公开(公告)号：US20070131843A1

公开(公告)日：2007-06-14

申请号：US11608083

申请日：2006-12-07

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： G01J1/32 ,  H04N5/228

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 adequately perform a gain correction. 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： 本发明意图能够充分地进行增益校正。 因此，在拍摄对象时，基于通过进行光复位导出的增益校正图像（XRc 1）来执行对象图像的增益校正。 另一方面，在对物体进行摄影时，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（XRc 2）进行对象图像的增益校正。

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。

公开(公告)号：US20070040099A1

公开(公告)日：2007-02-22

申请号：US11502541

申请日：2006-08-11

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： H01L27/00

CPC分类号： H01L27/14663 ,  H01L27/12 ,  H01L27/14609 ,  H01L31/095 ,  H01L31/105 ,  H01L31/1085 ,  H01L31/119 ,  H04N5/32 ,  H04N5/357 ,  H04N5/365 ,  H04N5/3742

摘要： A radiation image pickup apparatus which selectively executes a first reading operation driving a detection unit irradiated with the radiation to read a first signal value, a second reading operation driving the detection unit without being irradiated with any radiations before the first reading operation to read a second signal value, and a third reading operation driving the detection unit without being irradiated with any radiations after the first reading operation to read a third signal value, and subtracts a signal value produced by the processing of the second signal value and the third signal value from the first signal value, thereby reducing an offset component and random noises without lowering a frame rate and its control method are provided.

摘要翻译： 一种放射线图像拾取装置，其选择性地执行驱动用辐射照射的检测单元读取第一信号值的第一读取操作，驱动检测单元的第二读取操作，而不在第一读取操作之前照射任何辐射以读取第二信号值 信号值，以及驱动检测单元的第三读取操作，而不用在第一读取操作之后的任何辐射照射以读取第三信号值，并且将从第二信号值和第三信号值的处理产生的信号值相减 第一信号值，从而降低偏移分量和随机噪声而不降低帧速率，并提供其控制方法。

公开(公告)号：US07154099B2

公开(公告)日：2006-12-26

申请号：US11328134

申请日：2006-01-10

申请人： Tadao Endo

发明人： Tadao Endo

IPC分类号： G01T1/24

CPC分类号： H01L27/14658 ,  H04N5/32

摘要： A radiation image pick-up device which can restrain voltage fluctuations on GND and power supply lines, dispense with frame-by-frame wait periods, make possible stable and high speed moving image photographing, and are reduced in cost and dark current is to be provided.In pixels for detecting incident radiations, there are provided MIS-type conversion elements for converting the radiations into electric signals, source follower-type first TFTs for reading out the electric signals, second TFTs which so operate as to read out of the first TFTs the electric signals of the conversion elements selected by a drive circuit section on a row-by-row basis, and third TFTs which so operate as to reset or refresh on a row-by-row basis the conversion elements out of which reading by the first TFTs has been accomplished.

摘要翻译： 可以抑制GND和电源线上的电压波动的放射线图像拾取装置，以逐帧等待时间段为准，使得可以进行稳定和高速的运动图像拍摄，成本降低，并且暗电流将成为 提供。 在用于检测入射辐射的像素中，提供了用于将辐射转换为电信号的MIS类型转换元件，用于读出电信号的源极跟随器型第一TFT，用于从第一TFT读出的第二TFT 由驱动电路部分逐行选择的转换元件的电信号，以及第三TFT，其以逐行为基础的方式操作以重置或刷新转换元件，由第一 TFT已经完成。

公开(公告)号：US07113565B2

公开(公告)日：2006-09-26

申请号：US11270352

申请日：2005-11-08

申请人： Tadao Endo

发明人： Tadao Endo

IPC分类号： G01N23/04 ,  H05G1/64

CPC分类号： A61B6/583 ,  A61B6/585 ,  G01N23/04 ,  G01N23/046 ,  G01N2223/419

摘要： A radiological imaging apparatus and method corrects fixed pattern noise (FPN) generated within the apparatus and suppresses increases in random noise attendant upon FPN correction to provide radiological imaging having improved reliability and image quality. The apparatus has a signal processing circuit that digitizes analog output from a read-out circuit, four FPN memories for storing four dark outputs, a light memory for storing a light output after X-ray exposure of a subject, a CPU for controlling the signal processing circuit as well as FPN and light memories, and a shift resister 7 controlled by the CPU. The method involves averaging multiple dark outputs and subtracting,the FPN data average so obtained from the light output which includes the X-ray imaged to enhance picture quality. Since the FPN correction uses FPN data that has been averaged over multiple dark outputs, the method also suppresses random noise generated by the FPN correction for enhanced imaging accuracy.

