,  Yong Liu ,  Ka Man Au ,  Rui Hou ,  Hongpeng Yu ,  Xi Tao ,  Liang Liu ,  Wenhua Zhang ,  Anatoly Kotlarsky ,  Sankar Ghosh ,  Michael Schnee ,  Pasqual Spatafore ,  Thomas Amundsen ,  Sung Byun ,  Mark Schmidt ,  Garrett Russell ,  John Bonanno ,  C. Harry Knowles

IPC分类号： G06K7/10

CPC分类号： G06K7/10851 ,  G06K7/10732 ,  G06K7/10881

摘要： A method of reading bar code symbols using a digital-imaging based code symbol reading system employing an event-driven multi-tier modular software architecture and supporting automatic operating system login and loading of a bar code symbol reading application.

摘要翻译： 一种使用基于数字成像的代码符号读取系统来读取条形码符号的方法，该系统采用事件驱动的多层模块化软件架构并支持自动操作系统登录和加载条形码符号读取应用。

公开(公告)号：US20080135620A1

公开(公告)日：2008-06-12

申请号：US11004502

申请日：2004-12-03

申请人： Xiaoxun Zhu ,  Yong Liu ,  Ka Man Au ,  Rui Hou ,  Hongpeng Yu ,  Xi Tao ,  Liang Liu ,  Wenhua Zhang ,  Anatoly Kotlarsky ,  Sankar Ghosh ,  Michael Schnee ,  Pasqual Spatafore ,  Thomas Amundsen ,  Sung Byun ,  Mark Schmidt ,  Garrett Russell ,  John Bonanno ,  C. Harry Knowles

发明人： Xiaoxun Zhu ,  Yong Liu ,  Ka Man Au ,  Rui Hou ,  Hongpeng Yu ,  Xi Tao ,  Liang Liu ,  Wenhua Zhang ,  Anatoly Kotlarsky ,  Sankar Ghosh ,  Michael Schnee ,  Pasqual Spatafore ,  Thomas Amundsen ,  Sung Byun ,  Mark Schmidt ,  Garrett Russell ,  John Bonanno ,  C. Harry Knowles

IPC分类号： G06K7/10

CPC分类号： G06F9/44526 ,  G06K7/10712 ,  G06K7/10732 ,  G06K7/10831 ,  G06K7/10851 ,  G06K7/10881 ,  G06K7/14 ,  G06K2207/1012

摘要： A method of reading bar code symbols comprising the steps of: (a) projecting an image cropping zone (ICZ) framing pattern within the FOV of an image sensing array during wide-area illumination and image capturing operation; (b) visually aligning an object to be imaged within the ICZ framing pattern; (c) forming and capturing an wide-area image of the entire FOV, which spatially encompasses the ICZ framing pattern aligned about the object to be imaged; (d) using automatic software-based image cropping algorithm to automatically crop the pixels within the spatial boundaries defined by the ICZ framing pattern, from those pixels contained in the entire wide-area image frame captured during step (c); and (e) automatically decode processing the image represented by the cropped image pixels in the ICZ framing pattern so as to read a 1D or 2D bar code symbol graphically represented therein.

摘要翻译： 一种读取条形码符号的方法，包括以下步骤：（a）在广域照明和图像捕获操作期间，在图像感测阵列的FOV内投影图像裁剪区域（ICZ）成帧模式; （b）在ICZ框架图案内目视对准要被成像的物体; （c）形成并捕获整个FOV的广域图像，其空间地包围围绕被成像对象排列的ICZ成帧模式; （d）使用自动的基于软件的图像裁剪算法，从步骤（c）中捕获的整个广域图像帧中包含的那些像素中自动裁剪由ICZ成帧模式定义的空间边界内的像素; 以及（e）自动解码处理由ICZ成帧图案中的裁剪图像像素表示的图像，以便读取其中图形表示的1D或2D条形码符号。

公开(公告)号：US07325738B2

公开(公告)日：2008-02-05

申请号：US10901914

申请日：2004-07-29

申请人： Xiaoxun Zhu ,  Yong Liu ,  Ka Man Au ,  Rui Hou ,  Hongpeng Yu ,  Xi Tao ,  Liang Liu ,  Wenhua Zhang ,  Anatoly Kotlarsky ,  Sankar Ghosh ,  Michael Schnee ,  Pasqual Spatafore ,  Thomas Amundsen ,  Sung Byun ,  Mark Schmidt ,  Garrett Russell ,  John Bonanno ,  C. Harry Knowles

