-
公开(公告)号：US20220317319A1
公开(公告)日：2022-10-06
申请号：US17808170
申请日：2022-06-22
Applicant: CANON KABUSHIKI KAISHA
Inventor： Takuya Ryu , Kentaro Fujiyoshi , Ryosuke Miura
Abstract: A radiation imaging apparatus includes pixels arranged to form pixel rows and pixel columns. The pixels include first pixels and second pixels whose sensitivity to radiation is lower than the first pixels. The apparatus further includes a signal lines arranged to correspond to the pixel columns, a readout circuit configured to read out a signal from the pixels via the signal lines, and a processing unit configured to decide a correction value using signals read out from the second pixels and correct signals read out from the first pixels using the correction value. An internal structure of the readout circuit has a period. The second pixels are arranged such that there are two or more types of remainders of column numbers of pixel columns that include the second pixels divided by the period.
-
公开(公告)号：US20220011452A1
公开(公告)日：2022-01-13
申请号：US17364179
申请日：2021-06-30
Applicant: CANON KABUSHIKI KAISHA
Inventor： Takuya Ryu , Kentaro Fujiyoshi , Ryosuke Miura
Abstract: A radiation imaging apparatus includes pixels arranged to form pixel rows and pixel columns. The pixels include first pixels and second pixels whose sensitivity to radiation is lower than the first pixels. The apparatus further includes a signal lines arranged to correspond to the pixel columns, a readout circuit configured to read out a signal from the pixels via the signal lines, and a processing unit configured to decide a correction value using signals read out from the second pixels and correct signals read out from the first pixels using the correction value. An internal structure of the readout circuit has a period. The second pixels are arranged such that there are two or more types of remainders of column numbers of pixel columns that include the second pixels divided by the period.
-
公开(公告)号：US10716522B2
公开(公告)日：2020-07-21
申请号：US16150523
申请日：2018-10-03
Applicant: CANON KABUSHIKI KAISHA
Inventor： Eriko Sato , Tomoyuki Yagi , Shinichi Takeda , Hideyuki Okada , Takuya Ryu , Katsuro Takenaka
Abstract: A radiation image capturing apparatus is provided. The radiation image capturing apparatus includes an image capturing unit configured to capture a radiation image. The image capturing unit includes a detection element configured to detect radiation. The radiation image capturing apparatus comprises a processor configured to perform, in accordance with an exposure request from a user, a first reset operation of resetting the detection element, and configured to detect an amount of irradiation of the radiation based on a signal from the detection element after the first reset operation.
-
公开(公告)号：US20190029618A1
公开(公告)日：2019-01-31
申请号：US16150523
申请日：2018-10-03
Applicant: CANON KABUSHIKI KAISHA
Inventor： Eriko Sato , Tomoyuki Yagi , Shinichi Takeda , Hideyuki Okada , Takuya Ryu , Katsuro Takenaka
Abstract: A radiation image capturing apparatus is provided. The radiation image capturing apparatus includes an image capturing unit configured to capture a radiation image. The image capturing unit includes a detection element configured to detect radiation. The radiation image capturing apparatus comprises a processor configured to perform, in accordance with an exposure request from a user, a first reset operation of resetting the detection element, and configured to detect an amount of irradiation of the radiation based on a signal from the detection element after the first reset operation.
-
公开(公告)号：US09846245B2
公开(公告)日：2017-12-19
申请号：US15037632
申请日：2014-10-30
Applicant: CANON KABUSHIKI KAISHA
Inventor： Katsuro Takenaka , Toshio Kameshima , Tomoyuki Yagi , Atsushi Iwashita , Eriko Sato , Hideyuki Okada , Takuya Ryu , Kosuke Terui , Takashi Takasaki
IPC: G01T1/20 , H04N5/32 , H01L27/146
CPC classification number: G01T1/2006 , G01T1/2018 , H01L27/14603 , H01L27/14607 , H01L27/14625 , H01L27/14636 , H01L27/14663 , H04N5/32
Abstract: A radiographic image capturing apparatus includes: a pixel array in which a plurality of pixels outputting an electrical signal corresponding to radiation are arranged; a readout circuit section; and a member for preventing radiation from entering the readout circuit section. The pixel array includes a first region in which some pixels used for generating image signals are arranged, and a second region in which other pixels not used for generating the image signals are arranged in at least part of a region around the first region. From an outer side toward an inner side of the pixel array, an end on the inner side of the readout circuit section disposed in the second region, an end on the inner side of an orthogonal projection of the member to the pixel array, and an end on the inner side of the second region are arranged in this order.
