公开(公告)号：US20050199834A1

公开(公告)日：2005-09-15

申请号：US11079504

申请日：2005-03-11

申请人： Katsuro Takenaka ,  Tadao Endo ,  Tomoyuki Yagi ,  Toshio Kameshima

发明人： Katsuro Takenaka ,  Tadao Endo ,  Tomoyuki Yagi ,  Toshio Kameshima

IPC分类号： G01T1/00 ,  G01T1/20 ,  G01T1/24 ,  G21K4/00 ,  H01L25/00 ,  H01L27/14 ,  H01L27/146 ,  H01L31/09 ,  H04N5/32 ,  H04N5/335 ,  H04N5/341 ,  H04N5/353 ,  H04N5/357 ,  H04N5/369 ,  H04N5/374

CPC分类号： H04N5/32 ,  H01L27/14607 ,  H01L27/14663 ,  H04N5/341 ,  H04N5/353

摘要： If image data is input to an image processor (step S1), the image processor generates an integrated image sum (step S2). The image processor extracts a maximum output max from the integrated image sum (step S3). The image processor compares the maximum output max with a preset threshold (step S4). In this case, the threshold is set to 80% of the saturation amount. When the saturation amount is 3 V, the threshold is 2.4 V. If the maximum value max is smaller than the threshold, imaging continues. If the maximum value max is equal to or larger than the threshold, the integrated image sum is cleared to 0 (step S5), and refresh operation is performed.

摘要翻译： 如果图像数据被输入到图像处理器（步骤S1），则图像处理器生成积分图像和（步骤S2）。 图像处理器从积分图像和提取最大输出最大值（步骤S 3）。 图像处理器将最大输出最大值与预设阈值进行比较（步骤S 4）。 在这种情况下，将阈值设定为饱和量的80％。 当饱和量为3 V时，阈值为2.4 V.如果最大值max小于阈值，则成像继续。 如果最大值max等于或大于阈值，则将积分图像和清除为0（步骤S 5），并执行刷新操作。

公开(公告)号：US07872218B2

公开(公告)日：2011-01-18

申请号：US12398528

申请日：2009-03-05

申请人： Tadao Endo ,  Toshio Kameshima ,  Tomoyuki Yagi ,  Katsuro Takenaka

发明人： Tadao Endo ,  Toshio Kameshima ,  Tomoyuki Yagi ,  Katsuro Takenaka

IPC分类号： H01L27/00

CPC分类号： H04N5/32 ,  H04N5/361 ,  H04N5/3698 ,  H04N5/378

摘要： Each pixel is provided with a photoelectric converting device S1(1-1) or the like, a source-follower-type first transistor T1(1-1) or the like, a second transistor Te(1-1) to be turned on when reading an electrical signal from a pixel selected by a shift register SR1 for each line and outputting the signal to a readout circuit unit and a third transistor T3(1-1) to be turned on when resetting a photoelectric converting device set to a pixel selected by a shift register SR1 for each line. Moreover, a bias power source for supplying a photoelectric conversion bias to a photoelectric converting device and a reset power source for supplying a reset bias to a photoelectric converting device are set in the readout circuit unit. By using the radiation image pickup apparatus and its control method, it is possible to improve the S/N ratio while restraining noises and preferably, it is possible to perform stable and high-speed dynamic-image photographing and restrain dark current.

摘要翻译： 每个像素设置有光电转换装置S1（1-1）等，源极跟随器型第一晶体管T1（1-1）等，要接通的第二晶体管Te（1-1） 当从用于每行的移位寄存器SR1选择的像素读取电信号时，将该信号输出到读出电路单元和第三晶体管T3（1-1），以在将光电转换装置设置为像素时复位 由每行的移位寄存器SR1选择。 此外，在读出电路单元中设置用于向光电转换装置提供光电转换偏压的偏置电源和用于向光电转换装置提供复位偏压的复位电源。 通过使用放射线摄像装置及其控制方法，可以在抑制噪声的同时提高S / N比，优选地，可以进行稳定的高速动态图像拍摄并抑制暗电流。

