Method and apparatus for reading images without need for self-generated
illumination source
    1.
    发明授权
    Method and apparatus for reading images without need for self-generated illumination source 有权
    用于读取图像的方法和装置,不需要自发光源

    公开(公告)号:US06042012A

    公开(公告)日:2000-03-28

    申请号:US162350

    申请日:1998-09-28

    IPC分类号: G06K7/00 G06K7/10

    摘要: A method and apparatus for reading bar codes or other images while reducing or eliminating the need for self-generated illumination. An image reader is preferably embodied as a handheld unit and comprises an efficient optical collection system including an aperture with a high aspect ratio and/or a multi-focal lens or lenses. An optically transmissive spacer affixed to the front of the handheld unit allows ambient light to be collected at close range, and a diffuser may be used to reflect ambient light from the handheld unit to provide additional illumination at close range. A masked CCD detector with rectangular pixels receives collected light and is coupled to an adaptive exposure circuit for preventing saturation of the CCD detector at high illumination levels. A correlated double sampling circuit coupled to the adaptive exposure circuit rejects common mode noise and allows operation in lower light levels. The correlated double sampling circuit is connected to a signal processor which uses a derivative based technique for detecting edges of the image. A decoder uses the edge detection information to decode encoded information from the image.

    摘要翻译: 一种在减少或消除对自发光的需要的同时读取条形码或其他图像的方法和装置。 图像读取器优选地被实现为手持单元,并且包括具有高纵横比的孔和/或多焦点透镜或透镜的有效的光学收集系统。 固定在手持单元前部的光学透射间隔件允许在近距离范围内收集环境光,并且漫射器可用于反射来自手持单元的环境光,以在近距离范围内提供额外的照明。 具有矩形像素的屏蔽CCD检测器接收收集的光并且耦合到自适应曝光电路,以防止CCD检测器在高照明水平下的饱和。 耦合到自适应曝光电路的相关双采样电路拒绝共模噪声并且允许在较低的光级别下操作。 相关双采样电路连接到使用基于导数的技术来检测图像边缘的信号处理器。 解码器使用边缘检测信息来解码来自图像的编码信息。

    Multi-focus optical reader with masked or apodized lens
    3.
    发明授权
    Multi-focus optical reader with masked or apodized lens 有权
    带有蒙面或变形镜头的多焦光学读卡器

    公开(公告)号:US6073851A

    公开(公告)日:2000-06-13

    申请号:US162349

    申请日:1998-09-28

    IPC分类号: G06K7/00 G06K7/10

    摘要: A method and apparatus for reading bar codes or other images while reducing or eliminating the need for self-generated illumination. An image reader is preferably embodied as a handheld unit and comprises an efficient optical collection system including an aperture with a high aspect ratio and/or a multi-focal lens or lenses. An optically transmissive spacer affixed to the front of the handheld unit allows ambient light to be collected at close range, and a diffuser may be used to reflect ambient light from the handheld unit to provide additional illumination at close range. A masked CCD detector with rectangular pixels receives collected light and is coupled to an adaptive exposure circuit for preventing saturation of the CCD detector at high illumination levels. A correlated double sampling circuit coupled to the adaptive exposure circuit rejects common mode noise and allows operation in lower light levels. The correlated double sampling circuit is connected to a signal processor which uses a derivative based technique for detecting edges of the image. A decoder uses the edge detection information to decode encoded information from the image.

    摘要翻译: 一种在减少或消除对自发光的需要的同时读取条形码或其他图像的方法和装置。 图像读取器优选地被实现为手持单元,并且包括具有高纵横比的孔和/或多焦点透镜或透镜的有效的光学收集系统。 固定在手持单元前部的光学透射间隔件允许在近距离范围内收集环境光,并且漫射器可用于反射来自手持单元的环境光以在近距离范围内提供额外的照明。 具有矩形像素的屏蔽CCD检测器接收收集的光并且耦合到自适应曝光电路,以防止CCD检测器在高照明水平下的饱和。 耦合到自适应曝光电路的相关双采样电路拒绝共模噪声并且允许在较低的光级别下操作。 相关双采样电路连接到使用基于导数的技术来检测图像边缘的信号处理器。 解码器使用边缘检测信息来解码来自图像的编码信息。

    Image reader with multi-focus lens
    4.
    发明授权
    Image reader with multi-focus lens 失效
    具有多焦点镜头的图像读取器

    公开(公告)号:US5814803A

    公开(公告)日:1998-09-29

    申请号:US576203

    申请日:1995-12-21

    IPC分类号: G06K7/00 G06K7/10

    摘要: A method and apparatus for reading bar codes or other images while reducing or eliminating the need for self-generated illumination. An image reader is preferably embodied as a handheld unit and comprises an efficient optical collection system including an aperture with a high aspect ratio and/or a multi-focal lens or lenses. An optically transmissive spacer affixed to the front of the handheld unit allows ambient light to be collected at close range, and a diffuser may be used to reflect ambient light from the handheld unit to provide additional illumination at close range. A masked CCD detector with rectangular pixels receives collected light and is coupled to an adaptive exposure circuit for preventing saturation of the CCD detector at high illumination levels. A correlated double sampling circuit coupled to the adaptive exposure circuit rejects common mode noise and allows operation in lower light levels. The correlated double sampling circuit is connected to a signal processor which uses a derivative based technique for detecting edges of the image. A decoder uses the edge detection information to decode encoded information from the image.

