公开(公告)号：US6126074A

公开(公告)日：2000-10-03

申请号：US14482

申请日：1998-01-28

申请人： Duanfeng He ,  Kevin Hunter ,  Sundeep Kumar

发明人： Duanfeng He ,  Kevin Hunter ,  Sundeep Kumar

IPC分类号： G06K7/14 ,  G06K7/10

CPC分类号： G06K7/1473 ,  G06K7/14

摘要： A data encoding/decoding scheme includes a plurality of bar code symbols each carrying a portion of the data in which improved error correction capabilities are incorporated. According to one aspect, once data codewords have been derived to form the symbols, a first set of data correction elements are derived from a first field, then a second set of error correction elements are derived from the data elements and the first set of error correction elements using a second, wider field.

公开(公告)号：US06651893B2

公开(公告)日：2003-11-25

申请号：US09468185

申请日：1999-12-21

申请人： Duanfeng He ,  Kevin Hunter ,  Steven J. Shellhammer ,  Sundeep Kumar

发明人： Duanfeng He ,  Kevin Hunter ,  Steven J. Shellhammer ,  Sundeep Kumar

IPC分类号： G06K1906

CPC分类号： G06K7/1473 ,  G06K7/14

摘要： A data encoding/decoding scheme includes a plurality of bar code symbols each carrying a portion of the data in which improved error correction capabilities are incorporated. According to one aspect, once data codewords have been derived to form the symbols, a first set of data correction elements are derived from a first field, then a second set of error correction elements are derived from the data elements and the first set of error correction elements using a second, wider field.

摘要翻译： 数据编码/解码方案包括多个条形码符号，每个条形码符号携带改进的纠错能力的一部分数据。 根据一个方面，一旦数据码字被导出以形成符号，则从第一场导出第一组数据校正元件，然后从数据元素导出第二组误差校正元件，并从第一组误差 校正元件使用第二个较宽的场。

公开(公告)号：US20050098633A1

公开(公告)日：2005-05-12

申请号：US10837911

申请日：2004-05-03

申请人： Paul Poloniewicz ,  Mehul Patel ,  Sundeep Kumar ,  Joseph Cai ,  Duanfeng He

发明人： Paul Poloniewicz ,  Mehul Patel ,  Sundeep Kumar ,  Joseph Cai ,  Duanfeng He

IPC分类号： G06K7/10

CPC分类号： G07G1/0054 ,  G06K7/10722 ,  G06K7/10732

摘要： A bar code scanning system and method for reading and processing bar code symbology uses a scanning station installed above the check-out stand and a receiving station at some distance away from the scanning station. The scanning station projects light onto a surface of the check-out stand. The projected light can have a well defined border indicating where a user should place items to be scanned. Alternatively, a pattern coincident with the projected light can be projected onto the surface and which includes a target indicating where items should be placed for scanning. Light reflected by items in the target region is processed to decode optical symbology on the item and produce a signal that is representative of said sensed symbology. Information about the scanned item can be processed and displayed by the receiving station for use in, e.g., a point-of-sale transaction. The system can also be configured to capture images of a user's payment card for use in payment processing and to store images of at least selected scanned items for use in subsequent processes.

摘要翻译： 条形码扫描系统和读取和处理条形码符号系统的方法使用安装在退房台上方的扫描台和距离扫描站一定距离的接收站。 扫描台将光投射到退房台的表面上。 投影光可以有一个明确定义的边界，指示用户应该放置要扫描的物品的位置。 或者，与投影光一致的图案可以投影到表面上，并且其包括指示应该放置物品以进行扫描的目标。 处理由目标区域中的项目反射的光，以对该物品上的光学符号进行解码，并产生代表所述检测到的符号系统的信号。 关于被扫描物品的信息可以被接收站处理和显示，以用于例如销售点交易。 该系统还可以被配置为捕获用于用于支付处理的用户的支付卡的图像，并且存储用于后续处理的至少所选扫描项目的图像。

公开(公告)号：US07395970B2

公开(公告)日：2008-07-08

申请号：US10837911

申请日：2004-05-03

申请人： Paul Poloniewicz ,  Mehul Patel ,  Sundeep Kumar ,  Joseph Cai ,  Duanfeng He

发明人： Paul Poloniewicz ,  Mehul Patel ,  Sundeep Kumar ,  Joseph Cai ,  Duanfeng He

IPC分类号： G06K7/10

CPC分类号： G07G1/0054 ,  G06K7/10722 ,  G06K7/10732

摘要： A bar code scanning system and method for reading and processing bar code symbology uses a scanning station installed above the check-out stand and a receiving station at some distance away from the scanning station. The scanning station projects light onto a surface of the check-out stand. The projected light can have a well defined border indicating where a user should place items to be scanned. Alternatively, a pattern coincident with the projected light can be projected onto the surface and which includes a target indicating where items should be placed for scanning. Light reflected by items in the target region is processed to decode optical symbology on the item and produce a signal that is representative of said sensed symbology. Information about the scanned item can be processed and displayed by the receiving station for use in, e.g., a point-of-sale transaction. The system can also be configured to capture images of a user's payment card for use in payment processing and to store images of at least selected scanned items for use in subsequent processes.

