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公开(公告)号：US09812474B2
公开(公告)日：2017-11-07
申请号：US14665045
申请日：2015-03-23
Applicant: CANON KABUSHIKI KAISHA
Inventor： Tomoyuki Yagi , Toshio Kameshima , Katsuro Takenaka , Sho Sato , Hideyuki Okada , Atsushi Iwashita , Eriko Sato , Takuya Ryu
IPC: H01L27/146 , H04N5/3745 , H04N5/341 , H04N5/365 , H04N5/376 , G01T1/17 , H04N5/32 , H04N5/357 , H04N5/363 , H04N5/378
CPC classification number: H01L27/14609 , G01T1/17 , H04N5/32 , H04N5/341 , H04N5/3575 , H04N5/363 , H04N5/3651 , H04N5/3658 , H04N5/3745 , H04N5/3765 , H04N5/378
Abstract: An imaging apparatus includes a pixel that generates charge; an integral amplifier that integrates charge transferred from the pixel; a low pass filter to which output of the integral amplifier is supplied and whose time constant is variable; first and second sample-and-hold circuits that sample and hold output of the low pass filter before and after the charge is transferred from the pixel to the integral amplifier, respectively; a differential circuit that outputs a difference between signals held by the first and second sample-and-hold circuits; and a control circuit that changes the time constant. The control circuit decreases the time constant after the sampling by the first sample-and-hold circuit ends, and increases the time constant in the middle of the sampling by the second sample-and-hold circuit.
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32.发明申请公开(公告)号：US20170285189A1
公开(公告)日：2017-10-05
申请号：US15446187
申请日：2017-03-01
Applicant: CANON KABUSHIKI KAISHA
Inventor： Takuya Ryu , Tomoyuki Yagi , Katsuro Takenaka , Hideyuki Okada , Eriko Sato , Shinichi Takeda
Abstract: A radiation imaging apparatus includes a pixel array, a scanning circuit for scanning a plurality of rows of the pixel array in accordance with a selected mode of a plurality of modes, and a readout circuit configured to read out signals from pixels on a selected row in scanning by the scanning circuit. The plurality of modes include a first mode of performing image capturing at a first frame rate and a second mode of performing image capturing at a second frame rate lower than the first frame rate. The number of times of scanning on the plurality of rows by the scanning circuit in one frame period in the second mode is larger than that of scanning on the plurality of rows by the scanning circuit in one frame period in the first mode.
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公开(公告)号：US09655586B2
公开(公告)日：2017-05-23
申请号：US14797391
申请日：2015-07-13
Applicant: CANON KABUSHIKI KAISHA
Inventor： Tomoyuki Yagi , Toshio Kameshima , Katsuro Takenaka , Atsushi Iwashita , Eriko Sato , Hideyuki Okada , Takuya Ryu , Kosuke Terui
CPC classification number: A61B6/585 , A61B6/4266 , G01T1/17 , H03F3/45475 , H03F3/70 , H03F2203/45514 , H03F2203/45634 , H04N5/32 , H04N5/355 , H04N5/378
Abstract: Provided is a radiation imaging apparatus, including: a first conversion element arranged to convert a radiation ray into electric charge in order to obtain a radiographic image; a first amplifier arranged to output a voltage corresponding to the electric charge of the first conversion element; a second conversion element arranged to convert the radiation ray into electric charge in order to detect radiation irradiation; a second amplifier arranged to output a voltage corresponding to the electric charge of the second conversion element; and a control circuit configured to control the first amplifier and the second amplifier, in which the control circuit is capable of controlling the second amplifier independently of control that is exerted over the first amplifier.
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公开(公告)号：US09645259B2
公开(公告)日：2017-05-09
申请号：US14207008
申请日：2014-03-12
Applicant: CANON KABUSHIKI KAISHA
Inventor： Toshio Kameshima , Tomoyuki Yagi , Katsuro Takenaka , Sho Sato , Atsushi Iwashita , Eriko Sato , Hideyuki Okada , Takuya Ryu , Kosuke Terui
IPC: G01T1/24 , H01L27/146 , H04N5/32
CPC classification number: G01T1/247 , H01L27/146 , H04N5/32
Abstract: A radiation image pickup apparatus includes a pixel array including a plurality of pixels arranged in a matrix and configured to convert a radiant ray into electric signals, signal processors configured to output digital signals obtained in accordance with the electric signals output from the pixel array in parallel, and a controller configured to operate the signal processors after the signal processors enter a second power consumption state in which power consumption is higher than that of a first power consumption state from the first power consumption state after irradiation of a radiant ray to the pixel array is terminated, and to cause the signal processors to output digital signals after the signal processors are operated.
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公开(公告)号：US20160015358A1
公开(公告)日：2016-01-21
申请号：US14797391
申请日：2015-07-13
Applicant: CANON KABUSHIKI KAISHA
Inventor： Tomoyuki Yagi , Toshio Kameshima , Katsuro Takenaka , Atsushi Iwashita , Eriko Sato , Hideyuki Okada , Takuya Ryu , Kosuke Terui
CPC classification number: A61B6/585 , A61B6/4266 , G01T1/17 , H03F3/45475 , H03F3/70 , H03F2203/45514 , H03F2203/45634 , H04N5/32 , H04N5/355 , H04N5/378
Abstract: Provided is a radiation imaging apparatus, including: a first conversion element arranged to convert a radiation ray into electric charge in order to obtain a radiographic image; a first amplifier arranged to output a voltage corresponding to the electric charge of the first conversion element; a second conversion element arranged to convert the radiation ray into electric charge in order to detect radiation irradiation; a second amplifier arranged to output a voltage corresponding to the electric charge of the second conversion element; and a control circuit configured to control the first amplifier and the second amplifier, in which the control circuit is capable of controlling the second amplifier independently of control that is exerted over the first amplifier.
