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11.发明授权公开(公告)号：US10129415B2
公开(公告)日：2018-11-13
申请号：US15603632
申请日：2017-05-24
Applicant: CANON KABUSHIKI KAISHA
Inventor： Daisuke Morikawa
Abstract: Provided is an image reading apparatus including a line sensor including three line sensors arranged at a predetermined interval in a sub-scanning direction, and being configured to read an image of an original by the respective line sensors, which includes light receiving elements arranged in a first direction, to generate read data representing the read image, the three line sensors each including a first light receiving element configured to receive red light, a second light receiving element configured to receive blue light, and a third light receiving element configured to receive green light, which are arranged in a main scanning direction; and a reading control board. The reading control board is configured to generate a first combined flag obtained by combining results of detecting abnormal images of respective colors and a second combined flag obtained by combining results of detecting abnormal images of the respective colors.
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公开(公告)号：US20150281490A1
公开(公告)日：2015-10-01
申请号：US14664525
申请日：2015-03-20
Applicant: CANON KABUSHIKI KAISHA
Inventor： Daisuke Morikawa
IPC: H04N1/00
CPC classification number: H04N1/00771 , H04N1/00689 , H04N1/00708 , H04N1/00724 , H04N1/00726 , H04N1/00748 , H04N1/00777 , H04N2201/0081
Abstract: The image reading apparatus includes a reading unit configured to read the image of the original placed on the platen glass. The image reading apparatus determines whether the original is on the platen glass or not. If it is determined that the original is on the platen glass, the image reading apparatus determines whether the original is blank or not based on the image read by the reading unit. If it is determined that the original is not on the platen glass, or if it is determined that the original is blank, the image reading apparatus notifies the user that the original is not on the platen glass or the original is blank.
Abstract translation: 图像读取装置包括读取单元，其被配置为读取放置在稿台玻璃上的原稿的图像。 图像读取装置确定原稿是否在稿台玻璃上。 如果确定原稿在稿台玻璃上，则图像读取装置基于由读取单元读取的图像来确定原稿是否为空白。 如果确定原稿不在稿台玻璃上，或者如果确定原稿是空白的，则图像读取装置通知用户原稿不在稿台玻璃上或原稿是空白的。
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公开(公告)号：US20210075933A1
公开(公告)日：2021-03-11
申请号：US17010686
申请日：2020-09-02
Applicant: CANON KABUSHIKI KAISHA
Inventor： Daisuke Morikawa
Abstract: An image reading apparatus includes a reading unit configured to read an image of a document and generate image data, a filtering unit configured to perform filtering processing on the image data generated by the reading unit and generate image data, a binarization unit configured to perform binarization processing based on the image data generated by the filtering unit using a first threshold value to generate first binary image data, and perform binarization processing based on the image data generated by the filtering unit using a second threshold value to generate second binary image data, and a detection unit configured to detect an edge in the image data generated by the reading unit based on the first binary image data and the second binary image data generated by the binarization unit.
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公开(公告)号：US10230854B2
公开(公告)日：2019-03-12
申请号：US15603641
申请日：2017-05-24
Applicant: CANON KABUSHIKI KAISHA
Inventor： Daisuke Morikawa
Abstract: An image reading apparatus includes a line sensor configured to read an image of a target object. The line sensor includes light receiving element arrays arranged at given intervals in a second direction perpendicular to a first direction for a plurality of lines, the plurality of light receiving element arrays each including a first light receiving element configured to receive light of a first color and a second light receiving element configured to receive light of a second color different from the first color, which are arranged in the first direction to form one line. The image reading apparatus is configured to derive a shading correction coefficient for shading correction based on output from the light receiving element arrays that have read a reference white plate, and to identify, as an abnormal pixel, a pixel obtained by reading a foreign matter existing on the reference white plate.
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15.发明授权公开(公告)号：US10038821B2
公开(公告)日：2018-07-31
申请号：US15287784
申请日：2016-10-07
Applicant: CANON KABUSHIKI KAISHA
Inventor： Daisuke Morikawa
CPC classification number: H04N1/4097 , H04N1/00092 , H04N1/00689 , H04N1/00729 , H04N1/00763 , H04N1/00769 , H04N1/00798 , H04N2201/0081 , H04N2201/0094
Abstract: An image reading apparatus that makes it possible to reduce the influences of dirt on a white reference chart itself, stripes caused by dust, and the like, and thereby generate accurate data for shading correction. An image processor performs shading correction on image data read by a reader unit. The read image data is compared with threshold values set for each pixel, and a pixel which is out of a range of the threshold values is determined as a singular point pixel. Data of a pixel determined as a singular point pixel is interpolated from data around the singular point pixel. Data of a pixel which is not determined as a singular point pixel is adopted as valid shading correction data. An operation controller controls the number of effective sampling lines from start to termination of sampling to be performed.
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Patent Agency Ranking
公开(公告)号：US20160295046A1
公开(公告)日：2016-10-06
申请号：US15085034
申请日：2016-03-30
Applicant: CANON KABUSHIKI KAISHA
Inventor： Hayato Koyama , Katsuhiro Ishido , Daisuke Morikawa , Hirotaka Seki , Toshitaka Noro , Yuzuru Yano
IPC: H04N1/00
CPC classification number: H04N1/00779 , H04N1/0057 , H04N1/0071 , H04N1/00745 , H04N1/00758 , H04N2201/0094
Abstract: An image reading apparatus which is capable of successfully reading an image off an original by correctly detecting a size of the original without degrading productivity even if mixed-size originals are placed on an original tray with edges not aligned. An image reading unit reads an image off an original passing through a reading position. An original size detection sensor detects an original. A first original size is determined using a result of detection by the original size detection sensor, and a second original size is determined using the image read off the original. The first original size or the second original size is adopted as an original size.
