公开(公告)号：US08174732B2

公开(公告)日：2012-05-08

申请号：US12268597

申请日：2008-11-11

Applicant: Sugitaka Oteki

Inventor： Sugitaka Oteki

IPC: H04N1/409 ,  G06K9/40

CPC classification number: H04N1/00002 ,  H04N1/00045 ,  H04N1/00063 ,  H04N1/00087 ,  H04N1/00092 ,  H04N1/00909 ,  H04N1/125 ,  H04N2201/044

Abstract: A white reference member is used to obtain white reference data. An image sensor scans the white reference member line by line to obtain a plurality of lines of white reference data. A skipping unit skips the white reference data with a predetermined skipping ratio to generate a skipped white reference data. A dust detecting unit detects a dust between the white reference member and the image sensor based on the skipped white reference data.

Abstract translation: 使用白色参考构件获得白色参考数据。 图像传感器逐行扫描白色参考成员以获得多行白色参考数据。 跳过单元以预定的跳过比率跳过白参考数据，以生成跳过的白参考数据。 灰尘检测单元基于跳过的白色参考数据检测白色参考构件和图像传感器之间的灰尘。

公开(公告)号：US20120092731A1

公开(公告)日：2012-04-19

申请号：US12962516

申请日：2010-12-07

Applicant: Tomofumi Nishida ,  Shinichi Yukiura

Inventor： Tomofumi Nishida ,  Shinichi Yukiura

IPC: H04N1/04

CPC classification number: H04N1/125 ,  H04N1/00602 ,  H04N1/401 ,  H04N1/4076 ,  H04N2201/0094 ,  H04N2201/044

Abstract: An image reading apparatus includes a conveyance unit configured to convey a sheet, a reading unit configured to read an image on the sheet conveyed by the conveyance unit, a calibration member including a white reference region for acquiring correction data for correcting image information acquired by reading the image on the sheet with the reading unit, and a driving unit configured to move the calibration member so as to locate the white reference region in a position where the reading unit can read the white reference region if the correction data is acquired, and to locate a region other than the white reference region in a position that faces the sheet to be conveyed and is not brought into contact with the sheet if the sheet is conveyed.

Abstract translation: 图像读取装置包括：输送单元，被配置为输送纸张;读取单元，被配置为读取由输送单元输送的纸张上的图像;校准部件，包括白色参考区域，用于获取用于校正通过读取获取的图像信息的校正数据 具有读取单元的片材上的图像，以及驱动单元，被配置为移动校准构件，以便如果获取校正数据，则将白色参考区域定位在读取单元可以读取白色参考区域的位置，并且将 在与被输送的片材相对的位置上设置白色参照区域以外的区域，如果片材被输送，则不与片材接触。

公开(公告)号：US20120050771A1

公开(公告)日：2012-03-01

申请号：US13221672

申请日：2011-08-30

Applicant: Kazuomi SAKATANI

Inventor： Kazuomi SAKATANI

IPC: H04N1/60

CPC classification number: H04N1/00002 ,  G03G15/0131 ,  G03G15/5062 ,  G03G2215/0161 ,  H04N1/00015 ,  H04N1/00023 ,  H04N1/00031 ,  H04N1/00045 ,  H04N1/00053 ,  H04N1/00063 ,  H04N1/00068 ,  H04N1/00087 ,  H04N1/0009 ,  H04N1/6033 ,  H04N2201/0006 ,  H04N2201/044

Abstract: An image forming apparatus includes a control section extracting a color composition of each color ranging from a first to an nth color from input image data, on the color composition of an mth color, the m being 1 to n−1, performing a first and a second gamma corrections correcting a gradation of the color composition respectively based on a gamma curve for the mth color to obtain a first corrected gradation value, and based on a gamma curve for an (m+1)th color to obtain a second corrected gradation value, and interpolating the first and the second corrected gradation values to determine an output value for the color composition, on the color composition of the nth color, correcting a gradation of the color composition based on a gamma curve for the nth color to obtain an output value for the color composition.

