Invention Grant
US07267282B2 Hand-supportable imaging-based bar code symbol reader capable of exposing an automatically detected object to a field of narrow-band LED-based illumination only when substantially all rows of pixels in a CMOS image sensing array are in a state of integration
有权
只有当CMOS图像感测阵列中的基本上所有像素行都处于集成状态时，手持式成像的条形码符号读取器能够将自动检测到的对象暴露于基于窄带LED的照明领域
- Patent Title: Hand-supportable imaging-based bar code symbol reader capable of exposing an automatically detected object to a field of narrow-band LED-based illumination only when substantially all rows of pixels in a CMOS image sensing array are in a state of integration
- Patent Title (中): 只有当CMOS图像感测阵列中的基本上所有像素行都处于集成状态时，手持式成像的条形码符号读取器能够将自动检测到的对象暴露于基于窄带LED的照明领域
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Application No.: US10901427Application Date: 2004-07-28
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Publication No.: US07267282B2Publication Date: 2007-09-11
- Inventor: 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
- Applicant: 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
- Applicant Address: US NJ Blackwood
- Assignee: Metrologic Instruments, Inc.
- Current Assignee: Metrologic Instruments, Inc.
- Current Assignee Address: US NJ Blackwood
- Agent Thomas J. Perkowski, Esq., P.C.
- Main IPC: G06K7/10
- IPC: G06K7/10
Abstract:
A hand-supportable digital imaging-based bar code symbol reader comprises: an automatic object presence detection subsystem; an image formation and detection subsystem employing a CMOS area-type image detection array; an LED-based illumination subsystem employing an LED illumination array to generate a field of narrow-band LED-based illumination within the FOV; an automatic light exposure measurement and illumination control subsystem employing LED illumination driver circuitry; 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. The automatic light exposure measurement and illumination control subsystem controls the LED illumination driver circuitry to expose the automatically detected object, to a field of narrow-band LED-based illumination only when substantially all rows of pixels in the CMOS image sensing array are in a state of integration, thereby enabling the image capturing and buffering subsystem to capture high quality digital images independent of the relative motion between the bar code symbol reader and the object.
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