发明人： Xiaoxun Zhu ,  Yong Liu ,  Ka Man Au ,  Rui Hou ,  Hongpeng Yu ,  Xi Tao ,  Liang Liu ,  Wenhua Zhang ,  Anatoly Kotlarsky ,  Sankar Ghosh ,  Michael Schnee ,  Pasqual Spatafore ,  Thomas Amundsen ,  Sung Byun ,  Mark Schmidt ,  Garrett Russell ,  John Bonanno ,  C. Harry Knowles

IPC分类号： G02B26/08

CPC分类号： G06K7/10851 ,  G06K7/10732 ,  G06K7/10881

摘要： A method of determining the lower limit of decoding resolution in a digital imaging-based bar code symbol reader. A software-based optical design program is used to generate the composite DOF chart of image formation optics employed in the digital imaging-based bar code symbol reader. The modulation transfer function (MTF) of the object image is used to determine the smallest mil size code that can be decoded, at a given object distance, to produce an optical performance curve. The program calculates the size of the field of view (FOV) of a single sensor pixel, when projected through the image formation optics and out into object space. For both the 1.4 and 1.6 sampling limit pixel rules, the calculated FOV values are plotted on the same axes as the optical performance curve. Using graphical solution techniques, the sampling limit line of choice determines the lower limit of the decoding resolution in the imaging-based bar code symbol reader.

摘要翻译： 一种在基于数字成像的条形码符号读取器中确定解码分辨率的下限的方法。 基于软件的光学设计程序用于生成基于数字成像的条码符号读取器中采用的图像形成光学的复合自由度图。 使用对象图像的调制传递函数（MTF）来确定在给定对象距离处可解码的最小密度大小的代码以产生光学性能曲线。 当通过图像形成光学器件投射到对象空间中时，该程序计算单个传感器像素的视场（FOV）的大小。 对于1.4和1.6采样限制像素规则，计算的FOV值绘制在与光学性能曲线相同的轴上。 使用图形解决方案技术，选择的采样限制线决定了基于成像的条形码符号读取器中解码分辨率的下限。

公开(公告)号：US07255279B2

公开(公告)日：2007-08-14

申请号：US10903904

申请日：2004-07-30

申请人： Xiaoxun Zhu ,  Yong Liu ,  Ka Man Au ,  Rui Hou ,  Hongpeng Yu ,  Xi Tao ,  Liang Liu ,  Wenhua Zhang ,  Anatoly Kotlarsky ,  Sankar Ghosh ,  Michael Schnee ,  Pasqual Spatafore ,  Thomas Amundsen ,  Sung Byun ,  Mark Schmidt ,  Garrett Russell ,  John Bonanno ,  C. Harry Knowles

发明人： Xiaoxun Zhu ,  Yong Liu ,  Ka Man Au ,  Rui Hou ,  Hongpeng Yu ,  Xi Tao ,  Liang Liu ,  Wenhua Zhang ,  Anatoly Kotlarsky ,  Sankar Ghosh ,  Michael Schnee ,  Pasqual Spatafore ,  Thomas Amundsen ,  Sung Byun ,  Mark Schmidt ,  Garrett Russell ,  John Bonanno ,  C. Harry Knowles

IPC分类号： G02B26/08

CPC分类号： G06K7/10851 ,  G06K7/10732 ,  G06K7/10881

摘要： A hand-supportable digital imaging-based bar code symbol reading device comprises: image formation and detection subsystem; a LED-based illumination subsystem; an automatic light exposure measurement and illumination control subsystem; an image capturing and buffering subsystem; an image-processing bar code symbol reading subsystem; an input/output subsystem; and a system control subsystem for controlling the subsystems. During each image capture cycle, a single frame of pixel data is automatically detected by the CMOS area-type image sensing array when substantially all rows of pixels therein are in a state of integration and have a common integration time, and then the single frame of pixel data is transmitted from the CMOS area-type image sensing array into a FIFO buffer, and then mapped into memory, for subsequent image processing.