Abstract translation: 一种图像形成装置，包括控制部，从输入图像数据中提取从第一至第n颜色的颜色的颜色组合，第m色的颜色组成，m为1至n-1，执行第一和第 第二伽马校正分别基于第m色的伽马曲线校正色彩构图的灰度以获得第一校正灰度值，并且基于第（m + 1）色的伽马曲线以获得第二校正灰度 值，并且内插第一和第二校正灰度值以确定颜色组合的输出值，关于第n色的颜色组成，基于第n种颜色的伽马曲线校正颜色组合的灰度，以获得第 颜色组合的输出值。

公开(公告)号：US20120013952A1

公开(公告)日：2012-01-19

申请号：US13029327

申请日：2011-02-17

Applicant: Kosuke SHIMIZU

Inventor： Kosuke SHIMIZU

IPC: H04N1/40

CPC classification number: H04N1/00002 ,  H04N1/00018 ,  H04N1/00034 ,  H04N1/00045 ,  H04N1/0005 ,  H04N1/00055 ,  H04N1/00063 ,  H04N1/00087 ,  H04N1/401 ,  H04N2201/0094 ,  H04N2201/044

Abstract: An image scanning apparatus includes: an image scanning unit that includes plural light emitting elements and a light receiving portion receiving light emitted from the light emitting elements and reflected on a document and scans an image on the document; a light quantity information acquiring unit that acquires light quantity information on the quantity of light received by the light receiving portion while causing the light emitting elements to irradiate a reference member with light; a correction unit that corrects the scanned image, based on the light quantity information; and an abnormality detecting unit that detects abnormality of the light emitting elements. If the abnormality detecting unit detects the abnormality, the light quantity information acquiring unit acquires new light quantity information while causing the light emitting elements to irradiate the reference member with light and the correction unit corrects the scanned image, based on the new light quantity information.

Abstract translation: 一种图像扫描装置，包括：图像扫描单元，包括多个发光元件和受光部分，该光接收部分接收从发光元件发射并在文档上反射并在文档上扫描图像的光; 光量信息获取单元，其在使光发射元件用光照射参考构件的同时获取由光接收部分接收的光量的光量信息; 校正单元，其基于所述光量信息校正所述扫描图像; 以及检测发光元件的异常的异常检测单元。 如果异常检测单元检测到异常，则光量信息获取单元在使光发射元件用光照射参考构件的同时获取新的光量信息，并且校正单元基于新的光量信息来校正扫描图像。

公开(公告)号：US08098410B2

公开(公告)日：2012-01-17

申请号：US12403927

申请日：2009-03-13

Applicant: Ryu Hasegawa

Inventor： Ryu Hasegawa

IPC: H04N1/04

CPC classification number: H04N1/00002 ,  H04N1/00013 ,  H04N1/00031 ,  H04N1/00045 ,  H04N1/0005 ,  H04N1/00055 ,  H04N1/00063 ,  H04N1/00082 ,  H04N1/00087 ,  H04N1/0009 ,  H04N1/00925 ,  H04N1/121 ,  H04N1/1235 ,  H04N1/401 ,  H04N2201/0094 ,  H04N2201/044

Abstract: During a sheet-through operation, for a first original, a shading operation is performed to acquire white data and a light-quantity measuring operation is performed to acquire a reference value. For subsequent originals, only the light-quantity measuring operation is performed to acquire a subsequent light quantity. If the reference value and the subsequent light quantity differ greatly, the shading operation is performed at this time point to acquire new white data. The sheet-through operation is not stopped when the shading operation is not performed and the sheet-through operation is stopped when the shading operation is performed.

Abstract translation: 在直通操作期间，对于第一原稿，执行阴影操作以获取白色数据，并执行光量测量操作以获取参考值。 对于随后的原稿，仅进行光量测量操作以获取随后的光量。 如果参考值和后续光量差异很大，则在该时间点执行阴影操作以获取新的白色数据。 当不执行阴影操作并且当执行阴影操作时，直通操作停止时，片刻通过操作不停止。

公开(公告)号：US20120008175A1

公开(公告)日：2012-01-12

申请号：US12831264

申请日：2010-07-07

Applicant: Wen-Ching Liao ,  Lung Chen ,  Chin-Te Liu

Inventor： Wen-Ching Liao ,  Lung Chen ,  Chin-Te Liu

IPC: H04N1/04

CPC classification number: H04N1/00031 ,  H04N1/00013 ,  H04N1/00063 ,  H04N1/00087 ,  H04N1/12 ,  H04N1/193 ,  H04N2201/0081 ,  H04N2201/044

