公开(公告)号：KR1020010062594A

公开(公告)日：2001-07-07

申请号：KR1020000079766

申请日：2000-12-21

Applicant: 가부시키가이샤 리코

Inventor： 아사카와데츠오

IPC: G03G15/04

CPC classification number: H04N1/0464 ,  H04N1/1013 ,  H04N1/12 ,  H04N1/193 ,  H04N2201/044

Abstract: PURPOSE: To improve throughput by devising shading operation when reading an image with a sheet through system. CONSTITUTION: An operation parameter required for shading operation or reading operation is set (S901), and shading operation is performed (S902). After shading operation, reading operation is started (S903) and the end of reading is waited (S904). After the end of reading (S905), shading operation is performed (S906). When shading operation is finished (S907) and the next reading is prepared (S908), an operation parameter is set (S909), reading operation is started (S910) and the end of reading is waited (S911). After the end of reading (S912), shading operation is performed (S913). Thus, throughput in continuous reading of plural images is improved.

Abstract translation: 目的：通过系统读取图像，通过设计阴影操作来提高吞吐量。 构成：设置阴影操作或读取操作所需的操作参数（S901），执行阴影操作（S902）。 在阴影操作之后，开始读取操作（S903），等待读取结束（S904）。 读取结束后（S905），执行阴影处理（S906）。 当遮蔽操作完成（S907）并准备下一次读取（S908）时，设置操作参数（S909），开始读取操作（S910）并等待读取结束（S911）。 读取结束（S912）后，进行着色操作（S913）。 因此，提高了连续读取多个图像的吞吐量。

公开(公告)号：KR100231154B1

公开(公告)日：1999-11-15

申请号：KR1019970015316

申请日：1997-04-24

Applicant: 삼성전자주식회사

Inventor： 김해철

IPC: G06K15/12

CPC classification number: H04N1/00013 ,  H04N1/00002 ,  H04N1/00029 ,  H04N1/00053 ,  H04N1/00408 ,  H04N1/00488 ,  H04N1/0049 ,  H04N1/00925 ,  H04N2201/044

Abstract: 본 발명은 셔틀방식의 프린터, 스캐너의 복합기에서 스캐너의 오염여부를 판별하는 스캐너 오염 판별방법 및 장치에 관한 것으로, 보다 상세하게는 프린터, 스캐너의 복합기에서 스캔 레퍼런스값이 기준레벨 이상이면 정상적인 스캔 데이터가 제공되도록 하고, 만일 스캔 레퍼런스 값이 기준레벨 이하이면 스캐너 또는 스캐너 레퍼런스 화이트가 오염임을 판단하여 경고메시지를 표시부패널에 표시하고 이와 동시에 알람을 발생시켜 사용자로 하여금 화이트 바나 스캐너부분을 점검할 수 있게 한 것이다.
이를 위해 본 발명은 화이트 레퍼런스 바의 레벨값을 설정하는 레벨저항과, 광원에 노출된 화이트 레벨의 레퍼런스 값의 데이터레벨을 전압레벨로 변환시키는 이미지센서와, 상기 이미지센서에서 변환된 화이트 레퍼런스 전압값과 상기 레벨저항에 의해 설정한 화이트 레퍼런스 바의 적정값을 비교하는 비교기와, 상기 비교기에서 비교한 전압값에 따라 화이트 레퍼런스 전압값이 화이트 레퍼런스 바의 적정값 보다 적으면 정상적인 스킨데이터가 스캐너모듈에 제공되도록 모터를 구동시키고 적정값보다 전압값이 크면 스캐너모듈 동작이 정지되도록 모터의 구동을 정지시키는 중앙처리장치 및 경고메시지나 알람을 발생시키는 표시부패널를 구비한 것을 그 특징으로 한다.

