公开(公告)号：US20120217413A1

公开(公告)日：2012-08-30

申请号：US13502509

申请日：2010-06-10

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

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

IPC分类号： G01T1/16

CPC分类号： G01T7/005 ,  A61B6/4233 ,  A61B6/4441 ,  A61B6/585 ,  H04N5/32 ,  H04N5/3742 ,  H04N5/37455 ,  H04N5/378

摘要： An image pickup apparatus includes a detector having pixels divided into first and second pixel groups, a signal processor including a reading circuit unit including first and second reading circuits, an A/D conversion unit including first and second A/D converters, a digital data processing circuit, and a controller. The controller instructs the signal processor to perform a signal processing operation several times of adding direct current potentials to analog electric signals of pixels from the reading circuit unit, supplying the signals to the A/D conversion unit, and outputting digital data to the digital data processing circuit while the direct current potentials are changed, and an average processing operation of averaging the digital data for the pixels using the digital data processing circuit.

摘要翻译： 图像拾取装置包括具有分成第一和第二像素组的像素的检测器，包括具有第一和第二读取电路的读取电路单元的信号处理器，包括第一和第二A / D转换器的A / D转换单元，数字数据 处理电路和控制器。 控制器指示信号处理器对来自读取电路单元的像素的模拟电信号添加直流电势数次的信号处理操作，将信号提供给A / D转换单元，并将数字数据输出到数字数据 处理电路，而直流电位改变，以及使用数字数据处理电路对像素的数字数据进行平均的平均处理操作。

公开(公告)号：US20120138811A1

公开(公告)日：2012-06-07

申请号：US13390592

申请日：2010-08-25

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

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

IPC分类号： G01T1/17 ,  H01L27/146

CPC分类号： G01T1/17

摘要： An imaging system includes a detector (104) having a first area where irradiation occurs in a radiation field (A) and a second area other than the first area where irradiation occurs in a radiation field (B) and configured to output image data, and an image processing unit (601) that performs image processing on the image data. The image processing unit (601) includes a storage unit (602) that stores dark output information, a measurement unit (607) that measures the integral dose of the radiation or light applied to a pixel in the first area and the integral dose of the radiation or light applied to a pixel in the second area, and a correction unit (610) that corrects the image data, based on the dark output information obtained from the storage unit (602) and the integral doses measured by the measurement unit (607), when changing of the radiation field has occurred.

摘要翻译： 成像系统包括检测器（104），其具有在辐射场（A）中发生照射的第一区域和除辐射场（B）内发生的照射的第一区域以外的第二区域，并且被配置为输出图像数据;以及 对图像数据执行图像处理的图像处理单元（601）。 图像处理单元（601）包括存储暗输出信息的存储单元（602），测量单元（607），其测量施加到第一区域中的像素的辐射或光的积分剂量和 施加到第二区域中的像素的辐射或光，以及基于从存储单元（602）获得的暗输出信息和由测量单元（607）测量的积分剂量来校正图像数据的校正单元（610） ），当发生辐射场变化时。

公开(公告)号：US08167486B2

公开(公告)日：2012-05-01

申请号：US12940444

申请日：2010-11-05

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 ,  H05G1/58

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：US20120044392A1

公开(公告)日：2012-02-23

申请号：US13286478

申请日：2011-11-01

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： H04N9/64

CPC分类号： A61B6/00 ,  A61B6/5235 ,  A61B6/585 ,  G06T5/002 ,  G06T2200/28 ,  G06T2207/10116 ,  G06T2207/30004 ,  H04N5/32 ,  H04N5/347 ,  H04N5/367

摘要： An imaging apparatus is provided, which improves correction accuracy at the time of pixel addition reading and scarcely deteriorates in resolution of the image data. This apparatus comprises: a conversion unit comprising a plurality of unit-pixels and converting an incident radiation or a light into pixel information; a signal processing unit capable of reading the pixel information for each unit-pixel, or capable of reading additional added pixel information for a plurality of unit-pixels, based on a control from a control unit for controlling a driving of the conversion unit according to a plurality of operation modes; a storage unit for storing a plurality of correction information according to the plurality of operating modes; and a correction unit for performing the correction of the pixel information based on the correction information extracted from the plurality of correct information according to the operation mode.

摘要翻译： 提供了一种成像装置，其提高了像素附加读取时的校正精度，并且几乎不降低图像数据的分辨率。 该装置包括：转换单元，包括多个单位像素，并将入射的辐射或光转换为像素信息; 信号处理单元，其能够基于来自控制单元的控制单元读取用于每个单位像素的像素信息，或者能够读取多个单位像素的附加的附加像素信息，根据控制单元控制转换单元的驱动 多种操作模式; 存储单元，用于根据多个操作模式存储多个校正信息; 以及校正单元，用于根据操作模式，根据从多个正确信息中提取的校正信息来执行像素信息的校正。

公开(公告)号：US08093562B2

公开(公告)日：2012-01-10

申请号：US12748004

申请日：2010-03-26

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

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

IPC分类号： G01T1/24

CPC分类号： H04N5/32 ,  H04N5/357 ,  H04N5/361 ,  H04N5/365 ,  H04N5/374 ,  H04N5/378

摘要： The invention intends to be able to perform a gain correction fully adequately. Hence, at the time of radiographing an object, a gain correction of the object image is performed based on a gain correction image (XRc1) derived by performing a light reset. On the other hand, at the time of radiographing an object, when a light reset is not performed, a gain correction of the object image is performed based on a gain correction image (XRc2) derived without performing the light reset.