摘要翻译： 一种支持手持数字成像的条形码符号读取装置，包括：图像形成和检测子系统; 一个基于LED的照明子系统; 自动曝光测量和照明控制子系统; 图像捕获和缓冲子系统; 图像处理条码符号读取子系统; 输入/输出子系统; 以及用于控制子系统的系统控制子系统。 在每个图像捕获周期期间，当CMOS区域型图像感测阵列中的基本上所有像素行都处于积分状态并且具有公共积分时间时，单帧像素数据被自动检测，然后单帧 像素数据从CMOS区域型图像感测阵列发送到FIFO缓冲器中，然后映射到存储器中，用于随后的图像处理。

公开(公告)号：US20070158427A1

公开(公告)日：2007-07-12

申请号：US11605854

申请日：2006-11-29

申请人： Xiaoxun Zhu ,  Yong Liu ,  Ka Au ,  Rui Hou ,  Hongpeng Yu ,  Xi Tao ,  Liang Liu ,  Wenhua Zhang ,  Anatoly Kotlarsky ,  Sankar Ghosh ,  Michael Schnee ,  Pasqual Spatafore ,  Thomas Amundsen ,  Sung Byun ,  Mark Schmidt ,  Garrett Russell ,  John Bonanno ,  C. Knowles

发明人： Xiaoxun Zhu ,  Yong Liu ,  Ka Au ,  Rui Hou ,  Hongpeng Yu ,  Xi Tao ,  Liang Liu ,  Wenhua Zhang ,  Anatoly Kotlarsky ,  Sankar Ghosh ,  Michael Schnee ,  Pasqual Spatafore ,  Thomas Amundsen ,  Sung Byun ,  Mark Schmidt ,  Garrett Russell ,  John Bonanno ,  C. Knowles

IPC分类号： G06K7/10

CPC分类号： G06F9/44526 ,  G06K7/10712 ,  G06K7/10732 ,  G06K7/10831 ,  G06K7/10851 ,  G06K7/10881 ,  G06K7/14 ,  G06K2207/1012

摘要： A hand-supportable digital-imaging based system for reading bar code symbols involving: automatically detecting the presence of an object within a field of view FOV of the system, and in response thereto, automatically generating an image cropping zone (ICZ) framing pattern and projecting the ICZ framing pattern within the FOV and onto the detected object; visually aligning the code symbol on the detected object, within the ICZ framing pattern; manually actuating a trigger switch when the code symbol on the object is located within the ICZ framing pattern, and while the ICZ framing pattern and a field of illumination are being simultaneously projected onto the object during object illumination operations, forming and capturing a digital image of the code symbol on the detected object; automatically cropping the image pixels contained within the spatial boundaries of the ICZ framing pattern, from the pixels of the digital image; and decode processing the cropped image so as to read one or more 1D and/or 2D code symbols graphically represented therein.

摘要翻译： 一种用于读取条形码符号的手持式数字成像系统，包括：自动检测系统视场FOV内物体的存在，并响应于此，自动生成图像裁剪区（ICZ）成帧模式，以及 将所述ICV框架图案投射到所述被检测物体内; 在ICZ成帧模式内，目视对准检测对象上的代码符号; 当物体上的代码符号位于ICZ成帧模式内时，手动启动触发开关，并且当物体照明操作期间ICZ成帧模式和照明场同时投射到物体上时，形成和捕获数字图像 检测到的对象上的代码符号; 从数字图像的像素自动裁剪包含在ICZ成帧图案的空间边界内的图像像素; 并解码处理裁剪的图像，以便读取其中图形表示的一个或多个1D和/或2D代码符号。

公开(公告)号：US07237722B2

公开(公告)日：2007-07-03

申请号：US10897390

申请日：2004-07-22

申请人： Xiaoxun Zhu ,  Yong Liu ,  Ka Man Au ,  Rui Hou ,  Hongpeng Yu ,  Xi Tao ,  Liang Liu ,  Wenhua Zhang ,  Anatoly Kotlarsky ,  Sankar Ghosh ,  Michael Schnee ,  Pasqual Spatafore ,  Thomas Amundsen ,  Sung Byun ,  Mark Schmidt ,  Garrett Russell ,  John Bonanno ,  C. Harry Knowles