公开(公告)号：EP1718057B1

公开(公告)日：2018-11-14

申请号：EP06252249.5

申请日：2006-04-27

Applicant: Brother Kogyo Kabushiki Kaisha

Inventor： Ikeno, Takahiro c/o IP Dept. Brother Kogyo KK ,  Nakano, Keiichi c/o IP Dept. Brother Kogyo KK

IPC: H04N1/10 ,  H04N1/12 ,  H04N1/401

CPC classification number: H04N1/401 ,  H04N1/00002 ,  H04N1/00013 ,  H04N1/00023 ,  H04N1/00031 ,  H04N1/00045 ,  H04N1/0005 ,  H04N1/00063 ,  H04N1/00068 ,  H04N1/00076 ,  H04N1/00087 ,  H04N1/1017 ,  H04N1/1215 ,  H04N2201/044

Abstract: An image reading apparatus for reading an image with respect to a plurality of colors, including: a reference member; an image reading device including a plurality of light receiving elements, the reading device reading the reference member to obtain white level information for the respective colors, the white level information for each of the colors being a set of data of a quantity obtained by the light receiving elements, the read image being corrected based on at least the white level information; a ratio calculator calculating a ratio among the level information of the respective colors; an abnormal-data determiner determining that a first piece of data in the white level information of any particular color is abnormal data, where the first piece of data is different from a second specific piece of data in the level information of the same color which second specific piece of data is in a predetermined relationship with the first specific data, by an amount not smaller than a predetermined threshold, or where the first specific data is outside a range; and a data corrector obtaining a correction value obtained by multiplying, by the ratio, a value at the pixel in the level information of at least one color which is determined to be not including the abnormal value, and replaces the abnormal value with the correction value.

公开(公告)号：EP2458839A3

公开(公告)日：2015-01-14

申请号：EP11178623.2

申请日：2011-08-24

Applicant: Samsung Electronics Co., Ltd.

Inventor： CHUN, Jee-hoon ,  JUN, Gyu-sok

IPC: H04N1/00

CPC classification number: H04N1/0318 ,  H04N1/1235 ,  H04N1/2032 ,  H04N1/407 ,  H04N1/4076 ,  H04N2201/03112 ,  H04N2201/03116 ,  H04N2201/03133 ,  H04N2201/03145 ,  H04N2201/03175 ,  H04N2201/03195 ,  H04N2201/044

Abstract: A document scanning apparatus for scanning a document is provided. The document scanning apparatus includes an image sensor unit which irradiates an incident light towards the document and generates image data by sensing a reflected light reflected from the document, a supporting unit which supports the image sensor unit, a movement unit which moves the image sensor unit between a scanning position and a calibration position, a housing which houses the image sensor unit, the supporting unit, and the movement unit, a transparent plate which transmits the incident light and the reflected light, a calibration sheet which is attached to a surface of the transparent plate, which is exposed to outside and is positioned in an area including the calibration position, and a housing cover which is coupled to the housing and seals inside of the housing.

公开(公告)号：EP2323364A8

公开(公告)日：2011-09-21

申请号：EP10190413.4

申请日：2010-11-09

Applicant: Ricoh Company, Ltd.

Inventor： Tsukahara, Hajime

IPC: H04N1/407 ,  H04N1/00 ,  H04N1/04 ,  H04N1/40 ,  H04N1/19

CPC classification number: H04N1/407 ,  H04N1/12 ,  H04N1/193 ,  H04N1/2032 ,  H04N1/4076 ,  H04N2201/044

Abstract: An image scanning apparatus includes an image scanning unit (25) that reads an image from an original sheet (1) by scanning an image-formed surface of the original sheet (1) with light in a main-scanning direction and converting light reflected from the image-formed surface into electricity using a photoelectric conversion element (201); a shading correction unit (205) that performs shading correction on an image signal created by reading the image from the original sheet (1); a white member (26) that faces a scanning surface of the image scanning unit (25); and a reference-white-data creating unit (25) that creates reference white data for the shading correction by scanning a surface of the white member (26) using the image scanning unit (25); and an interval controlling unit (100) that decreases an interval between a scanning surface of the image scanning unit (25) and a surface of the white member (26) when the reference-white-data creating unit (25) creates the referential white data.

