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公开(公告)号：US09423512B2
公开(公告)日：2016-08-23
申请号：US14189249
申请日：2014-02-25
Applicant: CANON KABUSHIKI KAISHA
Inventor： Eriko Sato , Toshio Kameshima , Tomoyuki Yagi , Katsuro Takenaka , Hideyuki Okada , Sho Sato , Atsushi Iwashita , Takuya Ryu
Abstract: A radiation imaging apparatus includes a pixel array having pixels, a bias line applying a bias potential to converters of the pixels, a detection circuit which detects a current flowing to the bias line, and a control unit which detects a start of radiation irradiation to the pixel array based on an output from the detection circuit and controls a charge accumulation operation of the pixels in accordance with the detection. The detection circuit includes a differential amplifier circuit and a feedback path, and applies a potential corresponding to a reference bias potential to the bias line. The differential amplifier circuit includes a first input terminal receiving the reference bias potential, a second input terminal connected to the bias line, and an output terminal, and the feedback path connects the output terminal and the second input terminal.
Abstract translation: 辐射成像装置包括具有像素的像素阵列，向像素的转换器施加偏置电位的偏置线，检测流向偏置线的电流的检测电路，以及检测对该偏移线的照射开始的控制部 基于来自检测电路的输出的像素阵列，并且根据检测来控制像素的电荷累积操作。 检测电路包括差分放大器电路和反馈路径，并将对应于参考偏置电位的电位施加到偏置线。 差分放大电路包括接收参考偏置电位的第一输入端，连接到偏置线的第二输入端和输出端，反馈路径连接输出端和第二输入端。
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公开(公告)号：US20160084969A1
公开(公告)日：2016-03-24
申请号：US14849735
申请日：2015-09-10
Applicant: CANON KABUSHIKI KAISHA
Inventor： Eriko Sato , Toshio Kameshima , Tomoyuki Yagi , Katsuro Takenaka , Atsushi Iwashita , Hideyuki Okada , Takuya Ryu , Kosuke Terui
IPC: G01T1/24
CPC classification number: G01T1/247 , G01T1/241 , H04N5/32 , H04N5/3205 , H04N5/361
Abstract: A radiation imaging apparatus includes a pixel array where a plurality of pixels configured to detect radiation are arrayed, a sensor configured to detect radiation irradiation for exposure control, a reader configured to read out signals from the plurality of pixels and the sensor, and a processor configured to process the signals read out by the reader. The processor corrects, based on the signals read out from the sensor by the reader, the signals read out from the plurality of pixels by the reader.
Abstract translation: 一种放射线成像装置，包括排列有被配置为检测辐射的多个像素的像素阵列，被配置为检测用于曝光控制的放射线照射的传感器，被配置为从多个像素读出信号的读取器和传感器，以及处理器 配置为处理由读取器读出的信号。 处理器基于读取器从传感器读出的信号校正由读取器从多个像素读出的信号。
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公开(公告)号：US20160021290A1
公开(公告)日：2016-01-21
申请号：US14801549
申请日：2015-07-16
Applicant: CANON KABUSHIKI KAISHA
Inventor： Tomoyuki Yagi , Toshio Kameshima , Katsuro Takenaka , Atsushi Iwashita , Eriko Sato , Hideyuki Okada , Takuya Ryu , Kosuke Terui
Abstract: A radiation image capturing apparatus, comprising a sensor configured to monitor an irradiating dose of radiation, a switch configured output a sensor signal from the sensor, a readout unit configured to read out the sensor signal via a signal line, and a controlling unit, wherein the controlling unit performs first control of repeatedly performing, while the sensor is irradiated, a series of operations including a first operation of setting the switch to a conductive state and a second operation of setting the switch to a non-conductive state, second control of reading out the sensor signal in the first operation as a first signal and a potential of the signal line in the second operation as a second signal, and third control of calculating the irradiating dose of radiation based on the first signal and the second signal.