摘要翻译： 条形码扫描系统和读取和处理条形码符号系统的方法使用安装在退房台上方的扫描台和距离扫描站一定距离的接收站。 扫描台将光投射到退房台的表面上。 投影光可以有一个明确定义的边界，指示用户应该放置要扫描的物品的位置。 或者，与投影光一致的图案可以投影到表面上，并且其包括指示应该放置物品以进行扫描的目标。 处理由目标区域中的项目反射的光，以对该物品上的光学符号进行解码，并产生代表所述检测到的符号系统的信号。 关于被扫描物品的信息可以被接收站处理和显示，以用于例如销售点交易。 该系统还可以被配置为捕获用于用于支付处理的用户的支付卡的图像，并且存储用于后续处理的至少所选扫描项目的图像。

公开(公告)号：US06234397B1

公开(公告)日：2001-05-22

申请号：US09594093

申请日：2000-06-15

申请人： Duanfeng He ,  Kevin Hunter ,  Eugene Joseph

发明人： Duanfeng He ,  Kevin Hunter ,  Eugene Joseph

IPC分类号： G06K1906

CPC分类号： G06K7/1443 ,  G06K7/14 ,  G06K7/1456

摘要： The disclosure relates to techniques for determining the presence, orientation and location of features in an image of a two dimensional optical code. The techniques are adapted for use in mapping data in an image pixel plane with grid locations in a grid-based two dimensional code to account for size, rotation, tilt, warping and distortion of the code symbol. Where such a code is a MaxiCode, techniques are disclosed for determining the presence and location of the MaxiCode bulls-eye, orientation modules, primary data modules and secondary data modules.

摘要翻译： 本公开涉及用于确定二维光学代码的图像中特征的存在，取向和位置的技术。 这些技术适用于在基于网格的二维码中的网格位置的图像像素平面中映射数据以考虑码符号的大小，旋转，倾斜，翘曲和失真。 在这样的代码是MaxiCode的情况下，公开了用于确定MaxiCode多眼睛，定向模块，主数据模块和辅助数据模块的存在和位置的技术。

公开(公告)号：US6088482A

公开(公告)日：2000-07-11

申请号：US176894

申请日：1998-10-22

申请人： Duanfeng He ,  Kevin Hunter ,  Eugene Joseph

发明人： Duanfeng He ,  Kevin Hunter ,  Eugene Joseph

IPC分类号： G06K7/14 ,  G06K9/46

CPC分类号： G06K7/1443 ,  G06K7/14 ,  G06K7/1456

摘要： The disclosure relates to techniques for determining the presence, orientation and location of features in an image of a two dimensional optical code. The techniques are adapted for use in mapping data in an image pixel plane with grid locations in a grid-based two dimensional code to account for size, rotation, tilt, warping and distortion of the code symbol. Where such a code is a MaxiCode, techniques are disclosed for determining the presence and location of the MaxiCode bulls-eye, orientation modules, primary data modules and secondary data modules.

摘要翻译： 本公开涉及用于确定二维光学代码的图像中特征的存在，取向和位置的技术。 这些技术适用于在基于网格的二维码中的网格位置的图像像素平面中映射数据以考虑码符号的大小，旋转，倾斜，翘曲和失真。 在这样的代码是MaxiCode的情况下，公开了用于确定MaxiCode多眼睛，定向模块，主数据模块和辅助数据模块的存在和位置的技术。

公开(公告)号：US06340119B2

公开(公告)日：2002-01-22

申请号：US09816173

申请日：2001-03-26

申请人： Duanfeng He ,  Kevin Hunter ,  Eugene Joseph

发明人： Duanfeng He ,  Kevin Hunter ,  Eugene Joseph

IPC分类号： G06K1906

CPC分类号： G06K7/1443 ,  G06K7/14 ,  G06K7/1456

摘要： The disclosure relates to techniques for determining the presence, orientation and location of features in an image of a two dimensional optical code. The techniques are adapted for use in mapping data in an image pixel plane with grid locations in a grid-based two dimensional code to account for size, rotation, tilt, warping and distortion of the code symbol. Where such a code is a MaxiCode, techniques are disclosed for determining the presence and location of the MaxiCode bulls-eye, orientation modules, primary data modules and secondary data modules.

