Image reading device, image forming apparatus, and image reading method

    公开(公告)号:US11750753B2

    公开(公告)日:2023-09-05

    申请号:US17695838

    申请日:2022-03-16

    Abstract: An image reading device includes a reading unit, a background member, and processing circuitry. The reading unit includes alight source to emit light to a passage area through which an object passes and an imaging device to capture reflected light of the light emitted to generate a visible image and an invisible image. The background member is disposed opposite the light source across the passage area. The processing circuitry is configured to: detect a change in an image characteristic due to a change in an optical characteristic of the reading unit, in invisible images obtained by capturing of invisible marks on the background member; determine a correction amount of an image characteristic to be used for correcting an image of the object generated by the imaging device, based on the change in the image characteristic detected; and correct the image characteristic based on the correction amount determined.

    Photoelectric conversion element, image reading device, image forming apparatus, image reading method, and computer-readable recording medium

    公开(公告)号:US10298866B2

    公开(公告)日:2019-05-21

    申请号:US15387074

    申请日:2016-12-21

    Abstract: A photoelectric conversion element includes: light receiving elements that convert an optical signal into an electrical signal per pixel; offset fixing units that fix an offset of an output level of each of the light receiving elements to a reference level; analog/digital conversion units that convert signals respectively corresponding to a signal level being converted from an optical signal and output by the light receiving elements and a reset level output independent of an optical signal, into digital signals, according to the reference level; amplifier units that amplify a signal; and correlated double sampling units that perform correlated double sampling per each of the light receiving elements by using a signal based on the reset level and a signal based on the signal level, wherein the amplifier units amplify the signal corresponding to the reset level and the signal corresponding to the signal level before implementing the correlated double sampling.

    Vehicle periphery monitoring device
    7.
    发明授权
    Vehicle periphery monitoring device 有权
    车辆周边监控装置

    公开(公告)号:US09067537B2

    公开(公告)日:2015-06-30

    申请号:US13265167

    申请日:2010-01-28

    Abstract: Provided is a vehicle periphery monitoring device capable of making a driver reliably recognize the shape of an object to which attention should be paid. According to an image processing unit (1) (vehicle periphery monitoring device), for example, when it is highly probable that the shape of the object is difficult to be visually recognized through the output image because of the reason that the object is present far from the vehicle or other reason, an enlarged image (Q′) of the object (Q) is displayed on an HUD (7) so as not to overlap with the object (Q).

    Abstract translation: 提供一种能够使驾驶员可靠地识别应该注意的物体的形状的车辆周边监视装置。 根据图像处理单元(1)(车辆周边监视装置),例如,由于出现物体远的原因,通过输出图像很难使视觉识别对象的形状很可能 从车辆或其他原因,将物体(Q)的放大图像(Q')显示在HUD(7)上,以便不与物体(Q)重叠。

    Image reading apparatus, image forming apparatus, and image reading method
    8.
    发明授权
    Image reading apparatus, image forming apparatus, and image reading method 有权
    图像读取装置,图像形成装置和图像读取方法

    公开(公告)号:US09025216B2

    公开(公告)日:2015-05-05

    申请号:US14138791

    申请日:2013-12-23

    CPC classification number: H04N1/00798 H04N1/00933 H04N1/32475 H04N2201/0081

    Abstract: An image reading apparatus includes: light-receiving elements arranged in a main-scanning direction to perform photoelectric conversion pixel by pixel; AD converter units that convert each piece of analog data photoelectric-converted by the light-receiving elements into parallel pieces of digital data; a storage unit that stores therein each of the digital data converted by the AD converter units; a converter unit that reads the digital data stored in the storage unit and converts the read digital data into serial data in the main-scanning direction; a readout control unit that changeably controls a readout start pixel and a readout end pixel of the serial data in the main-scanning direction; and a period change unit that changes a period in which the converter unit converts digital data into serial data in the main-scanning direction based on the readout start pixel and the readout end pixel.

    Abstract translation: 图像读取装置包括:以主扫描方向布置的光接收元件,逐像素地执行光电转换; AD转换器单元,将由光接收元件光电转换的每个模拟数据转换为数字数据的并行; 存储单元,其中存储由AD转换器单元转换的数字数据的每个; 转换器单元,读取存储在存储单元中的数字数据,并将读取的数字数据转换成主扫描方向的串行数据; 读出控制单元,其可变地控制主扫描方向上的串行数据的读出开始像素和读出端像素; 以及周期改变单元,其改变转换器单元基于读出的开始像素和读出端像素将数字数据转换成主扫描方向上的串行数据的周期。

    Photoelectric conversion device, sensor control circuit, image reading device, and image forming apparatus
    9.
    发明授权
    Photoelectric conversion device, sensor control circuit, image reading device, and image forming apparatus 有权
    光电转换装置,传感器控制电路,图像读取装置和图像形成装置

    公开(公告)号:US08797606B2

    公开(公告)日:2014-08-05

    申请号:US12850133

    申请日:2010-08-04

    CPC classification number: H04N5/3692 H04N5/372 H04N5/3765

    Abstract: The photoelectric conversion device includes a photoelectric conversion element configured to convert light reflected from an original image to electrical signals and a clock generator configured to generate driving signals for driving the photoelectric conversion element from a reference clock. Each of the driving signals is generated using the same logic gate or substantially the same logic gate.

    Abstract translation: 光电转换装置包括被配置为将从原始图像反射的光转换为电信号的光电转换元件和被配置为产生用于从参考时钟驱动光电转换元件的驱动信号的时钟发生器。 每个驱动信号使用相同的逻辑门或基本上相同的逻辑门产生。

    IMAGE READING APPARATUS, IMAGE FORMING APPARATUS, AND IMAGE READING METHOD
    10.
    发明申请
    IMAGE READING APPARATUS, IMAGE FORMING APPARATUS, AND IMAGE READING METHOD 有权
    图像读取装置,图像形成装置和图像读取方法

    公开(公告)号:US20140204432A1

    公开(公告)日:2014-07-24

    申请号:US14138791

    申请日:2013-12-23

    CPC classification number: H04N1/00798 H04N1/00933 H04N1/32475 H04N2201/0081

    Abstract: An image reading apparatus includes: light-receiving elements arranged in a main-scanning direction to perform photoelectric conversion pixel by pixel; AD converter units that convert each piece of analog data photoelectric-converted by the light-receiving elements into parallel pieces of digital data; a storage unit that stores therein each of the digital data converted by the AD converter units; a converter unit that reads the digital data stored in the storage unit and converts the read digital data into serial data in the main-scanning direction; a readout control unit that changeably controls a readout start pixel and a readout end pixel of the serial data in the main-scanning direction; and a period change unit that changes a period in which the converter unit converts digital data into serial data in the main-scanning direction based on the readout start pixel and the readout end pixel.

    Abstract translation: 图像读取装置包括:以主扫描方向布置的光接收元件,逐像素地执行光电转换; AD转换器单元,将由光接收元件光电转换的每个模拟数据转换为数字数据的并行; 存储单元,其中存储由AD转换器单元转换的数字数据的每个; 转换器单元,读取存储在存储单元中的数字数据,并将读取的数字数据转换成主扫描方向的串行数据; 读出控制单元,其可变地控制主扫描方向上的串行数据的读出开始像素和读出端像素; 以及周期改变单元,其改变转换器单元基于读出的开始像素和读出端像素将数字数据转换成主扫描方向上的串行数据的周期。

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