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    Duplex image reading apparatus
    281.
    发明申请
    Duplex image reading apparatus 失效
    双面图像读取装置

    公开(公告)号：US20020105686A1

    公开(公告)日：2002-08-08

    申请号：US10023666

    申请日：2001-12-21

    Inventor： Kazuhiko Hasegawa ,  Hirohisa Sawada

    IPC: H04N001/04

    CPC classification number: H04N1/2032 ,  H04N1/121 ,  H04N1/193 ,  H04N1/203 ,  H04N2201/044

    Abstract: A duplex image reading apparatus has a transportation path for transporting a sheet original to a reading region by an original transporting device, and first and second reading devices placed corresponding to respective transportation sides of the sheet original in the reading region of the transportation path, and is constructed in such structure that each of the first and second reading devices is of such a configuration that a color reference portion used as a color reference for reading is opposed to a reading portion while the color reference portion and the reading portion are placed on two sides with the transportation sides of the sheet original in between, wherein the first and second reading devices are arranged so that either one of the reading portion and the color reference portion is supported so as to be movable in a direction substantially perpendicular to an image reading surface of the reading portion.

    Abstract translation: 双面图像读取装置具有用于通过原稿输送装置将纸张原稿输送到读取区域的输送路径，以及与输送路径的读取区域中的原稿的各个输送侧对应配置的第一和第二读取装置，以及 被构造成这样的结构，使得第一和第二读取装置中的每一个具有这样的结构，即，将用作读取的颜色基准的颜色参考部分与读取部分相对，同时将颜色参考部分和读取部分放置在两个 其中所述第一和第二读取装置布置成使得所述读取部分和所述颜色参考部分中的任一个被支撑以便可以在基本上垂直于图像读取的方向上移动 读取部分的表面。

    Image reading device with cover status detector
    283.
    发明授权
    Image reading device with cover status detector 失效
    带盖状态检测器的图像读取装置

    公开(公告)号：US5682252A

    公开(公告)日：1997-10-28

    申请号：US656098

    申请日：1996-05-31

    Applicant: Motonobu Ando

    Inventor： Motonobu Ando

    IPC: G03B27/62 ,  G03G15/00 ,  G03G21/00 ,  G03G21/16 ,  G06T1/00 ,  H04N1/00 ,  H04N1/21 ,  H04N1/407 ,  H04N1/40 ,  H04N1/04 ,  H04N1/38

    CPC classification number: H04N1/00795 ,  H04N1/4076 ,  H04N2201/044

    Abstract: A reference surface for determining a threshold level of an image sensor is provided on a guide plate swingable with a cover away from the image sensor. The reference surface has markings thereon for determining a reading range of the image sensor. The image reading device makes three detections from the reading of the reference surface: a detection of the cover position by detecting the presence of the markings; a detection of the reading range of the image sensor by detecting the arrangement of the markings; and a detection of the threshold level of the image sensor by detecting the background of the reference surface. The threshold level is not taken until the device has determined that the cover is closed.

    Abstract translation: 用于确定图像传感器的阈值水平的参考表面设置在可与盖一起摆动的引导板上，远离图像传感器。 参考表面上具有用于确定图像传感器的读取范围的标记。 图像读取装置从读取参考面进行三次检测：通过检测标记的存在来检测盖位置; 通过检测标记的布置来检测图像传感器的读取范围; 以及通过检测参考表面的背景来检测图像传感器的阈值水平。 在设备确定盖子已关闭之前，不会采取阈值水平。

    Method and appartus for automatically calibrating cameras used for document scanning
    285.
    发明授权
    Method and appartus for automatically calibrating cameras used for document scanning 失效
    自动校准用于文件扫描的相机的方法和附件

    公开(公告)号：US5386299A

    公开(公告)日：1995-01-31

    申请号：US31300

    申请日：1993-03-12

    Applicant: Owen H. Wilson ,  Geoffrey G. Marlow

    Inventor： Owen H. Wilson ,  Geoffrey G. Marlow

    IPC: H04N1/00 ,  H04N1/12 ,  H04N1/203 ,  H04N1/407 ,  H04N1/46

    CPC classification number: H04N1/2032 ,  H04N1/00795 ,  H04N1/203 ,  H04N1/4076 ,  H04N1/12 ,  H04N2201/044

    Abstract: A moveable member which is moveable between first and second positions relative to an optical axis of an imaging camera is used to calibrate the camera. The moveable member has a first reference member positioned at the optical axis when the moveable member is in the first position, and has a second reference member positioned at the optical axis when the moveable member is in the second position. A preferred embodiment has a first calibration device for a front camera and a second calibration for a rear camera when both the front and the rear of the document are to be imaged. A single actuator is used to simultaneously move both moveable members of the first and second calibration devices between the positions mentioned.