发明人： Xiaoxun Zhu ,  Yong Liu ,  Ka Man Au ,  Rui Hou ,  Hongpeng Yu ,  Xi Tao ,  Liang Liu ,  Wenhua Zhang ,  Anatoly Kotlarsky ,  Sankar Ghosh ,  Michael Schnee ,  Pasqual Spatafore ,  Thomas Amundsen ,  Sung Byun ,  Mark Schmidt ,  Garrett Russell ,  John Bonanno ,  C. Harry Knowles

IPC分类号： G06K7/10

CPC分类号： G06K7/10851 ,  G06K7/10732 ,  G06K7/10881

摘要： A hand-supportable digital imaging-based bar code symbol reading device comprises: an IR-based object presence and range detection subsystem; a multi-mode area-type image formation and detection subsystem having narrow-area and wide area image capture modes of operation; a multi-mode LED-based illumination subsystem having narrow-area and wide area illumination modes of operation; an automatic light exposure measurement and illumination control subsystem; an image capturing and buffering subsystem; a multi-mode image-processing bar code symbol reading subsystem; an input/output subsystem; a manually-activatable trigger switch; and a system control subsystem integrated with each of the above-described subsystems. The multi-mode image-processing based bar code reading subsystem has a modular image-processing architecture constructed from four major image processing modules, namely: a tracker module, a finder module, a marker module, and a decoder module. These image processing modules enable the multiple modes of operation of the multi-mode image-processing based bar code reading subsystem.

摘要翻译： 一种基于手持式数字成像的条形码符号读取装置，包括：基于IR的对象存在和范围检测子系统; 具有窄区域和广域图像捕捉操作模式的多模式区域型图像形成和检测子系统; 具有窄区域和广域照明操作模式的多模式的基于LED的照明子系统; 自动曝光测量和照明控制子系统; 图像捕获和缓冲子系统; 多模式图像处理条码符号读取子系统; 输入/输出子系统; 一个手动启动的触发开关; 以及与上述每个子系统集成的系统控制子系统。 基于多模式图像处理的条形码读取子系统具有由四个主要图像处理模块构成的模块化图像处理架构，即：跟踪器模块，取景器模块，标记模块和解码器模块。 这些图像处理模块能够实现基于多模式图像处理的条形码读取子系统的多种操作模式。

公开(公告)号：US07225988B2

公开(公告)日：2007-06-05

申请号：US10895811

申请日：2004-07-20

申请人： Xiaoxun Zhu ,  Yong Liu ,  Ka Man Au ,  Rui Hou ,  Hongpeng Yu ,  Xi Tao ,  Liang Liu ,  Wenhua Zhang ,  Anatoly Kotlarsky ,  Sankar Ghosh ,  Michael Schnee ,  Pasqual Spatafore ,  Thomas Amundsen ,  Sung Byun ,  Mark Schmidt ,  Garrett Russell ,  John Bonanno ,  C. Harry Knowles

发明人： Xiaoxun Zhu ,  Yong Liu ,  Ka Man Au ,  Rui Hou ,  Hongpeng Yu ,  Xi Tao ,  Liang Liu ,  Wenhua Zhang ,  Anatoly Kotlarsky ,  Sankar Ghosh ,  Michael Schnee ,  Pasqual Spatafore ,  Thomas Amundsen ,  Sung Byun ,  Mark Schmidt ,  Garrett Russell ,  John Bonanno ,  C. Harry Knowles

IPC分类号： G02B26/08

CPC分类号： G06K7/10851 ,  G06K7/10732 ,  G06K7/10881

摘要： A hand-supportable digital imaging-based bar code symbol reading device comprises: an ir-based object presence and range detection subsystem; a multi-mode area-type image formation and detection subsystem having a field of view (FOV) and narrow-area and wide area image capture modes of operation; a multi-mode LED-based illumination subsystem having narrow-area and wide area illumination modes of operation; an automatic light exposure measurement and illumination control subsystem; an image capturing and buffering subsystem; an image-processing bar code symbol reading subsystem; and a system control subsystem. The LED-based multi-mode illumination subsystem produces three different fields of LED-based illumination in automatic response to the detection of different conditions within the FOV, by the automatic object presence and range detection subsystem.