-
Patent Agency Ranking
公开(公告)号：US09470800B2
公开(公告)日：2016-10-18
申请号：US14189229
申请日：2014-02-25
Applicant: CANON KABUSHIKI KAISHA
Inventor： Atsushi Iwashita , Toshio Kameshima , Tomoyuki Yagi , Katsuro Takenaka , Hideyuki Okada , Sho Sato , Eriko Sato , Takuya Ryu
IPC: H01L27/146 , G01T1/16 , H04N5/32
CPC classification number: G01T1/16 , H04N5/32 , H04N5/3205
Abstract: A radiation imaging apparatus includes a pixel array having pixels including conversion elements and switching elements, a bias line for supplying a bias potential to the conversion elements; driving lines for supplying a signal to control the switching elements, a driving unit for performing an initialization operation of supplying a driving signal to each driving line group, switching each driving signal from an OFF voltage to an ON voltage, and then returning the driving signal to the OFF voltage; an acquisition unit configured to acquire a plurality of times in each driving cycle a signal value representing a current flowing through the bias line; a calculation unit configured to calculate radiation information based on the signal values; and a determination unit configured to determine whether irradiation of the pixel array with radiation is present based on the radiation information.
Abstract translation: 辐射摄像装置包括像素阵列，具有包括转换元件和开关元件的像素，用于向转换元件提供偏置电位的偏置线; 用于提供信号以控制开关元件的驱动线;驱动单元，用于执行向每个驱动线组提供驱动信号的初始化操作，将每个驱动信号从OFF电压切换到ON电压，然后返回驱动信号 到OFF电压; 获取单元，被配置为在每个驱动周期中获取表示流过所述偏置线的电流的信号值; 计算单元，被配置为基于所述信号值来计算辐射信息; 以及确定单元，被配置为基于所述辐射信息确定是否存在具有辐射的所述像素阵列的照射。
-
公开(公告)号：US20160134818A1
公开(公告)日：2016-05-12
申请号：US14903271
申请日：2014-07-07
Applicant: CANON KABUSHIKI KAISHA
Inventor： Atsushi Iwashita , Toshio Kameshima , Tomoyuki Yagi , Katsuro Takenaka , Hideyuki Okada , Sho Sato , Eriko Sato , Takuya Ryu
IPC: H04N5/32
CPC classification number: H04N5/32 , A61B6/4233 , A61B6/585 , H04N5/361
Abstract: A radiation imaging system capable of obtaining excellent image quality is provided. The radiation imaging system includes a detection unit (205) configured to include a plurality of pixels which are arranged in a matrix and which output pixel values by converting radial rays into charges and to output image information, driving control means (204) for causing the plurality of pixels to perform a resetting operation until a signal indicating irradiation with radial rays is supplied and to stop the resetting operation and perform an operation of accumulating charges when the signal indicating irradiation with radial rays is supplied, and for performing an operation of reading pixel values of the plurality of pixels after the irradiation with radial rays is terminated so as to output image information corresponding to the irradiation with radial rays, correction coefficient obtaining means (207) for calculating correction coefficients in accordance with the image information output from the detection unit, and image correction means (208) for correcting the image information output from the detection unit using the correction coefficients calculated by the correction coefficient obtaining means.
Abstract translation: 提供能够获得优异图像质量的辐射成像系统。 辐射成像系统包括：检测单元，被配置为包括排列成矩阵的多个像素，并且通过将径向射线转换为电荷并输出图像信息来输出像素值;驱动控制装置， 多个像素执行复位操作，直到提供了表示径向射线照射的信号，并且停止复位操作，并且当提供表示径向射线照射的信号时，执行积累电荷的操作，并且用于执行读取像素 终止放射线照射后的多个像素的值，输出与放射线照射对应的图像信息，根据从检测部输出的图像信息计算校正系数的校正系数求取单元（207） ，以及用于校正图像信息的图像校正装置（208） 使用由校正系数获取装置计算的校正系数从检测单元输出。
-
公开(公告)号：US20140285689A1
公开(公告)日：2014-09-25
申请号：US14211970
申请日：2014-03-14
Applicant: CANON KABUSHIKI KAISHA
Inventor： Takuya Ryu , Toshio Kameshima , Tomoyuki Yagi , Katsuro Takenaka , Sho Sato , Atsushi Iwashita , Eriko Sato , Hideyuki Okada
CPC classification number: A61B6/5258 , A61B6/42 , A61B6/52 , A61B6/5205 , A61B6/585 , G01T1/2018 , G01T7/005 , G06T5/002 , G06T5/50 , H04N5/2173 , H04N5/32 , H04N5/3205 , H04N5/325 , H04N5/347 , H04N5/357 , H04N5/378
Abstract: An imaging system comprises: a plurality of pixels each for converting light, converted from radiation by a conversion unit, into an electrical signal; an extracting unit that extracts, based on an image formed based on output signals from the pixels, a pixel with noise generated by the radiation that has transmitted through the conversion unit to arrive at the pixels; and a correcting unit that performs correction to remove the noise with respect to an output signal from the extracted pixel, wherein the extracting unit extracts the pixel with the noise by performing division between first and second images, the first image being formed based on the output signals from the pixels in accordance with the radiation to the conversion unit during a first period, the second image being formed based on these output signals in accordance with that radiation during a second period after the first period.