    Abstract translation: 使用能够相对于成像照相机的光轴在第一和第二位置之间移动的可移动构件来校准照相机。 可移动构件具有当可移动构件处于第一位置时位于光轴处的第一参考构件，并且当可移动构件处于第二位置时具有位于光轴处的第二参考构件。 优选实施例具有用于前置照相机的第一校准装置和用于后置照相机的第二校准，当文件的正面和背面都要被成像时。 单个致动器用于在所述位置之间同时移动第一和第二校准装置的可移动构件。

    IMAGE READING APPARATUS
    287.
    发明申请
    IMAGE READING APPARATUS 审中-公开

    公开(公告)号：US20180262646A1

    公开(公告)日：2018-09-13

    申请号：US15979076

    申请日：2018-05-14

    Applicant: CANON DENSHI KABUSHIKI KAISHA

    Inventor： Yuji Gotoh ,  Hiroshi Komuro ,  Tatsuya Nishi ,  Yoshihiro Taniike

    IPC: H04N1/409 ,  H04N1/00

    CPC classification number: H04N1/4095 ,  G03B27/62 ,  G03G15/00 ,  G06T1/00 ,  H04N1/00 ,  H04N1/00742 ,  H04N1/028 ,  H04N1/04 ,  H04N1/2032 ,  H04N2201/044

    Abstract: There is provided an image reading apparatus including a first reading sensor provided in a first reading unit and configured to read one surface of the sheet, a second reading sensor provided in a second reading unit provided to face the first reading sensor and configured to read an image on the other surface of the sheet, a first background portion serving as a reading background of the first reading sensor, a second background portion serving as a reading background of the second reading sensor, and a moving portion configured to integrally move the first reading sensor and the second background portion, wherein the first reading unit includes a sensor case in which the first reading sensor is provided, and the sensor case is fixed to the apparatus main body.

    Image reading apparatus, including abnormal pixel detection, and image reading method
    289.
    发明授权
    Image reading apparatus, including abnormal pixel detection, and image reading method 有权
    图像读取装置，包括异常像素检测和图像读取方法

    公开(公告)号：US09473672B2

    公开(公告)日：2016-10-18

    申请号：US14875857

    申请日：2015-10-06

    Applicant: CANON KABUSHIKI KAISHA

    Inventor： Daisuke Morikawa

    IPC: H04N1/409 ,  H04N1/12 ,  H04N1/193 ,  H04N1/00 ,  H04N1/62

    CPC classification number: H04N1/4097 ,  H04N1/00013 ,  H04N1/00023 ,  H04N1/00037 ,  H04N1/00039 ,  H04N1/00087 ,  H04N1/00092 ,  H04N1/12 ,  H04N1/1235 ,  H04N1/125 ,  H04N1/193 ,  H04N1/62 ,  H04N2201/0081 ,  H04N2201/044

    Abstract: An image reading apparatus capable of accurately detecting abnormal pixels caused by a contaminant such as dirt, stain, or flaw on a moving document reading glass being read. An image processing unit of the image reading apparatus performs a first abnormal pixel detection process to detect pixel signals representing abnormal pixels and output from image sensors for respective colors when a reading unit reads a guide plate in a main scanning direction in a state before an original passes through a moving document reading position, performs a second abnormal pixel detection process to detect pixel signals representing abnormal pixels and output from the image sensors when an original being conveyed is read by the reading unit in the main scanning direction, and detects a main scanning direction of abnormal pixels based on results of these detection processes.

    Abstract translation: 一种图像读取装置，其能够准确地检测由正在读取的移动文件读数玻璃上的诸如污物，污点或缺陷的污染物引起的异常像素。 图像读取装置的图像处理单元执行第一异常像素检测处理，以在原稿之前的状态下，当读取单元在主扫描方向上读取导板时，检测表示异常像素的像素信号并从各种颜色的图像传感器输出 通过移动文档读取位置，执行第二异常像素检测处理以检测表示异常像素的像素信号并且当正被传送的原稿在主扫描方向上被读取单元读取时，从图像传感器输出，并且检测主扫描 基于这些检测过程的结果，异常像素的方向。

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