Abstract translation: 一种图像扫描设备包括：图像扫描单元（25），其通过利用主扫描方向上的光扫描原始片材（1）的图像形成表面来从原稿片材（1）读取图像，并将从 使用光电转换元件（201）将图像形成表面转换成电; 阴影校正单元（205），其对通过从原始片材（1）读取图像而创建的图像信号执行阴影校正; 白色构件（26），其面向图像扫描单元（25）的扫描表面; 以及参考白数据生成部（25），其使用所述图像读取部（25）对所述白构件（26）的表面进行扫描，生成用于所述明暗校正的基准白数据。 和当参考白数据生成单元（25）创建参考白数据（26）时，减小图像扫描单元（25）的扫描表面和白部件（26）的表面之间的间隔的间隔控制单元（100） 数据。

公开(公告)号：EP1622354B1

公开(公告)日：2010-02-24

申请号：EP05254664.5

申请日：2005-07-26

Applicant: Brother Kogyo Kabushiki Kaisha

Inventor： Ikeno, Takahiro, Technology Planning & IP Dept. ,  Susaki, Yoichi, Technology Planning & IP Dept.

IPC: H04N1/10

CPC classification number: H04N1/00997 ,  H04N1/00615 ,  H04N1/0313 ,  H04N1/0464 ,  H04N1/1017 ,  H04N1/1061 ,  H04N1/12 ,  H04N1/123 ,  H04N1/193 ,  H04N1/4076 ,  H04N2201/0081 ,  H04N2201/0094 ,  H04N2201/0422 ,  H04N2201/044

Abstract: An image scanner includes a transparent plate (13), a scanning device (21), a driving device, a positioning member (17), a black reference portion (17b) and a white reference portion (17a). The transparent plate has an original placing surface. The scanning device irradiates an original (P) with light by means of a light source and scans reflected light from the original. The driving device reciprocates the scanning device along the transparent plate. The positioning member positions the original placed on the original placing surface of the transparent plate. The black reference portion, which is disposed on the original placing surface side of the positioning member and at substantially a central portion of the positioning member in moving directions of the scanning device, absorbs ambient light entering to the original placing surface side of the positioning member through the transparent plate. The white reference portion is provided to the original placing surface side of the positioning member.

公开(公告)号：EP1806913B1

公开(公告)日：2009-06-17

申请号：EP05788113.8

申请日：2005-09-30

Applicant: Seiko I Infotech Inc.

Inventor： Suzuki, Makoto, Seiko Instruments Inc. ,  Yoshida, Masaaki, Seiko Instruments Inc.

IPC: H04N1/19 ,  G06T1/00 ,  H04N1/401

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: Photoelectric conversion elements of line sensors (CIS22 to CIS26) staggeredly arranged read a white reference plate to acquire a white reference read value A, and a white reference read average value AA is determined from the white reference read value A for each line sensor. Further the photoelectric conversion elements read another white reference plate placed on a document support plate to acquire a white reference read value B, and a white reference read average value BB is determined from the white reference read value B for each of the line sensors (CIS22 to CIS26). Using the white reference read values AA, BB a sensitivity effect coefficient C used for uniforming the sensitivities different because of the variation of the distances from the line sensors (CLS22 to CLS26) to the document support plate is determined by dividing the average value BB by a data processing section for each of the photoelectric conversion element of the line sensors. By using a white reference read value Aa acquired by reading a white reference plate immediately before reading a document and a black reference read value, a white reference read value Aa for shading correction for correcting a document read value E is corrected with the sensitivity offset coefficient C. In such a way, irrespective of the variation of the distances from the line sensors to the document support plate, the variation of the document read values read from the photoelectric conversion element of the line sensors can be suppressed.

公开(公告)号：EP1835724A3

公开(公告)日：2009-03-25

申请号：EP07251145.4

申请日：2007-03-19

Applicant: Ricoh Company, Ltd.

Inventor： Tsukahara, Hajime

IPC: H04N1/407

CPC classification number: H04N1/407 ,  H04N1/1013 ,  H04N2201/044

Abstract: A first set-value calculating unit (161) calculates a first set value of a black-level feedback based on a reflection amount that increases a speed of tracking to a black-level target value in a black-level feedback control. A second set-value calculating unit (162) calculates a second set value of a black-level feedback based on a reflection amount that slows down a tracking to a black-level target value as compared to the speed of tracking of the first set-value calculating unit (161). A selecting unit (164) selects and outputs any one of the first set value and the second set value and outputs selected value as a set value. A controlling unit (163) controls selection of any one of the first set value and the second set value by the selecting unit (164) based on the black differential value and a gain of the image data.