Abstract translation: 一种放射线图像捕获装置，包括被配置为监测辐射照射剂量的传感器，配置为从传感器输出传感器信号的开关，经配置以经由信号线读出传感器信号的读出单元和控制单元，其中 控制单元执行在传感器被照射时重复执行包括将开关设置为导通状态的第一操作和将开关设置为非导通状态的第二操作的一系列操作的第一控制，第二控制 在第一操作中将传感器信号作为第一信号和第二操作中的信号线的电位读出为第二信号，以及基于第一信号和第二信号计算辐射照射剂量的第三控制。
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公开(公告)号：US09128196B2
公开(公告)日：2015-09-08
申请号：US14292230
申请日：2014-05-30
Applicant: CANON KABUSHIKI KAISHA
Inventor： Sho Sato , Toshio Kameshima , Tomoyuki Yagi , Katsuro Takenaka , Hideyuki Okada , Atsushi Iwashita , Eriko Sato , Takuya Ryu
CPC classification number: G01T1/247 , G01T1/2928 , H04N5/32
Abstract: A radiation imaging apparatus comprises a conversion element and a transistor. A drive unit performs a reset operation at a plurality of times, by supplying a conducting voltage to gates of the transistors, successively, one row by one row, an operation of stopping the supplying of the conducting voltage responsive to detecting the irradiation of the radiation to perform an accumulation operation and, after the reset operation, a read out operation. During the reset operation, a period between the supplying the conducting voltage to the gates of the transistors in one row and the supplying the conducting voltage subsequently to the gates of the transistors in another row is different from a period between the supplying the conducting voltage to the gates of the transistors in the another row and the supplying the conducting voltage subsequently to the gates of the transistors in further another row.
Abstract translation: 辐射成像装置包括转换元件和晶体管。 驱动单元通过依次向所述晶体管的栅极依次提供一行一行的方式，多次执行复位操作，响应于检测到所述辐射的照射而停止提供所述导通电压的操作 执行累加操作，并且在复位操作之后进行读出操作。 在复位操作期间，向一行中的晶体管的栅极提供导通电压并且随后向另一行中的晶体管的栅极提供导通电压之间的周期不同于将导通电压提供给 在另一行中的晶体管的栅极，并且在另一行中向晶体管的栅极提供导通电压。
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公开(公告)号：US20140361184A1
公开(公告)日：2014-12-11
申请号：US14292230
申请日：2014-05-30
Applicant: CANON KABUSHIKI KAISHA
Inventor： Sho Sato , Toshio Kameshima , Tomoyuki Yagi , Katsuro Takenaka , Hideyuki Okada , Atsushi Iwashita , Eriko Sato , Takuya Ryu
IPC: G01T1/24
CPC classification number: G01T1/247 , G01T1/2928 , H04N5/32
Abstract: A radiation imaging apparatus comprises a conversion element and a transistor. A drive unit performs a reset operation at a plurality of times, by supplying a conducting voltage to gates of the transistors, successively, one row by one row, an operation of stopping the supplying of the conducting voltage responsive to detecting the irradiation of the radiation to perform an accumulation operation and, after the reset operation, a read out operation. During the reset operation, a period between the supplying the conducting voltage to the gates of the transistors in one row and the supplying the conducting voltage subsequently to the gates of the transistors in another row is different from a period between the supplying the conducting voltage to the gates of the transistors in the another row and the supplying the conducting voltage subsequently to the gates of the transistors in further another row.
Abstract translation: 辐射成像装置包括转换元件和晶体管。 驱动单元通过依次向所述晶体管的栅极依次提供一行一行的方式，多次执行复位操作，响应于检测到辐射的照射而停止提供导通电压的操作 执行累加操作，并且在复位操作之后进行读出操作。 在复位操作期间，向一行中的晶体管的栅极提供导通电压并且随后向另一行中的晶体管的栅极提供导通电压之间的周期不同于将导通电压提供给 在另一行中的晶体管的栅极，并且在另一行中向晶体管的栅极提供导通电压。
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Patent Agency Ranking
公开(公告)号：US20140241501A1
公开(公告)日：2014-08-28
申请号：US14189249
申请日：2014-02-25
Applicant: CANON KABUSHIKI KAISHA
Inventor： Eriko Sato , Toshio Kameshima , Tomoyuki Yagi , Katsuro Takenaka , Hideyuki Okada , Sho Sato , Atsushi Iwashita , Takuya Ryu
IPC: G01T1/17
Abstract: A radiation imaging apparatus includes a pixel array having pixels, a bias line applying a bias potential to converters of the pixels, a detection circuit which detects a current flowing to the bias line, and a control unit which detects a start of radiation irradiation to the pixel array based on an output from the detection circuit and controls a charge accumulation operation of the pixels in accordance with the detection. The detection circuit includes a differential amplifier circuit and a feedback path, and applies a potential corresponding to a reference bias potential to the bias line. The differential amplifier circuit includes a first input terminal receiving the reference bias potential, a second input terminal connected to the bias line, and an output terminal, and the feedback path connects the output terminal and the second input terminal.