摘要翻译： 一种支持手持式数字成像的条形码符号读取装置，包括：基于ir的对象存在和范围检测子系统; 具有视场（FOV）的多模式区域型图像形成和检测子系统以及窄区域和广域图像捕获操作模式; 具有窄区域和广域照明操作模式的多模式的基于LED的照明子系统; 自动曝光测量和照明控制子系统; 图像捕获和缓冲子系统; 图像处理条码符号读取子系统; 和系统控制子系统。 基于LED的多模照明子系统通过自动对象存在和范围检测子系统，自动响应FOV内不同条件的检测，产生三种不同的基于LED的照明领域。

公开(公告)号：US07213762B2

公开(公告)日：2007-05-08

申请号：US10894412

申请日：2004-07-19

申请人： Xiaoxun Zhu ,  Yong Liu ,  Ka Man Au ,  Rui Hou ,  Hongpeng Yu ,  Xi Tao ,  Liang Liu ,  Wenhua Zhang ,  Anatoly Kotlarsky ,  Sankar Ghosh ,  Michael Schnee ,  Pasqual Spatafore ,  Thomas Amundsen ,  Sung Byun ,  Mark Schmidt ,  Garrett Russell ,  John Bonanno ,  C. Harry Knowles

发明人： Xiaoxun Zhu ,  Yong Liu ,  Ka Man Au ,  Rui Hou ,  Hongpeng Yu ,  Xi Tao ,  Liang Liu ,  Wenhua Zhang ,  Anatoly Kotlarsky ,  Sankar Ghosh ,  Michael Schnee ,  Pasqual Spatafore ,  Thomas Amundsen ,  Sung Byun ,  Mark Schmidt ,  Garrett Russell ,  John Bonanno ,  C. Harry Knowles

IPC分类号： G06K7/10

CPC分类号： G06K7/10851 ,  G06K7/10732 ,  G06K7/10881

摘要： A digital imaging-based bar code symbol reading system comprising: an area image formation and detection subsystem having a CMOS area image sensing array with an image capture mode; a LED-based illumination subsystem for producing narrow-band illumination; and a narrow-band transmission-type optical filter subsystem integrated within the hand-supportable housing of the device. During the image capture mode, and only when substantially all rows of pixels on the CMOS area image sensing array are enabled and simultaneously ready for photo-integration, the LED-based illumination subsystem is activated so as to produce narrow-band illumination into the FOV of the area image formation and detection subsystem while the automatic light exposure measurement and illumination control subsystem automatically measures the light exposure incident upon a central portion of the FOV, and controls the time duration that narrow-band illumination is produced from the LED-based illumination subsystem.

摘要翻译： 一种基于数字成像的条形码符号读取系统，包括：具有图像拍摄模式的CMOS区域图像感测阵列的区域图像形成和检测子系统; 用于生产窄带照明的基于LED的照明子系统; 以及集成在设备的手持式外壳内的窄带透射型光学滤波器子系统。 在图像拍摄模式期间，并且仅当CMOS区域图像感测阵列上的基本上所有像素行被启用并且同时准备用于光集成时，基于LED的照明子系统被激活，以便产生到FOV的窄带照明 的区域图像形成和检测子系统，而自动曝光测量和照明控制子系统自动测量入射在FOV的中心部分上的光照射，并且控制从基于LED的照明产生窄带照明的持续时间 子系统。

公开(公告)号：US07128266B2

公开(公告)日：2006-10-31

申请号：US10712787

申请日：2003-11-13

申请人： Xiaoxun Zhu ,  Yong Liu ,  Ka Man Au ,  Rui Hou ,  Hongpeng Yu ,  Xi Tao ,  Liang Liu ,  Wenhua Zhang ,  Anatoly Kotlarsky ,  Sankar Ghosh ,  Michael Schnee ,  Pasqual Spatafore ,  Thomas Amundsen ,  Sung Byun ,  Mark Schmidt ,  Garrett Russell ,  John Bonanno ,  C. Harry Knowles

发明人： Xiaoxun Zhu ,  Yong Liu ,  Ka Man Au ,  Rui Hou ,  Hongpeng Yu ,  Xi Tao ,  Liang Liu ,  Wenhua Zhang ,  Anatoly Kotlarsky ,  Sankar Ghosh ,  Michael Schnee ,  Pasqual Spatafore ,  Thomas Amundsen ,  Sung Byun ,  Mark Schmidt ,  Garrett Russell ,  John Bonanno ,  C. Harry Knowles