摘要翻译： 本发明旨在能够充分地进行增益校正。 因此，在拍摄物体时，基于通过进行光复位导出的增益校正图像（XRc1）来执行对象图像的增益校正。 另一方面，在拍摄物体时，当不进行光复位时，基于不进行光复位而导出的增益校正图像（XRc2），进行被摄体图像的增益校正。

公开(公告)号：US20110309262A1

公开(公告)日：2011-12-22

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： H01L27/148

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：US20110121183A1

公开(公告)日：2011-05-26

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

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：US20110095169A1

公开(公告)日：2011-04-28

申请号：US12908171

申请日：2010-10-20

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

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

IPC分类号： H01L27/14

CPC分类号： H04N5/378 ,  H04N5/32 ,  H04N5/3658

摘要： An imaging apparatus includes a conversion unit including a plurality of pixels arranged in a matrix, each pixel including a conversion element, an output switch element, and an initialization switch element; an output drive circuit controls an output operation; an initialization drive circuit controls an initialization operation; and a readout circuit performs a signal sample-and-hold operation and a reset operation. A control unit performs termination of the output operation of a certain row and start of the output operation of another row after the termination of the reset operation, the start of the signal sample-and-hold operation after the termination of the output operation of the certain row and the start of the output operation of the other row, the start of the reset operation and the initialization operation after the termination of the signal sample-and-hold operation, and the termination of the reset operation after the termination of the initialization operation.

摘要翻译： 一种成像装置包括：转换单元，包括以矩阵排列的多个像素，每个像素包括转换元件，输出开关元件和初始化开关元件; 输出驱动电路控制输出操作; 初始化驱动电路控制初始化操作; 并且读出电路执行信号采样保持操作和复位操作。 控制单元在复位操作结束之后终止某行的输出操作和另一行的输出操作的开始，在输出操作结束之后开始信号采样和保持操作 某一行和另一行的输出操作的开始，复位操作的开始和在信号采样和保持操作结束之后的初始化操作，以及在初始化结束之后终止复位操作 操作。

公开(公告)号：US20110049375A1

公开(公告)日：2011-03-03

申请号：US12940234

申请日：2010-11-05

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： H04N5/32 ,  A61B6/4233 ,  A61B6/563 ,  H01L27/14676 ,  H04N5/321 ,  H04N5/347 ,  H04N5/374 ,  H04N5/378

摘要： A radiation imaging apparatus comprises a first driving circuit unit to drive a first switching element connected to a conversion element, wherein the conversion element converting radiation into charges, a second driving circuit unit to drive a second switching element connected to the conversion element, and a control unit to control the first driving circuit and the second driving circuit independently at different timing.

摘要翻译： 辐射摄像装置包括第一驱动电路单元，用于驱动连接到转换元件的第一开关元件，其中所述转换元件将辐射转换成电荷，第二驱动电路单元驱动连接到所述转换元件的第二开关元件，以及 控制单元在不同的定时独立地控制第一驱动电路和第二驱动电路。

公开(公告)号：US07880145B2

公开(公告)日：2011-02-01

申请号：US12556607

申请日：2009-09-10

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

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

IPC分类号： H01L27/146

CPC分类号： H04N5/374 ,  H04N5/32 ,  H04N5/357 ,  H04N5/3658

摘要： As a radiation imaging apparatus which can easily and effectively correct line noise, there is provided a radiation imaging apparatus having: a conversion unit having a pixel region in which a plurality of pixels each having a conversion element (202) for converting radiation into an electric charge and a switching element (201) for outputting an electric signal based on the electric charge are arranged in a matrix; a capacitor element (301) arranged outside the pixel region; a reading out circuit unit (108) for reading out the electric signals from the pixels row by row and reading out, in parallel, a signal from the capacitor element and the electric signal from the pixel; and a correction unit for correcting the electric signal based on the signal from the capacitor element.

摘要翻译： 作为可以容易且有效地校正线路噪声的放射线摄像装置，提供了一种放射线摄像装置，其具有：具有像素区域的转换单元，其中多个像素分别具有用于将辐射转换成电的转换元件（202） 电荷和用于基于电荷输出电信号的开关元件（201）排列成矩阵; 布置在像素区域外的电容器元件（301） 读出电路单元（108），用于并行地读出来自像素的电信号，并且并行地读出来自电容器元件的信号和来自像素的电信号; 以及校正单元，用于基于来自电容器元件的信号校正电信号。