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公开(公告)号：US07969244B2
公开(公告)日：2011-06-28
申请号：US12173345
申请日：2008-07-15
IPC分类号： H03F3/04
CPC分类号： H03F1/301
摘要： A technique is provided for acquiring data with reduced correlated low frequency noise interference via a data acquisition circuit. The data acquisition circuit includes a plurality of data channels comprising a plurality of amplifiers and a biasing circuit for providing bias voltages to the plurality of amplifiers. The biasing circuit is configured to generate the bias voltages and establish a relationship between the bias voltages so as to reduce correlated low frequency noise in the plurality of amplifiers.
摘要翻译： 提供了一种通过数据采集电路获取具有降低的相关低频噪声干扰的数据的技术。 数据采集电路包括多个数字通道，包括多个放大器和用于向多个放大器提供偏置电压的偏置电路。 偏置电路被配置为产生偏置电压并建立偏置电压之间的关系，以便减少多个放大器中的相关低频噪声。
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公开(公告)号：US20100013560A1
公开(公告)日：2010-01-21
申请号：US12173345
申请日：2008-07-15
IPC分类号： H03F3/04
CPC分类号： H03F1/301
摘要： A technique is provided for acquiring data with reduced correlated low frequency noise interference via a data acquisition circuit. The data acquisition circuit includes a plurality of data channels comprising a plurality of amplifiers and a biasing circuit for providing bias voltages to the plurality of amplifiers. The biasing circuit is configured to generate the bias voltages and establish a relationship between the bias voltages so as to reduce correlated low frequency noise in the plurality of amplifiers.
摘要翻译： 提供了一种通过数据采集电路获取具有降低的相关低频噪声干扰的数据的技术。 数据采集电路包括多个数字通道，包括多个放大器和用于向多个放大器提供偏置电压的偏置电路。 偏置电路被配置为产生偏置电压并建立偏置电压之间的关系，以便减少多个放大器中的相关低频噪声。
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公开(公告)号：US20120275569A1
公开(公告)日：2012-11-01
申请号：US13098275
申请日：2011-04-29
申请人： Ping Xue , Shijia Zhang , Fengchao Zhang , John Robert Lamberty , Richard Gordon Cronce , James Zhengshe Liu , Paul Richard Granfors , German Guillermo Vera
发明人： Ping Xue , Shijia Zhang , Fengchao Zhang , John Robert Lamberty , Richard Gordon Cronce , James Zhengshe Liu , Paul Richard Granfors , German Guillermo Vera
IPC分类号： H05G1/08
CPC分类号： A61B6/5205 , A61B6/4233 , A61B6/54
摘要： A method for controlling a X-ray radiography system includes acquiring data from a digital X-ray detector, characterizing electromagnetic interference based upon the acquired data, selecting an electromagnetic interference compensation algorithm based upon the characterized electromagnetic interference, acquiring X-ray imaging data via the digital X-ray detector based upon the selected electromagnetic interference compensation algorithm, and processing the X-ray imaging data to produce image data capable of reconstruction in a user viewable form.
摘要翻译： 一种用于控制X射线摄影系统的方法，包括从数字X射线检测器获取数据，基于获取的数据表征电磁干扰，基于特征化的电磁干扰选择电磁干扰补偿算法，通过 基于所选择的电磁干扰补偿算法的数字X射线检测器，以及处理X射线成像数据以产生能够以用户可视形式重建的图像数据。
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公开(公告)号：US20120074329A1
公开(公告)日：2012-03-29
申请号：US12891016
申请日：2010-09-27
申请人： Paul Richard Granfors , John Robert Lamberty , Richard Gordon Cronce , Ping Xue , Marc Schaepkens , Aaron Judy Couture , Douglas Albagli
发明人： Paul Richard Granfors , John Robert Lamberty , Richard Gordon Cronce , Ping Xue , Marc Schaepkens , Aaron Judy Couture , Douglas Albagli
IPC分类号： G01T1/24
CPC分类号： H01L27/14658 , H01L27/14623 , H04N5/32 , H04N5/35563
摘要： In one embodiment, a digital X-ray detector is provided with a plurality of pixel regions. Each pixel region includes a first photodiode having a first area and a second photodiode having a second area equal to or smaller than the first area. The digital X-ray detector also includes a shielding structure that overlies the first and second photodiodes of each pixel region with the shielding structure shielding proportionally less of the first photodiode than of the second photodiode to provide the first photodiode with a first sensitivity and the second photodiode with a second sensitivity lower than the first sensitivity.
摘要翻译： 在一个实施例中，数字X射线检测器设置有多个像素区域。 每个像素区域包括具有第一区域的第一光电二极管和具有等于或小于第一区域的第二区域的第二光电二极管。 数字X射线检测器还包括覆盖每个像素区域的第一和第二光电二极管的屏蔽结构，屏蔽结构屏蔽第一光电二极管比第二光电二极管成比例地少，以提供第一光敏二极管的第一灵敏度，而第二光电二极管 光电二极管的灵敏度低于第一灵敏度。
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公开(公告)号：US20100215146A1
公开(公告)日：2010-08-26
申请号：US12393762
申请日：2009-02-26
摘要： According to embodiments of the present technique, a system and a method for obtaining low-noise measurements for a wide range of analog signal strengths is provided. According to aspects of the present technique, a low-gain measurement of an input pixel charge is performed, wherein the input pixel charge is distributed to two feedback capacitors, which together provide a relatively low integrator gain. After the low-gain measurement, a high-gain measurement is performed, wherein one of the capacitors is remove from the feedback loop and the charge is redistributed to the remaining capacitor.
摘要翻译： 根据本技术的实施例，提供了一种用于获得宽范围的模拟信号强度的低噪声测量的系统和方法。 根据本技术的方面，执行输入像素电荷的低增益测量，其中输入像素电荷被分配到两个反馈电容器，这两个反馈电容器一起提供相对低的积分器增益。 在低增益测量之后，执行高增益测量，其中电容器中的一个从反馈回路中去除，并且电荷被再分配到剩余电容器。
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16.发明授权Method and means for reducing electromagnetic noise induced in X-ray detectors 有权降低X射线探测器感应电磁噪声的方法和装置公开(公告)号：US07091491B2
公开(公告)日：2006-08-15
申请号：US10846971
申请日：2004-05-14
IPC分类号： G01T1/24 , H01L27/00 , H01L27/146 , G21K7/00
CPC分类号： A61B6/547 , A61B6/00 , A61B6/12 , A61B6/4233 , H04N5/32 , H04N5/3577
摘要： The present invention relates to a system and method by which the magnitude of an interfering electrical and/or magnetic field may be sampled locally (in the X-ray detector for example) and reduced or eliminated. More specifically, embodiments comprise a system and method by which an interfering field may be sampled within the same orientation as the X-ray detector panel, and then subtracted out of each respective element sample.
摘要翻译： 本发明涉及一种系统和方法，通过该系统和方法可以局部地（例如在X射线检测器中）对干扰电场和/或磁场的大小进行采样并减少或消除。 更具体地，实施例包括系统和方法，通过该系统和方法可以在与X射线检测器面板相同的取向下对干扰场采样，然后从每个相应的元件样本中减去。
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