公开(公告)号：US07532706B2

公开(公告)日：2009-05-12

申请号：US11319910

申请日：2005-12-27

申请人： Toshio Kameshima ,  Tadao Endo ,  Tomoyuki Yagi ,  Katsuro Takenaka

发明人： Toshio Kameshima ,  Tadao Endo ,  Tomoyuki Yagi ,  Katsuro Takenaka

IPC分类号： H05G1/64 ,  H05G1/58 ,  H03G3/00 ,  H01L27/146

CPC分类号： H04N5/378 ,  A61B6/00 ,  A61B6/5235 ,  A61B6/585 ,  H04N5/32 ,  H04N5/3651

摘要： A correction process is performed using different gain correction signals (GSA, GSB) in accordance with radiographic modes (moving image radiographic mode/still image radiographic mode) set in an X-ray imaging apparatus, respectively. This makes it possible to acquire an image with decreased correction errors even when the X-ray imaging apparatus is configured using an imaging unit having different gain characteristics in the still image radiographic mode and moving image radiographic mode.

摘要翻译： 根据设置在X射线成像装置中的放射线照相模式（运动图像摄影模式/静止图像摄影模式），分别使用不同的增益校正信号（GSA，GSB）进行校正处理。 这使得即使当在静止图像放射照相模式和运动图像放射照相模式中使用具有不同增益特性的成像单元来配置X射线成像装置时，也可以获得具有降低的校正误差的图像。

公开(公告)号：US07512214B2

公开(公告)日：2009-03-31

申请号：US11875598

申请日：2007-10-19

申请人： Katsuro Takenaka ,  Tadao Endo ,  Toshio Kameshima ,  Tomoyuki Yagi

发明人： Katsuro Takenaka ,  Tadao Endo ,  Toshio Kameshima ,  Tomoyuki Yagi

IPC分类号： H05G1/64

CPC分类号： G01T1/2928 ,  G01N23/04 ,  H04N5/32 ,  H04N5/361 ,  H04N5/3651 ,  H04N5/374

摘要： A radiography apparatus includes a conversion unit having conversion elements arranged in a row-column pattern. In an object-image reading operation, the conversion unit detects an object image based on illuminated radiations, and a drive circuit drives the conversion unit so as to allow the conversion unit to output a signal based on the object image. In an offset-data reading operation, the conversion unit detects offset data in a period when the radiations are not illuminating, and the drive circuit drives so as to allow the conversion unit to output a signal based on the offset data. When the numbers of lines driven concurrently in the object-image reading operation is represented by n (equal to 1 or greater) and the numbers of lines driven concurrently in offset-data reading operation is represented by m, the drive circuit controls the conversion unit so as to satisfy the expression: n

摘要翻译： 射线照相设备包括具有以行列图案排列的转换元件的转换单元。 在对象图像读取操作中，转换单元基于照射的辐射来检测对象图像，并且驱动电路驱动转换单元，以允许转换单元基于对象图像输出信号。 在偏移数据读取操作中，转换单元在辐射不照亮的时段内检测偏移数据，并且驱动电路驱动以允许转换单元基于偏移数据输出信号。 当在物体图像读取操作中并行驱动的行数由n（等于1或更大）表示，并且在偏移数据读取操作中同时驱动的行数由m表示时，驱动电路控制转换单元 以满足表达式：n

公开(公告)号：US07403594B2

公开(公告)日：2008-07-22

申请号：US11094134

申请日：2005-03-31

申请人： Tadao Endo ,  Toshio Kameshima ,  Tomoyuki Yagi ,  Katsuro Takenaka

发明人： Tadao Endo ,  Toshio Kameshima ,  Tomoyuki Yagi ,  Katsuro Takenaka

IPC分类号： H05G1/56 ,  H05G1/64 ,  G01T1/24

CPC分类号： A61B6/4233 ,  A61B6/00 ,  A61B6/467

摘要： A lamp emits pulse-shaped visible light when a wait period begins. If a radiation emission switch is not pressed in the wait period, X-ray radiation is not emitted from an X-ray source, and no charges are accumulated in photoelectric conversion elements of an X-ray imaging apparatus. In a non-read period, although signals are sequentially read from the photoelectric conversion elements, an output signal does not change. When the radiation emission switch is pressed in synchronization with a radiation-induced signal in a certain wait period, the X-ray source emits X-rays. After irradiation of X-rays, a photoelectric conversion period transitions to an actual read period. In the photoelectric conversion period, X-rays are emitted and transmitted X-ray information of a patient are accumulated in the photoelectric conversion elements of the X-ray imaging apparatus. In the actual read period, the accumulated information is read.