摘要翻译： 本公开涉及用于确定二维光学代码的图像中特征的存在，取向和位置的技术。 这些技术适用于在基于网格的二维码中的网格位置的图像像素平面中映射数据以考虑码符号的大小，旋转，倾斜，翘曲和失真。 在这样的代码是MaxiCode的情况下，公开了用于确定MaxiCode多眼睛，定向模块，主数据模块和辅助数据模块的存在和位置的技术。

公开(公告)号：US08915442B2

公开(公告)日：2014-12-23

申请号：US12322134

申请日：2009-01-29

申请人： Joseph Cai ,  Duanfeng He ,  Dayou Wang ,  Michelle Wang

发明人： Joseph Cai ,  Duanfeng He ,  Dayou Wang ,  Michelle Wang

IPC分类号： G06K7/10 ,  G06K5/04 ,  G06K7/14

CPC分类号： G06K7/14 ,  G06K7/1491

摘要： An arrangement for, and a method of, enhancing performance of an imaging reader for imaging symbols to be read, include a solid-state imager supported by the reader and having an array of image sensors for capturing return light from a symbol as pixel data over a field of view, and a controller operatively connected to the imager, for mapping a virtual scan line in the field of view, for determining whether the virtual scan line extends entirely over the symbol, for remapping the virtual scan line as a remapped virtual scan line that extends entirely over the symbol upon determining that the virtual scan line extends partially over the symbol, and for decoding the pixel data that lies on the remapped virtual scan line.

摘要翻译： 包括用于对要读取的符号进行成像的成像读取器的性能的装置和方法，包括由读取器支持的固态成像器，并且具有用于将来自符号的返回光作为像素数据捕获的图像传感器阵列 视场，以及可操作地连接到成像器的控制器，用于在视场中映射虚拟扫描线，用于确定虚拟扫描线是否完全延伸穿过符号，用于将虚拟扫描线重新映射为重新映射的虚拟扫描 在确定虚拟扫描线部分地延伸到符号之上并且用于对位于重新映射的虚拟扫描线上的像素数据进行解码时，线完全在符号上延伸。

公开(公告)号：US07986340B2

公开(公告)日：2011-07-26

申请号：US12945232

申请日：2010-11-12

申请人： Duanfeng He ,  Dmitriy Yavid ,  Askold Strat

发明人： Duanfeng He ,  Dmitriy Yavid ,  Askold Strat

IPC分类号： H04N3/02

CPC分类号： H04N3/08 ,  H04N9/3129 ,  H04N9/3164 ,  H04N9/3176 ,  H04N9/3185

摘要： A lightweight, compact image projection module, especially for mounting in a housing having a light-transmissive window, is operative for causing selected pixels in a raster pattern of scan lines to be illuminated to produce an image of high resolution in color. The direction of scanning of the scan lines is switched between alternate frames, and the resulting image is the superposition of successive frames integrated for viewing by the human eye.

摘要翻译： 特别是用于安装在具有透光窗口的壳体中的轻巧紧凑的图像投影模块可操作用于使得扫描线的光栅图案中的所选像素被照亮以产生高分辨率的彩色图像。 扫描线的扫描方向在交替帧之间切换，并且所得到的图像是由人眼集成以供观看的连续帧的叠加。

公开(公告)号：US07866557B2

公开(公告)日：2011-01-11

申请号：US11862583

申请日：2007-09-27

申请人： Duanfeng He ,  Bradley S. Carlson

发明人： Duanfeng He ,  Bradley S. Carlson

IPC分类号： G03B7/08 ,  G06K5/00 ,  G06K7/10 ,  G06K7/14 ,  H04N3/14 ,  H04N5/335

CPC分类号： G06K7/10722 ,  G06K7/10732 ,  G06K7/10752

摘要： An imaging system for use in an bar code reader for imaging a target bar code. The imaging system includes a 2D sensor array generating a series of image frames and The sensor array can be selectively operated in a rolling shutter mode of operation or a pseudo global shutter mode of operation. The imaging system further includes an imaging lens assembly to focus light from the field of view onto the sensor array and an image analysis system for analyzing the series of image frames generated by the sensor array for image brightness and, based on image brightness, operating the sensor array in a selected one of the rolling shutter mode of operation and the pseudo-global shutter mode of operation.

摘要翻译： 一种用于条形码阅读器的成像系统，用于对目标条形码进行成像。 成像系统包括产生一系列图像帧的2D传感器阵列，并且传感器阵列可以选择性地以滚动快门操作模式或伪全局快门操作模式操作。 成像系统还包括将来自视野的光聚焦到传感器阵列上的成像透镜组件和用于分析由传感器阵列产生的图像亮度的一系列图像帧的图像分析系统，并且基于图像亮度，操作 传感器阵列中选择的一种滚动快门操作模式和伪全局快门操作模式。