IPC分类号： G02B26/08

CPC分类号： G06K7/10851 ,  G06K7/10732 ,  G06K7/10881

摘要： A hand-supportable digital imaging-based bar code symbol reading device comprises: an ir-based object presence and range detection subsystem; a multi-mode area-type image formation and detection subsystem having narrow-area and wide area image capture modes of operation; a multi-mode LED-based illumination subsystem having narrow-area and wide area illumination modes of operation; an automatic light exposure measurement and illumination control subsystem; an image capturing and buffering subsystem; a multi-mode image-processing bar code symbol reading subsystem; an input/output subsystem; a manually-activatable trigger switch; a system mode configuration parameter table; and a system control subsystem integrated with each of the above-described subsystems. The digital imaging-based bar code reading device supports narrow-area and wide-area modes of illumination and image capture, and can be configured and operated in numerous programmable modes of system operation to automatically read 1D and 2D bar code symbologies in a high-speed manner.

摘要翻译： 一种支持手持式数字成像的条形码符号读取装置，包括：基于ir的对象存在和范围检测子系统; 具有窄区域和广域图像捕捉操作模式的多模式区域型图像形成和检测子系统; 具有窄区域和广域照明操作模式的多模式的基于LED的照明子系统; 自动曝光测量和照明控制子系统; 图像捕获和缓冲子系统; 多模式图像处理条码符号读取子系统; 输入/输出子系统; 一个手动启动的触发开关; 系统模式配置参数表; 以及与上述每个子系统集成的系统控制子系统。 基于数字成像的条形码读取装置支持窄区域和广域照明和图像捕获模式，并且可以在多种可编程的系统操作模式下进行配置和操作，以自动读取1D和2D条形码符号， 速度快。

公开(公告)号：US20050103867A1

公开(公告)日：2005-05-19

申请号：US10909270

申请日：2004-07-30

申请人： Xiaoxun Zhu ,  Yong Liu ,  Ka Au ,  Rui Hou ,  Hongpeng Yu ,  Xi Tao ,  Liang Liu ,  Wenhua Zhang ,  Anatoly Kotlarsky ,  Sankar Ghosh ,  Michael Schnee ,  Pasqual Spatafore ,  Thomas Amundsen ,  Sung Byun ,  Mark Schmidt ,  Garrett Russell ,  John Bonanno ,  C. Knowles

发明人： Xiaoxun Zhu ,  Yong Liu ,  Ka Au ,  Rui Hou ,  Hongpeng Yu ,  Xi Tao ,  Liang Liu ,  Wenhua Zhang ,  Anatoly Kotlarsky ,  Sankar Ghosh ,  Michael Schnee ,  Pasqual Spatafore ,  Thomas Amundsen ,  Sung Byun ,  Mark Schmidt ,  Garrett Russell ,  John Bonanno ,  C. Knowles

IPC分类号： G06K7/10 ,  G06K9/22

CPC分类号： G06K7/10851 ,  G06K7/10732 ,  G06K7/10881

摘要： A hand-supportable semi-automatic digital imaging-based bar code symbol reading system comprises: an automatic object presence detection subsystem; a multi-mode image formation and detection subsystem having narrow-area and wide area image capture modes of operation; a multi-mode LED-based illumination subsystem having narrow-area and wide area illumination modes of operation; an automatic light exposure measurement and illumination control subsystem; an image capturing and buffering subsystem; a multi-mode image-processing bar code symbol reading subsystem; an input/output subsystem; a manually-actuatable trigger switch; and a system control subsystem for controlling the subsystems. The digital imaging-based bar code reading system employs a three-tier modular software architecture for carrying out its image-processing based bar code symbol reading operations. The three-tier software architecture comprises an application layer, a system core layer, and an operating system (OS) layer.

摘要翻译： 一种支持手持式半自动数字成像的条形码符号读取系统，包括：自动对象存在检测子系统; 具有窄区域和广域图像捕捉模式的多模式图像形成和检测子系统; 具有窄区域和广域照明操作模式的多模式的基于LED的照明子系统; 自动曝光测量和照明控制子系统; 图像捕获和缓冲子系统; 多模式图像处理条码符号读取子系统; 输入/输出子系统; 手动触发开关; 以及用于控制子系统的系统控制子系统。 基于数字成像的条形码读取系统采用三层模块化软件架构来进行基于图像处理的条形码符号读取操作。 三层软件架构包括应用层，系统核心层和操作系统（OS）层。