摘要翻译： 当等待期开始时，灯发出脉冲形可见光。 如果在等待期间没有按下辐射发射开关，则不会从X射线源发射X射线，并且在X射线摄像装置的光电转换元件中不会积累电荷。 在非读取期间，尽管从光电转换元件依次读取信号，但输出信号不变。 当辐射发射开关在一定等待期间与辐射感应信号同步地按压时，X射线源发射X射线。 在X射线照射之后，光电转换周期转变到实际的读取周期。 在光电转换期间，X射线成像装置的光电转换元件中发射X射线并传送患者的X射线信息。 在实际读取期间，读取累积的信息。

公开(公告)号：US20080049900A1

公开(公告)日：2008-02-28

申请号：US11875598

申请日：2007-10-19

申请人： Katsuro Takenaka ,  Tadao Endo ,  Toshio Kameshima ,  Tomoyuki Yagi

发明人： Katsuro Takenaka ,  Tadao Endo ,  Toshio Kameshima ,  Tomoyuki Yagi

IPC分类号： H05G1/26

CPC分类号： G01T1/2928 ,  G01N23/04 ,  H04N5/32 ,  H04N5/361 ,  H04N5/3651 ,  H04N5/374

摘要： A radiography apparatus includes a conversion unit having conversion elements arranged in a row-column pattern to convert radiations into an electrical signal. In an object-image reading operation, the conversion unit detects an object image based on illuminated radiations, and a drive circuit drives the conversion unit so as to allow the conversion unit to output a signal based on the object image. In an offset-data reading operation, the conversion unit detects offset data in a period when the radiations are not illuminating, and the drive circuit drives the conversion unit so as to allow the conversion unit to output a signal based on the offset data. When the numbers of lines driven concurrently by the drive circuit in the object-image reading operation is represented by n (equal to 1 or greater) and the numbers of lines driven concurrently by the drive circuit in offset-data reading operation is represented by m, the drive circuit controls the conversion unit so as to satisfy the expression: n

摘要翻译： 一种放射摄影装置包括具有以行列图案排列的转换元件以将辐射转换为电信号的转换单元。 在对象图像读取操作中，转换单元基于照射的辐射来检测对象图像，并且驱动电路驱动转换单元，以允许转换单元基于对象图像输出信号。 在偏移数据读取操作中，转换单元在辐射不照亮的时段内检测偏移数据，并且驱动电路驱动转换单元，以允许转换单元基于偏移数据输出信号。 当在物体图像读取操作中由驱动电路同时驱动的行数由n（等于1或更大）表示，并且由偏移数据读取操作中的驱动电路同时驱动的行数由m 驱动电路控制转换单元以满足以下表达式：n

公开(公告)号：US20050220269A1

公开(公告)日：2005-10-06

申请号：US11094134

申请日：2005-03-31

申请人： Tadao Endo ,  Toshio Kameshima ,  Tomoyuki Yagi ,  Katsuro Takenaka

发明人： Tadao Endo ,  Toshio Kameshima ,  Tomoyuki Yagi ,  Katsuro Takenaka

IPC分类号： A61B6/00 ,  H05G1/56

CPC分类号： A61B6/4233 ,  A61B6/00 ,  A61B6/467

摘要： A lamp emits pulse-shaped visible light when a wait period begins. If a radiation emission switch is not pressed in the wait period, X-ray radiation is not emitted from an X-ray source, and no charges are accumulated in photoelectric conversion elements of an X-ray imaging apparatus. In a non-read period, although signals are sequentially read from the photoelectric conversion elements, an output signal does not change. When the radiation emission switch is pressed in synchronization with a radiation-induced signal in a certain wait period, the X-ray source emits X-rays. After irradiation of X-rays, a photoelectric conversion period transitions to an actual read period. In the photoelectric conversion period, X-rays are emitted and transmitted X-ray information of a patient are accumulated in the photoelectric conversion elements of the X-ray imaging apparatus. In the actual read period, the accumulated information is read.

