公开(公告)号：US20070291904A1

公开(公告)日：2007-12-20

申请号：US11751686

申请日：2007-05-22

申请人： Katsuro TAKENAKA ,  Tadao Endo ,  Toshio Kameshima ,  Tomoyuki Yagi ,  Keigo Yokoyama

发明人： Katsuro TAKENAKA ,  Tadao Endo ,  Toshio Kameshima ,  Tomoyuki Yagi ,  Keigo Yokoyama

IPC分类号： G01D18/00

CPC分类号： G01N23/04

摘要： When a gain correction is performed for the radiographed object image, the acquisition of the object image having a high grade quality and no artifact is realized. For that purpose, an image storing unit is provided for storing an image for correction radiographed based on conditions set with the table in a state in which no object exists to each operation modes of the plurality of operation modes; and an image processing unit is provided for performing a gain correction processing of the radiographed object image and performs the gain correction processing of the radiographed object image obtained based on the conditions set in the table of the operation mode selected by the selecting unit in a state in which the object exists using a corresponding image for correction extracted from the image storage unit based on the operation mode selected by the selecting unit.

摘要翻译： 当对于拍摄对象图像执行增益校正时，实现具有高等级质量并且不产生伪影的对象图像的获取。 为此目的，提供一种图像存储单元，用于根据在多个操作模式的每个操作模式中不存在对象的状态，基于用该表设置的条件来存储用于校正的校正图像; 并且提供图像处理单元，用于执行所拍摄的对象图像的增益校正处理，并且执行基于在状态中由选择单元选择的操作模式的表中设置的条件获得的拍摄对象图像的增益校正处理 基于由选择单元选择的操作模式，使用从图像存储单元提取的用于校正的对应图像存在对象。

公开(公告)号：US07302039B2

公开(公告)日：2007-11-27

申请号：US11346873

申请日：2006-02-02

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： At least one exemplary embodiment is directed to a radiography apparatus configured to have an offset reading period, where during the offset reading period an offset reading operation is performed without illumination by radiation (e.g., X-rays). The offset reading period can be different from a radiation (e.g., X-ray) reading period in timings of applying a gate pulse. During the offset reading period, a pixel addition can be performed such that the switching elements corresponding to two or more lines are concurrently turned on-off thus reducing the offset reading period.

摘要翻译： 至少一个示例性实施例涉及被配置为具有偏移读取周期的放射照相装置，其中在偏移读取周期期间，在不通过辐射（例如X射线）照射的情况下执行偏移读取操作。 偏移读取周期可以不同于施加栅极脉冲的定时中的辐射（例如，X射线）读取周期。 在偏移读取期间，可以执行像素相加，使得对应于两条或更多行的开关元件同时导通，从而减小偏移读取周期。

公开(公告)号：US07227926B2

公开(公告)日：2007-06-05

申请号：US11088775

申请日：2005-03-25

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

CPC分类号： H04N5/32 ,  A61B6/00 ,  A61B6/405 ,  A61B6/482 ,  A61B6/585 ,  G01N23/04 ,  H04N5/3651

摘要： An X-ray image radiographing system comprises an X-ray generator, a detection unit, a correction unit for performing a correction processing for the data outputted from the detection unit, and an output unit for outputting data processed by the correction unit. Moreover, it comprises a control unit for controlling the detection unit, the X-ray generator and the correction unit, a radiographing condition memory accessible by the control unit, a radiographing button for making a radiographing request to the control unit, a radiographing mode setting unit 106 for setting a radiographing mode in the control unit, and a photo timer having an AE function. The radiographing mode setting unit may be constituted of a workstation. Thereby, it is possible to provide an image radiographing apparatus and system capable of easily coping with a plurality of radiographing modes.

摘要翻译： X射线图像摄影系统包括X射线发生器，检测单元，用于对从检测单元输出的数据执行校正处理的校正单元，以及用于输出由校正单元处理的数据的输出单元。 此外，它包括用于控制检测单元，X射线发生器和校正单元的控制单元，由控制单元可访问的放射照相条件存储器，用于向控制单元进行放射照相请求的放射照相按钮，放射照相模式设置 用于在控制单元中设置放射照相模式的单元和具有AE功能的照片定时器。 射线照相模式设定单元可以由工作站构成。 由此，能够提供能够容易地应对多个摄影模式的图像摄影装置和系统。

公开(公告)号：US20060104417A1

公开(公告)日：2006-05-18

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

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.

