公开(公告)号：US20220385388A1

公开(公告)日：2022-12-01

申请号：US17730439

申请日：2022-04-27

Applicant: CANON KABUSHIKI KAISHA

Inventor： Daisuke Morikawa

IPC: H04J3/06 ,  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. The received packet skew adjusting unit detects the header information of the data received in each lane, writes the data main body of the received data to a data buffer at a detection timing, and starts data transfer from the data buffer to the outside at a timing when a writing access of the data main body of a predetermined number of cycles is completed in each lane.

公开(公告)号：US10044890B2

公开(公告)日：2018-08-07

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

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.

公开(公告)号：US20170026548A1

公开(公告)日：2017-01-26

申请号：US15287784

申请日：2016-10-07

Applicant: CANON KABUSHIKI KAISHA

Inventor： Daisuke Morikawa

IPC: H04N1/409 ,  H04N1/00

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.

Abstract translation: 一种图像读取装置，其能够减少灰尘对白色参考图表本身的影响，由灰尘引起的条纹等，从而生成准确的阴影校正数据。 图像处理器对由读取器单元读取的图像数据执行阴影校正。 将读取的图像数据与为每个像素设置的阈值进行比较，并且将超出阈值范围的像素确定为奇异点像素。 由奇数点像素周围的数据插值确定为奇点像素的像素的数据。 将未被确定为奇点像素的像素的数据用作有效阴影校正数据。 操作控制器控制从执行开始到终止采样的有效采样线数。

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。

公开(公告)号：US08966354B2

公开(公告)日：2015-02-24

申请号：US13897019

申请日：2013-05-17

Applicant: Canon Kabushiki Kaisha

Inventor： Daisuke Morikawa

IPC: G06F11/10 ,  H03M13/09 ,  H03M9/00 ,  H04L29/06 ,  H04L12/46 ,  H04L1/00 ,  H04L12/40

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。

公开(公告)号：US20170353612A1

公开(公告)日：2017-12-07

申请号：US15603632

申请日：2017-05-24

Applicant: CANON KABUSHIKI KAISHA

Inventor： Daisuke Morikawa

IPC: H04N1/00 ,  H04N1/193 ,  H04N1/028

CPC classification number: H04N1/00037 ,  H04N1/00602 ,  H04N1/00798 ,  H04N1/02815 ,  H04N1/193 ,  H04N2201/0094

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.

公开(公告)号：US20170064138A1

公开(公告)日：2017-03-02

申请号：US15222680

申请日：2016-07-28

Applicant: CANON KABUSHIKI KAISHA

Inventor： Daisuke Morikawa

IPC: H04N1/401 ,  H04N1/48 ,  H04N1/193

CPC classification number: H04N1/401 ,  H04N1/00023 ,  H04N1/193 ,  H04N1/4097 ,  H04N1/486

Abstract: An apparatus comprises: a determination unit that determines whether target pixel data of a reference member is a singularity pixel; a counter that counts the number of pixel data that is not determined as the singularity pixel, for each of main-scanning positions; a summation unit that cumulatively sums the target pixel data not determined as the singularity pixel, for each of the main-scanning positions; and a calculation unit that, for each of the main-scanning positions, causes the summation unit to cumulatively sum the target pixel data not determined as the singularity pixel if a count value corresponding to a main-scanning position of the target pixel data is smaller than a predetermined number, and calculates shading correction data using data that the predetermined number of pixel data not determined as the singularity pixel are cumulatively summed.

Abstract translation: 一种装置，包括：确定单元，确定参考构件的目标像素数据是否是奇点像素; 对于每个主扫描位置，对未被确定为奇异像素的像素数据的数量进行计数的计数器; 对于每个主扫描位置，对未被确定为奇异像素的目标像素数据累加求和单元; 以及计算单元，对于每个所述主扫描位置，如果与所述目标像素数据的主扫描位置相对应的计数值较小，则所述求和单元对未被确定为所述奇异像素的目标像素数据进行累积求和 并且使用未被确定为奇异像素的预定数量的像素数据被累积相加的数据来计算阴影校正数据。

公开(公告)号：US09491321B2

公开(公告)日：2016-11-08

申请号：US14676206

申请日：2015-04-01

Applicant: CANON KABUSHIKI KAISHA

Inventor： Daisuke Morikawa

IPC: H04N1/04 ,  H04N1/00

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.

Abstract translation: 一种图像读取装置，其能够减少灰尘对白色参考图表本身的影响，由灰尘引起的条纹等，从而生成准确的阴影校正数据。 图像处理器对由读取器单元读取的图像数据执行阴影校正。 将读取的图像数据与为每个像素设置的阈值进行比较，并且将超出阈值范围的像素确定为奇异点像素。 由奇数点像素周围的数据插值确定为奇点像素的像素的数据。 将未被确定为奇点像素的像素的数据用作有效阴影校正数据。 操作控制器控制从执行开始到终止采样的有效采样线数。

公开(公告)号：US20140025936A1

公开(公告)日：2014-01-23

申请号：US13940094

申请日：2013-07-11

Applicant: CANON KABUSHIKI KAISHA

Inventor： Daisuke Morikawa

IPC: G06F9/30

CPC classification number: G06F9/30145 ,  G05B19/0428 ,  G05B2219/23282 ,  H04L1/08

Abstract: A control apparatus configured to receive instruction data from a transmission unit and to control a controlled apparatus based on the instruction data includes a determination unit configured to determine an error in reception of the instruction data from the transmission unit, a communication unit configured to receive the instruction data from the transmission unit and to transmit reply data according to a result of determination of the determination unit to the transmission unit, a module configured to control the controlled apparatus based on the instruction data, and a control unit configured to, if a content of current instruction data received by the communication unit matches a content of previous instruction data received by the communication unit, control the module not to control the controlled apparatus based on the current instruction data.

Abstract translation: 一种控制装置，被配置为从发送单元接收指令数据并基于指令数据来控制受控装置，包括：确定单元，被配置为从所述发送单元确定所述指令数据的接收中的错误;通信单元，被配置为： 来自所述发送单元的指令数据，并且根据所述确定单元对所述发送单元的确定的结果发送应答数据;模块，被配置为基于所述指令数据来控制所述受控设备;以及控制单元，被配置为，如果所述内容 由通信单元接收的当前指令数据与由通信单元接收的先前指令数据的内容相匹配，基于当前指令数据控制不控制受控设备的模块。

公开(公告)号：US11140295B2

公开(公告)日：2021-10-05

申请号：US17010686

申请日：2020-09-02

Applicant: CANON KABUSHIKI KAISHA

Inventor： Daisuke Morikawa

IPC: G06K9/36 ,  H04N1/387 ,  H04N1/00

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.