Abstract: A calibration mechanism is positioned in a scanning device having a scanning module for scanning a document. The scanning module defines a scanning line perpendicular to a scanned area of the document. The calibration mechanism includes a calibration unit, a supporting unit supporting the calibration unit, and a driving unit. The calibration unit is positioned to face the scanning module and aligned with the scanning line. The driving unit drives the calibration unit to move to close to the scanning module and away from the scanning module along the scanning line. The scanning module obtains great brightness value by scanning the calibration unit, if the calibration unit is close to the scanning module. The scanning module obtains small brightness value by scanning the calibration unit, if the calibration unit is far from the scanning module. Since, the calibration unit can represented as different colors and gray scales.

Abstract translation: 校准机构位于具有用于扫描文件的扫描模块的扫描装置中。 扫描模块定义垂直于文档扫描区域的扫描线。 校准机构包括校准单元，支撑校准单元的支撑单元和驱动单元。 校准单元定位成面向扫描模块并与扫描线对准。 驱动单元驱动校准单元沿着扫描线移动到靠近扫描模块并远离扫描模块。 如果校准单元靠近扫描模块，扫描模块通过扫描校准单元获得很大的亮度值。 如果校准单元远离扫描模块，则扫描模块通过扫描校准单元获得小的亮度值。 由于校准单元可以表示为不同的颜色和灰度级。

公开(公告)号：US08054510B2

公开(公告)日：2011-11-08

申请号：US11665202

申请日：2005-09-30

Applicant: Makoto Suzuki ,  Masaaki Yoshida

Inventor： Makoto Suzuki ,  Masaaki Yoshida

IPC: H04N1/40 ,  H04N1/04

CPC classification number: H04N1/4076 ,  H04N1/00002 ,  H04N1/00013 ,  H04N1/00031 ,  H04N1/00045 ,  H04N1/0005 ,  H04N1/00063 ,  H04N1/00068 ,  H04N1/00087 ,  H04N1/1912 ,  H04N1/1918 ,  H04N1/401 ,  H04N2201/044

Abstract: A document reader comprises line sensors that are staggeredly arranged and read a white reference plate to obtain a white reference read value A, and a white reference average value AA is determined from value A for each line sensor. The line sensors read another white reference plate placed on a document support plate to obtain a white reference read value B, and a white reference read average value BB is determined from value B for each line sensor. A sensitivity effect coefficient C for each line sensor is determined by dividing BB by AA. Using the line sensors, there are obtained a document read value E for each line sensor by reading an illuminated document on the document support plate, a white reference read value Aa by reading with the white reference plate before reading the document, and a black reference read value D by reading the white reference plate under a condition that an illumination is turned off before reading of the document. Shading for the line sensors is corrected using the coefficient C, the values Aa, D and E, and a number of gradation levels for image regions corresponding to read areas of the document.

Abstract translation: 文档读取器包括交错布置并读取白色参考板以获得白色参考读取值A的行传感器，并且针对每个行传感器从值A确定白色参考平均值AA。 线传感器读取放置在文件支撑板上的另一个白色参考板以获得白色参考读取值B，并且从每个行传感器的值B确定白色参考读取平均值BB。 通过将BB除以AA来确定每个线传感器的灵敏度效应系数C。 使用线传感器，通过在读取文档之前通过用白色参考板读取来读取文档支持板上的照明文档和白色参考读取值Aa，获得每行线传感器的文档读取值E，以及黑色参考 在读取文档之前，在照明被关闭的条件下读取白色参考板读取值D. 使用系数C，值Aa，D和E以及对应于文档的读取区域的图像区域的灰度级数来校正行传感器的阴影。

公开(公告)号：US20110261419A1

公开(公告)日：2011-10-27

申请号：US13175593

申请日：2011-07-01

Applicant: Koji Yasuzaki

Inventor： Koji Yasuzaki

IPC: H04N1/04

CPC classification number: H04N1/047 ,  H04N1/00904 ,  H04N1/00912 ,  H04N1/00928 ,  H04N1/1013 ,  H04N1/193 ,  H04N2201/044

Abstract: An image-reading apparatus and method for controlling the image-reading apparatus including a document plate where an original document is placed, a line image sensor that reads an image on the document plate by scanning to obtain image data, a reference-setting image that is placed outside a region of the document plate at a position where the line image sensor is able to read the reference-setting image, and a control unit configured to set a reference position when the image sensor reads the image, wherein the control unit detects the reference-setting image from the image data and, depending on a power-on state of the image-reading apparatus, selects the manner in which the reference position is set based on the reference-setting image.