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：US08829438B2

公开(公告)日：2014-09-09

申请号：US13201119

申请日：2010-03-30

申请人： Sho Sato ,  Tadao Endo ,  Toshio Kameshima ,  Masayoshi Akiyama ,  Tomoyuki Yagi ,  Katsuro Takenaka ,  Keigo Yokoyama

发明人： Sho Sato ,  Tadao Endo ,  Toshio Kameshima ,  Masayoshi Akiyama ,  Tomoyuki Yagi ,  Katsuro Takenaka ,  Keigo Yokoyama

IPC分类号： G01J1/00

CPC分类号： G01T1/2928 ,  H04N5/32 ,  H04N5/343 ,  H04N5/3454 ,  H04N5/357

摘要： An imaging operation includes a first imaging operation for outputting image data according to irradiation to the detector with radiation or light in an irradiation field A corresponding to a part of the plurality of pixels, and a second imaging operation for outputting image data according to irradiation to the detector 104 with radiation or light in an irradiation field B wider than the irradiation field A, wherein, responsive to a changing from irradiation in the irradiation field A to irradiation in the irradiation field B, an operation of the detector is controlled so that the detector performs an initializing operation for initializing conversion elements during a period between the first and second imaging operations.

摘要翻译： 成像操作包括：第一成像操作，用于在对应于所述多个像素的一部分的照射场A中用辐射或光照射到所述检测器，输出图像数据;以及第二成像操作，用于根据照射来输出图像数据 检测器104在比照射场A宽的照射场B中具有辐射或光，其中响应于照射场A中的照射到照射场B中的照射的变化，控制检测器的操作，使得 检测器在第一和第二成像操作期间执行用于初始化转换元件的初始化操作。

公开(公告)号：US08809795B2

公开(公告)日：2014-08-19

申请号：US12422474

申请日：2009-04-13

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

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

IPC分类号： G01T1/24 ,  G01T1/29

CPC分类号： G01T1/2928

摘要： An imaging apparatus includes a transmitting path to transmit the output electric signal, and a read-out circuit performing a sampling and holding operation for holding the electric signal read out through the transmitting path, and performing a reset operation to reset the transmitting path, and includes a control unit for controlling an outputting drive circuit and a read-out circuit so as to perform the sampling and holding operation row by row after a start of the output operation, to perform the reset operation after the sampling and holding operation, and to terminate the output operation after the reset operation. This can reduce the frame time without reducing the S/N ratio of the image signal.

摘要翻译： 一种成像装置包括发送输出电信号的发送路径和执行采样保持操作的读出电路，用于保持通过发送路径读出的电信号，并且执行复位操作以复位发送路径，以及 包括用于控制输出驱动电路和读出电路的控制单元，以便在开始输出操作之后逐行地执行采样和保持操作，以在采样和保持操作之后执行复位操作，并且 在复位操作后终止输出操作。 这可以减少帧时间而不降低图像信号的S / N比。

公开(公告)号：US08247779B2

公开(公告)日：2012-08-21

申请号：US12490926

申请日：2009-06-24

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

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

IPC分类号： G01T1/24

CPC分类号： A61B6/4233 ,  A61B6/4441 ,  H01L27/14665 ,  H04N5/325

摘要： A radiation imaging apparatus having high frame rate and picture quality by offset correction has: a sensor array having matrix-shaped pixels each including a converting element and a TFT; a driver for supplying signals to control terminals of the TFTs row by row; a reader for holding a signal in a first or second sampling/holding (S/H) circuit and outputting an image signal; and a controller for controlling the driver and reader. Until the image signal is output after irradiation of the apparatus with pulsating radiation, the TFT of a pixel is driven so as to output a first signal, the TFT of the pixel to which the first signal has been output is driven so as to output a second electric signal, and the reader outputs the image signal of the signal showing a difference between the first and second signals held in the first and second S/H circuits.

