发明申请
US20050103851A1 Hand-supportable imaging-based bar code symbol reader employing a CMOS-type image sensor using global exposure techniques
有权
采用全球曝光技术的CMOS型图像传感器的基于手持式成像的条形码符号读取器
- 专利标题: Hand-supportable imaging-based bar code symbol reader employing a CMOS-type image sensor using global exposure techniques
- 专利标题(中): 采用全球曝光技术的CMOS型图像传感器的基于手持式成像的条形码符号读取器
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申请号: US10894478申请日: 2004-07-19
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公开(公告)号: US20050103851A1公开(公告)日: 2005-05-19
- 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
- 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
- 申请人地址: US NJ Blackwood
- 专利权人: Metrologic Instruments, Inc.
- 当前专利权人: Metrologic Instruments, Inc.
- 当前专利权人地址: US NJ Blackwood
- 主分类号: G06K7/10
- IPC分类号: G06K7/10
摘要:
A hand-supportable digital imaging-based bar code symbol reading device comprises: an automatic object presence and range detection subsystem; an area-type image formation and detection subsystem having a CMOS area-type image detection array, and narrow-area and wide area image capture modes of operation; an LED-based illumination subsystem having LED arrays, and narrow-area and wide area illumination modes of operation; an automatic light exposure measurement and illumination control subsystem; an image capturing and buffering subsystem; and an image-processing bar code symbol reading subsystem. The LED arrays associated with the LED-based illumination subsystem are automatically driven in a precise manner to globally expose the CMOS area-type image detection array with LED-based illumination only when substantially all of its rows of pixels are in a state of integration and have a common integration time, thereby enabling the image capturing and buffering subsystem to capture high quality images independent of the relative motion between the hand-supportable digital imaging-based bar code symbol reading device and the object.