公开(公告)号：EP1835723A2

公开(公告)日：2007-09-19

申请号：EP07251104.1

申请日：2007-03-15

Applicant: Ricoh Company, Ltd.

Inventor： Inage, Osamu

IPC: H04N1/407

CPC classification number: H04N1/486 ,  H04N1/401 ,  H04N2201/044 ,  H04N2201/0454 ,  H04N2201/0466

Abstract: An image processor includes a reading unit (10, 13, 17) that moves a scanning optical system (10, 13) toward a reference white sheet (101) to read the reference white sheet (101) from a direction along which the scanning optical system (10, 13) returns to the carried document reading glass (6) before reading one sheet of a document mounted on a carried document reading glass (6) by an automatic document feeding unit (3) in a sheet document reading mode of forming an image of the document carried by the automatic document feeding unit (3) by an image sensor (15) through the scanning optical system (10, 13) facing the carried document reading glass (6).

Abstract translation: 一种图像处理器包括一个读取单元（10,13,17），该读取单元将扫描光学系统（10,13）朝向参考白板（101）移动，以从扫描光学系统 系统（10,13）在以自动文件馈送单元（3）以成形纸张文档读取模式读取安装在被承载文件读数玻璃（6）上的一张原稿之前返回到被携带的文件阅读玻璃（6） 由图像传感器（15）通过面向所携带的文件读数玻璃（6）的扫描光学系统（10,13）由自动文件馈送单元（3）携带的原稿的图像。

公开(公告)号：EP1806913A1

公开(公告)日：2007-07-11

申请号：EP05788113.8

申请日：2005-09-30

Applicant: SEIKO INSTRUMENTS INC.

Inventor： Suzuki, Makoto, Seiko Instruments Inc. ,  Yoshida, Masaaki, Seiko Instruments Inc.

IPC: H04N1/19 ,  G06T1/00 ,  H04N1/401

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: Photoelectric conversion elements of line sensors (CIS22 to CIS26) arranged in a zigzag manner read a white reference plate to acquire a white reference read value A, and a white reference read average value AA is determined from the white reference read value A for each line sensor. Further, the photoelectric conversion elements read another white reference plate placed on a document support plate to acquire a white reference read value B, and a white reference read average value BB is determined from the white reference read value B for each of the line sensors (CIS22 to CIS26). By using the white reference read average values AA and BB, a sensitivity effect coefficient C used for uniforming the sensitivities different because of the variation of the distances from the line sensors (CIS22 to CIS26) to the document support plate is determined by dividing the average value BB by a data processing section for each of the photoelectric conversion element of the line sensors. By using a white reference read value Aa acquired by reading a white reference plate immediately before reading a document and a black reference read value, a white reference read value Aa for shading correction for correcting a document read value E is corrected with the sensitivity offset coefficient C. In this way, irrespective of the variation of the distances from the line sensors to the document support plate, the variation of the document read values read from the photoelectric conversion element of the line sensors can be suppressed.

Abstract translation: 以Z字形排列的线传感器（CIS22〜CIS26）的光电转换元件读取白色基准板以获取白色基准读取值A，并且根据白线参考读取值A从每条线确定白色基准读取平均值AA 传感器。 此外，光电转换元件读取放置在原稿支撑板上的另一个白色参考板以获取白色基准读取值B，并且从每个行传感器的白色基准读取值B确定白色基准读取平均值BB（ CIS22至CIS26）。 通过使用白色参考读取平均值AA和BB，用于使由于从线路传感器（CIS22至CIS26）到文档支撑板的距离的变化而不同的灵敏度的均匀化的灵敏度效应系数C通过除以平均值 通过数据处理部分对于行传感器的每个光电转换元件的值BB。 通过使用在读取文档之前通过读取白色参考板获得的白色基准读取值Aa和黑色参考读取值，用灵敏度偏移系数校正用于校正文档读取值E的阴影校正的白色基准读取值Aa 以这种方式，不管从线传感器到文件支撑板的距离的变化如何，可以抑制从线传感器的光电转换元件读取的文档读取值的变化。