摘要翻译： 放射成像装置和方法校正在装置内产生的固定模式噪声（FPN），并且抑制伴随FPN校正的随机噪声的增加，以提供具有改善的可靠性和图像质量的放射成像。 该装置具有数字化来自读出电路的模拟输出的信号处理电路，用于存储四个暗输出的四个FPN存储器，用于存储被摄体的X射线曝光后的光输出的光存储器，用于控制信号的CPU 处理电路以及FPN和光存储器，以及由CPU控制的移位寄存器7。 该方法包括对多个暗输出进行平均并减去从包括被成像的X射线的光输出获得的FPN数据平均值，以提高图像质量。 由于FPN校正使用在多个暗输出上被平均的FPN数据，所以该方法还抑制由FPN校正产生的随机噪声以增强成像精度。

公开(公告)号：US07038215B2

公开(公告)日：2006-05-02

申请号：US10987006

申请日：2004-11-15

申请人： Tadao Endo

发明人： Tadao Endo

IPC分类号： G01T1/24

CPC分类号： H04N5/361 ,  G01T1/2928 ,  H04N5/32

摘要： In a photoelectric conversion device, in order to suppress alteration of its properties during a long time use, lower the decrease of the S/N ratio due to a dark current output, and shorten image-pickup cycles, MIS type photoelectric conversion elements using an amorphous semiconductor material are connected with an electric power source for applying bias for photoelectric conversion, an electric power for resetting an accumulated electric charge, and a setting point for applying zero bias at the time of non-operation of the element through a switch. Emitted x-rays from an x-ray source, which is a first light source, come into collision against phosphor after being transmitted through an object body to be inspected and then are absorbed in the phosphor to be converted into visible light rays. The visible light rays from the phosphor are radiated to the photoelectric conversion elements. Prior to reading out of the x-ray image, an LED light source is lighted. Switches are used for turning on the x-ray source and the LED light source. In this embodiment, there is a reading-out period and a non-reading-out period; the x-ray source is turned on during the reading-out period, and the LED light source is turned on during the non-reading-out period.

公开(公告)号：US20060076499A1

公开(公告)日：2006-04-13

申请号：US11289559

申请日：2005-11-30

申请人： Tadao Endo

发明人： Tadao Endo

IPC分类号： G01T1/20

CPC分类号： H04N5/335 ,  H04N5/32

摘要： A radiation image pick-up apparatus includes a conversion element, accumulation element, read element, detection element, driving circuit, and controller. The conversion element converts radiation into an electrical signal. The accumulation unit accumulates the electrical signal converted by the conversion element. The read unit reads out the electrical signal accumulated in the accumulation unit. The detection element detects the start and end of irradiation of the radiation. The driving circuit accumulates the electrical signal in the accumulation element responsive to the detection of start of irradiation of the radiation, and drives the read element responsive to the detection of the end of irradiation of the radiation, based on the detection result of the detection element. The controller controls the driving circuit. A radiation image pick-up system is also disclosed.

公开(公告)号：US06985555B2

公开(公告)日：2006-01-10

申请号：US11189927

申请日：2005-07-27

申请人： Tadao Endo

发明人： Tadao Endo

IPC分类号： H05G1/64

CPC分类号： G01T1/24 ,  G01T1/2928

摘要： A radiation imaging apparatus includes a radiation detecting unit and an image-display controlling unit. The radiation detecting unit has radiation detectors, arranged in a two-dimensional array, for detecting radiation transmitted through an object as electrical signals. The image-display controlling unit radiographs radiation images of the object, detected as the electrical signals by the radiation detecting unit, at a predetermined frame rate as continuous images in a plurality of frames and displays a processed image given by subtracting an m-th image from an (m+1)-th image in synchronous with either the m-th image or the (m+1)-th image that does not undergo the subtraction in a display, where m is a natural number.

摘要翻译： 辐射成像装置包括放射线检测单元和图像显示控制单元。 放射线检测单元具有以二维阵列排列的放射线检测器，用于检测通过物体传输的辐射作为电信号。 图像显示控制单元以预定的帧速率将由该放射线检测单元检测为电信号的对象的放射线图像作为多个帧中的连续图像进行放射照片，并显示通过减去第m个图像给出的处理图像 从与第m图像或第m（m + 1）个图像同步的第（m + 1）个图像，其中m是自然数。

公开(公告)号：US20050264665A1

公开(公告)日：2005-12-01

申请号：US11127077

申请日：2005-05-12

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： G01T1/20 ,  A61B6/00 ,  G01T1/202 ,  G01T1/24 ,  H01L27/14 ,  H01L27/146 ,  H01L31/09 ,  H04N5/30 ,  H04N5/32 ,  H04N5/335 ,  H04N5/357 ,  H04N5/369 ,  H04N5/374 ,  H04N5/376

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： 各像素设置有光电转换装置S 1（1 - 1）等，源极跟随器型的第一晶体管T 1（1 - 1）等，第二晶体管特（1 - 1）是 当从针对每一行的移位寄存器SR 1选择的像素读取电信号时，该信号被导通，并且当复位光电转换装置时将该信号输出到读出电路单元和第三晶体管T 3（1 - 1）以导通 设置为由移位寄存器SR 1为每行选择的像素。 此外，用于供给光电转换偏置的光电转换装置和用于供给复位偏压到一个光电转换装置的复位电源的偏压电源中的读出电路单元被设置。 通过使用放射线图像拾取装置及其控制方法，能够提高S / N比，同时抑制噪声和优选地，它是能够进行稳定和高速动态图像拍摄和抑制暗电流。

公开(公告)号：US20050200720A1

公开(公告)日：2005-09-15

申请号：US11076984

申请日：2005-03-11

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： G01T1/17 ,  A61B6/00 ,  G01T1/20 ,  G01T1/24 ,  H01L27/14 ,  H04N5/225 ,  H04N5/32 ,  H04N5/341 ,  H04N5/357 ,  H04N5/369 ,  H04N9/64

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。