    摘要翻译: 一种在减少或消除对自发光的需要的同时读取条形码或其他图像的方法和装置。 图像读取器优选地被实现为手持单元,并且包括具有高纵横比的孔和/或多焦点透镜或透镜的有效的光学收集系统。 固定在手持单元前部的光学透射间隔件允许在近距离范围内收集环境光,并且漫射器可用于反射来自手持单元的环境光以在近距离范围内提供额外的照明。 具有矩形像素的屏蔽CCD检测器接收收集的光并且耦合到自适应曝光电路,以防止CCD检测器在高照明水平下的饱和。 耦合到自适应曝光电路的相关双采样电路拒绝共模噪声并且允许在较低的光级别下操作。 相关双采样电路连接到使用基于导数的技术来检测图像边缘的信号处理器。 解码器使用边缘检测信息来解码来自图像的编码信息。

    Information gathering and decoding apparatus and method of use
    7.
    发明授权
    Information gathering and decoding apparatus and method of use 有权
    信息采集与解码装置及使用方法

    公开(公告)号:US09569763B2

    公开(公告)日:2017-02-14

    申请号:US12488267

    申请日:2009-06-19

    IPC分类号: G06G1/12 G06Q20/20

    CPC分类号: G06Q20/20 G06Q20/202

    摘要: An information gathering and decoding apparatus includes two information gathering devices that communicate with one another, preferably wirelessly. The two information gathering devices may be used substantially simultaneously to process one, or multiple, customer orders. Customer order information is sent from one information gathering device to the other, and only one of the information gathering devices communicates with a computer system to send information from both of the information gathering devices to the computer system as if the information originated from the one information gathering device. Communication between the two information gathering devices combined with a microprocessor in at least one of the information gathering devices may allow the information gathering and decoding apparatus to be used with existing computer systems, such as point of sale systems, preferably without modifying the computer system. One information gathering device may pre-qualify customers to purchase restricted items. The second information gathering device may access the pre-qualification from the first information gathering device to process sales of restricted items to customers.

    摘要翻译: 信息收集和解码装置包括彼此通信的两个信息采集装置,优选地是无线的。 两个信息收集装置可以基本上同时用于处理一个或多个客户订单。 客户订单信息从一个信息收集装置发送到另一个信息收集装置,并且只有一个信息收集装置与计算机系统进行通信,以将信息从信息收集装置两者发送到计算机系统,就好像信息源于一个信息 收集装置。 与至少一个信息收集装置中的微处理器组合的两个信息收集装置之间的通信可以允许信息收集和解码装置与诸如销售点系统的现有计算机系统一起使用,优选地不改变计算机系统。 一个信息收集设备可以预先限定客户购买受限制的物品。 第二信息收集装置可以从第一信息收集装置访问资格预审,以处理对客户的限制物品的销售。

    Multiple plane scanning system for data reading applications
    9.
    发明授权
    Multiple plane scanning system for data reading applications 失效
    用于数据读取应用的多平面扫描系统

    公开(公告)号:US07198195B2

    公开(公告)日:2007-04-03

    申请号:US11341071

    申请日:2006-01-27

    IPC分类号: G06K7/10

    摘要: An optical system and method for data reading. A preferred system is directed to a scanner which includes a laser diode and a beam splitter for generating first optical beam and a second optical beam, the first optical beam being directed toward one side of a scanning optical element such as a rotating polygon mirror and to a first mirror array, the second optical beam being simultaneously directed toward a second optical element such as another side of the rotating polygon mirror and then to a second and a third mirror array. The first mirror array is configured to generate a scan pattern through a vertical window and the second and third mirror arrays are configured to generate scan patterns passing through a horizontal window. In combination, the three mirror arrays generate three sets of scan lines so as to scan five sides of a six-sided item (e.g., the bottom and all lateral sides of an object) being passed through the scan volume.

    摘要翻译: 一种用于数据读取的光学系统和方法。 优选的系统涉及一种扫描器,其包括激光二极管和用于产生第一光束的分束器和第二光束,第一光束被引向扫描光学元件的一侧,例如旋转多面镜,并且 第一反射镜阵列,第二光束同时指向第二光学元件,例如旋转多面镜的另一侧,然后到第二和第三反射镜阵列。 第一镜阵列被配置为通过垂直窗口生成扫描图案,并且第二和第三反射镜阵列被配置为生成穿过水平窗口的扫描图案。 组合在一起,三个反射镜阵列产生三组扫描线,以扫描通过扫描体积的六面物体(例如,物体的底部和所有侧面)的五边。

    Multi-format bar code reader
    10.
    发明授权

    公开(公告)号:US07137555B2

    公开(公告)日:2006-11-21

    申请号:US10247278

    申请日:2002-09-18

    IPC分类号: G06K7/10

    摘要: A method and apparatus is disclosed for selectively reading a barcode, symbol, or other indicia by either scanning the barcode with a flying-spot scan, or by imaging the barcode, thereby improving reading performance by tailoring the reading method to the particular item that is being read. Both a flying-spot laser scanning front end and an imaging front end are incorporated in a single device. Data obtained by the selected reading method is decoded and output. A common decoder or separate decoders may be used to decode the data from the two front ends. A single image sensor may be shared between the flying-spot front end and the imaging front-end, with a limited readout area utilized for laser scanning. The size of the readout area may be adjusted based on detected target proximity. Selection of the reading mode may be based on criteria including manual input, the range of the target, or previous failed attempts to read the barcode using either reading method. An integrated data reader in a console configuration may include a window having a special area in the corner or elsewhere for collecting data by presentation to the imaging front-end, with the flying-spot front end, with its larger depth of field, being utilized for general scanning through the window.