Abstract translation: 成像系统包括：多个像素，每个像素用于将由转换单元的辐射转换的光转换成电信号; 提取单元，其基于基于来自所述像素的输出信号形成的图像提取具有通过所述转换单元发送的辐射产生的噪声以获得所述像素的像素; 以及校正单元，执行相对于来自所提取的像素的输出信号去除噪声的校正，其中提取单元通过执行第一和第二图像之间的划分来提取具有噪声的像素，基于输出形成第一图像 在第一时段期间根据辐射对所述转换单元的像素的信号，所述第二图像基于在所述第一周期之后的第二周期期间根据所述辐射的这些输出信号形成。
-
公开(公告)号：US09743018B2
公开(公告)日：2017-08-22
申请号：US14903271
申请日：2014-07-07
Applicant: CANON KABUSHIKI KAISHA
Inventor： Atsushi Iwashita , Toshio Kameshima , Tomoyuki Yagi , Katsuro Takenaka , Hideyuki Okada , Sho Sato , Eriko Sato , Takuya Ryu
CPC classification number: H04N5/32 , A61B6/4233 , A61B6/585 , H04N5/361
Abstract: A radiation imaging system capable of obtaining excellent image quality is provided. The radiation imaging system includes a detection unit (205) configured to include a plurality of pixels which are arranged in a matrix and which output pixel values by converting radial rays into charges and to output image information, driving control means (204) for causing the plurality of pixels to perform a resetting operation until a signal indicating irradiation with radial rays is supplied and to stop the resetting operation and perform an operation of accumulating charges when the signal indicating irradiation with radial rays is supplied, and for performing an operation of reading pixel values of the plurality of pixels after the irradiation with radial rays is terminated so as to output image information corresponding to the irradiation with radial rays, correction coefficient obtaining means (207) for calculating correction coefficients in accordance with the image information output from the detection unit, and image correction means (208) for correcting the image information output from the detection unit using the correction coefficients calculated by the correction coefficient obtaining means.
-
公开(公告)号：US09541653B2
公开(公告)日：2017-01-10
申请号：US14189281
申请日：2014-02-25
Applicant: CANON KABUSHIKI KAISHA
Inventor： Atsushi Iwashita , Toshio Kameshima , Tomoyuki Yagi , Katsuro Takenaka , Hideyuki Okada , Sho Sato , Eriko Sato , Takuya Ryu
CPC classification number: G01T1/17 , G01T1/247 , H04N5/32 , H04N5/357 , H04N5/3575 , H04N5/3577 , H04N5/378
Abstract: A radiation imaging apparatus includes a pixel array in which a plurality of pixels which detects radiation are arrayed to form a plurality of rows and a plurality of columns, a detection circuit which detects information having correlation to a radiation dose to the pixel array and output a detection signal corresponding to the information, and a control unit which detects radiation irradiation to the pixel array based on a plurality of integrated values obtained by integrating one of the detection signal and a result of processing applied to the detection signal in a plurality of integral intervals and control the pixel array in accordance with the detection.
Abstract translation: 一种放射线摄像装置，包括：像素阵列，其中多个检测辐射的像素排列成多个行和多个列;检测电路，检测与像素阵列的辐射剂量相关的信息，并输出一个 检测信号，以及控制单元，其基于通过将检测信号和应用于检测信号的处理结果中的一个积分在多个积分间隔中而获得的多个积分值来检测对像素阵列的辐射照射 并根据检测来控制像素阵列。
-
-
-
-
-
-
-
-
-
Search Results
55
records
(took 0.023 seconds)