摘要翻译： 通过偏移校正具有高帧率和图像质量的放射线成像装置具有：具有矩阵形像素的传感器阵列，每个像素像素包括转换元件和TFT; 用于逐行地向TFT的控制端子提供信号的驱动器; 用于在第一或第二采样/保持（S / H）电路中保持信号并输出​​图像信号的读取器; 以及用于控制驾驶员和读取器的控制器。 直到图像信号在用脉动辐射照射设备之后输出时，像素的TFT被驱动以输出第一信号，驱动第一信号的像素的TFT被驱动以输出 第二电信号，并且读取器输出表示第一和第二S / H电路中保持的第一和第二信号之间的差的信号的图像信号。

公开(公告)号：US08232529B2

公开(公告)日：2012-07-31

申请号：US13018576

申请日：2011-02-01

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

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

IPC分类号： G01T1/20 ,  G01T1/208

CPC分类号： H04N5/217 ,  H04N5/32 ,  H04N5/361

摘要： An idling time period after applying a bias to a conversion element until a start of an accumulation of the conversion element for deriving an image and an accumulation period from the start of the accumulation to a termination of the accumulation are measured. An offset correction of the image is conducted by using a dark current accumulation charge quantity in the accumulation calculated based on the measured idling time period and accumulation period and stored dark current response characteristics. Thus, even just after applying the bias to the conversion element, the offset correction can be properly conducted. An imaging apparatus which can execute a good radiographing without increasing costs and a size even just after applying the bias to the conversion element is provided.

摘要翻译： 测量向转换元件施加偏压直到用于导出图像的转换元件的累积开始和从累积开始到累积结束的累积期间之间的空转时间周期。 通过使用基于测量的空闲时间周期和累加时间计算的累积中的暗电流累积电荷量和存储的暗电流响应特性来进行图像的偏移校正。 因此，即使在将偏置应用于转换元件之后，也可以适当地进行偏移校正。 提供了即使在将偏压应用于转换元件之后，也可以在不增加成本和尺寸的情况下执行良好的放射照相的成像装置。

公开(公告)号：US20120170827A1

公开(公告)日：2012-07-05

申请号：US13395634

申请日：2010-09-14

申请人： Tomoyuki Yagi ,  Tadao Endo ,  Toshio Kameshima ,  Katsuro Takenaka ,  Keigo Yokoyama ,  Sho Sato

发明人： Tomoyuki Yagi ,  Tadao Endo ,  Toshio Kameshima ,  Katsuro Takenaka ,  Keigo Yokoyama ,  Sho Sato

IPC分类号： G06K9/00

CPC分类号： H04N5/32 ,  G01T1/17 ,  H04N5/343 ,  H04N5/3454 ,  H04N5/374

摘要： An imaging apparatus includes a control unit and a detector that includes multiple pixels and that performs an image capturing operation to output image data corresponding to emitted radiation or light. The image capturing operation includes a first image capturing operation in which the detector is scanned in a first scanning area corresponding to part of the multiple pixels to output image data in the first scanning area and a second image capturing operation in which the detector is scanned in a second scanning area larger than the first scanning area to output image data in the second scanning area. The control unit causes the detector to perform an initialization operation to initialize the conversion element during a period between the first image capturing operation and the second image capturing operation in accordance with switching from the first scanning area to the second scanning area.

摘要翻译： 成像装置包括控制单元和包括多个像素的检测器，并且执行图像捕获操作以输出对应于所发射的辐射或光的图像数据。 图像拍摄操作包括第一图像拍摄操作，其中在与多个像素的一部分对应的第一扫描区域中扫描检测器，以输出第一扫描区域中的图像数据，以及第二图像捕获操作，其中检测器被扫描 大于第一扫描区域的第二扫描区域，以输出第二扫描区域中的图像数据。 根据从第一扫描区域到第二扫描区域的切换，控制单元使得检测器执行初始化操作以在第一图像捕获操作和第二图像捕获操作之间的期间初始化转换元件。