Abstract translation: 辐射成像装置包括具有像素的像素阵列，向像素的转换器施加偏置电位的偏置线，检测流向偏置线的电流的检测电路，以及检测对该偏移线的照射开始的控制部 基于来自检测电路的输出的像素阵列，并且根据检测来控制像素的电荷累积操作。 检测电路包括差分放大器电路和反馈路径，并将对应于参考偏置电位的电位施加到偏置线。 差分放大电路包括接收参考偏置电位的第一输入端，连接到偏置线的第二输入端和输出端，反馈路径连接输出端和第二输入端。
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公开(公告)号：US20140185764A1
公开(公告)日：2014-07-03
申请号：US14138918
申请日：2013-12-23
Applicant: CANON KABUSHIKI KAISHA
Inventor： Katsuro Takenaka , Toshio Kameshima , Tomoyuki Yagi , Sho Sato , Atsushi Iwashita , Eriko Sato , Hideyuki Okada , Takuya Ryu
IPC: A61B6/00
Abstract: An imaging apparatus has an AEC function that can prevent irregularities in photographed images, without being increased in size. The imaging apparatus comprises a plurality of pixels arranged in a matrix shape, each of the plurality of pixels including a conversion element for converting radiation or light into an electric charge, a plurality of lines that are connected to the plurality of pixel units and that extend in different directions to each other, a current monitor circuit that monitors currents flowing in the plurality of lines, and an arithmetic unit that calculates a two-dimensional distribution by performing back-projection processing with respect to the currents flowing in the plurality of lines monitored by the current monitor circuit.
Abstract translation: 成像装置具有能够防止拍摄图像中的不规则性而不增加尺寸的AEC功能。 成像装置包括以矩阵形状排列的多个像素，所述多个像素中的每一个包括用于将辐射或光转换成电荷的转换元件，连接到所述多个像素单元并且延伸的多条线 在彼此不同的方向上，监视在多条线路中流动的电流的电流监视电路，以及运算单元，该运算单元通过对在所监视的多条线路中流动的电流进行反向投影处理来计算二维分布 由电流监视电路。
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公开(公告)号：USRE49401E1
公开(公告)日：2023-01-31
申请号：US16103150
申请日：2018-08-14
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
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.
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19.发明授权公开(公告)号：US10416323B2
公开(公告)日：2019-09-17
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：US09980685B2
公开(公告)日：2018-05-29
申请号：US15643681
申请日：2017-07-07
Applicant: CANON KABUSHIKI KAISHA
Inventor： Atsushi Iwashita , Toshio Kameshima , Tomoyuki Yagi , Katsuro Takenaka , Hideyuki Okada , Eriko Sato , Takuya Ryu , Kosuke Terui
CPC classification number: A61B6/4208 , A61B6/4233 , A61B6/5258 , A61B6/542 , H04N5/32 , H04N5/3205 , H04N5/361
Abstract: A radiation imaging apparatus comprising a plurality of sensors arrayed to form a plurality of rows and a plurality of columns on a substrate and a driving unit configured to drive the plurality of sensors row by row, wherein the driving unit performs a first operation of driving the plurality of sensors while selecting the plurality of rows in a first order, and a second operation of driving the plurality of sensors while selecting the plurality of rows in a second order different from the first order after the first operation, such that a time difference is produced between a sensor in each row and a sensor in a neighboring row from the selection in the first order to the selection in the second order.
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