摘要翻译： 当等待期开始时，灯发出脉冲形可见光。 如果在等待期间没有按下辐射发射开关，则不会从X射线源发射X射线，并且在X射线摄像装置的光电转换元件中不会积累电荷。 在非读取期间，尽管从光电转换元件依次读取信号，但输出信号不变。 当辐射发射开关在一定等待期间与辐射感应信号同步地按压时，X射线源发射X射线。 在X射线照射之后，光电转换周期转变到实际的读取周期。 在光电转换期间，X射线成像装置的光电转换元件中发射X射线并传送患者的X射线信息。 在实际读取期间，读取累积的信息。

公开(公告)号：US20050109927A1

公开(公告)日：2005-05-26

申请号：US10991436

申请日：2004-11-19

申请人： Katsuro Takenaka ,  Tadao Endo ,  Toshio Kameshima ,  Tomoyuki Yagi

发明人： Katsuro Takenaka ,  Tadao Endo ,  Toshio Kameshima ,  Tomoyuki Yagi

IPC分类号： G01T1/20 ,  A61B6/00 ,  G01T1/24 ,  G01T1/29 ,  H01L27/14 ,  H01L31/09 ,  H04N5/32

CPC分类号： G01T1/2928 ,  A61B6/5258 ,  A61B6/583

摘要： A plurality of correction images are obtained while changing the radiation energy of an incident radiation in the absence of an object. Subsequently, an object image is obtained in the presence of the object by emitting the radiation to the object. Then, the object image is corrected by using a correction image obtained under a radiation energy condition closest to the radiation energy of the obtained object image.

摘要翻译： 在不存在物体的同时改变入射辐射的辐射能量的同时获得多个校正图像。 随后，通过向对象发射辐射来在对象的存在下获得对象图像。 然后，通过使用在最接近所获得的对象图像的辐射能量的辐射能量条件下获得的校正图像来校正对象图像。

公开(公告)号：US20090065702A1

公开(公告)日：2009-03-12

申请号：US12271612

申请日：2008-11-14

申请人： Toshio Kameshima ,  Tadao Endo ,  Tomoyuki Yagi ,  Katsuro Takenaka

发明人： Toshio Kameshima ,  Tadao Endo ,  Tomoyuki Yagi ,  Katsuro Takenaka

IPC分类号： G01T1/24

CPC分类号： H04N5/32 ,  H04N5/23245 ,  H04N5/363

摘要： An imaging apparatus includes a sensor array, readout apparatus, and control circuit. The readout apparatus includes first LPFs arranged in correspondence with signal lines, an analog multiplexer, and a second LPF. The cut-off frequencies of the first and second LPFs can be switched on two stages, and the control circuit switches the cut-off frequencies of the first and second LPFs in accordance with the imaging mode.

摘要翻译： 一种成像装置包括传感器阵列，读出装置和控​​制电路。 读出装置包括与信号线对应地布置的第一LPF，模拟多路复用器和第二LPF。 第一和第二LPF的截止频率可以在两级上切换，并且控制电路根据成像模式切换第一和第二LPF的截止频率。

公开(公告)号：US20070096032A1

公开(公告)日：2007-05-03

申请号：US11467438

申请日：2006-08-25

申请人： Tomoyuki Yagi ,  Tadao Endo ,  Toshio Kameshima ,  Katsuro Takenaka

发明人： Tomoyuki Yagi ,  Tadao Endo ,  Toshio Kameshima ,  Katsuro Takenaka

IPC分类号： G01T1/20

CPC分类号： G01T1/247

摘要： The radiation image pickup apparatus is provided with a sensor array in which a plurality of pixels are two-dimensionally arranged, in which the pixels are provided with a conversion element for converting radiation into electric charge and a switch element for transferring an electrical signal according to the electric charge to the outside, a reading circuit for reading the electrical signal transferred from the switch element through a signal wiring, a driving circuit for supplying a drive signal to the switch element through a drive wiring in order to transfer the electrical signal to the reading circuit and a control unit for changing the voltage value of the drive signal in accordance with the number of drive wirings through which the drive signal is simultaneously supplied from the driving circuit.

摘要翻译： 放射线摄像装置设置有传感器阵列，其中多个像素被二维布置，其中像素设置有用于将辐射转换成电荷的转换元件和用于传送电信号的开关元件，根据 向外部的电荷，用于读取通过信号布线从开关元件传送的电信号的读取电路，用于通过驱动布线向开关元件提供驱动信号的驱动电路，以便将电信号传送到 读取电路和用于根据从驱动电路同时提供驱动信号的驱动配线的数量来改变驱动信号的电压值的控制单元。