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1. 发明授权

US07364081B2 Method and apparatus for reading under sampled bar code symbols 有权
标题翻译：在采样条形码符号下读取的方法和装置
公开(公告)号：US07364081B2
公开(公告)日：2008-04-29
申请号：US11001776
申请日：2004-12-02
申请人： William H. Havens , Andrew Longacre, Jr. , Dennis W. McEnery , Thomas Hawley , Ynjiun Wang
发明人： William H. Havens , Andrew Longacre, Jr. , Dennis W. McEnery , Thomas Hawley , Ynjiun Wang
IPC分类号： G06K7/10 , G06K9/36 , G06K9/80 , G06K15/12
CPC分类号： G06K7/1491 , G06K7/14 , G06K7/1465
摘要： The present invention is directed to a method for reading a bar code symbol with an optical reader. The method includes the step of scanning the bar code symbol to obtain a plurality of scan lines. Each of the plurality of scan lines includes a linear array of N-pixel values. Adjacent pixels in the linear array of N-pixel values are separated by a sample separation distance. A reconstructed scan line is generated that interleaves the N-pixel values from selected scan lines of the plurality of scan lines. A reconstructed pixel sample separation distance of adjacent interleaved pixels is an integer fraction of the pixel sample separation distance.
摘要翻译：本发明涉及一种用光学阅读器读取条形码符号的方法。该方法包括扫描条形码符号以获得多条扫描线的步骤。多个扫描线中的每一条都包括N个像素值的线性阵列。将N个像素值的线性阵列中的相邻像素分隔开一个样本间隔距离。生成重构的扫描线，其从多条扫描线的选定扫描线交织N个像素值。相邻交错像素的重建像素样本分离距离是像素样本间隔距离的整数分数。

2. 发明授权

US5949054A Bar code reader for reading high to low contrast bar code symbols 失效
标题翻译：用于读取高对比度条形码符号的条形码阅读器
公开(公告)号：US5949054A
公开(公告)日：1999-09-07
申请号：US546588
申请日：1995-10-23
申请人： Thomas W. Karpen , William H. Havens , Dennis W. McEnery , Brian L. Jovanovski
发明人： Thomas W. Karpen , William H. Havens , Dennis W. McEnery , Brian L. Jovanovski
IPC分类号： G06K7/10 , G06K7/14
CPC分类号： G06K7/10851 , G06K7/14 , G06K7/1478
摘要： A bar code reader is provided which can read bar code symbols of varying contrast, from high to medium to low contrast. The bar code reader includes a digitizing circuit which digitizes an analog signal representing the reflectance function of a scanned bar code by comparing the analog signal to a threshold signal. In the present invention, the threshold signal is switchable between a first state wherein the threshold signal is a standard threshold signal suitable for digitizing analog signals representing medium to high contrast bar code symbols and a second state wherein the threshold signal is a non-standard threshold signal suitable for digitizing analog signals representing low contrast bar code symbols. In one embodiment of the invention, the threshold signal is manually adjustable. In another embodiment, a bar code reader is provided which automatically digitizes and decodes bar code symbols of varying contrast by repetitively scanning bar code symbols, using first and second alternating threshold signal states to digitize the analog signal resulting from each scan.
摘要翻译：提供了条形码阅读器，可以读取从高到中至低对比度的不同对比度的条形码符号。条形码读取器包括数字化电路，其通过将模拟信号与阈值信号进行比较来数字化表示扫描条形码的反射函数的模拟信号。在本发明中，阈值信号可以在第一状态和第二状态之间切换，第一状态是阈值信号是适合于对表示中高对比度条形码符号的模拟信号进行数字化的标准阈值信号，以及第二状态，其中阈值信号是非标准阈值信号适合于数字化表示低对比度条形码符号的模拟信号。在本发明的一个实施例中，阈值信号是可手动调节的。在另一个实施例中，提供了一种条形码读取器，其通过使用第一和第二交替阈值信号状态来重复扫描条形码符号来自动数字化和解码变化对比度的条形码符号，以对由每次扫描得到的模拟信号进行数字化。

3. 发明授权

US5831254A Exposure control apparatus for use with optical readers 失效
标题翻译：用于光学读取器的曝光控制装置
公开(公告)号：US5831254A
公开(公告)日：1998-11-03
申请号：US574386
申请日：1995-12-18
申请人： Thomas W. Karpen , Dennis W. McEnery , Robert C. Gardiner , John A. Pettinelli
发明人： Thomas W. Karpen , Dennis W. McEnery , Robert C. Gardiner , John A. Pettinelli
IPC分类号： G06K7/10
CPC分类号： G06K7/10851 , G06K7/10584 , G06K7/10752
摘要： An exposure control apparatus for use with optical readers, such as bar code readers, which utilize photosensitive image sensors. An illumination signal generating circuit generates an illumination signal having a magnitude that varies in accordance with the time averaged value of the illumination level at the image sensor. A window detecting circuit periodically samples the illumination signal to determine if that signal is or is not within a window of acceptability. Exposure period determining circuitry uses the output of the window detecting circuit to upwardly or downwardly adjust the value of a control variable as necessary to cause the illumination signal to approach, enter and remain within the window of acceptability.
摘要翻译：一种用于光学读取器的曝光控制装置，例如利用光敏图像传感器的条形码阅读器。照明信号发生电路产生具有根据图像传感器的照度级的时间平均值变化的幅度的照明信号。窗口检测电路周期性地对照明信号进行采样，以确定该信号是否在不可接受的窗口内。曝光周期确定电路使用窗口检测电路的输出来向上或向下调整控制变量的值，以使照明信号接近，进入并保持在可接受窗口内。