Abstract translation: 本发明提供一种放射线摄像装置，包括：第一转换元件，被配置为将放射线转换成电荷以获得放射线图像; 第一放大器，布置成输出与所述第一转换元件的电荷相对应的电压; 第二转换元件，被布置成将辐射线转换成电荷以检测辐射照射; 第二放大器，布置成输出与所述第二转换元件的电荷相对应的电压; 以及控制电路，被配置为控制所述第一放大器和所述第二放大器，其中所述控制电路能够独立于在所述第一放大器上施加的控制来控制所述第二放大器。
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Patent Agency Ranking
公开(公告)号：US20150338530A1
公开(公告)日：2015-11-26
申请号：US14714600
申请日：2015-05-18
Applicant: CANON KABUSHIKI KAISHA
Inventor： Hideyuki Okada , Toshio Kameshima , Tomoyuki Yagi , Katsuro Takenaka , Atsushi Iwashita , Eriko Sato , Takuya Ryu , Kosuke Terui
Abstract: A radiographic image capturing apparatus, comprising a plurality of sensors arrayed on a substrate, a driving unit, a detection unit and a control unit, wherein the control unit is configured to perform a first control controlling the driving unit so as to repeatedly initialize the plurality of sensors on a row-by-row basis before a start of emission of radiation, and a second control controlling the driving unit so as to interrupt the initialization in response to a detection signal from the detection unit and cause the plurality of sensors to output signals, and the apparatus further comprises a determination unit configured to determine whether or not the detection signal is a signal which was output in response to the start of emission of radiation.
Abstract translation: 一种放射线照相图像拍摄装置，包括排列在基板上的多个传感器，驱动单元，检测单元和控制单元，其中，所述控制单元被配置为执行控制所述驱动单元的第一控制，以便重复地初始化所述多个 在发射辐射开始之前以行为单位的传感器，以及控制驱动单元的第二控制，以便响应于来自检测单元的检测信号中断初始化，并且使多个传感器输出 信号，并且该装置还包括确定单元，其被配置为确定检测信号是否是响应于辐射的开始而被输出的信号。
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公开(公告)号：US20140361189A1
公开(公告)日：2014-12-11
申请号：US14290479
申请日：2014-05-29
Applicant: CANON KABUSHIKI KAISHA
Inventor： Toshio Kameshima , Tomoyuki Yagi , Katsuro Takenaka , Sho Sato , Atsushi Iwashita , Eriko Sato , Hideyuki Okada , Takuya Ryu
IPC: G01T1/29
CPC classification number: H04N5/32 , A61B6/4233 , A61B6/5205 , A61B6/585 , H04N5/3765 , H04N5/378
Abstract: A radiation imaging system includes: a sensor unit including a plurality of pixels arranged in a matrix, and configured to convert a radiation into an electric charge and to output a pixel output value; a detecting unit configured to detect an irradiation start of the radiation; and a control unit configured to output image information based on the irradiation of the radiation and to output dark image information for the plurality of pixels.
Abstract translation: 辐射成像系统包括：传感器单元，包括以矩阵排列的多个像素，并且被配置为将辐射转换成电荷并输出像素输出值; 检测单元，被配置为检测所述辐射的照射开始; 以及控制单元，被配置为基于所述辐射的照射来输出图像信息并输出所述多个像素的暗图像信息。
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公开(公告)号：US20140320685A1
公开(公告)日：2014-10-30
申请号：US14251965
申请日：2014-04-14
Applicant: CANON KABUSHIKI KAISHA
Inventor： Katsuro Takenaka , Toshio Kameshima , Tomoyuki Yagi , Sho Sato , Atsushi Iwashita , Eriko Sato , Hideyuki Okada , Takuya Ryu
IPC: H04N5/232
Abstract: An imaging apparatus, comprising a sensor array in which a plurality of sensors are arrayed, a first readout unit configured to read out, from each of the plurality of sensors, a first signal corresponding to an amount of one of an electron and a hole of each of electron-hole pairs generated in the sensor array in response to irradiation with radiation or light, and a second readout unit configured to read out, from each of the plurality of sensors, a second signal corresponding to an amount of the other of the electron and the hole of the electron-hole pairs.
Abstract translation: 一种成像装置，包括其中排列有多个传感器的传感器阵列，第一读出单元，被配置为从多个传感器中的每一个读出对应于电子和孔中的一个的量的第一信号 响应于辐射或光的照射在传感器阵列中产生的每个电子 - 空穴对，以及第二读出单元，其被配置为从多个传感器中的每一个读出对应于另一个的量的第二信号 电子和电子 - 空穴对的孔。
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公开(公告)号：US20140241506A1
公开(公告)日：2014-08-28
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: G01T1/16
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。
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公开(公告)号：US20140239187A1
公开(公告)日：2014-08-28
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
IPC: G01T1/17
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。
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