Abstract translation: 一种图像读取装置，其能够通过正确地检测原稿的尺寸而不降低生产率而成功地读取图像，即使将混合尺寸的原稿放置在未对齐的边缘的原始托盘上。 图像读取单元从通过阅读位置的原稿读取图像。 原稿尺寸检测传感器检测原稿。 使用原稿尺寸检测传感器的检测结果确定第一原稿尺寸，并且使用从原稿读出的图像来确定第二原稿尺寸。 第一个原始尺寸或第二个原始尺寸被采用为原始尺寸。
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17.发明申请公开(公告)号：US20140006912A1
公开(公告)日：2014-01-02
申请号：US13897019
申请日：2013-05-17
Applicant: CANON KABUSHIKI KAISHA
Inventor： Daisuke Morikawa
CPC classification number: H03M13/09 , G05B2219/21028 , G05B2219/21039 , G06F11/1004 , H03M9/00 , H04L1/0061 , H04L12/40 , H04L12/4637 , H04L29/06
Abstract: A communication system having a main control portion (MCP) to transmit information destined to a device n cascade levels down, and create an error detection code (CRC code) for data that contains a count of remaining cascade levels until an n-th cascade level and the information. The code is transmitted to an upstream sub-control portion (USCP) with the data. The USCP creates a CRC code for the data, and compares the created and received codes. For a match, the USCP determines whether the information is destined to itself based on the remaining cascade level count. When the information is not so destined, the USCP creates new data with the remaining cascade level count reduced by 1, and a CRC code for the new data, and transmits the created code to a further device, with the new data.
Abstract translation: 一种具有主控制部分（MCP）的通信系统，用于发送目的地为设备级联级联的信息级别，并为包含剩余级联级数的数据的数据创建错误检测码（CRC码），直到第n级联电平 和信息。 该代码被传送到具有数据的上游子控制部分（USCP）。 USCP为数据创建CRC代码，并比较创建和接收的代码。 对于一个匹配，USCP根据剩余的级联级数确定信息是否注定到自身。 当信息不是这样的目的地时，USCP创建新的数据，其余的级联级别减少1，以及新数据的CRC码，并将新创建的代码发送到另一设备。
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公开(公告)号：US11777627B2
公开(公告)日：2023-10-03
申请号：US17730439
申请日：2022-04-27
Applicant: CANON KABUSHIKI KAISHA
Inventor： Daisuke Morikawa
CPC classification number: H04J3/0658 , H04L69/22
Abstract: A serial communication apparatus capable of efficiently eliminating a timing lag between serial data transferred via a plurality of routes in serial communication is provided. The serial communication apparatus transfers serial data transmitted from a transmitting side communication unit disposed on a transmitting side to a receiving side communication unit disposed on a receiving side via a plurality of lanes. The transmitting side communication unit comprises a packet transmitting unit configured to divide transmission data into equal parts according to the number of the lanes, distribute the divided transmission data to each lane as a data main body, and add header information indicating the type of the transmission data to the divided transmission data distributed to each lane. The receiving side communication unit comprises a received packet skew adjusting unit configured to adjust skew of data received in each lane.
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公开(公告)号：US20170353613A1
公开(公告)日：2017-12-07
申请号：US15603641
申请日：2017-05-24
Applicant: CANON KABUSHIKI KAISHA
Inventor： Daisuke Morikawa
CPC classification number: H04N1/00037 , H04N1/00602 , H04N1/00795 , H04N1/193 , H04N1/401 , H04N1/4097 , H04N1/6008 , H04N2201/0081
Abstract: An image reading apparatus includes a line sensor configured to read an image of a target object. The line sensor includes light receiving element arrays arranged at given intervals in a second direction perpendicular to a first direction for a plurality of lines, the plurality of light receiving element arrays each including a first light receiving element configured to receive light of a first color and a second light receiving element configured to receive light of a second color different from the first color, which are arranged in the first direction to form one line. The image reading apparatus is configured to derive a shading correction coefficient for shading correction based on output from the light receiving element arrays that have read a reference white plate, and to identify, as an abnormal pixel, a pixel obtained by reading a foreign matter existing on the reference white plate.
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公开(公告)号：US09706070B2
公开(公告)日：2017-07-11
申请号：US14664525
申请日：2015-03-20
Applicant: CANON KABUSHIKI KAISHA
Inventor： Daisuke Morikawa
CPC classification number: H04N1/00771 , H04N1/00689 , H04N1/00708 , H04N1/00724 , H04N1/00726 , H04N1/00748 , H04N1/00777 , H04N2201/0081
Abstract: The image reading apparatus includes a reading unit configured to read the image of the original placed on the platen glass. The image reading apparatus determines whether the original is on the platen glass or not. If it is determined that the original is on the platen glass, the image reading apparatus determines whether the original is blank or not based on the image read by the reading unit. If it is determined that the original is not on the platen glass, or if it is determined that the original is blank, the image reading apparatus notifies the user that the original is not on the platen glass or the original is blank.
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