4. 发明授权

US6152371A Method and apparatus for decoding bar code symbols 失效
标题翻译：用于解码条形码符号的方法和装置
公开(公告)号：US6152371A
公开(公告)日：2000-11-28
申请号：US133083
申请日：1998-08-12
申请人： Eric D. Schwartz , Vivian L. Hunter , Dennis W. McEnery , James L. Canale
发明人： Eric D. Schwartz , Vivian L. Hunter , Dennis W. McEnery , James L. Canale
IPC分类号： G06K7/10 , G06K7/14 , G06K9/22
CPC分类号： G06K7/10851 , G06K7/14
摘要： A method and apparatus for reading and decoding one-dimensional (1D) bar code symbols. A 1D bar code symbol is imaged by an optical assembly which includes a cubic phase mask that causes the optical transfer function of the optical assembly to remain approximately constant over a range of distances between the apparatus and the symbol to be read. An electrical representation of the resulting image is converted to a smoothly varying analog image signal. A transition identifying circuit processes the analog image signal, without first applying a recovery function that takes into account the effect of the phase mask, and generates a binary signal which is used to decode the symbol.
摘要翻译：一维（1D）条形码符号的读取和解码方法和装置。 1D条形码符号由包括立体相掩模的光学组件成像，所述三次相位掩模使光学组件的光学传递函数在装置和要读取的符号之间的距离范围内保持大致恒定。所得到的图像的电表示被转换成平滑变化的模拟图像信号。转换识别电路处理模拟图像信号，而不首先应用考虑到相位掩模的影响的恢复功能，并且生成用于对符号进行解码的二进制信号。

5. 发明申请

US20090109431A1 VISUAL INSPECTION APPARATUS HAVING LIGHT SOURCE BANK 有权
标题翻译：具有光源银行的视觉检查装置
公开(公告)号：US20090109431A1
公开(公告)日：2009-04-30
申请号：US11925090
申请日：2007-10-26
申请人： James J. Delmonico , Marjorie L. Buerkle , Thomas W. Karpen , Joseph V. Lopez , Joshua Lynn Scott , Dennis W. McEnery
发明人： James J. Delmonico , Marjorie L. Buerkle , Thomas W. Karpen , Joseph V. Lopez , Joshua Lynn Scott , Dennis W. McEnery
IPC分类号： G01N21/00
CPC分类号： G02B23/2453 , G01N21/8803 , G01N21/954 , G02B7/008 , H04N2005/2255
摘要： A visual inspection apparatus can include a handset, elongated inspection tube extending from the handset and a light source bank disposed within a hand held housing of the handset. For reduction of heat energy radiating from the light source bank, the apparatus can include one or more of a thermal control system and a particularly designed heat sink assembly.
摘要翻译：视觉检查装置可以包括手机，从手机延伸的细长检查管和设置在手持机的手持外壳内的光源组。为了减少从光源组辐射的热能，该装置可以包括热控制系统和特别设计的散热器组件中的一个或多个。

6. 发明授权

US08310604B2 Visual inspection apparatus having light source bank 有权
标题翻译：具有光源库的目视检查装置
公开(公告)号：US08310604B2
公开(公告)日：2012-11-13
申请号：US11925090
申请日：2007-10-26
申请人： James J. Delmonico , Marjorie L. Buerkle , Thomas W. Karpen , Joseph V. Lopez , Joshua Lynn Scott , Dennis W. McEnery
发明人： James J. Delmonico , Marjorie L. Buerkle , Thomas W. Karpen , Joseph V. Lopez , Joshua Lynn Scott , Dennis W. McEnery
IPC分类号： A61B1/04 , H04N5/74
CPC分类号： G02B23/2453 , G01N21/8803 , G01N21/954 , G02B7/008 , H04N2005/2255
摘要： A visual inspection apparatus can include a handset, elongated inspection tube extending from the handset and a light source bank disposed within a hand held housing of the handset. For reduction of heat energy radiating from the light source bank, the apparatus can include one or more of a thermal control system and a particularly designed heat sink assembly.
摘要翻译：视觉检查装置可以包括手机，从手机延伸的细长检查管和设置在手持机的手持外壳内的光源组。为了减少从光源组辐射的热能，该装置可以包括热控制系统和特别设计的散热器组件中的一个或多个。

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