Abstract translation: 一种图像读取装置和方法，用于控制图像读取装置，包括放置原始文件的原稿板，通过扫描读取文件板上的图像以获得图像数据的线形图像传感器;基准设定图像， 放置在文件板的区域的外侧，在线图像传感器能够读取基准设定图像的位置，以及控制单元，被配置为在图像传感器读取图像时设定基准位置，其中，控制单元检测 来自图像数据的参考设定图像，并且根据图像读取装置的通电状态，基于参考设定图像选择设定基准位置的方式。

公开(公告)号：US07999962B2

公开(公告)日：2011-08-16

申请号：US12187372

申请日：2008-08-06

Applicant: Koji Yasuzaki

Inventor： Koji Yasuzaki

IPC: H04N3/12 ,  G06F3/12

CPC classification number: H04N1/047 ,  H04N1/00904 ,  H04N1/00912 ,  H04N1/00928 ,  H04N1/1013 ,  H04N1/193 ,  H04N2201/044

Abstract: An image-reading apparatus and method for controlling the image-reading apparatus including a document plate where an original document is placed, a line image sensor that reads an image on the document plate by scanning to obtain image data, a reference-setting image that is placed outside a region of the document plate at a position where the line image sensor is able to read the reference-setting image, and a control unit configured to set a reference position when the image sensor reads the image, wherein the control unit detects the reference-setting image from the image data and, depending on a power-on state of the image-reading apparatus, selects the manner in which the reference position is set based on the reference-setting image.

Abstract translation: 一种图像读取装置和方法，用于控制图像读取装置，包括放置原始文件的原稿板，通过扫描读取文件板上的图像以获得图像数据的线形图像传感器;基准设定图像， 放置在文件板的区域的外侧，在线图像传感器能够读取基准设定图像的位置，以及控制单元，被配置为在图像传感器读取图像时设定基准位置，其中，控制单元检测 来自图像数据的参考设定图像，并且根据图像读取装置的通电状态，基于参考设定图像选择设定基准位置的方式。

公开(公告)号：US20110019248A1

公开(公告)日：2011-01-27

申请号：US12831977

申请日：2010-07-07

Applicant: Tomohiro Tachikawa

Inventor： Tomohiro Tachikawa

IPC: H04N1/04

CPC classification number: H04N1/00002 ,  H04N1/00013 ,  H04N1/00031 ,  H04N1/00045 ,  H04N1/0005 ,  H04N1/00063 ,  H04N1/00084 ,  H04N1/4097 ,  H04N2201/044

Abstract: In an image reading apparatus, if a foreign substance that was initially present on a document plate is removed by motion of a document being conveyed, a correct read luminance value is employed, instead of a value calculated by interpolation, for a pixel at which there was initially the foreign substance but there is no longer foreign substance thereby preventing degradation due to the interpolation. If a foreign substance on the document plate is detected after the conveying of the document by the conveying unit is started, correcting by a correcting unit is performed. In a case where the foreign substance on the document plate disappears during the conveying of the document by the conveying unit and the foreign substance is no longer detected, the correcting by the correcting unit is not performed, but image data is produced according to the image of the document read by the reading unit.

Abstract translation: 在图像读取装置中，如果最初存在于原稿台上的异物通过正在传送的文件的移动被移除，则采用正确的读取亮度值而不是通过插值计算的值，对于其中的像素 最初是外来物质，但不再有异物，从而防止由于内插而引起的劣化。 在开始通过传送单元传送文件之后检测到文档板上的异物时，执行由校正单元进行的校正。 在由输送单元输送文件期间原稿板上的异物消失并且不再检测到异物的情况下，不执行校正单元的校正，而是根据图像产生图像数据 由阅读单位读取的文件。